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Universitat de Barcelona
1.
Fu Balboa, Marcela.
Determinantes de las concentraciones de cotinina en saliva, dependencia a la nicotina y estadios del cambio en fumadores.
Degree: Departament de Ciències Clíniques, 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/51567
► Antecedentes La adicción a los cigarrillos se debe principalmente a la nicotina que contienen, pero poco se conoce sobre su dosificación en fumadores. La medición…
(more)
▼ Antecedentes
La adicción a los cigarrillos se debe principalmente a la nicotina que contienen, pero poco se conoce sobre su dosificación en fumadores. La medición
de la cotinina, el principal metabolito
de la nicotina, ayuda a caracterizar la dosis
de nicotina recibida por los fumadores, reflejando diferencias en la conducta tabáquica y en la motivación para dejar
de fumar, en el tipo
de cigarrillos fumados y en el metabolismo
de la nicotina en diferentes poblaciones.
Hipótesis
1. El número
de cigarrillos fumados será el principal determinante
de las concentraciones
de cotinina en saliva: las concentraciones
de cotinina en saliva se incrementarán al incrementar el consumo
de cigarrillos.
2. Las concentraciones
de cotinina en saliva serán mayores cuanto menor tiempo haya transcurrido desde que el fumador se despierta hasta que fuma el primer cigarrillo.
3. Los fumadores más dependientes tendrán concentraciones
de cotinina en saliva más altas que los fumadores menos dependientes.
4. Los fumadores muy dependientes y con altas concentraciones
de cotinina en saliva estarán menos preparados para dejar
de fumar.
Objetivos
1. Caracterizar la distribución
de las concentraciones
de cotinina en saliva en fumadores y los factores que la influencian.
2. Estudiar la asociación entre el tiempo transcurrido hasta el primer cigarrillo fumado después
de despertarse y la concentración
de cotinina en saliva.
3. Analizar la relación entre la dependencia a la nicotina y las concentraciones
de cotinina en saliva.
4. Estudiar la preparación para dejar
de fumar (estadios del cambio
de Prochaska y DiClemente)
de acuerdo al perfil
de dependencia y los niveles
de cotinina en saliva.
Metodología
Los datos provienen
de dos estudios independientes. Uno
de ellos es un estudio transversal (2004-2005)
de una muestra representativa
de la población general
de Barcelona (n=1245), en el que se utilizó un cuestionario sobre tabaquismo y exposición pasiva al humo del tabaco, así como una muestra
de saliva para determinar la concentración
de cotinina. El otro también es un estudio transversal (2006)
de una muestra representativa
de la población española ≥l8 años (n=2522), en el que se utilizó una entrevista telefónica sobre consumo
de tabaco y exposición al humo ambiental del tabaco. Se calcularon medias y desviaciones estándar o medianas y rangos intercuartílicos, según fuera apropiado, para describir los datos. Se utilizaron análisis descriptivos y modelos
de regresión múltiple en función
de los objetivos propuestos.
Resultados
Las concentraciones
de cotinina en saliva aumentaron a mayor consumo
de cigarrillos hasta llegar aproximadamente a los 20 cigarrillos, nivel donde las concentraciones
de cotinina se estabilizaban. El consumo diario
de cigarrillos, el momento del día en que se fuma más y el tiempo transcurrido desde que el fumador se despierta hasta que fuma su primer cigarrillo estuvieron significativamente relacionados con la concentración
de cotinina en saliva. Éste último en particular demostró ser un buen…
Advisors/Committee Members: false (authoremailshow), Fernández Muñoz, Esteve (director), false (authorsendemail).
Subjects/Keywords: Hàbit de fumar; Tabaco – Consumo; Tobbacco habit; Cigarretes; Cigarrillos; Nicotina; Nicotine; Ciències de la Salut; 614
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
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to Zotero / EndNote / Reference
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APA (6th Edition):
Fu Balboa, M. (2011). Determinantes de las concentraciones de cotinina en saliva, dependencia a la nicotina y estadios del cambio en fumadores. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/51567
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fu Balboa, Marcela. “Determinantes de las concentraciones de cotinina en saliva, dependencia a la nicotina y estadios del cambio en fumadores.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/51567.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fu Balboa, Marcela. “Determinantes de las concentraciones de cotinina en saliva, dependencia a la nicotina y estadios del cambio en fumadores.” 2011. Web. 27 Feb 2021.
Vancouver:
Fu Balboa M. Determinantes de las concentraciones de cotinina en saliva, dependencia a la nicotina y estadios del cambio en fumadores. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/51567.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fu Balboa M. Determinantes de las concentraciones de cotinina en saliva, dependencia a la nicotina y estadios del cambio en fumadores. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/51567
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
2.
Abelló Poveda, Mª Teresa.
Factores incidentes en la reproducción y desarrollo de los primates en cautividad: conservación “ex situ” de los gorilas occidentales (Gorilla gorilla gorilla).
Degree: Departament de Psiquiatria i Psicobiologia Clínica, 2010, Universitat de Barcelona
URL: http://hdl.handle.net/10803/52079
► Incidental factors in the reproduction and development of primates in captivity: Western gorillas " ex-situ " conservation (Gorilla gorilla gorilla) Authoress: Ma. Teresa Abelló Poveda…
(more)
▼ Incidental factors in the reproduction and development of primates in captivity: Western gorillas " ex-situ " conservation (Gorilla gorilla gorilla)
Authoress: Ma. Teresa Abelló Poveda
Director(Principal) of the Thesis: Dra. Montserrat Colell Mimó
TEXT:
This research is based on the problems detected in the reproduction and development of great apes and specifically on the ex situ gorilla population (EEP. EAZA), and the need to investigate factors that could improve their breeding success and their development.
The subjects of this study are members of a gentle population who has lived throughout several decades, and in some cases still it lives, in captivity and, therefore, under conditions that defer enough from their natural ones in the wild regarding habitat and social life.
One of the specific problems detected in the great apes population comes from the considerable number of individuals hand-raised (by human beings) that exists in the historical and current population, and that present some deficiencies in their maternal behaviour, in their social relations, and in their breeding results.
For that reason different aspects of the socialization process and social behaviour are analyzed on hand-reared animals, with special incidence on the factors that have some influence on maternal behavior and a successful breeding of individuals when reaching their sexual maturity.
The different studies presented are based on the result from surveys (quantitative data), qualitative observations of social behaviour and specific demographic data obtained from the Gorilla European Studbook.
The results give a better knowledge a on the acquisition of socila skills on great apes, and more specifically on gorillas, and it is worth to improve exsitu conservation (management/breeding) programmes
This research allowed allowed to identify those factors that favor a good maternal profile in captive gorilla females, and for extension in other species of great apes. Revealing some factors of concern for the social development of hand-reared gorillas and determining which are the necessary circumstances to realize the early introduction of the above mentioned individuals in a group of coespecíficos, so that their develop with a adequate social profile and can be introduced without difficulty in other groups of coespecíficos
Advisors/Committee Members: false (authoremailshow), Colell Mimó, Montserrat (director), false (authorsendemail).
Subjects/Keywords: Primats; Primates; Simis; Simios; Apes; Goril·la; Gorila; Gorilla; Ciències de la Salut; 59
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Abelló Poveda, M. T. (2010). Factores incidentes en la reproducción y desarrollo de los primates en cautividad: conservación “ex situ” de los gorilas occidentales (Gorilla gorilla gorilla). (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/52079
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Abelló Poveda, Mª Teresa. “Factores incidentes en la reproducción y desarrollo de los primates en cautividad: conservación “ex situ” de los gorilas occidentales (Gorilla gorilla gorilla).” 2010. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/52079.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Abelló Poveda, Mª Teresa. “Factores incidentes en la reproducción y desarrollo de los primates en cautividad: conservación “ex situ” de los gorilas occidentales (Gorilla gorilla gorilla).” 2010. Web. 27 Feb 2021.
Vancouver:
Abelló Poveda MT. Factores incidentes en la reproducción y desarrollo de los primates en cautividad: conservación “ex situ” de los gorilas occidentales (Gorilla gorilla gorilla). [Internet] [Thesis]. Universitat de Barcelona; 2010. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/52079.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Abelló Poveda MT. Factores incidentes en la reproducción y desarrollo de los primates en cautividad: conservación “ex situ” de los gorilas occidentales (Gorilla gorilla gorilla). [Thesis]. Universitat de Barcelona; 2010. Available from: http://hdl.handle.net/10803/52079
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
3.
Trapote Torres, Alejandro.
Síntesis, estudio biofísico y evaluación de derivados benzimidazólicos que interaccionan con RNA con potencial antiviral.
Degree: Departament de Química Orgànica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/336976
► IRES or Internal Ribosomal Entry Sites are highly structured sequences harbored on the 5' untranslated region (5'-UTR) of several virus and eukaryotic mRNAs that enable…
(more)
▼ IRES or Internal Ribosomal Entry Sites are highly structured sequences harbored on the 5' untranslated region (5'-UTR) of several virus and eukaryotic mRNAs that enable an alternative cap-independent translation. Highly conserved in virus genotypes, IRESs are attractive targets to design novel antiviral drugs.
A few years ago, massive MS-screening for the selection of Hepatitis C virus IRES (HCV IRES) ligands identified a 2-aminobenzimidazole-containing compound. Further SAR studies conducted on 2-aminobenzimidazoles originated Isis-11, which inhibited HCV replication with a submicromolar EC50. Isis-11 exhibited a micromolar affinity against subdomain Ila of hepatitis C virus IRES (HCV IRES), an essential motif for the proper binding of the IRES to the ribosome. Structural studies showed that subdomain Ila contains a highly conserved 5-nucleotide bulge to which Isis-11 and related compounds can bind to promote a conformational switch that ultimately leads to IRES function inhibition.
Foot-and-mouth disease virus (FMDV) is a picornavirus whose translation is also driven by the IRES element present at the 5'-UTR of RNA. Although HCV and FMDV IRES differ significantly in nucleotide sequences and structure, the similarities between both IRESs led us to hypothesize that 2-aminobenzimidazole derivatives could also act as FMDV IRES binders, and lead to the inhibition of FMDV IRES-mediated translation.
We describe the preparation of new Isis-11 analogues, collectively referred to as IRAB (IRES aminobenzimidazole binders), that have been shown to inhibit FMDV IRES-dependent protein synthesis and viral replication at micromolar concentracions. A series of biophysical assays, such as circular dichroism, fluorescence and microcalorimetry, have been performed to determine the binding affinity of these ligands for segments of FMDV IRES. For comparison purposes, the same compounds have been also evaluated as HCV IRES ligands. In both cases, affinities in the micromolar and submicromolar range have been determined. SHAPE (Selective 2'-Hydroxyl Acylation analyzed by Primer Extension) analysis and hydroxyl radical footprinting have been also carried out to characterize the binding of IRAB analogues to FMDV IRES.
Advisors/Committee Members: false (authoremailshow), Robles i Brau, Jordi (director), false (authorsendemail).
Subjects/Keywords: Àcids nucleics; Ácidos nucleicos; Nucleic acids; Compostos heterocíclics; Compuestos heterocíclicos; Heterocyclic compounds; Disseny de medicaments; Diseño de medicamentos; Drug design; Ciències Experimentals i Matemàtiques; 547
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Trapote Torres, A. (2015). Síntesis, estudio biofísico y evaluación de derivados benzimidazólicos que interaccionan con RNA con potencial antiviral. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/336976
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Trapote Torres, Alejandro. “Síntesis, estudio biofísico y evaluación de derivados benzimidazólicos que interaccionan con RNA con potencial antiviral.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/336976.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Trapote Torres, Alejandro. “Síntesis, estudio biofísico y evaluación de derivados benzimidazólicos que interaccionan con RNA con potencial antiviral.” 2015. Web. 27 Feb 2021.
Vancouver:
Trapote Torres A. Síntesis, estudio biofísico y evaluación de derivados benzimidazólicos que interaccionan con RNA con potencial antiviral. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/336976.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Trapote Torres A. Síntesis, estudio biofísico y evaluación de derivados benzimidazólicos que interaccionan con RNA con potencial antiviral. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/336976
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
4.
Vanegas Cañón, Sara Alieth.
Cómo tejer imaginarios a través del currículo de lengua castellana.
Degree: Departament de Didàctica de la Llengua i la Literatura, 2016, Universitat de Barcelona
URL: http://hdl.handle.net/10803/392668
► This research was developed because of the need to respond to a problem present in the classroom when teaching literature to children between 9 and…
(more)
▼ This research was developed because of the need to respond to a problem
present in the classroom when teaching literature to children between 9 and 15
years. It was developed in the school environment near to Bogota, Colombia,
where the researcher teacher has been working over 10 years through follow-ups
and observations to socio-economically vulnerable groups mostly coursing
between fifth and ninth grade in high school.
From the initial doctoral studies in
Barcelona focused on the line of literature and
audiovisual an exploratory process started to analyze how the existing classroom
practices were carried out in both an elementary school in
Barcelona and the
Colombian school contexts, all this using the participating and non-participating
interview and observation qualitative tools as well as the sporadic observation of
other teaching contexts by the researcher teacher, thus supporting the formulation
of a didactic and exploratory work.
The objective of this research was to unravel the functioning of the literary fictional
language of high school children to propose an educational model which lets the
teachers to better understand the children`s expectations, experiences and
performance, thus encouraging the development of their communication skills.
From this perspective and work horizon, there is a need to recognize a very
complex learning individual with some subjective perspectives that affect his/ her
learning process. For that reason, the psychology, psychiatry, philosophy,
pedagogy, literary stylistics and audiovisual theoretical sources were used to
support the research.
Later on an experiential job was developed where the theoretical contributions
were joined to specific activities in a very diverse and troublesome context: a
continuous classroom - laboratory practice for three to four years with the same
groups to observe the subjective factors and psychological processes underlying
from proposed activities of texts` reception and production. From that experiential
work a fictional literary fictional structure was modeled in children with specific
mechanisms and through the application of a flexible and systemic teaching model.
The rationale of the results allowed finding variables and content that affected this
evolutionary and cumulative process on the observations of the behavior of the
user child.
The structure of the document reflects these great moments. In the first stage the
circumstances, reasons and the approach that guided this work are showed; later,
the second stage presents the theoretical framework and references the research
and pedagogical proposal were worked with. In the third stage, the diagnostic
exploration, the development of experiential work and expected results found are
showed.
In the scope of the experiential work which covers most of the document, it is
important to note that the development of some of the implemented learning
experiences are explained, in order of complexity, gender, literary…
Advisors/Committee Members: false (authoremailshow), Bordons, Glòria (director), false (authorsendemail).
Subjects/Keywords: Didàctica de la llengua; Didáctica de la lengua; Language teaching methods; Poesia; Poesía; Poetry; Novel·la; Novela; Fiction; Ciències de l'Educació; 81
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Vanegas Cañón, S. A. (2016). Cómo tejer imaginarios a través del currículo de lengua castellana. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/392668
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Vanegas Cañón, Sara Alieth. “Cómo tejer imaginarios a través del currículo de lengua castellana.” 2016. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/392668.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Vanegas Cañón, Sara Alieth. “Cómo tejer imaginarios a través del currículo de lengua castellana.” 2016. Web. 27 Feb 2021.
Vancouver:
Vanegas Cañón SA. Cómo tejer imaginarios a través del currículo de lengua castellana. [Internet] [Thesis]. Universitat de Barcelona; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/392668.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Vanegas Cañón SA. Cómo tejer imaginarios a través del currículo de lengua castellana. [Thesis]. Universitat de Barcelona; 2016. Available from: http://hdl.handle.net/10803/392668
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
5.
Miret i Cuadras, Pere, 1928-.
La Tuberculosi a Catalunya, des del segon terç del segle XIX, a la meitat del segle XX.
Degree: Departament de Salut Pública, 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/51612
► This research focuses on the evolution of the ideas that doctors had in Catalonia, during the XIX Century and the first half of the XX.…
(more)
▼ This research focuses on the evolution of the ideas that doctors had in Catalonia, during the XIX Century and the first half of the XX. To write this study, many texts, publications, memories and Medical academy access speeches have been analysed, as well as Records of the First International Tuberculosis Congress in
Barcelona, monographies, medical magazines and single texts referring to tuberculosis, dated between 1832 and 1950
From the mid XIX century to the first half of XX century, tuberculosis was the infectious disease with the highest mortality rate in Catalonia. The concentration of the people in the city, coming from rural areas in the beginning of the industrialisation, the bad social conditions that they found, the overcrowding in the deficient houses, the unsanitary factories, the long working hours; all these facts contributed to the expansion of the disease, and the annual mortality rate reached to 50 deaths per 10.000 people
The purpose of the study is to know the ideas that doctors had about the clinical manifestation of the disease, Koch’s bacillus, the different ways of transmission, the chances of infection and the effectiveness of the many treatments applied. During the studied period in this thesis, none treatment had been capable to cure the disease.
Since the 20’s, with the pneumothorax, some people were cured with morbid cavity, but its indications were limited. Sanatorium care was an indirect and nonspecific measure that improved the result when including the collapsoterapy, but the effectiveness of the sanatorium was low and the cost supposed the ruin for the families.
The serums, vaccines, tuberculin, gold salts, thiosulfate, did not have other utility than helping to keep hope. People with tuberculosis were hospitalised in common rooms with traumatized and operated people, and all them together with those with typhus, measles and cirrhosis.
In 1910, the first room for people with tuberculosis was built in Hospital Clinic, and in that year it was also built the first sanatorium in Catalonia, followed by more, but the total number of beds was way lower that the number of patients. Then, the tuberculosis maintained a high mortality rate until the development of the chemotherapy that allowed the cure of practically the totality of the cases, when applied correctly.
Advisors/Committee Members: false (authoremailshow), Corbella i Corbella, Jacint, 1937- (director), false (authorsendemail).
Subjects/Keywords: Tuberculosi; Tuberculosis; Ciències de la Salut; 614
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Miret i Cuadras, Pere, 1. (2011). La Tuberculosi a Catalunya, des del segon terç del segle XIX, a la meitat del segle XX. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/51612
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Miret i Cuadras, Pere, 1928-. “La Tuberculosi a Catalunya, des del segon terç del segle XIX, a la meitat del segle XX.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/51612.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Miret i Cuadras, Pere, 1928-. “La Tuberculosi a Catalunya, des del segon terç del segle XIX, a la meitat del segle XX.” 2011. Web. 27 Feb 2021.
Vancouver:
Miret i Cuadras, Pere 1. La Tuberculosi a Catalunya, des del segon terç del segle XIX, a la meitat del segle XX. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/51612.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Miret i Cuadras, Pere 1. La Tuberculosi a Catalunya, des del segon terç del segle XIX, a la meitat del segle XX. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/51612
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
6.
Andrés Sanz, Axel.
Modelització de la retenció cromatogràfica.
Degree: Departament de Química Analítica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/345236
► The main purpose of this PhD thesis is the thorough study of the chromatographic retention in RP-HPLC. In order to achieve this goal, the contributions…
(more)
▼ The main purpose of this PhD thesis is the thorough study of the chromatographic retention in RP-HPLC. In order to achieve this goal, the contributions to chromatographic retention from both the stationary and the mobile phase have been studied, as well as some of the most relevant physicochemical parameters involved in the elution process.
To study the stationary phase, a detailed characterization of chromatographic columns, based on the van Deemter equation, has been performed. In it, the different terms in this equation (eddy dispersion, diffusion and mass transfer) have been assessed individually and their contribution to HPLC band broadening has been evaluated. In this sense this thesis provides an Excel spreadsheet that works as a tool able to characterize stationary phases in a systematic and efficient way. In order to address the chromatographic retention itself several prediction models have been proposed, models that are able to successfully predict the retention in gradient mode of ionizable analytes, both acids and bases. The models have been tested using a selected set of compounds, which includes some drugs with complex structures, under a large variety of experimental conditions such as different mobile phase pH values, different gradient patterns and two different organic modifiers. As an important part to the development of these predicting models, the dependence of several physicochemical parameters (such as the mobile phase pH or the analyte pKa) with the composition of the mobile phase (fraction of organic modifier) has been thoroughly studied.
Additionally, this thesis also proposes an optimization to the well-known shake flask method, the reference method for the determination of drug lipophilicity (both log P and log D parameters). The two key improvements of the suggested optimization are using a low amount of drug and increasing the lipophilicity range where the shake-flask method could be applied, aspects that make the method more suitable for the new needs of the pharmaceutical industry, since companies synthesize their drug candidates, which may have a large variety of lipophilicity values, in low quantities.
Advisors/Committee Members: false (authoremailshow), Bosch, Elisabeth (director), Rosés Pascual, Martí (director), false (authorsendemail).
Subjects/Keywords: Cromatografia de líquids d'alta resolució; Cromatografía líquida de alta resolución; High performance liquid chromatography; Tecnologia farmacèutica; Tecnología farmacéutica; Pharmaceutical technology; Ciències Experimentals i Matemàtiques; 543
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Andrés Sanz, A. (2015). Modelització de la retenció cromatogràfica. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/345236
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Andrés Sanz, Axel. “Modelització de la retenció cromatogràfica.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/345236.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Andrés Sanz, Axel. “Modelització de la retenció cromatogràfica.” 2015. Web. 27 Feb 2021.
Vancouver:
Andrés Sanz A. Modelització de la retenció cromatogràfica. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/345236.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Andrés Sanz A. Modelització de la retenció cromatogràfica. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/345236
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
7.
Sebastián González, Miguel Ángel.
Self-Involving Representationalism (SIR): A naturalistic Theory of Phenomenal Consciousness.
Degree: Departament de Lògica, Història i Filosofia de la Ciència, 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/32012
► A naturalistic account of phenomenal consciousness is presented: Self-Involving Representationalism. The first step for the project of naturalizing phenomenal consciousness is to make the project…
(more)
▼ A naturalistic account of phenomenal consciousness is presented: Self-Involving Representationalism.
The first step for the project of naturalizing phenomenal consciousness is to make the project itself feasible. The purpose of the fi rst part of this work is to provide a suitable answer to some arguments presented against this enterprise. I discuss the classical modal and knowledge argument and defend the phenomenal concept strategy against objection by Tye and Chalmers. I also consider some arguments from vagueness against the project.
In the second part I will develop the pillars of the theory. In order to make compatible the intuition that phenomenal properties are intrinsic properties of the subject and explain cases of shifted spectrum I appeal following Shoemaker to appearance properties and I follow Egan in the characterization of this properties.
According to Self-Involving Representationalism, phenomenally conscious mental states are states that represent a speci c kind of
de se content. I argue that in having an experience I do not merely attribute certain properties to the object causing the experience, I attribute to myself being presented with an object with these properties. This content can be naturalized in rst-order terms by appealing to a certain sense of self: the sense of a bounded, living organism adapting to the environment to maintain life and the processes underlying the monitoring of the activity within these bounds.
Advisors/Committee Members: false (authoremailshow), Pina, David (director), Macià Fàbrega, Josep (tutor), false (authorsendemail).
Subjects/Keywords: Consciència; Conciencia; Consciousness; Ciències Humanes i Socials; 16
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sebastián González, M. . (2011). Self-Involving Representationalism (SIR): A naturalistic Theory of Phenomenal Consciousness. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/32012
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sebastián González, Miguel Ángel. “Self-Involving Representationalism (SIR): A naturalistic Theory of Phenomenal Consciousness.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/32012.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sebastián González, Miguel Ángel. “Self-Involving Representationalism (SIR): A naturalistic Theory of Phenomenal Consciousness.” 2011. Web. 27 Feb 2021.
Vancouver:
Sebastián González M. Self-Involving Representationalism (SIR): A naturalistic Theory of Phenomenal Consciousness. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/32012.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sebastián González M. Self-Involving Representationalism (SIR): A naturalistic Theory of Phenomenal Consciousness. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/32012
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
8.
Alamri, Saleh.
The contribution of the hippocampus to language processing.
Degree: Departament de Lingüística General, 2017, Universitat de Barcelona
URL: http://hdl.handle.net/10803/458367
► Los seres humanos ponen en juego distintas e ilimitadas capacidades para producir expresiones verbales y usarlas de forma flexible durante el procesamiento del lenguaje. Esta…
(more)
▼ Los seres humanos ponen en juego distintas e ilimitadas capacidades para producir expresiones verbales y usarlas
de forma flexible durante el procesamiento del lenguaje. Esta característica del lenguaje humano permite al hablante usar estructuras nuevas, flexibles y complejas durante la comunicación. Desde un punto
de vista neurobiológico, no se conoce completamente cómo se generan los rápidos procesos
de la producción y
de la comprensión del lenguaje, incluyendo la generación
de palabras, las interpretaciones y las representaciones comunes que facilitan el procesamiento del lenguaje en tiempo real. Las teorías clásicas se han limitado a la red lingüística en las regiones
de la corteza perisilviana, es decir, en las áreas
de Broca y
de Wernicke. La propuesta
de esta tesis sugiere que la red lingüística debe ir más allá
de las regiones corticales señaladas por las visiones tradicionales. Para hacer esto, la tesis propone la hipótesis
de que las estructuras subcorticales no son solo fundamentales para la memoria sino también para el lenguaje,
de manera que el procesamiento verbal online recibe una significativa controbución
de la memoria declarativa hipocampal que permite a los hablantes y a los oyentes utitlizar flexiblemente el lenguaje. El mecanismo
de esta contribución del sistema mnésico declarativo hipocampal durante el procesamiento del lenguaje on-line es a través
de la vinculación relacional en la cual la memoria declarativa hipocampal recupera rápidamente una red
de información relativa almacenada para ser utilizada en un cierto contexto.
Para apoyar la hipótesis
de las implicaciones hipocampales en el procesamiento verbal, se han revisado diversas patologías que afectan el hipocampo, incluyendo la enfermedad
de Alzheimer, el síndrome
de Down, el síndrome
de Williams, la esquizofrenia, la depresión y el trastorno bipolar. La revisión ha tenido como objetivo evaluar las alteraciones neurobiológicas hipocampales en cada patología, así como los perfiles cognitivo y lingüístico. Algunos descrubrimientos
de patologías previas indican que el hipocampo afecta al lenguaje en dos niveles. Primero, en el retraso general en la adquisición del lenguaje y en otras aspectos cognitivos, y, segundo, en la observación, cuando la formación hipocampal está dañada, del uso alterado del lenguaje durante la comunicación on-line y
de la interacción con lapsos cortos. Se observa que las lesiones hipocampales suprimen el uso flexible
de información almacenada dentro
de un cierto contexto comunicativo, como se ha validado en la navegación flexible en modelos animales. La tesis concluye que el hipocampo es un operador multi-cognitivo que implica a diversas áreas cognitivas que están implicadas en el uso flexible del lenguaje durante el procesamiento en tiempo real, lo que debería tenerse en cuenta en la red del lenguaje en el cerebro humano.
Advisors/Committee Members: false (authoremailshow), Boeckx, Cedric (director), Boeckx, Cedric (tutor), false (authorsendemail).
Subjects/Keywords: Neurobiologia; Neurobiología; Neurobiology; Ciència cognitiva; Ciencia cognitiva; Cognitive science; Neurolingüística; Neurolinguistics; Hipocamp (Cervell); Hipocampo (Cerebro); Hippocampus (Brain); Ciències Humanes i Socials; 81
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Alamri, S. (2017). The contribution of the hippocampus to language processing. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/458367
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Alamri, Saleh. “The contribution of the hippocampus to language processing.” 2017. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/458367.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Alamri, Saleh. “The contribution of the hippocampus to language processing.” 2017. Web. 27 Feb 2021.
Vancouver:
Alamri S. The contribution of the hippocampus to language processing. [Internet] [Thesis]. Universitat de Barcelona; 2017. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/458367.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Alamri S. The contribution of the hippocampus to language processing. [Thesis]. Universitat de Barcelona; 2017. Available from: http://hdl.handle.net/10803/458367
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Sánchez Martí, Angelina.
Trajectòries d'èxit educatiu dels joves de famílies immigrades a secundària postobligatòria: centres educatius i agents institucionals.
Degree: Departament de Mètodes d'Investigació i Diagnòstic en Educació, 2016, Universitat de Barcelona
URL: http://hdl.handle.net/10803/400099
► The purpose of this dissertation is to understand successful educational careers among young people from immigrant families at post-compulsory secondary education (hereinafter PO) under an…
(more)
▼ The purpose of this dissertation is to understand successful educational careers among young people from immigrant families at post-compulsory secondary education (hereinafter PO) under an analytical framework focusing on schools and the relational universe of students –specifically with institutional agents. The definition of institutional agents from Stanton-Salazar (1997, 2011) is adopted, so that from the finding of a considerable part of young people from immigrant families coming and attending the PO, the research explores how schools and institutional agents –peers, counsellors, teachers, etc.– encourage their stay on at school and contribute to offset the reproduction of social inequalities –caused by differences of origin, gender, social class… and, in general, by the ability of these students to fit into the school model. In particular, this work is concerned with how schools and their actors convey various forms of support that students from immigrant families use to build successful educational careers.
This dissertation makes a contribution at a qualitative level on the schooling and understanding of the social and relational nature of successful educational processes in PO. It is a mixed methods sequential explanatory research of two phases (quan → QUAL) from which several cases of young people from immigrant families have been investigated. They are all students from three urban public secondary centres from the province of
Barcelona who reached the last year of PO and had opportunities to continue studying. The analysis was carried out taking into account different perspectives: an institutional one –the intention which led to the study of the schools participating in the study–; an individual one –which led to the monitoring of the educational paths of these youth from the last year of compulsory secondary education (4th year of ESO) to the final year of PO–; and, a relational one –the aim of which was to discover how institutional agents and, particularly, teachers had influenced the construction of their “successful educational careers”.
The dissertation is divided into three main sections. The first one is comprised by two chapters focused on the theoretical approaches and factors most used to analyse the educational careers of young people from immigrant families; and, the theories of social capital, social support, as well as the literature about school-based relationships. The second section describes the design and methodology used to address the purpose that guides this work. The last section focuses on the results and conclusions of the research. Chapter 4 discusses scenarios where young people attend school and allows the reader to understand how they influence or encourage capital formation and the shaping of successful educational careers. Chapter 5 focuses on the study of the development of their educational careers in PO. Chapter 6 is aimed at analysing the social and educational relationships of youth with institutional agents and, specifically, to understand how to promote…
Advisors/Committee Members: false (authoremailshow), Marín Gracia, Ma. Ángeles, 1955- (director), Rodríguez Espinar, Sebastián, 1946- (director), false (authorsendemail).
Subjects/Keywords: Educació secundària postobligatòria; Educación secundaria postobligatoria; Secondary education; Immigrants adolescents; Inmigrantes adolescentes; Teenage immigrants; Ciències de l'Educació; 373
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sánchez Martí, A. (2016). Trajectòries d'èxit educatiu dels joves de famílies immigrades a secundària postobligatòria: centres educatius i agents institucionals. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/400099
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Sánchez Martí, Angelina. “Trajectòries d'èxit educatiu dels joves de famílies immigrades a secundària postobligatòria: centres educatius i agents institucionals.” 2016. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/400099.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sánchez Martí, Angelina. “Trajectòries d'èxit educatiu dels joves de famílies immigrades a secundària postobligatòria: centres educatius i agents institucionals.” 2016. Web. 27 Feb 2021.
Vancouver:
Sánchez Martí A. Trajectòries d'èxit educatiu dels joves de famílies immigrades a secundària postobligatòria: centres educatius i agents institucionals. [Internet] [Thesis]. Universitat de Barcelona; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/400099.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sánchez Martí A. Trajectòries d'èxit educatiu dels joves de famílies immigrades a secundària postobligatòria: centres educatius i agents institucionals. [Thesis]. Universitat de Barcelona; 2016. Available from: http://hdl.handle.net/10803/400099
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
10.
Pérez Guillén, Cristina.
Advanced seismic methods applied to the study of snow avalanche dynamics and avalanche formation.
Degree: Departament de Dinàmica de la Terra i de l'Oceà, 2016, Universitat de Barcelona
URL: http://hdl.handle.net/10803/400710
► Las avalanchas de nieve son extensas fuentes móviles de energía sísmica e infrasónica. El campo de ondas acústicas y sísmicas generado por ellas es un…
(more)
▼ Las avalanchas
de nieve son extensas fuentes móviles
de energía sísmica e infrasónica. El campo
de ondas acústicas y sísmicas generado por ellas es un fenómeno natural complejo producido por la interacción del flujo con su medio ambiente. Actualmente, las avalanchas son monitorizadas mediante sensores sísmicos y
de infrasonido proporcionando datos para caracterizar las avalanchas y los procesos dinámicos que las gobiernan. Además, estos sistemas
de monitoreo también proporcionan información sobre los mecanismos
de desencadenamiento
de avalanchas tales como, por ejemplo, las vibraciones producidas por terremotos.
El objetivo
de este tesis es ampliar las aplicaciones actuales
de los métodos sísmicos principalmente para investigar avalanchas
de nieve, y que a su vez, los resultados sean relevantes para mejorar los sistemas
de monitoreo actuales. Se analiza un catálogo
de treinta y tres avalanchas
de nieve registradas mediante sensores sísmicos en el sitio
de test
de Vallée
de la Sionne (Suiza). Un análisis comparativo
de los datos sísmicos y datos adquiridos con otra instrumentación (datos
de infrasonido, radares
de frecuencia modulada y estaciones meteorológicas) se presenta en cada caso para complementar y validar los resultados
de la tesis.
Los resultados obtenidos presentan aportaciones novedosas dentro del campo
de investigación
de la dinámica
de avalanchas
de nieve y
de su formación, específicamente en el campo
de avalanchas inducidas por terremotos. En este campo, se analiza un conjunto
de datos únicos
de una avalancha que coincide temporalmente con un terremoto, evaluando la posibilidad
de ser o no desencadenado por las vibraciones generadas por el terremoto. En el campo
de investigación
de la dinámica
de avalanchas, se ha realizado una parametrización
de las señales sísmicas
de un catálogo
de avalanchas
de diferente naturaleza. La cuantificación
de las señales sísmicas en el conjunto
de índices definidos permite inferir directamente características dinámicas
de las avalanchas
de nieve.
Advisors/Committee Members: false (authoremailshow), Suriñach Cornet, Emma (director), Suriñach Cornet, Emma (tutor), false (authorsendemail).
Subjects/Keywords: Sismologia; Sismología; Seismology; Terratrèmols; Terremotos; Earthquakes; Allaus; Aludes; Avalanches; Neu; Nieve; Snow; Ciències Experimentals i Matemàtiques; 55
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pérez Guillén, C. (2016). Advanced seismic methods applied to the study of snow avalanche dynamics and avalanche formation. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/400710
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pérez Guillén, Cristina. “Advanced seismic methods applied to the study of snow avalanche dynamics and avalanche formation.” 2016. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/400710.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pérez Guillén, Cristina. “Advanced seismic methods applied to the study of snow avalanche dynamics and avalanche formation.” 2016. Web. 27 Feb 2021.
Vancouver:
Pérez Guillén C. Advanced seismic methods applied to the study of snow avalanche dynamics and avalanche formation. [Internet] [Thesis]. Universitat de Barcelona; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/400710.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pérez Guillén C. Advanced seismic methods applied to the study of snow avalanche dynamics and avalanche formation. [Thesis]. Universitat de Barcelona; 2016. Available from: http://hdl.handle.net/10803/400710
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
11.
Candotti, Michela.
Environment matters : the impact of urea and macromolecular crowding on proteins.
Degree: 2016, Universitat de Barcelona
URL: http://hdl.handle.net/10803/403839
► This work aims to analytically understand the impact of two diametric opposite environments on protein structure and dynamics and compared them to the most common…
(more)
▼ This work aims to analytically understand the impact of two diametric opposite environments on protein structure and dynamics and compared them to the most common solvent on earth: water. The first environment is a popular denaturing solution (urea 8M), which has served for years in protein-science laboratories to investigate protein stability; still many open questions regarding its mechanism of action remained unclear. The second environment instead moves towards a more physiological representation of proteins. The cell interior, in fact, is a crowded solution highly populated prevalently by proteins, but studies on protein structure and dynamics have lead so far to confusing or even opposite observations.
The lack of a consensus view in both phenomena possibly derives from the bias of the system under study. This work is an attempt of a comparative study using the most general systems: a diverse spectrum of proteins folds, different stages along the reaction path (early stages or end-point) and/or different protein force-fields. Our main objective was to derive common pattern and general rules valid at proteome level, focusing on three major aspects of proteins: the structure, the dynamic and the interactions with the solvent molecules. Molecular dynamics simulation appeared then as the most suitable tool because of its ability to i) analyze proteins at broad range of resolutions; ii) access the direct time-resolved dynamic of the system and iii) dissect the specific interactions that arise in the new settings.
Specifically, the case of urea-induced unfolding needs a system for which is possible to clearly identify folded and unfolded state – globular proteins are then the most suitable ones. We extracted general rules on the folded/unfolded transition by studying independently the two end-points of folded/unfolded reaction. We simulated the urea-induced unfolded state of a model protein, ubiquitin to understand the energetics stabilizing unfolded structures in urea. We found that the unfolded ubiquitin in 8M urea is fully extend and flexible and capturing efficiently urea molecules to the first solvation shell. Dispersion, rather than electrostatic, appear the main energetic contribution to explain the stabilization of the unfolded state.
We then simulated the early stages of urea-induced unfolding on a large dataset of folded proteins, which represent the major folds of globular proteins, aiming also to investigate the kinetic role of urea in triggering the protein unfolding. We found that partially unfolded proteins expose the apolar residues buried in the protein interior, mainly via cavitation. Similar to the unfolded state, it is the dispersion interactions that drive urea accumulation in the solvation shell but here urea molecules take advantage of microscopic unfolding events to penetrate the protein interior.
Macromolecular crowding instead is a phenomenon that universally affects all the proteins. We simulated a system that included as crowding agents proteins with different…
Advisors/Committee Members: Universitat de Barcelona. Facultat de Biologia, false (authoremailshow), Orozco López, Modesto (director), false (authorsendemail).
Subjects/Keywords: Urea; Proteïnes; Proteínas; Proteins; Macromolècules; Macromoléculas; Macromolecules; Ciències Experimentals i Matemàtiques; 577
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Candotti, M. (2016). Environment matters : the impact of urea and macromolecular crowding on proteins. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/403839
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Candotti, Michela. “Environment matters : the impact of urea and macromolecular crowding on proteins.” 2016. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/403839.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Candotti, Michela. “Environment matters : the impact of urea and macromolecular crowding on proteins.” 2016. Web. 27 Feb 2021.
Vancouver:
Candotti M. Environment matters : the impact of urea and macromolecular crowding on proteins. [Internet] [Thesis]. Universitat de Barcelona; 2016. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/403839.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Candotti M. Environment matters : the impact of urea and macromolecular crowding on proteins. [Thesis]. Universitat de Barcelona; 2016. Available from: http://hdl.handle.net/10803/403839
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
12.
Núñez Pons, Laura.
Ecología química en el bentos marino de la Antártida: productos naturales y defensa química en esponjas hexactinélidas, corales blandos y ascidias coloniales.
Degree: Departament de Biologia Animal, 2012, Universitat de Barcelona
URL: http://hdl.handle.net/10803/104105
► Los habitantes del bentos antártico combaten la depredación, la competencia y el recubrimiento desarrollando mecanismos como la defensa química. Ésta estrategia está particularmente extendida entre…
(more)
▼ Los habitantes del bentos antártico combaten la depredación, la competencia y el recubrimiento desarrollando mecanismos como la defensa química. Ésta estrategia está particularmente extendida entre organismos sésiles y organismos
de cuerpo blando. Las defensas repelentes contra depredadores han
de considerarse junto con la calidad nutricional, pues las dietas muy energéticas enmascaran la repelencia. La producción
de metabolitos secundarios defensivos es costosa. Por ello, la Teoría
de Defensa Optimizada (ODT) prevé que han
de localizarse en las regiones corporales más valiosas o expuestas. En las comunidades antárticas los principales depredadores son las estrellas
de mar y se postula la concentración
de defensas en áreas superficiales en las presas. Pero también influyen las poblaciones
de anfípodos asociados a los biosustratos, obteniendo en ellos refugio y fuente
de alimentación. Esta tesis se centra en las defensas químicas
de tres grupos relevantes del bentos antártico relativamente poco estudiados: esponjas hexactinélidas, corales blandos y ascidias coloniales. Se seleccionaron dos depredadores simpátricos, la estrella Odontaster validus y, por primera vez, fue utilizado el anfípodo Cheirimedon femoratus. Diseñamos un nuevo protocolo con numerosas ventajas metodológicas además
de un gran potencial discriminatorio, y observamos que en 31 especies hubo mayor repelencia hacia el anfípodo que hacia la estrella, sobretodo en algas y esponjas, que podrían representar potenciales huéspedes-presa. A partir
de aquí estudiamos muestras
de los tres grupos seleccionados. En hexactinélidas, las defensas químicas son más débiles y derivadas del metabolismo primario, pero compensadas con un bajo valor nutricional. Algunos glucoesfingolípidos, podrían tener valor quimiotaxonómico como marcadores
de la familia Rossellidae. En corales blandos existen metabolitos
de defensa primarios y secundarios operando sinérgicamente, y probablemente forman parte del mucus superficial. En ascidias coloniales, los metabolitos defensivos son secundarios y muy potentes; además, en algunas especies éstos tienden a acumularse en tejidos internos, presumiblemente para producir larvas protegidas químicamente. Las ascidias mostraron poca actividad antibacteriana, pero algunos corales exhibieron respuestas inhibitorias. Esta Tesis proporciona la estructura, distribución y posible origen
de los metabolitos responsables
de las actividades defensivas en tres grupos relevantes
de invertebrados antárticos.
Advisors/Committee Members: false (authoremailshow), Ávila Escartín, Conxita (director), Maldonado Barahona, Manuel (director), false (authorsendemail).
Subjects/Keywords: Ecologia marina; Ecología marina; Marine ecology; Defensa química; Chemical defense; Productes naturals; Productos naturales; Natural products; Antàrtida; Regiones antárticas; Antarctica; Invertebrats bentònics; Invertebrados bentónicos; Benthic invertebrates; Ciències Experimentals i Matemàtiques; 59
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APA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Núñez Pons, L. (2012). Ecología química en el bentos marino de la Antártida: productos naturales y defensa química en esponjas hexactinélidas, corales blandos y ascidias coloniales. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/104105
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Núñez Pons, Laura. “Ecología química en el bentos marino de la Antártida: productos naturales y defensa química en esponjas hexactinélidas, corales blandos y ascidias coloniales.” 2012. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/104105.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Núñez Pons, Laura. “Ecología química en el bentos marino de la Antártida: productos naturales y defensa química en esponjas hexactinélidas, corales blandos y ascidias coloniales.” 2012. Web. 27 Feb 2021.
Vancouver:
Núñez Pons L. Ecología química en el bentos marino de la Antártida: productos naturales y defensa química en esponjas hexactinélidas, corales blandos y ascidias coloniales. [Internet] [Thesis]. Universitat de Barcelona; 2012. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/104105.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Núñez Pons L. Ecología química en el bentos marino de la Antártida: productos naturales y defensa química en esponjas hexactinélidas, corales blandos y ascidias coloniales. [Thesis]. Universitat de Barcelona; 2012. Available from: http://hdl.handle.net/10803/104105
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
13.
Bonnín Roig, Caterina del Mar.
Funcionament psicosocial en el trastom bipolar: Factors implicats i seguiment als 4 anys.
Degree: Departament de Psiquiatria i Psicobiologia Clínica, 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/51476
► El trastorn bipolar és una malaltia altament discapacitant i que té un gran impacte en la vida dels pacients. L’any 2007, el Programa de Trastorn…
(more)
▼ El trastorn bipolar és una malaltia altament discapacitant i que té un gran impacte en la vida dels pacients. L’any 2007, el Programa
de Trastorn Bipolar
de l’Hospital Clínic juntament amb la col•laboració d’altres centres internacionals, va crear una escala anomenada Functioning Assessment Short Test (FAST). Aquest instrument va surgir com a resposta a la necessitat que existia, tant en la pràctica clínica com en la recerca, d’una escala clínica que avalués el funcionament psicosocial dels pacients amb trastorn bipolar. Existeixen moltes escales per mesurar el funcionament psicosocial en les poblacions psiquiàtriques però cap d’elles és específica pel trastorn bipolar. A més la utilització
de diferents instruments
de mesura i paràmetres
de discapacitat al llarg
de la literatura fan difícil la comparació entre estudis.
A més, la FAST com a escala
de mesura quantitativa del funcionament psicosocial té molts avantatges respecte les que s’han utilitzat fins al moment: a) està dissenyada per experts en trastorn bipolar; per tant, els ítems que s’exploren reflecteixen realment les àrees on els pacients presenten més dificultats; b) l’avaluació és clínica, per tant no només es basa en les respostes del pacient sinó també es complementa la información amb altres fonts (curs clínic, avaluació del psiquiatre, informació dels familiars...).
D’aquesta manera es superen moltes fonts
de biaix típiques dels instruments d’autoavaluació, com per exemple l’estat d’ànim concomitant a l’avaluació que pot afectar positiva o negativament les respostes que dóna el pacient; c) finalment, una altra avantatge és la facilitat i rapidesa en la seva aplicació que la fa idònia per ser utilitzada tant en context
de recerca com en la pràctica clínica diària.
Amb la validació
de la FAST, l’any 2007 , coincidint amb la meva incorporació a
l’equip, es va obrir un nou horitzó per explorar el funcionament en el trastorn bipolar amb aquesta nova escala i respondre preguntes que fins ara no quedaven clares en la literatura.
Així doncs, el primer pas va ser vincular-me en un estudi que ja estava iniciat, on s’avaluava el funcionament dels pacients amb trastorn bipolar en els tres estats diferents
de la malaltia: eutímia, depressió i (hipo)mania en comparació amb un grup
de controls sans. En aquest estudi, es va comprovar que la simptomatologia depressiva era més discapacitant que la maníaca però també es va observar que els pacients eutímics presentaven dificultats en el funcionament psicosocial.
Amb el segon estudi (es va comparar una mostra
de pacients eutímics dividits en funció
de la tipologia diagnòstica (subtipus I vs. subtipus II) ja que revisant la literatura no quedava clar fins a quin punt aquest factor podria influenciar el funcionament psicosocial dels pacients eutímics.
Finalment i aprofitant que l’escala FAST permet avaluar tant el funcionament global com també l’estudi
de dominis específics del funcionament psicosocial, es va portar a terme un tercer estudi per tal d’analitzar quines variables clíniques i neurocognitives…
Advisors/Committee Members: false (authoremailshow), Vieta i Pascual, Eduard, 1963- (director), Martínez-Arán, Anabel, 1971- (director), false (authorsendemail).
Subjects/Keywords: Trastorn bipolar; Trastornos bipolares; Manic-depressive illness; Ciències de la Salut; 616.89
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bonnín Roig, C. d. M. (2011). Funcionament psicosocial en el trastom bipolar: Factors implicats i seguiment als 4 anys. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/51476
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bonnín Roig, Caterina del Mar. “Funcionament psicosocial en el trastom bipolar: Factors implicats i seguiment als 4 anys.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/51476.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bonnín Roig, Caterina del Mar. “Funcionament psicosocial en el trastom bipolar: Factors implicats i seguiment als 4 anys.” 2011. Web. 27 Feb 2021.
Vancouver:
Bonnín Roig CdM. Funcionament psicosocial en el trastom bipolar: Factors implicats i seguiment als 4 anys. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/51476.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bonnín Roig CdM. Funcionament psicosocial en el trastom bipolar: Factors implicats i seguiment als 4 anys. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/51476
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
14.
Silveira Quelhas, Diana Iris.
Immune responses to "Plasmodium falciparum" in Mozambican infants receiving Intermittent Preventive Treatment with Sulfadoxine Pyrimethamine.
Degree: 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/51637
► Malaria has a high toll on the lives of infants and children under the age of five in endemic areas. Control, and more recently, elimination…
(more)
▼ Malaria has a high toll on the lives of infants and children under the age of five in endemic areas. Control, and more recently, elimination agendas consist on implementing several measures simultaneously, including vector control, vaccines and drugs. The current Millenium Development Goals aim at reducing malaria mortality and morbidity in the two most vulnerable groups: pregnant women and children.
Intermittent Preventive Treatment in Infants with Sulphadoxine‐Pyrimethamine (IPTi-SP) delivered through routine EPI vaccination programs has shown to be efficacious in different transmission settings and the WHO has recently recommended its implementation as a malaria control tool. However, one of the main concerns has been the potential impairment of acquisition of naturally acquired immunity, and this could be a concern regarding IPTi.
This thesis reports on a series of studies conducted in a malaria endemic area of Manhiça, Mozambique, to assess the impact of IPTi‐SP on the development of immune responses to the Plasmodium falciparum parasite. In this work, we measured antibody and cellular immune parameters considered to be the most appropriate markers of protective immunity against malaria identified to date.
The most consistent finding was that IPTi-SP does not modify the magnitude of the immune responses acquired over the first two years of age in Mozambican children. In addition, we described the factors that affect the antibody and cellular immune responses, and reported those that correlated with prospective malaria incidence.
Based on the studies presented herein, we can conclude that IPTi‐SP does not interfere with immune responses that are considered major contributors to the acquisition of protective immunity to malaria in early infancy.
In summary, this thesis contributes to a more complete assessment of IPTi as a control measure that will possibly be implemented in the near future in malaria endemic areas of Africa and of the world. In addition, it aims to contribute to advance the knowledge on the acquisition of natural immunity in infancy which is poorly understood. Furthermore, this information will help to understand the factors that should be taken into account when designing and deploying other control measures for this age group.
Advisors/Committee Members: Universitat de Barcelona. Facultat de Medicina, false (authoremailshow), Dobaño, Carlota (director), Menéndez, Clara (director), false (authorsendemail).
Subjects/Keywords: Malaria; Malària; Malaria vaccine; Vacuna de la malaria; Vacuna de la malària; Ciències de la Salut; 616.9
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Silveira Quelhas, D. I. (2011). Immune responses to "Plasmodium falciparum" in Mozambican infants receiving Intermittent Preventive Treatment with Sulfadoxine Pyrimethamine. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/51637
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Silveira Quelhas, Diana Iris. “Immune responses to "Plasmodium falciparum" in Mozambican infants receiving Intermittent Preventive Treatment with Sulfadoxine Pyrimethamine.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/51637.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Silveira Quelhas, Diana Iris. “Immune responses to "Plasmodium falciparum" in Mozambican infants receiving Intermittent Preventive Treatment with Sulfadoxine Pyrimethamine.” 2011. Web. 27 Feb 2021.
Vancouver:
Silveira Quelhas DI. Immune responses to "Plasmodium falciparum" in Mozambican infants receiving Intermittent Preventive Treatment with Sulfadoxine Pyrimethamine. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/51637.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Silveira Quelhas DI. Immune responses to "Plasmodium falciparum" in Mozambican infants receiving Intermittent Preventive Treatment with Sulfadoxine Pyrimethamine. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/51637
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
15.
Luque Corredera, Carlos.
Asymmetric Synthesis of Decahydroquinolines via Organocatalysis: Total Synthesis of (+)-Lycoposerramine Z and (-)-Cermizine B.
Degree: Departament de Farmacologia i Química Terapèutica, 2014, Universitat de Barcelona
URL: http://hdl.handle.net/10803/307218
► 1) The treatment of a tert-butyl beta-keto ester tethered to an omega-amino monoprotected group with crotonaldehyde using LiOH as the base, furnishes domino reactions involving…
(more)
▼ 1) The treatment of a tert-butyl beta-keto ester tethered to an omega-amino monoprotected group with crotonaldehyde using LiOH as the base, furnishes domino reactions involving the consecutive formation of two C-C bonds and one C-N bond in a sequence that comprises an intermolecular Michael process, followed by intramolecular aldol and aza-Michael reactions. This general methodology for the diastereoselective synthesis of 5-oxodecahydroquinolines implies a biscyclization and the formation of three stereocontrolled stereogenic centres in a single operational step. The resulting cis-decahydroquinoline of type A (arising from the dealkoxycarbonylation reaction) allows, through thermodynamic controlled processes, access to all other relative stereochemistries, providing a set of valuable building blocks (decahydroquinolines of Type B, C, and D).
2) The asymmetric Robinson annulation / intramolecular aza-Michael reaction leading to decahydroquinolines in a single step, from an achiral and acyclic simple beta-keto ester, is not feasible using the classical reaction conditions developed by Jørgensen to synthesize cyclohexenones. After the initial organocatalyzed Michael addition, treatment with acid to promote the dealkoxycarbonylation and intramolecular aldol reaction failed, probably due to the presence of the nucleophilic nitrogen atom in the structure. In contrast, if LiOH is added after the organocatalysis step, the Robinson annulation and the following azacyclization take place in very good yield. The method has been optimized after screenings for the solvent, temperature, additives and catalysts. The resulting decahydroquinoline building block has been used in the total synthesis of the phlegmarine alkaloid lycoposerramine Z, which has been efficiently synthesized: 10 steps and 20% overall yield.
3) A potent solution for the problematic stop-and-go procedure, in which it is necessary to stop the synthesis after each operational step to carry out the work-up and purification of intermediates, is the combination of pot economy strategy and tandem reactions. Following this alternative strategy, we have developed an efficient synthesis of the alkaloid cermizine B via an uninterrupted sequence of 7 reactions, which allowed 1 gram of the natural product to be synthesized, employing 8-12 h of operational time over 10 days.
4) The scope of the strategy developed in the experimental studies carried out in the present PhD Thesis has been extended and applied to other research projects. Thus, the described methodology is not only applicable to the decahydroquinoline nucleus for the total synthesis of phlegmarine alkaloids, but can also be potentially applied to the synthesis of other members of the Lycopodium family. Furthermore, the method can also provide access to other nitrogen-containing heterocycles such as morphans or octahydroindoles with some structural changes in the starting materials (such as the number of carbon atoms in the initial beta-keto ester or the installation of the nitrogen atom in the Michael…
Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Bonjoch i Sesé, Josep (director), Bradshaw, Ben (director), false (authorsendemail).
Subjects/Keywords: Catàlisi; Catálisis; Catalysis; Estereoquímica; Stereochemistry; Compostos heterocíclics; Compuestos heterocíclicos; Heterocyclic compounds; Anàlisi conformacional; Análisis conformacional; Conformational analysis; Ciències de la Salut; 615
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Luque Corredera, C. (2014). Asymmetric Synthesis of Decahydroquinolines via Organocatalysis: Total Synthesis of (+)-Lycoposerramine Z and (-)-Cermizine B. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/307218
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Luque Corredera, Carlos. “Asymmetric Synthesis of Decahydroquinolines via Organocatalysis: Total Synthesis of (+)-Lycoposerramine Z and (-)-Cermizine B.” 2014. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/307218.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Luque Corredera, Carlos. “Asymmetric Synthesis of Decahydroquinolines via Organocatalysis: Total Synthesis of (+)-Lycoposerramine Z and (-)-Cermizine B.” 2014. Web. 27 Feb 2021.
Vancouver:
Luque Corredera C. Asymmetric Synthesis of Decahydroquinolines via Organocatalysis: Total Synthesis of (+)-Lycoposerramine Z and (-)-Cermizine B. [Internet] [Thesis]. Universitat de Barcelona; 2014. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/307218.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Luque Corredera C. Asymmetric Synthesis of Decahydroquinolines via Organocatalysis: Total Synthesis of (+)-Lycoposerramine Z and (-)-Cermizine B. [Thesis]. Universitat de Barcelona; 2014. Available from: http://hdl.handle.net/10803/307218
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
16.
Casas Fernández, Carlos.
Synthesis of C10‐C16 linear symmetrical ethers from n‐alcohols over heterogeneous acid catalysts.
Degree: Departament d'Enginyeria Química, 2013, Universitat de Barcelona
URL: http://hdl.handle.net/10803/307535
► La reformulació del combustible dièsel amb compostos oxigenats com els èters lineals de més de 9 carbonis permet augmentar la qualitat ambiental del combustible als…
(more)
▼ La reformulació del combustible dièsel amb compostos oxigenats com els èters lineals
de més
de 9 carbonis permet augmentar la qualitat ambiental del combustible als motors dièsel. Els èters lineals simètrics com el di-n-pentil èter (DNPE), di-n-hexil èter (DNHE) i di-n-octil èter (DNOE) es presenten com tres compostos amb propietats excel·lents com additius pel dièsel ja que n’augmenten l’índex
de cetà i en milloren les propietats fluidodinàmiques del dièsel.
Aquest treball demostra que la deshidratació
de 1-octanol a DNOE és possible sobre catalitzadors sòlids àcids (resines
de bescanvi iònic
de poliestirè reticulades amb divinilbenzè (PE-DVB) i zeolites) i a la vegada continua amb la sèrie
de síntesis d’èters lineals simètrics a partir
de n-alcohols començada amb el DNPE i DNHE en treballs previs.
Les resines
de bescanvi iònic PE-DVB macroreticulars amb baixos continguts
de DVB i les resines tipus gel foren les resines que mes rendiment a DNPE, DNHE i DNOE van obtenir. Amb zeolites es va observar que la obtenció d’èters lineals simètrics amb estava fortament lligada a la superfície mesoporosa i al nombre
de centres àcids
de la zeolita.
En aquest treball es va determinar la constant d’equilibri
de la reacció
de deshidratació
de 1-octanol a DNOE i es va demostrar que la reacció mencionada és una reacció exotèrmica. Fruit
de l’estudi d’equilibri es van poder corregir els mètodes actuals per estimar l’entropia molar del DNOE, proposant-ne un valor nou.
Finalment es va desenvolupar un estudi cinètic sobre la resina termoestable Amberlyst 70 i sobre zeolites. A l’estudi
de la deshidratació
de 1-octanol a DNOE sobre Amberlyst 70 es va proposar un model cinètic basat en un mecanisme Rideal-Eley (RE) on una molècula
de 1-octanol adsorbida al catalitzador reacciona amb una altra molècula
de 1-octanol
de la fase líquida. Així mateix es va constatar que la presència d’aigua exercia un fort efecte desactivador
de la reacció i es va quantificar al model cinètic mitjançant un terme corrector basat en la isoterma Freundlich. Sobre les zeolites es van proposar dos tipus
de models cinètics basats en mecanismes Langmuir-Hinselwood-Hougen-Watson (LHHW) i RE per les síntesis
de DNOE i DNHE.
Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Tejero Salvador, Xavier (director), Iborra Urios, Montserrat (codirector), false (authorsendemail).
Subjects/Keywords: Èters; Éteres; Ethers; Resines de bescanvi iònic; Resinas de intercambio iónico; Ion exchange resins; Zeolites; Zeolitas; Alcohols; Alcoholes; Ciències Experimentals i Matemàtiques; 54
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Casas Fernández, C. (2013). Synthesis of C10‐C16 linear symmetrical ethers from n‐alcohols over heterogeneous acid catalysts. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/307535
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Casas Fernández, Carlos. “Synthesis of C10‐C16 linear symmetrical ethers from n‐alcohols over heterogeneous acid catalysts.” 2013. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/307535.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Casas Fernández, Carlos. “Synthesis of C10‐C16 linear symmetrical ethers from n‐alcohols over heterogeneous acid catalysts.” 2013. Web. 27 Feb 2021.
Vancouver:
Casas Fernández C. Synthesis of C10‐C16 linear symmetrical ethers from n‐alcohols over heterogeneous acid catalysts. [Internet] [Thesis]. Universitat de Barcelona; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/307535.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Casas Fernández C. Synthesis of C10‐C16 linear symmetrical ethers from n‐alcohols over heterogeneous acid catalysts. [Thesis]. Universitat de Barcelona; 2013. Available from: http://hdl.handle.net/10803/307535
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
17.
Cruz González, Natalia de la.
Estudio de la eliminación de contaminantes emergentes en aguas mediante Procesos de Oxidación Avanzados.
Degree: Departament d'Enginyeria Química, 2013, Universitat de Barcelona
URL: http://hdl.handle.net/10803/308120
► This work focuses on the remediation of emergent contaminants by using AOPs. In this way, the study has been divided in three parts: ▪ Degradation…
(more)
▼ This work focuses on the remediation of emergent contaminants by using AOPs. In this way, the study has been divided in three parts:
▪ Degradation of a model compound, the pharmaceutical propranolol (PRO), at laboratory scale, by photocatalysis, photo-Fenton and direct photolysis. Photocatalysis was also studied in a solar pilot plant, to approximate to real application.
▪ Remediation of a large ECs group including pharmaceuticals, biocides/pesticides and corrosion inhibitors, found in a MWTP effluent. AOPs employed were UV, UV/H2O2, ultrasound (US) and combined US, Fenton and photo-Fenton at neutral pH.
▪ Radiation is a key parameter in photocatalytic systems. Thus, an actinometric method was studied to determine the radiation entering a photreactor with the presence of a catalyst (TiO2) in suspension.
The work on PRO remediation showed that direct photolysis, photocatalysis and photo-Fenton could degrade PRO (photocatalysis: 99%, 360 min, photo-Fenton: 99%, 15 min, photolysis: 84%, 360 min). Employing direct photolysis, mineralization obtained was poor (6%, 360 min). Good mineralizations were achieved with photocatalysis (58%, 360 min) and photo-Fenton (60%, 60 min). Solar photocatalysis was also found to be an efficient method for PRO remediation. After 240 min, 81% of degradation was reached, with a mineralization of 31%.
In the remediation of a ECs group found in a MWTP effluent (at nanograms per litre), the most efficient treatment was the photo-Fenton with UV at 254 nm. The average degradation after 5 min was 85% (30 mg L-1 of H2O2 + iron present in the wastewater). Influence of different parameters was studied: H2O2 initial concentration, iron concentration and type (Fe II-III), radiation source, temperature and oxygen.
The study of a ECs group remediation at pilot showed that the treatment with UV (254 nm) + H2O2 + Fe (not added but present in WW) at natural pH, leaded to degradations higher tan 80% with very low residence times. The most economical treatment needed 50 mg L-1 of H2O2 and a residence time of 10 s.
In the section of the radiation measurement in photocatalytic systems, it was demonstrated that the o-NB actinometry could be used to measure the involved radiation when there is TiO2 in suspension present inside the photoreactor.
Advisors/Committee Members: [email protected] (authoremail), false (authoremailshow), Esplugas Vidal, Santiago (director), Giménez Farreras, Jaume (codirector), false (authorsendemail).
Subjects/Keywords: Contaminants; Contaminantes; Pollutants; Oxidació; Oxidación; Oxidation; Fotocatàlisi; Fotocatálisis; Photocatalysis; Ciències Experimentals i Matemàtiques; 54
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cruz González, N. d. l. (2013). Estudio de la eliminación de contaminantes emergentes en aguas mediante Procesos de Oxidación Avanzados. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/308120
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Cruz González, Natalia de la. “Estudio de la eliminación de contaminantes emergentes en aguas mediante Procesos de Oxidación Avanzados.” 2013. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/308120.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cruz González, Natalia de la. “Estudio de la eliminación de contaminantes emergentes en aguas mediante Procesos de Oxidación Avanzados.” 2013. Web. 27 Feb 2021.
Vancouver:
Cruz González Ndl. Estudio de la eliminación de contaminantes emergentes en aguas mediante Procesos de Oxidación Avanzados. [Internet] [Thesis]. Universitat de Barcelona; 2013. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/308120.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cruz González Ndl. Estudio de la eliminación de contaminantes emergentes en aguas mediante Procesos de Oxidación Avanzados. [Thesis]. Universitat de Barcelona; 2013. Available from: http://hdl.handle.net/10803/308120
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
18.
Valcárcel Rodríguez, Manoel María.
Reconstrucción y restitución 3D del anticlinal de Puerta-Pareja y estudio de su evolución deformacional y cinemática en su contexto regional (cuenca de Loranca y Sierra de Altomira).
Degree: Departament de Geodinàmica i Geofísica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/336373
► This Thesis aims to characterize the formation and deformational and kinematic evolution of the Altomira and Loranca fold-and-thrust belts (Altomira Range and Loranca basin, SW…
(more)
▼ This Thesis aims to characterize the formation and deformational and kinematic evolution of the Altomira and Loranca fold-and-thrust belts (Altomira Range and Loranca basin, SW Iberian Chain, Central Spain) and the structural configuration and evaluation as a potential reservoir for CO2 sequestration of the Puerta-Pareja anticline, located in the northern sector of the Loranca basin. Several methods were integrated in order to overcome the limitations of every single study in the studied area and to achieve the proposed objetives. Thus, at regional scale, a E-W cross-section and its 2D restoration, an analysis of the anisotropy of the magnetic susceptibility (AMS) and a paleomagnetic analysis were performed and, focused on the Puerta-Pareja anticline, its 3D reconstruction and restoration and analysis of its fracturation were conducted.
The results of the AMS analysis show a general E-W layer-parallel shortening orientation during and shortly prior to the formation of Altomira and Loranca fold-and-thrust belts. Paleomagnetic data from Middle Eocene to Lower Miocene rocks reveal the absence of vertical-axis rotations in the central sector of Loranca-Altomira where structures are oriented N-S, and up to 17º of clockwise and 21º of counter-clockwise vertical-axis rotations in the northern and southern sectors, respectively. The integration of paleomagnetic data with previous structural data from other authors shows that the piggy-back sequence of thrusting at the southern sector was synchronous to the counter-clockwise rotation during the Oligocene, whereas at the northern sector structures formed in a break-back sequence and experienced a clockwise rotation during Miocene.
The Puerta-Pareja anticline is a NNE-SSW fault-propagation fold associated to the Pareja thrust and initially nucleated as a detachment fold. At its northern part, the La Puerta thrust cuts its front limb defining a steep-limb breakthrough configuration. Three minor thrusts cut its back limb: the Viana (NNE-SSW), the Villaescusa (NW-SE) and the Peralveche (NW-SE) thrusts. All of these thrusts detached on the Keuper facies following a break back sequence. The 3D reconstruction and restoration of this anticline shows the absence of any basement structure suitable for sequestering CO2 underneath.
The analysis of the chronological and geometrical relationships between the fracture pattern (mainly transverse and longitudinal fractures) and the vertical-axis rotation at the Puerta-Pareja area reveals that the initial orientation of the Puerta-Pareja anticline was N-S, perpendicular to the E-W regional shortening direction. Subsequently, local differences in the amount of the clockwise vertical-axis rotation occurred generated the present variability of axial orientations.
Advisors/Committee Members: false (authoremailshow), Muñoz, J. A. (director), Soto Marín, Ruth (director), false (authorsendemail).
Subjects/Keywords: Geofísica; Geophysics; Cinemàtica; Cinemática; Kinematics; Deformació de les roques; Deformación de rocas; Rock deformation; Paleomagnetisme; Paleomagnetismo; Paleomagnetism; Visualització tridimensional; Sistemas de imágenes tridimensionales; Three-dimensional display systems; Ciències Experimentals i Matemàtiques; 55
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Valcárcel Rodríguez, M. M. (2015). Reconstrucción y restitución 3D del anticlinal de Puerta-Pareja y estudio de su evolución deformacional y cinemática en su contexto regional (cuenca de Loranca y Sierra de Altomira). (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/336373
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Valcárcel Rodríguez, Manoel María. “Reconstrucción y restitución 3D del anticlinal de Puerta-Pareja y estudio de su evolución deformacional y cinemática en su contexto regional (cuenca de Loranca y Sierra de Altomira).” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/336373.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Valcárcel Rodríguez, Manoel María. “Reconstrucción y restitución 3D del anticlinal de Puerta-Pareja y estudio de su evolución deformacional y cinemática en su contexto regional (cuenca de Loranca y Sierra de Altomira).” 2015. Web. 27 Feb 2021.
Vancouver:
Valcárcel Rodríguez MM. Reconstrucción y restitución 3D del anticlinal de Puerta-Pareja y estudio de su evolución deformacional y cinemática en su contexto regional (cuenca de Loranca y Sierra de Altomira). [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/336373.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Valcárcel Rodríguez MM. Reconstrucción y restitución 3D del anticlinal de Puerta-Pareja y estudio de su evolución deformacional y cinemática en su contexto regional (cuenca de Loranca y Sierra de Altomira). [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/336373
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
19.
Pairó Castiñeira, Erola.
Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques.
Degree: Departament d'Electrònica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/336663
► Gene expression is a complex and highly regulated process. Most of the regulation is controlled by short DNA sequences that can be bound by some…
(more)
▼ Gene expression is a complex and highly regulated process. Most of the regulation is controlled by short DNA sequences that can be bound by some proteins called transcription factors (TF). Binding to these sites, the transcription factors, can start the transcription of mRNA, stop it, or just control the amount of mRNA produced. The DNA binding sites of these transcription factors have some specific characteristics: (1) They are short sequences (2) They can be located anywhere in the genome and (3) they are degenerated, which means that some mutations in the binding site sequence do not alter its functionality. These characteristics made impossible to look for a specific sequences in a specific region and, create the need to model the binding sites in order to detect them.
Due to the importance of gene expression in the study of cell differentiation and its implication in some genetic diseases, many computational models and experimental processes to model binding site motifs and then find them into a genome have appeared. The computational models can be divided into two main groups: motif discovery methods which try to find binding sites within a set of co-regulated sequences without previous knowledge and motif search methods which use previous known sites to create a model and then try to locate binding sequences fitting this model. Most of the algorithms for binding site detection (both discovery and search) are based on Position weight matrices (PWM), which are matrices of frequencies of each nucleotide in each position, and assume that positions are independent. Some others take into account interdependences, but they need many sequences to be trained and high computational times.
The focus of this thesis is to use the conversion from symbolical to numerical DNA and the previous knowledge of binding site sequences in order to construct models for DNA motifs. In this context, known multivariate signal processing techniques can be the ideal tools to construct models which can take into account interdependences without needing a large number of sequences or a high computational time.
To characterize the transcriptions factors, the relationships TF-protein were studied, showing that most transcription factors regulate the expression of 5-10 genes and at the same time most proteins are regulated by more than 1 TF. The study of interdependences between positions showed that more than 90% of the binding sites have significant interdependences, but that the percentage of interdependences is not enough to classify TF according to structure.
The conversion of DNA motif matrices into numerical matrices allows the use ofl Component Analysis (PCA) to model the binding sites which captures the information of the interdependences into the covariance, a second order statistics. Using the hypothesis that the binding sites will fit better to the PCA model than genomic, sequences, the Q-residuals can be used to detect binding sites within the genome. When compared to PWM the Q-residuals detector performs as least as…
Advisors/Committee Members: false (authoremailshow), Marco Colás, Santiago (director), Perera Lluna, Alexandre (director), false (authorsendemail).
Subjects/Keywords: Electrònica; Electrónica; Electronics; Factors de transcripció; Factores de transcripción; Transcription factors; Processament de senyals; Proceso de señales; Signal processing; Ciències Experimentals i Matemàtiques; 53
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pairó Castiñeira, E. (2015). Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/336663
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pairó Castiñeira, Erola. “Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/336663.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pairó Castiñeira, Erola. “Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques.” 2015. Web. 27 Feb 2021.
Vancouver:
Pairó Castiñeira E. Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/336663.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pairó Castiñeira E. Detection of Transcription Factor Binding Sites by Means of Multivariate Signal Processing Techniques. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/336663
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
20.
Huertas López, David.
Estudi de la distribució dels compostos organoclorats en els organismes fluvials sota la influència dels efluents d’una planta clor-àlcali (riu Ebre, entre Mequinensa i el Delta).
Degree: Departament de Química Analítica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/336970
► Persistent organic pollutants (POPs) are a well-known group of contaminants that have in common some characteristics. As its name indicates, they can remain in the…
(more)
▼ Persistent organic pollutants (POPs) are a well-known group of contaminants that have in common some characteristics. As its name indicates, they can remain in the environment for long periods of time, they are stable and do not degrade easily. Furthermore, they are toxic and because of their physical and chemical properties they can be distributed throughout the planet reaching remote places far away from pollution sources. In addition, they are lipophilic and with great capacity to bioaccumulate inside the organisms so they are biomagnified along food webs.
The production of organochlorine compounds during the last century by the chlor-alkali plant located at Flix (South West Catalonia) has generated an accumulation of polluted muds inside the water reservoir from this locality. Concerning the concentrations of organic pollutants, so far the organisms living in the last stretch of the Ebro River have only been considered partially. This thesis includes a complete study of the distribution and accumulation of these compounds in fluvial food webs starting from the lower trophic levels and including main predators. Different organochlorine compounds have been analyzed in a wide range of biotic and non-biotic matrices: chlorobenzenes (PeCB and HCB), polychlorobiphenyls (PCBs), hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethane (DDT) and its metabolites, as well as the polychlorostyrenes (PCSs). To complement this research, the presence of these compounds has been assessed in sites located far away from main pollution sources. To achieve this, samples from the last stretch of the Ebro River have been analysed in order to assess if there were differences in concentrations in comparison to samples from the Flix water reservoir, differences in distribution patterns of POPs, or differences at the biomagnification processes of these compounds.
Firstly it studies concentrations of POPs and the relationships between lower trophic levels from the Flix water reservoir. Secondly it evaluates levels of contaminants from fish inside the Flix water reservoir and downstream. Third, it determines the effect that POPs have at higher trophic levels from fluvial food webs: birds. Finally, it integrates all the information related to the biomagnification of pollutants along the food web within the Flix water reservoir.
Advisors/Committee Members: false (authoremailshow), Grimalt Obrador, Joan (director), Santos Vicente, Francisco Javier (tutor), false (authorsendemail).
Subjects/Keywords: Contaminants orgànics de l'aigua; Contaminantes orgánicos en el agua; Organic water pollutants; Cadenes alimentàries (Ecologia); Cadenas tróficas (Ecología); Food chains (Ecology); Efecte de la contaminació sobre els animals; Animals - Effect of pollution on; Efecto de la contaminación sobre los animales; Ciències Experimentals i Matemàtiques; 543
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Huertas López, D. (2015). Estudi de la distribució dels compostos organoclorats en els organismes fluvials sota la influència dels efluents d’una planta clor-àlcali (riu Ebre, entre Mequinensa i el Delta). (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/336970
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huertas López, David. “Estudi de la distribució dels compostos organoclorats en els organismes fluvials sota la influència dels efluents d’una planta clor-àlcali (riu Ebre, entre Mequinensa i el Delta).” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/336970.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huertas López, David. “Estudi de la distribució dels compostos organoclorats en els organismes fluvials sota la influència dels efluents d’una planta clor-àlcali (riu Ebre, entre Mequinensa i el Delta).” 2015. Web. 27 Feb 2021.
Vancouver:
Huertas López D. Estudi de la distribució dels compostos organoclorats en els organismes fluvials sota la influència dels efluents d’una planta clor-àlcali (riu Ebre, entre Mequinensa i el Delta). [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/336970.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huertas López D. Estudi de la distribució dels compostos organoclorats en els organismes fluvials sota la influència dels efluents d’una planta clor-àlcali (riu Ebre, entre Mequinensa i el Delta). [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/336970
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
21.
Pérez-Maciá, María Ángeles.
Liquid Phase Dehydration of 1-Butanol to Di-n-butyl ether Experimental Performance, Modeling and Simulation of Ion Exchange Resins as Catalysts.
Degree: Departament d'Enginyeria Química, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/336975
► Di-n-butyl ether (DNBE) is considered a very attractive oxygenate compound to reformulate diesel fuel. The research work performed along this thesis has clearly proven that…
(more)
▼ Di-n-butyl ether (DNBE) is considered a very attractive oxygenate compound to reformulate diesel fuel. The research work performed along this thesis has clearly proven that sulfonic P(S-DVB) ion exchange resins are suitable catalysts for the synthesis of DNBE from the liquid phase dehydration of 1-butanol at the temperature range of 140-190 °C. A catalyst screening of acidic P(S-DVB) ion exchange resins showed that resins activity is enhanced with high acid capacities and with polymer matrices that are able to swell moderately allowing 1-butanol ready access to the active sites but without resulting in very large distance between the active centers. The resin Amberlyst 36 (oversulfonated, medium values of %DVB) proved to be the most active catalysts tested. However, in an industrial process a high selectivity to DNBE is extremely desirable from an environmental and economic standpoint, and resins that present a more elastic polymer matrix and higher ability to swell (gel type resins and Amberlyst 70) are the ones that present higher selectivities. Among all the tested resins, Amberlyst 70 was selected as the most suitable catalyst for industrial use given its excellent property balance: satisfactory activity, high selectivity to DNBE and thermal stability up to 463 K.
The relatively large value found for the thermodynamic equilibrium constant of DNBE formation and the fact that the formation of the secondary product 1-butene was extremely slow assure high conversion levels in an industrial etherification process. DNBE formation proved to be a slightly exothermic reaction, almost athermic, whereas 1-butene formation was found to be an endothermic reaction.
A comprehensive kinetic analysis enlightened that the reaction rate to form DNBE on Amberlyst 70 is highly influenced by the temperature and the presence of water. Two kinetic models that are able to predict the reaction rates of DNBE formation were identified. One of them stems from a Langmuir-Hinshelwood-Hougen-Watson (LHHW) formalism in which two adsorbed molecules of 1-butanol react to yield ether and water, being the reversible surface reaction the rate limiting step. The other one stems from a mechanism in which the rate limiting step is the desorption of water and where the adsorption of DNBE is negligible. Both models present several characteristics in common: in both water inhibition effect is correctly represented by a correction factor derived from a Freundlich adsorption isotherm; the number of free active sites is found to be negligible compared to the occupied ones; both present similar values of apparent activation energies (122 ± 2 kJ/mol). The study of the influence of typical 1-butanol impurities (isobutanol or ethanol and acetone, depending on the production process) demonstrated that isobutanol enhances the formation of branched ethers whereas ethanol leads to the formation of ethyl butyl ether and di- ethyl ether and acetone hardly reacts. In the second part of this thesis, it was demonstrated the suitability of molecular dynamics…
Advisors/Committee Members: false (authoremailshow), Iborra Urios, Montserrat (director), Bringué Tomàs, Roger (director), Iborra Urios, Montserrat (tutor), false (authorsendemail).
Subjects/Keywords: Resines de bescanvi iònic; Resinas de intercambio iónico; Ion exchange resins; Alcohol butílic; Butanol; Èters; Éteres; Ethers; Ciències Experimentals i Matemàtiques; 54
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pérez-Maciá, M. . (2015). Liquid Phase Dehydration of 1-Butanol to Di-n-butyl ether Experimental Performance, Modeling and Simulation of Ion Exchange Resins as Catalysts. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/336975
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pérez-Maciá, María Ángeles. “Liquid Phase Dehydration of 1-Butanol to Di-n-butyl ether Experimental Performance, Modeling and Simulation of Ion Exchange Resins as Catalysts.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/336975.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pérez-Maciá, María Ángeles. “Liquid Phase Dehydration of 1-Butanol to Di-n-butyl ether Experimental Performance, Modeling and Simulation of Ion Exchange Resins as Catalysts.” 2015. Web. 27 Feb 2021.
Vancouver:
Pérez-Maciá M. Liquid Phase Dehydration of 1-Butanol to Di-n-butyl ether Experimental Performance, Modeling and Simulation of Ion Exchange Resins as Catalysts. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/336975.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pérez-Maciá M. Liquid Phase Dehydration of 1-Butanol to Di-n-butyl ether Experimental Performance, Modeling and Simulation of Ion Exchange Resins as Catalysts. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/336975
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
22.
Piqueras Solsona, Sara.
Disseny i aplicació d’eines quimiomètriques per a l’anàlisi d’imatges hiperespectrals.
Degree: Departament de Química Analítica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/345231
► Hyperspectral images are unique instrumental measurements that contain chemical (spectral) information and detailed knowledge of the distribution of the sample constituents on the sample surface…
(more)
▼ Hyperspectral images are unique instrumental measurements that contain chemical (spectral) information and detailed knowledge of the distribution of the sample constituents on the sample surface scanned. This thesis is mainly oriented to know in depth the nature of this instrumental measurement in order to design and adapt specific chemometric tools that help in the proposal of general protocols for the interpretation of hyperspectral images according to the spectroscopic technique used and the chemical problem of interest. Particularly, much work has been focused on the study of the potential of multivariate curve resolution-alternating least squares, MCR-ALS, for the analysis of hyperspectral images. This algorithm provides distribution maps and pure spectra for the image constituents from the sole information contained in the raw measurement. Within this framework, individual analysis of images and image multiset analysis on data structures formed by images collected with the same technique or by images coming from different spectroscopic platforms have been explored. From the study of Raman and IR hyperspectral images linked to different chemical problem typologies, data analysis protocols have been proposed that include preprocessing of original data, recovery of distribution maps and pure spectra of image constituents and postprocessing of resolved maps and pure spectra to obtain further information. Resolved distribution maps and pure spectra provide diverse information, such as identification, quantification and heterogeneity characterization of the image constituents or the global and local description of a process. The use of resolved distribution maps has proven to be an excellent starting point for other kinds of analysis, such as image segmentation or super-resolution algorithms, oriented to improve the spatial resolution of experimental hyperspectral images. Combined multiset resolution and segmentation analysis has been shown to be very useful for the differentiation of populations of biological tissues with different pathological conditions. Finally, a strategy for data fusion of hyperspectral images from different spectroscopic platforms and different spatial resolution has been proposed. This approach uses a new variant of MCR-ALS for incomplete multiset structures that takes advantage of the complementary information provided by the different spectroscopic techniques without losing spatial resolution.
Advisors/Committee Members: false (authoremailshow), Juan Capdevila, Anna de (director), Tauler Ferré, Romà (director), false (authorsendemail).
Subjects/Keywords: Quimiometria; Quimiometría; Chemometrics; Espectroscòpia infraroja; Espectroscopia infrarroja; Infrared spectroscopy; Espectroscòpia Raman; Espectroscopia Raman; Raman spectroscopy; Imatges hiperespectrals; Imágenes hiperespectrales; Hyperspectral imaging; Ciències Experimentals i Matemàtiques; 543
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Piqueras Solsona, S. (2015). Disseny i aplicació d’eines quimiomètriques per a l’anàlisi d’imatges hiperespectrals. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/345231
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Piqueras Solsona, Sara. “Disseny i aplicació d’eines quimiomètriques per a l’anàlisi d’imatges hiperespectrals.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/345231.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Piqueras Solsona, Sara. “Disseny i aplicació d’eines quimiomètriques per a l’anàlisi d’imatges hiperespectrals.” 2015. Web. 27 Feb 2021.
Vancouver:
Piqueras Solsona S. Disseny i aplicació d’eines quimiomètriques per a l’anàlisi d’imatges hiperespectrals. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/345231.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Piqueras Solsona S. Disseny i aplicació d’eines quimiomètriques per a l’anàlisi d’imatges hiperespectrals. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/345231
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
23.
Caballero de Sánchez, Griselda Maruja.
Síntesis y caracterización de electrocatalizadores polimetálicos basados en Pt con estructura núcleo-corteza para pilas de combustible de electrolito polimérico.
Degree: Departament de Química Física, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/346052
► The synthesis and characterization of Pt(Cu) and Pt−Ru(Cu) nanoparticles on Vulcan XC72R carbon support has been studied in this thesis for their possible application as…
(more)
▼ The synthesis and characterization of Pt(Cu) and Pt−Ru(Cu) nanoparticles on Vulcan XC72R carbon support has been studied in this thesis for their possible application as anode catalysts in proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC). They were obtained on the glassy carbon (GC) of the rotating disk electrode (RDE) in the following sequence: i) Cu electrodeposition; ii) galvanic 2− ; and iii exchange with PtCl6 ) spontaneous deposition of Ru species. The Pt(Cu)/C and the the Pt−Ru(Cu)/C catalysts were obtained after the steps ii and iii, respectively. The different variables studied in the synthesis process were the oxidation potential of carbon, the electrodeposition potential of Cu, the Cu load on carbon, the times for the galvanic exchange with Pt and for the spontaneous deposition of the Ru species, and the stirring rate, commanded through the rotation rate of the RDE. The catalysts were electrochemically tested by chronoamperometry, linear sweep voltammetry and cyclic voltammetry, thus allowing obtaining the current efficiency for the Cu electrodeposition, the electrochemical active area (ECSA), and the characteristic potentials for the CO and the methanol oxidation. The best catalysts were studied by means of transmission electron microscopy (TEM), high resolution TEM (HRTEM), energy-dispersive spectroscopy (EDS), electron diffraction, fast Fourier transform (FFT), and X-ray photoelectron spectroscopy (XPS). The application of these techniques allowed optimizing the preparation conditions of the catalysts when applied to the CO and methanol oxidation, with nanoparticle size about 3−4 nm. The oxidation potentials of CO and methanol were about 0.05−0.1 V lower than those measured on Pt/C and Pt−Ru/C, thus indicating their higher activity, due to the effect of the Cu core on the structure of the Pt shell. In addition, a Pt economy of about 40−50% was achieved when using the synthesized Pt(Cu)/C and Pt−Ru(Cu)/C catalysts.
Advisors/Committee Members: false (authoremailshow), Cabot Julià, Pere-Lluís (director), Brillas, Enric (tutor), false (authorsendemail).
Subjects/Keywords: Piles de combustible; Pilas de combustible; Fuel cells; Electroquímica; Electrochemistry; Electrocatàlisi; Electrocatálisis; Electrocatalysis; Catalitzadors metàl·lics; Catalizadores metálicos; Metal catalysts; Ciències Experimentals i Matemàtiques; 544
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Caballero de Sánchez, G. M. (2015). Síntesis y caracterización de electrocatalizadores polimetálicos basados en Pt con estructura núcleo-corteza para pilas de combustible de electrolito polimérico. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/346052
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Caballero de Sánchez, Griselda Maruja. “Síntesis y caracterización de electrocatalizadores polimetálicos basados en Pt con estructura núcleo-corteza para pilas de combustible de electrolito polimérico.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/346052.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Caballero de Sánchez, Griselda Maruja. “Síntesis y caracterización de electrocatalizadores polimetálicos basados en Pt con estructura núcleo-corteza para pilas de combustible de electrolito polimérico.” 2015. Web. 27 Feb 2021.
Vancouver:
Caballero de Sánchez GM. Síntesis y caracterización de electrocatalizadores polimetálicos basados en Pt con estructura núcleo-corteza para pilas de combustible de electrolito polimérico. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/346052.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Caballero de Sánchez GM. Síntesis y caracterización de electrocatalizadores polimetálicos basados en Pt con estructura núcleo-corteza para pilas de combustible de electrolito polimérico. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/346052
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
24.
Morales Pérez, Laura.
Presència de dioxines i bifenils policlorats en àrees continentals i oceàniques.
Degree: Departament de Química Analítica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/346053
► Els contaminants orgànics persistents (COP) són un ampli grup de substàncies orgàniques molt resistents a la degradació fotolítica, biològica i química en el medi ambient,…
(more)
▼ Els contaminants orgànics persistents (COP) són un ampli grup
de substàncies orgàniques molt resistents a la degradació fotolítica, biològica i química en el medi ambient, fet que els concedeix llargs temps
de vida mitja en sòls, sediments, aire o biota. Això, sumat a la gran dispersió arreu del planeta d’aquests contaminants degut al seu transport a llargues distàncies (per les seves propietats físico-químiques) i a la seva toxicitat, fa que els COP esdevinguin un problema a escala global.
Les dioxines (PCDD/Fs) i els bifenils policlorats similars a les dioxines (dl-PCBs) són dues
de les principals famílies
de COP, conegudes per la seva gran toxicitat i el seu potencial carcinogènic. Els dl-PCBs van ser produïts per a diverses aplicacions industrials, però durant les dècades dels 70 i dels 80 es va prohibir la seva producció a la majoria dels països industrialitzats. Les dioxines no han estat mai produïdes a propòsit, però són subproductes
de diverses activitats industrials i processos
de combustió. En les darreres dècades s’ha començat a prendre consciència
de la perillositat d’aquestes substàncies tant pel medi ambient com per a la salut humana i s’han establert diverses regulacions per a controlar les seves emissions al medi així com organismes internacionals
de control
de COP com el Conveni d’Estocolm, que compromet els països signants a controlar els seus nivells ambientals existents. Les mostres analitzades en aquesta tesi en territori espanyol formen part dels compromisos adquirits amb el Conveni d’Estocolm.
En aquesta tesi s’han analitzat els nivells
de PCDD/Fs i dl-PCBs presents en diferents matrius ambientals i en diferents àrees, tant continentals com oceàniques, per tal
de tenir una visió més global
de la seva distribució i compartimentació ambiental, així com dels diferents processos que defineixen el seu destí final.
Per una banda s’han analitzat ous
de gavina, considerats un excel·lent bioindicador, en 5 parcs naturals distribuïts en la zona costanera d’Espanya durant 4 anys, analitzant les diferències espacials, temporals i entre dues espècies
de gavina cohabitants en la mateixa àrea. Les gavines es troben situades en una alta posició
de la cadena tròfica marina, fet que fa que l’acumulació
de COP a través
de la dieta sigui important. En cada posta es transfereix una part d’aquests contaminants als ous, esdevenint un bon bioindicador ambiental.
Per altra banda s’han analitzat diverses mostres atmosfèriques
de zones terrestres en diferents localitzacions d’Espanya i Colòmbia, en zones rurals/remotes, urbanes i industrials, utilitzant tant captadors actius, amb els que s’ha col·lectat la fracció
de PM10, com captadors passius. En les 12 estacions espanyoles s’han recollit mostres des del 2008 fins a l’actualitat en cada estació
de l’any, observat les tendències temporals i estacionals
de les àrees estudiades. A Colòmbia l’estudi es centra en una ciutat andina, situada a més
de 2000 metres d’altitud i propera a un volcà actiu. L’estudi
de la fracció
de PM10 amb captadors actius, al mateix…
Advisors/Committee Members: false (authoremailshow), Abad Holgado, Esteban (director), Santos Vicente, Francisco Javier (tutor), false (authorsendemail).
Subjects/Keywords: Dioxines; Dioxinas; Dioxins; Contaminants persistents; Contaminantes persistentes; Persistent pollutants; Medi ambient; Medio ambiente; Environment; Continents; Continentes; Oceans; Océanos; Ciències Experimentals i Matemàtiques; 543
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Morales Pérez, L. (2015). Presència de dioxines i bifenils policlorats en àrees continentals i oceàniques. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/346053
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Morales Pérez, Laura. “Presència de dioxines i bifenils policlorats en àrees continentals i oceàniques.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/346053.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Morales Pérez, Laura. “Presència de dioxines i bifenils policlorats en àrees continentals i oceàniques.” 2015. Web. 27 Feb 2021.
Vancouver:
Morales Pérez L. Presència de dioxines i bifenils policlorats en àrees continentals i oceàniques. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/346053.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Morales Pérez L. Presència de dioxines i bifenils policlorats en àrees continentals i oceàniques. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/346053
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
25.
Astefanei, Alina.
Analysis and characterisation of fullerene nanoparticles.
Degree: Departament de Química Analítica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/346062
► Los fulerenos son cada vez más utilizados en medicina (administración de fármacos), en procesos ambientales (remediación) y en la industria (células solares) debido a sus…
(more)
▼ Los fulerenos son cada vez más utilizados en medicina (administración
de fármacos), en procesos ambientales (remediación) y en la industria (células solares) debido a sus propiedades estructurales y electrónicas únicas. En este contexto, es importante aumentar el conocimiento actual con respecto a las características, el comportamiento, el destino y la toxicidad
de los fulerenos, una nueva clase
de contaminantes emergentes orgánicos. Por lo tanto, es cada vez es más importante ser capaz
de caracterizar y cuantificar las nanopartículas
de fulerenos en una amplia gama
de tipos
de matriz y para este fin, se necesita el desarrollo
de métodos analíticos para su análisis cuantitativo y cualitativo. Además
de la determinación
de las concentraciones
de fulerenos en matrices complejas, se requiere su caracterización en términos
de grado
de agregación, distribución del tamaño y morfología
de la superficie en soluciones acuosas
de diferentes características (fuerza iónica y pH) con el fin
de proporcionar herramientas para establecer su riesgo.
En esta tesis se han establecido metodologías para el análisis
de ocho fulerenos en muestras ambientales (agua y sedimentos) por cromatografía líquida acoplada a espectrometría
de masas y se ha detectado por la primera vez la presencia
de tres derivados
de fulerenos. Además, se ha desarollado metodología para el análisis
de fulerenos hidrofobicos y solubles en agua mediante la electroforesis capilar en medio no-acuoso (NACE) y la cromatografía capilar electrocinética micelar (MECC) y los metodos se han aplicado para la determinación
de C60 en productos cosmeticos.
Por último, se ha estudiado el comportamiento
de agregación
de los fulerenos en soluciones acuosas
de diferentes características (pHs, fuerzas iónicas) mediante diferentes técnicas (electroforesis capilar (CE), asymetrical flow-field flow fractionation (AF4), microscopia electrónica
de transmisión (TEM)). En este contexto se han determinado los tamaños
de los agregados formados en las condiciones evaluadas, y la morfología
de las partículas.
Advisors/Committee Members: false (authoremailshow), Galcerán Huguet, M. Teresa (director), Núñez Burcio, Oscar (tutor), false (authorsendemail).
Subjects/Keywords: Nanopartícules; Nanopartículas; Nanoparticles; Contaminants; Contaminantes; Pollutants; Cromatografia de líquids d'alta resolució; Cromatografía líquida de alta resolución; High performance liquid chromatography; Electroforesi capil·lar; Electroforesis capilar; Capillary electrophoresis; Ciències Experimentals i Matemàtiques; 543
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Astefanei, A. (2015). Analysis and characterisation of fullerene nanoparticles. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/346062
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Astefanei, Alina. “Analysis and characterisation of fullerene nanoparticles.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/346062.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Astefanei, Alina. “Analysis and characterisation of fullerene nanoparticles.” 2015. Web. 27 Feb 2021.
Vancouver:
Astefanei A. Analysis and characterisation of fullerene nanoparticles. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/346062.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Astefanei A. Analysis and characterisation of fullerene nanoparticles. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/346062
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
26.
Basset Olivé, Núria.
A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment.
Degree: Departament d'Enginyeria Química, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/346348
► Un dels reptes de les estacions depuradores d'aigües residuals (EDAR) és aconseguir una elevada eficiència d'eliminació de contaminants amb menys demanda energètica, atenent als requeriments…
(more)
▼ Un dels reptes
de les estacions depuradores d'aigües residuals (EDAR) és aconseguir una elevada eficiència d'eliminació
de contaminants amb menys demanda energètica, atenent als requeriments legals, cada dia més restrictius. A més a més, l'afany
de recuperació
de recursos a partir dels residus promou el desenvolupament
de noves tecnologies pel tractament d'aigües residuals valoritzant-ne la matèria orgànica i els nutrients que conté.
La digestió anaeròbia és un procés pel qual la matèria orgànica es transforma en una font d'energia, com és el biogàs. Actualment, la digestió anaeròbia s'aplica a residus com els fangs
de depuradora, purins, etc. En aquesta tesi, s'ha estudiat la digestió anaeròbia per al tractament d'aigües residuals amb poca càrrega orgànica, utilitzant bioreactors
de membrana anaeròbics (BRM-An) per tal
de retenir la biomassa en el digestor. S'ha tractat aigua residual procedent
de la indústria vitivinícola, caracteritzada per un alt contingut en matèria orgànica i pobre en nutrients, avaluant la flexibilitat del BRM-An a oscil•lacions
de càrrega orgànica, així com la seva viabilitat en termes energètics.
Pel que fa a l'aigua residual municipal, la digestió anaeròbia requereix
de post-tractaments d'eliminació
de nutrients. En aquesta tesi, s'han estudiat dos processos d'eliminació
de nitrogen: nitrificació/desnitrificació (N/DN) via nitrit i nitrificació parcial — Anammox (
de l'anglès anaerobic ammonium oxidation). Ambdós possibilitats presenten un estalvi considerable en comparació amb la N/DN convencional. És ben sabut que la N/DN via nitrit suposa una reducció
de les necessitats d'aireig i matèria orgànica. En el present treball s'ha estudiat la integració
de l'eliminació
de nitrogen via nitrit amb la producció
de polihidroxialcanoats (PHA), bioplàstics d'alt interès comercial que s'acumulen a l'interior
de les cèl•lules donades les condicions adients (sacietat — fam).
Tots els estudis s'han portat a terme a escala
de laboratori i s'han obtingut conclusions satisfactòries en al majoria
de casos, arribant a la conclusió que valoritzant la matèria orgànica present en les aigües residuals com una font
de recursos i reduint el cost dels sistemes d'eliminació
de nutrients, les EDAR esdevindran processos molt més sostenibles.
Advisors/Committee Members: false (authoremailshow), Mata Álvarez, Joan (director), Dosta Parras, Joan (director), Mata Álvarez, Joan (tutor), false (authorsendemail).
Subjects/Keywords: Depuració d'aigües residuals; Depuración de aguas residuales; Purification of sewage; Separació per membrana; Separación por membrana; Membrane separation; Eliminació de residus; Eliminación de residuos; Refuse and refuse disposal; Nitrogen; Nitrógeno; Biogàs; Biogás; Biogas; Digestió anaeròbia; Digestión anaerobia; Anaerobic digestion; Ciències Experimentals i Matemàtiques; 66
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Basset Olivé, N. (2015). A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/346348
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Basset Olivé, Núria. “A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment.” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/346348.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Basset Olivé, Núria. “A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment.” 2015. Web. 27 Feb 2021.
Vancouver:
Basset Olivé N. A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment. [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/346348.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Basset Olivé N. A contribution to resource recovery from wastewater. Anaerobic processes for organic matter and nitrogen treatment. [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/346348
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
27.
Carrillo Arregui, Jokin.
Síntesis Total de la Anfidinolida B(2).
Degree: Departament de Química Orgànica, 2015, Universitat de Barcelona
URL: http://hdl.handle.net/10803/346351
► The present Doctoral Thesis describes our efforts towards the Total Synthesis of Amphidinolide B2, a novel macrolide with potent cytotoxicity against lymphoma murine cells and…
(more)
▼ The present Doctoral Thesis describes our efforts towards the Total Synthesis of Amphidinolide B2, a novel macrolide with potent cytotoxicity against lymphoma murine cells and humane carcinoma cells. It is a 26-membered ring macrolactone, with an allylic epoxide, four doble bonds and 9 stereogenic centres. However, the absolute configuration is still unknown as Carter and co-worker sinthetised the proposed structure and observed that the spectroscopic data were not in agreement with those reported by Shimizu. They propose a new structure for Amphidinolide B2, where the two alcohols in C16 and C18 have a syn relative configuration.
Our retrosynthesic analysis was based in four main disconnections that lead to four principal fragments.
The synthesis of Fragment I has been optimized using a methyl ketone asymmetric allylation of ketones developed by Schaus. In this manner, the synthesis of the fragment could be achieved in 3 steps and 32% overall yield.
Fragment II was envisage via an olefination reaction of lactol 1.9. However, this reaction was not trivial and an exhaustive study was carried out. Finally, using Wittig olefination reaction with 0.9 equivalents of ylide or 2.0 equivalents of trifluoroethanol, the product could be obtained.
Negishi reaction has also been studied for the Csp3–Csp2 coupling. After several optimizations, we have been able to synthesize Western Fragment with this protocol. Finally, Jørgensen’s catalytic asymmetric epoxidation allowed us to the formation of the α,β-epoxy aldehyde.
Taking advantage of the Negishi reaction study performed bellow, we decided to focus our attention in the challenging C15–C16 bond formation of Palmerolide A, a melanoma-inhibiting macrolide.
After some studies changing the protecting group, we obtained the coupling product in 78% yield.
Fragment IV is the simplest of all. The synthesis starts from γ-butirolactone and sulfone 6.1 is obtained in 4 steps and 53%. This compound was used for the Julia–Kocienski olefination obtaining 6.3 in moderate yield.
Unfortunately, we haven’t had enough time to continue with the synthesis, which implies a saponification, sterification of Fragment II, ring-closing metathesis to form the macrolactone and the final directed oxi-Michael adition to obtain the C18 stereogenic center.
Advisors/Committee Members: false (authoremailshow), Vilarrasa i Llorens, Jaume (director), Costa i Arnau, Anna M. (director), false (authorsendemail).
Subjects/Keywords: Química orgànica; Química orgánica; Organic chemistry; Síntesi orgànica; Síntesis orgánica; Organic synthesis; Quimioteràpia del càncer; Quimioterapia del cancer; Cancer chemotherapy; Ciències Experimentals i Matemàtiques; 547
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Carrillo Arregui, J. (2015). Síntesis Total de la Anfidinolida B(2). (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/346351
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Carrillo Arregui, Jokin. “Síntesis Total de la Anfidinolida B(2).” 2015. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/346351.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Carrillo Arregui, Jokin. “Síntesis Total de la Anfidinolida B(2).” 2015. Web. 27 Feb 2021.
Vancouver:
Carrillo Arregui J. Síntesis Total de la Anfidinolida B(2). [Internet] [Thesis]. Universitat de Barcelona; 2015. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/346351.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Carrillo Arregui J. Síntesis Total de la Anfidinolida B(2). [Thesis]. Universitat de Barcelona; 2015. Available from: http://hdl.handle.net/10803/346351
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
28.
Díaz Sánchez, Tania.
JAK2 en el linfoma de Hodgkin: Impacto pronóstico de la regulación mediada por miR-135a y análisis in vitro de Lestaurtinib.
Degree: 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/32005
► El linfoma de Hodgkin es una neoplasia de células B caracterizada por la escasa presencia de células tumorales, células de Hodgkin/Reed-Sternberg, localizadas en un microambiente…
(more)
▼ El linfoma
de Hodgkin es una neoplasia
de células B caracterizada por la escasa presencia
de células tumorales, células
de Hodgkin/Reed-Sternberg, localizadas en un microambiente no tumoral. El comportamiento del LH se determina por las características intrínsecas
de las células HRS y por las características
de las células inflamatorias no neoplásicas del microambiente. Por eso, el análisis del papel
pronóstico que juegan los miRNAs en el ganglio completo y no únicamente en las células tumorales adquiere un gran significado.
La vía JAK/STAT es una vía
de señalización utilizada por muchas citoquinas. La activación constitutiva
de esta vía resulta
de gran importancia en la patogénesis del LH. Se han descrito mutaciones puntuales en el gen JAK2 en síndromes mieloproliferativos; sin embargo, estas mutaciones son escasas en el LH, donde el aumento
de la proteína JAK2 se asocia a amplificaciones del gen JAK2, mutaciones en genes reguladores como SOCS-1 o a una activación constitutiva
de las proteínas STAT. Otro posible mecanismo que podría intervenir en la sobreexpresión
de las proteínas JAK2 es la desregulación
de miRNAs cuya función sea controlar la traducción
de JAK2.
La terapia estándar en LH es a base
de antraciclina, con doxorubicina, bleomicina, vinblastina y dacarbacina (ABVD). A pesar
de que el LH está considerado uno
de los cánceres humanos más curable, con tasas
de curación del 80-90%, el tratamiento
de pacientes recaídos o con enfermedad refractaria, especialmente aquellos que recaen después
de un autotrasplante
de células madre, sigue siendo un reto. La FDA (US Food and Drug Administration) no ha aprobado nuevos tratamientos para el LH en los últimos 30 años. Por consiguiente, se necesitan nuevos fármacos, así como nuevas estrategias
de tratamiento basadas en el conocimiento
de la biología del LH y las vías
de señalización implicadas, para mejorar el pronóstico
de los pacientes.
Lestaurtinib (CEP-701) es un inhibidor
de tirosina quinasas con múltiples dianas. En estudios pre-clínicos, se ha demostrado que Lestaurtinib inhibe potentemente a FLT3 en concentraciones nanomolares. Por otra parte, estudios recientes han demostrado que la actividad inhibitoria
de Lestaurtinib no se limita a FLT3 y puede suprimir la señalización
de JAK2/STAT5 mediante la inhibición específica
de JAK2 en SMP; sin embargo la eficiencia
de Lestaurtinib en el LH permanece desconocida, aunque podría ser un fármaco
de interés debido a las vías moleculares que inhibe, como la vía
de JAK2/SAT5 que tan importante es en el LH.
Basándonos en estas hipótesis, nos planteamos los siguientes objetivos:
1. Analizar si el patrón
de expresión
de microRNAs en ganglios linfáticos
de pacientes afectos
de LH tiene implicaciones pronósticas.
2. Determinar las vías a través
de las cuales los miRNAs que actúan como marcadores pronósticos en LH están teniendo un papel clave.
De forma específica:
a. Determinar si JAK2 es un gen diana
de miR-135a.
b. Analizar si miR-135a está jugando un papel como gen supresor
de tumor en el LH.
3.…
Advisors/Committee Members: Universitat de Barcelona. Facultat de Medicina, false (authoremailshow), Navarro Ponz, Alfons (director), false (authorsendemail).
Subjects/Keywords: Hodgkin lymphoma; Linfoma de Hodgkin; Limfoma de Hodgkin; Ciències de la Salut; 616
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Díaz Sánchez, T. (2011). JAK2 en el linfoma de Hodgkin: Impacto pronóstico de la regulación mediada por miR-135a y análisis in vitro de Lestaurtinib. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/32005
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Díaz Sánchez, Tania. “JAK2 en el linfoma de Hodgkin: Impacto pronóstico de la regulación mediada por miR-135a y análisis in vitro de Lestaurtinib.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/32005.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Díaz Sánchez, Tania. “JAK2 en el linfoma de Hodgkin: Impacto pronóstico de la regulación mediada por miR-135a y análisis in vitro de Lestaurtinib.” 2011. Web. 27 Feb 2021.
Vancouver:
Díaz Sánchez T. JAK2 en el linfoma de Hodgkin: Impacto pronóstico de la regulación mediada por miR-135a y análisis in vitro de Lestaurtinib. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/32005.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Díaz Sánchez T. JAK2 en el linfoma de Hodgkin: Impacto pronóstico de la regulación mediada por miR-135a y análisis in vitro de Lestaurtinib. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/32005
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
29.
Masana Nadal, Mercè.
Modulació dels sistemes monoaminèrgics a l’escorça prefrontal. Implicacions en esquizofrènia i depressió.
Degree: Departament de Biologia Cel·lular, Immunologia i Neurociències, 2011, Universitat de Barcelona
URL: http://hdl.handle.net/10803/32019
► Les malalties del cervell representen avui en dia un dels problemes de salut més importants del món desenvolupat, tant pel que fa a malalties neurològiques…
(more)
▼ Les malalties del cervell representen avui en dia un dels problemes
de salut més importants del món desenvolupat, tant pel que fa a malalties neurològiques d’ampli abast, com la malaltia d’Alzheimer, com pel que fa a malalties psiquiàtriques greus, com l’esquizofrènia i la depressió. Els costos socioeconòmics directes (tractaments) i indirectes (baixes laborals, incidència familiar, atenció al malalt, etc.)
de les malalties del cervell a la UE dels 25 pugen fins als 286.000 milions
de € anuals, dels quals gairebé 240.000 milions són deguts a malalties mentals (Andlin-Sobocki et al., 2005). Dins d’aquestes, depressió i esquizofrènia. La prevenció i correcte tractament d’aquestes dues malalties representen avui en dia un dels reptes més importants
de la Neurociència.
Advisors/Committee Members: false (authoremailshow), Artigas Pérez, Francesc (director), Bortolozzi Biasoni, Analia (codirector), false (authorsendemail).
Subjects/Keywords: Escorça cerebral; Corteza cerebral; Cerebral cortex; Ciències de la Salut; 616.8
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Record Details
Similar Records
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Masana Nadal, M. (2011). Modulació dels sistemes monoaminèrgics a l’escorça prefrontal. Implicacions en esquizofrènia i depressió. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/32019
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Masana Nadal, Mercè. “Modulació dels sistemes monoaminèrgics a l’escorça prefrontal. Implicacions en esquizofrènia i depressió.” 2011. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/32019.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Masana Nadal, Mercè. “Modulació dels sistemes monoaminèrgics a l’escorça prefrontal. Implicacions en esquizofrènia i depressió.” 2011. Web. 27 Feb 2021.
Vancouver:
Masana Nadal M. Modulació dels sistemes monoaminèrgics a l’escorça prefrontal. Implicacions en esquizofrènia i depressió. [Internet] [Thesis]. Universitat de Barcelona; 2011. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/32019.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Masana Nadal M. Modulació dels sistemes monoaminèrgics a l’escorça prefrontal. Implicacions en esquizofrènia i depressió. [Thesis]. Universitat de Barcelona; 2011. Available from: http://hdl.handle.net/10803/32019
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universitat de Barcelona
30.
Manzano Jiménez, Claudia Leticia.
Evaluación del impacto de sistemas de gestión ambiental en instituciones de educación superior certificadas con ISO 14001.
Degree: Departament de Psicologia Social i Psicologia Quantitativa, 2017, Universitat de Barcelona
URL: http://hdl.handle.net/10803/461711
► The present research focuses on the relationships between the imposition of patterns of behavior induced by changes linked to the implementation of an EMS and…
(more)
▼ The present research focuses on the relationships between the imposition of patterns of behavior induced by changes linked to the implementation of an EMS and its effect on the organizational and environmental behavior of workers. The analysis was made through the comparison between teachers and non-teachers of Mexican universities certified in ISO 14001 and others without environmental certification. A mixed methodology was used, based on interviews and three scales: Human System Audit
(ASH), Availability to Change Scale (EDC) and Ecological Expressed Behavior Scale (CEE), which measured organizational aspects such as motivation, identification, commitment, job satisfaction and intention of environmental behavior The main findings suggest that, contrary to what the theory tells us about the organizational and behavioral benefits that brings environmental certification; the workers of the educational centers without environmental certification express higher levels of self- efficacy, discrepancy, organizational support and personal gain. They are also identified with environmental activities and participate in their implementation, when ideas and projects originate from the bottom up, without there being a policy or regulation that requires them to do so. Sharing the illusion for an improvement not only immediate but in the medium and long term generates shared involvement and cohesion also in the organization. The analysis and reflection of the results of this research can contribute to the knowledge of processes and disposition of the personnel, as well as in a practical and convenient way to help in the certification process of other organizations.
Advisors/Committee Members: false (authoremailshow), Pol, Enric (director), Yepes i Baldó, Montserrat (director), false (authorsendemail).
Subjects/Keywords: Sistemes de gestió mediambiental; Sistemas de gestión medioambiental; Environmental management systems; Educació superior; Enseñanza superior; Higher education; Universitats; Universidades; Universities; Medi ambient; Medio ambiente; Environment; Ciències de la Salut; 159.9
Record Details
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Share »
Record Details
Similar Records
Cite
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Manzano Jiménez, C. L. (2017). Evaluación del impacto de sistemas de gestión ambiental en instituciones de educación superior certificadas con ISO 14001. (Thesis). Universitat de Barcelona. Retrieved from http://hdl.handle.net/10803/461711
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Manzano Jiménez, Claudia Leticia. “Evaluación del impacto de sistemas de gestión ambiental en instituciones de educación superior certificadas con ISO 14001.” 2017. Thesis, Universitat de Barcelona. Accessed February 27, 2021.
http://hdl.handle.net/10803/461711.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Manzano Jiménez, Claudia Leticia. “Evaluación del impacto de sistemas de gestión ambiental en instituciones de educación superior certificadas con ISO 14001.” 2017. Web. 27 Feb 2021.
Vancouver:
Manzano Jiménez CL. Evaluación del impacto de sistemas de gestión ambiental en instituciones de educación superior certificadas con ISO 14001. [Internet] [Thesis]. Universitat de Barcelona; 2017. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10803/461711.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Manzano Jiménez CL. Evaluación del impacto de sistemas de gestión ambiental en instituciones de educación superior certificadas con ISO 14001. [Thesis]. Universitat de Barcelona; 2017. Available from: http://hdl.handle.net/10803/461711
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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