subject:(Bonding mechanisms)

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University of New South Wales

1. Guenther, Thomas. Miniaturisation of neuroprosthetic implants.

Degree: Graduate School of Biomedical Engineering, 2012, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/52336 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11009/SOURCE01?view=true

► Electrical stimulation of neural tissue is known to elicit sensations and ac-tuations within the human body. Throughout the last decades, the abilityto communicate with neurons… (more)

▼ Electrical stimulation of neural tissue is known to elicit sensations and ac-tuations within the human body. Throughout the last decades, the abilityto communicate with neurons was grown and the process become moresophisticated. Todays matured microprocessor technologies and architec-tures allow complex multi-channel stimulation and recording. However,chronic studies of implanted neuroprosthetics comprising hundreds of stim-ulation channels have never been conducted due to the lack of miniaturisedencapsulation technologies which can be implanted within the smallestspaces while still withstanding the harsh environment for a long-period oftime. In this study, steps towards achieving this goal have been success-fully carried out. Ongoing research was reviewed such that not only thematerials, but also their combinations at the joining interfaces are able towithstand decades of implantation. Metallising alumina with platinum wasof particular interest due to its established presence in neurostimulators forseveral decades. In depth knowledge of the bonding mechanism is essentialto the understanding of this interface because it a_ects the hermeticity andbiocompatibility of the device. Platinum to platinum and titanium to alu-mina interfaces where investigated for structural assembly and long-termstable interconnections. Further studies focused on hermeticity testing ofmicrodevices using helium leak detection. These studies allow to determinepossible methods for non-destructive, case-by-case testing to estimate thetheoretical life-time of each encapsulation. Microfabrication methods weredeveloped and a design for a neurostimulator encapsulation was outlined toallow the implantation into human body where space constraints are highlyrestrictive. An illustrative example of the how the above studies can beapplied was provided by the complete design-to-prototype developmentof a visual prosthesis incorporating 98 stimulation channels. The resultsof testing of the method to miniaturise neuroprosthetic implants indicateadvantages of allowing more complex stimulation methods by providingincreased numbers of stimulation channels, increased life-time of the im-plants, and miniaturisation to target newly accessible implantation sites. Advisors/Committee Members: Ruys, Andrew, Biomedical Engineering, School of Aerospace, Mechanical, and Mechatronic Engineering, Faculty of Engineering, USYD.

Subjects/Keywords: Neuroprosthetic implantss; Microprocessor technology; Bonding mechanisms; Hermeticity; Biocompatibility

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APA (6^th Edition):

Guenther, T. (2012). Miniaturisation of neuroprosthetic implants. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/52336 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11009/SOURCE01?view=true

Chicago Manual of Style (16^th Edition):

Guenther, Thomas. “Miniaturisation of neuroprosthetic implants.” 2012. Doctoral Dissertation, University of New South Wales. Accessed April 10, 2021. http://handle.unsw.edu.au/1959.4/52336 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11009/SOURCE01?view=true.

MLA Handbook (7^th Edition):

Guenther, Thomas. “Miniaturisation of neuroprosthetic implants.” 2012. Web. 10 Apr 2021.

Vancouver:

Guenther T. Miniaturisation of neuroprosthetic implants. [Internet] [Doctoral dissertation]. University of New South Wales; 2012. [cited 2021 Apr 10]. Available from: http://handle.unsw.edu.au/1959.4/52336 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11009/SOURCE01?view=true.

Council of Science Editors:

Guenther T. Miniaturisation of neuroprosthetic implants. [Doctoral Dissertation]. University of New South Wales; 2012. Available from: http://handle.unsw.edu.au/1959.4/52336 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:11009/SOURCE01?view=true

University of Toronto

2. Kwan, Charles. Cyclic Deformation Behaviour and the Related Micro-mechanisms of F.C.C. Metals Processed by Accumulative Roll-bonding.

Degree: 2011, University of Toronto

URL: http://hdl.handle.net/1807/31810

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The improvement in mechanical strength offered by ultra fine- (UF) and nanocrystalline (NC) sized grains is very attractive for potential applications of structural metals. Accumulative… (more)

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The improvement in mechanical strength offered by ultra fine- (UF) and nanocrystalline (NC) sized grains is very attractive for potential applications of structural metals. Accumulative Roll-Bonding (ARB) is one of the promising new techniques for producing bulk UF grained metals. There are numerous reports on the monotonic mechanical behavior of various ARBed metals, however there are few, if any, on the cyclic deformation behavior of such metals. The primary objective of this study is to investigate the cyclic deformation behaviour and the related micro-mechanisms of ARBed metals from a fundamental perspective. To achieve this, the microstructure and the deformation behavior of commercial purity aluminum, OFHC copper, and DLP copper after ARB processing have been systematically characterized. The as-ARBed microstructure is found to be composite natured, with constituents of different grain sizes. The three constituents are: (i)UF grained matrix, (ii)NC primary discontinuities, and (iii)conventional sized pre-existing coarse grains. Due to this composite nature, three different cyclic strain accommodation mechanisms were found in the ARBed OFHC copper: (i)conventional dislocation patterns in the large grains, (ii)reactivation of pre-existing shear bands, and (iii)stress/strain driven grain coarsening at sites of strain localization. The order of activation of the mechanisms can be described with a composite approach based on activation energy. The occurrence of grain coarsening is the major contributor to the cyclic softening response observed in OFHC copper. Conversely, the lesser extent of cyclic softening in the other two metals is likely due to the higher microstructure stability of the initial as-ARBed materials. The microstructure stability is believed to be the primary influencing factor for the extent of grain coarsening and cyclic softening. The applied cyclic plastic strain is a secondary influencing factor, although this is generally overshadowed by the limitation of grain coarsening due to the short cyclic lifespan of these metals. The occurrences of shear banding and grain coarsening reported in the present ARBed metals are similarly reported for UF grained metals from other processes, e.g. ECAPed metals. Thus, its relationship to the cyclic deformation response and governing factors are believed to be applicable for UF grained metals in general.

PhD

Advisors/Committee Members: Wang, Zhirui, Materials Science and Engineering.

Subjects/Keywords: Cyclic Deformation; Ultra-fine grain; Fatigue; Microstructural Mechanisms; Accumulated Roll-Bonding; Mechanical Behaviour; Annealing Characteristics; 0743; 0794

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APA (6^th Edition):

Kwan, C. (2011). Cyclic Deformation Behaviour and the Related Micro-mechanisms of F.C.C. Metals Processed by Accumulative Roll-bonding. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/31810

Chicago Manual of Style (16^th Edition):

Kwan, Charles. “Cyclic Deformation Behaviour and the Related Micro-mechanisms of F.C.C. Metals Processed by Accumulative Roll-bonding.” 2011. Doctoral Dissertation, University of Toronto. Accessed April 10, 2021. http://hdl.handle.net/1807/31810.

MLA Handbook (7^th Edition):

Kwan, Charles. “Cyclic Deformation Behaviour and the Related Micro-mechanisms of F.C.C. Metals Processed by Accumulative Roll-bonding.” 2011. Web. 10 Apr 2021.

Vancouver:

Kwan C. Cyclic Deformation Behaviour and the Related Micro-mechanisms of F.C.C. Metals Processed by Accumulative Roll-bonding. [Internet] [Doctoral dissertation]. University of Toronto; 2011. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/1807/31810.

Council of Science Editors:

Kwan C. Cyclic Deformation Behaviour and the Related Micro-mechanisms of F.C.C. Metals Processed by Accumulative Roll-bonding. [Doctoral Dissertation]. University of Toronto; 2011. Available from: http://hdl.handle.net/1807/31810

3. Waikamp, Vitória. Relação entre traumas na infância, vínculos parentais e estilos defensivos com sintomas psiquiátricos na vida adulta de pacientes em psicoterapia de orientação analítica.

Degree: 2020, Brazil

URL: http://hdl.handle.net/10183/212602

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A relação entre diferentes tipos de trauma na infância, cuidados parentais, estilos de defesas e sintomatologia na idade adulta foi proposta. Compreender a natureza desta… (more)

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A relação entre diferentes tipos de trauma na infância, cuidados parentais, estilos de defesas e sintomatologia na idade adulta foi proposta. Compreender a natureza desta associação é imprescindível para o tratamento de pacientes que buscam atendimento para conflitos relacionados aos traumas precoces. Esta pesquisa objetiva examinar a associação entre o trauma infantil, vínculo parental, estilos defensivos e a sintomatologia atual em pacientes adultos que buscaram atendimento em um ambulatório de psicoterapia de orientação analítica. A amostra foi composta por 197 pacientes em uma clínica de psicoterapia de orientação analítica vinculada a um instituto de formação. Os participantes responderam a quatro instrumentos de autorrelato que avaliaram, respectivamente, a presença e frequência de diversos tipos de traumas precoces, o tipo de vinculação parental, os estilos de defesas e a intensidade da sintomatologia atual, considerando uma ampla variedade de síndromes psicopatológicas. Os resultados obtidos sugerem que apenas 5% dos pacientes relataram não ter vivenciado alguma experiência traumática na infância. Diversos traumas apresentam associação positiva e significativa com várias dimensões de sintomas atuais, assim como os vínculos parentais e os estilos defensivos. A Regressão linear múltipla indicou que os estilos de defesas, quando analisadas conjuntamente com as outras variáveis, explicaram o nível de sofrimento psicológico derivado dos sintomas.

This research aims to examine the association between childhood trauma, parental bonding, defensive styles, and current symptoms in adult patients who sought care at an analytical psychotherapy clinic. The sample consisted of 197 patients in an analytical psychotherapy clinic linked to a training institute. Participants responded to four self-report instruments that assessed, respectively, the presence and frequency of several types of early trauma, the type of parental attachment, the styles of defenses, and the intensity of current symptoms, considering a wide variety of psychopathological syndromes. The results obtained suggest that most patients were exposed to traumatic experiences in childhood and that several traumas have a positive and significant association with various dimensions of current symptoms, as well as parental ties and defensive styles. From the multiple linear regression, it appears that the styles of defenses, when analyzed together with the other variables, explained the level of psychological suffering derived from the symptoms.

Advisors/Committee Members: Freitas, Lucia Helena Machado, Serralta, Fernanda Barcellos.

Subjects/Keywords: Psicoterapia; Psicanálise; Trauma psicológico na infância; Mecanismos de defesa; Psicopatologia; Pais; Poder familiar; Childhood trauma; Defense mechanisms; Parental bonding; Psychopathology

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APA (6^th Edition):

Waikamp, V. (2020). Relação entre traumas na infância, vínculos parentais e estilos defensivos com sintomas psiquiátricos na vida adulta de pacientes em psicoterapia de orientação analítica. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/212602

Chicago Manual of Style (16^th Edition):

Waikamp, Vitória. “Relação entre traumas na infância, vínculos parentais e estilos defensivos com sintomas psiquiátricos na vida adulta de pacientes em psicoterapia de orientação analítica.” 2020. Masters Thesis, Brazil. Accessed April 10, 2021. http://hdl.handle.net/10183/212602.

MLA Handbook (7^th Edition):

Vancouver:

Waikamp V. Relação entre traumas na infância, vínculos parentais e estilos defensivos com sintomas psiquiátricos na vida adulta de pacientes em psicoterapia de orientação analítica. [Internet] [Masters thesis]. Brazil; 2020. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10183/212602.

Council of Science Editors:

Waikamp V. Relação entre traumas na infância, vínculos parentais e estilos defensivos com sintomas psiquiátricos na vida adulta de pacientes em psicoterapia de orientação analítica. [Masters Thesis]. Brazil; 2020. Available from: http://hdl.handle.net/10183/212602

4. Rezai Bidakhavidi, Caminde. Nouvelles solutions de préparation et d'activation des surfaces : assemblages époxy-fonte : New solutions of preparation and activation of surfaces.

Degree: Docteur es, Matériaux, 2017, Bourgogne Franche-Comté

URL: http://www.theses.fr/2017UBFCA021

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Les revêtements organiques déposés en surface de tuyaux en fonte ductile ont pour vocation d’assurer une protection (notamment la résistance chimique, la tenue à la… (more)

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Les revêtements organiques déposés en surface de tuyaux en fonte ductile ont pour vocation d’assurer une protection (notamment la résistance chimique, la tenue à la corrosion) vis-à-vis des effluents agressifs transportés. Pour assurer l’adhérence entre le revêtement (époxy) et son substrat, une préparation de surface est souvent nécessaire. Parmi les procédés conventionnels, le grenaillage est la solution la plus utilisée. Simple à mettre en œuvre et d’efficacité prouvée, il permet d’assurer le décapage de la surface tout en générant une rugosité adaptée. Si la solution est approuvée, des questions subsistent néanmoins quant à l’influence respective de la topographie et de la physico-chimie des surfaces. De plus, encouragées par les nouvelles réglementations environnementales, de nouvelles techniques de préparation de surface se développent.Le travail présenté s’est alors attaché à évaluer l’effet de nouvelles techniques de préparation comme le laser de structuration et le jet d’eau à ultra haute pression à comparer à d’autres procédés conventionnels tels que le brossage et le sablage. Ces nouvelles alternatives vont permettre alors de mieux comprendre l’influence du décapage et de la rugosité de surface avant la mise en peinture.Enfin, les différents résultats obtenus ont été alors spécifiquement analysés pour permettre la compréhension des phénomènes ou mécanismes d’adhésion se produisant à l’interface du couple époxy/substrat, d’un point de vue mécanique et physico-chimique. Divers moyens d’analyses ont alors pu être mis en œuvre pour caractériser les surfaces d’un point de vue morphologique (ratio de surface) et chimique (spectroscopies Raman et photoélectronique à rayons X (XPS)) pour évaluer la tenue interfaciale (test de traction adhérence).

Organic coatings applied on the surface of cast iron pipes ensure very good chemical and anti-corrosion protection against aggressive effluents. To improve adherence between coating (epoxy) and substrate, a surface preparation is required. Among conventional processes shot blasting has emerged as the most efficient and cheapest solution for ensuring stripping while generating adapted roughness. However, as it may enhance both mechanical anchorage and chemical bonding a better understanding of these phenomena should be developed. Besides new eco-friendly alternatives were investigated.Indeed, new techniques were evaluated, i.e. laser structuring and an ultra-high pressure water jet whose major benefits are understanding the effect of ablation and surface roughness prior to applying a coating. Moreover, two other conventional processes (sand blasting and brushing) were introduced to obtain a various roughness.Results obtained were then analyzed to further understand bonding mechanisms at the interface.Several processes were then implemented to evaluate the surface morphology as well as the surface chemistry (spectroscopy Raman and XPS) correlated to the adhesion mechanisms

Advisors/Committee Members: Langlade, Cécile (thesis director), Costil, Sophie (thesis director), Liao, Hanlin (thesis director).

Subjects/Keywords: Traitement de surface; Laser de structuration; Jet d'eau; Revêtement organique; Adhérence; Mécanismes d'adhésion; Surface treatment; Laser structuring; Water jet; Organic coating; Adhesion; Bonding mechanisms; 620.1

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rezai Bidakhavidi, C. (2017). Nouvelles solutions de préparation et d'activation des surfaces : assemblages époxy-fonte : New solutions of preparation and activation of surfaces. (Doctoral Dissertation). Bourgogne Franche-Comté. Retrieved from http://www.theses.fr/2017UBFCA021

Chicago Manual of Style (16^th Edition):

Rezai Bidakhavidi, Caminde. “Nouvelles solutions de préparation et d'activation des surfaces : assemblages époxy-fonte : New solutions of preparation and activation of surfaces.” 2017. Doctoral Dissertation, Bourgogne Franche-Comté. Accessed April 10, 2021. http://www.theses.fr/2017UBFCA021.

MLA Handbook (7^th Edition):

Vancouver:

Rezai Bidakhavidi C. Nouvelles solutions de préparation et d'activation des surfaces : assemblages époxy-fonte : New solutions of preparation and activation of surfaces. [Internet] [Doctoral dissertation]. Bourgogne Franche-Comté; 2017. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2017UBFCA021.

Council of Science Editors:

Rezai Bidakhavidi C. Nouvelles solutions de préparation et d'activation des surfaces : assemblages époxy-fonte : New solutions of preparation and activation of surfaces. [Doctoral Dissertation]. Bourgogne Franche-Comté; 2017. Available from: http://www.theses.fr/2017UBFCA021

Université de Grenoble

5. Argoud, Maxime. Mécanismes de collage et de transfert de films monocristallins dans des structures à couches de polymères : Mechanisms of bonding and single crystalline films transfer in structures with layers of polymers.

Degree: Docteur es, Génie civil, 2012, Université de Grenoble

URL: http://www.theses.fr/2012GRENI083

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Les matériaux polymères sont à l'heure actuelle peu considérés dans le vaste domaine des micro et nano technologies. Ils présentent toutefois certaines propriétés remarquables en… (more)

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Les matériaux polymères sont à l'heure actuelle peu considérés dans le vaste domaine des micro et nano technologies. Ils présentent toutefois certaines propriétés remarquables en comparaison des matériaux traditionnels de la microélectronique. Par exemple leur déformabilité et leur légèreté permettent d'envisager des fonctions de supports flexibles pour des composants électroniques. Par ailleurs, ils offrent des solutions d'assemblage de matériaux de diverses natures. Cette étude porte précisément sur ces deux thématiques. En premier lieu, nous avons étudié les mécanismes de collage impliqués dans l'assemblage de substrats de type silicium par une couche de polymère. D'autre part, nous avons proposé des modèles de mécanisme de transfert de films monocristallins sur polymère. Les propriétés mécaniques des matériaux considérés, principalement du silicium monocristallin et des polymères de type vitreux et caoutchoutique, ainsi que leurs épaisseurs, peuvent varier sur plusieurs ordres de grandeur selon la configuration considérée. L'originalité de l'étude est de déterminer et d'aborder des configurations expérimentalement favorables, par des modèles mécaniques simples, élaborés à partir de lois d'échelle. Nous avons proposé, dans un premier temps, ces modèles pour expliquer des résultats liés à des configurations particulières et ainsi démontrer la pertinence de cette approche. Le cœur de notre étude porte sur le transfert de films monocristallins, aussi fins qu'une centaine de nanomètres d'épaisseur, sur polymère par adaptation du procédé Smart-CutTM (transfert par implantation ionique et fracture). En comparaison d'une configuration standard de cette technologie, nous avons notamment étudié l'impact des propriétés mécaniques propres aux polymères (de types vitreux ou caoutchoutique). Les méthodes en loi d'échelle nous ont ainsi permis de proposer des mécanismes de transfert, de l'échelle du nanomètre jusqu'à la fracture macroscopique. Nous avons également exposé un exemple d'application concret par la réalisation d'objets microélectroniques modèles sur et dans un film monocristallin de silicium. La structure, composée d'un film de quelques micromètres d'épaisseur supporté par un polymère, constitue ainsi une structure flexible d'un point de vue mécanique.

Polymers are little considered at the moment, in the wide domain of micro- and nano- technologies. They present however certain remarkable properties by comparison with the materials used in microelectronics. For example their flexibility and their lightness allow thinking to polymers as flexible supports for microelectronic components. Besides, they offer solutions for assembling various materials.This study concerns exactly these two items. First of all, we studied bonding mechanisms implied in the assembly of silicon wafers via polymer layers. Then we proposed models for mechanism of single-crystalline layer transfers onto polymers. The mechanical properties of the considered materials (mainly single-crystalline silicon and glassy or rubber polymers) as well as…

Advisors/Committee Members: Fretigny, Christian (thesis director), Moriceau, Hubert (thesis director).

Subjects/Keywords: Collage par polymère; Transfert de film monocristallin; Mécanismes de transfert; Substrat flexible; Modèle en lois d'échelle; Polymer bonding; Single crystalline film transfer; Transfer mechanisms; Flexible substrate; Scaling laws mode

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Argoud, M. (2012). Mécanismes de collage et de transfert de films monocristallins dans des structures à couches de polymères : Mechanisms of bonding and single crystalline films transfer in structures with layers of polymers. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2012GRENI083

Chicago Manual of Style (16^th Edition):

Argoud, Maxime. “Mécanismes de collage et de transfert de films monocristallins dans des structures à couches de polymères : Mechanisms of bonding and single crystalline films transfer in structures with layers of polymers.” 2012. Doctoral Dissertation, Université de Grenoble. Accessed April 10, 2021. http://www.theses.fr/2012GRENI083.

MLA Handbook (7^th Edition):

Vancouver:

Argoud M. Mécanismes de collage et de transfert de films monocristallins dans des structures à couches de polymères : Mechanisms of bonding and single crystalline films transfer in structures with layers of polymers. [Internet] [Doctoral dissertation]. Université de Grenoble; 2012. [cited 2021 Apr 10]. Available from: http://www.theses.fr/2012GRENI083.

Council of Science Editors:

Argoud M. Mécanismes de collage et de transfert de films monocristallins dans des structures à couches de polymères : Mechanisms of bonding and single crystalline films transfer in structures with layers of polymers. [Doctoral Dissertation]. Université de Grenoble; 2012. Available from: http://www.theses.fr/2012GRENI083

University of Cincinnati

6. Prevette, Lisa E. DNA Binding Mechanisms and Serum Stabilization of Polymeric Nucleic Acid Delivery Vectors.

Degree: PhD, Arts and Sciences : Chemistry, 2008, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204322885

► Many steps are involved in transfection and must be overcome to provide a successful gene delivery agent: DNA binding/compaction, cellular recognition and uptake, endosomal… (more)

▼ Many steps are involved in transfection and must be overcome to provide a successful gene delivery agent: DNA binding/compaction, cellular recognition and uptake, endosomal escape, trafficking through the cell and eventual release of cargo. All of these potential hurdles are being investigated by the Reineke group using our polymeric vectors, which are composed of carbohydrate and oligoamine monomers; however, the crucial first step to efficient transfection, DNA binding, is an event rarely dissected quantitatively. The purpose of this dissertation research was to carefully elucidate aspects of the mechanism of interaction between our polymers and plasmid DNA (pDNA) through biophysical techniques, such as microcalorimetry, dynamic light scattering, zeta potential, circular dichroism, and FTIR spectroscopy. The combination of these results revealed the significance of the carbohydrate hydroxyl stereochemistry and amide spacing to the DNA affinity, as a result of hydrogen bonding to the backbone and base pairs. As the amine number increased from 1 to 4, the DNA binding mechanism of trehalose-containing polymers became less dependent upon electrostatics and more on hydrogen bonding. This change is a result of decreasing charge fraction with increasing amine density. To determine the necessity of charge-charge interaction between our polycations and nucleic acids, a new series of polymers, replacing the oligoamine with an analogous oligo(ethylene glycol), was synthesized and its characterization compared to the poly(glycoamidoamine)s previously studied. It was shown that removing the electrostatic component prevented DNA binding. Therefore, we conclude that long-range Coulombic attraction initiates the interaction between our polymeric vectors and nucleic acids, but then hydrogen bonding becomes a dominant contributor. Stabilization of our delivery agents to physiological salt and serum conditions is also critical to their clinical use, so another aspect of this thesis project was to conjugate poly(ethylene glycol) to the vectors to provide charge shielding and steric hindrance to thwart aggregation. This stabilization was successfully accomplished with the poly(glycoamidoamine)s using two different formulations and the cell transfection and uptake was monitored with and without cell-targeting moieties. All of these research efforts contribute both to the fundamental knowledge of interaction mechanisms and practical applicability of using these agents for therapeutic delivery of nucleic acids. Advisors/Committee Members: Reineke, Theresa M. (Committee Chair).

Subjects/Keywords: Biophysics; Chemistry; Polymers; DNA; polymers; binding mechanisms; microcalorimetry; gene delivery; secondary structure, hydrogen bonding, electrostatics

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APA (6^th Edition):

Prevette, L. E. (2008). DNA Binding Mechanisms and Serum Stabilization of Polymeric Nucleic Acid Delivery Vectors. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204322885

Chicago Manual of Style (16^th Edition):

Prevette, Lisa E. “DNA Binding Mechanisms and Serum Stabilization of Polymeric Nucleic Acid Delivery Vectors.” 2008. Doctoral Dissertation, University of Cincinnati. Accessed April 10, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204322885.

MLA Handbook (7^th Edition):

Prevette, Lisa E. “DNA Binding Mechanisms and Serum Stabilization of Polymeric Nucleic Acid Delivery Vectors.” 2008. Web. 10 Apr 2021.

Vancouver:

Prevette LE. DNA Binding Mechanisms and Serum Stabilization of Polymeric Nucleic Acid Delivery Vectors. [Internet] [Doctoral dissertation]. University of Cincinnati; 2008. [cited 2021 Apr 10]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204322885.

Council of Science Editors:

Prevette LE. DNA Binding Mechanisms and Serum Stabilization of Polymeric Nucleic Acid Delivery Vectors. [Doctoral Dissertation]. University of Cincinnati; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1204322885

7. Caetano, Luciane Fonseca. Estudo do comportamento da aderência em elementos de concreto armado submetidos à corrosão e elevadas temperaturas.

Degree: 2008, Brazil

URL: http://hdl.handle.net/10183/18395

► O estudo do comportamento de aderência tem recebido grande atenção desde o final da década de 40, entretanto muitas incertezas persistem no que tange à… (more)

▼ O estudo do comportamento de aderência tem recebido grande atenção desde o final da década de 40, entretanto muitas incertezas persistem no que tange à definição do melhor método de ensaio e do desempenho esperado ao longo da vida útil de uma estrutura, especialmente quando a mesma está exposta a condições ambientais desfavoráveis. A corrosão da armadura e a degradação térmica devida à exposição a altas temperaturas são exemplos de situações onde ocorrem importantes modificações nas propriedades dos materiais envolvidos, tendo forte impacto no desempenho da aderência. Tendo em vista que esta é uma propriedade de fundamental importância para a adequada transferência de esforços e compatibilização de deformações entre o concreto e o aço, colaborando para um bom desempenho global da estrutura, o estudo destes efeitos é vital. Este trabalho propõe a elaboração de um modelo matemático que represente o comportamento de aderência de peças submetidas à corrosão de armadura e à exposição a elevadas temperaturas. Além disto, busca realizar uma comparação entre os resultados obtidos por três métodos distintos de ensaios. Para a elaboração do modelo matemático foram produzidos cps de concreto com diferentes resistências à compressão, nos quais foram inseridas barras de aço de distintos diâmetros, para capturar a influência destas variáveis independentes. A modelagem estatística utilizou o modelo cubo-estrela, com definição de 5 níveis de referência para as variáveis temperaturas de exposição (ambiente, 200°C, 400°C, 600°C e 800°C), taxa de corrosão (0, 3, 6, 9 e 12% de perda de massa) e diâmetro da barra (8, 12.5, 16, 20 e 25 mm); e de 3 níveis para a resistência do concreto (25, 45 e 65 MPa). A determinação do comportamento de aderência foi executada através de duas técnicas de ensaio, selecionadas dentre as várias descritas na literatura: o ensaio de arrancamento simples (pull-out test), recomendado pela RILEM (1973), e o ensaio de arrancamento excêntrico (cantilever bond test), proposto por KEMP ET AL (1968). Ambas se caracterizam por serem ensaios de arrancamento, entretanto a primeira apresenta somente tensões de tração e de compressão e a segunda apresenta, além das tensões de tração e compressão, as de cisalhamento e de flexão, gerando uma situação mais próxima do que ocorre em estruturas reais. Para permitir a comparação entre métodos de ensaio com filosofias diferentes, mais uma técnica foi selecionada, o ensaio de viga (beam test), também recomendado pela RILEM (1973). De acordo com a análise dos resultados, o ensaio de arrancamento simples e de viga fornecem, respectivamente, valores de tensão de aderência, cerca de, 70% e 150% superiores aos obtidos em ensaios de arrancamento excêntrico. Os dados indicam, ainda, que os efeitos de deterioração são extremamente importantes para avaliação do desempenho final da aderência. Percebe-se que, para temperaturas mais baixas, até aproximadamente 300°C, a temperatura não provoca alteração no desempenho da aderência, mas, a partir de 550°C, a redução é superior a 50%, para… Advisors/Committee Members: Silva Filho, Luiz Carlos Pinto da.

Subjects/Keywords: Concreto armado; Corrosão; Ensaios (Engenharia); Resistência de aderência; Altas temperaturas; Bonding; Deterioration mechanisms; Corrosion; High temperatures; Test methods

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Caetano, L. F. (2008). Estudo do comportamento da aderência em elementos de concreto armado submetidos à corrosão e elevadas temperaturas. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/18395

Chicago Manual of Style (16^th Edition):

Caetano, Luciane Fonseca. “Estudo do comportamento da aderência em elementos de concreto armado submetidos à corrosão e elevadas temperaturas.” 2008. Masters Thesis, Brazil. Accessed April 10, 2021. http://hdl.handle.net/10183/18395.

MLA Handbook (7^th Edition):

Caetano, Luciane Fonseca. “Estudo do comportamento da aderência em elementos de concreto armado submetidos à corrosão e elevadas temperaturas.” 2008. Web. 10 Apr 2021.

Vancouver:

Caetano LF. Estudo do comportamento da aderência em elementos de concreto armado submetidos à corrosão e elevadas temperaturas. [Internet] [Masters thesis]. Brazil; 2008. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10183/18395.

Council of Science Editors:

Caetano LF. Estudo do comportamento da aderência em elementos de concreto armado submetidos à corrosão e elevadas temperaturas. [Masters Thesis]. Brazil; 2008. Available from: http://hdl.handle.net/10183/18395

York University

8. Changoor, Tina Marissa Rosanna. Indo-Caribbean Immigrants' Well-being: An Intersectional Exploration of the Social Determinants of Health on an Under-studied Population.

Degree: PhD, Kinesiology & Health Science, 2018, York University

URL: http://hdl.handle.net/10315/35501

► There is growing research that is examining the impact of social-economic inequities on peoples health and well-being. While there is an increased focus on the… (more)

▼ There is growing research that is examining the impact of social-economic inequities on peoples health and well-being. While there is an increased focus on the pathways between inequities, and health and well-being, there is a lack of research that specifically addresses how societal power structures cause these inequities and how peoples intersecting social identities are impacted differently by power structures. Health research predominantly focuses on identity variables as being categorical rather than interconnected. However, a categorical and disconnected focus limits the understanding of how peoples lived experiences are impacted by interconnected social and economic inequities. With a social determinants of health (SDOH)-intersectional framework, this qualitative study explored the pathways between Canadian power structures that result in social-economic inequities, and how these inequities impact peoples well-being on the basis of their intersecting identities that include being a first-generation immigrant, a visible minority, and of Indo-Caribbean ethnicity. Examining Indo-Caribbean immigrants settlement experiences with an intersectional lens will both deepen and broaden the understanding of how power structures impact their settlement and well-being experiences. Individual interviews (n = 31) and 2 group interviews (n = 3; n = 2) were thematically analyzed. Themes relating to power-over, power-with and power-within in the context of SDOH were identified. Power-over themes included language challenges, deskilling and survival employment, and perceived discrimination. Gender-specific power-over themes included skilled males work-life imbalance and post-secondary educated males job promotion discrimination. Power-with and power-within themes included settlement support from family and friends. Gender specific power-with and power-within themes included male youths sense of belonging through sport and female mothers sense of independence and accomplishment from work. These findings provide new understanding regarding how nativist power structures result in the dismissal of Indo-Caribbean immigrants cultural capital. Findings also indicate how Indo-Caribbean immigrants utilize power-with and power-within to socially progress in the face of these inequities. This study contributes to a shift from focusing on singular identity factors to simultaneously including intersecting multiple identities when examining inequities and well-being. This shift will contribute to new understandings and will serve to better inform policies that aim to reduce structural barriers. Advisors/Committee Members: Hynie, Michaela (advisor).

Subjects/Keywords: Health sciences; Caribbean; Culture; Indo-Caribbean people; Indo-Caribbean immigrants; Gender; Settlement; Health; Well-being; Intersectionality; Social Determinants of Health; Racism; Equity; Inequity; Inequities; Power; Power-over; Power-with; Power-within; Nativism; Nativist; Newcomer; Immigrants; Integration; Language; Covert racism; Overt racism; Discrimination; Social capital; Cultural capital; Youth; Women; Sport; Cricket; Language accents; Social cohesion; Social support; Apartment; Housing; Climate; Push-factors; Pull-factors; Quality of life; Sense of Belonging; Selective incivility; Sense of independence; Happiness; Bridging capital; Bonding capital; Coping mechanisms; Primary coping; Secondary coping; Trust; Reciprocity; Power model of well-being; Qualitative research; Thematic analysis; Immigration; Social exclusion; Social inclusion; Wellness; Visible minorities; Racialized; De-skilling; Survival employment; Employment; Employment discrimination; Job promotion; Employment equity; Micro-aggression's; Oppression; Empowerment; Under-studied population; Social inequities; Economic inequities; Health research; Social research; Canadian power-structures; First-generation immigrant; Ethnicity; Indo-Caribbean ethnicity; Language challenges; Perceived discrimination; Work-life balance

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Changoor, T. M. R. (2018). Indo-Caribbean Immigrants' Well-being: An Intersectional Exploration of the Social Determinants of Health on an Under-studied Population. (Doctoral Dissertation). York University. Retrieved from http://hdl.handle.net/10315/35501

Chicago Manual of Style (16^th Edition):

Changoor, Tina Marissa Rosanna. “Indo-Caribbean Immigrants' Well-being: An Intersectional Exploration of the Social Determinants of Health on an Under-studied Population.” 2018. Doctoral Dissertation, York University. Accessed April 10, 2021. http://hdl.handle.net/10315/35501.

MLA Handbook (7^th Edition):

Changoor, Tina Marissa Rosanna. “Indo-Caribbean Immigrants' Well-being: An Intersectional Exploration of the Social Determinants of Health on an Under-studied Population.” 2018. Web. 10 Apr 2021.

Vancouver:

Changoor TMR. Indo-Caribbean Immigrants' Well-being: An Intersectional Exploration of the Social Determinants of Health on an Under-studied Population. [Internet] [Doctoral dissertation]. York University; 2018. [cited 2021 Apr 10]. Available from: http://hdl.handle.net/10315/35501.

Council of Science Editors:

Changoor TMR. Indo-Caribbean Immigrants' Well-being: An Intersectional Exploration of the Social Determinants of Health on an Under-studied Population. [Doctoral Dissertation]. York University; 2018. Available from: http://hdl.handle.net/10315/35501

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