subject:(calcium sulfate)

University of Illinois – Urbana-Champaign

1. Maxwell, Elizabeth A. Evaluation of carboplatin-impregnated calcium sulfate hemihydrate beads as a local treatment option for feline injection site-associated sarcomas.

Degree: MS, VMS-Veterinary Clinical Medcne, 2018, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/101244

► Experiment 1: Objective: To determine the in vitro chemosensitivity of feline injection site-associated sarcoma (FISAS) cells to carboplatin concentrations generated by elution of carboplatin-impregnated calcium… (more)

▼ Experiment 1: Objective: To determine the in vitro chemosensitivity of feline injection site-associated sarcoma (FISAS) cells to carboplatin concentrations generated by elution of carboplatin-impregnated calcium sulfate hemihydrate (C-I CSH) beads. Sample: Five immortalized cell lines from histologically confirmed, primary FISASs. Procedures: For each cell line, one 96-well microplate was used for each time point (24, 48, 72 hours). In each microplate, 3 wells were seeded with ~7.5 x 103 cells per well for every carboplatin treatment added, ranging from 5 to 450 µM. Microculture plates were incubated for 24, 48, or 72 hours. Drug efficacy was assessed via a bioreductive fluorometric assay. For apoptosis analysis, 3 wells were seeded with~5 x 104 cells per well for every carboplatin treatment added, ranging from 5 to 450 µM. Flow cytometry was performed and the relative percentages of viable, apoptotic, and late apoptotic/necrotic cells were reported. All experiments were run in triplicates. Results: Carboplatin exerted dose-dependent and time-dependent effects on FISAS cell viability. The IC50 values were within the range of carboplatin concentrations eluted from C-I CSH beads. Conclusion and Clinical Relevance: Elution of carboplatin from C-I CSH beads generate concentrations sufficient to result in 50% growth inhibition of FISAS cells in vitro. Local tumor control might be achieved by implantation of C-I CSH beads immediately following radical or marginal excision of the primary tumor or by implantation without tumor resection. Experiment 2: Objective: To characterize spatial release of platinum from carboplatin-impregnated calcium sulfate hemihydrate (C-I CSH) beads using an agarose tissue phantom. Sample: 3-mm-diameter beads (n = 60) containing 4.6 mg carboplatin (2.4 mg platinum)/bead. Procedures: 18 L of 1% agarose were prepared and poured into 36 containers, each of which was 10 X 10 X 10 cm and filled half full (0.5 L/container). After the agarose solidified, 1, 3, 6, or 10 C-I CSH beads were placed on the agar in defined patterns. An additional 36 blocks of agar (0.5 L/block) were placed atop the beads, positioning the beads in the center of 1 L of agar. The experiment was replicated 3 times for each bead pattern for 24, 48, and 72 hours, respectively. At these times, representative agarose blocks were sectioned in the x-, y-, and z-planes and labeled in accordance with their positions in shells radiating 1, 2, 3, 4, and 5 cm from the center of the blocks. Agarose from each shell was homogenized, and a sample was submitted for platinum analysis by use of inductively coupled plasma-mass spectroscopy. Results: Platinum diffused from C-I CSH beads at predicted anticancer cytotoxic concentrations for 2-5 cm radial source length. Conclusions and Clinical Relevance: Results of this study provided information regarding the spatial distribution of platinum expected to occur in vivo. Agarose may be used as a diffusion model, mimicking the characteristics of subcutaneous tissues.… Advisors/Committee Members: Phillips, Heidi (advisor), Selmic, Laura (committee member), Fan, Tim (committee member).

Subjects/Keywords: carboplatin; calcium sulfate hemihydrate beads; feline

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APA (6^th Edition):

Maxwell, E. A. (2018). Evaluation of carboplatin-impregnated calcium sulfate hemihydrate beads as a local treatment option for feline injection site-associated sarcomas. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/101244

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Maxwell, Elizabeth A. “Evaluation of carboplatin-impregnated calcium sulfate hemihydrate beads as a local treatment option for feline injection site-associated sarcomas.” 2018. Thesis, University of Illinois – Urbana-Champaign. Accessed January 16, 2021. http://hdl.handle.net/2142/101244.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Maxwell, Elizabeth A. “Evaluation of carboplatin-impregnated calcium sulfate hemihydrate beads as a local treatment option for feline injection site-associated sarcomas.” 2018. Web. 16 Jan 2021.

Vancouver:

Maxwell EA. Evaluation of carboplatin-impregnated calcium sulfate hemihydrate beads as a local treatment option for feline injection site-associated sarcomas. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2018. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/2142/101244.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Maxwell EA. Evaluation of carboplatin-impregnated calcium sulfate hemihydrate beads as a local treatment option for feline injection site-associated sarcomas. [Thesis]. University of Illinois – Urbana-Champaign; 2018. Available from: http://hdl.handle.net/2142/101244

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

2. He, Jia. Calcium Sulfate Formation and Mitigation when Seawater was Used to Prepare HCl-Based Acids.

Degree: MS, Petroleum Engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10539

► It has been a practice to use seawater for preparing acid in offshore operations where fresh water is relatively expensive or logistically impossible to use.… (more)

▼ It has been a practice to use seawater for preparing acid in offshore operations where fresh water is relatively expensive or logistically impossible to use. However, hydrochloric acid will release calcium ion into solution, which will combine with sulfate ion in seawater (greater than 3000 ppm) and calcium sulfate will precipitate once it exceeds its critical scaling tendency. A few studies have provided evidence for this problem and how to address this problem has not been fully examined. Core flood tests were conducted using Austin Chalks cores (1.5 in. x 6 in. and 1.5 in. x 20 in.) with permeability 5 md to investigate the effectiveness of scale inhibitor. A synthetic seawater was prepared according to the composition of seawater in the Arabian Gulf. Calcium, sulfate ions, and scale inhibitor concentrations were analyzed in the core effluent samples. Solids collected in the core effluent samples were analyzed using X-ray photoelectron spectroscopy (XPS) technique and thermodynamic calculation using OLI Analyzer software were conducted to identify the critical scaling tendency of calcium sulfate at different temperatures. Results showed that calcium sulfate precipitation occurred when seawater was used in any stage during matrix acidizing including preflush, post-flush, or in the main stage. Injection rate was the most important parameter that affected calcium sulfate precipitation; permeability reduction was significant at low flow rates, while at high rates wormhole breakthrough reduced the severity of the problem. More CaSO4 precipitated at high temperatures, accounting for more significant permeability reduction in the cores. The values of critical scaling tendency at various temperatures calculated by OLI ScaleChem 4.0.3 were believed to be 2.1, 2.0, and 1.2 respectively. A scale inhibitor (a sulfonated terpolymer) was found to be compatible with hydrochloric acid systems and can tolerate high concentration of calcium (30,000 mg/l). Analysis of core effluent indicated that the new treatment successfully eliminated calcium sulfate scale deposition. The concentration of scale inhibitor ranged from 20 to 250 ppm, depending on the scaling tendencies of calcium sulfate. This work confirms the damaging effect of preparing hydrochloric acid solutions using seawater on the permeability of carbonate cores. Therefore, it is recommended to use fresh water instead of seawater to prepare HCl acids whenever possible. If fresh water is not available, then a proper scale inhibitor should be added to the acids to avoid calcium sulfate precipitation. Advisors/Committee Members: Nasr-El-Din, Hisham (advisor), Hill, A. Daniel (committee member), El-Halwagi, Mahmoud (committee member).

Subjects/Keywords: calcium sulfate; scale inhibition; matrix acidizing

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

APA (6^th Edition):

He, J. (2012). Calcium Sulfate Formation and Mitigation when Seawater was Used to Prepare HCl-Based Acids. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10539

Chicago Manual of Style (16^th Edition):

He, Jia. “Calcium Sulfate Formation and Mitigation when Seawater was Used to Prepare HCl-Based Acids.” 2012. Masters Thesis, Texas A&M University. Accessed January 16, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10539.

MLA Handbook (7^th Edition):

He, Jia. “Calcium Sulfate Formation and Mitigation when Seawater was Used to Prepare HCl-Based Acids.” 2012. Web. 16 Jan 2021.

Vancouver:

He J. Calcium Sulfate Formation and Mitigation when Seawater was Used to Prepare HCl-Based Acids. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10539.

Council of Science Editors:

He J. Calcium Sulfate Formation and Mitigation when Seawater was Used to Prepare HCl-Based Acids. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10539

3. Pierre, Alexandre. Rhéologie de suspensions concentrées de sulfate de calcium : Rheology of calciium sulfate suspensions.

Degree: Docteur es, Génie Civil, 2013, Rennes, INSA

URL: http://www.theses.fr/2013ISAR0014

► Ce travail de recherche s’inscrit dans une volonté de développer des suspensions concentrées à application Génie Civil (chapes anhydrites, bétons cirés). Dans ce contexte industriel,… (more)

▼ Ce travail de recherche s’inscrit dans une volonté de développer des suspensions concentrées à application Génie Civil (chapes anhydrites, bétons cirés). Dans ce contexte industriel, l’étude est focalisée sur l’effet de l’introduction d’adjuvants de type polycarboxylate (PCP) sur les propriétés d’écoulement de suspensions formulées avec une anhydrite fortement réactive. Les travaux expérimentaux sont initiés par le développement de protocoles de caractérisation rhéologique étalonné sur un fluide modèle à seuil. Ceci permet d’évaluer l’effet de la taille de l’entrefer, de la rugosité des plateaux, du précisaillement ainsi que du type et de la durée de sollicitation. Nous avons alors défini un protocole unique, exploitable pour identifier la courbe d’écoulement des suspensions concentrées étudiées.. Les propriétés viscoélastiques des suspensions, évaluées aux faibles déformations, sont également caractérisées sous sollicitations oscillantes. Afin d’affiner la connaissance des structures moléculaires des différents adjuvants sélectionnés pour cette étude, des caractérisations physico-chimiques sont réalisées. Elles permettent de distinguer plusieurs paramètres caractéristiques des adjuvants : masse molaire, indice de polymolécularité et sensibilité à la température en fonction d’un milieu alcalin ou neutre. Des mesures d’adsorptions ont également été réalisées sur deux adjuvants. Nous montrons ainsi que le phénomène d’adsorption semble conditionné par les propriétés du milieu, notamment par la présence de chaux. L’étude rhéologique paramétrique montre que des modifications sensibles de la réponse peuvent apparaître en fonction de l’adjuvant utilisé et de la concentration de la suspension. Les évolutions des indicateurs de consistance et de contrainte seuil de mise en écoulement en fonction de la fraction volumique solide et du dosage en adjuvant sont identifiées. Les résultats sont interprétés en ajustant un modèle de type Krieger-Dougherty. L’évolution du paramètre puissance de ce modèle peut être interprétée comme une modification de la forme et de la rugosité du grain couvert par des molécules de PCP adsorbées. Les paramètres moléculaires conditionnant le plus la rhéologie des suspensions concentrées étudiées sont la masse molaire et l’indice de polymolécularité. L’interprétation des résultats est moins tranchée vis-à-vis du seuil de mise en écoulement que vis-à-vis de la consistance. Dès lors, nous avons mis en évidence la relation seuil-consistance. Sur le plan pratique, se restreindre à l’estimation du seuil de mise en écoulement des suspensions devient pertinent. À cette fin, un modèle analytique permettant d’estimer la contrainte seuil de mise en écoulement à partir d’un test d’écoulement libre sur une surface plane est proposé. L’objectif est d’apporter une amélioration aux modèles existants lorsque l’écoulement est à la frontière entre régime d’affaissement et régime d’étalement. L’analyse, qui peut être généralisée à l’étude de tous types de fluides complexes à seuil, conduit à une meilleure évaluation de la… Advisors/Committee Members: Lanos, Christophe (thesis director).

Subjects/Keywords: Rhéologie; Suspensions concentrées; Sulfate de calcium; Superplastifiants; Polycarboxylates; Rheology; Sulfate of calcium; 531.112 4

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APA (6^th Edition):

Pierre, A. (2013). Rhéologie de suspensions concentrées de sulfate de calcium : Rheology of calciium sulfate suspensions. (Doctoral Dissertation). Rennes, INSA. Retrieved from http://www.theses.fr/2013ISAR0014

Chicago Manual of Style (16^th Edition):

Pierre, Alexandre. “Rhéologie de suspensions concentrées de sulfate de calcium : Rheology of calciium sulfate suspensions.” 2013. Doctoral Dissertation, Rennes, INSA. Accessed January 16, 2021. http://www.theses.fr/2013ISAR0014.

MLA Handbook (7^th Edition):

Pierre, Alexandre. “Rhéologie de suspensions concentrées de sulfate de calcium : Rheology of calciium sulfate suspensions.” 2013. Web. 16 Jan 2021.

Vancouver:

Pierre A. Rhéologie de suspensions concentrées de sulfate de calcium : Rheology of calciium sulfate suspensions. [Internet] [Doctoral dissertation]. Rennes, INSA; 2013. [cited 2021 Jan 16]. Available from: http://www.theses.fr/2013ISAR0014.

Council of Science Editors:

Pierre A. Rhéologie de suspensions concentrées de sulfate de calcium : Rheology of calciium sulfate suspensions. [Doctoral Dissertation]. Rennes, INSA; 2013. Available from: http://www.theses.fr/2013ISAR0014

Universidade do Rio Grande do Sul

4. Halfen, Doris Pereira. Adição de fontes de enxofre e cálcio na dieta de gatos adultos e seus efeitos no ph urinário e equilíbrio ácido-básico.

Degree: 2011, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/149324

►

A urolitíase é um problema recorrente na clínica veterinária considerada como causa de morbidade. As urolitíases são estreitamente associadas ao pH urinário e a nutrição… (more)

▼

A urolitíase é um problema recorrente na clínica veterinária considerada como causa de morbidade. As urolitíases são estreitamente associadas ao pH urinário e a nutrição exerce um papel fundamental no controle desta afecção, pois através da manipulação da dieta, pode-se modificar o pH urinário. A dieta possui cátions e ânions na sua composição mineral e a diferença entre íons é medida em miliequivalentes (mEq/kg) e denominado excesso de bases (EB) da dieta, calculado através da equação: (49,9 x Ca) + (82,3 x Mg) + (43,5 x Na) + (25,6 x K) – (64,6 x P) – (62,4 x S) – (28,2 x Cl), sendo a concentração dos elementos em g/kg de MS. A finalidade deste estudo, dividido em dois experimentos, foi avaliar o efeito da adição de fontes de enxofre (S) e cálcio nas dietas de felinos sobre o pH urinário e equilíbrio ácido-básico. A adição de fontes de enxofre objetivou demonstrar a eficácia na acidificação urinária. No primeiro experimento avaliaram-se três diferentes fontes de enxofre: sulfato de cálcio (CaSO4), DL-metionina (DLM) e Metionina hidróxi análoga (MHA) adicionados a uma dieta controle em dois níveis cada um. No tratamento controle não houve adição de acidificantes. No primeiro nível adicionou-se 1,28 g de S/kg e no segundo 2,56 g de S/kg, resultando em sete tratamentos. No segundo experimento duas fontes de cálcio foram avaliadas com o objetivo de pesquisar a eficácia destes sais na alcalinização da urina. No tratamento controle não houve adição de fontes de cálcio. Nos tratamentos 2 e 3 foram adicionados à dieta controle carbonato de cálcio e gluconato de cálcio, respectivamente, nas doses de +160 mEq/kg, resultando em três tratamentos. A urina produzida em cada período de 24 horas teve aferida seu volume, densidade e pH. No segundo experimento foi também medida a excreção urinária de cálcio no período de 72h. O equilíbrio ácido-básico foi avaliado pela hemogasometria de sangue venoso. A DLM no maior nível e o MHA diferiram da dieta controle em relação ao pH urinário (p<0,001) e seu poder acidificante foi maior que o do sulfato de cálcio (p<0,05). As duas fontes de cálcio alcalinizaram a urina, mas o carbonato de cálcio atingiu um pH urinário mais alto que o gluconato de cálcio. Concluiu-se que o efeito diferenciado das fontes de S e cálcio sobre o pH urinário é um indicador de que a participação do cálcio é dependente dos ânions a que está associado, o que leva ao questionamento sobre qual a melhor forma de avaliar sua participação no cálculo do EB.

Urolithiasis is a commom problem in the veterinary clinic considered as a cause of morbidity. The urolithiasis are closely associated with urinary pH and nutrition plays a key role in the control of this disease, because through dietary manipulation, it´s possible modify the urinary pH. The diet has cations and anions in their mineral composition and the difference between ions is measured in milliequivalents (mEq/kg) and called base excess (BE) of the diet, calculated by the equation: (49.9 x Ca) + (82, Mg x 3) + (43.5 x Na) + (25.6 x K) - (64.6 x P) - (62.4 x S) -…

Advisors/Committee Members: Kessler, Alexandre de Mello.

Subjects/Keywords: Methionine; Gato; Calcium carbonate; Nutricao animal; Ph; Urolithiasis; Urina; Calcium sulfate

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

APA (6^th Edition):

Halfen, D. P. (2011). Adição de fontes de enxofre e cálcio na dieta de gatos adultos e seus efeitos no ph urinário e equilíbrio ácido-básico. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/149324

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Halfen, Doris Pereira. “Adição de fontes de enxofre e cálcio na dieta de gatos adultos e seus efeitos no ph urinário e equilíbrio ácido-básico.” 2011. Thesis, Universidade do Rio Grande do Sul. Accessed January 16, 2021. http://hdl.handle.net/10183/149324.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Halfen, Doris Pereira. “Adição de fontes de enxofre e cálcio na dieta de gatos adultos e seus efeitos no ph urinário e equilíbrio ácido-básico.” 2011. Web. 16 Jan 2021.

Vancouver:

Halfen DP. Adição de fontes de enxofre e cálcio na dieta de gatos adultos e seus efeitos no ph urinário e equilíbrio ácido-básico. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2011. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10183/149324.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Halfen DP. Adição de fontes de enxofre e cálcio na dieta de gatos adultos e seus efeitos no ph urinário e equilíbrio ácido-básico. [Thesis]. Universidade do Rio Grande do Sul; 2011. Available from: http://hdl.handle.net/10183/149324

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

5. -2903-5296. External sulfate attack of concrete : an accelerated test method, mechanisms, and mitigation techniques.

Degree: PhD, Civil engineering, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/39727

► Sulfate attack of concrete is perhaps the least understood of the major durability mechanisms plaguing reinforced concrete infrastructures. Many studies have attempted to better understand… (more)

▼ Sulfate attack of concrete is perhaps the least understood of the major durability mechanisms plaguing reinforced concrete infrastructures. Many studies have attempted to better understand the underlying mechanisms in which the various modes of deterioration by sulfate attack manifest; however, several controversies still exist. Moreover, ASTM C 1012 (2012), which is the most commonly referred standardized laboratory test method to determine sulfate resistance of blended portland cement mixtures, does not always link well to field performance and may take up to 18 months to complete. The research program presented in this dissertation investigates various issues pertaining to the mechanisms, testing methods, and factors influencing external sulfate attack. The primary focus of this research study was to investigate and propose a reliable, and innovative accelerated test method to evaluate the sulfate performance using concrete specimens. The research program was divided into the following four key components: (1) design a method that can obtain results within a reasonable timeframe (less than six months); (2) design a method that uses concrete specimens and thus links more closely to field performance; (3) develop a better understanding on the role and mechanisms of sulfate attack on concrete through a comprehensive research program including field and laboratory investigations; and (4) investigate the use of calcium sulfate (gypsum) used as an additive to mitigate the potential of sulfate attack in blended portland cement mixtures using high-calcium fly ash. The findings in this dissertation led to the development of a potential accelerated test method for determining sulfate resistance by vacuum impregnating concrete (or mortar) samples with sulfate solution to accelerate the ingress and onset of chemical reactions between the hydrated cement paste and sulfate ion (SO42-). The effects of binder type, water-to-cementitious ratio (w/cm), curing regime, sulfate type and concentration are examined. In comparison to the conventional ASTM C 1012 method, results showed a higher rate of expansion with significant distress observed in samples subjected to the accelerated test method and placed in a 5% Na2SO4 solution. Similar trends, but at a relatively lower expansion rate, were also observed in samples placed in a 0.89% Na2SO4 solution. Physical measurements, chemical analysis and microstructural studies were performed periodically on the specimens. Advisors/Committee Members: Folliard, Kevin J. (advisor), Thomas, Michael D.A. (advisor), Fowler, David (committee member), Juenger, Maria C.G. (committee member), Wheat, Harovel (committee member).

Subjects/Keywords: Sulfate attack; Sulfate resistance; Sulfate concentration; Ettringite; Gypsum; Expansion; Sodium; Magnesium; Calcium; Accelerated method; XRD; SEM/EDS

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APA (6^th Edition):

-2903-5296. (2016). External sulfate attack of concrete : an accelerated test method, mechanisms, and mitigation techniques. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/39727

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-2903-5296. “External sulfate attack of concrete : an accelerated test method, mechanisms, and mitigation techniques.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed January 16, 2021. http://hdl.handle.net/2152/39727.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-2903-5296. “External sulfate attack of concrete : an accelerated test method, mechanisms, and mitigation techniques.” 2016. Web. 16 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-2903-5296. External sulfate attack of concrete : an accelerated test method, mechanisms, and mitigation techniques. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/2152/39727.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-2903-5296. External sulfate attack of concrete : an accelerated test method, mechanisms, and mitigation techniques. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/39727

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

NSYSU

6. Hung, Pei-Hsuan. Development of oral materials for regenerative applications.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2018, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-021621

► This research studied the development and characterisation of the bioceramic drug delivery cement composed of calcium sulfate dihydrate (CSD), calcium phosphate cement (CPC), simvastatin and… (more)

Subjects/Keywords: Vital pulp therapy; Porous structure; Calcium phosphate cement; Calcium sulfate dihydrate; Drug delivery system

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APA (6^th Edition):

Hung, P. (2018). Development of oral materials for regenerative applications. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-021621

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hung, Pei-Hsuan. “Development of oral materials for regenerative applications.” 2018. Thesis, NSYSU. Accessed January 16, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-021621.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hung, Pei-Hsuan. “Development of oral materials for regenerative applications.” 2018. Web. 16 Jan 2021.

Vancouver:

Hung P. Development of oral materials for regenerative applications. [Internet] [Thesis]. NSYSU; 2018. [cited 2021 Jan 16]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-021621.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hung P. Development of oral materials for regenerative applications. [Thesis]. NSYSU; 2018. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0108118-021621

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toledo Health Science Campus

7. Chalamuri, Shanmuka Harish. The Evaluation of the Effect of Anionic and Cationic Surfactants on the Hindered Settling of Light Calcium Carbonate Suspensions.

Degree: MS, Pharmaceutical Sciences (Industrial Pharmacy), 2014, University of Toledo Health Science Campus

URL: http://rave.ohiolink.edu/etdc/view?acc_num=mco1418602604

► The objective of this study is to evaluate the effect of anionic and cationic surfactants on the hindered settling behavior of simple light calcium carbonate… (more)

Subjects/Keywords: Pharmaceuticals; Pharmacy Sciences; Hindered settling; light calcium carbonate; calcium carbonate; sodium lauryl sulfate; benzalkonium chloride

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APA (6^th Edition):

Chalamuri, S. H. (2014). The Evaluation of the Effect of Anionic and Cationic Surfactants on the Hindered Settling of Light Calcium Carbonate Suspensions. (Masters Thesis). University of Toledo Health Science Campus. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=mco1418602604

Chicago Manual of Style (16^th Edition):

Chalamuri, Shanmuka Harish. “The Evaluation of the Effect of Anionic and Cationic Surfactants on the Hindered Settling of Light Calcium Carbonate Suspensions.” 2014. Masters Thesis, University of Toledo Health Science Campus. Accessed January 16, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=mco1418602604.

MLA Handbook (7^th Edition):

Chalamuri, Shanmuka Harish. “The Evaluation of the Effect of Anionic and Cationic Surfactants on the Hindered Settling of Light Calcium Carbonate Suspensions.” 2014. Web. 16 Jan 2021.

Vancouver:

Chalamuri SH. The Evaluation of the Effect of Anionic and Cationic Surfactants on the Hindered Settling of Light Calcium Carbonate Suspensions. [Internet] [Masters thesis]. University of Toledo Health Science Campus; 2014. [cited 2021 Jan 16]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=mco1418602604.

Council of Science Editors:

Chalamuri SH. The Evaluation of the Effect of Anionic and Cationic Surfactants on the Hindered Settling of Light Calcium Carbonate Suspensions. [Masters Thesis]. University of Toledo Health Science Campus; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=mco1418602604

8. Meddahi, Khalida. Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt.

Degree: 2014, Université M'Hamed Bougara Boumerdès

URL: http://dlibrary.univ-boumerdes.dz:8080123456789/1350

►

74 p. : ill. ; 30 cm

Les inconvénients majeurs de la récupération assistée de pétrole par injection d’eau sont la corrosion et la formation… (more)

Subjects/Keywords: Sulfate de calcium; Pétrole : Récupération secondaire; Gîtes minéraux

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Meddahi, K. (2014). Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt. (Thesis). Université M'Hamed Bougara Boumerdès. Retrieved from http://dlibrary.univ-boumerdes.dz:8080123456789/1350

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Meddahi, Khalida. “Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt.” 2014. Thesis, Université M'Hamed Bougara Boumerdès. Accessed January 16, 2021. http://dlibrary.univ-boumerdes.dz:8080123456789/1350.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Meddahi, Khalida. “Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt.” 2014. Web. 16 Jan 2021.

Vancouver:

Meddahi K. Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt. [Internet] [Thesis]. Université M'Hamed Bougara Boumerdès; 2014. [cited 2021 Jan 16]. Available from: http://dlibrary.univ-boumerdes.dz:8080123456789/1350.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Meddahi K. Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt. [Thesis]. Université M'Hamed Bougara Boumerdès; 2014. Available from: http://dlibrary.univ-boumerdes.dz:8080123456789/1350

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Rio Grande do Sul

9. Ferreira, Cristiano Correa. Formação da eflorescência em cerâmica vermelha : fatores de influência no transporte dos íons SO4 e Ca.

Degree: 2009, Universidade do Rio Grande do Sul

URL: http://hdl.handle.net/10183/24716

► Neste trabalho, investigou-se a migração dos íons SO4 -2 e Ca+2 em uma cerâmica vermelha aditivada com CaSO4.2H2O simulando o processo de eflorescência. Para tanto,… (more)

▼ Neste trabalho, investigou-se a migração dos íons SO4 -2 e Ca+2 em uma cerâmica vermelha aditivada com CaSO4.2H2O simulando o processo de eflorescência. Para tanto, uma massa cerâmica com tendência não patológica, à base de uma argila da região de Gravataí-RS, foi formulada com 0, 4, 8, 12 e 16% em peso de CaSO4.2H2O. No processamento cerâmico, utilizou-se a conformação por extrusão a vácuo e queima em forno elétrico tipo mufla a diferentes temperaturas (800, 850, 900 e 950ºC) com patamar de doze horas. Os corpos cerâmicos obtidos em dimensões de 70x27x9mm3 foram caracterizados quanto às propriedades físicas (absorção de água e porosidade aparente). Para avaliar a mobilidade dos íons SO4 -2 e Ca+2, foram realizados ensaios de eflorescência segundo a norma ASTMC67/2003, análise da distribuição de tamanho de poros nos corpos cerâmicos investigados, ensaios de solubilização durante os períodos de uma hora com os corpos cerâmicos imersos em água a 90°C e imersão dos corpos cerâmicos por sete, quatorze e vinte e oito dias consecutivos em temperatura ambiente. Também foram realizados testes de condutividade elétrica nos solubilizados dos corpos cerâmicos durante os períodos de uma hora e de sete dias de ensaio e avaliou-se a potencialidade desses íons na formação do fenômeno em função das variáveis temperatura e pH. Para a quantificação da eflorescência, foi desenvolvida uma nova metodologia por análise de imagem utilizando o software gráfico Image Tools versão 3.0. Os resultados obtidos permitiram identificar que a nova metodologia baseada em análise de imagens mostrou-se bastante eficiente para quantificar a eflorescência em corpos cerâmicos, diminuindo a subjetividade da avaliação visual. Constatou-se que o íon cálcio possui maior mobilidade do que o íon sulfato após sete dias de repouso. Para maiores tempos de repouso, quatorze e vinte e oito dias, a diferença entre as concentrações por solubilização dos íons Ca+2 e SO4 -2 diminui significativamente. Também foi possível identificar uma tendência (com poucas exceções): os valores da concentração do íon Ca+2 são maiores do que os da concentração de SO4 -2 para um mesmo volume total e diâmetro médio de poros e mesma quantidade de sulfato de cálcio na formulação. Da mesma forma, quando a concentração por solubilização dos íons Ca+2 e SO4 -2 é relacionada à absorção de água dos corpos cerâmicos investigados, e comparando-os com os resultados dos ensaios de eflorescência por imagem, constata-se uma similaridade entre os resultados da eflorescência e da concentração do íon Ca+2 após sete dias de repouso. Já para o íon SO4 -2, os resultados de eflorescência assemelham-se aos de quatorze dias de repouso. A formação da eflorescência está intimamente ligada à porosidade e aos índices de concentração de sal e absorção de água dos corpos cerâmicos. Ao mesmo tempo, os ensaios de solubilização investigados mostraram-se ótimos instrumentos para análise do fenômeno, permitindo, de forma bastante confiável, que se disponha de dados sobre a formação da eflorescência em corpos… Advisors/Committee Members: Bergmann, Carlos Perez.

Subjects/Keywords: Cerâmica vermelha; Efflorescence; Eflorescência; Calcium sulfate; Ceramic materials; Sulfato de cálcio

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ferreira, C. C. (2009). Formação da eflorescência em cerâmica vermelha : fatores de influência no transporte dos íons SO4 e Ca. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/24716

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ferreira, Cristiano Correa. “Formação da eflorescência em cerâmica vermelha : fatores de influência no transporte dos íons SO4 e Ca.” 2009. Thesis, Universidade do Rio Grande do Sul. Accessed January 16, 2021. http://hdl.handle.net/10183/24716.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ferreira, Cristiano Correa. “Formação da eflorescência em cerâmica vermelha : fatores de influência no transporte dos íons SO4 e Ca.” 2009. Web. 16 Jan 2021.

Vancouver:

Ferreira CC. Formação da eflorescência em cerâmica vermelha : fatores de influência no transporte dos íons SO4 e Ca. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2009. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10183/24716.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ferreira CC. Formação da eflorescência em cerâmica vermelha : fatores de influência no transporte dos íons SO4 e Ca. [Thesis]. Universidade do Rio Grande do Sul; 2009. Available from: http://hdl.handle.net/10183/24716

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Meddahi, Khalida. Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt.

Degree: 2014, Université M'Hamed Bougara Boumerdès

URL: http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/1902

► Les inconvénients majeurs de la récupération assistée de pétrole par injection d’eau sont la corrosion et la formation des dépôts qui posent beaucoup de problèmes… (more)

Subjects/Keywords: Sulfate de calcium; Pétrole : Récupération secondaire; Gîtes minéraux

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Meddahi, K. (2014). Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt. (Thesis). Université M'Hamed Bougara Boumerdès. Retrieved from http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/1902

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Meddahi, Khalida. “Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt.” 2014. Thesis, Université M'Hamed Bougara Boumerdès. Accessed January 16, 2021. http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/1902.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Meddahi, Khalida. “Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt.” 2014. Web. 16 Jan 2021.

Vancouver:

Meddahi K. Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt. [Internet] [Thesis]. Université M'Hamed Bougara Boumerdès; 2014. [cited 2021 Jan 16]. Available from: http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/1902.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Meddahi K. Contribution à l’étude de l’incompatibilité entre un inhibiteur de corrosion et un inhibiteur de dépôt. [Thesis]. Université M'Hamed Bougara Boumerdès; 2014. Available from: http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/1902

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Boston University

11. Smith, Conor C. Non-canonical cell signaling actions of pregnenolone sulfate, a neurosteroid that increases intracellular calcium, activates creb phosphorylation and stimulates trafficking of NMDA receptors to the surface of neurons.

Degree: PhD, Pharmacology & Experimental Therapeutics, 2014, Boston University

URL: http://hdl.handle.net/2144/15222

► Preclinical results support the use of N-methyl D-aspartate receptor (NMDAR) modulators for cognition enhancement therapeutics. Pregnenolone sulfate (PregS) is a neuroactive steroid derived from cholesterol… (more)

▼ Preclinical results support the use of N-methyl D-aspartate receptor (NMDAR) modulators for cognition enhancement therapeutics. Pregnenolone sulfate (PregS) is a neuroactive steroid derived from cholesterol that augments long term potentiation (LTP) in hippocampal slices and improves memory performance in rats and mice. At micromolar concentrations, PregS is a subtype selective positive allosteric modulator of NMDARs at NR2A and NR2B containing receptors, and at concentrations ranging from pM - nM induces NMDAR-dependent dopamine release in the striatum and from striatal synaptosomes. In this report, we observe that micromolar [PregS] induces an increase in levels of neuronal intracellular calcium ([Ca²⁺]i) and surface NMDARs in cortical neurons. Moreover, our results show that PregS stimulated upregulation of surface NR1 subunits in cortical neurons is dependent on NMDARs but independent of channel activity. As PregS has been detected in brain at bulk concentrations of 0.1 nM to 5 nM, we asked whether low, picomolar concentrations of PregS might alter [Ca²⁺] levels. We report here that PregS increases [Ca²⁺]i signal in cortical neurons in a voltage-gated Na⁺ channel and NMDAR-NR2B dependent manner with an EC50 of ~2 pM, at least 6 orders of magnitude higher affinity than its rapid potentiating effect upon the NMDAR-mediated ionotropic response, and within the range of PregS detected in bulk brain tissue. Additionally, calcium (Ca²⁺) activation of cyclic AMP response element binding protein (CREB) is critical to the protein synthesis-dependent component of LTP and important in associated behavioral measures of learning and memory. Increased [Ca²⁺]i levels are known to induce CREB activation and we now show that 50 pM PregS induces a 44 ± 13% increase in the ratio of pCREB to total CREB that is dependent upon ERK signaling and canonical excitatory synaptic transmission: this includes voltage gated Na+ channels, NMDARs, and voltage-gated Ca²⁺ channel activation. The results taken together indicate that PregS may be a useful platform for the development of high-affinity positive modulators of NMDAR-signaling that can be used as cognitive enhancers to treat a variety of neurological disorders: such as Alzheimer's disease, Parkinson's disease, and schizophrenia.

Subjects/Keywords: Pharmacology; CREB; NMDA receptor; Calcium; Pregnenolone sulfate; Steroid

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

APA (6^th Edition):

Smith, C. C. (2014). Non-canonical cell signaling actions of pregnenolone sulfate, a neurosteroid that increases intracellular calcium, activates creb phosphorylation and stimulates trafficking of NMDA receptors to the surface of neurons. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/15222

Chicago Manual of Style (16^th Edition):

Smith, Conor C. “Non-canonical cell signaling actions of pregnenolone sulfate, a neurosteroid that increases intracellular calcium, activates creb phosphorylation and stimulates trafficking of NMDA receptors to the surface of neurons.” 2014. Doctoral Dissertation, Boston University. Accessed January 16, 2021. http://hdl.handle.net/2144/15222.

MLA Handbook (7^th Edition):

Smith, Conor C. “Non-canonical cell signaling actions of pregnenolone sulfate, a neurosteroid that increases intracellular calcium, activates creb phosphorylation and stimulates trafficking of NMDA receptors to the surface of neurons.” 2014. Web. 16 Jan 2021.

Vancouver:

Smith CC. Non-canonical cell signaling actions of pregnenolone sulfate, a neurosteroid that increases intracellular calcium, activates creb phosphorylation and stimulates trafficking of NMDA receptors to the surface of neurons. [Internet] [Doctoral dissertation]. Boston University; 2014. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/2144/15222.

Council of Science Editors:

Smith CC. Non-canonical cell signaling actions of pregnenolone sulfate, a neurosteroid that increases intracellular calcium, activates creb phosphorylation and stimulates trafficking of NMDA receptors to the surface of neurons. [Doctoral Dissertation]. Boston University; 2014. Available from: http://hdl.handle.net/2144/15222

12. Lin, Chin Yik. The formation of carbonate minerals in laboratory and environmental settings.

Degree: PhD, 2019, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/293744

► Microbial sulfate reduction, couple to organic matter oxidation or methane oxidation, is one of the key processes driving the formation of sedimentary carbonate minerals. While… (more)

▼ Microbial sulfate reduction, couple to organic matter oxidation or methane oxidation, is one of the key processes driving the formation of sedimentary carbonate minerals. While some work has been done exploring the formation of carbonate minerals via microbial sulfate reduction, less attention has been given to the detailed processes involved in this microbially induced carbonate mineral formation and how the carbonate minerals form may transform and change over time. In this thesis, I investigated the role that microbial sulfate reduction has on the types of calcium carbonate polymorphs precipitated. For this, I grew sulfate-reducing bacteria (Desulfovibrio bizertensis) in media with varying Mg/Ca and different types of seeding materials. My results suggest that sulfate-reducing bacteria induce carbonate precipitation and serve as a nucleation for the growing carbonate minerals. In media where the Mg/Ca is greater than 2, a crystalline monohydrocalcite is the primary carbonate mineral produced. In addition, I examine the role of different seeding materials such as calcite and kaolinite have on the generation of alkalinity and microbial growth in the incubation experiments. My results show higher alkalinity production and rates of sulfate reduction in samples with kaolinite seeds. I suggest this is due to the fact that bacteria grow better in the presence of clay minerals that have a higher surface area. In the final chapter of my thesis, I extend my research from the laboratory setting to the field, in the Norfolk saltmarshes. Using an incubation approach of the saltmarsh sediment allows high-resolution monitoring of the evolution of pore fluid chemistry and thus the stability of siderite in conditions that mimic the saltmarsh. My incubation results suggest that the formation of siderite nodule can be very rapid (within weeks) after burial when there is a substantial iron source. My research thus explores the mineralisation of carbonate through microbial processes and how the diversity of carbonate minerals may be explained and examined in the geological record.

Subjects/Keywords: Alkalinity; calcium carbonate minerals; microbial sulfate reduction; seeding materials

13 more images…

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

APA (6^th Edition):

Lin, C. Y. (2019). The formation of carbonate minerals in laboratory and environmental settings. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/293744

Chicago Manual of Style (16^th Edition):

Lin, Chin Yik. “The formation of carbonate minerals in laboratory and environmental settings.” 2019. Doctoral Dissertation, University of Cambridge. Accessed January 16, 2021. https://www.repository.cam.ac.uk/handle/1810/293744.

MLA Handbook (7^th Edition):

Lin, Chin Yik. “The formation of carbonate minerals in laboratory and environmental settings.” 2019. Web. 16 Jan 2021.

Vancouver:

Lin CY. The formation of carbonate minerals in laboratory and environmental settings. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Jan 16]. Available from: https://www.repository.cam.ac.uk/handle/1810/293744.

Council of Science Editors:

Lin CY. The formation of carbonate minerals in laboratory and environmental settings. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://www.repository.cam.ac.uk/handle/1810/293744

Louisiana State University

13. Bertrand, Sarah E. A comparison of calcium and magnesium ratios in soilless media for optimum vegetable production irrigated with alkaline pH water.

Degree: MS, 2014, Louisiana State University

URL: etd-04082014-091530 ; https://digitalcommons.lsu.edu/gradschool_theses/758

► Home gardeners in areas with alkaline water sources do not have means of acidifying water for vegetable production. A solution to achieving optimal yields with… (more)

Subjects/Keywords: vegetable; pH; alkalinity; media; dolomitic lime; calcium carbonate; magnesium sulfate

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

APA (6^th Edition):

Bertrand, S. E. (2014). A comparison of calcium and magnesium ratios in soilless media for optimum vegetable production irrigated with alkaline pH water. (Masters Thesis). Louisiana State University. Retrieved from etd-04082014-091530 ; https://digitalcommons.lsu.edu/gradschool_theses/758

Chicago Manual of Style (16^th Edition):

Bertrand, Sarah E. “A comparison of calcium and magnesium ratios in soilless media for optimum vegetable production irrigated with alkaline pH water.” 2014. Masters Thesis, Louisiana State University. Accessed January 16, 2021. etd-04082014-091530 ; https://digitalcommons.lsu.edu/gradschool_theses/758.

MLA Handbook (7^th Edition):

Bertrand, Sarah E. “A comparison of calcium and magnesium ratios in soilless media for optimum vegetable production irrigated with alkaline pH water.” 2014. Web. 16 Jan 2021.

Vancouver:

Bertrand SE. A comparison of calcium and magnesium ratios in soilless media for optimum vegetable production irrigated with alkaline pH water. [Internet] [Masters thesis]. Louisiana State University; 2014. [cited 2021 Jan 16]. Available from: etd-04082014-091530 ; https://digitalcommons.lsu.edu/gradschool_theses/758.

Council of Science Editors:

Bertrand SE. A comparison of calcium and magnesium ratios in soilless media for optimum vegetable production irrigated with alkaline pH water. [Masters Thesis]. Louisiana State University; 2014. Available from: etd-04082014-091530 ; https://digitalcommons.lsu.edu/gradschool_theses/758

University of Kentucky

14. Brown, Matthew E. DEVELOPMENT OF A MOLDABLE COMPOSITE BONE GRAFT SUBSTITUTE RELEASING ANTIBACTERIAL AND OSTEOGENIC DRUGS.

Degree: 2014, University of Kentucky

URL: https://uknowledge.uky.edu/cbme_etds/17

► Large infected bone defects (IBD) are very complicated to treat due to their high variability; they often require multiple procedures. Bone autografts are the gold… (more)

▼ Large infected bone defects (IBD) are very complicated to treat due to their high variability; they often require multiple procedures. Bone autografts are the gold standard for treatment but have several drawbacks, such as a need for a second surgery site, limited grafting material, and donor site morbidity. The objective of this research was to develop a moldable synthetic bone grafting material capable of releasing both antimicrobial and osteogenic drugs over a clinically relevant time course for the treatment of IBDs. Current treatment methods for large IBDs require two separate procedures to treat the bone defect and the infection. This research sought to combine these two procedures into one implantable composite bone graft substitute for the treatment IBDs. To begin, the degradation and mechanical properties of the calcium sulfate (CS) based composite material were evaluated for different compositions. Next, the controlled drug release profiles from the composite was achieved by using a shell and core system incorporating poly(lactic-co-glycolic acid) microspheres (PLGAms). The release of vancomycin from the shell began immediately and continued over the course of 6 weeks, while the release of simvastatin from the core was delayed before being released over 4 weeks. Next, an infected, critically-sized rat femoral defect model was used to test different treatment methods with and without the composite bone graft substitute. Animals treated with locally released antibiotics had survivorship rates 24% higher than those treated with systemic antibiotics, and animals that received both antibiotics and an osteogenic drug had an increased amount of bone formation at 12 weeks compared to controls. Finally, several different anti-biofilm agents were evaluated for their ability to inhibit and/or disrupt the growth of Staphylococcus aureus (S. aureus) biofilms in vitro. Lysostaphin was the only drug investigated that was able to both inhibit and disrupt S. aureus biofilms. Furthermore, lysostaphin encapsulated into PLGAms maintained its bioactivity and may be useful for future incorporation into biofilm-combating materials. The bone grafting material developed here can be used to locally deliver drugs in a temporally controlled manner to reduce the number of procedures necessary for the treatment of complex IBDs.

Subjects/Keywords: Biofilms; bone graft substitute; calcium sulfate; composite; sequential release.; Biomaterials

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❌

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

APA (6^th Edition):

Brown, M. E. (2014). DEVELOPMENT OF A MOLDABLE COMPOSITE BONE GRAFT SUBSTITUTE RELEASING ANTIBACTERIAL AND OSTEOGENIC DRUGS. (Doctoral Dissertation). University of Kentucky. Retrieved from https://uknowledge.uky.edu/cbme_etds/17

Chicago Manual of Style (16^th Edition):

Brown, Matthew E. “DEVELOPMENT OF A MOLDABLE COMPOSITE BONE GRAFT SUBSTITUTE RELEASING ANTIBACTERIAL AND OSTEOGENIC DRUGS.” 2014. Doctoral Dissertation, University of Kentucky. Accessed January 16, 2021. https://uknowledge.uky.edu/cbme_etds/17.

MLA Handbook (7^th Edition):

Brown, Matthew E. “DEVELOPMENT OF A MOLDABLE COMPOSITE BONE GRAFT SUBSTITUTE RELEASING ANTIBACTERIAL AND OSTEOGENIC DRUGS.” 2014. Web. 16 Jan 2021.

Vancouver:

Brown ME. DEVELOPMENT OF A MOLDABLE COMPOSITE BONE GRAFT SUBSTITUTE RELEASING ANTIBACTERIAL AND OSTEOGENIC DRUGS. [Internet] [Doctoral dissertation]. University of Kentucky; 2014. [cited 2021 Jan 16]. Available from: https://uknowledge.uky.edu/cbme_etds/17.

Council of Science Editors:

Brown ME. DEVELOPMENT OF A MOLDABLE COMPOSITE BONE GRAFT SUBSTITUTE RELEASING ANTIBACTERIAL AND OSTEOGENIC DRUGS. [Doctoral Dissertation]. University of Kentucky; 2014. Available from: https://uknowledge.uky.edu/cbme_etds/17

University of Cambridge

15. Lin, Chin Yik. The formation of carbonate minerals in laboratory and environmental settings.

Degree: PhD, 2019, University of Cambridge

URL: https://doi.org/10.17863/CAM.40858 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.782845

► Microbial sulfate reduction, couple to organic matter oxidation or methane oxidation, is one of the key processes driving the formation of sedimentary carbonate minerals. While… (more)

▼ Microbial sulfate reduction, couple to organic matter oxidation or methane oxidation, is one of the key processes driving the formation of sedimentary carbonate minerals. While some work has been done exploring the formation of carbonate minerals via microbial sulfate reduction, less attention has been given to the detailed processes involved in this microbially induced carbonate mineral formation and how the carbonate minerals form may transform and change over time. In this thesis, I investigated the role that microbial sulfate reduction has on the types of calcium carbonate polymorphs precipitated. For this, I grew sulfate-reducing bacteria (Desulfovibrio bizertensis) in media with varying Mg/Ca and different types of seeding materials. My results suggest that sulfate-reducing bacteria induce carbonate precipitation and serve as a nucleation for the growing carbonate minerals. In media where the Mg/Ca is greater than 2, a crystalline monohydrocalcite is the primary carbonate mineral produced. In addition, I examine the role of different seeding materials such as calcite and kaolinite have on the generation of alkalinity and microbial growth in the incubation experiments. My results show higher alkalinity production and rates of sulfate reduction in samples with kaolinite seeds. I suggest this is due to the fact that bacteria grow better in the presence of clay minerals that have a higher surface area. In the final chapter of my thesis, I extend my research from the laboratory setting to the field, in the Norfolk saltmarshes. Using an incubation approach of the saltmarsh sediment allows high-resolution monitoring of the evolution of pore fluid chemistry and thus the stability of siderite in conditions that mimic the saltmarsh. My incubation results suggest that the formation of siderite nodule can be very rapid (within weeks) after burial when there is a substantial iron source. My research thus explores the mineralisation of carbonate through microbial processes and how the diversity of carbonate minerals may be explained and examined in the geological record.

Subjects/Keywords: Alkalinity; calcium carbonate minerals; microbial sulfate reduction; seeding materials

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Lin, C. Y. (2019). The formation of carbonate minerals in laboratory and environmental settings. (Doctoral Dissertation). University of Cambridge. Retrieved from https://doi.org/10.17863/CAM.40858 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.782845

Chicago Manual of Style (16^th Edition):

Lin, Chin Yik. “The formation of carbonate minerals in laboratory and environmental settings.” 2019. Doctoral Dissertation, University of Cambridge. Accessed January 16, 2021. https://doi.org/10.17863/CAM.40858 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.782845.

MLA Handbook (7^th Edition):

Lin, Chin Yik. “The formation of carbonate minerals in laboratory and environmental settings.” 2019. Web. 16 Jan 2021.

Vancouver:

Lin CY. The formation of carbonate minerals in laboratory and environmental settings. [Internet] [Doctoral dissertation]. University of Cambridge; 2019. [cited 2021 Jan 16]. Available from: https://doi.org/10.17863/CAM.40858 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.782845.

Council of Science Editors:

Lin CY. The formation of carbonate minerals in laboratory and environmental settings. [Doctoral Dissertation]. University of Cambridge; 2019. Available from: https://doi.org/10.17863/CAM.40858 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.782845

Western Washington University

16. Dixon, Darian. Visible-to-Near-Infrared Spectral Variability of Hydrated Sulfates and Candidate Mars Landing Sites: Implications for the Mastcam-Z Investigation on NASA’s Mars-2020 Rover Mission.

Degree: MS, Geology, 2018, Western Washington University

URL: https://doi.org/10.25710/b0px-y176 ; https://cedar.wwu.edu/wwuet/638

► The Mars-2020 rover mission will explore an astrobiologically relevant ancient environment on Mars, establish geologic context of the region, assess past habitability, and cache… (more)

▼ The Mars-2020 rover mission will explore an astrobiologically relevant ancient environment on Mars, establish geologic context of the region, assess past habitability, and cache rocks for a future sample return. The Mastcam-Z instrument is a stereoscopic, zoom-enabled multispectral imager that will be critical to these objectives. As one of the mission’s primary reconnaissance tools, Mastcam-Z’s two cameras will acquire red-green-blue (RGB) true-color images and visible-to-near-infrared (VNIR) images with 11 narrowband filters from ~400-1100 nm. Mastcam-Z’s new ~975 nm spectral filter will help characterize the ~950-1000 nm absorption band in hydrated minerals, which has not been resolvable by previous rover multispectral imagers. We hypothesize that this filter will allow Mastcam-Z to better characterize VNIR hydration bands in hydrated sulfates, although mineral mixtures, iron-oxide dust contamination, and varying grain size will affect band depths. At the time of this writing, three candidate landing sites are being considered for the Mars-2020 mission, each bearing mineralogical units extensively investigated by high-resolution orbital SWIR (short-wave-infrared) imagery. We also hypothesize that Mastcam-Z VNIR spectral parameters can distinguish the prominent geologic units characterized by orbital SWIR at each landing site, although iron-oxide dust distribution is the suspected primary control on VNIR spectral variability on Mars. Synthetic magnesium and calcium sulfate samples were measured with a laboratory spectrometer and acquired spectra were convolved to expected Mastcam-Z resolution to identify the spectral filter combinations most sensitive to signatures of hydration. Sulfate samples were subject to bimodal mineral mixing, grain size separation, and contamination with a martian dust simulant to quantify the spectral effects these properties have on the ~950-1000 nm hydration band. SWIR imagery from the Mars 2020 candidate landing sites were also convolved to expected Mastcam-Z resolution. Spectral parameters were then developed at expected Mastcam-Z resolution that would corroborate mineral detections made by extensively-tested SWIR spectral parameters and SWIR spectra of prominent units. Mastcam-Z-simulated hydrated sulfate spectra reveal that Mastcam-Z can detect hydration in bimodal mixtures of hydrated Mg-sulfates but bimodal mixtures Ca-sulfates may present challenge unless significantly gypsum-rich. Iron-oxide dust contamination significantly shallows the ~950-1000 nm hydration band in hydrated sulfates, whereas band depth generally increases with increasing grain size. Mastcam-Z-simulated orbital imagery reveals distinct Mastcam-Z VNIR spectral parameters distinguishing prominent geologic units for each landing site, although modified versions of Pancam parameters are recommended for the Columbia Hills. Seasonal changes in spectral variability at the Columbia Hills and regional variation in spectral parameter effectiveness at NE Syrtis indicate VNIR spectral properties on Mars are likely… Advisors/Committee Members: Rice, Melissa S., Stelling, Peter L., Kraft, Michael E..

Subjects/Keywords: Geology; Multispectral imaging; Calcium sulfate; Magnesium sulfate; Spectral sensitivity; Mars landing sites; Mars (Planet) – Spectra; Mars (Planet); masters theses

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APA (6^th Edition):

Dixon, D. (2018). Visible-to-Near-Infrared Spectral Variability of Hydrated Sulfates and Candidate Mars Landing Sites: Implications for the Mastcam-Z Investigation on NASA’s Mars-2020 Rover Mission. (Masters Thesis). Western Washington University. Retrieved from https://doi.org/10.25710/b0px-y176 ; https://cedar.wwu.edu/wwuet/638

Chicago Manual of Style (16^th Edition):

Dixon, Darian. “Visible-to-Near-Infrared Spectral Variability of Hydrated Sulfates and Candidate Mars Landing Sites: Implications for the Mastcam-Z Investigation on NASA’s Mars-2020 Rover Mission.” 2018. Masters Thesis, Western Washington University. Accessed January 16, 2021. https://doi.org/10.25710/b0px-y176 ; https://cedar.wwu.edu/wwuet/638.

MLA Handbook (7^th Edition):

Dixon, Darian. “Visible-to-Near-Infrared Spectral Variability of Hydrated Sulfates and Candidate Mars Landing Sites: Implications for the Mastcam-Z Investigation on NASA’s Mars-2020 Rover Mission.” 2018. Web. 16 Jan 2021.

Vancouver:

Dixon D. Visible-to-Near-Infrared Spectral Variability of Hydrated Sulfates and Candidate Mars Landing Sites: Implications for the Mastcam-Z Investigation on NASA’s Mars-2020 Rover Mission. [Internet] [Masters thesis]. Western Washington University; 2018. [cited 2021 Jan 16]. Available from: https://doi.org/10.25710/b0px-y176 ; https://cedar.wwu.edu/wwuet/638.

Council of Science Editors:

Dixon D. Visible-to-Near-Infrared Spectral Variability of Hydrated Sulfates and Candidate Mars Landing Sites: Implications for the Mastcam-Z Investigation on NASA’s Mars-2020 Rover Mission. [Masters Thesis]. Western Washington University; 2018. Available from: https://doi.org/10.25710/b0px-y176 ; https://cedar.wwu.edu/wwuet/638

17. Nguyen, Ngoc Lam. Étude de la microstructure des liants ettringitiques influence sur les propriétés macroscopiques : Résistance et variation dimensionnelle : Study of ettringite binder microstructure on the macrostructural properties : Resistance and dimensional change.

Degree: Docteur es, Génie civil, 2015, INSA Lyon

URL: http://www.theses.fr/2015ISAL0006

►

Les liants ettringitiques dont la composition est formée principalement par du ciment d’aluminate de calcium et par du sulfate de calcium, sont très utilisés dans… (more)

▼

Les liants ettringitiques dont la composition est formée principalement par du ciment d’aluminate de calcium et par du sulfate de calcium, sont très utilisés dans le cadre des mortiers techniques pour des applications telles que les mortiers de ragréage, les chapes autonivelante, les mortiers de réparation…. en raison de leurs propriétés de durcissement rapide et de résistance initiale élevée. Néanmoins, en fonction de la quantité des matières premières utilisées dans la composition et de leur nature, ces liants peuvent présenter à jeune âge ainsi qu’à long terme, des comportements différents. En particulier et dans le cadre de ce travail, l’influence de la nature et du dosage en sulfate de calcium sur l’hydratation des mortiers ettringitiques comme le début de prise, le changement de l’état liquide à l’état solide, les variations dimensionnelles, la résistance et le vieillissement à long terme (jusqu’à 330 jours) pour différentes conditions de conservations ont été déterminées. Ces caractéristiques ont été évaluées selon différentes techniques expérimentales de rhéologie, de mesure des variations volumiques, de calorimétrie isotherme, de spectroscopie infrarouge, de porosimétrie par intrusion de mercure, de diffraction des rayons X et thermogravimétrie.

The ettringite binder whose composition is mainly formed by the calcium aluminate cement and calcium sulfate, are widely used in mortars for technical applications such as patching mortars, the self -leveling screeds, repair mortars etc… thanks to their fast hardening ability and high early strength. However, depending on the amount and types of raw materials used in the composition, the properties of these types of binder have different behaviors at early age and at long-term. And in particular in this work, the influence of the nature and dosage of calcium sulfate on the consequences of ettringite mortars hydration as the beginning of setting time, the change from the liquid state to the solid state, dimensional change, the resistance, porosity, the progress of hydration and ageing until 330 days at different conservation conditions were determined. These characteristics were assessed by different experimental techniques such as rheology, chemical shrinkage, autogenous shrinkage, isothermal calorimetry, infrared spectroscopy, mercury intrusion porosimetry, X-ray diffraction, Thermogravimetric analysis.

Advisors/Committee Members: Georgin, Jean-François (thesis director), Prud'homme, Elodie (thesis director).

Subjects/Keywords: Matériaux; Microstructure du matériau; Ettringite; Mortier; Ciment alumineux; Hydratation; Résistance; Variation dimensionnellle; Sulfate de calcium; Materials; Microstructure; Ettringite; Mortar; Aluminous cement; Hydratation; Resistance; Dimensional change; Calcium sulfate; 620.135 072

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APA (6^th Edition):

Nguyen, N. L. (2015). Étude de la microstructure des liants ettringitiques influence sur les propriétés macroscopiques : Résistance et variation dimensionnelle : Study of ettringite binder microstructure on the macrostructural properties : Resistance and dimensional change. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2015ISAL0006

Chicago Manual of Style (16^th Edition):

Nguyen, Ngoc Lam. “Étude de la microstructure des liants ettringitiques influence sur les propriétés macroscopiques : Résistance et variation dimensionnelle : Study of ettringite binder microstructure on the macrostructural properties : Resistance and dimensional change.” 2015. Doctoral Dissertation, INSA Lyon. Accessed January 16, 2021. http://www.theses.fr/2015ISAL0006.

MLA Handbook (7^th Edition):

Nguyen, Ngoc Lam. “Étude de la microstructure des liants ettringitiques influence sur les propriétés macroscopiques : Résistance et variation dimensionnelle : Study of ettringite binder microstructure on the macrostructural properties : Resistance and dimensional change.” 2015. Web. 16 Jan 2021.

Vancouver:

Nguyen NL. Étude de la microstructure des liants ettringitiques influence sur les propriétés macroscopiques : Résistance et variation dimensionnelle : Study of ettringite binder microstructure on the macrostructural properties : Resistance and dimensional change. [Internet] [Doctoral dissertation]. INSA Lyon; 2015. [cited 2021 Jan 16]. Available from: http://www.theses.fr/2015ISAL0006.

Council of Science Editors:

Nguyen NL. Étude de la microstructure des liants ettringitiques influence sur les propriétés macroscopiques : Résistance et variation dimensionnelle : Study of ettringite binder microstructure on the macrostructural properties : Resistance and dimensional change. [Doctoral Dissertation]. INSA Lyon; 2015. Available from: http://www.theses.fr/2015ISAL0006

18. Coneglian, Patrícia Zanatta Aranha. Avaliação do processo evolutivo de reparo ósseo frente ao sulfato de cálcio e à hidroxiapatita. Estudo microscópico em alvéolos dentários de ratos.

Degree: Mestrado, Endodontia, 2007, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/25/25138/tde-04092007-111139/ ;

►

A evolução do processo de reparo ósseo foi avaliada, em alvéolos dentários de ratos, frente ao coágulo sangüíneo, bem como ao implante de sulfato de… (more)

▼

A evolução do processo de reparo ósseo foi avaliada, em alvéolos dentários de ratos, frente ao coágulo sangüíneo, bem como ao implante de sulfato de cálcio di-hidratado e da hidroxiapatita BTCP GenPhos. Foram utilizados 48 ratos machos, divididos em três grupos, nos quais foi realizada a extração do incisivo superior direito. No grupo I, os alvéolos foram preenchidos com coágulo sangüíneo, permanecendo dessa forma como controle. No grupo II, implantou-se no alvéolo sulfato de cálcio di-hidratado e, no grupo III, realizou-se a inserção da hidroxiapatita BTCP GenPhos nos alvéolos. Após 7, 15 e 30 dias dos procedimentos cirúrgicos, os animais foram mortos, as hemimaxilas direitas removidas e processadas histologicamente para a realização das análises microscópicas descritiva e quantitativa, cujos resultados foram submetidos aos testes estatísticos de Kruskal-Wallis e Dunn. Foi possível concluir que o processo de reparo alveolar, aos 7, 15 e 30 dias, ocorreu de forma semelhante entre os grupos do coágulo sangüíneo, do sulfato de cálcio di-hidratado e da hidroxiapatita BTCP GenPhos, destacando-se a diferença significativa quanto à neoformação óssea, aos 15 dias, entre os grupos controle e hidroxiapatita BTCP GenPhos; e que, aos 30 dias, a evolução da neoformação óssea foi igual para todos os grupos analisados.

The evolution of bone repair was evaluated in tooth sockets of rats filled with blood clot as well as after placement of calcium sulfate dihydrate implant and hydroxyapatite BTCP GenPhos. The study sample was composed of 48 males rats divided into three groups, which were submitted to extraction of the right maxillary incisor. In group I, the sockets were filled with blood clot and were kept as such as control. Group II received a calcium sulfate dihydrate implant, and group III was submitted to placement of hydroxyapatite BTCP GenPhos in the sockets. At 7, 15 and 30 days after surgery, the animals were killed, the right hemimaxillae were removed and histologically processed for descriptive and quantitative microscopic analysis, whose results were statistically analyzed by the Kruskal-Wallis and Dunn tests. It was concluded that the alveolar repair process at 7, 15 and 30 days was similar for sockets filled with blood clot, calcium sulfate dihydrate and hydroxyapatite BTCP GenPhos, with emphasis to the significant difference with regard to new bone formation at 15 days between the control and hydroxyapatite BTCP GenPhos groups; and, at 30 days, the evolution of new bone formation was similar for all study groups

Advisors/Committee Members: Garcia, Roberto Brandão.

Subjects/Keywords: alvéolo dental; bone substitutes; calcium sulfate; substitutos ósseos; sulfato de cálcio; tooth socket

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

APA (6^th Edition):

Coneglian, P. Z. A. (2007). Avaliação do processo evolutivo de reparo ósseo frente ao sulfato de cálcio e à hidroxiapatita. Estudo microscópico em alvéolos dentários de ratos. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/25/25138/tde-04092007-111139/ ;

Chicago Manual of Style (16^th Edition):

Coneglian, Patrícia Zanatta Aranha. “Avaliação do processo evolutivo de reparo ósseo frente ao sulfato de cálcio e à hidroxiapatita. Estudo microscópico em alvéolos dentários de ratos.” 2007. Masters Thesis, University of São Paulo. Accessed January 16, 2021. http://www.teses.usp.br/teses/disponiveis/25/25138/tde-04092007-111139/ ;.

MLA Handbook (7^th Edition):

Coneglian, Patrícia Zanatta Aranha. “Avaliação do processo evolutivo de reparo ósseo frente ao sulfato de cálcio e à hidroxiapatita. Estudo microscópico em alvéolos dentários de ratos.” 2007. Web. 16 Jan 2021.

Vancouver:

Coneglian PZA. Avaliação do processo evolutivo de reparo ósseo frente ao sulfato de cálcio e à hidroxiapatita. Estudo microscópico em alvéolos dentários de ratos. [Internet] [Masters thesis]. University of São Paulo; 2007. [cited 2021 Jan 16]. Available from: http://www.teses.usp.br/teses/disponiveis/25/25138/tde-04092007-111139/ ;.

Council of Science Editors:

Coneglian PZA. Avaliação do processo evolutivo de reparo ósseo frente ao sulfato de cálcio e à hidroxiapatita. Estudo microscópico em alvéolos dentários de ratos. [Masters Thesis]. University of São Paulo; 2007. Available from: http://www.teses.usp.br/teses/disponiveis/25/25138/tde-04092007-111139/ ;

Wayne State University

19. Walker, Jeremy. Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes.

Degree: PhD, Civil and Environmental Engineering, 2018, Wayne State University

URL: https://digitalcommons.wayne.edu/oa_dissertations/2132

► ABSTRACT ANALYSIS OF MICROMIXERS TO MINIMIZE SCALING EFFECTS ON REVERSE OSMOSIS MEMBRANES by Jeremy Walker December 2018 Advisor: Dr. Shawn McElmurry Major: Civil Engineering… (more)

▼ ABSTRACT ANALYSIS OF MICROMIXERS TO MINIMIZE SCALING EFFECTS ON REVERSE OSMOSIS MEMBRANES by Jeremy Walker December 2018 Advisor: Dr. Shawn McElmurry Major: Civil Engineering Degree: Doctor of Philosophy Structural elements, typically mesh spacers, are required between membrane leaves in spiral wound elements to ensure flow through reverse osmosis (RO) modules. The standard diamond-shaped mesh spacer results in non-ideal hydrodynamics that can lead to fouling, which ultimately reduces the flux of water through the membrane and the operational life of the unit. Additionally, traditional mesh feed spacers do not allow for reverse flow cleaning due to obstructed flow paths and, once fouled, the entrapment of scale. To address this shortcoming, a novel method for separating RO membrane leaves in spiral wound elements is developed and evaluated. Three-dimensional (3-D) printing was utilized to manufacture micromixers directly on membrane swatches. To enhance performance, a two-dimensional computational fluid dynamic model was used to select the optimal geometry and pattern of 3-D printed micromixers. The optimal geometry selected created unhindered flow between 0.2 m/s and 0.3m/s, using an inlet flow velocity of 0.104 m/s, across 40% of the membrane surface. Laboratory experiments were conducted to evaluate the performance of micromixers and compared to unmodified membranes with a standard 20 mil (0.508 mm) mesh feed spacer. Pure water flux and salt rejection were found to be similar to standard membranes, indicating the 3-D printing process did not damage intrinsic membrane properties. Calcium sulfate scaling experiments were conducted. Scale initially began to form within 2 hours of treatment resulting in a flux decline of approximately 10% for both modified and unmodified membranes. Over 14 hours, an average flux decrease of 24% was observed for modified membranes compared to an average flux decrease of 78% for the unmodified membranes. This demonstrated the improved resistance to fouling created by the open channel design with optimal flow conditions. Based on the open-channel flow paths created using 3-D printed micromixers, improved scale removal by reverse flow cleaning procedures was evaluated. The modified membranes showed 5-10% more removal for calcium sulfate compared to the unmodified membrane utilizing a 20 mil (0.508 mm) mesh feed spacer. Following cleaning, all three unmodified membranes and feed spacers had significant remaining scale, while all… Advisors/Committee Members: Shawn McElmurry.

Subjects/Keywords: 3 dimensional printing; Calcium sulfate; Desalination; Feed spacer; Fouling; Reverse Osmosis; Civil Engineering; Environmental Engineering

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APA (6^th Edition):

Walker, J. (2018). Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes. (Doctoral Dissertation). Wayne State University. Retrieved from https://digitalcommons.wayne.edu/oa_dissertations/2132

Chicago Manual of Style (16^th Edition):

Walker, Jeremy. “Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes.” 2018. Doctoral Dissertation, Wayne State University. Accessed January 16, 2021. https://digitalcommons.wayne.edu/oa_dissertations/2132.

MLA Handbook (7^th Edition):

Walker, Jeremy. “Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes.” 2018. Web. 16 Jan 2021.

Vancouver:

Walker J. Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes. [Internet] [Doctoral dissertation]. Wayne State University; 2018. [cited 2021 Jan 16]. Available from: https://digitalcommons.wayne.edu/oa_dissertations/2132.

Council of Science Editors:

Walker J. Analysis Of Micromixers To Minimize Scaling Effects On Reverse Osmosis Membranes. [Doctoral Dissertation]. Wayne State University; 2018. Available from: https://digitalcommons.wayne.edu/oa_dissertations/2132

Iowa State University

20. Robbins, Lanny Arnold. Gas adsorption and polymorphism in the reductive decomposition of calcium sulfate.

Degree: 1966, Iowa State University

URL: https://lib.dr.iastate.edu/rtd/2913

Subjects/Keywords: Desulfurization; Calcium sulfate; Adsorption; Chemical Engineering

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

APA (6^th Edition):

Robbins, L. A. (1966). Gas adsorption and polymorphism in the reductive decomposition of calcium sulfate. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/rtd/2913

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Robbins, Lanny Arnold. “Gas adsorption and polymorphism in the reductive decomposition of calcium sulfate.” 1966. Thesis, Iowa State University. Accessed January 16, 2021. https://lib.dr.iastate.edu/rtd/2913.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Robbins, Lanny Arnold. “Gas adsorption and polymorphism in the reductive decomposition of calcium sulfate.” 1966. Web. 16 Jan 2021.

Vancouver:

Robbins LA. Gas adsorption and polymorphism in the reductive decomposition of calcium sulfate. [Internet] [Thesis]. Iowa State University; 1966. [cited 2021 Jan 16]. Available from: https://lib.dr.iastate.edu/rtd/2913.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Robbins LA. Gas adsorption and polymorphism in the reductive decomposition of calcium sulfate. [Thesis]. Iowa State University; 1966. Available from: https://lib.dr.iastate.edu/rtd/2913

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Iowa State University

21. Bollen, Walter Michael. Thermal decomposition of calcium sulfate.

Degree: 1954, Iowa State University

URL: https://lib.dr.iastate.edu/rtd/13319

Subjects/Keywords: Calcium sulfate; Chemical Engineering; Chemical Engineering

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APA (6^th Edition):

Bollen, W. M. (1954). Thermal decomposition of calcium sulfate. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/rtd/13319

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bollen, Walter Michael. “Thermal decomposition of calcium sulfate.” 1954. Thesis, Iowa State University. Accessed January 16, 2021. https://lib.dr.iastate.edu/rtd/13319.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bollen, Walter Michael. “Thermal decomposition of calcium sulfate.” 1954. Web. 16 Jan 2021.

Vancouver:

Bollen WM. Thermal decomposition of calcium sulfate. [Internet] [Thesis]. Iowa State University; 1954. [cited 2021 Jan 16]. Available from: https://lib.dr.iastate.edu/rtd/13319.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bollen WM. Thermal decomposition of calcium sulfate. [Thesis]. Iowa State University; 1954. Available from: https://lib.dr.iastate.edu/rtd/13319

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia

22. Kruse, John Sayler. Turfgrass root-growth response to subsoil acidity and amelioration of acid subsoils with gypsum in Ultisols.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/22947

► Highly weathered Ultisols typically have subsoils with little exchangeable calcium and high exchangeable acidity, often restricting root growth into depths that offer a potential reservoir… (more)

▼ Highly weathered Ultisols typically have subsoils with little exchangeable calcium and high exchangeable acidity, often restricting root growth into depths that offer a potential reservoir of water. Research has not quantified the extent to which turfgrass root growth will respond to acid subsoils ameliorated by gypsum. Hydroponic, column, and field studies were utilized to determine gypsum efficacy. Tall fescue was grown in solutions containing levels of Al and/or CaSO4·2H2O at pH 4.5 for 7 d. Root growth was significantly reduced in low Al concentrations absent Ca. The addition of CaSO4·2H2O significantly increased root growth in the presence of Al. A simple logistic model adequately explained the relationship between Al and CaSO4·2H2O and relative root growth. Mechanistically, a computer-aided predictor of Al species (VMINTEQ) demonstrated that the addition of CaSO4·2H2O in Al solution reduced Al activity and the quantity of Al3+ as a percentage of total Al, and increased the percentage of relatively non-toxic AlSO4+ and solution ionic strength. A previously published calcium-aluminum balance equation did not adequately predict root growth or root-aluminum concentrations. Tall fescue was grown 85 d in columns filled with acid subsoils treated with lime or gypsum. After an initial period, the tall fescue was physiologically stressed by a column dry-down procedure. At experiment termination, soil columns were sectioned for chemical analysis and root density determination. Lime and gypsum ameliorated soils significantly increased exchangeable Ca and reduced exchangeable acidity. Lime and gypsum treated soils significantly increased root density over control treatments, with lime-treated soil producing a higher root-growth response than gypsum. Column evapotranspiration did not differ significantly between treatments. A field study utilizing lime, gypsum, and combinations of the two was conducted growing bermudagrass and zoysiagrass on an acid Cecil soil. Soil moisture was measured by time domain reflectometry. After 15 months, soils were analyzed by depth for chemical properties and root density. Differences in root density due to the addition of lime and gypsum were significant (a=0.10) in zoysiagrass but not bermudagrass. Despite a wet growing season, slight differences in volumetric water content were detected for zoysiagrass between 20-58 cm, but were nonexistent for bermudagrass.

Subjects/Keywords: SUBSOIL ACIDITY; GYPSUM; AMELIORATION; LIME; TURFGRASS; BERMUDAGRASS; ZOYSIAGRASS; TALL FESCUE; EXCHANGEABLE ALUMINUM; CALCIUM SULFATE; CaSO4

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

APA (6^th Edition):

Kruse, J. S. (2014). Turfgrass root-growth response to subsoil acidity and amelioration of acid subsoils with gypsum in Ultisols. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/22947

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kruse, John Sayler. “Turfgrass root-growth response to subsoil acidity and amelioration of acid subsoils with gypsum in Ultisols.” 2014. Thesis, University of Georgia. Accessed January 16, 2021. http://hdl.handle.net/10724/22947.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kruse, John Sayler. “Turfgrass root-growth response to subsoil acidity and amelioration of acid subsoils with gypsum in Ultisols.” 2014. Web. 16 Jan 2021.

Vancouver:

Kruse JS. Turfgrass root-growth response to subsoil acidity and amelioration of acid subsoils with gypsum in Ultisols. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10724/22947.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kruse JS. Turfgrass root-growth response to subsoil acidity and amelioration of acid subsoils with gypsum in Ultisols. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/22947

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of New South Wales

23. McCartney, Eric R. The effect of environmental conditions on the crystallisation process : with special reference to calcium sulphate.

Degree: Applied Science. Chemical Engineering, 1955, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/67141 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:67610/SOURCE01?view=true

Subjects/Keywords: Calcium sulfate; Crystallization; Thesis Digitisation Program

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APA (6^th Edition):

McCartney, E. R. (1955). The effect of environmental conditions on the crystallisation process : with special reference to calcium sulphate. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/67141 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:67610/SOURCE01?view=true

Chicago Manual of Style (16^th Edition):

McCartney, Eric R. “The effect of environmental conditions on the crystallisation process : with special reference to calcium sulphate.” 1955. Doctoral Dissertation, University of New South Wales. Accessed January 16, 2021. http://handle.unsw.edu.au/1959.4/67141 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:67610/SOURCE01?view=true.

MLA Handbook (7^th Edition):

McCartney, Eric R. “The effect of environmental conditions on the crystallisation process : with special reference to calcium sulphate.” 1955. Web. 16 Jan 2021.

Vancouver:

McCartney ER. The effect of environmental conditions on the crystallisation process : with special reference to calcium sulphate. [Internet] [Doctoral dissertation]. University of New South Wales; 1955. [cited 2021 Jan 16]. Available from: http://handle.unsw.edu.au/1959.4/67141 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:67610/SOURCE01?view=true.

Council of Science Editors:

McCartney ER. The effect of environmental conditions on the crystallisation process : with special reference to calcium sulphate. [Doctoral Dissertation]. University of New South Wales; 1955. Available from: http://handle.unsw.edu.au/1959.4/67141 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:67610/SOURCE01?view=true

24. Martin, Isabelle. Développement d'une matrice à base d'aluminate de calcium pour la cimentation de boues issues de la décontamination d'effluents actifs : Developement of calcium aluminate based systems for sludge cementation from radwaste decontamination.

Degree: Docteur es, Génie civil, 2016, Université Toulouse III – Paul Sabatier

URL: http://www.theses.fr/2016TOU30186

► L'industrie nucléaire est une industrie génératrice de déchets, dont certains sont radioactifs. Ces déchets radioactifs ont des formes et des origines diverses, allant de la… (more)

▼ L'industrie nucléaire est une industrie génératrice de déchets, dont certains sont radioactifs. Ces déchets radioactifs ont des formes et des origines diverses, allant de la paire de gant de manutention faiblement contaminés, à la suspension aqueuse de produits de fissions hautement radioactifs. Dans ce travail, un type de déchet bien particulier a été étudié ; des boues issues de la décontamination d'effluents liquides radioactifs, possédant entre autres les trois particularités suivantes ; * Etre moyennement radioactif, selon les critères de l'ANDRA. * Etre composé d'une forte teneur en eau de constitution (ne pouvant être retirée par simple évaporation) ; * Etre composé d'un sorbant (PPFeNi) dont la stabilité chimique n'est pas assurée pour un pH supérieur à 11. Ces particularités font qu'un enrobage dans une matrice minérale forte consommatrice d'eau, et bas-pH (pH < 11) est envisageable. Le choix c'est alors porté sur le développement d'une matrice ettringitique réalisée à partir d'un mélange de Ciment d'Aluminate de Calcium (CAC) et de sulfate de calcium. Dans un premier temps, la stabilité du sorbant du césium utilisé dans cette étude a été testée dans différents environnements de pH (2 à 14) et de température. Pour cela des analyses chimiques de solution ainsi que des caractérisations du composé par diffraction de rayons X, FTIR et microscopie électronique à balayage-EDS ont permis de fixer les bornes de stabilité que la formulation ettringitique doit avoir. Puis une étude microstructurale (nature et morphologie des produits) de mélanges ettringitiques binaires CAC/sulfate de calcium type hémihydrate et/ou anhydrite a été effectuée afin de caractériser la stabilité de l'ettringite, hydrate fort consommateur d'eau. Les propriétés bas-pH ont été vérifiées notamment par analyse chimique de solutions porales. Certaines limites de ces systèmes concernant le dégagement de chaleur et la possible formation de systèmes expansifs ont été mises en évidence. L'effet de l'augmentation du rapport eau/liant, responsable d'un effet de dilution et permettant de réduire les deux effets précédents, a été également regardé pour ces systèmes binaires. Afin de réduire la chaleur dégagée à court terme tout en permettant le développement de l'hydratation à long terme de systèmes ettringitiques, ces systèmes binaires ont été substitués par des additions minérales à hydraulicité latente type laitier de haut fourneau. Une étude microstructurale de la réactivité du laitier et de la modification de l'assemblage ettringitique a montré une réactivité modérée de ce dernier à jeune âge conformément aux attentes. Pour favoriser sa réactivité à long terme par activation alcaline/sulfatique différentes proportions de sulfate de calcium à dissolution plus lente ont été testés. Les caractéristiques microstructurales de ces systèmes ternaires en présence de différentes teneurs en eau intrinsèquement liée à la nature de type boue du déchet a été étudiée. Enfin, les différentes informations sur l'effet des paramètres de formulation obtenues ont… Advisors/Committee Members: Cyr, Martin (thesis director), Patapy, Cédric (thesis director).

Subjects/Keywords: Liants ettringitiques; Ciment d'Aluminate de Calcium (CAC); Sulfate de calcium; Laitier; Chaleur d'hydratation; Caractérisation chimie des solutions porales; Ettringite binders; Calcium Aluminate Cement (CAC); Calcium sulfate; Ground Granulated Slag Furnace (GGBS); Ground Granulated Slag Furnace (GGBS); Ground Granulated Slag Furnace (GGBS)

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

APA (6^th Edition):

Martin, I. (2016). Développement d'une matrice à base d'aluminate de calcium pour la cimentation de boues issues de la décontamination d'effluents actifs : Developement of calcium aluminate based systems for sludge cementation from radwaste decontamination. (Doctoral Dissertation). Université Toulouse III – Paul Sabatier. Retrieved from http://www.theses.fr/2016TOU30186

Chicago Manual of Style (16^th Edition):

Martin, Isabelle. “Développement d'une matrice à base d'aluminate de calcium pour la cimentation de boues issues de la décontamination d'effluents actifs : Developement of calcium aluminate based systems for sludge cementation from radwaste decontamination.” 2016. Doctoral Dissertation, Université Toulouse III – Paul Sabatier. Accessed January 16, 2021. http://www.theses.fr/2016TOU30186.

MLA Handbook (7^th Edition):

Martin, Isabelle. “Développement d'une matrice à base d'aluminate de calcium pour la cimentation de boues issues de la décontamination d'effluents actifs : Developement of calcium aluminate based systems for sludge cementation from radwaste decontamination.” 2016. Web. 16 Jan 2021.

Vancouver:

Martin I. Développement d'une matrice à base d'aluminate de calcium pour la cimentation de boues issues de la décontamination d'effluents actifs : Developement of calcium aluminate based systems for sludge cementation from radwaste decontamination. [Internet] [Doctoral dissertation]. Université Toulouse III – Paul Sabatier; 2016. [cited 2021 Jan 16]. Available from: http://www.theses.fr/2016TOU30186.

Council of Science Editors:

Martin I. Développement d'une matrice à base d'aluminate de calcium pour la cimentation de boues issues de la décontamination d'effluents actifs : Developement of calcium aluminate based systems for sludge cementation from radwaste decontamination. [Doctoral Dissertation]. Université Toulouse III – Paul Sabatier; 2016. Available from: http://www.theses.fr/2016TOU30186

25. Tanamati, Fábio Yomei [UNESP]. Nitrogênio e potássio em cobertura na nutrição e produtividade do alho vernalizado livre de vírus e qualidade do alho minimamente processado.

Degree: 2016, Universidade Estadual Paulista

URL: http://hdl.handle.net/11449/146744

►

O alho é uma hortaliça utilizada como condimento e como planta medicinal. O Brasil é um importante produtor/consumidor desta hortaliça, entretanto a produção nacional é… (more)

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O alho é uma hortaliça utilizada como condimento e como planta medicinal. O Brasil é um importante produtor/consumidor desta hortaliça, entretanto a produção nacional é insuficiente e portanto importa de quase 60% do alho consumido. Práticas precisas de manejo na produção e pós-colheita precisas podem resultar em economia na produção, aumento da produtividade e qualidade. Entre as práticas de manejo destaca-se a fertilização destaca-se pela influência direta na produção do alho e constituir um dos principais itens do custo de produção. Após a colheita a deterioração do alho minimamente processado (produto com maior valor agregado) pode ser diminuída através do armazenamento em temperatura controlada e atmosfera modificada. Com o objetivo de avaliar e documentar as melhores fontes e doses de nitrogênio e fontes potássio, bem como o melhor método para o armazenamento do alho minimamente processado foram conduzidos três ensaios que serão apresentados em três capítulos, sendo o primeiro intitulado “Fontes de nitrogênio e potássio sob a produtividade e nutrição mineral do alho”, o segundo capítulo intitulado “Produtividade e nutrição mineral do alho sob diferentes doses de nitrogênio e fontes de potássio”, e o terceiro capítulo intitulado “Efeito de diferentes temperaturas e atmosfera modificada sob as características qualitativas do alho minimamente processado”. Concluiu- se a) Diferentes fontes de N e K podem ser combinadas para a obtenção de máxima produção de alho comercial, b) o teor de nutrientes do alho não é influenciado pelas fontes de N e K ao ponto de constituir um fator crítico à produtividade do alho, c) Recomenda-se a dose 80 kg ha -1 de N como forma de obtenção de máxima eficiência do fertilizante e produtiva do alho vernalizado livre de vírus cv. Caçador, d) Não houve diferenças significativas na produção do alho acima da dose 80 kg ha -1 de N, a partir desta dose, o acúmulo de nutrientes no bulbo, de forma geral, foi inferior nos tratamentos K2SO4, e) baixa temperatura e atmosfera modificada contribuem significativamente para a manutenção da qualidade do alho minimamente processado, f) embalagem a vácuo mantém uma atmosfera consistentes em uma maior gama de temperaturas, g) as atmosferas modificadas com alto teor de CO2 podem influenciar a diminuição do valor de L* durante o armazenamento, h) a pungência do alho é mais bem conservada em embalagens a vácuo.

Garlic is used as a spice and as a medicinal plant, Brazil is an important producer/ consumer of this herb, however small domestic production stimulates import of about 60% the garlic consumed in this country. Management practices in the production and accurate post-harvest can result in savings in production and increasing in yield and quality. Among the management practices, fertilization is distinguished by its direct influence on the production of garlic and constitute one of the main cost items of production and postharvest deterioration of minimally processed garlic (product with higher added value) can be reduced by storing in controlled and…

Advisors/Committee Members: Fernandes, Dirceu Maximino [UNESP], Universidade Estadual Paulista (UNESP).

Subjects/Keywords: Allium sativum; Uréia; Sulfato de amônio; Nitrato de amônio; Nitrato de cálcio; Cloreto de potássio; Sulfato de potássio; Urea; Ammonium sulfate; Ammonium nitrate; Calcium nitrate; Potassium chloride; Potassium sulfate

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

APA (6^th Edition):

Tanamati, F. Y. [. (2016). Nitrogênio e potássio em cobertura na nutrição e produtividade do alho vernalizado livre de vírus e qualidade do alho minimamente processado. (Thesis). Universidade Estadual Paulista. Retrieved from http://hdl.handle.net/11449/146744

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tanamati, Fábio Yomei [UNESP]. “Nitrogênio e potássio em cobertura na nutrição e produtividade do alho vernalizado livre de vírus e qualidade do alho minimamente processado.” 2016. Thesis, Universidade Estadual Paulista. Accessed January 16, 2021. http://hdl.handle.net/11449/146744.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tanamati, Fábio Yomei [UNESP]. “Nitrogênio e potássio em cobertura na nutrição e produtividade do alho vernalizado livre de vírus e qualidade do alho minimamente processado.” 2016. Web. 16 Jan 2021.

Vancouver:

Tanamati FY[. Nitrogênio e potássio em cobertura na nutrição e produtividade do alho vernalizado livre de vírus e qualidade do alho minimamente processado. [Internet] [Thesis]. Universidade Estadual Paulista; 2016. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/11449/146744.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tanamati FY[. Nitrogênio e potássio em cobertura na nutrição e produtividade do alho vernalizado livre de vírus e qualidade do alho minimamente processado. [Thesis]. Universidade Estadual Paulista; 2016. Available from: http://hdl.handle.net/11449/146744

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

26. Grey, Catherine Vyvian. Physiochemical Treatment Options for High-Conductivity Coal Mining Runoff.

Degree: MS, Environmental Engineering, 2017, Virginia Tech

URL: http://hdl.handle.net/10919/85011

► In recent years, the excessive specific conductance (SC) of Appalachian coal mining runoff waters has become a parameter of concern with the EPA due to… (more)

Subjects/Keywords: Ion Exchange; Softening; Chemical Softening; Calcium; Magnesium; Sulfate; Suphate; Specific Conductance; Cost Effective Sulfate Removal Process; CESR Process; Total Dissolved Solids; TDS

4 more images…

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

APA (6^th Edition):

Grey, C. V. (2017). Physiochemical Treatment Options for High-Conductivity Coal Mining Runoff. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/85011

Chicago Manual of Style (16^th Edition):

Grey, Catherine Vyvian. “Physiochemical Treatment Options for High-Conductivity Coal Mining Runoff.” 2017. Masters Thesis, Virginia Tech. Accessed January 16, 2021. http://hdl.handle.net/10919/85011.

MLA Handbook (7^th Edition):

Grey, Catherine Vyvian. “Physiochemical Treatment Options for High-Conductivity Coal Mining Runoff.” 2017. Web. 16 Jan 2021.

Vancouver:

Grey CV. Physiochemical Treatment Options for High-Conductivity Coal Mining Runoff. [Internet] [Masters thesis]. Virginia Tech; 2017. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/10919/85011.

Council of Science Editors:

Grey CV. Physiochemical Treatment Options for High-Conductivity Coal Mining Runoff. [Masters Thesis]. Virginia Tech; 2017. Available from: http://hdl.handle.net/10919/85011

27. Kedziora, Charlotte. Propriétés d’usage et mécanismes d’hydratation du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier de Haut Fourneau] à haute teneur en sulfate de calcium : De l’approche expérimentale à la modélisation : Usage properties and hydration mechanisms of ternary binder [Calcium Aluminate Cement – Calcium Sulfate – Ground Granulated Blast Furnace Slag] with high content of calcium sulfate : From experimental approach to modelling.

Degree: Docteur es, Génie civil, 2015, INSA Lyon

URL: http://www.theses.fr/2015ISAL0047

►

L’étude menée s’attache à évaluer le potentiel d’activation du laitier de haut fourneau dans un liant ternaire constitué de ciment alumineux, de sulfate de calcium… (more)

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L’étude menée s’attache à évaluer le potentiel d’activation du laitier de haut fourneau dans un liant ternaire constitué de ciment alumineux, de sulfate de calcium et de laitier. Dans ce système ternaire, le constituant majoritaire est le sulfate de calcium. Le potentiel d’un tel système n’est pas encore connu mais cette étude vise à renseigner sur les principaux avantages et limites d’utilisation. D’un point de vue des propriétés d’usage de ce liant, la prise, le durcissement rapide et la montée des résistances sont assurés par le liant ettringitique. Ensuite, et uniquement si la dessiccation est évitée, le laitier de haut fourneau réagit et dans ce cas, l’apport du laitier dans de tels systèmes est double. Il contribue à l’augmentation des performances mécaniques à moyen et long terme et à limiter l’expansion sous eau. D’un point de vue de la compréhension des mécanismes d’hydratation, une démarche expérimentale originale est mise en place et dévoile le potentiel du laitier. Elle est basée sur la comparaison des performances obtenues avec différentes cures. Le potentiel d’hydratation du laitier est amplifié lorsque le système subit un séchage puis une réhydratation. Cependant, les techniques utilisées (diffraction des rayons X et calorimétrie différentielle à balayage) ne sont pas adaptées au suivi et à la quantification de laitier consommé. Ainsi, la compréhension de l’hydratation s’appuie sur des techniques dites indirectes. Une semi-quantification par diffraction des rayons X est réalisée pour le suivi et l’évaluation de la mayénite, le sulfate de calcium (anhydre ou dihydraté), la syngénite et l’ettringite, l’analyse thermogravimétrique permet de mesurer le degré d’hydratation du système, et la porosimétrie mercure informe sur les changements microstructuraux. La plus grosse difficulté dans ces travaux a porté sur le suivi et la quantification des phases amorphes (anhydres ou hydratées), telles que le laitier, les gels de C-S-H et d’AH3, et c’est pour cette raison qu’une approche par modélisation a été mise en place afin d’identifier le rôle de chaque constituant du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier] et particulièrement du laitier lors de l’essai de réhydratation. L’approche par modélisation permet de mieux identifier les phénomènes chimiques et physiques ayant lieu lors de l’hydratation du liant. Elle est utilisée pour expliquer les observations macroscopiques (comme les performances mécaniques) et aide à déterminer les cinétique d’hydratation dans le milieu poreux. Le modèle utilisé n’est pas encore parfaitement au point mais il a permis d’identifier les différentes séquences d’hydratation (à savoir que le liant ettringitique réagit dans les premiers instants et qu’ensuite, l’hydratation de l’anhydrite entraine la formation de gypse et l’hydratation du laitier est effective à long terme) et de confirmer que la réaction du laitier est lente.

The potential of activation of a Ground Granulated Blast Furnace Slag has been evaluated into a ternary system comprising of a Calcium…

Advisors/Committee Members: Georgin, Jean-François (thesis director).

Subjects/Keywords: Matériaux; Ciment alumineux; Sulfate de calcium; Laitier de haut-Fourneau; Cure; Hydratation; Cinétique; Modélisation; Liant; Microstructure; Materials; Calcium aluminate cement; Calcium sulfate; Blast-Furnace slag; Cure; Hydration; Kinetic; Modelling; Binder; Microstructurl; 620.112 072

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

APA (6^th Edition):

Kedziora, C. (2015). Propriétés d’usage et mécanismes d’hydratation du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier de Haut Fourneau] à haute teneur en sulfate de calcium : De l’approche expérimentale à la modélisation : Usage properties and hydration mechanisms of ternary binder [Calcium Aluminate Cement – Calcium Sulfate – Ground Granulated Blast Furnace Slag] with high content of calcium sulfate : From experimental approach to modelling. (Doctoral Dissertation). INSA Lyon. Retrieved from http://www.theses.fr/2015ISAL0047

Chicago Manual of Style (16^th Edition):

Kedziora, Charlotte. “Propriétés d’usage et mécanismes d’hydratation du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier de Haut Fourneau] à haute teneur en sulfate de calcium : De l’approche expérimentale à la modélisation : Usage properties and hydration mechanisms of ternary binder [Calcium Aluminate Cement – Calcium Sulfate – Ground Granulated Blast Furnace Slag] with high content of calcium sulfate : From experimental approach to modelling.” 2015. Doctoral Dissertation, INSA Lyon. Accessed January 16, 2021. http://www.theses.fr/2015ISAL0047.

MLA Handbook (7^th Edition):

Kedziora, Charlotte. “Propriétés d’usage et mécanismes d’hydratation du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier de Haut Fourneau] à haute teneur en sulfate de calcium : De l’approche expérimentale à la modélisation : Usage properties and hydration mechanisms of ternary binder [Calcium Aluminate Cement – Calcium Sulfate – Ground Granulated Blast Furnace Slag] with high content of calcium sulfate : From experimental approach to modelling.” 2015. Web. 16 Jan 2021.

Vancouver:

Kedziora C. Propriétés d’usage et mécanismes d’hydratation du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier de Haut Fourneau] à haute teneur en sulfate de calcium : De l’approche expérimentale à la modélisation : Usage properties and hydration mechanisms of ternary binder [Calcium Aluminate Cement – Calcium Sulfate – Ground Granulated Blast Furnace Slag] with high content of calcium sulfate : From experimental approach to modelling. [Internet] [Doctoral dissertation]. INSA Lyon; 2015. [cited 2021 Jan 16]. Available from: http://www.theses.fr/2015ISAL0047.

Council of Science Editors:

Kedziora C. Propriétés d’usage et mécanismes d’hydratation du système ternaire [Ciment Alumineux – Sulfate de Calcium – Laitier de Haut Fourneau] à haute teneur en sulfate de calcium : De l’approche expérimentale à la modélisation : Usage properties and hydration mechanisms of ternary binder [Calcium Aluminate Cement – Calcium Sulfate – Ground Granulated Blast Furnace Slag] with high content of calcium sulfate : From experimental approach to modelling. [Doctoral Dissertation]. INSA Lyon; 2015. Available from: http://www.theses.fr/2015ISAL0047

28. Nunes, Maíra Goes. Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons.

Degree: PhD, Tecnologia Nuclear - Aplicações, 2012, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-09122013-140708/ ;

►

Detectores de sulfato de cálcio ativado com cério IV e európio III utilizando o politetrafluoretileno (PTFE, Teflon®) free-flow como aglutinante (CaSO4:Ce,Eu + Teflon®) foram produzidos… (more)

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Detectores de sulfato de cálcio ativado com cério IV e európio III utilizando o politetrafluoretileno (PTFE, Teflon®) free-flow como aglutinante (CaSO4:Ce,Eu + Teflon®) foram produzidos pelo método da estampagem, desenvolvido em colaboração com a empresa Tecnoflon, a partir de cristais crescidos de acordo com uma nova variação da rota da evaporação lenta, também apresentada nesse trabalho, com as concentrações de 0,16 mol% de Eu3+ e de 0,15 mol% de Ce4+ na solução ácida precursora. O modelo de dosímetro pessoal desenvolvido consiste em cinco detectores aderidos a um cartão de 30 x 48 mm de cloreto de polivinila (PVC) 95% opaco à luz na faixa do espectro eletromagnético que vai do infravermelho ao ultravioleta, idêntico aos cartões de identificação utilizados no IPEN, por uma tira de 10 x 35 mm de filme adesivo do mesmo material e foi submetido aos testes de aceitação descritos no regulamento técnico IRD-RT Nº 002.01/95, Desempenho de Sistemas de Monitoração Individual Critérios e Condições, sendo aprovado em todos os testes. Para a dosimetria clínica, os próprios detectores foram considerados dosímetros termoluminescentes e submetidos aos testes de aceitação descritos no código de práticas da Agência Internacional de Energia Atômica Technical Report Series Nº 398, Absorbed Dose Determination in External Beam Radiotherapy: An International Code of Practice for Dosimetry based on Standards of Absorbed Dose to Water, [TRS-398, IAEA, 2000] adotado como protocolo de dosimetria pela maioria dos hospitais, sendo igualmente aprovados nesses testes. Os dosímetros desenvolvidos podem ser utilizados para a monitoração individual externa e para dosimetria clínica, apresentando a diferenciação do tipo e da energia da radiação com que foram irradiados e a redução de custos como as principais vantagens em relação aos dosímetros termoluminescentes atualmente utilizados nessas aplicações.

Calcium sulphate activated with cerium IV and europium III using the free-flow polytetrafluoroethylene (PTFE, Teflon®) as bonder were produced by the stamping method, developed by the collaboration of Tecnoflon industries, from crystals growth according to a new variation of the slow evaporation method, also described in this study, with Eu3+ and Ce4+ concentrations of respectively 0.15 mol% and 0.16 mol% in the precursory acid solution. The developed personal dosimeter consist of five detectors adhered to a 30 x 48 mm polyvinyl chloride (PVC) card 95% mat to light in the infrared to ultraviolet wavelengths, identical to the access cards used by IPEN staff, by a 10 x 35 mm adhesive strip of the same material and it passed the acceptance tests required by Brazilian national regulatory committee for appliance in individual monitoring of external exposure services. The own detector is considered a dosimeter as far as clinical dosimetry is concerned and it passed the acceptance tests suggested by the International Atomic Energy Agency in the Technical Report Series Nº 398, Absorbed Dose Determination in External Beam Radiotherapy: An International…

Advisors/Committee Members: Rodrigues, Letícia Lucente Campos.

Subjects/Keywords: calcium sulfate; dosimetria; dosimetry; individual monitoring of external exposure; monitoração individual externa; rare earths; sulfato de cálcio; termoluminescência; terras raras; thermoluminescence

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

APA (6^th Edition):

Nunes, M. G. (2012). Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/85/85131/tde-09122013-140708/ ;

Chicago Manual of Style (16^th Edition):

Nunes, Maíra Goes. “Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons.” 2012. Doctoral Dissertation, University of São Paulo. Accessed January 16, 2021. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-09122013-140708/ ;.

MLA Handbook (7^th Edition):

Nunes, Maíra Goes. “Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons.” 2012. Web. 16 Jan 2021.

Vancouver:

Nunes MG. Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons. [Internet] [Doctoral dissertation]. University of São Paulo; 2012. [cited 2021 Jan 16]. Available from: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-09122013-140708/ ;.

Council of Science Editors:

Nunes MG. Desenvolvimento do dosímetro termoluminescente de CaSO4:Ce, Eu para a monitoração individual e a dosimetria clínica de fótons e elétrons. [Doctoral Dissertation]. University of São Paulo; 2012. Available from: http://www.teses.usp.br/teses/disponiveis/85/85131/tde-09122013-140708/ ;

University of Pretoria

29. Govender, Desania Raquel. The burn rate of calcium sulfate dihydrate-aluminium thermites.

Degree: MEng, Chemical Engineering, 2018, University of Pretoria

URL: http://hdl.handle.net/2263/66196

► The energetics of cast calcium sulfate dihydrate-aluminium thermites was explored and its use as a potential metal-cutting tool was investigated. Thermite is a pyrotechnic composition… (more)

▼ The energetics of cast calcium sulfate dihydrate-aluminium thermites was explored and its use as a potential metal-cutting tool was investigated. Thermite is a pyrotechnic composition that undergoes a highly exothermic reaction that burns relatively slowly. It is often used in cutting, welding and incendiary devices. Consolidation of thermite by casting was chosen to enable control of the burning front. The base case thermite comprised 60 wt-% calcium sulfate dihydrate oxidiser and 40 wt-% aluminium fuel. Addition of additives were considered for their effect on the cast thermite’s setting time, density, surface temperature, reaction products and burn rate. EKVI and FactSage thermodynamic simulations were used to determine optimum compositions for the various systems. The thermite powder compositions were sieved before mixing with water and casting in a mould. The casts were allowed to set for 3 days to form calcium sulfate dihydrate-aluminium compositions. The copper sulfate pentahydrate additive was found to significantly decrease the setting time of the casts. The heat of hydration of the base case was 59 ± 8 J g−1 . The compressive strength reached 2.9 ± 0.2 MPa, the open air burn rate was 12.0 ± 1.6 mm s −1 and a maximum surface temperature of 1370 ± 64 °C was recorded using a pyrometer. Bomb calorimetry indicated an energy output of 7.96 ± 1.07 MJ kg−1 , slightly lower than predicted by the EKVI simulation. The density of the castings was varied by either adding hollow sodium borosilicate glass spheres or by adding excess water. The glass spheres resulted in a burn rate that decreased nonlinearly with decreasing cast density. The excess water made no changes to the burning, except for increasing the burn rate of the copper sulfate pentahydrate-based thermite. Calcium sulfate in the casts was also dehydrated by thermal treatments at 155 °C and 200 °C. This resulted in significant increases in the burn rate due to the porosity created by the evaporation of the hydration waters. Castings that were thermally treated in an oven at 155 °C were successful in puncturing part of an aluminium block in confined burn tests. A hole with a diameter of ~13.6 mm and depth of ~7 mm was produced. It is recommended that the composition with copper sulfate pentahydrate be used as a binder in further tests. Advisors/Committee Members: Focke, Walter Wilhelm (advisor).

Subjects/Keywords: UCTD; Cast thermite; Burn rate; Calcium sulfate dihydrate; Aluminium

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APA (6^th Edition):

Govender, D. R. (2018). The burn rate of calcium sulfate dihydrate-aluminium thermites. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/66196

Chicago Manual of Style (16^th Edition):

Govender, Desania Raquel. “The burn rate of calcium sulfate dihydrate-aluminium thermites.” 2018. Masters Thesis, University of Pretoria. Accessed January 16, 2021. http://hdl.handle.net/2263/66196.

MLA Handbook (7^th Edition):

Govender, Desania Raquel. “The burn rate of calcium sulfate dihydrate-aluminium thermites.” 2018. Web. 16 Jan 2021.

Vancouver:

Govender DR. The burn rate of calcium sulfate dihydrate-aluminium thermites. [Internet] [Masters thesis]. University of Pretoria; 2018. [cited 2021 Jan 16]. Available from: http://hdl.handle.net/2263/66196.

Council of Science Editors:

Govender DR. The burn rate of calcium sulfate dihydrate-aluminium thermites. [Masters Thesis]. University of Pretoria; 2018. Available from: http://hdl.handle.net/2263/66196

Iowa State University

30. Amin, Ashok Babubhai. Calcium sulfate crystallization in phosphoric acid.

Degree: 1966, Iowa State University

URL: https://lib.dr.iastate.edu/rtd/2852

Subjects/Keywords: Crystallization; Phosphoric acid; Calcium sulfate; Chemical Engineering

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Amin, A. B. (1966). Calcium sulfate crystallization in phosphoric acid. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/rtd/2852

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Amin, Ashok Babubhai. “Calcium sulfate crystallization in phosphoric acid.” 1966. Thesis, Iowa State University. Accessed January 16, 2021. https://lib.dr.iastate.edu/rtd/2852.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Amin, Ashok Babubhai. “Calcium sulfate crystallization in phosphoric acid.” 1966. Web. 16 Jan 2021.

Vancouver:

Amin AB. Calcium sulfate crystallization in phosphoric acid. [Internet] [Thesis]. Iowa State University; 1966. [cited 2021 Jan 16]. Available from: https://lib.dr.iastate.edu/rtd/2852.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Amin AB. Calcium sulfate crystallization in phosphoric acid. [Thesis]. Iowa State University; 1966. Available from: https://lib.dr.iastate.edu/rtd/2852

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations