Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 91 for “"BPA"”.
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Manual de buenas prácticas agricolas (BPA) para la producción de fresa (Fragaria spp) Jinotega, Nicaragua
… de la aplicación de Buenas Prácticas Agrícolas (BPA) y obtener información básica para diseñar un Manual de BPAs en el cultivo de la fresa, se realizó un diagnóstico en 3 fincas productoras de fresa de uso industrial del departamento de Jinotega, Nicaragua. Dicho diagnóstico se llevó a cabo el 1 …
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Circulating sex hormone levels in rats: a systematic analysis of the literature and perinatal BPA study
… endocrine disrupting chemical, bisphenol-A (BPA), at environmentally relevant ranges on the sex hormones, follicle-stimulating hormone (FSH), luteinizing hormone (LH), T, E2, and P4 in perinatally exposed, infantile rats. We found no effect of BPA on sex hormone levels in these rats, which is …
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Experimental evaluation and mathematical modeling of the pharmacokinetics of boronophenylalanine-fructose (BPA-f) in murine tumor models
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1999.
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Factors and Outcomes Associated with Bisphenol A Exposure in Women of Reproductive Age
… health threat from exposure to bisphenol A (BPA). This common chemical to which most humans are exposed has long been known to have estrogenic properties, but much more research is needed on the effects of BPA exposure during pregnancy.</p><p>Objectives. To address this uncertainty, we …
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Mechanistic understanding of biogenic Mn-oxide mediated bisphenol A degradation
Bisphenol A (BPA) is a monomer of polycarbonate plastic which is produced in a large volume. The environmental fate of BPA has been of great concern due to its estrogenic properties. BPA had been considered recalcitrant under anoxic conditions, but recent studies showed that BPA is degraded by …
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Mechanism of Bisphenol A toxicity in adult mouse ovarian antral follicles
Bisphenol A (BPA) is an endocrine disrupting chemical widely used in the manufacturing of commonly used consumer products containing polycarbonate plastics, epoxy resins, dental sealants, and receipt paper. During a process called leaching, the ester bonds maintaining BPA polymers can break, …
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Soft Real-Time Switched Ethernet: Best-Effort Packet Scheduling Algorithm, Implementation, and Feasibility Analysis
… called Best-effort Packet Scheduling Algorithm(BPA), for real-time switched Ethernet networks. BPA considers a message model where application messages have trans-node timeliness requirements that are specified using Jensen's benefit functions. The algorithm seeks to maximize aggregate message …
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Oxidation of Bisphenol A, Triclosan and 4-Nonylphenol by Fe-B* activated peroxide
The widely used Bisphenol A (BPA), triclosan (TCS) and nonylphenol (NP) are commonly encountered as contaminants in wastewater and surface water as a result of their incomplete treatment in traditional water treatment facilities. The presence of these compounds in our water resources poses direct …
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Perinatal high-fat diet and Bisphenol A: effects on behavior, gene expression and neuroanatomy in the medial prefrontal cortex
Bisphenol A (BPA) is a synthetic industrial compound that is used to create polycarbonate plastics and epoxy resins. When BPA is consumed, most commonly through food and drink, it can act as an endocrine disruptor binding to estrogen-related, estrogen, androgen, and thyroid receptors. Abnormal …
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Diagnóstico sobre la implementación de las Buenas Prácticas Avícolas (BPA) en pequeños y medianos productores de huevos de consumo, en los departamentos de Masaya, Managua y Chinandega
… implementación de las buenas prácticas avícolas (BPA) en pequeños y medianos productores de huevos de consumo, en los departamentos de Masaya, Managua y Chinandega, en el periodo comprendido de febrero del 2011 a Febrero del 2012. Se seleccionó la muestra de acuerdo a los siguientes criterios: …
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Diagnostico del estado de aplicación de buenas prácticas agrícolas en una unidad de producción de guayaba (Psidium guajava L), del departamento de Granada, Nicaragua
… la aplicación de Buenas Prácticas Agrícolas (BPA) en la finca San Jacobo en el Municipio de Granada, Nicaragua. Para este estudio se utilizó el formato oficial que el Ministerio Agropecuario y Forestal (MAGFOR) emplea para este tipo de diagnostico. Dicho instrumento contiene 15 secciones y por …
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Effects of bisphenol A exposure during early development on behavior and anatomy of the prefrontal cortex in adult male and female rats
… work has shown that exposure to bisphenol A (BPA) during early development can affect behavior and sexual differentiation of the brain in rodents, although few studies have examined effects on cognitive behavior and associated areas of the brain. The current study examined if exposure to BPA …
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Characterization, Functionalization, and Adsorption Behavior of Single-Walled Carbon Nanotubes towards Bisphenol A and 17 Β- Estradiol
… endocrine disrupting compounds: bisphenol A (BPA) and 17 β-estradiol (E2). Initially, a protocol was developed to understand the effect of ultrasonication on the dispersion of SWNTs in water. The results of adsorption experiments have showed that BPA and E2 can be removed from water by …
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Effects of Bisphenol-A and Styrene on Fertilization and Development of the Purple Sea Urchin (Strongylocentrotus purpuratus)
… they also leach chemicals, such as bisphenol-A (BPA) and styrene into the aquatic environment. While some of these chemicals are known to be toxic, few studies have examined their effects on broadcast spawning marine invertebrates, specifically at environmentally relevant concentrations. Purple …
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Bisphenol A and Obesity
… environmental chemicals, such as Bisphenol A (BPA), recently linked to altered adipose and glucose metabolism, may be aggravating the problem. Due to chronic human exposure, research is needed to confirm whether or not BPA is able to increase the fat deposition or otherwise alter weight …
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The aryl hydrocarbon receptor signaling pathway and adverse reproductive outcomes
… hypothesis that various doses of bisphenol A (BPA) inhibit growth and reduce estradiol biosynthesis in isolated mouse antral follicles. I also tested the hypothesis that the toxic effects of BPA are mediated via the AHR signaling pathway. To test these hypotheses, I cultured mouse antral …
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Developing business process analyst competencies through higher education institution interventions - a Kenyan study
… rise to the need for business process analyst (BPA) role. BPAs are essential to driving both BPM initiatives and ERP systems implementations. Given this scenario, the first motivation for this study was to investigate the status of BPM in Kenya and the role of the BPA in organizations in Kenya. …
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Diagnóstico sobre la aplicación de buenas prácticas agrícolas en seis unidades de producción del cultivo de la piña (Ananas comosus L) en el municipio de Nueva Guinea RAAS, Nicaragua
… la aplicación de Buenas Prácticas Agrícolas (BPA) en seis unidades de producción del cultivo de la Piña ( Ananás comosus L) en el Municipio de Nueva Guinea RAAS, Nicaragua. Para realizar este estudio se utilizó el formato oficial que el Ministerio Agropecuario-Forestal (MAGFOR) emplea para …
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Chronic toxicity of phthalates, biphenol and a Canadian bottled water stored under different light regimes using the Cnidarian Hydra Viridissima©
… and polyethylene plastics, bisphenol A (BPA) and two phthalate esters: dibutyl phthalate (DBP) and bis (2- ethylhexyl) phthalate (DEHP) along with one type of commercial bottled water were investigated. One brand of bottled water was analyzed over four months (stored in light and dark …
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Chemical Mixtures of Xenoestrogens and Their Metabolites Alter Estradiol-Induced Non-Genomic Signaling
… responses of physiologic estrogens. Bisphenol-A (BPA), a plastics monomer, is potently estrogenic via non-genomic signaling; however, bisphenol-S (BPS), a BPA substitute, has unknown endocrine actions. Nonylphenol is a surfactant and a ubiquitous contaminant. Our goals were to use a …
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