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Showing 1 to 20 of 130 for “"bisphenol A"”.
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Bisphenol A and Obesity
… evidence that 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 …
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Surface properties of poly(bisphenol-A-carbonate)
The work presented in this thesis consists of several strands: <br></br><br></br>(a) the development of a technique to measure surface free energies of amorphous polymers <br></br>(b) an investigation of chemical polishing and <br></br>c) the problems of injection moulded polycarbonate. …
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A Study of Crystallization in Bisphenol-A Polycarbonate
The crystallization behavior of bisphenol-A polycarbonate (BAPC) was studied, focusing on the initial stage of crystallization and the secondary stage of crystallization. Bisphenol-A polycarbonate was the polymer chosen for this study because of its slow crystallization rate. With slow …
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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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SYNTHESES AND ESTROGENICITY STUDY OF DIETHYLSTILBESTROL AND BISPHENOL-A ANALOGS AS POTENTIAL REPLACEMENT FOR BISPHENOL-A AND INVESTIGATION ON NOVEL REACTIONS INDUCED BY IODANE/QUATERNARY AMMONIUM HALIDES
… than that of DES. Non-estrogenic analogs of bisphenol-A were designed based on the observation that (15) is far less estrogenic than DES. Closed ring analogs of bisphenol-A, 3,6-dihydroxy-9,9-dimethylfluorene (34), 2,6-dihydroxy-9,9-dimethylfluorene (35), and 2,7-dhydroxy-9,9-dimethylfluorene …
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Factors and Outcomes Associated with Bisphenol A Exposure in Women of Reproductive Age
… the reproductive 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 …
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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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Crystallization Behavior of Bisphenol-A Polycarbonate: Effects of Crystallization Time, Temperature, and Molar Mass
Crystallization and multiple melting behavior of bisphenol-A polycarbonate (PC) was investigated using differential scanning calorimetry (DSC) for the monitoring of thermal behavior and atomic force microscopy (AFM) for the morphology study. The exceedingly slow crystallization kinetics of PC and …
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Set shifting ability of rats perinatally exposed to bisphenol A and a high fat diet
Bisphenol-A (BPA) is an endocrine disruptor found ubiquitously in the environment. It has been shown to have a wide variety of effects on behavior and cognition as well as causing inflammation in the brain. Additionally, the traditional American diet is high fat, which also contributes to both …
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Defining critical windows in pituitary development and elucidating sex differences in response to bisphenoL A
Open Restriction set for Item 102628 on 2019-06-12T18:33:51Z with date null by mhoh2@illinois.edu.
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Characterization, Functionalization, and Adsorption Behavior of Single-Walled Carbon Nanotubes towards Bisphenol A and 17 Β- Estradiol
… representative 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 …
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Effects of Bisphenol-A and Styrene on Fertilization and Development of the Purple Sea Urchin (Strongylocentrotus purpuratus)
… birds, but 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 …
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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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Effects of bisphenol A exposure during early development on behavior and anatomy of the prefrontal cortex in adult male and female rats
Previous 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 …
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Synthesis and Thermal Characterization of a Series of Copolyesters Synthesized from Terephthaloyl Chloride, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, and Bisphenol A, AF, F, and HPF
… replace or use along with rigid aromatic dials. Bisphenols A, AF, F, and HPF have also been used as the aforementioned aromatic dials due to their common industrial use. Copolymers of CBDO, terephthaloyl chloride, and the various bisphenols were synthesized and characterized for structure and …
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Beurteilung von Phyto- und Xenoöstrogenen am Beispiel ausgewählter Substanzen
Bei Daidzein und Bisphenol A handelt es sich um zwei Vertreter einer Klasse von Stoffen, die als „Umwelthormone“ (engl. endocrine disrupter) bezeichnet werden. Aus der Gruppe der Phytoöstrogene wurde Daidzein als wichtiger Vertreter, der in hohen Konzentrationen in vielen Nutzpflanzen und …
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Der Einfluss von hormonell wirksamen Umweltchemikalien auf die Populationsökologie von Gammarus fossarum
… Substanzen wurde eine Einzelsubstanz, Bisphenol A, für ein Fließrinnenexperiment ausgewählt. In künstlichen Fließrinnen im Gewächshaus wurde G. fossarum paarweise, in Gruppen sowie als größenstrukturierte Population in der Fließrinne selbst über 103 Tage exponiert, und verschiedene …
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