Results 51 to 60 of about 72,179 (290)

The Thermal degradation of Bisphenol A Polycarbonate in Air [PDF]

open access: yes, 2005
The thermal degradation of polycarbonate in air was studied as a function of mass loss using TGA/FTIR, GC/MS and LC/MS. In the main degradation region, 480–560 °C, the assigned structures of smaller molecules and linear molecules that evolved in air were
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Gene Expression Modulation of Markers Involved in Bone Formation and Resorption by Bisphenol A, Bisphenol F, Bisphenol S, and Bisphenol AF. [PDF]

open access: yesGenes (Basel)
Background: Bisphenol A (BPA) and its analogs (BPF, BPS, and BPAF) are recognized for inducing detrimental effects on various tissues, including bone. Objectives: The aim of this study is to investigate their impact on information and repair processes, specifically focusing on vascular endothelial growth factor (VEGF), transforming growth factor β1 ...
García-Recio E   +4 more
europepmc   +4 more sources

Evidence linking exposure of fish primary macrophages to antibiotics activates the NF-kB pathway. [PDF]

open access: yes, 2020
Low doses of antibiotics are ubiquitous in the marine environment and may exert negative effects on non-target aquatic organisms. Using primary macrophages of common carp, we investigated the mechanisms of action following exposure to several common ...
Chen, Qiqing   +8 more
core  

Emerging bisphenol a replacements (colour developers) in indoor dust from Spain

open access: yesEmerging Contaminants, 2019
Bisphenol A (BPA) and replacements, such as bisphenol S (BPS) and F (BPF) and other substitutes (BPS-MAE, D-8 and TGSA) have been recently reported in thermal paper.
María Jesús Dueñas-Mas   +2 more
doaj   +1 more source

Metabolomics Reveals That Bisphenol Pollutants Impair Protein Synthesis-Related Pathways in Daphnia magna

open access: yesMetabolites, 2021
Bisphenols are used in the production of polycarbonate plastics and epoxy resins. Bisphenol A (BPA) has been widely studied and is believed to act as an endocrine disruptor.
Erico A. Oliveira Pereira   +5 more
doaj   +1 more source

Endocrine disruptors in bottled mineral water : total estrogenic burden and migration from plastic bottles [PDF]

open access: yes, 2009
Background, aim, and scope Food consumption is an important route of human exposure to endocrine-disrupting chemicals. So far, this has been demonstrated by exposure modeling or analytical identification of single substances in foodstuff (e.g ...
Oehlmann, Jörg, Wagner, Martin
core   +1 more source

Pivalolactone, 2. Copolyester synthesis via interchange reactions with polypivalolactone [PDF]

open access: yes, 1993
The synthesis of copolyesters via interchange reactions of polypivalolactone (PPVL) with several compounds was studied. The synthetical procedures are two-stage melt processes: in the first stage ester bonds in the polymer chain are cleaved and new ...
Bantjes, Adriaan   +4 more
core   +9 more sources

Exposure to Bisphenol a Substitutes and Gestational Diabetes Mellitus: A Prospective Cohort Study in China

open access: yesFrontiers in Endocrinology, 2019
Background: The association of bisphenol A (BPA) and gestational diabetes mellitus (GDM) has been investigated in only a small number of studies, and research on the associations between BPA substitutes and GDM is scarce.Objective: We aimed to ...
Wenxin Zhang   +10 more
doaj   +1 more source

Neonatal exposure to xenoestrogens impairs the ovarian response to gonadotropin treatment in lambs [PDF]

open access: yes, 2015
Bisphenol A (BPA) and diethylstilbestrol (DES) are xenoestrogens which have been associated with altered effects on reproduction. We hypothesized that neonatal xenoestrogen exposure affects the ovarian functionality in lambs.
Belmonte, Norberto Miguel   +8 more
core   +2 more sources

Processing waste printed circuit boards for material recovery [PDF]

open access: yes, 2007
PURPOSE We have investigated the use of pyrolysis for the processing of waste printed circuit boards (PCBs). The aim was to make the process of separating the organic, metallic, and glass fibre fractions of PCBs much easier and therefore make ...
Hall, W.J., Williams, P.T
core   +1 more source

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