Results 141 to 150 of about 71,706 (273)

Real‐Time Kinetic Monitoring of Dental Composite Photopolymerization by Photo‐DSC

Journal of Applied Polymer Science, EarlyView.
Real time photo‐DSC was used to investigate polymerization kinetics of Bis‐GMA/TEGDMA dental composites. The study thoroughly examines how photo‐initiator type, concentration, silica filler content, and moisture affect conversion and curing rate. Results highlight optimal initiator systems, filler effects, and moisture tolerance, providing valuable ...
R. Latoui, D. Bouzid, M. Taam, F. Collas, R. Brunel, O. Boyron   +5 more
wiley   +1 more source

Atomically Thin Sieves: Two‐Dimensional Materials for Membrane Separation

Advanced Physics Research, EarlyView.
Atomically thin membranes derived from 2D materials overcome the inherent selectivity‐permeability trade‐off in conventional separation technologies. This perspective elucidates transport mechanisms for gases, water, and ions, surveys fabrication strategies including top‐down pore engineering and bottom‐up synthesis, highlights recent experimental and ...
Yiran Gong, Pengzhan Sun, Yu Ji
wiley   +1 more source

Glyoxylic‐Acetal‐Based Gel‐Polymer Electrolytes for Lithium‐Ion Batteries

Batteries &Supercaps, Volume 8, Issue 3, March 2025.
A safe electrolyte based on tetraethoxyglyoxal (LE) is combined with a methacrylate polymer matrix. The resulting gel‐polymer electrolyte (GPE) exhibits an increased flash point, suitable ionic conductivity, and a stable performance in lithium‐ion battery cells.
Christian Leibing, Simon Muench, Juan Luis Gómez Urbano, Ulrich S. Schubert, Andrea Balducci   +4 more
wiley   +1 more source

Sprayable low density ablator and application process [PDF]

, 1978
A sprayable, low density ablative composition is described consisting esentially of: (1) 100 parts by weight of a mixture of 25-65% by weight of phenolic microballoons, 0-20% by weight of glass microballoons, 4-10% by weight of glass fibers, 25-45% by ...
Brown, E. L., Carter, J. M., Hill, W. E., King, H. M., Schuerer, P. H., Sharpe, M. H., Simpson, W. G., Webb, D. D.   +7 more
core   +1 more source

Synthesis of Oligo‐Sulfonimidates by Exponential Growth via Sulfur‐Phenolate Exchange Reactions

ChemistryEurope, EarlyView.
A highly flexible iterative exponential growth strategy is used in combination with the sulfur‐phenolate exchange reaction to develop sequence‐defined oligosulfonimidates (16 mer). Combining this with sulfur‐fluorine exchange‐based iterative step growth, a bespoke 20 mer (Mw = 8.5 kDa) can be synthesized.
Yu Han, Dong‐Dong Liang, Silke Heskamp, Bo Chen, Fedor M. Miloserdov, Han Zuilhof   +5 more
wiley   +1 more source

BPA-free? Exploring the reproductive toxicity of BPA substitutes BPS and BPF on endometrial decidualization

Ecotoxicology and Environmental Safety
Bisphenol A (BPA) exposure is linked to multiple adverse health outcomes, prompting the rise of ''BPA-free'' products. However, substitutes like Bisphenol S (BPS) and Bisphenol F (BPF) are equally prevalent, with detection frequencies and concentrations ...
Yao Xiong, Shaoyuan Xu, Ziwei Wang, Zihan Wang, Shuwei Li, Ming Zhang, Yuanzhen Zhang   +6 more
doaj   +1 more source

Dynamics and Conformational Stability of Chiral Bay‐Phenolate‐Substituted Twisted Octaazaperopyrenedioxides (OAPPDOs)

Chemistry – A European Journal, EarlyView.
Chiral octaazaperopyrenedioxide (OAPPDO) fluorophores were obtained by functionalizing with BINOL and related fragments bridging the bay position. They possess conformational flexibility but remarkable thermal stability with respect to racemization of the central chromophore, which allowed the study of their chiroptical properties, including circular ...
Bastian Rojas‐Deij, Lars Schneider, Tim Bruckhoff, Robert Eichelmann, Philipp Rohrmann, Raphael Candalh, Joachim Ballmann, Felix Deschler, Lutz H. Gade   +8 more
wiley   +1 more source

Pesticide Contamination in the Hair of Children From Colonia San Juan, a Rural Community in Paraguay

Drug Testing and Analysis, EarlyView.
Hair analysis in children from a rural community in Paraguay reveals exposure to organophosphates, pyrethroids, neonicotinoids, fungicides, herbicides, and endocrine disruptors, highlighting the urgent need for stricter environmental protections and preventive health measures. ABSTRACT Chronic exposure to pesticides can cause carcinogenic, reproductive,
Stela Benitez Leite, Alba Iglesias‐Gonzalez, Mirta Noemí Mesquita, María Luisa Macchi, Robin Mesnage, Brice M. R. Appenzeller   +5 more
wiley   +1 more source

Optimized Method for Quantifying Bisphenols in Bottled Water and PET/rPET Matrices

Foods
The growing use of plastics in food packaging has raised concerns about chemical migration into consumables, posing potential health risks. Ensuring the safety of packaging materials is a critical public health priority.
Fabiana Di Duca, Paolo Montuori, Elvira De Rosa, Immacolata Russo, Raffaele Palladino, Stefano Scippa, Giuseppe Dadà, Maria Triassi, Sergi Díez   +8 more
doaj   +1 more source

Comparison of the toxicokinetics of daidzein and bisphenol A in pregnant and non-pregnant DA/Han rats [PDF]

Potentially adverse human and environmental effects due to hormone mimicry of environmental estrogens are a matter of current concern. Environmental estrogens belong to the socalled endocrine active compounds (EAC) and may alter signalling processes of ...
Degen, Gisela H., Selinski, Silvia
core