Results 81 to 90 of about 694,467 (384)

Rapid and Direct Detection of Methamphetamine in Biofluids using a MXene‐Enabled Electrochemical Sensor

Advanced Science, EarlyView.
A MXene‐enhanced electrochemical sensor enables the rapid and direct detection of methamphetamine. Molecular simulations reveal that specific MXene surface functional groups act as key signal amplifiers by facilitating interfacial interactions. The sensor demonstrates high sensitivity and robust performance in complex biological matrices.
Ri Wang, Xiaofei Deng, Bo Chen, Jienan Shen, Wei Xu, Yingjie Zhu, Yi Zhang, Hui Yang   +7 more
wiley   +1 more source

Manifestly Covariant Analysis of the QED Compton Process in $e p\to e \gamma p$ and $e p \to e \gamma X$

, 2003
We calculate the unpolarized QED Compton scattering cross section in a manifestly covariant way. Our approach allows a direct implementation of the specific kinematical cuts imposed in the experiments, {\it e. g.} HERA-H1.
A. Mukherjee, Anlauf, Blümlein, C. Pisano, Callan, Courau, Drees, Glück, Glück, Glück, Glück, Ji, Kniehl, Ohnemus, Rujula, Weizsäcker   +15 more
core   +1 more source

Tissue fatty acid deposition, plasma lipid and cytokine profile in pigs fed a diet with fish oil or palm oil

Czech Journal of Animal Science, 2017
The present study tested a hypothesis concerning a favourable effect of dietary fish oil on the tissue polyunsaturated fatty acid (PUFA) deposition, and on plasma lipid and cytokine profile. Thirty-two pigs divided into two groups of 16 animals each were
Tomáš Komprda, Veronika Rozíková, Monika Vícenová, Nikola Procházková, Petra Ondráčková, Petra Pešková, Martin Faldyna   +6 more
doaj   +1 more source

Boosting Bulk‐to‐Surface Electron Transfer in CeO2 via Oxygen Vacancy Channels for Ultrafast NO2 Sensing

Advanced Science, EarlyView.
The formation of electron transport channels overcomes the sluggish electron migration caused by polaron localization, significantly enhancing surface electron concentration and reaction activity, thereby promoting the adsorption and activation of O2 and NO2.
Yucheng Ou, Fuwen Wang, Nana Xu, Haiyang Song, Tao Liu, Bing Wang, Ming Zhang, Lei Liao, Hui Xu, Haijun Liu, Qingjiang Li, Wei Wang   +11 more
wiley   +1 more source

Principled Standard Setting Requires Consideration of More Than Science (AEI-Brookings Joint Center for Regulatory Studies, Brief 00-02) Brief Amicus Curiae in Support of Respondents, Browner v. American Trucking Associations, Inc., No. 99-1257, (U.S. September 11, 2000)(with 20 Law Professors, Economists, and Scientists) [PDF]

, 2000
Summary of Argument: Throughout this proceeding, EPA has identified no policy or normative criteria to justify its NAAQS standards, thus suggesting that science alone can be used to determine the appropriate air quality standard.
Coglianese, Cary, Marchant, Gary, Wiener, Jonathan B.   +2 more
core   +1 more source

Stereospecific Transition‐Metal‐Free Alkylation of Chiral Non‐Racemic Secondary Tosylates with Cyanohydrins: Convenient Access to Enantiomerically Enriched α‐Tertiary Ketones

Angewandte Chemie, EarlyView.
A stereospecific, transition‐metal‐free SN2 alkylation of cyanohydrins with chiral non‐racemic secondary tosylates is reported, providing efficient access to enantioenriched α‐tertiary ketones. The method exhibits broad substrate scope, operational simplicity, and excellent stereospecificity, including stereoconvergent reactions of E/Z mixtures of ...
Jinjin Ma, Hui Li, Jadab Majhi, P. Andrew Evans   +3 more
wiley   +2 more sources

Research of real-time adaptive scheduling algorithm for across segments delay in EPA

Gong-kuang zidonghua, 2013
In view of problem that EPA network only supports real-time data transmission inside segments but not across segments, a real-time adaptive scheduling algorithm for across segments delay in EPA was proposed. Transmission process of across segments in EPA
JIANG Xiu-zhu, XU Zhao, LI Xiang-dong, YUAN Wei-chen, FENG Dong-qin   +4 more
doaj   +1 more source

Integrating tools for non-targeted analysis research and chemical safety evaluations at the US EPA

Journal of Exposure Science and Environmental Epidemiology, 2017
Tens-of-thousands of chemicals are registered in the U.S. for use in countless processes and products. Recent evidence suggests that many of these chemicals are measureable in environmental and/or biological systems, indicating the potential for ...
J. Sobus, J. Wambaugh, K. Isaacs, Antony J. Williams, Andrew Mceachran, A. Richard, C. Grulke, E. Ulrich, J. Rager, M. Strynar, Seth R. Newton   +10 more
semanticscholar   +1 more source

ML Workflows for Screening Degradation‐Relevant Properties of Forever Chemicals

Advanced Science, EarlyView.
The environmental persistence of per‐ and polyfluoroalkyl substances (PFAS) necessitates efficient remediation strategies. This study presents physics‐informed machine learning workflows that accurately predict critical degradation properties, including bond dissociation energies and polarizability.
Pranoy Ray, Andrew R. Castillo, Manoj Kolel‐Veetil, Surya R. Kalidindi   +3 more
wiley   +1 more source

Normalizing Novelty: Regulating Biotechnological Risk at the U.S. EPA [PDF]

, 2000
Drs.
Carr, Susan, Levidow, Les
core   +1 more source