Results 161 to 170 of about 3,466,743 (324)
American Journal of Industrial Medicine, EarlyView.ABSTRACT Introduction Use of aqueous film‐forming foam (AFFF) is a source of exposure to per‐ and polyfluoroalkyl substances (PFAS) for firefighters working in aircraft rescue and firefighting (ARFF) settings. However, data characterizing the association between serum PFAS concentrations and exposure risk factors for ARFF firefighters are limited ...
Miriam M. Calkins +19 more
wiley +1 more source
Radical‐Based On‐Surface Transformation of Nonplanar Aromatics Into Nonbenzenoid Nanographenes
Angewandte Chemie, EarlyView.Formation of radicals in nonplanar hydrocarbons through thermally induced dehydrogenation leads to molecular transformation via intramolecular radical‐based cyclization and dimerization, leading to formation of nonbenzenoid nanographenes. ABSTRACT On‐surface synthesis has emerged as a powerful tool for atomically precise C─C bond formation, enabling ...
Daniel Rothhardt +8 more
wiley +2 more sources
Angewandte Chemie, EarlyView.A Pd‐catalyzed regioselective synthesis of benzylsilanols from Kobayashi‐type reagents has been developed through a mechanistically distinct approach involving 1,4‐Pd migration followed by intramolecular transmetalation. The reaction can be combined with various prior transition‐metal‐catalyzed processes and the resulting benzylsilanols have been ...
Ryo Shintani, Keisuke Tachibana
wiley +2 more sources
Communications Earth & EnvironmentHigh-altitude hydrothermal systems provide laboratories for understanding microbial adaptation to extreme conditions. Here we investigated thermodynamic controls on metabolic transitions in Lirima hydrothermal system (Chile, 4000 meters above sea level ...
Pablo Paquis +13 more
doaj +1 more source
Recent benthic foraminifera from the Tagus Prodelta and Estuary, Portugal: microhabitats, assemblage composition and stable isotopes [PDF]
, 2006 Abrantes, Fatima G. +4 more
core +1 more source
Angewandte Chemie, EarlyView.Anionic high‐spin iron(II) imido complexes are catalysts for the hydrogen isotope exchange (HIE) reaction with pyridine as the substrate. The alkali metal counter‐cation plays critical roles in activating the substrate and facilitating deuteration. These complexes catalyze site‐selective α‐, α,β,γ‐, and β,γ‐deuteration of pyridine, where the counter ...
Bin Feng +6 more
wiley +2 more sources
Changes to Carbon Isotopes in Atmospheric CO2 Over the Industrial Era and Into the Future. [PDF]
Global Biogeochem Cycles, 2020 Graven H, Keeling RF, Rogelj J.
europepmc +1 more source
Room‐Temperature Gas‐Phase CO2‐to‐C3 Coupling by a 4f‐Aromatic Cluster
Angewandte Chemie, EarlyView.We engineered a 4f metalla aromatic cluster, PrB2C2−, that enables efficient sequential C−C coupling with CO2 at room temperature, yielding a linear C3 backbone. This system provides a complete theoretical catalytic cycle and establishes a new design principle for lanthanide mediated CO2 activation.
Feng‐Xiang Zhang +7 more
wiley +2 more sources
A Revised Model for Muscarine Biosynthesis Involving Lysine Trimethylation
Angewandte Chemie, EarlyView.The fatal mushroom toxin l‐(+)‐muscarine is one of the most prominent natural products. We elucidated its biosynthetic origin in the sweating mushroom Collybia rivulosa based on incorporation of stable isotope‐labeled compounds and extensive mass spectrometric analyses.
Sebastian Dörner +4 more
wiley +2 more sources