Results 171 to 180 of about 2,223,295 (291)

Insights into the biological control of the carbon isotope signatures of ancient aquatic organisms. [PDF]

Proc Natl Acad Sci U S A, 2023
Kranz SA.
europepmc   +1 more source

Carbon‐Confined Fe3C/Fe3N Janus Interfaces for Selective Nitric Oxide‐to‐Ammonia Electroreduction

Angewandte Chemie, EarlyView.
A defect‐rich, graphitic‐carbon‐confined Fe3C/Fe3N Janus catalyst integrates NO transport, adsorption/activation, and interfacial H supply for efficient nitric oxide electroreduction to ammonia. Built from earth‐abundant elements, this architecture enables high‐yield and high‐efficiency NH3 synthesis while valorizing industrial NO emissions.
Jialing Song, Ziqi Wei, Haotian Huang, Lupeng Han, Biyi Huang, Evangelina Pensa, Sam Fong Yau Li, Eslam Hamed, Fun Man Fung, Emiliano Cortés, Dengsong Zhang   +10 more
wiley   +1 more source

Phenotypic Variation in Water-Use Efficiency, Heat Tolerance, and Carbon Isotope Discrimination Across Canadian Spring Wheat Cultivars Under Climate Stress. [PDF]

Plants (Basel)
Capo-Chichi LJA, Chang SX, Hucl P, Aljarrah M, Zantinge J, Holtz M, Elakhdar A, Iqbal M, Hernandez-Ramirez G.   +8 more
europepmc   +1 more source

Redox‐Modulated σ‐Bond Reactivity in a Radical‐Anion Dimer

Angewandte Chemie, EarlyView.
A radialene‐based radical anion σ‐dimer comprising an elongated C‐C bond exhibits orthogonal stimuli responsiveness. Homolytic cleavage of the dimer to the radical state is triggered by mechanical strain and high temperature. Dimer scission is also achieved via oxidation, resulting in formation of neutral radialenes.
Sushil Ranjan Bhatta, Jonathan H. Gillen, Amaya T. Jayaweera, Fuead Hasan, Diana P. Merenkov, Hai Zhao, Sepideh Asgari, Arthur H. Winter, Christopher M. Bejger   +8 more
wiley   +1 more source

Characterization of trace element impurities and carbon isotope delta in HIPC-1, a high-purity graphite certified reference material. [PDF]

Anal Bioanal Chem
Chartrand MMG, Yang L, Methven B, Mihai O, Hélie JF, Adamowicz-Walczak A, Middlestead P, Mester Z, Meija J.   +8 more
europepmc   +1 more source

Characterization of vanillin carbon isotope delta reference materials. [PDF]

Anal Bioanal Chem, 2022
Chartrand MMG, Meija J, Hélie JF, Middlestead P, Ramalingam M, Aziz AA, Mester Z.   +6 more
europepmc   +1 more source

Directional Second Sphere Effect on CO2 Activation and Reduction by Iron Porphyrin in Aprotic and Protic Media

Angewandte Chemie, EarlyView.
Directional control within the secondary coordination sphere redefines CO2 reduction by iron porphyrins. Simply rearranging identical urea hydrogen‐bond donors modulates reactivity, revealing that optimal catalysis does not only arise from maximal intermediate stabilization, but also from directional, adaptive non‐covalent interactions that balance ...
Ashutosh Vishwakarma, Sami Essid, Sarah Bouery, Régis Guillot, Bernard Boitrel, Philipp Gotico, Marie Sircoglou, Zakaria Halime   +7 more
wiley   +1 more source

Refined chronologies of magnetochron M0r reveal asynchronous terrestrial and marine carbon isotope responses to Oceanic Anoxic Event 1a. [PDF]

Sci Adv
Lu GM, Shen ZS, Deng CL, Ogg JG, Sun MD, Li MS, Qin HF, Zhu RX, Zhou ZH, Xu YG.   +9 more
europepmc   +1 more source

Water deficit and potassium affect carbon isotope composition in cassava bulk leaf material and extracted carbohydrates. [PDF]

Front Plant Sci, 2023
Van Laere J, Merckx R, Hood-Nowotny R, Dercon G.   +3 more
europepmc   +1 more source

Activating Triplet Excitons in COFs via Layer‐Bridging Co Single Atoms for Photocatalytic H2O2 Production and Tandem C─N Coupling

Angewandte Chemie, EarlyView.
This work demonstrates a layer‐bridging coordination strategy of Co single atoms in COFs that promotes the formation and utilization of triplet excited states. The introduction of Co single atoms induces pronounced energy‐level splitting and enhanced spin–orbit coupling, facilitating the generation of 1O2 and O2•– for efficient photocatalytic H2O2 ...
Guoen Tang, Jianjun Zhang, Guijie Liang, Jinfeng Zhang, Chuanbiao Bie, Jiaguo Yu, Hermenegildo García   +6 more
wiley   +1 more source