Results 181 to 190 of about 4,052,823 (334)

A Unified Method for Triple Oxygen Isotope Analysis of Sulfate, Water, and Organics. [PDF]

Anal Chem
Zahnow F, Feng D, Pack A, Bajnai D, Herwartz D.   +4 more
europepmc   +1 more source

Seasonal Variations in Triple Oxygen Isotope Ratios of Precipitation in the Western and Central United States. [PDF]

Paleoceanogr Paleoclimatol, 2023
Aron PG, Li S, Brooks JR, Welker JM, Levin NE.   +4 more
europepmc   +1 more source

Cobalt‐Catalyzed C─N Bond Formation via Metal‐Hydride Hydrogen Atom Transfer (MHAT)

Angewandte Chemie, EarlyView.
Cobalt‐catalyzed metal‐hydride hydrogen atom transfer (Co‐MHAT) converts simple alkenes into C─N bonds under mild, near‐neutral conditions. A shared Co─H‐initiated radical/organocobalt intermediate is channeled into radical trapping, radical‐polar crossover, or radical ligand transfer, unifying hydroamination, hydroazidation, hydroamidation, and remote
Arman Khosravi, Ming‐Yu Ngai
wiley   +2 more sources

Evapotranspiration partitioning through in-situ oxygen isotope measurements in an oasis cropland

, 2016
X. Wen, Bin Yang, Xiao-Min Sun, X. Lee
semanticscholar   +1 more source

Fluorination of Silver Phosphate in Nickel Reaction Vessels for Triple Oxygen Isotope Analysis. [PDF]

Rapid Commun Mass Spectrom
Wostbrock JAG, Yarian D, Chiaravalloti I, Moller SR, Blake RE.   +4 more
europepmc   +1 more source

Hydrogen Peroxide Formation during Ozonation of Olefins and Phenol: Mechanistic Insights from Oxygen Isotope Signatures. [PDF]

Environ Sci Technol, 2023
Houska J, Stocco L, Hofstetter TB, Gunten UV.   +3 more
europepmc   +1 more source

Expanded applicability of the triple oxygen isotope composition of phytoliths as an indicator of atmospheric relative humidity. [PDF]

Proc Natl Acad Sci U S A
Alexandre A, Aleman J, Guo M, Au Yang D, Havas R, Webb E.   +5 more
europepmc   +1 more source

Optimization framework of sediment phosphate oxygen isotope pretreatment method based on large-scale application: A case study of Fuyang River basin. [PDF]

Heliyon, 2023
Yang J, Du C, Jin X, Lu H, Chan Q, Zhang J, Ma H, Zeng H, Li S.   +8 more
europepmc   +1 more source

Second‐Sphere Aromatic Substitutions That Tune H‐Atom Transfer Reactivity Observed for a Series of S = 1 Nonheme FeIV=O Complexes: An Enthalpy‐Entropy Compensation Effect

Angewandte Chemie, EarlyView.
A series of oxoiron(IV) complexes was synthesized to determine the impact of electronically tuned aromatic substitution in the secondary sphere of the ligand. Despite possessing identical electronic properties, they show significant differences in C─H oxidation reactions.
Abhishek Das, Jin Xiong, Victor G. Young Jr., Yisong Guo, Marcel Swart, Lawrence Que Jr.   +5 more
wiley   +1 more source

Controlled Hydrogen Delivery by Single‐Atom Ru Accelerates Electrocatalytic Ammonia Synthesis

Angewandte Chemie, EarlyView.
Single Ru atoms anchored on Co3O4 guide reactants along a hydrogen‐rich surface pathway, enabling efficient and selective conversion of NO to NH3. By linking atomic design to catalytic performance, this strategy clarifies the reaction mechanism and offers a versatile platform for engineering oxide catalysts for electrochemical ammonia synthesis ...
Zheng Liu, Xingchi Li, Zhenggang Xue, Jiayi Liu, Zhenlin Wang, Evangelina Pensa, Donglin Han, Jialing Song, Haiyan Duan, Chaoqi Zhang, Lupeng Han, Ming Xie, Yongjie Shen, Wenqiang Qu, Emiliano Cortes, Dengsong Zhang   +15 more
wiley   +2 more sources