Results 171 to 180 of about 37,366 (283)

Factors Influencing the Oxygen Isotopes of Grape Berry Water: Some Remarks. [PDF]

Int J Food Sci
Rossi M, Boschetti T, Selmo E, Caraffini F, Ramigni S, Iacumin P.   +5 more
europepmc   +1 more source

Garnet secondary ion mass spectrometry oxygen isotopes reveal crucial roles of pulsed magmatic fluid and its mixing with meteoric water in lode gold genesis. [PDF]

Proc Natl Acad Sci U S A, 2022
Fan GH, Li JW, Valley JW, Scicchitano MR, Brown PE, Yang JH, Robinson PT, Deng XD, Wu YF, Li ZK, Gao WS, Li SY, Zhao SR.   +12 more
europepmc   +1 more source

Catalytic Enantioselective Multicomponent Reactions of Sulfoxonium Ylides Enabled by a Formal Rearrangement—A Versatile Entry to Enantioenriched α‐Sulfanyl Carbonyl Compounds

Angewandte Chemie, EarlyView.
A catalytic network embedding a formal rearrangement enables the first catalytic enantioselective multicomponent reaction (MCR) of sulfur ylides. In the presence of a bulky chiral phosphoric acid, the reaction combines sulfoxonium ylides, aldehydes and thiols, and affords synthetically versatile β‐hydroxy‐α‐sulfanyl carbonyl compounds in ...
Nicolò Santarelli, Pietro Pecchini, Nunzio Matera, Andrea Pellegrini, Riccardo Fabbri, Irati Celada Cubero, Leire Navarro Rubio, Cristina Di Pietro, Andrea Mazzanti, Mariafrancesca Fochi, Luca Bernardi   +10 more
wiley   +2 more sources

Can Oxygen Isotopes in Tree Rings Be Used to Detect Stomatal Responses to Global Change? [PDF]

Glob Chang Biol
Carter I, Brienen R, Gloor M.
europepmc   +1 more source

Bifurcation of *COOH Pathway Determines HCOOH Formation in CO2 Electroreduction on Bismuth

Angewandte Chemie, EarlyView.
Driven by the mechanistic debate of Bi‐catalyzed CO2‐to‐HCOOH conversion, ambiguity remains regarding true reaction pathways. To resolve this, we combined constant‐potential AIMD simulations with spectroscopic evidence to analyze the competitive pathways.
Hyun Dong Jung, Jiawei Deng, Yanbo Hua, Kun Jiang, Seoin Back   +4 more
wiley   +2 more sources

Monsoon differences in South Asia and East Asia during the penultimate deglaciation revealed by speleothem oxygen isotopes. [PDF]

Sci Rep
Zhao J, Cui J, Pan L, Luo Q, Dong X, Wang J, Wang K, Cheng H.   +7 more
europepmc   +1 more source

Facet‐Dependent Water Inhibition of Alkanol Dehydration on TiO2 via Distinct Water–Alkanol Complexes

Angewandte Chemie, EarlyView.
Water inhibits alkanol dehydration on TiO2 through facet‐dependent manners via distinct IPA‐water complexes. On TiO2(001), water forms a strongly hydrogen‐bonded isopropoxide–H2O complex that readily dominates the surface and substantially elevates the activation barrier, whereas on TiO2(101), water weakly hydrogen‐bonds to molecular IPA, resulting in ...
Wenda Hu, Haiting Cai, Anthony Savoy, Jinshu Tian, Sungmin Kim, Fan Lin, Junrui Li, Hao Xu, Yiqing Wu, Zihao Zhang, Nicholas Jaegers, Huamin Wang, Feng Gao, Jianzhi Hu, Yong Wang   +14 more
wiley   +2 more sources

Graphdiyne as a Hole‐Transport Channel in Carbon Nitride Heterojunctions for Synergistic CO2 Reduction and γ‐Butyrolactone Synthesis

Angewandte Chemie, EarlyView.
A fully metal‐free heterojunction constructed from graphdiyne (GDY) and polymeric carbon nitride (PCN) enables efficient coupling of CO2 reduction and tetrahydrofuran oxidation. GDY serves as a hole‐transport channel, establishing a built‐in electric field that drives spatial charge separation. The optimized catalyst achieves near‐unity selectivity for
Xuan Zhang, Junqi Chai, Chong Wang, Wei Lin, Jing Tang, Oleksandr Savateev, Jimmy C. Yu, Jiajia Cheng   +7 more
wiley   +2 more sources

Mass-independent fractionation of oxygen isotopes during high-temperature condensation in cosmochemical plasmas. [PDF]

Proc Natl Acad Sci U S A
Asset N, Chaussidon M, Lombardi G, Villeneuve J, Tartèse R, Mostefaoui S, Robert F.   +6 more
europepmc   +1 more source

The relationship between CM and CO chondrites: Insights from combined analyses of titanium, chromium, and oxygen isotopes in CM, CO, and ungrouped chondrites. [PDF]

Geochim Cosmochim Acta, 2021
Torrano ZA, Schrader DL, Davidson J, Greenwood RC, Dunlap DR, Wadhwa M.   +5 more
europepmc   +1 more source