Results 221 to 230 of about 34,135 (304)

Assessment of decadal changes in coastal nitrogen sources in NW Spain with stable isotopes in macroalgae and mussels. [PDF]

PLoS One
Bode A, García-Seoane R, Varela Z, Viana IG.   +3 more
europepmc   +1 more source

Dual Chemical Looping/Catalytic Process for Alkylation of Benzene With Ethane and Propane Yielding Ethylbenzene and Cumene Over Copper‐Containing Mordenite

Angewandte Chemie, EarlyView.
We report a dual chemical looping/catalytic process coupling alkane dehydrogenation with aromatic alkylation over Cu‐mordenite, yielding up to 25% alkylated aromatics with >95% selectivity per cycle. In situ NMR, FTIR spectroscopy, and DFT show alkylation proceeds via a π‐bound Cu(I)–olefin intermediate and Brønsted acid sites.
Florent J. Dubray, Yu‐Hsun Wang, Mikalai A. Artsiusheuski, Jiawei Guo, Rene Verel, Ambarish Kulkarni, Jeroen A. van Bokhoven, Vitaly L. Sushkevich   +7 more
wiley   +2 more sources

UHRMS Formula Assignment: Diophantine-Based Recalibration Yields Lorentzian Mass Error Distribution as the Limiting Factor. [PDF]

J Am Soc Mass Spectrom
Safaridehkohneh N, Ott A.
europepmc   +1 more source

Nonheme Fe Enzyme‐Catalyzed Enantiodivergent Nitrogen Migration: Directed Evolution and Computational Study of Isopenicillin N Synthases for Biocatalytic Synthesis of Arylglycines

Angewandte Chemie, EarlyView.
Nonheme Fe enzyme isopenicillin N synthase was reprogrammed and evolved as an efficient nitrogen migratase IPNSNim, converting diverse azanyl esters to valuable l‐arylglycines with up to 16 000 TTN and 97:3 e.r. IPNSNim and ACCONim allowed enantiodivergent preparation of both l‐ and d‐arylglycines.
Ken Lin, Liu‐Peng Zhao, Shengchun Wang, Huichong Liu, Yu Zhang, Binh Khanh Mai, Peng Liu, Yang Yang   +7 more
wiley   +2 more sources

Heavy metals and natural radioactive isotopes in phosphate and compound fertilisers and their impact on human health. [PDF]

Sci Rep
Łukaszek-Chmielewska A, Rachwał M, Rakowska J, Piec R, Podleśna A, Piotrowska B, Isajenko K, Mietelski JW, Kierepko R, Kosturkiewicz B.   +9 more
europepmc   +1 more source

Carbon (δ¹³C) and nitrogen (δ¹⁵N) isotope data from bone collagen from archaeological fauna and modern plants in the isthmus area, including Costa Rica and Panama.

Ashley E. Sharpe (8681484), Nicole E. Smith-Guzmán (21419402), Claudia Patricia Díaz Pérez (22574457), Luis Alberto Sánchez Herrera (22574460), Diana Carvajal-Contreras (22574463), Jason Curtis (7007948), Jonathan D. Cybulski (14173614), Benoit Desjardins (22574466), Ilean Isaza-Aizpurúa (22574469), George Kamenov (1333776), Yajaira Núñez-Cortés (22574472)   +10 more
openalex   +1 more source

Water use efficiency of Cupressus gigantea is higher in mountain slope habitats compared to riverside habitats. [PDF]

PLoS One
Jiang Y, Luan L, Zuo Y, Liu S, He Q, He J, Wu R, Jiang G, Liu M.   +8 more
europepmc   +1 more source

Global trends in nutrient dynamics during the Ediacaran-Cambrian period as revealed by nitrogen and carbon isotope trends

, 2014
Antonia Gamper
openalex   +1 more source

A High-Precision Analytical Technique for Dissolved N₂ Isotopes in Aquatic Systems: Biogeochemical Applications and Determination of Solubility Equilibrium Isotope Effects. [PDF]

Rapid Commun Mass Spectrom
McPaul K, Wankel SD, Seltzer AM.
europepmc   +1 more source

Report on the mini-symposium 'Application of stable isotope ratio for understanding nitrogen dynamics in soil-plant system'(Member's plaza)

, 2013
Kazunori Minamikawa, Yosuke Yanai, Kazumichi Fujii, Yasuhiro Nakajima, Yoshiyuki Inagaki, Kazuo Isobe   +5 more
openalex   +1 more source