Results 171 to 180 of about 64,264 (235)

How to Apply Compound-Specific Isotope Analysis to Complex Environmental Samples

CHIMIA, 2018
Violaine Ponsin, Timothy E. Buscheck, Daniel Hunkeler   +2 more
doaj   +1 more source

δ¹³C and δ¹⁵N Values of Residues Provide Insights Into Identification of the Explosive Source. [PDF]

Rapid Commun Mass Spectrom
Ehleringer JR, Howa JD.
europepmc   +1 more source

Atomically Dispersed Cobalt on Ionic Carbon Nitrides for Selective and Efficient Nitrate Electroreduction to Ammonia

Angewandte Chemie, EarlyView.
By exploiting the structural benefits of PHI, we synthesized CoPHI with atomically dispersed cobalt sites at high density. This architecture enables efficient nitrate ion adsorption, promotes water dissociation, and enhances *H generation on the catalyst surface, thereby significantly improving electrochemical nitrate reduction performance.
Nana Gao, Minjuan Guo, Haijian Tong, Guoyu Hou, Jingwen Ba, Xiaoyu Zhang, Ruixin Zhang, Hui Zhang, Xianwei Fu, Leonardo Cancellara, Nadezda V. Tarakina, Yu Zhang, Tianxi Liu, Christian Mark Pelicano, Zhihong Tian   +14 more
wiley   +1 more source

Clumped Isotope Temperature Reconstruction Using Stalagmite Drip Cups. [PDF]

Rapid Commun Mass Spectrom
Umbo S, Box M, Intveld A, Longman J, Modestou S, Carolin SA, James DH, Martínez-García A, Lope CP, Brenner M, Hodell D, Breitenbach SFM.   +11 more
europepmc   +1 more source

Rh‐Catalyzed Chemodivergent Parallel Kinetic Resolution and Desymmetrization of Enynes and Dienynes with Acrylamides

Angewandte Chemie, EarlyView.
Rh‐catalyzed chemodivergent parallel kinetic resolution of racemic 1,6‐enynes with α‐fluoroacrylamides or mixtures of different acrylamides proceeded via [2+2+2] cycloaddition and C–H alkylation to afford structurally and stereochemically distinct products with high selectivity under mild conditions.
Shintaro Hamada, Julong Jiang, Yu Sato, Takashi Yamazaki, Satoshi Maeda, Ken Tanaka   +5 more
wiley   +1 more source

Stable Carbon and Oxygen Isotope Analysis of Carbonates and DIC Using the Delta Ray Isotope Ratio Infrared Spectrometer (IRIS): Precise and Accurate Measurements Applying a 3-Point Calibration and Standard Bracketing. [PDF]

Rapid Commun Mass Spectrom
Hansen M, Brettschneider J, Vonhof H, Scholz D.   +3 more
europepmc   +1 more source

Intramolecularly Labeled Reference Standards of Sulfamethoxazole for Fragment-Specific Isotope Analysis by Electrospray Ionization Orbitrap Mass Spectrometry. [PDF]

J Am Soc Mass Spectrom
Canavan A, Dirr C, Elsner M.
europepmc   +1 more source

Geographical traceability of bacteria based on a systematic stable isotope analysis method. [PDF]

Appl Microbiol Biotechnol
Wang W, Zhao B, Cai Z, Jie Z, Feng L, Hu C, Guo H, Li Y, Deng X, Zhu J, Mei H, Ye J.   +11 more
europepmc   +1 more source

Covalent Organic Framework–Carbon Nanotube Core–Shell Nanohybrids for Enhanced Catalytic Site Utilization of Molecular Catalysts in CO2 Electroreduction

Angewandte Chemie International Edition, EarlyView.
Covalent organic framework–carbon nanotube (COF–CNT) core–shell nanohybrids are developed as an efficient platform to enhance the site utilization of molecular catalysts for electrochemical CO2 reduction. The well‐defined nanostructure promotes catalytic site accessibility, achieving CO turnover frequencies among the highest reported to date.
Liang Yao, Andrés Rodríguez‐Camargo, Roman Guntermann, Fabian Heck, Samuel Van Gele, Hugo Vignolo‐González, Viola Duppel, Thomas Bein, Bettina V. Lotsch   +8 more
wiley   +1 more source

Carbon and Nitrogen Stable Isotopic Discrimination Factors Between Diet and Feces in Wild Giant Pandas. [PDF]

Biology (Basel)
Long G, Wu Y, Huang L, Nie Y, Han H.
europepmc   +1 more source