Results 281 to 290 of about 240,361 (354)

Predation threat affects isotope ratios of planktonic consumers. [PDF]

Oecologia
Brzeziński T, Bojanowski M, Radzikowska M.   +2 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   +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

Spatio-temporal variations of strontium isotope ratios in the Mur River: a tool to support river management. [PDF]

Aquat Sci
Moser U, Čeplak B, Wagner S, Lancaster ST, Šala M, Prohaska T, Žibret G, Irrgeher J.   +7 more
europepmc   +1 more source

How Well Do We Know VPDB-Part 2: Interlaboratory Assessment of Existing δ¹³C_VPDB Reference Materials. [PDF]

Rapid Commun Mass Spectrom
Moossen H, Steur PM, Camin F, Krajnc B, Enke A, Geilmann H, Paul D, Lange M, von Rein I, Meijer HAJ.   +9 more
europepmc   +1 more source

Advancing Primary Direct Method for Absolute ¹³C/¹²C Isotope Amount Ratio Measurement of Carbon Dioxide in Air Using Infrared Absorption Spectroscopy. [PDF]

Anal Chem
Srivastava A, Fleisher AJ, Hodges JT.
europepmc   +1 more source

Restoration of deuterium marker for multi-isotope mapping of cellular metabolic activity. [PDF]

Sci Rep
Yamborko N, Schwab L, Polerecky L, Davoudpour Y, Berthelot H, Musat N, Milferstedt K, Hamelin J, Richnow HH, Vogt C, Stryhanyuk H.   +10 more
europepmc   +1 more source

Ecological Niche Changes of Two Sympatric Species (<i>Pennahia argentata</i> and <i>Larimichthys polyactis</i>) Revealed by Bulk and Compound Specific Isotope Analyses. [PDF]

Ecol Evol
Yu TS, Choi B, Lee Y, Kwak IS.
europepmc   +1 more source

Distinct demethylation pathways of rice- and fish-derived methylmercury in pregnant women revealed by compound-specific isotope analysis. [PDF]

Eco Environ Health
Lai C, Yang S, Li R, Jiang H, Abdul RM, Li P, Wang B, Feng X.   +7 more
europepmc   +1 more source

Fed the same way? Exploring the influence of breastfeeding, weaning, and childhood diet on adult sex ratios through stable isotope analysis of incremental dentine in Medieval Tuscany, Italy (11th-15th c. CE). [PDF]

PLoS One
Amaro A, Fornaciari A, Giuffra V, Kim ST, Knyf M, Szpak P, Kahlon B, Prowse TL.   +7 more
europepmc   +1 more source