Results 61 to 70 of about 240,361 (354)

Mass spectrometric measurement of hydrogen isotope fractionation for the reactions of chloromethane with OH and Cl [PDF]

Atmospheric Chemistry and Physics, 2018
Chloromethane (CH3Cl) is an important provider of chlorine to the stratosphere but detailed knowledge of its budget is missing. Stable isotope analysis is a potentially powerful tool to constrain CH3Cl flux estimates.
F. Keppler, F. Keppler, F. Keppler, E. Bahlmann, E. Bahlmann, M. Greule, M. Greule, H. F. Schöler, J. Wittmer, J. Wittmer, C. Zetzsch, C. Zetzsch   +11 more
doaj   +1 more source

Provenance does matter: links between winter trophic segregation and the migratory origins of European robins [PDF]

, 2016
Amongst migratory species, it is common to find individuals from different populations or geographical origins sharing staging or wintering areas.
Bearhop, Stuart,, Campos, Ana R.,, Catry, Paulo,, Granadeiro, José Pedro,, Lund University., Neto, Júlio M.,, Newton, Jason,, Ramos, Jaime,   +7 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Distinguishing glutamic acid in foodstuffs and monosodium glutamate used as seasoning by stable carbon and nitrogen isotope ratios

Heliyon, 2018
Recently, a number of consumers have begun to appreciate more natural ingredients and have become less willing to consume monosodium glutamate (MSG) as a seasoning.
Kazuhiro Kobayashi, Masaharu Tanaka, Soichi Tanabe, Yoichi Yatsukawa, Mitsuru Tanaka, Takuya Suzuki   +5 more
doaj   +1 more source

Geographical Origin Identification of Tequila Based on Multielement and Stable Isotopes

Journal of Food Quality, 2021
To explore the regional characteristics of multielement and stable isotopes in tequila and the viability of tracing the geographical origin, both inductively coupled plasma mass spectrometry (ICP-MS) and stable isotope ratio mass spectrometry (IRMS) were
Jian Zhang, Yiqian Ma, Feilong Shao, Yuanyu Lu, Libo Zhu, Xiansong Xu   +5 more
doaj   +1 more source

Nitrogen isotope analysis of ammonium and glycine [PDF]

, 2005
Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools.
Norlin, Elin
core  

Diet uniformity at an early farming community in northwest Anatolia (Turkey) : carbon and nitrogen isotope studies of bone collagen at Aktopraklik [PDF]

, 2017
Aktopraklık is a settlement site composed of three areas (A–C) in the Marmara region of northwest Anatolia, with phases of occupation that date to the Late Neolithic and Early Chalcolithic periods, mid-seventh to mid-sixth millennium bc (ca.
Alpaslan-Roodenberg, Songül, Budd, Chelsea, Galik, Alfred, Karul, Necmi, Lillie, Malcolm, Schulting, Rick   +5 more
core   +1 more source

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

An exploration of isotopic variability in feathers and claws of Lesser Kestrel Falco naumanni chicks from southern Sicily

Avocetta, 2016
Stable isotopes are nowadays commonly used in the study of many key features of avian ecology. However, the adequate choice of what isotopic ratio to consider and what tissues to sample for assessing specific questions may be tricky.
Michelangelo Morganti, Alessandro Franzoi, Luana Bontempo, Maurizio Sarà   +3 more
doaj   +1 more source

Confirmation of the Dietary Background of Beef from its Stable Isotope Signature [PDF]

, 2009
End of project reportConsumers are increasingly demanding information on the authenticity and source of the food they purchase. Molecular DNA-based technology allows animal identification, but without certification or a “paper-trail” but does not provide
Bahar, Bojlul, Begley, I.S., Moloney, Aidan P, Monahan, Frank J, Schmidt, Olaf, Scrimgeour, C.M.   +5 more
core