Results 81 to 90 of about 612,314 (336)

Carbon isotope anomaly in the major plant C-1 pool and its global biogeochemical implications [PDF]

, 2004
We report that the most abundant C-1 units of terrestrial plants, the methoxyl groups of pectin and lignin, have a unique carbon isotope signature exceptionally depleted in C-13.
Hamilton, JTG, Harper, DB, Kalin, R., Keppler, F., McRoberts, WC   +4 more
core   +1 more source

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 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

Analytical modelling of stable isotope fractionation of volatile organic compounds in the unsaturated zone [PDF]

, 2011
Analytical models were developed that simulate stable isotope ratios of volatile organic compounds (VOCs) near a point source contamination in the unsaturated zone. The models describe diffusive transport of VOCs, biodegradation and source ageing.
Abriola, Baehr, Bouchard, Bouchard, Bouchard, Bouchard, Broholm, Cerling, Christophersen, Clark, Conant, Craig, Daniel Bouchard, Daniel Hunkeler, Davis, Davis, Elsner, Fabien Cornaton, Falta, Franzmann, Gaganis, Grathwohl, Harrington, Hers, Hoff, Hohener, Hohener, Hunkeler, Hunkeler, Jin, Jost, Jury, Karapanagioti, Kiss, Kuder, Lahvis, Meckenstock, Millington, Moldrup, Ostendorf, Parker, Pasteris, Patrick Höhener, Schmidt, Schwarzenbach, Schüth, Sherwood Lollar, Slater, Smith, Van de Steene, Wang, Werner, Werner   +52 more
core   +3 more sources

Stable carbon isotope ratio of submerged freshwater macrophytes1,1 [PDF]

Limnology and Oceanography, 1982
The stable carbon isotope ratio of submerged freshwater macrophytes is substantially higher than that of terrestrial C3 plants. This difference is consistent with the high diffusion resistance to inorganic carbon flux in the aquatic medium but also appears to be a function of the more negative carbon ratio of the dissolved inorganic carbon available to
Bruce D. LaZerte, James E. Szalados
openaire   +1 more source

The Terminal Domains of Collagen‐Like Silk Direct Molecular Interactions and Liquid–Liquid Phase Separation‐Mediated Material Assembly

Advanced Functional Materials, EarlyView.
Terminal domains of recombinant collagen‐like silk regulate hierarchical self‐assembly across molecular and material scales. We show that terminal domains of collagen‐like silk enhance triple‐helix stability and drive liquid–liquid phase separation, enabling reversible formation of fibers and self‐healing films.
Mengjie Shen, Daniil Astapov, Nur Alia Oktaviani, Mami Goto, Keiji Numata, A. Sesilja Aranko   +5 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

Accurate quantification of selenoproteins in human plasma/serum by isotope dilution ICP-MS : focus on selenoprotein P [PDF]

, 2017
Acknowledgements The research leading to these results was funded by the EMRP Joint Research Project “Metrology for metalloproteins” (HLT-05 2012). The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union.Peer ...
Busto, M. Estela del Castillo, Cuello-Nunez, Susana, Deitrich, Christian L., Fisicaro, Paola, Goenaga-Infante, Heidi, Konopka, Anna, Lehmann, Wolf D., Oster, Caroline, Raab, Andrea   +8 more
core   +1 more source

Stable Isotope Ratios in Hair and Teeth Reflect Biologic Rhythms

PLoS ONE, 2007
Biologic rhythms give insight into normal physiology and disease. They can be used as biomarkers for neuronal degenerations. We present a diverse data set to show that hair and teeth contain an extended record of biologic rhythms, and that analysis of these tissues could yield signals of neurodegenerations.
O. Appenzeller, C. Qualls, F. Barbic, R. Furlan, A. Porta   +4 more
openaire   +4 more sources

Engineering Hydrogen‐Down Water Configurations for Ampere‐Level Electrochemical CO2 Reduction to Formate

Advanced Functional Materials, EarlyView.
Electrochemical CO2 reduction (ECR) to formate is a promising route for sustainable chemical production. Herein, we report the synthesis catalysed byBi‐HfO2@C. The AIMD simulations, DFT calculations, and in situ SEIRAS measurements show that the modification of HfO2 on the Bi surface steers the interfacial water to adopt a favorable hydrogen‐down (OH2↓)
Xiao‐Dong Guo, Shao‐Qing Liu, Jia‐Yi Wu, Qi‐Rui Wen, Xiaoxiao Wei, Shu‐Wen Wu, Xian‐Zhu Fu, Jing‐Li Luo   +7 more
wiley   +1 more source