Results 41 to 50 of about 56,968 (297)

(Table 1) Sample information and stable hydrogen isotope composition of long-chain n-alkanes and weighted mean average stable hydrogen isotope composition [PDF]

, 2016
WMA: Weighted mean average stable hydrogen isotope composition (WMA). Standard deviation: 1 Sigma. a: Analysed sediment interval in cm below sea floor. b: Number of replicate n-alkane hydrogen isotope analyses.
Badewien, Tanja, Jürgen Rullkötter (6975452), Rullkötter, Jürgen, Angela Vogts (6981206), Schefuß, Enno, Vogts, Angela, Enno Schefuß (6886100), Tanja Badewien (6981209)   +7 more
core   +1 more source

On-Line Hydrogen-Isotope Measurements of Organic Samples Using Elemental Chromium: An Extension for High Temperature Elemental-Analyzer Techniques [PDF]

, 2015
The high temperature conversion (HTC) technique using an elemental analyzer with a glassy carbon tube and filling (temperature conversion/elemental analysis, TC/EA) is a widely used method for hydrogen isotopic analysis of water and many solid and liquid
Arndt Schimmelmann (1352943), Willi A. Brand (1598380), Tetyana Gilevska (1598386), Brand, Willi A., Julian Renpenning (1531390), Gehre, Matthias, Renpenning, Julian, Meijer, Harro A. J.; id_orcid, Qi, Haiping, Harro A. J. Meijer (796441), Tyler B. Coplen (1598383), Coplen, Tyler B., Meijer, Harro A. J., Matthias Gehre (1531399), Gilevska, Tetyana, Schimmelmann, Arndt, Haiping Qi (1598377)   +16 more
core   +1 more source

Surface modification and sputtering erosion of iron and copper exposed to low-energy, high-flux deuterium plasmas seeded with metal species

Nuclear Materials and Energy, 2017
Four sets of targets were used in this study: (1) Fe targets surrounded with 304 type stainless steel composed of mid-Z elements: Fe, Cr, Ni, and Mn (designated as Fe[304SS] targets), (2) Fe targets surrounded with high-Z tungsten (designated as Fe[W ...
V.Kh. Alimov, Y. Hatano, M. Balden, M. Oyaizu, K. Isobe, H. Nakamura, T. Hayashi   +6 more
doaj   +1 more source

Copper isotope evidence for large-scale sulphide fractionation during Earth’s differentiation [PDF]

, 2015
The differentiation of Earth into a metallic core and silicate mantle left its signature on the chemical and isotopic composition of the bulk silicate Earth (BSE).
Savage, P.S., Siebert, J., Badro, J., Moynier, F., Puchtel, I.S., Chen, H., Savage, Paul S., Shofner, G.   +7 more
core   +1 more source

Deuterium Isotope Effects on 13C-NMR Chemical Shifts of 10-Hydroxybenzo[h]quinolines

Molecules, 2013
Deuterium isotope effects on 13C-NMR chemical shifts are investigated in a series of 10-hydroxybenzo[h]quinolines (HBQ’s) The OH proton is deuteriated. The isotope effects on 13C chemical shifts in these hydrogen bonded systems are rather unusual.
Daniel T. Gryko, Fadhil S. Kamounah, Poul Erik Hansen   +2 more
doaj   +1 more source

Quantifying Raindrop Evaporation Deficit in General Circulation Models from Observed and Model Rain Isotope Ratios on the West Coast of India

Atmosphere, 2023
Raindrop evaporation is an important sub-cloud process that modifies rainfall amount and rainwater isotope values. Earlier studies have shown that various general circulation models (GCMs) do not incorporate this process properly during the simulation of
Saikat Sengupta, Sourendra Kumar Bhattacharya, Nimya Sheena Sunil, Sumit Sonar   +3 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

RuKY Catalyst‐Packed Permeation Membrane for Quantitative Ammonia and d3‐Ammonia Dehydrogenation to Ultrapure Hydrogen

ChemistryOpen
Ammonia is a promising carbon‐free hydrogen carrier, but incomplete ammonia dehydrogenation (cracking) generates atmospheric emissions of NOx, a potent greenhouse gas. Additionally, incomplete cracking of ammonia leads to regulatory challenges in nuclear
Christopher J. Koch, Jennifer Naglic, John T. Kelly, Logan Kearney, José D. Arregui‐Mena, Jochen Lauterbach, Lucas M. Angelette, Tyler Guin   +7 more
doaj   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Century-to-millennial scale climatic variability in Lake Malawi revealed by isotope records [PDF]

, 2007
Diatom-based oxygen isotope data (δ18Odiatom) from Lake Malawi show multi-centennial scale wet–dry intervals spaced approximately every 2.3 ka throughout a 25 ka sequence.
Leng, Melanie J., Huang, Yongsong, Barker, Philip A., Leng, Melanie, Barker, P.A., Gasse, Françoise, Huang, Y., Gasse, F.   +7 more
core   +1 more source