Hydrogen in Nominally Anhydrous Crustal Minerals [PDF]
, 2003 Systematic infrared and nuclear magnetic resonance investigations of common crustal minerals were undertaken to better understand the geologic significance of minor components of structural hydrous species within these nominally anhydrous minerals ...
Johnson, Elizabeth Ann
core +1 more source
Carbon isotope fractionation during aerobic biodegradation of trichloroethene by Burkholderia cepacia G4: a tool to map degradation mechanisms [PDF]
, 2002 The strain Burkholderia cepacia G4 aerobically mineralized trichloroethene (TCE) to CO2 over a time period of similar to20 h. Three biodegradation experiments were conducted with different bacterial optical densities at 540 nm (OD(540)s) in order to test
Schuth, Christoph +25 more
core +1 more source
Cp*Co-catalyzed directed hydrogen isotope exchange with substrate-dependent deuterium source [PDF]
, 2023 Despite the growing interest in directed Hydrogen Isotope Exchange (HIE) reactions, the existing synthetic protocols mainly rely on noble metals and the choice of the deuterium source remains unclear. Herein, we developed different reaction conditions to
Sergio , Barranco +4 more
core +1 more source
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.
Kalin, R. +4 more
core +1 more source
Quantification of methane oxidation in the rice rhizosphere using 13C-labelled methane [PDF]
, 1994 In this paper isotope ratio mass spectrometry is used to determine the methane (CH4) oxidation fraction in the rhizosphere of intact rice plant-soil systems.
Harren, F.J.M. +11 more
core +1 more source
Isotope Effects in Hydrogen Bond Research [PDF]
, 2023 The chapter deals with geometric changes caused by isotope substitution of hydrogen bonded protons. Furthermore, isotope effects on chemical shifts are discussed to hydrogen bond structures, hydrogen bond strength, and hydrogen bond energies in both ...
Hansen, Poul Erik
core +1 more source
A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]
, 2003 1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (<sup>13</sup>C, &
Bearhop, S. +11 more
core +1 more source
Frontiers in Microbiology, 2019 We determined 2H stable isotope fractionation at natural abundances associated with hydrogenase activity by whole cells of Desulfovibrio vulgaris strain Miyazaki F expressing a NiFe(Se) hydrogenase.
Michaela Löffler +3 more
doaj +1 more source
Hydrogen and oxygen isotope ratios of thermal waters of Okayama Prefecture, Japan [PDF]
, 1999 Hydrogen and oxygen isotope rations of thermal waters from 46 spas in Okayama Prefecture range from -62.6 to -29.2% in δD and from -10.0 to -4.4% in δ18O, respectively.
Yamashita, Ruka +3 more
core +1 more source
A STUDY OF QUANTUM ISOTOPIC SIEVING THORUGH CARBON NANOTUBES [PDF]
, 2013 The theory of molecular sieving has long been a subject of importance because of its widespread technological applications .Classical molecular sieving mainly de- pends on the size and shape of the guest molecules and the size of the host solid.
Dasgupta, Devagnik
core +1 more source