PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1024583-3 1976 It is demonstrated that CD4 is a competitive inhibitor of CH4 oxidation. Methane 58-61 CD4 molecule Homo sapiens 24-27 30444626-4 2018 The molecular rotation of methyl radicals isolated in the deuterated solid methane isotopomer, CD4, was investigated both by experimental and theoretical electron paramagnetic resonance (EPR) methods. Methane 75-82 CD4 molecule Homo sapiens 95-98 30968506-1 2019 Mass spectrometric analysis of the anionic products of interaction between platinum atomic anions, Pt- , and methane, CH4 and CD4 , in a collision cell shows the preferred generation of [PtCH4 ]- and [PtCD4 ]- complexes and a low tendency toward dehydrogenation. Methane 109-116 CD4 molecule Homo sapiens 126-129 27438025-2 2016 Pt(+) cations are formed by laser ablation and exposed to controlled amounts of CH4/CD4 leading to [Pt,xC,(4x-2)H/D](+) dehydrogenation products. Methane 80-83 CD4 molecule Homo sapiens 84-87 29633220-1 2018 The present work explores the structures of species formed by dehydrogenation of methane (CH4) and perdeuterated methane (CD4) by the 5d transition metal cation osmium (Os+). Methane 113-120 CD4 molecule Homo sapiens 122-125 25768128-1 2015 The reaction of atomic thorium cations with CH4 (CD4) and the collision-induced dissociation (CID) of ThCH4(+) with Xe are studied using guided ion beam tandem mass spectrometry. Methane 44-47 CD4 molecule Homo sapiens 49-52 24588097-0 2014 Temperature-dependent kinetics of charge transfer, hydrogen-atom transfer, and hydrogen-atom expulsion in the reaction of CO+ with CH4 and CD4. Methane 131-134 CD4 molecule Homo sapiens 139-142 24749673-0 2014 Theoretical kinetics study of the O(3P) + CH4/CD4 hydrogen abstraction reaction: the role of anharmonicity, recrossing effects, and quantum mechanical tunneling. Methane 42-45 CD4 molecule Homo sapiens 46-49 24568117-1 2014 The temperature dependences of the rate constants and product branching ratios for the reactions of FeO(+) with CH4 and CD4 have been measured from 123 to 700 K. The 300 K rate constants are 9.5 x 10(-11) and 5.1 x 10(-11) cm(3) s(-1) for the CH4 and CD4 reactions, respectively. Methane 112-115 CD4 molecule Homo sapiens 251-254 24568117-1 2014 The temperature dependences of the rate constants and product branching ratios for the reactions of FeO(+) with CH4 and CD4 have been measured from 123 to 700 K. The 300 K rate constants are 9.5 x 10(-11) and 5.1 x 10(-11) cm(3) s(-1) for the CH4 and CD4 reactions, respectively. Methane 243-246 CD4 molecule Homo sapiens 120-123 23812350-6 2013 From the collision energy dependence of the abstraction/insertion ratio, the barrier height for the abstraction pathway is estimated to be 0.7 +- 0.3 and 0.8 +- 0.1 kcal mol(-1) for O((1)D2) with CH4 and CD4, respectively. Methane 196-199 CD4 molecule Homo sapiens 204-207 23812350-7 2013 The insertion pathway of the O((1)D2) reaction with CH4 has a narrower angular width in the forward scattering and a larger insertion/abstraction ratio than the reaction with CD4, which indicates that the insertion reaction with CH4 has a larger cross section and a shorter reaction time than the reaction with CD4. Methane 52-55 CD4 molecule Homo sapiens 175-178 23812350-7 2013 The insertion pathway of the O((1)D2) reaction with CH4 has a narrower angular width in the forward scattering and a larger insertion/abstraction ratio than the reaction with CD4, which indicates that the insertion reaction with CH4 has a larger cross section and a shorter reaction time than the reaction with CD4. Methane 52-55 CD4 molecule Homo sapiens 311-314 23812350-7 2013 The insertion pathway of the O((1)D2) reaction with CH4 has a narrower angular width in the forward scattering and a larger insertion/abstraction ratio than the reaction with CD4, which indicates that the insertion reaction with CH4 has a larger cross section and a shorter reaction time than the reaction with CD4. Methane 229-232 CD4 molecule Homo sapiens 175-178 23812350-7 2013 The insertion pathway of the O((1)D2) reaction with CH4 has a narrower angular width in the forward scattering and a larger insertion/abstraction ratio than the reaction with CD4, which indicates that the insertion reaction with CH4 has a larger cross section and a shorter reaction time than the reaction with CD4. Methane 229-232 CD4 molecule Homo sapiens 311-314 21240398-0 2011 Deuterium kinetic isotope effects on the gas-phase reactions of C2H with H2(D2) and CH4(CD4). Methane 84-87 CD4 molecule Homo sapiens 88-91 17030134-7 2007 Calculations are also reported for the isotopic methane (CD4, 13CH4) hydrates. Methane 48-55 CD4 molecule Homo sapiens 57-60 26616766-1 2010 Application to the CH4/CD3H/CD4 + CF3 Abstraction Reactions. Methane 19-22 CD4 molecule Homo sapiens 28-31 26616766-5 2010 The performance of this algorithm has been tested for the CH4/CD3H/CD4 + CF3 hydrogen abstraction reactions with encouraging results, i.e., when the fitting is performed using 13 points, the algorithm is about 30 times faster than the full calculation with deviations that are smaller than 5%. Methane 58-61 CD4 molecule Homo sapiens 67-70 19787985-4 2005 There has been a controversial discussion about an experiment which seemed to indicate that deuteron transfer from CD4+ to CH4 can create stable isotopomers with chemically distinguishable hydrogen atoms, CH3-HD+. Methane 123-126 CD4 molecule Homo sapiens 115-118 17249765-1 2007 High-resolution electron spin resonance (ESR) spectra of radical pairs of a hydrogen atom that coupled with a methyl radical (H...CH3, H...CHD2, D...CH2D, and D...CD3) were observed for X-ray irradiated solid argon containing selectively deuterium-labeled methanes, CH4, CH2D2, and CD4, at 4.2 K. The double-quartet 1H-hyperfine (hf) splittings of ca. Methane 256-264 CD4 molecule Homo sapiens 282-285 17249765-1 2007 High-resolution electron spin resonance (ESR) spectra of radical pairs of a hydrogen atom that coupled with a methyl radical (H...CH3, H...CHD2, D...CH2D, and D...CD3) were observed for X-ray irradiated solid argon containing selectively deuterium-labeled methanes, CH4, CH2D2, and CD4, at 4.2 K. The double-quartet 1H-hyperfine (hf) splittings of ca. Methane 266-269 CD4 molecule Homo sapiens 282-285 19787985-6 2005 In collisions of CH4+ with CH4 or CD4, there is significant scrambling and one would need to use differential scattering selection for getting ions produced exclusively via a specific mechanism. Methane 17-21 CD4 molecule Homo sapiens 34-37 19787985-6 2005 In collisions of CH4+ with CH4 or CD4, there is significant scrambling and one would need to use differential scattering selection for getting ions produced exclusively via a specific mechanism. Methane 17-20 CD4 molecule Homo sapiens 34-37 34658236-4 2021 We found that as the incident velocity of CH4 and CD4 increases, the sticking probabilities for both molecules on a CH4 condensed film decrease systematically, but that preferential sticking and condensation occur for CD4. Methane 42-45 CD4 molecule Homo sapiens 218-221 15267839-3 2004 For isotopomers containing CH4, 13CH4, and CD4, two sets of transitions with K = 0 and one with K = 1 were recorded, correlating to the j = 0, 1, and 2 rotational levels of free methane, respectively (j is the rotational angular momentum quantum number of the methane monomer). Methane 178-185 CD4 molecule Homo sapiens 43-46 12783540-3 2003 The temperature dependence of the EIE for oxidative addition of CH4 and CD4 differs significantly from that for coordination, with the EIE being normal at all temperatures and approaching infinity at 0 K. In contrast to oxidative addition of methane which is normal at all temperatures, the EIE for oxidative addition of H2 and D2 exhibits a transition from inverse to normal upon raising the temperature. Methane 242-249 CD4 molecule Homo sapiens 72-75 15250683-1 2004 We present an ab initio direct dynamics trajectory study of the hydrogen abstraction reaction: H2CO+ + CD4 --> H2COD+ + CD3, with methane excited in two different distortion modes (nu4 and nu2). Methane 133-140 CD4 molecule Homo sapiens 103-106 34658236-4 2021 We found that as the incident velocity of CH4 and CD4 increases, the sticking probabilities for both molecules on a CH4 condensed film decrease systematically, but that preferential sticking and condensation occur for CD4. Methane 116-119 CD4 molecule Homo sapiens 50-53 34658236-8 2021 We propose that enhanced multi-phonon interactions and inelastic cross sections between the incident CD4 projectile and the CH4 film allow for more efficacious gas-surface energy transfer. Methane 124-127 CD4 molecule Homo sapiens 101-104 34074750-6 2021 The experimental rates for methane conversion are first order in both CH4 and S2, consistent with the involvement of two S sites in the rate-determining methane C-H activation step, with a CD4/CH4 kinetic isotope effect of 1.78. Methane 27-34 CD4 molecule Homo sapiens 189-192 34985901-2 2022 When methane (CH4) in the spatially homogeneous methane hydrate was replaced with deuterated methane (CD4), it showed a previously unrecognized strong anharmonic effect, identified by the Raman peak located at 1952.78 cm-1. Methane 5-12 CD4 molecule Homo sapiens 102-105 34985901-2 2022 When methane (CH4) in the spatially homogeneous methane hydrate was replaced with deuterated methane (CD4), it showed a previously unrecognized strong anharmonic effect, identified by the Raman peak located at 1952.78 cm-1. Methane 14-17 CD4 molecule Homo sapiens 102-105