Results 101 to 110 of about 60,877 (255)
Isotopic fractionation of carbon, deuterium and nitrogen : a full chemical study
, 2015 Context. The increased sensitivity and high spectral resolution of millimeter telescopes allow the detection of an increasing number of isotopically substituted molecules in the interstellar medium. The 14N/ 15N ratio is difficult to measure directly for
Hickson, K. M. +2 more
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Ueber die Einwirkung von Selenwasserstoff auf Nitrile [PDF]
, 1904 W. Becker, Julius Meyer
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Catalytic trimerization of aromatic nitriles for synthesis of polyimide matrix resins [PDF]
Aromatic nitriles may be trimerized at moderate temperature and pressure with p-toluenesulfonic acid as catalyst. Studies were conducted to establish the effect of the reaction temperature, pressure, time, and catalyst concentration on yield of the ...
Hsu, L. C.
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Comprehensive Organic Analysis of Antartic Micrometeorites [PDF]
, 2008 Introduction: Micrometeorites (MMs) are thought to be significant contributors of organic material to the early Earth [1], and a variety of techniques have been employed to identify their organic composition [2-6]. These include the identification of key
Dobrica, E. +4 more
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A Cobalt-Containing Eukaryotic Nitrile Hydratase [PDF]
, 2017 Nitrile hydratase (NHase), an industrially important enzyme that catalyzes the hydration of nitriles to their corresponding amides, has only been characterized from prokaryotic microbes. The putative NHase from the eukaryotic unicellular choanoflagellate
Bennett, Brian +3 more
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Abundant Z-cyanomethanimine in the interstellar medium: paving the way to the synthesis of adenine
, 2018 We report the first detection in the interstellar medium of the Z-isomer of cyanomethanimine (HNCHCN), an HCN dimer proposed as precursor of adenine. We identified six transitions of Z-cyanomethanimine, along with five transitions of E-cyanomethanimine ...
Aladro, R. +8 more
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, 2013 The 15N isotopologue abundance ratio measured today in different bodies of the solar system is thought to be connected to 15N-fractionation effects that would have occured in the protosolar nebula.
Biver, N. +9 more
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1,3-Dipoles: Nitrile Imines, Nitrile Oxides and Nitrile Sulfides [PDF]
Synlett, 2012 openaire +1 more source
The following topics are discussed with respect to Titan: observations of the atmosphere; laboratory simulations and theoretical models of Titan's atmosphere; endpoints of atmospheric chemistry - aerosols and oceans; exobiology; and the next steps in ...
Gautier, Daniel +3 more
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