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  • CHEMISTRY
  • 1970-1974  (123)
  • 1965-1969  (297)
  • 1974  (123)
  • 1968  (297)
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Years
  • 1970-1974  (123)
  • 1965-1969  (297)
Year
  • 1
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    Band model representations for high temperature water vapor and carbon dioxide (1968)
    In:  CASI
    Details
    Publication Date: 2005-11-13
    Description: Band models for high temperature water vapor and carbon dioxide
    Keywords: CHEMISTRY
    Type: NASA MOL. RADIATION AND ITS APPL. TO DIAGNOSTIC TECH. 8 JAN. 1968 (SEE N68-18082 08-33) P 19-35
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  • 2
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    Polymer research (1968)
    In:  CASI
    Details
    Publication Date: 2006-03-26
    Description: Polymer research - transport characteristics of ionene battery separator membranes
    Keywords: CHEMISTRY
    Type: SPACE PROGRAMS SUM. NO. 37-51, VOL. 3 30 JUN. 1968; P 109-115
    Format: text
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  • 3
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    Quantum chemical study of the thermodynamics, kinetics of formation and bonding of H2CN - Relevance to prebiotic chemistry (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Keywords: CHEMISTRY
    Type: Journal of Molecular Evolution; 3; 3, 19; 1974
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  • 4
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    GC-MS in the analysis of organic compounds in meteorites (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The application of an analytical approach combining gas chromatography with mass spectrometry (GC-MS) has shown that the amino acid composition of meteorite extracts is quite complex. A computer was used in the evaluation of the data obtained in the investigations. The computer programs developed have been concerned solely with the mass spectra of amino acids. Specialized programs have been written to determine the number of carbon atoms in an amino acid which is a member of any of three subclasses.
    Keywords: CHEMISTRY
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  • 5
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    A flash photolysis-resonance fluorescence kinetics study of the reaction S/3P/ + OCS (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Using the technique of flash photolysis-resonance fluorescence, the reaction of ground-state atomic sulfur with carbonyl sulfide has been investigated over the temperature range from 233 to 445 K. Over this temperature range, the experimental data were fitted to an Arrhenius equation of the form k sub 1 = (1.52 plus or minus 0.20) x 10 to the minus 12th power exp(-3.63 plus or minus 0.12 kcal/mol/RT) cu cm/molecule/sec. A comparison of these results with previous investigations on this reaction system is presented.
    Keywords: CHEMISTRY
    Type: Journal of Physical Chemistry; 78; June 6
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  • 6
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    Enhanced oxidative vaporization of Cr2O3 and chromium by oxygen atoms (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Rates of oxidative vaporization of Cr2O3 have been found to be markedly enhanced in the presence of oxygen atoms. Investigations were conducted over the temperature range 200-1250 C. For Cr2O3 the enhancement was about 10 to the 9th power at 550 C in oxygen containing 2.5% atoms. Rapid oxidative vaporization of bare chromium was observed below 800 C, the rate being about one-half that of Cr2O3. Results are interpreted in terms of thermochemical analysis.
    Keywords: CHEMISTRY
    Type: Electrochemical Society; vol. 121
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  • 7
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    Sticking probabilities for the adsorption of hydrogen on clean Ni/111/, Ni/100/, Ni sheet and evaporated Ni films (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Determination of the sticking probability for hydrogen adsorption on clean Ni(111), Ni(100), polycrystalline nickel sheet, and polycrystalline evaporated nickel films, using a modification of the reflection detector technique of Horgan and King (1970) for metal films. The initial sticking probability for hydrogen adsorption on a nickel film at 300 K by the proposed method is found to be 0.25 in comparison to 0.35 for hydrogen adsorption on a nickel film using the reflection detector technique. Also, the sticking probabilities on smooth single-crystal (111) and (100) planes and polycrystalline sheets are found to be lower than those on the rougher polycrystalline nickel films.
    Keywords: CHEMISTRY
    Type: Surface Science; 41; 2, Fe; Feb. 197
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  • 8
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    Photo-induced free radicals on a simulated Martian surface (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Results of an electron spin resonance study of free radicals in the ultraviolet irradiation of a simulated Martian surface suggest that the ultraviolet photolysis of CO or CO2, or a mixture of both, adsorbed on silica gel at minus 170 C involves the formation of OH radicals and possibly of H atoms as the primary process, followed by the formation of CO2H radicals. It is concluded that the photochemical synthesis of organic compounds could occur on Mars if the siliceous surface dust contains enough silanol groups and/or adsorbed H2O in the form of bound water.
    Keywords: CHEMISTRY
    Type: Nature; 248; Apr. 12
    Format: text
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  • 9
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    Major and trace elements in the Allende meteorite (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The Allende samples analyzed include seven Ca, Al-rich aggregates, ten melilite chondrules, an olivine chondrule, and two olivine-rich aggregates. The Allende meteorite has been described as a type III carbonaceous chondrite. Major element abundances were determined with the electron microprobe technique reported by Reed and Ware (1972). An MS7 spark source mass spectrometer was used for the determination of trace element abundances.
    Keywords: CHEMISTRY
    Type: Nature; 249; May 24
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  • 10
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    Evidence for two immunologically distinct acetyl-coenzyme A synthetases in yeast (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Evidence is presented that clearly establishes the presence of two acetyl-CoA synthetases in Saccharomyces cerevisiae, one elaborated under 'aerobic' conditions, the other under 'nonaerobic' conditions. The antibody produced by each enzyme is immunologically specific.
    Keywords: CHEMISTRY
    Type: Biochimica et Biophysica Acta; 341; 1974
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