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  • LUNAR AND PLANETARY EXPLORATION  (25)
  • GEOPHYSICS  (13)
  • Chemistry  (8)
  • SOLAR PHYSICS  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Ueber einige neue Synthesen von Diketochinazolin (1894)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 49 (1894), S. 318-318 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: No Abstracts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18940490123
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of moisture on glycidyl reactions with carboxylic acid anhydrides (1966)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 6 (1966), S. 65-70 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Moisture present in epoxy anhyride composites may hydrolyze the anhydride and cause major changes in the mechanical and chemical properties of the final composite. Heat distortion data and infrared spectroscopy are used to analyze the changes caused by the presence of the moisture. As the concentraton of water is increased, there is a decrease in the heat distortion or gass transition temperature. The decrease is due to a change in the crosslinking network and is caused by the reduction of the functonality of the epoxy group for acid as compared to the anhydride. Where rigid specifications must be met it is essential that the moisture level in the fillers, resins, etc. be kept constant.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760060112
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Über Die Carbonylgruppe in statu nascendi (1911)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 83 (1911), S. 194-197 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19110830112
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  • 4
    Electronic Resource
    Electronic Resource
    Studien über Absorptionsspektren. IV. Einfluß des Lösungsmittels und der Verdünnung auf die Gültigkeit des Beerschen Gesetzes (1911)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 44 (1911), S. 2819-2826 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.191104403122
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  • 5
    Electronic Resource
    Electronic Resource
    Ueber aromatische Zuckerarten (1892)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 25 (1892), S. 2555-2563 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.18920250268
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  • 6
    Electronic Resource
    Electronic Resource
    Keten. Bemerkungen zu der Abhandlung der HHrn. Staudinger und Klever (1908)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 41 (1908), S. 1025-1027 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.190804101202
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  • 7
    Electronic Resource
    Electronic Resource
    Thermoplastic properties of polyacrolein and its acetalsPresented in part at the 148th Meeting of the American Chemical Society, Chicago, September 1964. (1965)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 3495-3501 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Free-radical polyacrolein is an essentially pure head-to-tail vinyl polymer which results in its being a poly- 1,5-dicarbonyl compound. The proximity of these carbonyl groups results in a partial cyclization (laddering) in the polymer or in its derivatives, which in turn has about the same effect on modulus as adding methyl groups to the backbone chain of a polyacrylate or pendant phenyl groups to the backbone chain of polyethylene. Above a viscosity-average molecular weight of about 200,000, respectable high polymer properties are attained, comparable to those of poly(methyl methacrylate) or polystyrene with higher heat deflection temperatures. Although thermal properties are sufficient to withstand boiling water, actual water and solvent resistances are marginal to poor.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1965.100031013
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  • 8
    Electronic Resource
    Electronic Resource
    Radiation chemistry of iodine-octamethylcyclotetrasiloxane solutions (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 3781-3790 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Post-irradiation polymerization of γ-ray-irradiated liquid octamethylcyclotetrasiloxane containing a small amount of iodine was observed. The effect occurs at room temperature without an additional stimulus, and we conclude that it results from catalysis by HI3, i.e., a complex of HI + I2. Hydrogen triiodide is produced when iodine-octamethylcyclotetrasiloxane solutions are irradiated with γ-rays from Co60. HI3 is a good rearrangement catalyst for siloxane bonds. The dose is critical; short irradiations do not produce enough HI, while longer irradiations consume most of the I2. The triiodide complex dissociates at temperatures equal to or greater than 60°C.; thus, the polymerization stops as the temperature is raised, but contrary to usual post-irradiation polymerization processes, resumes when the sample cools. Pure irradiated octamethylcyclotetrasiloxane polymerizes upon the addition of iodine. We assume that the irradiation produces silicon-hydrogen bonds which react with iodine yielding the catalyst HI3. In all systems the HI3 was identified spectrophotometrically. However, its role in the polymerization was established directly when it was determined that an unirradiated iodine-octamethylcyclotetrasiloxane solution polymerized upon the addition of HI.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100020836
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  • 9
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    Observations of interplanetary Lyman-alpha with the Galileo Ultraviolet Spectrometer: Multiple scattering effects at solar maximum (1994)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The Galileo Ultravilet Spectrometer Experiment (UVS) obtained a partial celestial sphere map of interplanetary Lyman-alpha (IP L alpha) on 13-14 December 1990 during the first Earth encounter. The Galileo spacecraft was near the downwind axis of the local interstellar medium flow. These UVS measurements sampled the downwind, anti-sunward hemisphere. The data were modeled using a hot model of the interplanetary hydrogen density distribution with the goal of studying multiple scattering effects in the inner solar system. The derived ratio in the downwind direction of the observed brightness and a single scattering model brightness, both normalized to unity in the upwind direction, is 1.82 +/- 0.2. This brightness ratio requires a multiple scattering correction which is 36% larger than can be accounted for by theoretical calculations. The hot model may require: (1) a temperature perturbation of the interstellar wind velocity distribution or (2) an additional downstream source of interplanetary hydrogen. However, a more likely exlanation which affects the hot model is the latitude dependence of the radiation pressure. This dependence, based on the known solar L alpha flux latitude variation at solar maximum, causes a downwind brightness enhancement by preferential focusing of H-atoms with trajectory planes containing the solar poles. This result implies that radiation pressure near the solar poles is nearly independent of solar cycle and is insufficient to lead to a net repulsion of hydrogen atoms by the sun, as can occur near the ecliptic plane during the solar maximum. In addition, the UVS performed 13 observations of IP L alpha while in cruise between Venus and the Earth in 3 directions fixed in ecliptic coordinates.
    Keywords: SOLAR PHYSICS
    Type: Astronomy and Astrophysics (ISSN 0004-6361); 289; 1; p. 283-303
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Analysis of Pioneer Venus Orbiter ultraviolet spectrometer Lyman alpha data from near the subsolar region (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Pioneer Venus Orbiter ultraviolet spectrometer data from 20 orbits which span 3 years have been analyzed to determine the atomic hydrogen number density and vertical flux at the exobase as a function of solar zenith angle, F(10.7) index, and spacecraft latitude. From 1979 through 1981, the exobase number density n(c) and flux phi(c) are remarkably constant at n(c) = 6.0 + or - 1.5 x 10 to the 4th/cu cm and phi(e) = 7.5 + or - 1.5 x 10 to the 7th/sq cm per s in the subsolar region. The integrated vertical column density above 110 km is 3.6 + or - 1 x 10 to the 13th/sq cm. An empirical relationship is determined between the line center solar flux at H Lyman alpha, piF(0), and the F(10.7) index.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 1766-177
    Format: text
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    NASA TECHNICAL REPORTS
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