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  • Inorganic Chemistry  (7,617)
  • LUNAR AND PLANETARY EXPLORATION
  • 2015-2019  (5)
  • 1985-1989  (6,497)
  • 1965-1969  (4,202)
Collection
Keywords
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Ein neues Verfahren zur Synthese von Aminalen und Enaminen (1967)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 100 (1967), S. 1289-1295 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ein neues Verfahren zur Synthese von Aminalen und Enaminen durch Umsetzung von Tris(dimethylamino)-arsin mit Aldehyden oder Ketonen wird beschrieben. Diese Reaktion ist auch auf andere Tris(dialkylamino)-arsine übertragbar.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19671000430
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Die Totalsynthese von (±)-Pukatein (1969)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 102 (1969), S. 2959-2965 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das in seiner Struktur als 11-Hydroxy-1.2-methylendioxy-aporphin (16) aufgeklärte2) Alkaloid Pukatein wurde synthetisiert. Aus dem Amin 9 und 2-Nitro-3-benzyloxy-phenyl-essigsäure (8) (Weg A) bzw. 2-Nitro-3-benzyloxy-ω-diazo-acetophenon (7) (Weg B) wurde das Amid 10 hergestellt. Isochinolinringschluß nach Bischler-Napieralski und Pschorr-Ringschluß führten zum (±)-11-Benzyloxy-1.2-methylendioxy-aporphin (15), dessen Hydrogenolyse 16 ergab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19691020910
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Eine stereoselektive Synthese von cis- und trans-3-Phenyl-2-carboxy-pyrrolidon-(5) (1967)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 100 (1967), S. 1137-1143 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Kondensation von Zimtsäure-äthylester und N-Acetyl-glycin-äthylester-natrium entsteht stereoselektiv trans-3-Phenyl-2-carboxy-pyrrolidon-(5) (2a1), während sich durch thermische Decarboxylierung von 3-Phenyl-2.2-dicarboxy-pyrrolidon-(5) (8) die reine cis-Form bildet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19671000411
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  • 4
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    Energetic ions upstream of Jupiter's bow shock (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: In an analysis of the Jovian ion events, Baker et al. (1984) have found that there appears to be a spectral hardening as the interplanetary magnetic field (IMF) changed orientation from the postnoon to a prenoon connection point. It was also observed that ion events were accompanied by long-period (approximately 10 min) waves whose presence was weakly related to a decrease in the ion anisotropy. The present investigation examines in substantial detail the development of the ion energy spectrum over the full range (approximately 30 keV to approximately 4 MeV). The results of the investigation show that the energy spectra are dominated by heavy ions (presumed to be oxygen and sulfur) at higher (approximately equal to or greater than 300 keV) energies.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 90; 3947-396
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  • 5
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    Zonally symmetric response to atmospheric tidal forcing in the dusty Martian atmosphere (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The paper presents a steady state, zonally symmetric response of an atmospheric circulation to the combined effects of the very large zonal-mean diabatic heating and thermotidal forcing thought to exist in the dusty Martian atmosphere during one of its episodic global dust storms. The zonal-mean components of the tidal flux-convergences of momentum and heat are computed using an existing classical atmospheric tidal model constrained by the surface pressure observations at the two Viking Lander sites on Mars. A nearly inviscid two-dimensional model is used to compute the zonally symmetric response to the computed tidal flux-convergences and to the zonal-mean heating of the airborne dust. The results are compared with data from the Viking missions.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of the Atmospheric Sciences (ISSN 0022-4928); 45; 2469-248
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  • 6
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    Free and forced modes in the Martian atmosphere (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Computations are conducted for the periods of free modes in the Martian atmosphere with a view to the short atmospheric radiative damping time and the seasonal and interannual variation of globally representative temperatures, both of which differ from their terrestrial counterparts by an order of magnitude. Attention is given to the possibility of atmospheric resonance and the efficient excitation (or even the resonant amplification) of forced modes. A thermally-forced diurnal Kelvin wave is recommended as the most reasonable of several alternative explanations of the short-period transient mode that occurs just before, or during, Mars' great episodic dust storms.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 9452-946
    Format: text
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  • 7
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    The role of climate studies in the future exploration of Mars (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Three major reasons for the continued study of the weather and climate of Mars are: (1) the engineering support of future unmanned and manned missions, including operations on the Martian surface, (2) the comparative study of the climates of earth and Mars, and (3) the perspective provided by understanding what Mars is really like now and how it got that way. Together, the suite of national and international missions to Mars currently in progress and in the advanced planning stages could provide a credible data base for addressing many outstanding climatic questions, as well as greatly improving current engineering models of the Mars atmosphere and surface.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: AAS PAPER 87-199
    Format: text
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  • 8
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    The Martian atmospheric water cycle as viewed from a terrestrial perspective (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: It is noted that the conditions of temperature and pressure that characterize the atmosphere of Mars are similar to those found in the Earth's stratosphere. Of particular significance is the fact that liquid water is unstable in both environments. Thus, it is expected that terrestrial studies of the dynamical behavior of stratospheric water should benefit the understanding of water transport on Mars as well.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Inst., MECA Workshop on Atmospheric H2O Observations of Earth and Mars. Physical Processes, Measurements and Interpretations; p 92
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  • 9
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    The interannual variability of atmospheric water vapor on Mars (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: The acquisition of several north-south scans during the Survey/Completion Mission by the Mars Atmospheric Water Detector (MAWD) onboard Viking Orbiter 1 make it possible to compare water vapor column abundance during northern spring and early summer seasons from three successive Mars years. All three years exhibit very similar seasonal trends. Differences between years tend to be localized, and not regional, with maximum differences between years occurring in the same general areas that the day-to-day variability of water vapor as observed by MAWD is large. It is suggested that the observed year-to-year differences are also artifacts of clouds in the MAWD field of view and that there is remarkably little difference in the water cycle during northern spring and early summer, despite very different dust storm episodes during the preceding three years.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Inst., MECA Workshop on Atmospheric H2O Observations of Earth and Mars. Physical Processes, Measurements and Interpretations; p 91
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  • 10
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    Seasonal and diurnal variability of Mars water-ice clouds (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: The diurnal and seasonal behavior of cloud opacity and frequency of occurrence was studied using an atlas of cloud occurrences compiled from the Viking IRTM (Infrared Thermal Mapper) data set. It was found that in some areas the behavior of water appeared to repeat in the zonal mean. However, this interpretation is complicated by both poor coverage and the variability of dust and clouds. As a result, the extent and nature of interannual variability remains unclear.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Lunar and Planetary Inst., MECA Workshop on Atmospheric H2O Observations of Earth and Mars. Physical Processes, Measurements and Interpretations; p 29-30
    Format: text
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