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  • Inorganic Chemistry  (5)
  • Lunar and Planetary Science and Exploration  (4)
  • Key words. Assembly planning, Assembly sequencing, Motion space, Nondirectional blocking graph, Manufacturing.  (1)
  • 2000-2004  (5)
  • 1960-1964  (5)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    A General Framework for Assembly Planning: The Motion Space Approach (2000)
    Springer
    Algorithmica 26 (2000), S. 577-601 
    Details
    ISSN: 1432-0541
    Keywords: Key words. Assembly planning, Assembly sequencing, Motion space, Nondirectional blocking graph, Manufacturing.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. Assembly planning is the problem of finding a sequence of motions to assemble a product from its parts. We present a general framework for finding assembly motions based on the concept of motion space . Assembly motions are parameterized such that each point in motion space represents a mating motion that is independent of the moving part set. For each motion we derive blocking relations that explicitly state which parts collide with other parts; each subassembly (rigid subset of parts) that does not collide with the rest of the assembly can easily be derived from the blocking relations. Motion space is partitioned into an arrangement of cells such that the blocking relations are fixed within each cell. We apply the approach to assembly motions of several useful types, including one-step translations, multistep translations, and infinitesimal rigid motions. Several efficiency improvements are described, as well as methods to include additional assembly constraints into the framework. The resulting algorithms have been implemented and tested extensively on complex assemblies. We conclude by describing some remaining open problems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004539910025
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  • 2
    Electronic Resource
    Electronic Resource
    Spectrophotometric Study of iron-2-hydroxymethyl- 6(2′- hydroxymethyl - 5′-hydroxy-4′-pyrone-6′) pyranyl [3,2-b]pyran-4,8-dione complex (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 318 (1962), S. 220-221 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Durch spektrophotometrische Untersuchung des orangeroten Reaktionsproduktes aus WOODs Reagens (s. „Summary“) und Eisen(III)-ionen wird auf ein Molverhältnis Reagens: Fe(III) = 2:1 geschlossen
    Notes: A spectrophotometric study has been made of the reddish-orange product formed in the interaction of the WOODs reagent, 2-hydroxymethyl-6(2′-hydroxymethyl-5′-hydroxy-4′-pyrone-6′)pyranyl[3,2-b]pyran-4,8-dione, with iron. Absorbance measurements by the mole ratio method gave definite evidence of a 2 to 1 mole tario product of the WOODs reagent to iron.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19623180312
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The Interaction of Dihydrogen-di(1,2,3-benzotriazolatium)-Hexacyanoferrate(II) with Certain Organic amines. II (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 321 (1963), S. 175-179 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es werden die Reaktionsmechanismen der Umsetzungen von Dihydrogen-di(1,2,3-benzotriazol)-hexacyanoferrat(II) mit Aminen, Tetramethylammoniumchlorid und Piperidin, die zu schwerlöslichen Niederschlägen führen, untersucht.
    Notes: The chemistry of the interactions of certain organic amines, tetramethylammonium chloride and piperidine with dihydrogen-di(1,2,3-benzotriazolatium)hexacyanoferrate(II) is reported.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633210308
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  • 4
    Electronic Resource
    Electronic Resource
    Spectrophotometric Study of Iron-bis(2-hydroxymethyl-5-hydroxy-4-pyrone-6)-ketone Complexes (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 325 (1963), S. 119-121 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Durch spektrophotometrische Messungen wurde die Bildung von Komplexen im System Eisen(III)-Bis(2-Hydroxymethyl-5-hydroxy-4-pyron-6)keton untersucht. Im ersten Reaktionsschritt wird ein (1:1)-Komplex gebildet, danach sind ein (2:3)- und ein (1:2)-Komplex nachzuweisen.
    Notes: The interaction between iron(III) and bis(2-hydroxymethyl-5-hydroxy-4-pyrone-6)-ketone has been investigated by spectrophotometric methods. Continuous variation and mole ratio curves show evidence that 2:3 and 1:2 complexes are formed. The first step of the reaction involves the formation of an 1:1 complex.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633250303
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  • 5
    Electronic Resource
    Electronic Resource
    The Interaction of 1,2,3-benzotriazole Hydrochloride with Certain Negative Cyano-Complexes of the Transition Metals. III (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 321 (1963), S. 180-183 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es wird über die Bildung und Zusammensetzung schwerlöslicher Verbindungen berichtet, die durch Reaktion von 1,2,3-Benzotriazolhydrochlorid mit Cyanokomplexen von Übergangsmetallen entstehen.
    Notes: The chemistry of the interaction of 1,2,3-benzotriazole hydrochloride and negative cyanocomplexes of certain transition metals is reported and discussed.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633210309
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  • 6
    Electronic Resource
    Electronic Resource
    The interaction of 1,2,3-Benzotriazole with potassium hexacyanoferrate (II). I (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 315 (1962), S. 235-240 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Die Darstellung und einige Eigenschaften des Bis(1,2,3-benzotriazolium)-hexacyano- ferrats(II), [H2(C8H4N2NH2)2][Fe(CN)6], werden beschrieben. Die thermogravimetrische Zersetzung dieser Verbindung deutet die Bildung mehrerer Zersetzungsprodukte an.
    Notes: The preparation and investigation of certain properties of dihydrogen di (1,2,3-benzotriazolatium)hexacyanoferrate(II), H2(C6H4N2NH2)2[Fe(CN) 6], are reported. The thermogravimetric analysis of this compound gives definite evidence of several other products formed during the course of the thermal decomposition of H2(C6H4N2NH2)2[Fe(CN) 6).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19623150314
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  • 7
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    Polar and Non-Polar Layers on Mars: A Single Mechanism for Formation? (2003)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: The recent discovery of vast quantities of near-subsurface ice in both polar regions of Mars by the Mars Odyssey Gamma Ray Spectrometer (GRS) has presented us with an interesting quandary. On one hand, these deposits, found poleward of 60 deg in both hemispheres, are consistent with thermal models suggesting ice will be best protected in these regions during periods of high obliquity. On the other hand, the current paradigm regarding the placement of these deposits, i.e., diffusive deposition of water vapor, appears to be inconsistent with the large volume mixing ratios (approx. 90%) inferred from the GRS data. This incongruity argues that diffusion alone cannot be the primary mechanism for the creation of these reservoirs, and that an alternate, large-scale process should be considered.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Third International Conference on Mars Polar Science and Exploration; LPI-Contrib-1184
    Format: application/pdf
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  • 8
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    The Polar Regions and Martian Climate: Studies with a Global Climate Model (2003)
    In:  CASI
    Details
    Publication Date: 2017-10-02
    Description: Much of the interest in the polar regions centers on the fact that they likely contain the best record of Martian climate change on time scales from years to eons. This expectation is based upon the observed occurrence of weathering product deposits and volatile reservoirs that are coupled to the climate. Interpretation and understanding of these records requires understanding of the mechanisms that involve the exchange of dust, water, and carbon dioxide between the surface and atmosphere, and the atmospheric redistribution of these species. We will summarize our use of the GFDL Mars general circulation model (MGCM), to exploration aspects of the interaction between the global climate and the polar regions. For example, our studies have shown that while the northern polar cap is the dominant seasonal source for water, it can act as a net annual source or sink for water, depending upon the cap temperatures and the bulk humidity of the atmosphere. This behavior regulates the annual and global average humidity of the atmosphere, as the cap acts as a sink if the atmosphere is too wet and a source if it is too dry. We will then focus our presentation on the ability of the MGCM to simulate the observed diurnal variations of surface temperature. We are particularly interested in assessing the influence of dust aerosol and water ice clouds on simulated surface temperature and the comparison with observations. Surface thermal inertia and albedo are critical boundary inputs for MGCM simulations. Thermal inertia is also of intrinsic interest as it may be related to properties of the surface such as particle size and surface character.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Third International Conference on Mars Polar Science and Exploration; LPI-Contrib-1184
    Format: application/pdf
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  • 9
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    Daily to interannual variability in Mars' surfare pressure (2002)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Keywords: Lunar and Planetary Science and Exploration
    Type: American Geophysical Union Annual Fall Meeting; San Francisco, CA; United States
    Format: text
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  • 10
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    Explaining the Mid-Latitude Ice Deposits with a General Circulation Model (2004)
    In:  CASI
    Details
    Publication Date: 2018-06-11
    Description: We have examined the influence of a regolith on the water cycle with a focus on high obliquity periods on Mars. Our findings show that while the regolith will almost certainly interact with the atmosphere initially, it is only a transient effect, and ice will form on the surface once the regolith is effectively isolated from the atmosphere. These low latitude deposits could conceivably be ice deposits formed at high obliquity and are certainly presently out of thermal equilibrium, but remain due to the insulating effect of a dust lag.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Lunar and Planetary Science XXXV: Special Session: Mars Climate Change; LPI-Contrib-1197
    Format: text
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