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  • 1
    Electronic Resource
    Electronic Resource
    The formation of polymerizable tubules (1990)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 1 (1990), S. 27-32 
    Details
    ISSN: 1042-7147
    Keywords: Crystallization ; Phospholipids ; Diacetylene ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: We have been investigating the crystallization behavior of the phospholipid amphiphile, 1,2 bis (10, 12-tricosadiynol)-sn-glycero-3-phosphocholine, DC8,9PC, which forms both vesicles and hollow tubules as well as Langmuir Blodgett monolayers and multilayers. This material has polymerizable diacetylene groups in equivalent positions on the two hydrocarbon tails. The direct crystallization from solution of this amphiphile has been studied using different solvent mixtures and temperatures. The Langmuir Blodgett technique was also used to compress and orient the tubules.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pat.1990.220010105
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Potential evapotranspiration and the likelihood of future drought (1990)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The possibility that the greenhouse warming predicted by the GISS general-circulation model and other GCMs could lead to severe droughts is investigated by means of numerical simulations, with a focus on the role of potential evapotranspiration E(P). The relationships between precipitation (P), E(P), soil moisture, and vegetation changes in GCMs are discussed; the empirically derived Palmer drought-intensity index and a new supply-demand index (SDDI) based on changes in P - E(P) are described; and simulation results for the period 1960-2060 are presented in extensive tables, graphs, and computer-generated color maps. Simulations with both drought indices predict increasing drought frequency for the U.S., with effects already apparent in the 1990s and a 50-percent frequency of severe droughts by the 2050s. Analyses of arid periods during the Mesozoic and Cenozoic are shown to support the use of the SDDI in GCM drought prediction.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 9983-100
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Long-Term Monitoring of Global Climate Forcings and Feedbacks (1993)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A workshop on Long-Term Monitoring of Global Climate Forcings and Feedbacks was held February 3-4, 1992, at NASA's Goddard Institute for Space Studies to discuss the measurements required to interpret long-term global temperature changes, to critique the proposed contributions of a series of small satellites (Climsat), and to identify needed complementary monitoring. The workshop concluded that long-term (several decades) of continuous monitoring of the major climate forcings and feedbacks is essential for understanding long-term climate change.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: NASA-CP-3234 , REPT-93E02369 , NAS 1.55:3234 , Feb 03, 1992 - Feb 04, 1992; New York, NY; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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