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  • 1
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    Children's vaccine initiative (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, J W -- New York, N.Y. -- Science. 1994 Oct 28;266(5185):527-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939695" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Child, Preschool ; *Developing Countries ; Humans ; *Immunization Programs ; Infant ; Research ; *Vaccines ; World Health Organization
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 2
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    Propulsion technology discipline (1990)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Viewgraphs on propulsion technology discipline for Space Station Freedom are presented. Topics covered include: water electrolysis O2/H2 system; hydrazine system advancements; common technology; fluids disposal; and storable bipropellant system.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: NASA, Washington, Technology for Space Station Evolution. Executive Summary and Overview; p 179-196
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Propulsion for the lunar mission (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The paper describes the selection process utilized by NASA during the conduct of the 90-day study of the mission set that is known as the Space Exploration Initiative (SEI). It is directed specifically toward propulsion system definition and selection, with emphasis on the proposed Lunar Transfer Vehicle and the Lunar Exploration Vehicle. Results of trade studies show that selection cannot be readily made on the basis of engine performance alone, because the cost of launching hardware elements and the required propellant are very high. A decision must be made to use either life-cycle costs or annual program costs as the economic figure of merit, because they drive the selection in opposite directions.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: AIAA PAPER 90-3709
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Engine selection for the Space Exploration Initiative (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The process used by NASA in the selection of the engine for the Space Exploration Initiative mission is described. The major propulsion requirements of the engine are addressed along with the engine options and key drivers and trades. Special attention is given to the requirements of the propellant feed system and the reaction control system. As a result of the 90-study, four moderate chamber pressure expander-cycle oxygen/hydrogen engines with a thrust level of 20,000 lbf each were selected for the lunar transfer vehicle. The paper also presents results of architecture studies and of advanced engine test bed studies.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: AIAA PAPER 90-1880
    Format: text
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    NASA TECHNICAL REPORTS
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