21 research outputs found

    Ancient and historical systems

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    Shielding Strategies for Human Space Exploration

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    A group of twenty-nine scientists and engineers convened a 'Workshop on Shielding Strategies for Human Space Exploration' at the Lyndon B. Johnson Space Center in Houston, Texas. The provision of shielding for a Mars mission or a Lunar base from the hazards of space radiations is a critical technology since astronaut radiation safety depends on it and shielding safety factors to control risk uncertainty appear to be great. The purpose of the workshop was to define requirements for the development and evaluation of high performance shield materials and designs and to develop ideas regarding approaches to radiation shielding. The workshop was organized to review the recent experience on shielding strategies gained in studies of the 'Space Exploration Initiative (SEI),' to review the current knowledge base for making shield assessment, to examine a basis for new shielding strategies, and to recommend a strategy for developing the required technologies for a return to the moon or for Mars exploration. The uniqueness of the current workshop arises from the expected long duration of the missions without the protective cover of the geomagnetic field in which the usually small and even neglected effects of the galactic cosmic rays (GCR) can no longer be ignored. It is the peculiarity of these radiations for which the inter-action physics and biological action are yet to be fully understood

    Laboratory Directed Research and Development Annual Report - Fiscal Year 2000

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    41st Rocky Mountain Conference on Analytical Chemistry

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    Final program, abstracts, and information about the 41st annual meeting of the Rocky Mountain Conference on Analytical Chemistry, co-sponsored by the Colorado Section of the American Chemical Society and the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, August 1-5, 1999

    Lunar and Planetary Science 37

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    Includes preface, table of contents, program, abstracts and indexes for the 37th LPSC. This conference included special sessions on: the Bosumtwi Meteorite Impact Crater Drilling Project; the Deep Impact Mission; and the Hayabusa Asteroid Mission.sponsors Lunar and Planetary Institute, NASA Johnson Space Centerprogram committee, Stephen J. Mackwell, co-chair, Eileen K. Stansbery, co-chair ... [and others] ; compiled by Lunar and Planetary Institute.PARTIAL CONTENTS: Constraints on the Huygens Landing Site Topography from the Surface Science Package Acoustic Properties Instrument / M.C. Towner, J. R.C. Garry, H. Svedhem, A. Hagermann, B.C. Clark, R.D. Lorenz, M R. Leese, B. Hathi, and J.C. Zarnecki--Do Hadean Zircons Retain a Record of the Late Heavy Bombardment on Earth? / D. Trail, S.J. Mojzsis, T.M. Harrison, and H.F. Levison--Principal Component Analysis of Geochemical Data at Gusev Crater / E. Tréguier, C. d'Uston, and R. Gellert--Brown and Clear Olivine in Chassignite NWA 2737: Water and Deformation / A.H. Treiman, M. McCanta, M.D. Dyar, C.M. Pieters, T. Hiroi, M.D. Lane, and J.L. Bishop--Two Likely Meteorite-dropping Bolides Recorded by a New High-Res All-Sky CCD Camera / J.M. Trigo-Rodríguez, A.J. Castro-Tirado, M. Jelínek, S. Vitek, J. Llorca, and J. Fabregat

    Laboratory directed research and development. Annual report, fiscal year 1995

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