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There are a total of 264771 record(s) matching your query.
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Geomorphic Mapping and Analysis of the Eastern Medusae Fossae Region of Mars
Author(s): Takagi, M.; Zimbelman, J. R.
Abstract: A geomorphic map of the MC-8SE quadrangle on Mars is used to examine hypotheses of origin for the Medusae Fossae Formation, as well as to characterize the regional setting of these enigmatic materials. Additional information ...
NASA Center: NASA (non Center Specific)
Publication Year: 2001
Added to NTRS: 2004-09-16
Document ID: 20010044602
Re-Os Isotopic Evidence for Early Differentiation of the Martian Mantle
Author(s): Brandon, A. D.; Walker, R. J.; Morgan, J. W.; Goles, G. G.
Abstract: Variations in initial 187-Os/188-Os for SNC meteorites correlate with epsilon 142-Nd and epsilon 182-W, indicating that the Re-Os systematics were during the earliest differentiation history of Mars.
NASA Center: NASA (non Center Specific)
Publication Year: 2000
Added to NTRS: 2004-09-16
Document ID: 20000080568
Nb-Zr and Hf-W Isotope Systematics: Applications to Early Solar System Chronology and Planetary Differentiation
Author(s): Yin, Qing-Zhu; Jacobsen, S. B.; Blichert-Toft, J.; Telouk, P.; Albarhde, F.
Abstract: We present new Zr isotope data that provide constraints on the planetary differentiation time scale. Additional information is contained in the original extended abstract.
NASA Center: NASA (non Center Specific)
Publication Year: 2001
Added to NTRS: 2004-09-16
Document ID: 20010044834
Surface Phonons and Surface Plasmons in Quantum Dots and Metal Colloids
Author(s): Henderson, D. O.; Mu, R.; Ueda, A.; Tung, Y. S.; Zhu, Jane G.; White, C. W.; Zuhr, R.
Abstract: Nanophase materials have attracted considerable attention form the scientific and technological communities, The intense interest in this class of materials originates from the fact that reduction of matter to the nanometer ...
NASA Center: NASA (non Center Specific)
Publication Year: 1997
Added to NTRS: 2004-09-16
Document ID: 20010000534; Report Number: URC97177
Mn-Fe Systematics in Pyroxene from Planetary Basalts: An Indicator of Planetary Parentage
Author(s): Papike, J. J.; Karner, J. M.; Shearer, C. K.
Abstract: Pyroxene chemistries from the Earth, Moon, Mars, and 4 Vesta show indications of planetary parentage. Additional information is contained in the original extended abstract.
NASA Center: NASA (non Center Specific)
Publication Year: 2001
Added to NTRS: 2004-09-16
Document ID: 20010045432
Mid-Infrared Spectra of Mercury
Author(s): Cooper, B.; Potter, A. E.; Killen, R. M.; Morgan, T. H.
Abstract: Mid-infrared (8-13 microns) spectra of radiation emitted from the surface of solar system objects can be interpreted in terms of surface composition. However, the spectral features are weak, and require exceptionally high ...
NASA Center: NASA (non Center Specific)
Publication Year: 2001
Added to NTRS: 2004-09-16
Document ID: 20010124836
Application of Synergistic Multipayload Assistance with Rotating Tethers (SMART) Concept to Outer Planet Exploration
Author(s): Forward, R. L.; Hoyt, R. P.; Nordley, G. D.
Abstract: We propose an innovative approach to outer planet exploration using the Synergistic Multipayload Assistance with Rotating Tethers (SMART) concept invented by Gerald David Nordley. The basic concept can be implemented in many ...
NASA Center: NASA (non Center Specific)
Publication Year: 2001
Added to NTRS: 2004-09-16
Document ID: 20010041262
Large Scale Dynamic Systems and Connective Stability
Author(s): Sathananthan, S.; Wodimu, Borena
Abstract: One of the foremost challenges to system theory in the present-day advanced technological world is to overcome the increasing size and complexity of the corresponding mathematical models. Since the amount of computational ...
NASA Center: NASA (non Center Specific)
Publication Year: 1997
Added to NTRS: 2004-09-16
Document ID: 20010000531; Report Number: URC97173
Quantifying X-Ray Pleochroism Effects in Synchrotron Micro-XANES Microanalyses of Elemental Oxidation States: Feldspar and Biotite
Author(s): Delaney, J. S.; Dyar, M. D.; Sutton, S. R.
Abstract: X-ray pleochroism is a predictable source of scatter in synchrotron microXANES analyses of elemental oxidation states. The magnitude of the effect is illustrated and a procedure to compensate for it has been implemented, ...
NASA Center: NASA (non Center Specific)
Publication Year: 2001
Added to NTRS: 2004-09-16
Document ID: 20010045071
Planetary Science Research Discoveries (PSRD): Effective Education and Outreach Website at http://www.soest.hawaii.edu/PSRdiscoveries
Author(s): Taylor, G. J.; Martel, L. M. V.
Abstract: Planetary Science Research Discoveries (PSRD) website reports the latest research about planets, meteorites, and other solar system bodies being made by NASA-sponsored scientists. In-depth articles explain research results ...
NASA Center: NASA (non Center Specific)
Publication Year: 2000
Added to NTRS: 2004-09-16
Document ID: 20000080950
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