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There are a total of 1467 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Patent Foramen Ovale: Association between the Degree of Shunt by Contrast Transesophageal Echocardiography and the Risk of Future Ischemic Neurologic Events
Author(s): Stone, David A.; Godard, Joel; Godard, Joel; Corretti, mary C.; Kittner, Steven J.; Sample, Cindy; Price, Thomas R.; Plotnick, Gary D.
Abstract: This study investigated whether there is an association between the degree of interatrial shunting across a patent foramen ovale, as determined by saline contrast transesophageal echocardiography, and the risk of subsequent ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2009-01-27
Document ID: 20090004459
Polar Observations of Properties of H and O Conics in the Cusp Near 5300 km Altitude
Author(s): Hirahara, M.; Horwitz, J. L.; Moore, T. E.; Chandler, M. O.; Giles, B. L.; Craven, P. D.; Pollock, C. L.
Abstract: Observations by the thermal ion dynamics experiment (TIDE) on POLAR are used to explore features of low-energy ionospheric ion conical distributions at approximately 5300 km altitude over the southern cusp under different ...
NASA Center: Marshall Space Flight Center
Publication Year: 1996
Added to NTRS: 2008-09-29
Document ID: 19990107380
Low Pressure Experimental Simulation of Electrical Discharges Above and Inside a Cloud
Author(s): Jarzembski, Maurice A.; Srivastava, Vandana
Abstract: A low pressure laboratory experiment to generate sporadic electrical discharges in either a particulate dielectric or air, representing a competing path of preferred electrical breakdown, was investigated. At high pressures, ...
NASA Center: Ames Research Center, Marshall Space Flight Center
Publication Year: 1996
Added to NTRS: 2008-06-26
Accession Number: 97N22930; Document ID: 19970022382; Report Number: NAS 1.26:204699, NASA-CR-204699
Potato growth in a porous tube water and nutrient delivery system
Author(s): Bula, R. J.; Morrow, R. C.; Tibbitts, T. W.
Abstract: Potato (Solanum tuberosum L.) cv. 'Norland', vegetative growth and tuber productivity grown in the porous water and nutrient delivery system (PTNDS) developed by the Wisconsin Center for Space Automation and Robotics were ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040089946
Measurement of LET distribution and dose equivalent on board the space shuttle STS-65
Author(s): Hayashi, T.; Doke, T.; Kikuchi, J.; Takeuchi, R.; Hasebe, N.; Ogura, K.; Nagaoka, S.; Kato, M.; Badhwar, G. D.
Abstract: Space radiation dosimetry measurements have been made on board the Space Shuttle STS-65 in the Second International Microgravity Laboratory (IML-2). In these measurements, three kinds of detectors were used; one is a newly ...
NASA Center: Johnson Space Center
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040089393
Optomotor behaviour in Xenopus laevis tadpoles as a measure of the effect of gravity on visual and vestibular neural integration
Author(s): Pronych, S. P.; Souza, K. A.; Neff, A. W.; Wassersug, R. J.
Abstract: The ability of aquatic vertebrates to maintain their position requires integration of visual and vestibular sensory information. To understand better how aquatic animals integrate such information, we measured the optomotor ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040173085
The August Krogh principle applies to plants
Author(s): Wayne, R.; Staves, M. P.
Abstract: The Krogh principle refers to the use of a large number of animals to study the large number of physiological problems, rather than limiting study to a particular organism for all problems. There may be organisms that are ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040089781
Accurate universal parameterization of absorption cross sections
Author(s): Tripathi, R. K.; Cucinotta, F. A.; Wilson, J. W.
Abstract: We present a simple universal parameterization of total reaction cross sections for any system of colliding nuclei valid for the entire energy range from a few A MeV to a few A GeV. The universal picture presented here ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040088970
Kinetic and mechanistic analysis of nonenzymatic, template-directed oligoribonucleotide ligation
Author(s): Rohatgi, R.; Bartel, D. P.; Szostak, J. W.
Abstract: The role of divalent cations in the mechanism of pyrophosphate-activated, template-directed oligoribonucleotide ligation has been investigated. The dependence of the reaction rate on Mg2 concentration suggests a kinetic ...
NASA Center: NASA (non Center Specific)
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040089772
Managing fatigue in operational settings 2: An integrated approach
Author(s): Rosekind, M. R.; Gander, P. H.; Gregory, K. B.; Smith, R. M.; Miller, D. L.; Oyung, R.; Webbon, L. L.; Johnson, J. M.
Abstract: The six domains that must be addressed in managing fatigue in operational settings are identified, and examples of how the aviation industry is dealing with the problems in each domain are given. Challenges facing healthcare ...
NASA Center: Ames Research Center
Publication Year: 1996
Added to NTRS: 2006-08-02
Document ID: 20040173312
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