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  • Lunar and Planetary Science and Exploration  (45)
  • ASTROPHYSICS
  • Analytical Chemistry and Spectroscopy
  • Life and Medical Sciences
  • 2005-2009  (45)
  • 1970-1974
  • 1965-1969  (13)
  • 2006  (45)
  • 1965  (13)
Collection
Keywords
Publisher
Years
  • 2005-2009  (45)
  • 1970-1974
  • 1965-1969  (13)
Year
  • 1
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    Characterization and Petrologic Interpretation of Olivine-Rich Basalts at Gusev Crater, Mars (2006)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: Rocks on the floor of Gusev crater are basalts of uniform composition and mineralogy. Olivine, the only mineral to have been identified or inferred from data by all instruments on the Spirit rover, is especially abundant in these rocks. These picritic basalts are similar in many respects to certain Martian meteorites (olivine-phyric shergottites). The olivine megacrysts in both have intermediate compositions, with modal abundances ranging up to 20-30%. Associated minerals in both include low-calcium and high-calcium pyroxenes, plagioclase of intermediate composition, iron-titanium-chromium oxides, and phosphate. These rocks also share minor element trends, reflected in their nickel-magnesium and chromium-magnesium ratios. Gusev basalts and shergottites appear to have formed from primitive magmas produced by melting an undepleted mantle at depth and erupted without significant fractionation. However, apparent differences between Gusev rocks and shergottites in their ages, plagioclase abundances, and volatile contents preclude direct correlation. Orbital determinations of global olivine distribution and compositions by thermal emission spectroscopy suggest that olivine-rich rocks may be widespread. Because weathering under acidic conditions preferentially attacks olivine and disguises such rocks beneath alteration rinds, picritic basalts formed from primitive magmas may even be a common component of the Martian crust formed during ancient and recent times.
    Keywords: Lunar and Planetary Science and Exploration
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Imaging Thermal He(+) from the Lunar Surface (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-19
    Description: Extreme ultraviolet observations of He(+) ions by the EUV instrument on the IMAGE spacecraft have dramatically improved our ability to observe plasmasphere dynamics in the inner magnetosphere. These primarily high latitude observations have revealed the phenomenology of thermal density structures and continue to lead us toward a more complete understanding of inner magnetospheric electric fields and plasmaspheric refilling. Recent analyses have brought attention to the disposition of thermal plasma eroded from the plasmasphere and convected into the outer dayside magnetosphere. The extent to which this plasma is lost into the solar wind or recirculated across the polar cap or through the magnetospheric flanks is an important outstanding question that relates to the influence this plasma has on space weather processes in Geospace. A concept for implementation of enhanced EUV observations from the lunar surface to resolve questions about the global circulation of He(+) plasma in the magnetosphere will be presented. The instrument and science package subsystem elements, including anticipated component capabilities and limitations will be discussed. Attention will also be given to the potential impact of dust contamination.
    Keywords: Lunar and Planetary Science and Exploration
    Type: 2006 Fall American Geophysical Union Meeting; Dec 11, 2006 - Dec 15, 2006; San Francisco, CA; United States
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    The Fourier-Kelvin Stellar Interferometer a Low Complexity, Low Cost Space Mission for High-Resolution Astronomy and Direct Exoplanet Detection (2006)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Fourier-Kelvin Stellar Interferometer (FKSI) is a mission concept for a spacecraft-borne nulling interferometer for high-resolution astronomy and the direct detection of exoplanets and assay of their environments and atmospheres. FKSI is a high angular resolution system operating in the near to midinfrared spectral region and is a scientific and technological pathfinder to the Darwin and Terrestrial Planet Finder (TPF) missions. The instrument is configured with an optical system consisting, depending on configuration, of two 0.5 - 1.0 m telescopes on a 12.5 - 20 m boom feeding a symmetric, dual Mach- Zehnder beam combiner. We report on progress on our nulling testbed including the design of an optical pathlength null-tracking control system and development of a testing regime for hollow-core fiber waveguides proposed for use in wavefront cleanup. We also report results of integrated simulation studies of the planet detection performance of FKSI and results from an in-depth control system and residual optical pathlength jitter analysis.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Astronomical Telescopes and Instrumentation 2006; May 24, 2006 - May 31, 2006; Orlando, FL; United States
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    NASA TECHNICAL REPORTS
  • 4
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    The Future of Asset Management for Human Space Exploration: Supply Classification and an Integrated Database (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: One of the major logistical challenges in human space exploration is asset management. This paper presents observations on the practice of asset management in support of human space flight to date and discusses a functional-based supply classification and a framework for an integrated database that could be used to improve asset management and logistics for human missions to the Moon, Mars and beyond.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Space 2006; Sep 19, 2006 - Sep 21, 2006; San Jose, CA; United States
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    NASA TECHNICAL REPORTS
  • 5
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    Gravity Fields and Interiors of the Saturnian Satellites (2006)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This viewgraph presentation reviews the Gravity Science Objectives and accomplishments of the Cassini Radio Science Team: (1) Mass and density of icy satellites (2) Quadrupole field of Titan and Rhea (3) Dynamic Love number of Titan (4) Moment of inertia of Titan (in collaboration with the Radar Team) (5) Gravity field of Saturn. The proposed measurements for the extended tour are: (1) Quadrupole field of Enceladus (2) More accurate measurement of Titan k2 (3) Local gravity/topography correlations for Iapetus (4) Verification/disproof of "Pioneer anomaly".
    Keywords: Lunar and Planetary Science and Exploration
    Type: Third Annual Meeting of the Asia--Oceania Geosciences Society; Jul 10, 2006 - Jul 14, 2006; Singapore
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    NASA TECHNICAL REPORTS
  • 6
    Electronic Resource
    Electronic Resource
    Implant-induced accessory limbs in urodeles: Fresh, frozen, and boiled tissuesThese investigations were supported by a grant (HD-01234) from the National Institute of Child Health and Human Development of the National Institutes of Health, Bethesda, Maryland, U.S.A.The authors wish to thank Mrs. Linda Bolduan for her expert assistance. (1965)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 117 (1965), S. 213-227 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Implants were made into forelimbs of Triturus viridescens using fresh, frozen and boiled kidney and liver of T. viridescens and R. pipiens. Limbs were recovered at intervals up to 70 days post-implantation.Kidney implants from Wisconsin R. pipiens gave twice as many extensive accessory structures as did Vermont frog kidney. Total induction percentages, however, were similar.Quantitative and qualitative parameters for implant-induction of accessory structures were investigated. The decrease in antigenicity and increased rate of cytolysis of frozen implants resulted in increased similarity between frog and newt kidney in rate and pattern of breakdown and in rates of induction. Modification of rate and duration of the release of the stimulating factor from the implant did not result in induction by liver implants.No evidence was found for any increase in innervation prior to or coincident with blastema formation. Implantation and implant cytolysis may cause hypersensitivity of limb tissues to the normal innervation pattern or trophic stimuli from the implant may act with those from the injured limb tissues to produce growth.The general pattern of host reaction to the implanted material was studied and described.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051170207
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  • 7
    Electronic Resource
    Electronic Resource
    Nerves and muscles of the pregenital abdominal segments of the American cockroach, Periplaneta americana (L.)This research was supported in part by National Institutes of Health grant B-2176.Purdue University Agricultural Experiment Station Journal Paper no. 2425. (1965)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 117 (1965), S. 353-385 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The muscles and motor and sensory nerves of the pregenital abdominal segments were described and discussed in relation to the nerves and muscles of the thorax, as described by other workers. Each of the integumental muscles was named and described with regard to its location, function and innervation. Differences among segments of the same sex and between sexes were noted.A description of a longitudinal muscle, named here the hyperneural muscle, was included. The muscle overlies the abdominal portion of the nerve cord and may be derived from the ventral diaphragm. The most notable features of its structure are chiasmata of fibers which occur at points along its length and which show consistent relationships to the nerve cord and median nerve.A previously undescribed organ, located ventrally at the intersegmental fold, having dual innervation and showing stretch receptor function was described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051170304
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  • 8
    Electronic Resource
    Electronic Resource
    Integumentary changes during moulting of arthropods with special reference to the subcuticle and ecdysial membranePaper no. 5524, Scientific Journal Series, Minnesota Agricultural Experiment Station, St. Paul, Minnesota 55101. Acknowledgment is made for financial support from the National Science Foundation, (Grant GB-365). (1965)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 116 (1965), S. 1-21 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: At or shortly prior to the separation of the cuticle and the epidermis a cuticular layer appears to be added to the inner surface of the old cuticle. The term interzone cuticle is applied to this layer. The interzone cuticle appears to give rise to the ecdysial membrane.Ecdysial membranes are characterized by the fact that they (1) vary in position with respect to the moulting fluid and old cuticle, (2) are generally quite thin, transparent, delicate membranes, (3) contain chitin, (4) vary in their resistance to the action of the moulting fluid, and (5) generally have the same stainng properties as the subcuticle, due primarily to the presence of a mucous material present in the subcuticle which becomes attached to the inner surface of the ecdysial membrane and which is believed to function as a lubricant at ecdysis.The ecdysial membrane and subcuticle are structurally quite different when examined under the electron microscope.No particular evolutionary significance can be ascribed to the existence of an ecdysial membrane  -  such membranes being found all the way from the primitive Collembola to the advanced Hymenoptera. Any possible function(s) of the ecdysial membrane has yet to be discovered. Various functions are suggested for the subcuticle, all of which are consistent with its reactions to various histochemical reagents.Additional observations were made and discussed concerning (1) the reactions of various portions of the cuticle at various stages to the PAS test, (2) the staining reactions of cuticle undergoing enzymatic degradation by the moulting fluid, and (3) the distinct staining reactions of the intersegmental membranes and basement membranes.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051160102
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  • 9
    Electronic Resource
    Electronic Resource
    The occurrence of cardiac muscle in the pulmonary veins of rodentia (1965)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 117 (1965), S. 135-149 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Cardiac muscle fibers have been found to extend from the left auricle along the pulmonary veins as far as the hilus of the lungs in man, in dogs, and in rodents such as the guinea pig. In other rodents, however, the cardiac muscle extends into the veins of the lung itself. To study the occurrence of cardiac tissue in the pulmonary veins, the lungs of selected rodents which represent nine superfamilies have been examined. Only the guinea pig, Cavia porcellus, was limited to having cardiac muscle in the extrapulmonary veins. All of the other 47 species examined had intrapulmonary extensions of cardiac muscle to various distances along the pulmonary veins. It is apparent that this morphological feature is not a specialization among a few families of rodents, but is probably a feature common to almost all of the rodents.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051170202
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  • 10
    Electronic Resource
    Electronic Resource
    The activity of selected soluble enzymes in the avian nasal salt glandThis work has been made possible through USPHS research grants GM-08538 (Dr. L. Z. McFarland) and AM-04732 (Dr. R. A. Freedland). (1965)
    Philadelphia : Wiley-Blackwell
    Journal of Cellular and Comparative Physiology 65 (1965), S. 237-241 
    Details
    ISSN: 0095-9898
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Ten adult western gulls (Larus occidentalis) ranging in weight from 761-1,004 gm were studied. The gulls were fed 3% NaCl in their drinking water. They were killed by decapitation, and the salt glands, weighing 0.51-0.78 gm were cooled, homogenized in 0.14 M KCl, centrifuged at 0-4°C at 20,000 × G for 30 minutes and the supernatant used for all enzymes assays. All assays were conducted at 25°C by observing the changes in absorbancy with time using a Gilford Multiple Absorbance Recorder. The enzymes were assayed by measuring either the appearance or disappearance of NADH or NADPH at 340 mμ. The average units of enzyme activity (the amount of enzyme required to form 1 μM of substrate per minute ) per gram of salt gland were as follows: phosphoglucomutase, 0.62; glucose-6-phosphate dehydrogenase, 1.40; aldolase, 2.86; lactic dehydrogenase, 90.1; isocitric dehydrogenase, 5.08; malic enzyme, 0.92; glutamic-oxaloacetic transaminase, 100.5; and glutamic-pyruvic transaminase, 0.50. The protein content of the salt glands varied from 62.5-87.6 mg protein/gm. On the basis of an adjusted calculation of energy yields from the glycolytic scheme and the Krebs cycle, it would appear that only one-third of the energy derived from these pathways would be necessary to maintain the maximum rate of salt secretion, leaving the other two-thirds for other cellular processes. Glutamate metabolism may also be important as an energy source in the salt gland.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1030650210
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