ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • NONMETALLIC MATERIALS  (3)
  • spatial ability  (1)
  • 1975-1979  (4)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Parent-offspring resemblance for specific cognitive abilities in Korea (1978)
    Springer
    Behavior genetics 8 (1978), S. 43-52 
    Details
    ISSN: 1573-3297
    Keywords: cognitive ability ; spatial ability ; heritability ; sex linkage ; assortative mating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Regressions of offspring on midparent value for tests of specific cognitive abilities in Korea were considerably higher than those for Americans of Japanese ancestry or Americans of European ancestry tested in Hawaii. This greater parent-offspring resemblance in Korea may be due to the particular method of test administration or to an increased genetic variance resulting from assortative mating. The pattern of parent-child correlations for three relatively pure tests of spatial ability and for the spatial factor did not conform to that of a sex-linked recessive character.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01067703
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    facet.materialart.
    Unknown
    Qualification of black electrically conductive paint (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A paint having low electrical resistance has been developed. Using a low outgassing polyurethane resin, specific amounts of conductive carbon particles were added to produce paint compositions having a range of electrical resistance. Methods of testing for electrical resistance are discussed. The adhesion of these paints has been tested successfully over the temperature range from liquid nitrogen temperature up to 80 C (176 F).
    Keywords: NONMETALLIC MATERIALS
    Type: New horizons - Materials and processes for the eighties; Nov 13, 1979 - Nov 15, 1979; Boston, MA
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Techniques used for limiting degradation products of polymeric materials for use in the space environment (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Techniques are discussed for limiting or controlling the degradation products (outgassing) of polymeric materials in the space environment. One technique, now ASTM E-595-77, is used to screen out those materials which lose greater than 1% Total Mass Loss when in vacuum for 24 hours at 125 C and which have more than 0.10% Collected Volatile Condensable Materials condensing on a collector surface at 25 C. Examples of silicone materials which are high and low in outgassing are given. The numerous mechanical motions in spacecraft experiments require liquid lubricants which also might degrade in space. Labyrinth seals and barrier films are utilized to limit the degradation of or from these lubricants. A recoverable in-flight experiment has been proposed for making definitive measurements of how effective these techniques are in limiting the amounts and escape paths of outgassed molecules.
    Keywords: NONMETALLIC MATERIALS
    Type: Conference on the Environmental degradation of engineering materials; Oct 10, 1977 - Oct 12, 1977; Blacksburg, VA
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 4
    facet.materialart.
    Unknown
    Materials testing for spacecraft use (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A technique has been developed for determining the outgassing characteristics of materials intended for spacecraft use. A measurement of the total mass loss (TML) and of the collected volatile condensable materials (CVCM) is used as a guide for selecting those materials low in outgassing. The data were used to compare the outgassing from two conductive black paints. In addition, the apparatus was also used in an attempt to simulate expected launch temperatures by collecting the outgassed molecules on a glass plate, which simulates a nearby thermal control surface. The glass plate was then irradiated in vacuum by simulated sunlight. Transmittance patterns of the clean glass plate and also with the condensed material on it were compared with the transmittance pattern after irradiation of the condensate. The transmittance patterns showed a drastic change. The resultant discoloration indicated the detrimental effects of the contamination and aided in selecting the better conductive paint. Additional tests utilizing an aluminized mirror collector plate have been run to show the effect of irradiation upon the CVCM from certain different classes of materials often used on spacecraft.
    Keywords: NONMETALLIC MATERIALS
    Type: The enigma of the eighties: Environment, economics, energy; Twenty-fourth National Symposium and Exhibition; May 08, 1979 - May 10, 1979; San Francisco, CA
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...