+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Subject + Availability Options Selected Navigations: [Remove] Publication Year > 1971-1980 > 1975 [x] Item/Media Type > Journal Article [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 2448 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order Prev 1 2 3 4 5 6 7 8 9 10 Next >> Stellar evolution at high mass with semiconvective mixing according to the Ledoux criterion Author(s): Stothers, R.; Chin, C.-W. Abstract: The effects of semiconvective mixing are investigated in evolutionary sequences of models for stars of 10, 15, and 30 solar masses with four different initial chemical compositions. The models are constructed using the ... NASA Center: Goddard Space Flight Center Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A35666; Document ID: 19750051594 The coronal structure of active regions Author(s): Landini, M.; Monsignori Fossi, B. C.; Krieger, A.; Vaiana, G. S. Abstract: A four-parameter model, which assumes a Gaussian dependence of both temperature and pressure on distance from center, is used to fit the compact part of coronal active regions as observed in X-ray photographs from a rocket ... NASA Center: NASA (non Center Specific) Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 76A17431; Document ID: 19760034465 Analysis of liquid metal embrittlement from a bond energy viewpoint Author(s): Kelley, M. J.; Stoloff, N. S. Abstract: Absorption induced embrittlement of solid metals by certain liquid metals is analyzed through an Engel-Brewer calculation of the solid-liquid interaction energy, and of the effect of the latter in reducing fracture surface ... NASA Center: NASA (non Center Specific) Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A19638; Document ID: 19750035566 Materials processing in space - New challenges for industry Author(s): Bredt, J. H.; Montgomery, B. O. Abstract: A summary is presented of NASA's activity in materials research in zero-g. Very simple experiments to determine the effects of zero-g upon solidification processes, upon heat flow, convection and mass transport, and upon ... NASA Center: Marshall Space Flight Center Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A31439; Document ID: 19750047367 Ultraviolet optical constants of water and ammonia ices Author(s): Browell, E. V.; Anderson, R. C. Abstract: A method reported by Tempelmeyer and Mills (1968) for the determination of real refractive indices of transparent films was used in the investigation. It was found that the fringe period for a transparent film can be used to ... NASA Center: Langley Research Center Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A39797; Document ID: 19750055725 Comparisons of pilot performance in simulated and actual flight Author(s): Billings, C. E.; Gerke, R. J.; Wick, R. L., Jr. Abstract: Five highly experienced professional pilots performed instrument landing system approaches under simulated instrument flight conditions in a Cessna 172 airplane and in a Link-Singer GAT-1 simulator while under the influence ... NASA Center: Ames Research Center Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A25415; Document ID: 19750041343 An optimized output stage for MOS integrated circuits Author(s): Lin, H. C.; Linholm, L. W. Abstract: An output device for optimizing propagation delay and minimizing chip area is described. An optimum means of tapering the output stages to minimize propagation delay is determined. The minimum delay is a function of the ... NASA Center: NASA (non Center Specific) Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A27371; Document ID: 19750043299 The Hard X-ray experiment on the Astronomical Netherlands Satellite Author(s): Gursky, H.; Schnopper, H.; Parsignault, D. Abstract: The Hard X-ray Experiment flown on the Astronomical Netherlands Satellite is described. The instrument consists of two parts. One is a large-area detector of about 60 sq cm in total area, sensitive in the energy range ... NASA Center: NASA (non Center Specific) Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 76A13014; Document ID: 19760030048 Dosimeter design, construction, and implantation Author(s): Winter, D. L.; Suri, K.; Durso, J. A.; Cota, F. L.; Ashley, W. W.; Binnard, R. M.; Haymaker, W.; Benton, E. V.; Cruty, M. R.; Zeman, W. Abstract: To detect the passage of cosmic ray particles through the heads of the pocket mice during the Apollo XVII flight, a 'monitor' (dosimeter) composed of plastics was prepared and implanted under the scalp. The monitor was ... NASA Center: Ames Research Center Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A29592; Document ID: 19750045520 Mineralogy and petrology of sample 67075 and the origin of lunar anorthosites Author(s): Mccallum, I. S.; Okamura, F. P.; Ghose, S. Abstract: No Abstract Available NASA Center: NASA (non Center Specific) Publication Year: 1975 Added to NTRS: 2004-11-03 Accession Number: 75A33455; Document ID: 19750049383 Prev 1 2 3 4 5 6 7 8 9 10 Next >> + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007