+ 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 + Publication Year + Subject + Availability Options Selected Navigations: Item/Media Type > NASA Tech Brief [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 18934 record(s) matching your query. Sorted by: Date Added To NTRS in Ascending order Prev 1 2 3 4 5 6 7 8 9 10 Next >> Image-Enhancement Aid For The Partially Sighted Author(s): Lawton, T. A.; Gennery, D. B. Abstract: Digital filtering enhances ability to read and to recognize objects. Possible to construct portable vision aid by combining miniature video equipment to observe scene and display images with very-large-scale integrated ... NASA Center: Jet Propulsion Laboratory Publication Year: 1989 Added to NTRS: 2005-09-30 Accession Number: 89B10278; Document ID: 19890000278; Report Number: NPO-17307 Liquid-Crystal Light Valve Enhances Edges In Images Author(s): Chao, Tien-Hsin; Liu, Hua-Kuang Abstract: Experiments show liquid-crystal light valve (LCLV) exhibits operating mode in which it enhances edges in images projected on it. Operates in edge-enhancing mode (or in combination of edge-enhancing and normal modes) by ... NASA Center: Jet Propulsion Laboratory Publication Year: 1991 Added to NTRS: 2005-09-30 Accession Number: 91B10144; Document ID: 19910000144; Report Number: NPO-17768 High strength, medium density molded foam Author(s): Fender, J. R. Abstract: Toluene diisocyanate-based polyurethane produces molded-to-size foam products. Formulation techniques optimize dimension stability, strength and moldability. NASA Center: NASA (non Center Specific) Publication Year: 1972 Added to NTRS: 2005-09-30 Accession Number: 72B10235; Document ID: 19720000235; Report Number: AEC-10053 Cost Effectiveness of Hybrid Solar Powerplants Author(s): Wen, L. C.; Steele, H. L. Abstract: Report discusses cost effectiveness of high-temperature thermal storage system for representative parabolic dish solar powerplant. Economic viability of thermal storage system assesses; cost and performance projections made; ... NASA Center: Jet Propulsion Laboratory Publication Year: 1983 Added to NTRS: 2005-09-30 Accession Number: 83B10149; Document ID: 19830000149; Report Number: NPO-15735 Dynamic, High-Temperature, Flexible Seals Author(s): Steinetz, Bruce M.; Sirocky, Paul J. Abstract: Dynamic, flexible ceramic seals developed for use at high temperatures in high-performance, variable-geometry, hypersonic airplane engines. Stacked ceramic wafers pressed against stationary sidewall by pressure in one or ... NASA Center: Glenn Research Center Publication Year: 1992 Added to NTRS: 2005-09-30 Accession Number: 92B10173; Document ID: 19920000173; Report Number: LEW-14695 Analyzing Multirate-Sampled Systems Author(s): Hendrix, N. Abstract: New method available for monitoring stability of system on basis of data sampled at multiple rates--in particular, at two rates, one of which is twice frequency of other. Method is called Multirate Matrix Frequency Response ... NASA Center: Marshall Space Flight Center Publication Year: 1982 Added to NTRS: 2005-09-30 Accession Number: 81B10264; Document ID: 19810000264; Report Number: MFS-25541 Clamp for detonating fuze Author(s): Holderman, E. J. Abstract: Quick acting clamp provides physical support for a closely confined detonating fuse in an application requiring removal and replacement at frequent intervals during test. It can be designed with a base of any required ... NASA Center: NASA (non Center Specific) Publication Year: 1968 Added to NTRS: 2005-09-30 Accession Number: 68B10072; Document ID: 19680000072; Report Number: MFS-13399 A self-tuning filter Author(s): Deboo, G. J.; Hedlund, R. C. Abstract: Self-tuning filter automatically adjusts its center frequency to track signal frequency. This permits the use of a filter with a bandwidth smaller than the range of input signal frequencies. NASA Center: NASA (non Center Specific) Publication Year: 1970 Added to NTRS: 2005-09-30 Accession Number: 70B10337; Document ID: 19700000325; Report Number: ARC-10264 Alternative Habitats For First Lunar Outpost Author(s): Fowler, Charles R.; Imtiaz, Kauser S.; Vas, Irwin E.; Woodcock, Gordon R. Abstract: Report describes investigation of alternative design concepts for habitable structures at outpost to be established on Moon. Beginning with baseline habitat concept derived from habitat module of Space Station Freedom, ... NASA Center: Marshall Space Flight Center Publication Year: 1995 Added to NTRS: 2005-09-30 Accession Number: 95B10541; Document ID: 19950070362; Report Number: MFS-28953 Ionene treatment of surfaces stimulates cell growth Author(s): Rembaum, A.; Ingram, M.; Schmink, A. S.; Rounds, D. E. Abstract: Number of cells adhering to walls of container can be increased by chemically pretreating walls. Polyelectrolyte, ionene, gives more effective pretreatment than any currently used chemicals. NASA Center: Jet Propulsion Laboratory Publication Year: 1975 Added to NTRS: 2005-09-30 Accession Number: 75B10121; Document ID: 19750000121; Report Number: NPO-13421 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