41,601 to 41,610 of 41,939 Results
Jan 1, 1993
Kwok, R.; Cunningham, G. F., 1993, "Backscatter Characteristics of the Winter Sea Ice Cover in the Beaufort", https://hdl.handle.net/2014/35373, Journal of Geophysical Research, JPL Open Repository
The microwave backscatter statistics of the sea ice cover in the winter Beaufort Sea were characterized using C-band Synthetic Aperture Radar (SAR) data collected by ERS-1. Sea ice backscatter signatures were sampled from SAR image data collected during the winter of 1991/92 and... |
Jan 1, 1993
Kirkam, H., 1993, "Optical Current Transducers for Power Systems: A Review", https://hdl.handle.net/2014/35760, ['IEEE Transactions on Power Delivery', 'IEEE Power Engineering Society: Power Engineering', 'NY, NY'], JPL Open Repository
The technology of the optical measurement of current is reviewed. Several fundamentallydifferent approaches are described. Implementations from a number of manufacturers are examinedso as to highlight the similarities and the differences. Experience with optical current transduce... |
Jan 1, 1993
Williams, R. M.; Jeffries-Nakamura, B.; Ryan, M. A.; Underwood, M. L.; Suitor, J.; O'Connor, D., 1993, "Component Selection, Accelerated Testing, and Improved Modeling of AMTEC Systems for Space Power (abstract)", https://hdl.handle.net/2014/35264, Atlanta, GA, JPL Open Repository
Alkali metal thermal to electric converter (AMTEC) designs for space power are numerous, but selection of materials for construction of long-lived AMTEC devices has been limited to electrodes, current collectors, and the solid electrolyte. AMTEC devices with lifetimes greater tha... |
Jan 1, 1993
Alkalaj, Leon, 1993, "The Application of Microtechnology to Spacecraft On-Board Computing(abstract)", https://hdl.handle.net/2014/35153, not specified, JPL Open Repository
In this report, we will survey recent advances in chip packaging and stacking techniques that allow miniature computers to be developed for space applications. Several orders of magnitude reduction in mass, volume, and power consumption are possible using these techniques. Moreov... |
Jan 1, 1993
Hill, R.; Madore, B.; Freedman, W., 1993, "The Initial Mass function for Massive Stars in the Magellanic Clouds. III. Luminosity and Mass Functions for 14 OB Associations", https://hdl.handle.net/2014/35165, JPL Open Repository
This paper describes the use of UBV photometry of 14 associations in the Large and Small Magellanic Clouds to derive luminosity and mass functions for the most massive stars in the associations. |
Jan 1, 1993
Abbe, B.; Theofylaktos, N., 1993, "ACTS Advanced System Concepts and Experimentation", https://hdl.handle.net/2014/35347, JPL Open Repository
This paper describes the possibility of exploring new experiment and conceptual ideas with an extended ACTS satellite lifetime. |
Jan 1, 1993
Chen, C.-T.; Marder, S. R.; Cheng, L.-T., 1993, "Molecular First Hyperpolarizabilities of a New Class of Asymmetric Squaraine Dyes", https://hdl.handle.net/2014/36594, UNKNOWN, JPL Open Repository
The molecular first hyperpolarizabilities of a series of asymmetric squaraine dyes were measurd by electric-field-induced second harmonic generation; the dyes have negative **-values whose magnitudes are comparable to 4-N,N-dimethylamino-4'-nitrostilbene (DANS). |
Jan 1, 1993
Webster, C.; May, R.; Toohey, D.; Avallone, L.; Anderson, J.; Solomon, S., 1993, "In Situ Measurements of the C1O/HC1 Ratio: Heterogeneous Processing on Sulfate Aerosols and Oolar Stratospheric Clouds", https://hdl.handle.net/2014/35465, JPL Open Repository
This paper describes the first simultaneous in situ measurements of stratospheric C1O and HC1. |
Jan 1, 1993
Lin, Edward I., 1993, "TOPEX Microwave Radiometer Thermal Control: Post-System-Test Modifications and On-Orbit Performance", https://hdl.handle.net/2014/35320, ['Journal of Spacecraft and Rockets', 'AIAA: 28th Thermo Physics Conference', 'Orlando, FL'], JPL Open Repository
The Topex Microwave Radiometer has had an excellent thermal performance since launch. The instrument, however, went through a hardware modification right before launch to correct for athermal design inadequacy that was uncovered during the spacecraft thermal vacuum test. This pap... |
Jan 1, 1993
Bradley, J. G.; Iwanczyk, J. S.; Wang, Y. J., 1993, "Miniaturization in X-Ray and Gamma-Ray Spectroscopy", https://hdl.handle.net/2014/35370, UNKNOWN, JPL Open Repository
The paper presents advances in two new sensor and miniaturized associated electronics technologies which, when combined, can allow for very significant miniaturization, and the reduction of weight and power consumption in x-ray and gamma-ray spectroscopy systems. |