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Stewart, A.

Publications and source records attributed to Stewart, A..

4 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS2000

Air, Ocean and Climate Monitoring Enhancing Undergraduate Training in the Physical, Environmental and Computer Sciences

Faculty in the Department of Physical, Environmental and Computer Sciences strongly believe in the concept that undergraduate research and research-related activities must be integrated into the fabric of our undergraduate Science and Technology curricula. High level skills, such as problem solving, reasoning, collaboration and the ability to engage in research, are learned for advanced study in graduate school or for competing for well paying positions in the scientific community. One goal of our academic programs is to have a pipeline of research activities from high school to four year college, to graduate school, based on the GISS Institute on Climate and Planets model.

Hope, W. W.↗
NASA NTRS1996

Kuiper Express: A Sciencecraft

The Kuiper Express is a mission to achieve the first reconnaissance of one of the primitive objects in the Kuiper Belt. The Kuiper Express is a sciencecraft mission. It will be launched using a Delta vehicle and will use solar electric propulsion to shape its trajectory in the inner Solar System, while executing two Earth gravity-assist flybys.

Kuiper↗
NASA NTRS1992

On the growth of Hg2Cl(1-x)2Br(x2) single crystals

Single crystals of mixed mercurous halides Hg2X2 (where X = Cl and Br) were grown by the physical vapor transport process. Structural parameters and optical properties were determined to examine the suitability of mixed crystals for acoustooptic devices. Mixed crystals grown in the low concentration region did not show striations or banding. Crystals grown in the high concentration region showed considerable inhomogeneity in the refractive index. Since we had used identical thermal conditions, inhomogeneity was attributed to the solutal convection caused by the difference in densities of mercurous chloride and bromide vapors. A low concentration of dopant did not change the acoustic velocity of the parent components.

Singh, N. B.↗