Space Microgravity

W.S. Newman, D.G. Glosser, J.H. Miller and D. Rohn (1992) "Detrimental Effect of Friction on Space Microgravity Robotics", Proceedings 1992 IEEE Int. Conf. on Robotics and Automation, Nice, France, 1436-1441. 

In the converse situation free of gravity, a drop assumes a perfectly spherical shape. At one point, the U.S. Space program tested this idea with the solidification of ball bearings from molten metal drops in microgravity conditions. 

H. Wiedemeier, Vapor Transport ofHgCdTe in Microgravity, NASA Conference PubHcation 3272, Marshall Space Flight Center, Alabama, May 1994, p. 263. 

The preparation of this manuscript and the research described herein was supported by grants form the Microgravity Sciences Program of the National Aeronautics and Space Adminsitration, by the Mobil Foundation and by a Teacher-Scholar Award from the Camille and Henry Dreyfus Foundation to RAB. 

Ehrenfreund P., et al. (2003). Physics and chemistry of icy particles in the universe answers from microgravity. Planetary and Space Science 51 473-494 Emeline A. V. (2003). Abiogenesis and photo-stimulated heterogeneous reactions in the interstellar medium and on primitive Earth. Relevance to the genesis of life.. Journal of Photochemistry and Photobiology C 3 203. 

Raymer JH, Thomas KW, Pellizzari ED, et al. 1994. A breath sampling device for measuring human exposure to volatile organic compounds in microgravity. Aviation, Space and Environmental Medicine 353-360. 

Figure 7.10 (a) Double-axis rocking curve of a microgravity-grown GaAs crystal after heater failure, (b) Equivalent triple-axis reciprocal space map CuK 004... 

The case of thin CuPc films is also intriguing. When grown by physical vapour transport under unit gravity conditions the films contain mixtures of both a- and -polymorphs (see Fig. 1.26), while under microgravity, again in the Space Shuttle, the films contain predominantly a new polymorphic form designated as M-CuPc... 

Strategic program plan for space radiation health research. Life Sciences Division, Office of Life and Microgravity Sciences and Application, NASA, Washington DC 20546. 

Voorhees s experimental study of low-volume-fraction-solid liquid+solid Pb-Sn mixtures carried out under microgravity conditions during a space shuttle flight enabled a wider range of solid-phase volume fractions to be studied without significant influence of buoyancy (flotation and sedimentation) effects [13]. The rate of approach to the steady-state particle-size distribution in 0.1-0.2 volume-fraction... 

The 46-residue protein crambin has been solved at 0.83 A resolution at 130 K.6 Some proteins have been crystallized in microgravity in space rockets where the convection-free conditions can produce larger and better crystals. RNase A crystals grown in microgravity diffracted x-rays to 1.06 A resolution, approximately 0.2 A higher resolution than previously observed in terrestrially grown RNase A crystals.7 At these very high resolutions, alternate conformations of some side chains may even be seen. 

Space shuttle -microgravity experiments [SPACE PROCESSING] (Vol 22) -use of ablative materials [ABLATIVE MATERIALS] (Vol 1) -use of high temperature alloys [HIGH TEMPERATURE ALLOYS] (Vol 13)... 

Brief periods of microgravity can be achieved on Earth by dropping ohjects from tall structures. Longer periods are created through the use of airplanes, rockets, and spacecraft. The microgravity environment associated with the space shuttle is a result of the spacecraft being in orbit, which is a state of continuous freefall around the Earth. 

Marshall Space Flight Center in Huntsville. Ala. is the lead center for NASA s Microgravity Research Program. The program manages Microgravity Science and Applications Project Offices at the Lewis Research Center in Cleveland, Ohio, the Jet Propulsion Laboratory in Pasadena. Calif., and also project offices ai the Marshall Center. 

Under the project offices, the Microgravity Research Program is divided into nine major areas five science disciplines, three research infrastructure programs and the Space Product Development Office,... 

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