531 |
Understanding the Mechanochemical Energetics of a SPEX 8000M Mixer/millAndersen, Joel M. 18 October 2019 (has links)
No description available.
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532 |
Characterizing the gravity recoverable platinum group mineralsXiao, Zhixian, 1970- January 2008 (has links)
No description available.
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533 |
The Effects of A Medicine Ball Training Program on Bat Velocity of Prepubescent Softball PlayersKobak, Mallory S. 11 June 2013 (has links)
No description available.
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534 |
Recovery Of Hydrogen And Helium From Their Mixtures Using Metal HydridesOztek, Muzaffer Tonguc 01 January 2005 (has links)
Waste streams of hydrogen and helium mixtures are produced at the Kennedy Space Center during purging of the hydrogen systems and supply lines. This process is done prior to and after hydrogen servicing. The purged waste gases are lost to the atmosphere, resulting in an annual loss of 2 million and 0.1 million standard cubic meters of helium and hydrogen, respectively. Recovery of these gases will have an economic benefit. Metals, alloys, and intermetallics are known to react with hydrogen in favorable conditions; therefore, they have the possibility of serving as separating and recovery agents. In this study, Mg2Ni, VTiNi and LaNi5 were studied for the separation of H2 from He, using differential scanning calorimetry and thermal volumetric analysis. The ability of LaNi5 to react with hydrogen reversibly at room temperature was verified, and further analysis focused on this compound. Size reduction and activation of LaNi5 by mechanical milling was investigated using different milling parameters for the purpose of activating the material for hydrogen absorption. Because it has been shown that addition of aluminum to LaNi5 resulted in improved hydriding and dehydriding properties, that system was studied further here. In this study, aluminum was added to LaNi5 by mechanical milling. Hydriding properties and elemental compositions of the samples were determined afterwards. The hydrogen absorption rate and capacity were compared to that of LaNi5. Both LaNi5 and its Al doped derivatives exhibited a reduced rate of hydrogen uptake and a reduced hydrogen capacity in the presence of helium. The effects of coating the samples with either gold-palladium or platinum were investigated. It was observed that coating the samples with Pt reduced the negative effect of He, whereas AuPd coating did not have any effect. Larger scale studies were done using a continuous U-tube hydride reactor, built and tested for separation of H2¬ from a 20:80 H2:He mixture. The amount of hydrogen retained in the bed was determined and found to be less than that for the batch systems.
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535 |
Photoproduction of Neutral Kaons on DeuteriumBantawa, Kabi R. 22 October 2009 (has links)
No description available.
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536 |
The Effects of Ball Burnishing for Aerospace Blade Material 17-4 PH SteelZhang, Tao January 2013 (has links)
No description available.
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537 |
THE RATE ENHANCEMENT OF MULTI-COMPONENT REACTIONS BY HIGH SPEED BALL MILLINGSHUMBA, MAXWELL Z. 23 April 2008 (has links)
No description available.
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538 |
Environmentally friendly synthesis using high speed ball millingWaddell, Daniel C. 20 April 2012 (has links)
No description available.
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539 |
FORGOTTEN BESTSELLER: SITUATING JAMES BALL NAYLOR’S RALPH MARLOWE IN TURN-OF-THE-CENTURY AMERICAN LITERARY HISTORYBeardsley, Sara K. 04 August 2015 (has links)
No description available.
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540 |
Gain scheduling via control signal interpolation: The ball and beam exampleIgnatov, Rouslan January 2002 (has links)
No description available.
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