45 research outputs found
Differential growth retardation and Myofibrillar fragmentation in rats submitted to feed restriction and realimentation
Surface charging and electrostatic dust acceleration at the nucleus of comet 67P during periods of low activity
We have investigated through simulation the electrostatic charging of the nucleus of Comet 67 P/Churyumov-Gerasimenko during periods of weak outgassing activity. Specifically, we have modeled the surface potential and electric field at the surface of the nucleus during the initial Rosetta rendezvous at 3.5 AU and the release of the Philae lander at 3 AU. We have also investigated the possibility of dust acceleration and ejection above the nucleus due to electrostatic forces. Finally, we discuss these modeling results in the context of possible observations by instruments on both the Rosetta orbiter and the Philae lander
INVESTIGATIONS INTO THE CYCLING AND RECYCLING OF CERTAIN RADIONUCLIDES THROUGH THE MILK FOOD CHAIN. Final Report, December 15, 1963--December 14, 1966.
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POLONIUM URINALYSIS
A method is described for routine urinalysis for Po by plating on copper at room temperature from acid solution. A discussion is presented based on experience gained by this laboratory in working with the method over a four-year period. (auth