Zobrazeno 1 - 10
of 461
pro vyhledávání: '"D. E. Parks"'
Publikováno v:
Journal of Applied Physics. 74:7094-7100
A theory is presented to explain the observed electron emission characteristics of a hollow‐cathode‐based plasma source. The theory is compared with measurements made in a laboratory vacuum facility and is used to predict emission characteristics
Publikováno v:
Journal of Spacecraft and Rockets. 28:292-298
In laboratory experiments, plasma contactors are observed to collect ampere-level electron currents with low impedance. In order to extend the laboratory experience to the low-earth-orbit environment, a model of plasma contactors is being developed.
Autor:
Dawidowski, Javier1,2 javier@cab.cnea.gov.ar, Palomino, Luis Rodríguez1,2, Robledo, José Ignacio2,3, Schmidt, Norberto1,2,3
Publikováno v:
EPJ Web of Conferences. 6/28/2024, Vol. 298, p1-7. 7p.
Publikováno v:
IEEE Transactions on Electrical Insulation. 25:367-370
The interactions between HV systems and the low-earth-orbit environment are reviewed. The mechanism responsible for the observed arcing on negatively biased solar arrays is discussed, and calculations of the plasma density dependence on the voltage t
Publikováno v:
Applied Physics Letters. 59:2808-2810
Experimental evidence suggests that long conduction time (≥ (R18)1 μs) plasma opening switches open more slowly than expected on the basis of magnetic forces, and perhaps even on the basis of plasma erosion. We propose that the slow opening is ass
Publikováno v:
Biochemistry. 31(5)
Two synthetic peptides corresponding to the N- and C-terminal halves of a 23 amino acid sequence representing an immunodominant domain of the simian immunodeficiency virus of macaque origin (SIVmac) were examined for conformational preferences in aqu
Publikováno v:
Journal of acquired immune deficiency syndromes. 4(6)
Recent reports have indicated the possibility that HIV-2 has been introduced into groups at risk for AIDS in Brazil. We studied sera collected in 1987 and 1988 from 1,821 at-risk individuals from diverse regions in Brazil. Of the 1,821 sera, 367 (20%
Autor:
Vaisvil, Alexander vaisvila2@gmail.com, Willmes, Malte, Enriquez, Edward J., Klein, Zachary B., Caldwell, Colleen A.
Publikováno v:
Canadian Journal of Fisheries & Aquatic Sciences. Dec2023, Vol. 80 Issue 12, p1857-1868. 12p.
Autor:
Myrick, Sonia smyrick@nrpa.org
Publikováno v:
Parks & Recreation. 2019 Playground Guide, p12-16. 5p.
Publikováno v:
Journal of Spacecraft and Rockets. 24:367-371
A theory is developed to account for the observed properties of discharges of solar arrays immersed in plasma. The theory is based on the assumption that a thin layer of insulating contaminant covers any metallic surface exposed to the plasma. Quanti