Results 281 to 290 of about 390,411 (306)
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Depletion region effects in Mg-doped GaN
Journal of Applied Physics, 2000The deep nature of the Mg acceptor will have important implications for the performance of high-speed GaN-based bipolar devices. In this work, the effect of the deep acceptor on the band bending within the depletion region is examined in detail.
Peter Kozodoy +2 more
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Analysis of an MIS transmission line with a depletion region
APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577), 2002The dispersion characteristics of an MIS (metal-insulator-semiconductor) transmission line are studied using a spectral-domain integral-equation approach. The semiconductor is characterized by a conductivity that is pertinent to the majority carrier concentration of the semiconductor, and the depletion region is modeled as a lossless dielectric.
null Chung-I G Hsu +2 more
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Depletion regions and electronic surface states in doped semiconductor superlattices
Physical Review B, 1988The electronic level structure of a type-I semiconductor superlattice such as GaAs/Al/sub x/Ga/sub 1-//sub x/As has been calculated self-consistently in a tight-binding envelope approximation. Fermi-level pinning due to defects at the ends of the superlattice gives rise to novel surfacelike states lying in electronic subband gaps and having localized ...
, Zhang, , Ulloa
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Are We Depleted of Research Questions in Regional Anaesthesia?
International Journal of Regional AnaesthesiaRegional anaesthesia has significantly evolved, shaping pain management in surgery. This article examines whether research question in this field are becoming exhausted, or if new avenues remain unexplored. Key trends include the integration of ultrasound guidance for precision, optimizing drug combinations for enhanced safety and efficacy, and ...
Anju Grewal +2 more
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Regional depletion of adenosine triphosphate, phosphocreatine, and glucose in ischemic hippocampus
Metabolic Brain Disease, 1988The selective vulnerability of pyramidal neurons in the CA1 hippocampal region in ischemic rat brain may be preceded by regional alterations of energy metabolism during early reperfusion. We measured ATP, phosphocreatine (PCr), and glucose in paramedian and lateral CA1 and in an area showing little postischemic cell loss, CA2.
L C, Pettigrew +4 more
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Peculiarity of Depletion Region in Diamond pn-Junction
Japanese Journal of Applied Physics, 2003Ionized dopant and carrier profiles in the pn-junction of diamond with a deep phosphorus donor and a boron acceptor are theoretically analyzed by simply solving a one-dimensional Poisson equation. The width of the depletion layer is around two times larger than that of the space-charge layer since there exists a transition region at the depletion layer
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Taurine depletion, a novel mechanism for cardioprotection from regional ischemia
American Journal of Physiology-Heart and Circulatory Physiology, 1997Three processes that have been implicated in ischemic injury are impaired Ca2+movement, altered osmoregulation, and membrane remodeling. Because the amino acid, taurine, affects all three processes, it seemed logical that changes in the myocardial content of taurine might affect ischemic injury.
S N, Allo, L, Bagby, S W, Schaffer
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Changes in the Regional Emissions of Greenhouse Gases and Ozone-Depleting Compounds
Environmental Science & Technology, 2003In the wake of the Kyoto and Montreal Protocols, there is a need to verify whether policies to reduce emissions are working. We present data showing that emissions of ozone-depleting compounds, such as the chlorofluorocarbons and methyl chloroform, are decreasing from some regions of the United States but emissions of the greenhouse gases do not appear
M Aslam K, Khalil, Reinhold A, Rasmussen
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Evidence for nucleosome depletion at active regulatory regions genome-wide
Nature Genetics, 2004The identification of nuclease-hypersensitive sites in an active globin gene and in the 5' regions of fruit fly heat shock genes first suggested that chromatin changes accompany gene regulation in vivo. Here we present evidence that the basic repeating units of eukaryotic chromatin, nucleosomes, are depleted from active regulatory elements throughout ...
Cheol-Koo, Lee +4 more
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