Results 221 to 230 of about 273,506 (260)
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Comparison of resonance conditions in double-barrier structures and triple-barrier structures
Journal of Applied Physics, 1996A theoretical analysis has been carried out to compare the resonance condition in the asymmetric double-barrier structure with that in the symmetric triple-barrier one. It is found that the triple-barrier structure may be considered as two quasidouble-barrier structures whose resonance condition may decide the resonance levels in the triple-barrier ...
X. D. Zhao +3 more
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Dismantling Structural Barriers
Obstetrics & Gynecology, 2022Disparities in health by race, ethnicity, and socioeconomic status within obstetrics and gynecology are well described and prompt evaluation for structural barriers. Academic medicine has a historical role in caring for marginalized populations, with medical trainees often serving as first-line clinicians for outpatient care. The ubiquitous approach of
Asha Belle, McClurg +4 more
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Structured regularization for barrier NLP solvers
Computational Optimization and Applications, 2016zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wei Wan, Lorenz T. Biegler
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SPIN FILTERING IN THE DOUBLE-BARRIER STRUCTURE
International Journal of Modern Physics B, 2005In this paper, we study the electron transport properties in the double non-collinear δ-magnetic barriers within 2-dimensional electron gas. We find that the transmission of spin current depends on the relative orientation of each magnetic barrier. In addition to the well-known unpolarized configurations in an antiparallel magnetic barrier structure ...
Lai, Huan-Wen, Zhao, Xuean, Li, You-Quan
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A channel model with fluctuating barrier structures
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1992Following the theory 'Fluctuations of barrier structure in ionic channels' (Läuger, P., Stephan, W. and Frehland, E. (1980) Biochim. Biophys. Acta 602, 167-180), we constructed a model of a channels with several conformational states. The origin of these conformational states and the source for the transitions from one to the other are given explicitly
J, Nieto-Frausto, B, Kleutsch
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The Thermal Barrier—Structures
Journal of Fluids Engineering, 1955Abstract In the past few years the term “barrier” has become popular in aeronautics. Not so long ago we heard of the sonic barrier which in the minds of many laymen represented a solid wall of compressed air which would not let an airplane through at the speed of sound.
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Fluctuations of barrier structure in ionic channels
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1980In rate-theory analysis of ion transport in channels, the energy of binding sites and the height of activation barriers are usually considered to be time-independent and not influenced by the movement of the ion. The assumption of a fixed barrier structure seems questionable, however, in view of the fact that proteins may exist in a large number of ...
P, Läuger, W, Stephan, E, Frehland
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The Effect of Liposomes on Skin Barrier Structure
Skin Pharmacology and Physiology, 1999The present work deals with the ‘in vivo’ stripping technique to evaluate the percutaneous absorption of sodium fluorescein (NaFl) vehiculized in two different liposome preparations formed by phosphatidylcholine (PC) and lipids mimicking the stratum corneum (SC; ceramides, cholesterol, palmitic acid and cholesteryl sulphate), respectively. Furthermore,
L, Coderch +5 more
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