نتایج جستجو برای: buoyancy ratio
تعداد نتایج: 506577 فیلتر نتایج به سال:
We study the Casimir force on a single surface immersed in an inhomoge-neous medium. Specifically we study the vacuum fluctuations of a scalar field with a spatially varying squared mass, m 2 + λ∆(x − a) + V (x), where V is a smooth potential and ∆(x) is a unit-area function sharply peaked around x = 0. ∆(x − a) represents a semi-penetrable thin plate placed at x = a. In the limits {∆(x−a) → δ(...
Control of buoyancy The change in temperature of spermaceti oil necessary to achieve neutral buoyancy The loss of heat from the spermaceti oil necessary to achieve neutral buoyancy The mechanism of losing heat Heat loss via the surface of the head Heat loss via the right naris The time required for heat exchange Heat available for reheating the spermaceti oil Storage of heat Timing of heat loss...
Abstract Introduction: The purpose of this study was to investigate the role of virtual social networks and their attitude towards the students' academic buoyancy of Birjand University of Medical Sciences. Methods: This was a descriptive-correlational study. The population consisted of students of the Faculty of Paramedical Sciences of the Birjand University of Medical Sciences in the academi...
This study set out to examine the relationship between family atmosphere, school value and academic buoyancy mediated by perceived self-efficacy among a group of junior high school students. The present study had a correlational design. The statistical population of the study included all junior high school students in Marvdasht in 2018-19 school year. The participants were 356 students who wer...
Spatial variations of concentrations and temperature across exothermic chemical fronts can initiate buoyancy-driven convection. We investigate here theoretically the spatiotemporal dynamics arising from such a coupling between exothermic autocatalytic reactions, diffusion, and buoyancy-driven flows when an exothermic autocatalytic front travels perpendicularly to the gravity field in a thin sol...
Hepatic triglyceride lipase (HL) is thought to play a role in the formation of low density lipoproteins (LDLs) from small very low density lipoproteins (VLDLs) and intermediate density lipoproteins (IDLs). To analyze the possible physiological role of HL in determining LDL buoyancy, size, and chemical composition, HL activity and LDL were studied in 21 patients with coronary artery disease (CAD...
Large-eddy simulation (LES) equipped with the one-equation subgrid-scale (SGS) model is employed to investigate the mean flows and turbulence over idealized two-dimensional (2D) street canyons in various unstable thermal stratifications. The building-height-tostreet-width (aspect) ratio is equalto unity so the flows inside a street canyon are in the skimming flow regime. Periodic boundaries are...
Introduction and purpose: Students’ perceptions of the learning environment play a vital role in the process of education, buoyancy, and academic performance. This study aimed to investigate the capability of explaining the academic buoyancy and academic performance of health students of Semnan University of Medical Sciences, Semnan, Iran, based on their perception of learning environment. Met...
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