نتایج جستجو برای: recirculation
تعداد نتایج: 3862 فیلتر نتایج به سال:
To elucidate the connection between blood flow and the localized genesis and development of atherosclerosis and thrombosis at the human carotid artery bifurcation, detailed studies of the flow patterns and distributions of fluid velocity and wall shear rate in this region were carried out using a transparent segment of the carotid artery, prepared from a human subject postmortem, and cinemicrog...
The excess enthalpy flames and their dynamics below the flammability limit are studied by considering two flames that propagate in opposite directions in parallel channels. The model enables the coupling between the external heat loss, convection preheating, diffusion transport and finite rate chemistry. Analytical expressions for the flame temperature, separation distance, and extinction limit...
We present a thermal emission spectrum of the bloated hot Jupiter HAT-P-32Ab from a single eclipse observation made in spatial scan mode with the Wide Field Camera 3 (WFC3) aboard the Hubble Space Telescope (HST). The spectrum covers the wavelength regime from 1.123 to 1.644μm which is binned into 14 eclipse depths measured to an averaged precision of 104 parts-per million. The spectrum is unaf...
Adult male gerbils were submitted to 5-minute cerebral ischemia by bilateral carotid artery occlusion. At the end of ischemia and at various recirculation times ranging from 15 to 120 minutes, brains were frozen in situ and the regional distribution of ATP, glucose, and tissue pH was studied on coronal cryostat sections by bioluminescent and fluoroscopic techniques. During ischemia ATP was comp...
Flow distortion over a forested hill is asymmetric, forming a recirculation region on the lee slope that increases the complexity in understanding atmosphere– biosphere interaction. To understand the complexity, we examine the effect of the geometry of forested hills on recirculation formation, structure, and related CO2 transport by performing numerical simulations over doubleforested hills. T...
Abstract Biogas upgrading from anaerobic digestion of waste frying oils (WFO) was accessed in this study. For that, two bioreactors (Rb-biogas-lift bioreactor with gas and liquid recirculation, Rc-control reactor recirculation) were fed three times per week, a mixture WFO, glycerol volatile fatty acids (VFA). Rb produced 1.4 more biogas higher methane content (79%) than Rc (67%). Higher relativ...
spray drying is one of the most important processes applied in the industry. the equipment used in this process evaporates water in a very short time and so, need a lot of energy. in this work, we used microsoft excel as an analysis tool for the optimization of fuel usage in this dryer. we have described the process in terms of thermodynamic calculations and mass and heat balance equations. our...
the energy requirement of vacuum membrane distillation (vmd) with or without recirculation was modelled using both experimental results and theoretical data. the trends are generally consistent between the theoretical and experimental data. thermal energy contributes the most to the total energy required for the vmd process. to lower the thermal energy cost, waste heat resource and heat recover...
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