نتایج جستجو برای: isobaric model
تعداد نتایج: 2106299 فیلتر نتایج به سال:
In this paper, semi-analytical relations of total energy, fuel gain and hot-spot radius in a non-isobaric model have been derived and compared with Schmitt (2010) numerical calculations for shock ignition scenario. in nuclear fusion. Results indicate that the approximations used by Rosen (1983) and Schmitt (2010) for the calculation of burn up fraction have not enough accuracy compared with num...
in isobaric models for inertial confinement fusion it is assumed that the target configurationat stagnation time (maximum compression) consists of two regions, hot spark and cold fuel, respectively.here the conditions of spark formation and ignition in hydrogen equimolar isotopes in central sparkignition are investigated and permissible values of hs and ts are evaluated numerically. by introduc...
background : hyperbaric and isobaric bupivacaine has been shown to reduce bispectral index (bis) during spinal anesthesia. the aim of this study was to compare the effect of isobaric bupivacaine and hyperbaric bupivacaine on the bis during cesarean section with spinal anesthesia. methods : in this double-blind randomized controlled clinical trial, 84 pregnant women with asa ( american society o...
Isobaric and cooling zone of iron ore reactor have been simulated. In this paper, heat and mass transfer equation are formulated to perform the temperature and concentration of gas and solid phase respectively. Temperature profile for isobaric zone is simulated on the range temperature of 873-1163K while cooling zone is simulated on the range temperature of 733-1139K. The simulation results hav...
The properties of charge-exchange excitations of 208Pb with ∆L = 0, i.e., the isobaric analog and Gamow-Teller resonances, are studied within a self-consistent model making use of an effective force of the Skyrme type. The well-known isobaric analog case is used to assess the reliability of the model. The calculated properties of the Gamow-Teller resonance are compared with recent experimental ...
Aims and Background: The baricity of the solutions used for spinal anesthesia significantly affects the distribution and dissemination of local anesthetics into the spinal space. The purpose of this study was to compare the effects of hyperbaric and isobaric bupivacaine for spinal anesthesia in cesarean section. Materials and Methods: This was a randomized double blind clinical trial on sixt...
BACKGROUND Freezing is commonly used for food preservation. It is usually done under constant atmospheric pressure (isobaric). While extending the life of the produce, isobaric freezing has detrimental effects. It causes loss of food weight and changes in food quality. Using thermodynamic analysis, we have developed a theoretical model of the process of freezing in a constant volume system (iso...
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