نتایج جستجو برای: valve point effects optimization
تعداد نتایج: 2395638 فیلتر نتایج به سال:
Abstract Economic dispatch (ED) of thermal power units is significant for optimal generation operation efficiency systems. It a typical nonconvex and nonlinear optimization problem with many local extrema when considering the valve-point effects, especially large-scale Considering that differential evolution (DE) efficient in locating global region, while gain-sharing knowledge-based algorithm ...
Background and aims Prevention of potential accidents and safety promotion in chemical processes requires systematic safety management in them. The main objective of this study was analysis of important process equipment components failure modes and effects in H2S and CO2 isolation from extracted natural gas process. Methods This study was done in sweetening unit of an Iranian gas refi...
Primary heart tumors are not common. Âlthough myxoma is the most common tumor of the heart, mitral valve myxoma is extremely rare. The patient is a 55 years old woman who had atypical retrosternal pain, retinal artery emboli and visual deficit. Ïn transesophageal echocardiography a (4x3x3) cm mass was detected in posterior leaflet of mitral valve. The posterior leaflet of mitral valve was tot...
Prolapsed Mitral Valve Syndrome is a common, benign disorder with prevalence of %0.3-6 in population. This syndrome also is known as Barlows Syndrome and Flaapy Mitral Valve Syndrome. Prolapsed Mitral Valve is the dropping of one or two mitral valve leaflet(s) into the left atrium during ventricular systole. This malformation leads to incomplete closing of mitral valve and regurgitates the bloo...
Massive popularity of plug-in electric vehicles (PEVs) may bring considerable opportunities and challenges to the power grid. The scenario is highly dependent on whether PEVs can be effectively managed. Dynamic economic dispatch with (DED PEVs) determines optimal level online units PEVs, minimize fuel cost grid fluctuations. Considering valve-point effects transmission losses a complex constrai...
the history of closed mitral valve comissurotomy (cmvc) and its indication is discussed in this article. however many of the patients undergo (ptmc) these days as a new procedure and of course more effective and easier way whenever is indicated, yet, (cmcv) should be considered as a simple, and effective surgery when indicated, especialy in third world countries in which economical, social and ...
The failure probability of the structures is one of the challenging problems in structural engineering. To obtain the reliability index introduced by Hasofer and Lind, one needs to solve a nonlinear equality constrained optimization problem. In this study, four of the most recent metaheuristic algorithms are utilized for finding the design point and the failure probability of problems with cont...
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