نتایج جستجو برای: lost foam casting lfc
تعداد نتایج: 103097 فیلتر نتایج به سال:
This article presents a Particle Swarm Optimization with timevarying acceleration coefficients (TVAC-PSO) technique for the design of Integral (I) controller for the Load Frequency Control (LFC) system. The LFC modeling is carried out for Multi-area interconnected power systems (MAIPS). The power system comprises non-reheat thermal unit in each control area. The controller gains have been optim...
Objective: A Modified Shuffled Frog Leaping (MSFL) algorithm based Multi-stage Fuzzy (MSF) PID controller is proposed in this paper to solve the Load Frequency Control (LFC) problem in a deregulated environment. The power system LFC problems are caused by small load perturbations which continuously disturb the normal operation of power system. The objectives of LFC are to minimize the transient...
Many adults have poor dietary habits and few studies have focused on mechanisms underlying these behaviors. This study examined psychosocial determinants of dietary behavior change in university employes across a 5-month period. Participants completed measures of fruit and vegetable consumption (FVC) and low fat food consumption (LFC) and social cognitive constructs. Multiple regression analyse...
This paper presents the Load frequency control (LFC) of a multi-source power system with Redox flow batteries (RFB). The power system comprises non-reheat thermal, hydro and gas generating units. RFB is integrated to the LFC system to improve the dynamic responses. The proportional plus integral (PI) controller is designed using the PSO technique. Dynamic responses are obtained by giving 1% ste...
Nicotinic acid (NA) regresses atherosclerosis in human imaging studies and reduces atherosclerosis in mice, mediated by myeloid cells, independent of lipoproteins. Since GPR109A is expressed by human monocytes, we hypothesized that NA may drive cholesterol efflux from foam cells. In THP-1 cells NA suppressed LPS-induced mRNA transcription of MCP-1 by 76.6±12.2% (P<0.01) and TNFα by 56.1±11.5% (...
Lumbar model is an artificial bone that commonly used in surgical training to simulate working with the human-like for trainer. The common lumbar made of rigid polyurethane (PU) foam and produced using casting. However, current expensive has limitations representing real human lumbar, especially geometry, visuals, haptics. Therefore, alternative method fabricating models indirect additive manuf...
Net cholesterol efflux from cholesterol-loaded macrophages, i.e., foam cells, was induced by incubating the foam cells with high density lipoprotein3 (HDL3). However, when the incubation system included rat serosal mast cells stimulated to trigger exocytosis of their cytoplasmic secretory granules, the ability of HDL3 to induce cholesterol efflux was largely lost. This loss was found to be due ...
conclusions it seems that hp eradication per se might not affect lfc, lft, lipid profile, and insulin resistance in dyspeptic nafld patients. results one hundred (49 males) patients with the mean age of 43.46 (± 11.52) were studied. repeated measure anova showed a significant reduction in lfc, anthropometric measurements, and laboratory parameters (except for hdl) in the both groups during the ...
This paper presents in a systematic way problems encountered in the construction of Lyapunov function candidates for descriptor systems. The solutions to some of the major difficulties in the application of Lyapunov’s direct method to descriptor systems are presented. Some new results regarding the extension of Lyapunov’s direct method tied to the construction of the Lyapunov functions are give...
BACKGROUND Functional/physiological evaluation of coronary artery stenoses may be more important than anatomical measurements of severity. Optimization of thresholds for stenosis intervention and treatment endpoints depend on coupling functional hemodynamic and anatomical data. We sought to develop a single prognostic parameter correlating stenosis-specific anatomy, pressure gradient, and veloc...
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