in this paper, the deep drawing process of tailor welded blanks is simulated using the finite element modelling and verified using the experimental results available in the literature. then the effect of die and material properties on the welding line movement is investigated. it is seen that the most effective material parameters on weld line movement are different between sheet metal thicknes...

introduction: several lines of evidence suggest that the factor xiii (fxiii) 100 g/t polymorphism may influence susceptibility to deep venous thromboembolism (dvt). to explore this hypothesis, we investigated whether this polymorphism is associated with the predisposition to dvt. we also predict the possible impact of residue substitution at codons 34 (val34leu) in a subunits of the fxiii coagu...

introduction deep vein thrombosis is one of the most important complications in patients with spinal cord injury. this study compares the effects of mechanical prophylaxis with or without pharmacological prophylaxis on prevention of deep vein thrombosis in patients with spinal cord injury. materials and methods we conducted a double blind clinical trial study with 75 cases. these patients were ...

introduction: the main inhibitors of coagulation pathway are antithrombin (at), protein c and protein s. these inhibitors are necessary to prevent thromboembolism. hereditary deficiency of inhibitors is the main cause of alteration in balance between the anti-clotting and the formation of thrombin. patients with this abnormality are susceptible to venous thromboembolism (vte). two major clinica...

. this paper presents the results of an experimental investigation on shear strength enhancement of reinforced concrete deep beams externally reinforced with fiber reinforced polymer (frp) composites. a total of six deep beam specimens of two different classes, as-built (unstrengthened) and retrofitted were tested in the experimental evaluation program. two composite systems namely carbon/epoxy...

nowadays deep excavations are needed for construction of foundation of high rise buildings, providing space for parking and etc. in some cases deep excavations may be constructed in the vicinity of the subway tunnels and causes unpredicted extra displacements and internal forces in tunnel lining of tunnels which were not designed for them and consequently affect serviceability of tunnel. theref...

a new method for increasing ldr in deep drawing is application of anti-lock braking system (abs) on blank holder. in this method, instead of applying a constant force on blank and control the metal flow, the abs system holds and releases the blank several times (20 to 50 times) which results increasing ldr. this study investigates the effect of different parameters of abs on improving the condi...

for better understanding of tehran ground water, samples were taken randomly from 340 out of 655 deep & semi deep wells in 1993, which dug by tehran water supply and sewage engineering company. 260 water specimens were examined chemically and physically and compared with the 1993 world health organization (who) and food and agriculture organization (fao) criteria and analyzed statistically. log...

background: deep vein thrombosis (dvt) can be an ethnicity related disease and an important health issue for health-care systems. thus, domestic recognition of risk factors and disease characteristics seem to be inevitable. this study was designed to evaluate the epidemiology, basic characteristics, and risk factors in patients with dvt. materials and methods: in this descriptive cross-sectiona...

backgrounds: there are controversies among surgeons about prophylaxis of deep vein thrombosis (dvt) in laparoscopic cholecystectomy. the aim of this study was the assessment of patients’ condition after laparoscopic cholecystectomy without any prophylactic measure. methods: 100 cases of laparoscopic cholecystectomy without dvt prophylaxis were followed by duplex scanning in the first postoperat...