cold roll-forming is a process in which the roll of sheet is formed by passing continuously through the set of rotary rollers without changing thickness in a cool way until it is formed to the desired profile. in this paper a parametric study on the section twist angle in roll-forming the non-symmetric channel is presented, using finite element simulation. at first finite element simulation res...

The vast majority of the longitudinal growth of a typical mammalian long bone occurs at the ends of the bone in platelike structures termed growth plates. Both growth plates, one at the proximal end and the other at the distal end, are peripheral extensions of the primary center of ossification, a structure that arises in the midportion of the cartilaginous anlage of the bone-to-be during early...

background: appropriate pain management is needed during the post -partum hospitalization period for preventing cesarean section ( cs) related complications. protocols of post-partum pain management should be planned based on the facilities of each center or region. the aim of current study was to compare the analgesic efficacy of oral methadone and intra muscular (im) pethidine which the latte...

background: uterine rupture at the site of a previous cesarean scar is an uncommon but catastrophic complication of pregnancy, which is associated with significant maternal and fetal morbidity and mortality. case presentation: a 30-year old woman at 24th week of gestation and complaint of pain, contractions and spotting was admitted in royan institute in tehran, iran. she had a past medical his...

objective: to evaluate the ability of lidocaine local injection to relieve postoperative pain in cesarean delivery. materials and methods: this double blinded clinical trial was conducted in a university on 100 women underwent elective cesarean section during march 2012 till march 2013. patients were divided to two groups with random block method (n = 50 in each group). first group received 4mg...

background: the early postoperative feeding after caesarean section (c- section) has remained controversial. this study was designed to evaluate the safety and efficacy of early versus delayed postcaesarean section oral feeding regarding gastrointestinal complications and patients postoperative satisfaction after c- section. methods: this clinical trial study was conducted on 200 pregnant women...