نتایج جستجو برای: time pressure
تعداد نتایج: 2231494 فیلتر نتایج به سال:
Magnesium sulfate is widely used in obstetrics and is drug of choice in two important complications of pregnancy, preeclampsia and preterm labor. The antagonistic effects of magnesium sulfate on calcium ion and on platelet aggregation may lead to changes in bleeding time. This study was conducted to evaluate the effect of magnesium sulfate on bleeding time in women with threatened preterm labor...
purpose: to compare the effect of religious fasting on basal tear secretion (bts), tear break up time (tbt) and intraocular pressure (iop) in ramadan 2005. methods: one-hundred fifty-six healthy male volunteers less than 40 years of age from tehran, zahedan, ahvaz, mashhad and tabriz with no ocular and systemic disease participated in this study. weight, urine specific gravity, bts, tbt and iop...
Background: Arterial pressure is one of the most important physiological variables and often needs to be monitored repeatedly or continuously in perioperative period. Arterial pressure monitoring is one of the standard monitoring in operating room. During general anesthesia, blood pressure can be measured by using a noninvasive arterial pressure method or continuous invasive arterial pressure b...
Introduction: Caffeine is the most widely consumed physiological stimulant which is consumed via natural sources, such as coffee and tea as an energetic drink and dietary supplement. The present study was conducted to identify the effect of different doses of caffeine on time to exhaustion, resting level and cardiovascular responses in male athletes. Methods: Eight male student athletes ...
Low pressure injection molding (LPIM) method in this paper is investigated as a method of forming alumina parts. This is one of the methods of making engineering ceramics with complex shapes and high dimensional accuracy. In this method, a binder system (paraffin wax + carnuba wax) was used as a plastic agent for easy formation of alumina particles. Different parameters such as feedstock temper...
This Paper presents the welding parameterchr('39')s effect (forging pressure, welding time) on macrostructure and mechanical properties of friction welding valve steel HNV3 to Nimonic 80A super alloy. For this purpose, two rods with 20 mm diameters are prepared and with using different parameters (Increase forging pressure and welding time) by friction welding method are welded together. Tensil...
In this study, the kinetics of gas hydrate formation in the presence of tetra-n-butyl ammonium fluoride (TBAF) and cetyl trimethyl ammonium bromide surface active ingredient (CTAB) with zinc nano oxide (ZnO) are investigated and the most important kinetic parameters of hydrate formation such as their induction time and storage capacity were measured. The kinetic experiments were carried out in ...
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