نتایج جستجو برای: systolic and end
تعداد نتایج: 16858719 فیلتر نتایج به سال:
abstract: sayyed mohammad tabatabaee is accounted as one of the effective persons in iran contemporaneoushistory and his role in the events of iran constitution revolution is inevitable. sayyed mohammad tabatabaee from the time of naser al din shah qajar and arrival to iran, informed of the advantages and the basis of constitution, was in the thought of making the iran rule as a constituti...
due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...
the major aim of this study was to investigate the relationship between social and cultural capital and efl students’ critical thinking skills. this study takes this relationship in to account to see if people with different sociocultural status are different regarding their critical thinking skills. to this end, 160 university students majoring in english language and literature, english trans...
Abstract Background and purpose: Recent studies showed that erythropoietin (EPO) despite having role in hematopoiesis, has non-hematopoietic tissue protective effects on ischemia-reperfusion injury. In this study we evaluated the effects of erythropoietin on reducing ischemia-reperfusion injuries after coronary artery bypass graft surgery (CABG). Materials and methods: 60 patients that was ...
Impact of end-diastolic and end-systolic phase selection in the volumetric evaluation of cardiac MRI
Background and purpose: Doppler sonography is a noninvasive diagnostic procedure with no side effect witch is cost effective and the results are rapidly available. Two indices are explained in the field of Doppler sonographic hemodynamic evaluation, PÏ* and RÏ**, Âbnormal ranges are PÏ ≥ 1.8 and RÏ ≥ 0.7 . Ïn previous studies average PÏ in normal conditions was 1.5 and in rejected trans...
We studied the effect of ejection on end-systolic pressure in isolated heart preparations. Ejecting beats were compared with isovolumic beats having the same volume as at end systole. While holding end-systolic volume constant, various stroke volumes, including negative stroke volumes (volume injected during systole), were imposed using a predetermined volume command. After switching contractio...
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