نتایج جستجو برای: pressure
تعداد نتایج: 407653 فیلتر نتایج به سال:
tunnelling through cities underlain by soft soil, commonly associated with soil movement around the tunnels and subsequent surface settlement. the predication of ground movement during the tunnelling and optimum support pressure could be based on analytical, empirical or the numerical methods. the commonly used earth pressure balance (epb) tunneling machines, uses the excavated soil in a pressu...
although measurement of intracranial pressure by noninvasive methods has been suggested, but mainly invasive methods are used for this purpose-increase in episcleral venous pressure can be expected to result in a linear increase in intraocular pressure. congested oculat veins with capillary leakage and hemorrhage are seen when the icp is increased, thus theoretically measurement of intraocular ...
حل مسائل سخت در چند دهه اخیر یکی از چالش های مطرح در حوزه آکادمیک و تحقیقات علمی بوده است. روش های اولیه حل این گونه مسائل، اغلب بر حل دقیق آنها از طریق الگوریتم های دقیق تکیه داشته است. اما با مطرح شدن مسائل سختی با ابعاد بزرگ و به دنبال آن افزایش پیچیدگی این گونه مسائل، ناکارآمدی الگوریتم های دقیق به علت زمان و حافظه بسیار زیادی که در حل مسائل سخت نیاز دارند مشخص گردید. با ظهور الگوریتم ه...
abstractinduced total pressure by flow, including mean and fluctuating components, around a selected chute block in saf stilling basins downstream of an ogee spillway was studied. several pressure holes were selected on various faces of a selected chute block to get enough information regarding the total pressure field. this paper reports the results of an experimental work and measurement of m...
A new model for the vapor phase of a pressurized liquid called "the cluster model: which is originally introduced in this work, along with an accurate equation of state for the liquid phase called the LIR, is used to derive an accurate equation for the vapor pressure of liquid as a function of external pressure. The chemical Potential of both phase have been found to be in good agreement wi...
background: pneumoperitoneum results in respiratory and hemodynamic changes. it is unknown whether hemodynamic changes that last to the recovery room could change recovery criteria. to determine the effect of decrease in intra-abdominal pressure on discharge criteria after laparascopic cholecystectomy. methods: patients with age 25-65 who were candidated for elective laparascopy cholecystectomy...
purpose : to compare the intraocular pressure (iop) lowering effect and side effects of xalatan with generic latanoprost (xalabiost) in adults with open-angle glaucoma or ocular hypertension methods : this was a two-center prospective randomized, crossover clinical trial. eligible patients with open-angle glaucoma or ocular hypertension were sequentially randomized to two parallel study groups ...
aim and backgruond: blood pressure , one of the most important public health problem in the world is the main risk factors for heart disease .depression is the common comorbod psychiatric disorder among patient with medicin conditions .this aim was to compared depression between patients with hypertension and normal people . methods and materials: in the case-control ,143 consecative...
background untrained fingertip palpation has been shown to be unable to adjust endotracheal tube (et) cuff pressure in most intubated patients. objective we determined the impact of a training course of ett cuff adjustment by palpation in attaining a safe cuff inflation pressure. patients and methods twenty-five nurses were asked to adjust the ett cuff pressure to 25 cmh2o by palpation on three...
pressure refers to the feelings an athlete has about performing in a competitive situation. the primary aim of this study was to examine kinematic changes of tennis serves in increasing competitive pressure. 20 semi-professional right-handed male tennis players completed 120 serves under low (normal) and high competitive pressure phases. pressure checks (heart rate and perceived competitive sta...
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