نتایج جستجو برای: tidal volum
تعداد نتایج: 23901 فیلتر نتایج به سال:
Since the 1950s, numerous publications of analytical studies of tidal wave propagations in coastal aquifers have been appeared. This paper reviews the following aspects: importance of tidal effects in studies of coastal areas, analytical studies of tide-induced groundwater flow and related case studies. Finally several important open problems in analytical studies of tide-induced groundwater fl...
background: patients undergone mechanical ventilation need rapid and reliable evaluation of their respiratory status. monitoring of end-tidal carbon dioxide (etco2) as a surrogate, noninvasive measurement of arterial carbon dioxide (paco2) is one of the methods used for this purpose in intubated patients. objectives: the aim of the present trial was to study the relationship between end-tidal c...
Diffusionand perfusion-weighted magnetic resonance imaging (DWI, PWI) allows the arly diagnosis of ischemic brain injury. Regions with pathologic apparent diffusion coefficients (ADC) mismatching w ith pathologic mean transit imes (MTT) or relative cerebral blood volum e (rCBV) are thought o correlate with tissues that can be saved by appropria te treatment. Ten patients with cerebral ischemia ...
La capacit des quations d'tat (EoS) cubiques pour corrler et prdire les quilibres de phases en conditions hyperbares est analyse. Les donnes PVT de corps purs ainsi que les donnes d'quilibres liquide-vapeur (VLE) et volumtriques pour des mlanges binaires, jusqu' 2000 bar sont utilises. Les rsultats des corrlations et des prdictions sont prsents pour l'quation de Peng-Robinso...
An oil spill model coupled with a hydrodynamic model was developed to simulate the spread of oil slick in real marine conditions considering the effects of tidal currents, wind and wave. The hydrodynamic model is verified using the measurements of tidal elevations and current speeds at the Persian Gulf. Effect of various governing factors on oil slick movement, tidal currents, wind and wave, ar...
Nowadays, energy extraction from sea waves as a renewable energy source has been increasingly considered. In addition, the growing demand for energy as a result of development of industrial activities, air pollution caused by the use of fossil fuels and greenhouse problems caused a new challenge for humankind. Tidal energy is a type of energy that is derived from converting the tidal power of t...
Tidal basins are described by major features such as tidal flat, tidal channel, intertidal area, and tidal prism, which have been formulated by some empirical relations based on field observations. Although empirical relations explain some morphological patterns, those are not applicable to all conditions. Due to the lack of observations for different areas and under different geophysical condi...
Background & Aims: Elimination of carbon dioxide is related to the alveolar ventilation, respiratory rate and tidal volume. The aim of this study to determine the effect of mechanical ventilation with different tidal volumes and constant minute ventilation on the end tidal Co2 and oxygen saturation during general anesthesia and to seek optimum parameters of mechanical ventilation during gener...
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