نتایج جستجو برای: 100 water saturation and 80 gas
تعداد نتایج: 17059722 فیلتر نتایج به سال:
a colorimetric method for detection and assay of mustard gas in urine after addition of thymolphthalein is reported. the detection limit was 80 ng/ml of llrine. mustard gas could also be detected in urine after extraction with gas chromatography using fid detector. the detection limit was 10 ng/ml. in addition, thiodiglycol, a metabolite of mustard gas, could be converted to mustard with concen...
The contribution of water to the quantitative determination of hemoglobin concentration and saturation by near-infrared spectroscopy in turbid media was investigated. The study consisted of in vitro measurements of an aqueous suspension containing Liposyn, bovine blood, and yeast buffered at pH 7.2. The optical coefficients of the medium (ma;0.03 to 0.08 cm −1, ms8 ; 6 cm −1 at wavelengths of 7...
BACKGROUND Although recommendations in oxygenation and gas exchange monitoring in the neonatal intensive care unit (NICU) are available, little is known of the current practice. AIM To evaluate the current practice in oxygenation and gas exchange monitoring of the NICUs in the Netherlands. METHODS An online survey-based questionnaire concerning preferences and current practice of monitoring...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
The existing volumetric approach was honored by considering the effects of oil and gas saturations on the evaluation of geothermal resources in oil and gas reservoirs. The main reason to do so was that oil and gas phases may not be simply substituted by water because the values of the specific heat of oil and gas are smaller than that of water. We selected an oil reservoir, Hexiwu, from Huabei ...
Recently, special type of fuel cells has been developed that operates in a Dead End mode. Working in this condition, the Dead-End fuel cell is supplied withhydrogen almost at the same rate of consumption. It is noteworthy to mention thatall of the water transport mechanisms have been considered in this simulation.Water accumulation that is directly proportional to the cell current is of a grea...
Background & Aim: The role of caffeine as a cerebral stimulant for improving respiratory indicators in the mechanically ventilated patients is unclear. The purpose of this study was to evaluate the effect of coffee consumption on respiratory indicators among the mechanically ventilated patients in the Intensive Care Unit (ICU). Methods & Materials: A double blind, randomized clinical trial (IR...
Ž . Ž . Ž . Ž . Feed intake FI , feed efficiency FE , protein efficiency ratio PER and weight gain WG of Ž . juvenile channel catfish initially weighing 15.0"0.23 g 10–12 cm initial total length were Ž evaluated under three regimes of time-varying water temperature mean daily water temperature . Ž for Stoneville, MS, USA; mean q3; and, mean y38C and three of dissolved oxygen DO; 100, . 70 and 3...
Drought stress is one of the most important and most common environmental stress that is limited agricultural production. to evaluate the effect of different levels of deficit irrigation on some properties of three varieties of petunia, a factorial experiment in a completely randomized design with four replicationswas conducted in research greenhouse of Ferdowsi University of Mashhad. Examined ...
In the current work, we present a comprehensive modeling framework to predict the effective gas diffusivity, as a function of liquid water saturation, based on realistic 3-D microstructures of the uncompressed as well as compressed gas diffusion layer (GDL). The presented approach combines the generation of a virtual microscopic GDL and different physical modeling. We develop a reduced model in...
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