نتایج جستجو برای: gas percentage

تعداد نتایج: 377221  

Journal: :International journal of occupational safety and ergonomics : JOSE 2004
Anugrah Shaw Ruchika Abbi

Penetration of liquid pesticides through textile materials is a criterion for determining the performance of protective clothing used by pesticide handlers. The pipette method is frequently used to apply liquid pesticides onto textile materials to measure penetration. Typically, analytical techniques such as Gas Chromatography (GC) are used to measure percentage penetration. These techniques ar...

2004
J. Da̧bek

The formation of small ammonia clusters is investigated experimentally with a supersonic free molecular jet of NH3−X binary mixtures (X = Ar, He, N2), with a special attention paid to the effect of second species X on the cluster formation. The ion currents of protonated ammonia clusters (NH3)nH + (n = 2−6) were measured with a combined cluster source system and a double focussing sector field ...

Journal: :The Journal of infectious diseases 2000
D E Bessen J R Carapetis B Beall R Katz M Hibble B J Currie T Collingridge M W Izzo D A Scaramuzzino K S Sriprakash

Disease caused by group A streptococci (GAS) in tropical regions often takes the form of impetigo, whereas pharyngitis tends to predominate in temperate zones. GAS derived from asymptomatic throat infections and pyoderma lesions of rural Aboriginal Australians were evaluated for phylogenetic distant emm genes, which represent ecological markers for tissue site preference. On the basis of the pe...

1996
Detlef Lohse

Sound driven gas bubbles in water can emit light pulses (sonoluminescence). Experiments show a strong dependence on the type of gas dissolved in water. Air is found to be one of the most friendly gases towards this phenomenon. Recently, Lohse et al. (1996) have suggested a chemical mechanism to account for the strong dependence on the gas mixture: the dissociation of nitrogen at high temperatur...

Journal: :Neurocomputing 2014
Yicun Ouyang Hujun Yin

Nowadays, there exist various methods for modelling and forecasting foreign exchange (FX) rates including economical models, statistical methods and learning neural networks. Dealing with the problems of nonstationarity and nonlinearity has been a challenge. In this paper, we propose a combined neural model for effectively tackling the problems. The model is termed as neural gas mixture of auto...

2016
Wenlong Zhang

In order to find out the advantages and disadvantages of various development methods of coal bed gas, the experimental block provided by the field is studied, the component calculation model is established by CMG numerical simulation software on the basis of fine geologic modeling. Four development schemes are designed which are depleted development, development of hydraulic fracturing, develop...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی شیمی 1391

there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...

: Unwanted water production from oil and gas reservoirs is a serious problem for producers. Preformed particle gel (PPG) treatment is a benefit approach to control excess water production. Swelling percentage of PPG samples in saline water is a key factor affecting the efficiency of the water conformance process. In this study, an efficient series of PPGs were synthesized and their swelling beh...

Optically active bionanocomposite membranes composed of polyester(PE) and cellulose /silica bionanocomposite (BNCs) are a novel method to enhance gas separation performance. Commercially available silica nanoparticles were modified with biodegradable nanocellulose through ultrasonic irradiation technique. Transmission electron microscopy (TEM) analyses showed that the cellulose/silica composite...

Journal: :international journal of environmental research 0
m.a. abdoli graduate faculty of environment, tehran university tehran, iran f. mohamadi graduate faculty of environment, tehran university tehran, iran b. ghobadian dept. of mechanics engineering of agricultural machinery, tarbiat modares university, iran e. fayyazi dept. of mechanics engineering of agricultural machinery, tarbiat modares university, iran

using low-cost feedstocks such as rendered animal fats in biodiesel production willreducebiodieselexpenditures. one of the low-cost feedstocksfor biodiesel production could be the fatextracted from poultry feathers producedin slaughterhouses abundantly. this paper describes a new andenvironmentally friendly process for developing biodiesel production technology from feather waste producedin pou...

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