نتایج جستجو برای: chemical gas

تعداد نتایج: 602938  

Journal: :Monthly Notices of the Royal Astronomical Society 1951

Journal: :Astronomy and Astrophysics 2023

The chemical composition of gas in galaxies can be measured great detail using absorption spectroscopy. By studying this way, it is possible to investigate small and faint galaxies, which are the most numerous universe. In particular, distribution absorbing systems gives us insight into cycles around galaxies. work we study enrichment within 64 damped Lyman- α (DLAs) for redshifts range 1.7 &lt...

2012
Marta Regina Cezar-Vaz Laurelize Pereira Rocha Clarice Alves Bonow Mara Regina Santos da Silva Joana Cezar Vaz Letícia Silveira Cardoso

The present study aimed to identify the perceptions of gas station workers about physical, chemical, biological and physiological risk factors to which they are exposed in their work environment; identify types of occupational accidents involving gas station workers and; report the development of a socioenvironmental intervention as a tool for risk communication to gas station workers. A quanti...

Journal: :medical journal of islamic republic of iran 0
hamid pour-jafari from the dept. of genetics, hamadan university of medical sciences, hamadan, islamic republic of iran.

in the present work we studied the incidence of fetal deaths among conceptions whose fathers or both parents were survivors of chemical warfare attacks by iraq. we showed that there was significant correlation between frequency of fetal deaths among conceptions which eventuated after exposure of the parents to gas bombs compared to the frequency of fetal deaths among the control group. this wor...

Journal: :gas processing 0
maryam karamoddin school of chemical, gas and petroleum engineering, semnan university, semnan, iran farshad varaminian school of chemical, gas and petroleum engineering, semnan university, semnan, iran maryam daraee school of chemical, gas and petroleum engineering, semnan university, semnan, iran

â  abstract: in this work, the kinetics of ethane hydrate formation has been studied experimentally and a kinetic model based on chemical affinity has been described for predicting the hydrate growth process in the stirred batch reactor at a constant volume. the experiments were done with both pure water and aqueous solution of sodium dodecyl sulfate (sds). the effect of sds on formation kineti...

Journal: :Journal of chromatography. A 1999
W Liu H K Lee

Chemical modification of target analytes is widely used in modern analytical methods. This review focuses on the application of chemical modification techniques is the simultaneous analysis of metallic species by capillary electrophoresis, liquid chromatography and gas chromatography. Emphasis is placed on the procedures relating to analyses carried out by capillary electrophoresis. The develop...

2008
F. Karsch K. Redlich A. Tawfik

We compare recent lattice studies of QCD thermodynamics at non-zero quark chemical potential with the thermodynamics of a hadron resonance gas. We argue that for T ≤ Tc the equation of state derived from Monte–Carlo simulations of two flavour QCD at non-zero chemical potential can be well described by a hadron resonance gas when using the same set of approximations as used in current lattice ca...

1999
Peter Berczik

A new Chemo–Dynamical Smoothed Particle Hydrodynamic (CD-SPH) code is presented. The disk galaxy is described as a multi–fragmented gas and star system, embedded in a cold dark matter halo with a rigid potential field. The star formation (SF) process, SNII, SNIa and PN events, and the chemical enrichment of gas, have all been considered within the framework of the standard SPH model, which we u...

Journal: :journal of agricultural science and technology 2011
a. kamalak i. guven m. kaplan m. boga a. atalay

the nutritive values of honey locust pods obtained from different growing sites were evaluated by chemical composition and in vitro gas production techniques. growing site was found to have a significant (p< 0.001) effect on the chemical composition. the cp contents of honey locust pods ranged from 67.2 to 119.9 g kg-1 dm. water soluble carbohydrate (wsc) ranged from 122.3 to 152.2 g kg-1 dm. n...

Journal: :nanomedicine journal 0
f. shojaie department of photonic, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iranسازمان اصلی تایید شده: دانشگاه تحصیلات تکمیلی صنعتی کرمان (graduate university of advanced technology) m. dehghan department of photonic, institute of science and high technology and environmental sciences, graduate university of advanced technology, kerman, iranسازمان اصلی تایید شده: دانشگاه تحصیلات تکمیلی صنعتی کرمان (graduate university of advanced technology)

objective(s): first principles calculations were performed to study four multiple sclerosis drugs namely, ampyra, fingolimod, mitoxantrone and eliprodil in gas and liquid phases using density functional theory (dft). computational chemistry simulations were carried out to compare calculated quantum chemical parameters for ampyra, fingolimod, mitoxantrone and eliprodil. materials and methods: al...

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