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the present paper investigates how far ideologies can be tease out in discourse by examining the employed schemata by two ideologically opposed news media, the bbc and press tv, to report syria crisis during a period of nine months in 2011. by assuming that news is not a valuefree construction of facts and drawing on micro structural approach of schema theory, for the first time in discours...
micrornas participate in the regulation of asthma, the goal of this study is to summarize recent researches on the roles of micrornas in the pathogenesis of asthma. a review of the english medical literatures was conducted by searching pubmed for studies concerning asthma and micrornas. the results of the present study indicate that micrornas play important roles in regulating asthma immune res...
A sensitive and selective extraction - spectrophotometric method for the determination of trace amounts of palladium is reported. The method is based on quantitative extraction of brownish tetrabutylammoium tetraiodopalladium (II) ion pair into a small valume of chloroform at pH 1.3-12.0, followed by spectrophotometric measurements. The Beer's law is obeyed over the range 0.02-1.09 <em...
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...
nowadays, air pollution is a global problem that has had significant growth by technology development, population growth andindustrial development. industrial development brought natural resources deterioration, more manufacturing products, and more environmental pollutants. if pollutant won’t be controlled, human-being and wildlife will face the critical risks. significant release and critical...
در این تحقیق طیف ارتعاشی کمپلکس وانادیل استیل استونات (vo(aa)2) در حالت جامد مورد بررسی قرار گرفته است. به منظور نسبت دادن دقیق نوارهای ارتعاشی به حرکات مولکول، طیف ارتعاشی کمپلکس cu(aa)2 نیز مورد استفاده قرار گرفت. ساختار هندسی این کمپلکس با استفاده از نرم افزار گوسین 9 و در سطح b3lyp با تابع پایه 6-311g* محاسبه شده است. سپس، ساختار محاسبه شده کمپلکس با ساختار به دست آمده از بلورنگاری با پرتو ...
In this work, the effects of carbon content and manganese sulfide addition on the microstructure and mechanical properties of copper steel parts have been studied. Steel powder mixture containing 2%Cu and different graphite contents with and without MnS additions were compacted, sintered and forged to almost full density. Forged samples, with near theoretical densities, were tested for tensile,...
this article explores the intricate interrelationships between discourses on identity and themultiple processes associated with increasing globalization in the modern age. globalization is notonly often exclusively associated with worldwide economic integration and the emergence of aborderless global market but also involves sweeping changes on the social, cultural and politicaldomains. further...
saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...
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