background: benzene, toluene, ethyl benzene and xylene compounds (btex) are very dangerous in terms of health and environmental and have high toxicity in aquatic environment. the purpose of this study was to investigate the performance analysis of petroleum hydrocarbons xylene using solar radiation uv/tio2 method in industrial synthetic waste . methods: an experimental-interventional study was ...

this review paper provides researcherwith a comprehensive information about the carbon nano tubes and the catalyst parameters that influences theproduction and morphology of the of carbon nano tubes.carbon nanotubes, referred to as cnts, are one of the most important materials used in electrical, mechanical, thermal, chemical and textile industries. since discovery of cnts in 1991, many scienti...

the present study aims to investigate language learners’ cognitive processes in on-line esp courses. three modes of inquiry are used: think-aloud protocol analysis, screen capture analysis, and correlation analysis. the theoretical foundations for the evaluation of the cognitive aspect of ferdowsi univeristy of mashhad e-learning system are drawn from cognitive load theory, cognitive apprentice...

eighteen kilometers long coastal stretch from the new mangalore port in the north totalapadi in the south has been studied in order to understand shoreline changes and erosion/ accretion patterns that have taken place due to the natural processes and anthropogenic activities. shoreline changes and quantification of beach erosion/accretion were made using the survey of india topomap, multidated ...

there are several researches that deal with the behavior of ses and their relationships with different economical factors. these range from papers dealing with this subject through econometrical procedures to statistical methods known as copula. this article considers the impact of oil and gold price on tehran stock exchange market (tse). oil and gold are two factors that are essential for the ...