نتایج جستجو برای: technology and r
تعداد نتایج: 16935951 فیلتر نتایج به سال:
dye removal from effluents of textile industries of iran was investigated through biodegradabilitymethod and membrane technology . basic, reactive,disperse and acidic dyes were selected, based onusage rate in iran. the zahen - welenze method (iso 9888) was applied to study the biodegradabilityof dyes. results showed the final cod and dye removal (%r) as (%61,% 57), (%73, %76), (%25, %14),and (%...
In recent decades, research has grown increasingly in Iran and consequently, the country has risen dramatically in world rankings based on the number of scientific documents. However, there are many evidences that show these researches were ineffective. Therefore, their efficacy should be evaluated which is the main purpose of this study. In this regard, using the descriptive-analytical method ...
background: hospitals employing telesurgery need to be evaluated to determine whether they satisfy the international standards. the main goal of this research was to assess the software, hardware, telecommunication equipments, privacy and security methods, and staffing requirements for supporting and executing telesurgery in hospitals affiliated to tehran universities of medical sciences, tehra...
section{introduction} the concept of {sl cartan geometry} appeared at the beginning of the twentieth century, when {e}lie cartan was working on the so-called {sl equivalence problem}, the aim of which is to determine whether two given geometric structures can be mapped bijectively onto each other by some diffeomorphism. this problem can be considered in many different contexts, such as ...
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