نتایج جستجو برای: two reference points were considered as major reference points icluding
تعداد نتایج: 8255464 فیلتر نتایج به سال:
The Pechmann condensation has been used as a simple and efficient method for the preparation of coumarin derivatives, which phenols and ethyl acetoacetate were reacted in the presence of AlCl3 supported on nano silica as an efficient catalyst at 110 oC under solvent free condition to form products with good to excellent yield (55 -90%), which are identified by spectroscopi...
like any other learning activity, translation is a problem solving activity which involves executing parallel cognitive processes. the ability to think about these higher processes, plan, organize, monitor and evaluate the most influential executive cognitive processes is what flavell (1975) called “metacognition” which encompasses raising awareness of mental processes as well as using effectiv...
Abstract In this paper, we study overconfidence and goal-setting in academic performance, with without monetary incentives. Students enrolled a microeconomics course were offered the possibility of setting their own target grade before taking part final exam. They also asked to guess immediately after they had taken exam (“post-diction”). general, students overestimated both at post-diction sta...
In quantitative real-time PCR, the mRNA level can be quantified in relative terms based on the expression ratio of mRNAs of the target gene and an internal reference gene. Since, an internal standard should be expressed at a constant level among different tissues of an organism at all stages of development, and should be unaffected by the experimental treatment, the stability of different refer...
this study investigated the effect of prior knowledge on the listening comprehension performance of fl learners. twenty students, male and female, drawn from the two intact groups of the senior and junior english language and literature majors were chosen as the participants of this study . the two groups were then randomly assigned into the experimental and control group. the experimental gr...
new advances in geomatics and communications technologies are enabling the development of automated auscultation system for structure monitoring. in particular, differential gps (dgps) technique allows real-time monitoring of structures with millimetre accuracy after an appropriate mathematical treatment. the results of real-time dgps monitoring of a pilot dam over 15 months are presented and c...
Abstract The problem of common mode voltage in inverters can be considered as a major issue which leads to motor bearing failures. To eliminate these voltages, proposing some methods seems to be necessary. This paper has a comparative study on estimating modulation methods of eliminating common mode voltage. The main idea of these methods is based on generation of reference vector with nearest ...
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