one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

this research has been taken among the students of high school in karaj city during the years 1391 and 1392. this is a survey research and data gathering is through questionnaires. studying the “an analysis of students’ tendency toward non-native reference groups in karaj”. the questionnaire was distributed among 260 of these students who were chosen through multi step cluster sampling. conside...

مقدمه: مطالعات زیادی نشان می دهند تجویز حاد و مزمن دگزامتازون دارای اثرات پر دردی و ضد التهابی می باشد و استرس نیز اثرات متفاوتی چون بی دردی،پردردی و ضد التهابی را نشان می دهد اما این اثرات بر روی nociceptionدرغیاب فیبر های cکار نشده است. در مطالعه حاضر نقش فیبرهای c در اثرات بی دردی(analgesic )، پردردی(hyperalgesic )، التهابی(proinflammatory ) و ضدالتهابی(anti-inflammatory ) دگزامتازون و استرس...