حشرات fulgoromorphaشامل تعداد زیادی از آفات مخرب کشاورزی در سراسر جهان است که با تخمریزی در بافت های گیاهی و تغذیه از آوندهای آبکشی در گیاهان میزبان خود ایجاد خسارت می¬کنند. همچنین برخی از حشرات این گروه در انتقال عوامل بیمارگر گیاهی نقش مهمی ایفا کرده و میزان خسارات وارده را افزایش می¬دهند. منطقه¬ی حاصلخیر شهرستان جیرفت در کشاورزی جنوب شرق ایران اهمیت زیادی دارد و براین اساس، فون زنجرک¬های گیا...

this study was an attempt to investigate and compare the effect of lexical inferencing and concept mapping on developing vocabulary retention of iranian language learners. sixty homogeneous students from different intact classes who were being taught as intermediate learners in sokhan english institute participated in this study. they were in different classes. a teacher made test as a pre-test...

the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...

طی بررسی هائی که جهت جمع آوری و شناسائی فون کنه های باغات میوه در شهرستان نجف آباد در سال های 1391-1390 انجام شد مجموعا، 17 گونه متعلق به 14 جنس و 8 خانواده جمع آوری و شناسائی شد که 1 گونه برای اولین بار از ایران معرفی گردید که با (*) مشخص شد، و تعداد 2 گونه برای اولین بار در دنیا شناسائی و توصیف گردید که با علامت (**) مشخص شده-اند. لیست گونه های گزارش شده بر اساس طبقه بندی راسته و خانواده به ...

abstract the present study was an attempt to investigate the effect of critical thinking on writing ability of 60 iranian intermediate efl learners studying at chenar language institute in khuzestan, iran. to this end, the participants of the study were selected based on their performance in an pet test, a cornell critical thinking test form x and a pre-test of writing. the participants un...

this study sought to examine the effect of cooperative game on iranian students achievements in english alphabet learning. cooperative games are games, in which players or teams work together towards a common goal without defeating someone. the methodology used in this study was experimental. the population of the study was 60 female students from the grade one in secondary school in tabriz, ir...