iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...

‏‎the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis,a one-way anova experimental design was carried out. 24 sednior students of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inter...

abstract: research purpose: the purpose of this research is to identify academic databases assessment factors and criteria at law and political science majors. the necessity of this research is to distinguish academic databases assessment factors and criteria and to identify the most important ones and rank them in order to select an appropriate database according to students’ and faculty memb...

this study investigated the effects of three kinds of gloss conditions, that is traditional non-call marginal gloss, audio gloss, and extended audio gloss, on reading comprehension and vocabulary gain of iranian upper- intermediate efl learners. to this end, three experimental and one control groups, each comprising 15 participants, took part in the current study. in order to ensure that the pa...

during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...

chapter one is devotod to collect some notion and background informations, which are needed in the next chapters. it also contains some important statements which will be proved in a more general context later in this thesis. in chapter two, we show that if the marginal factor-group is of order np1...pk,n>1, then we obtain a bound for the order of the verbal subgroup. also a bound for the bear-...

abstract part one: the electrode oxidation potentials of a series of eighteen n-hydroxy compounds in aqueous solution were calculated based on a proper thermodynamic cycle. the dft method at the level of b3lyp-6-31g(d,p) was used to calculate the gas-phase free energy differences ,and the polarizable continuum model (pcm) was applied to describe the solvent and its interaction with n-hydroxy ...

پسیل معمولی پسته، Agonoscena pistaciae Burckhardt & Lauterer، یک آفت اقتصادی در بین پسیل‌های موجود در باغ پسته می‌باشد. گسترش و طغیان این آفت، تشخیص و به‌کارگیری روش‌های کنترل غیرشیمیایی، به‌ویژه کنترل بیولوژیک را ایجاب می‌کند. کفشدوزک Hippodamia variegata (Goeze) یکی از شکارگر‌های توانا در باغ‌های پسته است. این شکارگر همه‌چیز‌خوار بوده و از شته‌ها و پسیل‌ها تغذیه می‌کند. در این پژوهش، میانگین ...

پسیل معمولی پسته (Burckhardt & Lauterer Agonoscena pistaciae) یکی از مهمترین آفات درختان پسته اهلی و وحشی در کشور می‌باشد. ویژگیهای زیستی و رفتاری کفشدوزک Oenopia conglobata contaminata Menetries که گونه غالب و مهمترین کفشدوزک شکارگر پسیل معمولی پسته در رویشگاههای بنه استان کرمان می‌باشد، در شرایط کنترل شده آزمایشگاهی بررسی گردید. براساس نتایج حاصل از این بررسی، نرخ ذاتی افزایش جمعیت (rm) و نرخ...

پسیل معمولی پسته، Agonoscena pistaciae Burckhardt & Lauterer (Hemiptera: Aphalaridae)، یکی از مهم­ترین آفات درختان پسته در ایران و منطقۀ خاورمیانه است. دانش کمی دربارۀ تنوع ریخت­شناختی جمعیت­های جغرافیایی پسیل معمولی پسته در ایران و به‌ویژه در استان کرمان به عنوان مهم­ترین تولیدکنندۀ پسته کشور وجود دارد. بنابراین برای افزایش آگاهی از تنوع ریخت­شناختی جمعیت­های این آفت، جمعیت­های مختلف آن از برخ...