طی بررسی تاکسونومیک کنه های پارازیتنگونای خشکی زی انگل بندپایان استان گیلان در سال های 1391-1389، 25 گونه لاروی متعلق به 20 جنس، 14 زیرخانواده، شش خانواده و چهار بالاخانواده از نمونه های خاک و از روی میزبان ها جداسازی و شناسایی شد که در بین آنها 12 گونه جدید برای دنیا، یک خانواده، شش گونه و پنج جنس به عنوان گزارش جدید برای ایران و چهار گونه گزارش جدید برای استان گیلان می باشند که به ترتیب با عل...

abstract this research is about a longitudinal case study of english morpheme acquisition by a persian speaking child l2 learner of english (2 .9-3).the goal of this research has been discovery of the child ‘s ability in acquiring of english morphemes in a persian context while only one person (the child’ s father)has been talking to her.this child has also been exposed to english languag...

within the components of communicative competence, a special emphasis is put on the “rules of politeness,” specifically the politeness strategies (brown and levinson, 1978) that speakers deploy when performing the request speech act. this is because the degree of imposition that making a request places upon one’s interlocutor(s) has been seen to be influenced by several factors among which, as ...

nitric oxide (no) is a small molecule synthesized by most of mammalian cells with diverse biological activities including vasodilatation, host defense and wound healing. impaired wound healing is a common occurrence among diabetics and patients receiving glucocorticoid therapy. on the other hand the application of laser in biomedical area have been increased. thus, the current studies were desi...

in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...

1- in a search directed to the reaction of compound)23(the cycloaddition reaction of 1,3- diphenylisobenzofurane)14(with p-benzoquinone)19(,followed by addition of cyclopentadiene was carried out.the specific spacial stracture of its ir,nmr,mass spectra. 2- in another attempt the kinetic stability and behavior of compounds)20(and)23(was studied.the main subject of this study was the highly reve...

آلاینده هایی از قبیل فلزات سنگین اثرات نامطلوبی بر آبزیان و در نهایت انسان به عنوان مصرف کننده نهایی دارند. کادمیم یکی از فلزات سمی موجود در پساب صنایع مختلف می باشد. لذا بررسی اثرات این آلاینده بر آبزیان ضروری به نظر می رسد. در این تحقیق سمیت حاد فلز کادمیم روی ماهی شانک زرد باله (acanthopagrus latus) در شرایط آزمایشگاهی مورد بررسی قرار گرفت. آزمایش ها به روش استاندارد طی 96 ساعت انجام شد. آزم...

a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...