writing as a productive skill requires practice in the basic sub-skills of vocabulary and grammar. in fact, grammar has been viewed as the core of programs in writing classes to help the students put the elements of sentence together and combine sentences of specific lengths to come up with an error-free work of art. conceptualizing l2 writing in this way introduces writing as a product and enc...

‏‎despite the different criticisms on contrastive analysis it has been proved that the results of it(when processed) can be useful in a tefl environment, specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims.the consonants,vowels,stress and intonation of the two languages are described by the same model...

deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...

vocabulary as a major component of language learning has been the object of numerous studies each of which has its own contribution to the field. finding the best way of learning the words deeply and extensively is the common objective of most of those studies. however, one effective way for achieving this goal is somehow neglected in the field. using a variety of activities such as games can r...

بیماری هموفیلی a یک بیماری مغلوب وابسته به کروموزوم جنسی است که با خونریزی غیرکنترل شونده مشخص می شود. ابتلا به این بیماری در اثر وجود انواع جهش در ژن عامل هشت انعقادی بروز می کند. حذف ، اضافه شدن ، مضاعف شدن و مهمترین آنها یعنی جهش معکوس ، که در حدود نیمی (45%) از بیماران مبتلا به نوع شدید هموفیل a را به خود اختصاص می دهد، را در بر می گیرد و موجبات بروز بیماری هموفیلی a با شدت و ضعف متفاوت را ...

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

résumé du mémoire notre modeste travail comprend trios chapitres: - la jalousie: dans le premier chapitre‚ nous voyons que le mond dans la jalousie est vu à travers les persiennes de la fenêtre de la sale à manger .la jalousie est aussi sans doute l’histoire d’ un mari jaloux. l’absence d’enthousiasme fut en effet la réaction première de la plus grande partie de la critique et du public aux...

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

اعتیاد یک فنوتیپ چند ژنی و چند عاملی است که در نتیجه ی اختلالات مولکولی که در مدار پاداش مغزی از جمله آمیگدال، پره فرونتال کورتکس و ... بوجود می آید اتفاق می افتد. در پاسخ به مورفین نقش عوامل رونویسی نظیر creb و fosb، گیرنده هایی نظیر انواع گیرنده های اپیوئیدی، ژن های دخیل در انتقال گیرنده ها و مسیرهای پیام رسانی نظیر پروتئین g نشان داده شده است. یکی از تنظیم کنندگان کلیدی بیان ژن ها mirnaها هس...

bserved by many teachers that most of the time, mumbling and searching for their intended words, students complain why they have forgotten the words they have learned in the previous semesters. they ask for some new ways that may help them to recall and apply the learned words more efficiently, since as they declare one of the most important skills in foreign language learning is having a g...