cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

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...

مقدمه: گیاه ریحان به عنوان گیاهی دارویی در طب سنتی برای درمان انواع مختلفی از بیماری ها کاربرد دارد، علاوه بر آن این گیاه به عنوان یک ماده غذایی و چاشنی غذا استفاده می شود. بررسی ها نشان می دهند که همزیستی قارچ های میکوریزی با ریشه گیاهان، سبب بهبود و افزایش رشد و محصول دهی گیاه میزبان می شود. هدف: بررسی تغییرات رشد و برخی پارامترهای فیزیولوژیگ ریحان در اثر تلقیح با یک قارچ میکوریزی بومی glomus...

abstract this study examined the relationship between noticing pronunciation and the improvement pronunciation by administering a 50 item story, as proficiency- test in order to investigate the effectiveness of noticing pronunciation on the improvement of pronunciation. accordingly 60 qualified students were selected and assigned to the two groups of experimental and control randomly, each gr...

the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...