نتایج جستجو برای: but a combinationof various factors is involved

تعداد نتایج: 14453082  

Drug addiction is a serious threat to the health of individuals. Not only does this affect the life of the individual, it also creates many disadvantages and deficits for the family and society. Substance-dependent individuals are considered socially vulnerable. Unfortunately, addiction recurrence has many effects on the individual, society, and family. An individual who returns toward the subs...

Journal: :international journal of pediatrics 0
n mahdavi shahri professor, histology and cytology, department of biology, faculty of science, stem cell biotechnology research group, institute of biotechnology, ferdowsi university of mashhad, mashhad, iran. m moghaddammatin associate professor, molecular biology, department of biology, faculty of science, cell and molecular biotechnology research group, institute of biotechnology, ferdowsi university of mashhad, mashhad,iran. m fereidoni associate professor, physiology, department of biology, faculty of science, ferdowsi university of mashhad, mashhad, iran. m behnamrassouli professor, physiology, department of biology, faculty of science, ferdowsi university of mashhad, mashhad, iran. a moghimi professor, physiology, department of biology, faculty of science, ferdowsi university of mashhad, mashhad, iran. ar bahrami professor, molecular biology, department of biology, faculty of science, cell and molecular biotechnology research group, institute of biotechnology, ferdowsi university of mashhad, mashhad, iran.

tissue engineering is based on three main factors including scaffolds, cells and growth factors. natural scaffolds derived from decellularized tissues and organs have been successfully used in tissue engineering. decellularization studies have shown that natural scaffolds which maintaine their main structure and properties could be a suitable tool for studying cellular behaviors and preparation...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1390

this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...

پایان نامه :0 1374

the following question poped up: is there any relationship between iranian high school efl learners reading comprehension and listening comprehension? then the following null hypothesis (ho) was developed to the test the above, mentioned question. "there is no relationship between high school efl learners reading comprehension and listening comprehension. for nearly 16 weeks, the experimental g...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده زبانهای خارجی 1392

abstract since heubners (1985) pioneering study, there have been many studies on (mis) use/ non-use of articles by l2 learners from article-less and article languages. the present study investigated how persian l2 learners of english produce and interpret english definite descriptions and demonstrative descriptions. it was assumed that definite and demonstrative descriptions share the same cen...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1357

in his last years of life americans had almost forgotton steinbeck, and those who had not, occasionally criticized him for supporting and praising the u. s. military intervention in the vietnam war. althought ateinbeck incorporates different themes into his works, each one bears many signs of his concern and sympathy for america and the american common people in particular. steinbecks to a god ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه دریانوردی و علوم دریایی چابهار - دانشکده مدیریت 1393

within communicative, interactive, and learner-centered framework of language teaching and learning, students need to learn four skills of listening, speaking, reading, and writing for their educational success. but of all the language skills, reading enjoys a paramount significance in so many second or foreign language academic contexts. in spite of its importance, language learners still have...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1375

this thesis basically deals with the well-known notion of the bear-invariant of groups, which is the generalization of the schur multiplier of groups. in chapter two, section 2.1, we present an explicit formula for the bear-invariant of a direct product of cyclic groups with respect to nc, c>1. also in section 2.2, we caculate the baer-invatiant of a nilpotent product of cyclic groups wuth resp...

Journal: :research in molecular medicine 0
zahra tahmasebi fard

background: breast cancer is the malignancy in humans and other mammals. several risk factors are involved in their appearance such as higher hormone levels and obesity. identification of a mouse mammary tumor virus supports a viral etiology for breast tumors in animals. viruses have been implicated in the development of various cancers, but viral induction for formation breast cancer is contro...

Journal: :IOSR Journal of Biotechnology and Biochemistry 2017

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