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تعداد نتایج: 3719119 فیلتر نتایج به سال:
the effect of learning strategies on the speaking ability of iranian students in the context of language institutes abstract language learning strategies are of the most important factors that help language learners to learn a foreign language and how they can deal with the four language skills specifically speaking skill effectively. acknowledging the great impact of learning strategies...
رهی معیری از شعرا و ترانه‌سرایان معروف معاصر است که با مطالعۀ غزلهای سعدی، حافظ، مولوی و عراقی خود را از چشمۀ فیاض شعر پیشینیان سیراب کرد و یکی از غزل‌سرایان مشهور معاصر ایران شناخته شد. روانی، انسجام و خیال انگیزی سخن او آن گونه است که شعر او به سبک سخن سعدی نزدیک می‌شود؛ از این رو در این پژوهش کوشش شده است عناصر موسیقایی غزلیات این دو شاعر با توجه به موسیقی بیرونی، کناری، درونی و معنوی با ارا...
A number of gangliosides were isolated from cat and sheep erythrocytes for use in analyzing the specificity of a panel of human anti-heterophile monoclonal antibodies. The structures of these compounds were determined by a combination of different procedures, including sugar analysis, glycosidase treatment, periodate oxidation, TLC immunostaining, methylation analysis, and mass spectrometry. Th...
The fragmentation of underivatized and peracetylated maltooligosaccharides, ranging in length from four to seven glucose residues, has been investigated by 252Cf plasma desorption mass spectrometry (PDMS). Investigations are made of the effects on the mass spectra of (1) peracetylation, (2) sample preparation by electrospray deposition onto metallic substrates versus adsorption onto nitrocellul...
previous studies have aimed at testing a hypothesis but the present study is data-first research in which researcher tries to form a theory from data rather than the use of data to test a hypothesis. this study aims at exploring teachers perceptions of the strengths and weaknesses of the current syllabus for college preparatory course. eight experienced teachers were selected to collect data du...
one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...
in this thesis we will present three topics. we define approximate fixed points in fuzzy normed spaces. also we obtain some necessary and sufficient conditions on the existence of? -fixed points for ? > 0. at the continue some results about approximate fixed points for a class of non-expansive maps on g-metric spaces are obtained and we define approximate fixed points in partial metric spa...
استفاده از پیلهای سوختی رسوبی از روش های نوین تولید الکتریسیته پاک است و طیف متنوعی از مواد آلی موجود در رسوبات را تبدیل به جریان الکتریسیته می کنند. در این تحقیق از چهار منبع رسوبی مختلف دریا، حوضچۀ پرورش ماهی، چشمۀ محلی و رودخانۀ محمودآباد به عنوان مولد جریان الکتریسته استفاده شده است. از گرافیت به عنوان الکترود در محفظههای آند و کاتد پیلهای سوختی رسوبی استفاده شد. کم ترین میزان توان به دس...
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