نتایج جستجو برای: dabiran al
تعداد نتایج: 443034 فیلتر نتایج به سال:
one of the debates concerning concepts of “medial motion” and “traversal motion” is the question of which of these two concepts of motion corresponds to motion in the corporeal world. in the present article we intend to employ the language of mathematics to present a model for each of these two concepts to study the above mentioned problem. as a result, medial motion represents a covering funct...
baha’ al-dawlah razi was one of the most important physicians in safafid dynasty in iran. he wrote his large medical book, kholasat al-tajarob at 1501 ad. he worked as physician in the courts of two dynasties, teimurid and safavid. he had interesting innovations and findings in surgery, immunology and also in treatment. as examples, we can note to his description of pertussis and also his oral ...
the degradation rate of mediterranean steppes, especially in north africa is 1% per year, and this considered as high a rate of degradation. this study conducted in 2014 in the south slope of the al-jabal al-akhdar, northeast libya to quantify the vegetation recovery rate and assess selected vegetation indices (vis) for mapping rangelands degradation status using remote sensing technology. thro...
tendency to najwa (religious whispering) and praying to god has been present in human soul from the time immemorial. in other words, the background of human’s god-seeking tendencies has been confirmed through historical and archeological excavations. attachment to the infinite source of being and coming to the divine threshold is a process that can be possible through prayers and that's th...
one of the controversial issues concerning the qur’ān in the contemporary era has been the claim of the existence of mythological stories in the qur’ān. primarily, muḥammad aḥmad khalaf allāh set forth this claim in his al-fann al-qaṣaṣī. one of khalaf allāh’s evidences for his claim is that on nine occasions the qur’ān has been accused of being mythical by the polytheists and the almighty god ...
Knowing the level of content Arabic textbooks at high school is important because it starting point in preparing teaching materials university level. Without knowing level, repetition can occur determining and cause delays increasing linguistic to a higher The purpose this study was analyze description general secondary based on Common European Terms Reference. In writing research, researcher u...
پودر های کامپوزیتی زمینه nial مواد مناسبی برای پوشش سطوح در دمای 700-1000 درجه ی سانتیگراد به عنوان سپر حرارتی می باشند. در این مطالعه تولید پودرهای کامپوزیتی زمینه nial تقویت شده از 0 تا 40 درصد وزنی، با فاز های تقویت کننده متفاوت به روش سنتز احتراقی بررسی شد و امکان-سنجی تولید نانو کامپوزیت زمینه nial تقویت شده با nbb2 استفاده از سیستم واکنشی ni-al-nb-b با استفاده از روش آلیاژسازی مکانیکی مور...
نانوذرات دی اکسید تیتانیوم به روش های سل-ژل و میکروامولسیون در آزمایشگاه سنتز شدند. نانوذرات توسط طیف نگاری پرتو ایکس (xrd)، میکروسکوپ الکترونی روبشی میدان گسیل (fesem) و طیف جذبی اشعه فرا بنفش-مرئی (uv-vis) مورد مشخصه یابی قرار گرفتند. پیک های حاصل از مشخصه یابی پراش اشعه ایکس تأیید کردند که نانوذرات به دست آمده به طور کامل در حالت فازی آناتاز قرار دارند. اندازه نانوذرات با استفاده از معادله...
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