نتایج جستجو برای: and zakariya al
تعداد نتایج: 16931273 فیلتر نتایج به سال:
An experimental study of the high velocity impact on 2/1 GLARE panels has been carried out. Four GLARE 3 panels with (Al/0/90/Al), (Al/02/902/Al), (Al/04/904/Al) and (Al/08/908/Al) configurations were fabricated. All panels had same aluminum thickness. Ballistic tests were conducted using flat ended steel projectiles. The failure modes and energy absorption mechanisms were characterized by obse...
Rice (Oryza sativa L) is an important source of food, as the population world increasing additional supply rice requisite to feed population. Moringa leaf extract, salicylic acid and zinc sulphate are excellent growth regulators used worldwide. A field experiment was conducted on at Bahauddin Zakariya University, Multan, Pakistan. Fine (super basmati) sown by two methods (S1= transplanting meth...
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in recent years the aluminum matrix composites are gaining wide spread applications in automotive, aerospace, defense, sport and other industries. the reason for this is their exciting properties like high specific strength, stiffness, hardness, wear resistance, dimensional stability and designer flexibility. the present work reports on mechanical properties and microstructure analysis of al-si...
4 Per Alström, Keith N. Barnes, Urban Olsson, F. Keith Barker, Paulette Bloomer, 5 Aleem Ahmed Khan, Masood Ahmed Qureshi, Alban Guillaumet, Pierre-André Crochet, 6 Peter G. Ryan 7 8 a Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese 9 Academy of Sciences, Chaoyang District, Beijing, 100101, P. R. China 10 b Swedish Species Information Centre, Swedish Univer...
هدف از این تحقیق ساخت کامپوزیت های al/al?o?/sicبه روش متالورژی پودر می باشد. ابتدا زمان مناسب برای آسیاکاری و دمای مناسب برای تف جوشی در نمونه های al/20%sic تعیین شد. زمان آسیاکاری و دمای تف جوشی بهینه که به ترتیب 8 ساعت و ?c600 تعیین شد، جهت ساخت کامپوزیت های تقویت شده با ذرات sicو al?o? به کار گرفته شد. پودرهای مورد نظر ابتدا با درصد های حجمی al/20%sic، al/20%al?o?، al/5%al?o?/15%sic، al/10%a...
In this paper, we study Ghiyath al-Din Jamshid al-Kashi's (1380-1429 A.D.) main mathematical achievements. We discuss his al-Risala al-muhitiyya ("The Treatise on the Circumference"), Risala al-watar wa'l-jaib ("The Treatise on the Chord and Sine"), and Miftah al-hisab ("The Key of Arithmetic"). In particular, we look at al-Kashi's fundamental theorem, his calcula...
abstractmuhammad asif mohseni, a shia religious authority and an afghan political activist, has recently published the second printing of his al-mu’jam al-ahadith al-mu’tabarah in 8 volumes. a new arrangement has been adopted regarding the jurisprudential and non-jurisprudential chapters of the book, which indicates the author’s stance toward the status of reason and science as well as the posi...
The evaluation of texture as a function of recrystallization has been characterized for directly cold rolled Al-6Mg, Al-6Mg-0.4Sc and Al-6Mg-0.4Sc-0.2Zr alloys. Samples were annealed isothermally at 400 °C for 1 to 240 minutes to allow recrystallization. Recrystallization kinetics of the alloys is analyzed from the micro-hardness variation. Isothermally annealed samples of aluminum alloys were ...
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