نتایج جستجو برای: physical method
تعداد نتایج: 2202734 فیلتر نتایج به سال:
in this thesis, using concepts of wavelets theory some methods of the solving optimal control problems (ocps). governed by time-delay systems is investigated. this thesis contains two parts. first, the method of obtaining of the ocps in time delay systems by linear legendre multiwavelets is presented. the main advantage of the meth...
run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...
جهت بررسی تاثیر فعالیتهای گروهی کاردرمانی ( گروههای ورزشی physical exercise group ، و گروههای بحث discussion group ) بر کاهش میزان افسردگی معتادین مرکز بازپروری تهران، معتادینی که در ده روز متوالی در مرکز بازپروری فوق پذیرش شدند. با آزمون سنجش افسردگی بک beck depression scale مورد ارزیابی قرار گرفتند و تعداد 60 نفر از آنها که در آزمون فوق نمره بالاتر از 15 را کسب نمودند براساس ویژگی...
While certainly taking full responsibility for the contents of this thesis, it would yet be absurd of me to take full credit, for many people have contributed, however indirectly, to its completion. I'd like to at least take the trouble to thank a few of them. I'd first like to note my obvious debt to those scientists of various disciplines whose ideas have influenced mine. In this connection t...
A method is described for determining small amounts of water and other volatile substances present as impurities in various organ ic and inorganic compounds. The impurity is separated by fusing the substance in a cell attached to a collecting system and allowin g it to freeze slowly while the vapors are collected by pumping them into a t rap of known volume, cooled by liquid air. When the trap ...
The basic arguments underlying the symplectic projector method are presented. By this method, local free coordinates on the constraint surface can be obtained for a broader class of constrained systems. Some interesting examples are analyzed.
چکیده: در این تحقیق، برخی خواص فیزیکی و مکانیکی لوبیا قرمز به-صورت تابعی از محتوی رطوبت بررسی شد. نتایج نشان داد که رطوبت بر خواص فیزیکی لوبیا قرمز شامل طول، عرض، ضخامت، قطر متوسط هندسی، قطر متوسط حسابی، سطح تصویر شده، حجم، چگالی توده، تخلخل، وزن هزار دانه و زاویه ی استقرار استاتیکی در سطح احتمال 1 درصد اثر معنی داری دارد. به طوری که با افزایش رطوبت از 54/7 به 12 درصد بر پایه خشک طول، عرض، ضخام...
in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...
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