in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

فصل اول پیرامون کلیات دو مساله علم خداوند و اختیار انسان. فصل دوم: دیدگاه قائلین ناسازگاری علم پیشین الهی با اراده انسان و بررسی آن. فصل سوم: دیدگاه قائلین سازگاری علم پیشین الهی بااراده انسان و بررسی آن. خاتمه: در نتیجه گیری بحث و اثر که بر این دیدگاهها مترتب است.

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

سیاست قاجاریه در اداره حکومت ایالات و ولایات مبتنى بر به کارگیرى شاهزادگان و امیران دربارى بوده است و پادشاهان قاجار براى ممانعت از افزایش قدرت خوانین و سران ایلات و قبایل، از واگذارى قدرت و حکمرانى مناطق مختلف به حاکمان غیر قاجارى امتناع مى‏ورزیدند. امّا در بعضى موارد به دلیل عدم توانایى شاهزادگان به ناچار حکمرانى بعضى از مناطق هم چون شمال خراسان (که از ترکیب اجتماعى و جمعیتى خاص برخوردار مى‏با...

chapter one is devotod to collect some notion and background informations, which are needed in the next chapters. it also contains some important statements which will be proved in a more general context later in this thesis. in chapter two, we show that if the marginal factor-group is of order np1...pk,n>1, then we obtain a bound for the order of the verbal subgroup. also a bound for the bear-...

in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...

abstract: the present study was undertaken to investigate whether 1) there is any significant correlation between iranian efl/eap learners’ l2 writing proficiency and their willingness to communicate, 2) there is any significant difference between efl and eap learners in terms of willingness to communicate, 3) there is any significant difference in wtc of iranian efl/eap learners with 1- nati...