نتایج جستجو برای: selective structure function

تعداد نتایج: 2700917  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده ادبیات و علوم انسانی 1392

in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...

Journal: :دراسات فی اللغه العربیه و آدابها 0
وحید حیدری مربی، گروه مرمت بنا،دانشکده هنر، دانشگاه سمنان، (نویسنده مسئول) هومان مقدادیان کارشناس ارشد، مرمت و احیاء بناها و بافت های تاریخی صادق پرتانی دانشجوی دکترا، مهندسی آب،دانشگاه تهران هادی جهان آبادیان کارشناس ارشد، مرمت و احیاء بناها و بافت های تاریخی بابک امین پور کارشناس ارشد، ژئوفیزیک

doruntash ancient city )tchoghazanbil( was built about13 th century b.c and middle period of elam civilization. as a complex ,doruntash was protected by three concentrated walls which are named: inner wall, middle wall and outer wall .big ziggurat ,mausoleums and palaces are some of the must monuments of the ancient city .tchoghazanbil is also famous for its water technologies and water element...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

selective desulfurization of thiocarbonyls to carbonyls thioacetalization of aldehydes and ketones a useful reagent system for the dethioacetalization reactions

Journal: :organic chemistry research 2016
sogol motallebi nosrat o mahmoodi fateme ghanbari pirbati abbas azimi

in this researchsaccharomyces cerevisiae (baker’s yeast) was used as a cheap, readily accessible, selective, efficient, and green bio-catalyst in a chemo selective reduction of carbonyl group to hydroxyl group. in this green procedure three substrates e.g. (3-(3-nitrophenyl)aziridin-2-yl)-1-phenyl-methanone, pyruvate ester, and 2-acetyl-γ-butyrolactone were reduced to their corresponding reduce...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم ریاضی 1392

ما قضیه هربراند را در چارچوب منطق پیوسته ثابت می کنیم. صرف نظر از جزئیات، قضیه هربراند منطق مرتبه اول را به منطق گزاره ای فرو می کاهد. ما روی یک حالت خاص که معمولاً با ابزار ساده مدل تئوریک ثابت می شود، تمرکز می کنیم. در حالت مرتبه اول، قضیه هربراند کاربردهای مهمی در اندازه های موتیویک دارد که در آن یک مشخص سازی از تابع های تعریف پذیر مورد نیاز است. در این پایان نامه، یک حالت منطق پیوسته از قضی...

Journal: :iranian journal of pharmaceutical research 0
shuqing liu dalian medical university chunmei guo dalian medical university yimeng guo dalian medical university hongshan yu dalian polytechnic university ming-zhong sun dalian medical university frederick greenaway clark university

dietary flavonoids show beneficial effects in the prevention of chronic diseases. however, flavonoid bioavailability is poor, probably due to their interaction with serum albumins. in the current work, the binding interactions of eight related flavonoids, sharing a similar core structure, with bovine serum albumin (bsa) were investigated by fluorescence spectroscopy. the binding affinities of t...

Journal: :journal of structural engineering and geo-techniques 2012
a esfandiari

in this paper, a structural damage identification method (sdim) is developed for plate-like structures. this method is derived using dynamic equation of undamaged/damaged plate, in which local change in flexural rigidity is characterized utilizing a damage distribution function. the sdim requires to modal data in the intact state and frequency response of damage state where most of vibration ba...

Journal: :journal of rangeland science 2015
mahsa ghobadi donat agosti mohammad mahdavi mohammad hassan jouri

harvester ants are known as one of the most renowned bio-disturbances in the arid and semi-arid ecosystems that affecte vegetation by collecting seeds and harvesting plants. it seems that physiognomy of plant association in steppe shrub land of roodshoor, saveh, iran has been highly changed by harvester ants’ activities that caused to conduct this research. the study was carried out on active a...

A Fallah H Latifi, O Karami S.H Shataei

During recent years, oak decline has been widely spread across Brant’s oak (Quercus Brantii Lindl.) stands in the Zagros Mountains, Western Iran, which caused large-area forest dieback in several sites. Mapping the intensity and spatial distribution of forest dieback is essential for developing management and control strategies. This study evaluated a range of geostatistical and interpolation m...

Journal: :basic and clinical neuroscience 0
behrooz khakpour-taleghani cellular & molecular research center and department of physiology, school of ‎medicine, guilan university of medical sciences, rasht, iran ‎ zahra reisi neuroscience research center, shahid beheshti university of medical sciences, ‎p.o.box 19615-1178, tehran, iran abbas haghparast neuroscience research center, shahid beheshti university of medical sciences, ‎p.o.box 19615-1178, tehran, iran

introduction: the hippocampus (hip), the primary brain structure related to learning and memory, receives sparse but comprehensive dopamine innervations and contains dopamine d1/d2-like receptors. it is demonstrated that dopamine receptors in dentate gyrus (dg) region of hip have a remarkable function in spatial reward processing. much less is known about the involvement of hip and its d1/d2 do...

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