نتایج جستجو برای: شکاف g a p
تعداد نتایج: 13742539 فیلتر نتایج به سال:
چکیده: یک عنصر f از حلقه ی تعویض پذیر و یکدار a را یک عنصر وان نیومن منظم گویند، اگر عنصر g از حلقه ی a موجود باشد به طوری که f^2 g=f. c(x) یک حلقه ی وان نیومن منظم است، اگر و تنها اگر، هر عنصر آن وان نیومن منظم باشد. c(x) یک حلقه وان نیومن منظم است، هرگاه x یک p- فضا باشد. اگر همه نقاط فضای x به جز حداکثر یکی از آن ها p - نقطه باشد، فضای x را یک p - فضای اساسی محض می نامند. در این رساله نشان م...
background: copper-64 (t1/2=12.7 h) is an important radionuclide used both in pet imaging and therapy. [64cu]-pyruvaldehyde-bis (n4-methylthiosemicarbazone) ([64cu]-ptsm) is one of the most famous copper radiopharmaceuticals with unique specifications (suitable half life, stability, etc.). the wide range of 64cu applications arouse great interest for its production. materials and methods: cu-64...
background and aims: epigallocatechin-3-gallate (egcg) is a polyphenolic compound from green tea, which its anticancer effects on many types of cancers have been confirmed, but the molecular mechanism by which egcg induces apoptosis remains unknown. the aim of the present study was to investigate anti-proliferative properties and apoptotic signaling pathway of egcg on pc3 human prostate cancer ...
chapters 1 and 2 establish the basic theory of amenability of topological groups and amenability of banach algebras. also we prove that. if g is a topological group, then r (wluc (g)) (resp. r (luc (g))) if and only if there exists a mean m on wluc (g) (resp. luc (g)) such that for every wluc (g) (resp. every luc (g)) and every element d of a dense subset d od g, m (r)m (f) holds. chapter 3 inv...
زمینه و هدف : دژنراسیون وابسته به سن ماکولا(amd) یک بیماری هتروژنی بالینی است که سبب نارسایی بینایی می¬شود. این بیماری به طور تقریبی افرادی در سنین بالای 60 سال را درگیر می کند. در کنار سن و مصرف سیگار، واریانت¬های ژنتیکی از لوکوس های ژنی متعدد با این بیماری ارتباط دارد. مطالعات پیوستگی وسیع ژنومی نشان داده¬اند که ناحیه¬ی ژنومی واقع بر بازوی بلند کروموزوم 10 (10q26) ممکن است نقش مهمی در استعداد...
background & objectives: good fasting practice is not only refraining from foods and drinks in a period of time, but should encompass several important factors including unexcessive eating habit during ifthor. understanding the effect of fasting accompanied by calorie restriction (cr) in oxidative stress indicators, malondialdehyde (mda) and 8-oxo-7,8-dihydro-2'deoxyguanosine (8-oxodg), th...
A family of harmonic superspaces associated with four-dimensional Minkowski spacetime is described. Applications are given to free mass-less supermultiplets, invariant integrals and super Yang-Mills. The generalisation to curved spacetimes is given with emphasis on confor-mal supergravities.
let g=(v,e) be a graph with vertex set v and edge set e.for two vertices u,v of g ,the closed interval i[u,v] ,consists of u,v and all vertices lying in some u-v geodesic in g.if s is a set of vertices of g then i[s]is the union of all sets i[u,v]for u,v ? s. if i[s]=v(g) , then s is a geodetic set for g.the geodetic number g(g) is the minimum cardinality of geodetic set.the maximum cardinalit...
section{introduction} the concept of {sl cartan geometry} appeared at the beginning of the twentieth century, when {e}lie cartan was working on the so-called {sl equivalence problem}, the aim of which is to determine whether two given geometric structures can be mapped bijectively onto each other by some diffeomorphism. this problem can be considered in many different contexts, such as ...
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