نتایج جستجو برای: tio2zeolite x
تعداد نتایج: 623167 فیلتر نتایج به سال:
let $r$ be a noncommutative prime ring of characteristic different from $2$, $u$ the utumi quotient ring of $r$, $c$ $(=z(u))$ the extended centroid of $r$. let $0neq ain r$ and $f(x_1,ldots,x_n)$ a multilinear polynomial over $c$ which is noncentral valued on $r$. suppose that $g$ and $h$ are two nonzero generalized derivations of $r$ such that $a(h(f(x))f(x)-f(x)g(f(x)))in ...
جنس xylaria جنس تیپ تیره xylariaceae است که تاکنون بیش از 560 گونه آن از نقاط مختلف جهان گزارش شده است. بر اساس مطالعات ریخت شناسی و فیلوژنتیکی نمونه های جمع آوری شده از استان های گیلان، مازندران و گلستان، تعداد 11 گونه شامل xylaria arbuscula، x. cubensis، x. filiformis،x. hypoxylon، x. longissima، x. longipes، x. multiplex، x. pannosa، ،x. polymorpha، x. cf. striata و x. xylarioides شناسایی شد...
In this article, we have characterized ideals in $C(X)$ in which every ideal is also an ideal (a $z$-ideal) of $C(X)$. Motivated by this characterization, we observe that $C_infty(X)$ is a regular ring if and only if every open locally compact $sigma$-compact subset of $X$ is finite. Concerning prime ideals, it is shown that the sum of every two prime (semiprime) ideals of e...
A role of adenosine in pathogenesis of syndrome X has recently been postulated. Previous studies suggest that aminophylline (An adenosine receptor blocker) improves exercise tolerance in this disorder. Present study was performed to examine the efficacy of Theophylline in syndrome X and to determine the incidence of cardiovascular risk factors and clinical, ECG and angiographic findings in thes...
In this paper we introduce a special form of symmetric matrices that is called central symmetric $X$-form matrix and study some properties, the inverse eigenvalue problem and inverse singular value problem for these matrices.
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