background and objectives : carbapenem resistant pseudomonas aeruginosa is a serious cause of nosocomial infections.the main purpose of the study is to determine the prevalence rate of imipenem resistant pseudomonas aeruginosa carrying metallo- beta- lactamase (mbl) genes. material and methods : 236 pseudomonas aeruginosa isolates were collected from teaching hospitals of ahvaz university of me...

for $a,bin m_{nm},$ we say that $a$ is left matrix majorized (resp. left matrix submajorized) by $b$ and write $aprec_{ell}b$ (resp. $aprec_{ell s}b$), if $a=rb$ for some $ntimes n$ row stochastic (resp. row substochastic) matrix $r.$ moreover, we define the relation $sim_{ell s} $ on $m_{nm}$ as follows: $asim_{ell s} b$ if $aprec_{ell s} bprec_{ell s} a.$ this paper characterizes all linear p...

With “hat” denoting the Banach envelope (of a quasi-Banach space) we prove that ̂ B p (Rn) = B s−n ( 1 p −1 ) ,1 1 (R ), ̂ F s,q p (Rn) = B s−n ( 1 p −1 ) ,1 1 (R ), if 0 < p < 1, 0 < q < 1, s ∈ R, while ̂ B p (Rn) = B s−n ( 1 p −1 ) ,q 1 (R ), ̂ F s,q p (Rn) = B s−n ( 1 p −1 ) ,1 1 (R ), if 0 < p < 1, 1 ≤ q < +∞, s ∈ R, and ̂ B p (Rn) = B p (R), ̂ F s,q p (Rn) = F s,1 p (R), if 1 ≤ p < +∞, 0 < q < 1...

The b l a c k b o a r d a r c h i t e c t u r e i s a p o w e r f u l e x p e r t systems a r c h i t e c t u r e . I t s main advantages a r e f l e x i b i l i t y o f c o n t r o l and i n t e g r a t i o n o f d i f f e r e n t k i n d s o f knowledge r e p r e s e n t a t i o n s and i n f e r e n c i n g t e c h n i q u e s . At our L a b o r a t o r i e s we b u i l t a b l a c k b o a r...

C o a g u l a t i o n a b n o r m a l i t y is f requent l y obse rved i n s c h i s t o s o m i a s i s p a t i e n t s bu t i ts p a t h o p h y s i o l o g y h a s no t been e s t a b l i s h e d . We m e a s u r e d , by i m m u n o d i f f u s i o n . the p r o t h r o m b i n a n t i g e n c o n c e n t r a t i o n i n 56 i n d i v i d u a l s ; of these 19 w i th d e m o n s t ra ted c o...

the recognition of the biologically and environmentally important ions is of great interest in the field of chemical sensors in recent years. the fluorescent sensors as a powerful optical analytical technique for the detection of low level of various analytes such as anions and metal cations have been progressively developed due to the simplicity, cost effective, and selectivity for monitoring ...

-This paper deals with a finite-difference solution of the torsion problem of nonhomogeneous and compound prismatic bars. General, governing equations for both problems are developed and the boundary conditions for an interface between parts composed of homogeneous but different materials are stated. The case of multiply connected regions is discussed and integral conditions, analogous to the c...

To be considered for publication, solutions should be received by September 1, 2011. 1866. Proposed by Sadi Abu-Saymeh and Mowaffaq Hajja, Mathematics Department, Yarmouk University, Irbid, Jordan. Let ABC be a triangle, and L and M points on AB and AC, respectively, such that AL = AM. Let P be the intersection of BM and CL. Prove that PB = PC if and only if AB = AC. 1867. Proposed by Ángel Pla...

Cultured cells cloned from the C1300 neuroblastoma have been shown by several laboratories to extend neurites (1-6) and to accumulate nervespecific enzymatic activities (7) when grown under conditions in which cell division is inhibited. Study of this system has been stimulated by the hope that it might serve as an in vitro model of nerve cell differentiation. Many of the neurite-inducing agent...

In order to study in a regularisation free manner the renormalisability of d=2 supersymmetric non-linear σ models, one has to use the algebraic BRS methods ; moreover, in the absence of an off-shell formulation, one has often to deal with open algebras. We then recall in a pedagogical and non technical manner the standard methods used to handle these questions and illustrate them on N=1 supersy...