نتایج جستجو برای: m beta
تعداد نتایج: 715726 فیلتر نتایج به سال:
BACKGROUND A high rate of resistance to 3rd generation cephalosporins among Enterobacteriaceae isolates from Egypt has been previously reported. This study aims to characterize the resistance mechanism (s) to extended spectrum cephalosporins among resistant clinical isolates at a medical institute in Cairo, Egypt. METHODS Nonconsecutive Klebsiella pneumoniae (Kp), Enterobacter cloacae (ENT) a...
بتالاکتامازهای وسیع الطیف ) extended spectrum beta lactamase ) گروه ctx-m، tem وshv در سراسر جهان به عنوان یک مکانیسم مهم مقاومت در مقابل سفالوسپورین در پاتوژن های گرم منفی شناخته شده و به سرعت در حال افزایش اند. هدف از این مطالعه تعیین ژن های ctx-m، tem و shv در سویه های انتروباکتر مولد esbls ایزوله شده از بیمارستان های شهرستان زابل به روش واکنش زنجیره ای پلیمراز (pcr) بود. در این مطالعه تحقبق...
We study the asymptotic behaviour of number solutions $$(m, n)\in \mathbb{N}^2$$ , to inequality $$| \alpha^n - \beta^m | \leq x$$ when x tends infinity. Here $$\alpha, \beta$$ are given multiplicatively independent complex numbers with $$|\alpha| > 1 {\rm and} |\beta|>1$$ .
Background: Resistance to beta-lactam antibiotics in clinical isolates frequently results from the production of β-lactamase enzymes. In recent years, the production of extended spectrum β-lactamases (ESBLs) and AmpC β-lactamase have greatly increased, especially in clinically isolated Escherichia coli. On the other hand, beta lactamase genes have several subfamilies ...
Biodiversity is one of the important aspects of natursal systems which supports ecosystem functions. Therefore, the preservation of biodiversity is necessary for human well-being. The curreny study aimed to investigate changes of alpha and beta diversity and its components along the elevation gradient of five classes and to evaluate the effects of physical and chemical characteristics of soil o...
Manipulating cell cultures by elicitors is one of the important strategies for induction of valuable metabolites in plant biotechnology. Therefore, in this study the effect of ultrasound and salinity on growth, primary and secondary metabolite production was studied in Dunaliella salina microalgae cell culture. Cell cultures were treated with sodium chloride salt at concentrations of 2 and 3 M ...
Complete sequencing of pJIE137 revealed a backbone closely related to p271A, encoding a novel RepA protein but with a similar organization and up to ∼70% nucleotide identity to IncN plasmids. A region in pJIE137 resembling the IncN CUP regulon is mostly missing from p271A, presumably due to recombination. The class 1 In/Tn and ISEcp1-bla(CTX-M-62) transposition unit in pJIE137 and a putative tr...
In this paper, by introducing an anisotropic tempered fractional $ p $-Laplacian operator (-\Delta)_{p, \lambda}^{\beta/2, m} $, based on the Laplacian \Delta_{m}^{\beta/2} and one \Delta_{m}^{\beta/2, \lambda} which are studied Deng et.al recently in [13], model involving logarithmic nonlinearity is considered. We first establish maximum principle boundary estimate, play a very crucial role la...
An $(n, k, d, \alpha, \beta, M)$-ERRC (exact-repair regenerating code) is a collection of $n$ nodes used to store file. For file total size $M$, each node stores $\alpha$ symbols, any $k$ recover the file, and $d$ repair other via sending out $\beta$ symbols. We establish multilinear algebra foundation assemble M)$-ERRCs for all meaningful d)$ tuples. Our ERRCs tie $\alpha/M$-versus-$\beta/M$ t...
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