Let $$I=(a,b)\times (c,d)\subset {\mathbb R}_{+}^2$$ be an index set and let $$\{G_{\alpha }(x) \}_{\alpha \in I}$$ a collection of Gaussian functions, i.e. $$G_{\alpha = \exp (-\alpha _1 x_1^2 - \alpha _2 x_2^2)$$ , where $$\alpha (\alpha _1, _2) I, \, x (x_1, x_2) R}^2$$ . We present complete description the uniformly discrete sets $$\Lambda \subset such that every bandlimited signal f admits...

in this paper, we study an equivalence relation on the set of fuzzysubgroups of an arbitrary group g and give four equivalent conditions each ofwhich characterizes this relation. we demonstrate that with this equivalencerelation each equivalence class constitutes a lattice under the ordering of fuzzy setinclusion. moreover, we study the behavior of these equivalence classes under theaction of a...

many species of tea (camellia sinensis) and cowslip (echium amoenum) are used in iranian traditional medicine. the aim of this study was to conduct the survey on the ability of iranian black tea and cowslip extracts on secretion of tumor necrosis factor-alpha (tnf-alpha) by non-infected and infected mouse macrophages. a macrophage infection model with legionella pneumophila and enzyme linked im...

conclusions based on this similarity and our bioinformatics evaluations, this mentioned alpha-amylase gene can be expressed in s. cerevisiae as extracellular enzyme. results the presence of alpha-amylase gene in recombinant bacteria was certificated by colony-pcr method. after extraction of recombinant vector from e. coli, the competent s. cerevisiae cells were transformed using polyethylene gl...