Motivated by recent observations of high-velocity, highly ionized winds in several QSOs, models of purely continuum-driven winds launched from ∼ 200 GMBH/c2 are presented. Launching conditions are investigated, as well as the observational signatures for a variety of initial conditions and illuminating continua. While we verify that continuum-driven, highly-ionized outflows reach the observed v...

In this paper we propose a substructuring preconditioner for solving three-dimensional elliptic equations with strongly discontinuous coefficients. The new preconditioner can be viewed as a variant of the classical substructuring preconditioner introduced in Bramble, Pasiack and Schatz (1989), with simpler coarse solvers. We will show that, although the preconditioned system may not have a good...

The aim of this research work is to define a new class hyperstructure as generalization semigroups, semihypergroups and Γ-semihypergroups that we call (Δ,G)-sets. Also, fundamental relation on (Δ,G)-sets prove some results in respect. Then, introduce the notions quotient by using congruence relations. Finally, concept complete parts Noetherian(Artinian)

Let G be a permutation group acting on [n] = {1, . . . , n} and V = {Vi : i = 1, . . . , n} be a system of n subsets of [n]. When is there an element g ∈ G so that g(i) ∈ Vi for each i ∈ [n]? If such g exists, we say that G has a G-marriage subject to V . An obvious necessary condition is the orbit condition: for any ∅ 6= Y ⊆ [n], ⋃ y∈Y Vy ⊇ Y g = {g(y) : y ∈ Y } for some g ∈ G. Keevash (J. Com...

introduction: g-proteins have an important role in the cell signaling of numerous receptors. the situation of g-proteins in health and disease and their critical role in the development of diabetic side effects is an interested scientific field. here, the changes in the expression of g-protein subunits (gαi, gαs and gβ) were evaluated in hyperglycemic situation of pc12 cells as a cellular model...

Let n > 0 be an integer and X be a class of groups. We say that a group G satisfies the condition (X , n) whenever in every subset with n + 1 elements of G there exist distinct elements x, y such that 〈x, y〉 is in X . Let N and A be the classes of nilpotent groups and abelian groups, respectively. Here we prove that: (1) If G is a finite semi-simple group satisfying the condition (N , n), then ...