A fractional [a, b]-factor of a graph G is function h from E(G) to [0, 1] satisfying \(a \le d_G^h(v) b\) for every vertex v G, where \(d_G^h(v) = \sum\limits_{e \in E(v)} {h(e)} \) and E(v) {e uv : u ? V (G)}. called b]-covered if contains with h(e) 1 any edge e G. (a, b, k)-critical covered — Q ? V(G) ?Q? k. In this article, we demonstrate neighborhood condition be covered. Furthermore, claim...

A bstract We study the spin correlations to probe time-reversal (T) asymmetries in decays of ? b ? V ( = ? , ? 0 ? K ?0 ). The eigenstates T-odd operators are obtained along with definite angular momenta. obtain from complex phases among helicity amplitudes. give distributions ?( p? ? ) PP? and show corresponding correlations, where P ? pseudoscalar mesons. Due conservation s quark ?, we deduce...

For two vertices u and v in a graph G = (V,E), the detour distance D(u, v) is length of longest − path G. A called detour. subsets B V , D(A,B) defined as min{D(x, y) : x ∈ A, y B}. an A-B joining sets A,B ⊆ where B. vertex said to lie on if some A−B set S E edge-to-vertex every incident with edge or lies pair edges S. The number dn2(G) minimum order its any basis Graphs size q for which 2 are ...

The root of Ophiopogon japonicus has been used as a traditional Chinese medicine and also a functional food ingredient for a long time in China. In the present study, 17 different homoisoflavonoid compounds were identified in the root extract of O. japonicus by HPLC–DAD and LCMS/MS analyses. The antioxidant activity of the of chloroform/methanol (1:1, v/v), methanol and 70% ethanol extracts, an...

Using ab initio calculations, the hydrogen desorption from Magnesium hydride (MgH2) was studied. We presented the calculated nuclear quadrupole coupling constants (NQCCs) of hydrogen atom in various systems of MgH2. The effect of interactions of some metal atoms as well as Boron atom with MgH2 host matrix; (MgH2+M) nanostructures (M=Al, Ti, V, Fe, Ni ...

Using ab initio calculations, the hydrogen desorption from Magnesium hydride (MgH2) was studied. We presented the calculated nuclear quadrupole coupling constants (NQCCs) of hydrogen atom in various systems of MgH2. The effect of interactions of some metal atoms as well as Boron atom with MgH2 host matrix; (MgH2+M) nanostructures (M=Al, Ti, V, Fe, Ni ...

Using the Lennard-Jones (12-6) potential, a new equation of state is obtained that can predict properties of both gases and liquids relatively well. This equation of state is given as (Z-a)V2=(A/V2)-B, where Z is the compressibility factor, A and B are constants, and a is an adjustable parameter that depends on the temperature, volume and the nature of the fluid, and i...