A m,n -bipartite graph is a bipartite graph such that one bipartition has m vertices and the other bipartition has n vertices. The tree dumbbell D n, a, b consists of the path Pn−a−b together with a independent vertices adjacent to one pendent vertex of Pn−a−b and b independent vertices adjacent to the other pendent vertex of Pn−a−b. In this paper, firstly, we show that, among m,n bipartite gra...

introduction: effective perception of fear signals is crucial for organism survival. when threated, the organism indicates defensive behaviors. methods: elevated plus–maze has high efficiency for measurement of fear behavior and is widly used for fear behavior determination. increase in two parameters percent of openarm entries (%oae) and percent of time spent in the open-arm (%oat) in the elev...

The terminal Wiener index TW = TW (G) of a graph G is equal to the sum of distances between all pairs of pendent vertices of G . This distance–based molecular structure descriptor was put forward quite recently [I. Gutman, B. Furtula, M. Petrović, J. Math. Chem. 46 (2009) 522–531]. In this paper we report results on TW of thorn graphs. Also a method for calculation of TW of dendrimers is descri...

teins on the tumor cells was shown to be specific, pH de pendent, and concentration dependent. Native ricin, abrin, D-galactose, and its sterically related saccharides inhibit this specific binding, while concanavalin A, bovine serum albumin, heat-denatured abrin or ricin, and other sac charides do not. In the presence of D-galactose, the inhibi tion of protein biosynthesis by ricin does not oc...

The thermotropic liquid crystalline behavior of a new kind of amphiphilic polymer without mesogens is reported. The existence and structure for the polymeric mesophase are confirmed and characterized by DSC, X-ray diffraction, optical polarized microscopy, and temperature-dependent FTIR. Due to strong interactions between pendent long alkyl chains, we conclude that some hydrophobic semirigid ro...

Art Assessment: Strongly Like & Like 34 76%° 26% * Indifferent 46 52% 26% * Strongly Dislike & Dislike 20 45% 35% Note: 0Indicates statistical significance at the 0.05 level according to binomial test. A chi-square test was also performed for the contingency table relating preference and identification for all Ss, and, as might be expected from the preceding, preference and identification were ...

Two series of novel aromatic polyamides containing pendent dimethyltriphenylamine moieties were prepared based on N,N-bis(4-aminophenyl)-N′,N′-di(4-methylphenyl)-1,4-phenylenediamine (4) and N,Nbis(4-carboxyphenyl)-N′,N′-di(4-methylphenyl)-1,4-phenylenediamine (4′). These compounds with similar structures were successfully synthesized by amination reactions of 4-amino-4′,4′′-dimethyltriphenylam...

We present an efficient algorithm to find nonempty minimizers of a symmetric submodular function f over any family of sets I closed under inclusion. Our algorithm makes O(n3) oracle calls to f and I, where n is the cardinality of the ground set. In contrast, the problem of minimizing a general submodular function under a cardinality constraint is known to be inapproximable within o( √ n/ logn) ...

The purpose of this paper is to analyze the Moore-Penrose pseudo-inversion symmetric real matrices with application in graph theory. We introduce a novel concept positively and negatively pseudo-inverse graphs. also give sufficient conditions on elements block matrix yielding an explicit form its pseudo-inversion. Using we can construct graphs for class which are constructed from original by ad...

Novel pH-responsive complexation hydrogels containing pendent glucose (P(MAA-co-MEG)) or grafted PEG chains (P(MAA-g-EG)) were synthesized by photopolymerization. The feasibility of these hydrogels as oral protein delivery carriers was evaluated. The pH-responsive release behavior of insulin was analyzed from both P(MAA-co-MEG) and P(MAA-g-EG) hydrogels. In acidic media (pH 2.2), insulin releas...