Design of some crystal and quasicrystal networks, based on rhombellane tiling,is presented. [1,1,1]Propellane,is a synthesized organic molecule; its hydrogenated form, the bicyclo[1.1.1]pentane,may be represented by the complete bipartite graph K2,3 which is the smallest rhombellane. Topology of translational and radial structures involving rhombellanes is described in terms of vertex symbol, c...

in this paper, we examine that some simple $k_4$-groups can be determined uniquely by their orders and one or two irreducible complex character degrees.

We study natural cluster structures in the rings of regular functions on simple complex Lie groups and Poisson–Lie structures compatible with these cluster structures. According to our main conjecture, each class in the Belavin–Drinfeld classification of Poisson–Lie structures on G corresponds to a cluster structure in O(G). We prove a reduction theorem explaining how different parts of the con...

carbon nanotubes (cnts) are specific structures with valuable characteristics. in general, the structure of each nanotube is defined by a unique chiral vector. in this paper, different structures of short single-walled cnts are simulated and their mechanical properties are determined using finite element method. for this aim, a simple algorithm is presented which is able to model the geometry o...

the socioeconomic (se) status is considered tobe one of the most important health risk factorsnowadays. a simple search showed that onlyin 2011, more than 1100 articles were cited inpubmed about the relationship of health and sestatus. however, there are many inquiries aboutthis association. the se status is a complex andmultidimensional issue, and there is no goldstandard method to measure it,...

the molecular geometry of complex of adenine with 8 water molecules was calculated with hartree-fock (hf). the standard 6-31g(d) basis set has been employed. the existence of c-h…o hydrogen bonds between the water molecules and the hydrophobic part of nucleobase is stablished. we optimized structures and computed interaction energies of all complexes of adenine with water molecules step by step...

this paper aims at investigating the acquisition of italian complex predicates by native speakers of persian. complex predication is not as pervasive a phenomenon in italian as it is in persian. yet italian native speakers use complex predicates productively; spontaneous data show that persian learners of italian seem to be perfectly aware of italian complex predicates and use this familiar fea...