The unique properties of Egyptian blue, a cuprorivaite pigment, were herein studied through holistic computational and experimental approach. A reliable model the crystal was obtained periodic density functional theory calculations, allowing for elucidation its lattice dynamics, including assessment structural, electronic, vibrational properties. From this model, sound assignment inelastic neut...

The enormous increase in the commercial demand for the rubber and the probability of the continuance of this increase in view of the great variety of purposes to which the material can be applied, demands a thorough understanding of its structure, composition and physical/mechanical properties. Hydrogenated Nitrile Butadiene rubber (HNBR) and Chlorosulphonated monomer (CSM) were investigated in...

We have observed several IR bands of CH3CN-BF3 in neon and nitrogen matrices. For the 11B isotopomer in neon matrices, we observed the BF3 symmetric deformation band (nu7) as a doublet at 600 and 603 cm(-1), the BF3 symmetric stretching band (nu6) as a doublet at 833 and 838 cm(-1), the BF3 asymmetric stretching mode (nu13) at 1281 cm(-1) (partially obscured), and the C-N stretching mode (nu2) ...

The present study reports an unusual diffuse reflection Fourier transform (DRIFT) spectrum of ethane adsorbed by gallium oxide. One of the stretching C-H bands in this spectrum with a maximum at 2753 cm(-1) is more than by 100 cm(-1) shifted toward lower frequencies in comparison with gaseous ethane. In addition, the relative intensity of this band is unusually high. This indicates a very stron...

concerning the population growth and urban development, significant growth in the rate of personal car usage has caused more transportation and thus growth in occupying the street areas for parking vehicles. this has caused much transporting problems and traffic. hence concerning the parking issue is crucial in traffic and municipal management.the important issue is the suitable place for the p...

a vertex irregular total k-labeling of a graph g with vertex set v and edge set e is an assignment of positive integer labels {1, 2, ..., k} to both vertices and edges so that the weights calculated at vertices are distinct. the total vertex irregularity strength of g, denoted by tvs(g)is the minimum value of the largest label k over all such irregular assignment. in this paper, we study the to...

The U-slot micro-strip patch antennas were originally developed for bandwidth broadening applications. This study presents a transmission line feed to modify the U-slot stacked rectangular micro-strip patch antenna for Ultra-Wide Band (UWB) communications. The modified antenna has a U-cut loaded with parallel slits and corner slots and is printed on a dielectric substrate of FR4 with relative p...

Multiband (MB) optical fiber transmission systems can unlock additional capacity in existing infrastructures, enabling them to keep up with the increase traffic demand while postponing costly deployments. However, due worse characteristics of MB than C-band-only transmission, network’s overall spectral efficiency decreases when increasing bandwidth. The extent this performance degradation is pa...

A four quasiparticle high-K isomer with a meanlife of 45~2! ms has been identified at 1451 keV in Ta, populated in the Yb(B,a3n! Ta reaction. The isomer decays into a rotational band which is associated with the two-quasiparticle 9 isomer at 75.3 keV. Analysis of the branching ratios within that band and the magnetic moment for the 9 isomer, supports the configuration assignment to the 9 isomer...