July 2015

Consistency of electrical analogy approach in the prediction of through thickness thermal conductivity of fiber reinforced plastic (FRP) composites with orientation of the square unit cell

From the literature, it is found that two different criteria were followed for the prediction of transverse thermal conductivity (K2) of fiber reinforced plastic (FRP) composites. In the first criterion, the internal anisotropy of the lamina is assumed negligible and K2 is estimated using simple Fourier’s law of 1-D heat conduction applied to representative volume element (RVE). Whereas in the second approach, an...

Author(s): Srinivasa Rao T., Sambasiva Rao G. and Uma Maheswar Gowd B.

July 2015

Optical and structural properties of lead sulphide (PbS) thin films synthesized by chemical method

The influence of dip times on the lead sulphide (PbS) thin films deposited on glass slide substrates via chemical bath deposition (CBD) technique using chemical precursors, nitrate, and thiourea, ) in alkaline medium at 300 K was investigated. The optical, structural and morphological studies were performed by UV-vis spectophotometry, X-ray diffraction (XRD) and scanning electron microscopy (SEM) respectively. The XRD...

Author(s): B. A. Ezekoye, T. M. Emeakaroha, V. A. Ezekoye, K. O. Ighodalo and P. O. Offor

July 2015

The generalized projective Riccati equations method and its applications for solving two nonlinear PDEs describing microtubules

Microtubules (MTs) are major cytoskeletal proteins. They are hollow cylinders formed by protofilaments (PFs) representing series of proteins known as tubulin dimers. Each dimer is an electric dipole. These diamers are in a straight position within PFs or in radially displaced positions pointing out of cylindrical surface. In this paper, the authors demonstrate how the generalized projective Riccati equations method can...

Author(s): Elsayed M. E. Zayed and Khaled A. E. Alurrfi

July 2015

Nanocrystalline Cadmium sulfide (CdS) thin film synthesized at different dip times by chemical bath deposition technique

Nanocrystalline Cadmium sulfide (CdS) thin films were prepared by chemical bath deposition technique on a glass substrates at  a temperature of 80°C  and at different deposition times with composition of cadmium chloride (CdCl2), thiourea (CS (NH2)2), ammonia solution (NH4OH) and triethanolamine (TEA) solution. The characterization of thin films was carried out for the structural, morphological and optical...

Author(s): B. A. Ezekoye, K. O. Ighodalo, V. A. Ezekoye, T. M. Emeakaroha, J. I. Ezema and P. O. Offor