We studied the microwave absorption of multi-walled carbon nanotubes (MWCNTs)-epoxy composites over a continuous frequency range in R-band (26.5 – 40 GHz). The outer diameters (OD) of the MWCNTs were in the 10 – 20 nm range. We measured and analyzed the microstructures, dielectri...
Open access
Research Article10.9734/PSIJ/2015/19439
In the work obtained new matrix composite materials of high density polyethylene (HDPE) with a semiconductor additive. With a measuring instrument bridge E8-7 and E7-20 studied temperature and frequency dependence of the permittivity (ε) and the dielectric loss tangent (tgδ) comp...
Open access
Research Article10.9734/PSIJ/2015/18839
The clear definitions of symmetry operations (or elements) of the crystallographic point group T (tetrahedral group) were clearly pictured. For each element of the group, the permutation (P4) counterparts and the matrix representations were obtained. The orbits and stabilizers fo...
Open access
Research Article10.9734/PSIJ/2015/20331
The magneto-thermal instability of infinite homogeneous self-gravitating rotating partially ionized Hall plasma in the presence of viscosity, electrical resistivity, permeability, porosity, rotation and finite electron inertia is studied by means of linear perturbation analysis....
Open access
Research Article10.9734/PSIJ/2015/10134
The need to design a robot manipulator that can complete tasks satisfactorily in the presence of significant uncertainties brought about the continued advance research in robust system design. This paper focuses on the robustness analysis of a closed-loop controller for robot man...
Open access
Research Article10.9734/PSIJ/2015/18253
The aim of this study is to estimate regional magnetic field trend and depth to magnetic rocks within Maijuju area, North-Central, Nigeria. The Total Magnetic Intensity (TMI) map was gridded, contoured and interpreted for trends, closures and dislocations. The TMI map was reduced...
Open access
Research Article10.9734/PSIJ/2015/21652
The problem of magneto-gravitational instability of rotating viscous, electrical conducting medium in the presence of suspended particles is studied Incorporating, thermal conductivity, and radiative heat-loss function. The Normal mode analysis is applied to derive the dispersion...
Open access
Research Article10.9734/PSIJ/2015/10254
Trivalent Europium ions doped strontium aluminate as the host and passivized by Polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA) and carboxyl methyl cellulose (CMC) shows luminescence arising from various 5D2 and 5D07F4 transition of Eu3+ ion upon excitation at 285 nm. The in...
Open access
Research Article10.9734/PSIJ/2015/20601
Aims: The Morgan’s Lab, at Wesleyan University – Connecticut, experimentally probed the dynamics of an atom/molecule using Semi-Classical approach. The experimental setup at Morgan’s Lab is designed to generate a neutral atomic or molecular beam, which is then excited with a fine...
Open access
Research Article10.9734/PSIJ/2015/20646
The transmission-emission technique of EDXRF was used to determine the abundance and distribution of Arsenic in soil along a Federal Highway in northern Nigeria. Depth profile of the element was investigated. Subsequently, top soils within a depth of 5 cm were collected along par...
Open access
Research Article10.9734/PSIJ/2015/16789