The AC current instability mechanisms are investigated in high-Tc superconductor and superconducting tape at conduction-cooled conditions when the electric field and applied current may essentially exceed the critical values of a superconductor. It is shown that there exist the c...
Open access
Research Article10.9734/PSIJ/2014/11069
Commercial transistors have been irradiated with photon of 6 MeV and15 MeV energies and the device characteristics were studied during irradiation process. Along with expected reduction in current gain due to charge carrier trapping and other effects, considerable amount of noise...
Open access
Research Article10.9734/PSIJ/2014/8904
In the present paper, existence of spin glass state using Ising spin model with Edwards-Anderson type of interactions has been investigated by employing numerical simulation (Monte Carlo) technique. The study shows a phase transition from paramagnetic state to spin glass state wh...
Open access
Research Article10.9734/PSIJ/2014/9933
Structural properties of the compounds were examined using an X-ray diffraction (XRD) technique to confirm the formation of phase at different temperature. The electrical current response for equivalent circuit of PZT-5A, resonant frequencies, antiresonant frequencies and mechani...
Open access
Research Article10.9734/PSIJ/2014/10723
This article is devoted to investigation of the mechanism of synchronization of the sources of electromagnetic radiation due to tunneling between two vacuums of the Maxwell-Einstein equations. The implementation of this mechanism permits to avoid the hypothesis of the inflation s...
Open access
Research Article10.9734/PSIJ/2014/9239
The effect of addition of 3-AMINO-1,2,4-TRIAZOLE (ATA) on general and pitting corrosion of three Egyptian austenitic stainless steel samples, namely SS 304L (0.09 Mo), SS 304H (0.43 Mo) and SS 304H (1.15 Mo) in aerated 2.5 M NaCl solution was investigated. The measurements were c...
Open access
Research Article10.9734/PSIJ/2014/10528
The distribution of electron temperature Te and density Ne in a dc glow discharge that is created by a pair of circular parallel electrodes is studied using double probes. The measurement are carried out for the following two modes: in the presence and in the absence of the magne...
Open access
Research Article10.9734/PSIJ/2014/9604
The mass spectra of quarkonium systems at T= 0 are analyzed by solving the non-relativistic radial wave equation using the internal energy potential. The QGP matter is studied through the dissociations of quarkonium states. A modified form of the internal energy potential functio...
Open access
Research Article10.9734/PSIJ/2014/10296
This article presents an investigation of problem of quantum system state’s measurement by using an example of particles registered by a measuring device (screen). Some variants of R-procedure which is responsible for measurements are discussed. New variant of R-procedure is sugg...
Open access
Research Article10.9734/PSIJ/2014/10312
Considering ‘black hole geometry’ as the ‘eternal cosmic geometry’ and by assuming ‘constant light speed rotation’ throughout the cosmic evolution, at any time the currently believed cosmic ‘critical density’ can be shown to be the cosmic black hole’s eternal ‘volume density’. Th...
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Research Article10.9734/PSIJ/2014/10137
Aims: For modeling of large polyatomic systems one may use the variation principle for energy density functional. The key point to make this is to find the functional of kinetic energy in the orbital-free approach. Study Design: We describe a way to find functionals of kinetic en...
Open access
Research Article10.9734/PSIJ/2014/10415
The purpose of this study is to appreciate the estimation of TIEGCM (Thermosphere Ionosphere Electrodynamics General Circulation Model) and that of the 2012 version of IRI (International Reference Ionosphere) in African Equatorial Ionization Anomaly (EIA) region through the diurn...
Open access
Research Article10.9734/PSIJ/2014/9748
The title compound [Co (C7H8N4O)2]Cl2.3H2O, has been synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The title compound crystallizes in a triclinic, space group P-1 with a = 9.3547(5) Å, b = 9.8985(5) Å, c = 12.8840(7) Å, α=10...
Open access
Research Article10.9734/PSIJ/2014/7803
A. Acharyya, P. Sen, E. Chakraborty, P. Sarkar, N. Banerjee, R. Dey, A. R. Mondal, S. Chatterjee & T. K. Sengupta·Physical Science International Journal·2014
In this paper, the authors have proposed a new method for speed control of DC motor drives via modified constant frequency-variable duty (CFVD) pulse width modulation (PWM) technique. The armature of the DC motor rotating in very low speed has to accept abrupt mechanical shocks (...
Open access
Research Article10.9734/PSIJ/2014/9905
Zitterbewegung is the quiver motion discovered by Schroedinger in his 1930 solution of the time-dependent Dirac equation for a free electron. The origin of Zitterbewegung is the interference between positive-energy and negative-energy states. Zitterbewegung is predicted to exist...
Open access
Research Article10.9734/PSIJ/2014/6994