A graphite tube electric furnace has been designed to facilitate measurement of electrical properties of small refractory samples at high temperatures. Conductivity data are obtained with the sample at a uniform temperature ...

The critical behaviour of a dimer-monomer (BC+A to 1/2C2+AB) irreversible catalytic surface reaction is investigated by means of Monte Carlo simulation technique. On a hexagonal lattice (each site having six nearest ...

The linear and nonlinear propagation characteristics of low-frequency obliquely propagatingmagnetoacoustic waves in dense electron–positron–ion magnetoplasmas are studiedin this paper by using the quantum magnetohydrodynamic ...

It is shown that the large amplitude low-frequency electromagnetic drift waves in electron–positron–ion plasmas might give rise to dipolar vortices. A linear dispersion relation of several coupled electrostatic and ...

In the world of advance development, rapid growth for any nation, country or individual is a must thing to have. There are several studies and researches that have put forward to us, not only ...

In the present study, we discuss the peristaltic flow of a Johnson—Segalman fluid in an endoscope. Perturbation, homotopy, and numerical solutions are found for the non-linear differential equation. The comparative study ...

Roots pumping systems are widely used in industries to generate vacuum with high pumping speed. In the present work, the performance parameters of indigenously developed Roots pumping system have been ...

The phase diagram of the dimer-trimer model has already been studied for Kagome and hexagonal lattices, the detail of which can be found in the literature. Here, we have studied the same model on a square lattice to look ...

In this paper, we study the influence of atomic decay on the linewidth of a two-photon micromaser using an exact Hamiltonian approach. We consider a three-level cascade atomic system (where each level has a finite lifetime) ...

The purpose of this paper is to construct spherical thin-shell wormhole solutions through cut and paste technique and investigate the stability of these solutions in the vicinity of modified Chaplygin gas. The Darmois-Israel ...