In this paper, Genetic Algorithms (GA) has been applied to calculate the optimized parameters of Elliptical Microstrip antenna. The fitness function has been developed in GA and the optimized dimensions of the antenna have been calculated. The output obtained is the optimized semimajor axis length ‘a’ from which the other parameters i.e. semi-minor axis length and odd mode frequency are calcula...

In this paper, the effects of turbulent biological tissues (TBT) on propagation properties coherent Laguerre-Gaussian (CLG) beams are studied. Based turbulence theory and using power spectrum refractive-index model, expression formulae average irradiance intensity spreading a CLG beam propagating in TBT derived. The influence distance, orders, wavelengths tissue parameters then investigated num...

A set of dynamical equations are derived for a slender tube of isolated magnetic ux generalizing a model due to Spruit. The tube is assumed to consist of eld lines which twist about the tube's axis at some rate q. The equations describe the evolution of the axis and the evolution of the twist. They include the interaction between twist and motions of the axis described as writhing. Through this...

Abstract—Exact solution of an unsteady flow of elastico-viscous electrically conducting fluid through a porous media in a tube of elliptical cross section under the influence of constant pressure gradient and magnetic field has been obtained in this paper. Initially, the flow is generated by a constant pressure gradient. After attaining the steady state, the pressure gradient is suddenly withdr...

the aim of this study is investigating the transport mechanism of ibuprofen chiral isomers inside singlewall carbon nano tube (swcnt) using mathematical modeling. to achieve this goal, molecular dynamicssimulation has been performed to evaluate the interactions of ibuprofen isomers with swcnt in an aqueoussolution. results show that both chiral forms of ibuprofen molecules enter and remain insi...

The eddy-current losses in a simplified model of the SIS100 dipole magnet (Fig. 1a) comprising the elliptical beam tube are calculated. The standard 3D Finite Element (FE) formulation is augmented by a shell element representation of the thin beam tube. Using this approach, the mesh construction can be restricted to the beam tube surface and the outer parts, avoiding the construction of element...

The cardiomyocyte cytoskeleton, composed of rigid and elastic elements, maintains the isolated cell in an elongated cylindrical shape with an elliptical cross-section, even during contraction-relaxation cycles. Cardiomyocyte mitochondria are micron-sized, fluid-filled passive spheres distributed throughout the cell in a crystal-like lattice, arranged in pairs sandwiched between the sarcomere co...

Two optical methods, light absorption and LDA, are applied to measure the concentration and velocity profiles of droplet suspensions flowing through a tube. The droplet concentration is non-uniform and has two maxima, one near the tube wall and one on the tube axis. The measured velocity profiles are blunted, but a central plug-flow region is not observed. The concentration of droplets on the t...

Although the tube theory is very popular and successful, the tube concept remains evasive and ill defined. This paper proposes a simple computer algorithm to construct the tube axis as a center line of the cloud of chain configurations at different moments of time. We test this algorithm on trajectories generated from simulations of concatenated well entangled ring polymers, thus avoiding all d...