finished in 1797, exhibits to the viewer a skillful example of conventional late 18 th-century landscape painting. Executed in oil on canvas and measuring about 120 centimeters in width and about 80 centimeters in height, the Frenchman's picture presents a meticulously detailed view of a monastery nestled in the rolling hills of Tuscany. shows us a scene on the banks of a river outside a small ...

In the first decades of the nineteenth century, a growing preoccupation with the perceived exoticism of the Orient, the geographical area equivalent to contemporary notions of Northern Africa and the Near East, emerged in France and other Western countries. While the Oriental Other had fascinated Europeans for centuries, a distinctive confluence of political events, aesthetic tastes and scienti...

This investigation deals with the numerical simulation of entropy generation at mixed convection flow in a lid-driven saturated porous cavity submitted to a magnetic field. The magnetic field is applied in the direction that is normal to the cavity cross section. The governing equations, written in the Darcy–Brinkman–Forchheimer formulation, are solved using a numerical code based on the Contro...

In this paper, Optimal Homotopy Asymptotic Method (OHAM) is combined with Galerkin method to investigate the MHD Jeffery-Hamel flows in non-parallel walls for strongly nonlinear ordinary differential equations. Results for velocity profiles in divergent and convergent channels for various values of Hartmann and Reynolds numbers are compared with numerical method (the Runge-Kutta method of order...

" It is not time or opportunity that is to determine intimacy – it is disposition alone. Seven years would be insufficient to make some people acquainted with each other, and seven days are more than enough for others. "-Sense & Sensibility, by Jane Austen. Sex has always been a topic of interest for the popular media where stories of promiscuous young adults and celebrity pregnancies stimulate...

Hartmann-Shack wavefront sensors are widely used to measure wavefront aberrations. Their applications in biomedical physics are mainly in the fields, where lasers are used for diagnostics or treatment, especially in opthalmology. In a number of applications, e.g. retina scanning, the imaging performance is limited by temporal aberration fluctuations. A fast Hartmann-Shack sensor in combination ...

A flow of electrically conducting fluid in the presence of a steady magnetic field has a tendency to become quasi two-dimensional, i.e. uniform in the direction of the magnetic field, except in thin so-called Hartmann boundary layers. The condition for this tendency is that of a strong magnetic field, corresponding to large values of the dimensionless Hartmann number (Ha >> 1). This is analogou...

The problem of magnetohydrodynamic flow and heat transfer of a viscous, incompressible, and electrically conducting fluid past a semi-infinite unsteady stretching sheet is analyzed numerically. The problem was studied under the effects of Hall currents, variable viscosity, and variable thermal diffusivity. Using a similarity transformation, the governing fundamental equations are approximated b...

The hydromagnetic Couette flow of a viscous incompressible electrically conducting fluid bounded by two infinite parallel non-conducting plates in the presence of a uniform transverse magnetic field is studied on taking Hall currents into account. The relevant equations are solved analytically. The solution obtained shows that the inclusion of Hall currents gives some interesting results. It is...

The roll of melting heat transfer on magnetohydrodynamic natural convection in a square enclosure with heating of bottom wall is examined numerically in this article. The dimensionless governing partial differential equations are transformed into vorticity and stream function formulation and then solved using the finite difference method (FDM). The effects of thermal Rayleigh number (Ra</em...