NOTATION A 'Effective area' in Boussinesq ventilation model, see eqn (24) ,4 'Effective area' in non-Boussinesq ventilation model, see eqn (28) A I Area of floor covered by base of fire a Area of vent B Plume buoyancy flux b Plume radius c r Specific heat capacity at constant pressure D Diameter of fire source d Upper-layer depth F Scaled density deficit, a conserved quantity with units of buoy...

in this article, we suggested a novel design of polarization splitter based on coupler waveguide on inp substrate at 1.55mm wavelength. photonic crystal structure is consisted of two dimensional (2d) air holes embedded in inp/ingaasp material with an effective refractive index of 3.2634 which is arranged in a hexagonal lattice. the photonic band gap (pbg) of this structure is determined using t...

Upper limits for the mass-radius ratio are derived for arbitrary general relativistic matter distributions in the presence of a cosmological constant. General restrictions for the red shift and total energy (including the gravitational contribution) for compact objects in the Schwarzschild-de Sitter geometry are also obtained in terms of the cosmological constant and of the mean density of the ...

We investigate the uplink of a power-controlled multi-user distributed antenna system (DAS) with antennas deployed on a circle. Applying results from random matrix theory, we prove that for such a DAS, the per-user sum rate and the total transmit power both converge as user number and antenna number go to infinity with a constant ratio. The relationship between the asymptotic per-user sum rate ...

This paper addresses some questions which have arisen from the use of the Sérsic r 1/n law in modelling the luminosity profiles of early type galaxies. The first issue deals with the trend between the half-light radius and the structural parameter n. We show that the correlation between these two parameters is not only real, but is a natural consequence from the previous relations found to exis...

We have measured the kinematic profile of the early-type (E/S0) lens galaxy in the system 0047−281 (z=0.485) with the Echelle Spectrograph and Imager (ESI) on the W.M. Keck–II Telescope, as part of the Lenses Structure and Dynamics (LSD) Survey. The central velocity dispersion is σ = 229± 15 km s, and the dispersion profile is nearly flat to beyond one effective radius (Re). No significant stre...

which embodies Poiseuille's law of flow and a term which covers the cost of maintenance of blood volume, p is the fall in pressure in dynes/cm. ~, b is the cost of blood volume in ergs/cc, sec. (considered constant), vol is the volume, r is the radius of the section of artery, and 71 is the viscosity of whole blood (also taken as "constant"). At constant flow, f (that is, for any given steady s...

tion. If the researcher offers to assist the Eye Bank in tissue procurement, a partnership is beginning. This might include going with an eye banker to present inservice programs to a group of doctors, nurses, hospital administrators, or others who are close to the supply of tissue. It may be appearing with the eye banker on a radio talk show to explain the need of eye donations. It may be that...