this paper reports a cfd modeling study to investigate the hydrogen-air mixture combustion in a micro scale chamber. nine species with nineteen reversible reactions were considered in the premixed combustion model. the effect of operational and geometrical conditions including; combustor size, wall conductivity, reactant flow rates and hydrogen feed splitting on combustion stability and outlet ...

When the cornea of the eye dissolves, most commonly secondary to infection or trauma, the ventral wall of the anterior chamber of the eye is no longer supported and thus bulges forward, enlarging the anterior chamber volume. This is referred to as a corneal melt, and it has a unique CT appearance that has not been previously described.

background: the indispensable use of agrochemicals has created serious threats for earthworms abundance and their population therefore, several earthworm protocols have gained acceptance for use in tests to assess the effects of soil chemicals on soil organisms. dichlorovos, an organophosphorus pesticide, is one of the widely used pesticides in agricultural fields of m.p., central india. the ai...

background: in order to deliver the precise dose to the target in radiotherapy, absorbed dose to water at the reference point should be assessed. when the calibration procedure is performed for a reference dosimeter in the 60co beam of a secondary standard dosimetry laboratory (ssdl), the total uncertainty in absorbed dose to water (dw) is estimated to be approximately 1.5%. this study attempts...

Background Although the depth of the counting chamber is an important factor influencing sperm counting, no research has yet been reported on the measurement and comparison of the depth of the chamber. We measured the exact depths of six kinds of sperm counting chambers and evaluated their accuracy. MaterialsAndMethods In this prospective study, the depths of six kinds of sperm counting chamber...

The Generalized Extreme Value (GEV) distribution is used to model the electric field inside a Reverberation Chamber (RC). GEV distribution is particularly indicated for this application where the maximums of the field are studied, as it specifies the theoretical distribution of the maximums according to the Fisher-Tippett theorem. In a first part of this paper we present the Fisher-Tippett theo...

Deformation of the material during cyclic expansion extrusion (CEE) is investigated using upper-bound theorem. The analytical approximation of forming loads agrees very well with the FEM results for different amounts of chamber diameter, friction factor and also for lower die angles. However, the difference between analytical and numerical solution increases at higher die angles which are expla...