in this paper, a new topology for boost z-source inverterbased on switched-inductor cell is proposed. the operating modes of the proposed inverter are analyzed and also a suitable control method to generate the trigger signals of the inverter is presented. having a common earth between the input source and inverter and capability to generate a higher voltage gain by using lower amounts of the d...

in fermented products containing bifidobacteria, factors such as organic acid concentration and b-galactosidase activity are important in the development of flavor and texture of final products. both the process conditions and medium components have significant effects on fluctuation of such factors. the effects of whey permeate powder and yeast extract concentrations, as nitrogen sources was i...

a new mathematical model for identifying pollution sources in aquifers is presented. the model utilizes lagrange constrained optimization method (lcom) and is capable to inversely solve unsteady fluid flow in saturated, heterogeneous, anisotropic confined and/or unconfined aquifers. throughout the presented model, complete advection-dispersion equation, including the adsorption as well as retar...

background : airborne particulate matter is one of the most important atmospheric pollutants. tile sources of particulate matter in the atmosphere are divided into two groups; 1) natural sources and 2) anthropogenic sources. the important components of airborne particulate matter and invarying concentrations are the ubiquitous components of the lower atmosphere. heavy metals are mainly emitted ...

The aim of this article is to give a self-contained approach in module theoretic terms to two fundamental results in block theory, due to Puig 6, 14.6 : first, there is an embedding of the source algebra of the Brauer correspondent of a block of some finite group into a source algebra of that block, and second, the source algebras of the Brauer correspondence can be described explicitly. Our pr...

Open source software development represents a fundamentally new concept in the field of software engineering. Open source development and delivery occurs on Internet time. Developers are not confined to a geographic area. They work voluntarily on a project of their choice. Developers work for peer-recognition and self-satisfaction. Open Source software is always in an evolutionary stage: it nev...