Abstract The local field correction to the spontanous dacay rate of an impurity source atom imbedded in a disordered dielectric is calculated to second order in the dielectric density. The result is found to differ from predictions associated with both ”virtual” and ”real” cavity models of this decay process. However, if the contributions from two dielectric atoms at the same position are inclu...

Non-supersymmetric black holes carrying both electric and magnetic charge with respect to a single Kaluza-Klein gauge field have much in common with supersymmetric black holes. Angular momentum conservation and other general physics principles underlies some of their basic features. Kaluza-Klein black holes are interpreted in string theory as bound states of D6-branes and D0branes. The microsco...

The ab-initio analysis of a continuous system starts with the microscopic theory of the material, usually expressed in terms of partial differential equations, while a system analysis starts with its global properties and interconnections. These two ends must meet for an accurate and effective model of continuous systems. The macroscopic interaction between components is consistently defined by...

background: giardia duodenalis is one of the most common human intestinal pro-tozoan parasites worldwide and is endemic throughout the world with a vast range of mammalian hosts. the present study aimed to identify the prevalence of g. duo-denalis isolates and determine the most common of its assemblages in the patients referring to health centers and hospitals in fars province, iran that will ...

background: coccidiosis is an intestinal disease of chickens caused by various species of proto­zoan parasites within the genus eimeria . diagnosis and genetic characterization of different spe­cies of eimeria are central to the prevention, surveillance, and control of coccidiosis. the aim of this study was to detect different chicken eimeria species from several areas in khuzestan, south­west ...

the microscopic and geomechanical properties of igneous building stones include the level of alteration, presence of micro cracks, peak strength, porosity, proportion of detrimental minerals, etc. porosity is reportedly of a devastating impact on the peak strength of igneous rocks. the quartz diorite rock samples in this study were selected from five quarries in natanz, iran and subject to micr...

purpose : this study was performed to compare complications and clinical course of microscopic and macroscopic hyphema resulting from blunt ocular trauma methods : in a prospective observational case series during the period 21 march 2010 to 20 march 2011 all referred patient with traumatic hyphema to ophthalmic emergency ward of ahvaz, main city of southwest of iran that met inclusion criteria...

of the many diverse arts that flourished during the third millennium bc, textiles played an especiallysignificant role in society. archaeological textiles offer an important source of material cultural testimony fordaily life in ancient times- relating simultaneously to agriculture, pastoralism, trade, migration, ritual, and soforth as well as to craft technologies. the study of the techniques ...