Spondylolysis is a condition seen in approximately 6-8 % of the population [1]. It involves a defect in the pars interarticularis precipitated by repeated low grade trauma resulting in a stress fracture. The defect is occupied by fibrocartilagenous tissue resulting in non-union [2]. The prevalance is higher among athletes regularly performig hyperextension and rotation activities to the lumbar ...

the purpose of this study was to examine the effect of coping stress skills training on stress and problem solving skill in taleghani dormitory students in kermanshah medical sciences university. the research method is experimental and has been done with pre-test, post-test and control group. research tools were harry inventory (2005) and endler and parker coping scale of stressful situation (1...

electro-thermo-elastic stress analysis of piezoelectric polymeric thick-walled cylinder reinforced by boronnitride nanotubes (bnnts) subjected to electro-thermo-mechanical fields is presented in this article. the electro-thermo-elastic properties of piezoelectric fiber reinforced composite (pefrc) was studied by a modified xy micromechanical model capable of exhibiting full coupling relation be...

determination of porosity, permeability, and pore volume compressibility of reservoir rocks and those variations with effective stress changes are of great interest in petroleum engineering. this paper has studied the influence of pore types of carbonate reservoir rocks on pore volume compressibility as well as klinkenberg permeability and porosity at different stress values. in the current stu...