we have investigated the electronic structure and thermodynamic properties of supercell of the
-al2o3 by first-principles calculation in framework of density functional theory (dft) and full potential linearized augmented plane wave (fp-lapw) with generalized gradient approximation (gga) and by quasi-harmonic debye model. our calculated value for direct band gap of α-al2o3 is 7.2 ev which is v...

objective: the sheehan disability scale (sds) assesses disability in four domains of home management, work responsibilities, close relationships and social life. the main objective of this study was to develop the persian version of the sds. method: two steps of field work followed the persian translation and cultural adaptation of the tool: first, the internal consistency and convergent validi...

the aim of this study was to investigate the effects of starters and storage temperature (4 ºc, 25 ºc) onmicrobiological and physicochemical properties, volatile compounds and sensory evaluation of kefir.kefirs produced by kfa and chr. hansen starters were stored at 4 ºc and 25 ºc for 40 days. ph andacidity at 4 ºc did not change (p ≥ 0.05), while at 25 ºc ph and total solid decreased as well a...

background: dyssynergic defecation disorder (dd) has recognized as the main factor for chronic functional constipation. this was a debilitating disease effective on diverse aspects of physical, psychological and social functions as well as patients’ quality of life generally. modern studies show positive impact of biofeedback therapy on dyssynergic defecation. this study was evaluated the effic...

background and objective : given the importance of rapid diagnosis for fungal rhinosinusitis, this study aimed to evaluate the use of nested pcr to identify aspergillus and mucor species in clinical samples from patients with suspected fungal rhinosinusitis. methods : functional endoscopic sinus surgery specimens were collected from 98 patients with rhinosinusitis from 2012 to 2013. all samples...

aim : the aim of present study was to screen two categories of psychiatric disorders in chronic functional constipation. background : it has been established that the prevalence of mood and anxiety disorders among patients with functional gastrointestinal disorders is higher than in the general population. patients and methods : fifty four constipated patients were recruited from patients refer...

A new method has been developed within the framework of density functional theory to aid in the study of the dielectric properties of multi-component systems, with explicit treatment of surface and interface effects. Specially, we have determined the position dependent dielectric constant profiles for Si–SiO2 and SiO2polymer systems.We find that at regions close to surfaces and interfaces, the ...