objectives: irritable bowel syndrome (ibs) is a common gastrointestinal disorder. due to its high prevalence and absence of curative therapy, ibs has the potential to create tremendous burden on the health care system. herein, we systematically reviewed the published literature to investigate the epidemiology of ibs in iran. methods: studies that were reviewed in this article were primarily ide...

objective(s): adsorption of immucillin-a (bcx4430) molecule on the pristine and n-doped tio2 anatase nanoparticles were studied using the density functional theory (dft) calculations. the adsorption energy analysis indicated that tio2+immucillin-a complexes including oc-substituted tio2 have higher adsorption energy than the complexes with ot substituted tio2, thus providing more stable configu...

objective: to assess the effect of combination of pulsed electromagnetic fields (pemf) with predatory stress on transected sciatic nerve regeneration in rats.  methods: in sham- operated group (sog) the nerve was manipulated and left intact. the 10-mm rat sciatic nerve gap was created in rats. in transected group (transected) nerve stumps were sutured to adjacent muscle and in vein graft group ...

repairing the damaged nerves caused by physical injury (trauma), is one of the major challenges facing modern medical sciences. evening primrose oil (epo) extraction of oenothera biennis seed that enriches with omega-6,γ-linoleic acid and linoleic acid that they have essential role in myelination and neural membrane structure. the aim of this study was to evaluate the functional recovery of sci...

stabilizations and atomic level quadrupole coupling constant (cq) properties have been investigated for graphene–like monolayers (g–monolayers) of boron nitride (bn), boron phosphide (bp), aluminum nitride (aln), and aluminum phosphide (alp) structures. to this aim, density functional theory (dft) calculations have been performed to optimize the model structures and also to evaluate the cq para...

we have performed density functional theory investigations on the adsorption properties of ammonia molecule on the undoped and n-doped tio2 anatase nanoparticles. we have geometrically optimized the constructed undoped and n-doped nanoparticles in order to fully understand the adsorption behaviors of ammonia molecule. for tio2 anatase nanoparticles, the binding site is preferentially located on...

hepcidin is an innate immune element which decreases the iron absorption from diet and iron releasing from macrophage cell. in contrast to the chemical iron chelators, there has been limited effort applied to the specific use of hepcidin as a new drug for decreasing the iron overload. hepcidin is produced in different biological systems. for instance, e-coli is used for human hepcidin expressio...

today, ecotourism is a major tourist activity around the world. it is based on environment potential through which suitable utilization and conservation of sites under management practices including considering accurate planning, potential, and peoples’ preferences are realized. the present study was conducted to determine people’s recreational preferences using questionnaires to evaluate the e...

in this present work, the kudryashov method and the functional variable method are used to construct exact solutions of the complex kdv equation. the kudryashov method and the functional variable method are powerful methods for obtaining exact solutions of nonlinear evolution equations.

background: dyssynergic defecation is a major cause of chronic functional constipation as a common digestive complaint. we clinically evaluated the effects of biofeedback therapy on the pelvic floor motion indices through magnetic resonance (mr) defecography, quality of life and depression in patients with dyssynergic defecation.   methods : in this clinical trial study, among patients referrin...