a small clinical and serological survey to determine the prevalence and severity of trachoma was conducted in 11 iranian villages located in the dezful and kazerun areas. no evidence of severe active disease or severe squeal was found among the 389 individuals examined. seventy-seven per cent of those examined were more than 12 years of age. the prevalence of active trachoma by clinical examina...

Density functional approach was used to study the isotropic- nematic (I-N) transition and calculate the values of freezing parameters of the Gay- Berne liquid crystal model. New direct and pair correlation functions of a molecular fluid with Gay- Berne pair potential were used. These new functions were used in density functional theory as input to calculate the isotropic- nematic transition den...

The elastic-plastic behavior of the material is considered to analyze the effect of an external circumferential crack on a pipe with thickness transition and double slopes. Using the extended finite element method (XFEM), the J-integral of 3D cracks were investigated and compared between straight pipes and pipes with thickness transition and different slopes. Considering internal press...

A new gastropod fauna of Burdigalian (early Miocene) age is described from the Iranian part of Makran. The fauna comprises 19 species and represents three distinct assemblages from turbid water coral reef, shallow subtidal soft-bottom and mangrove-fringed mudflat environments in the northern Indian Ocean. Especially the reef-associated assemblage comprises largely new species. This is explained...

We report the result of a 2010 survey of the effects on the Iranian coastline of the tsunami which followed the earthquake of 27 November 1945 (M0 = 2.8 9 10 28 dyn cm; Mw = 8.2), the only large event recorded along the Makran subduction zone since the onset of instrumental seismology. Based on the interview of elderly survivors of the event, we obtained a database of nine values of run-up or s...

To assist the analysis of tsunami hazards for Qatar coastal areas were using numerical model. By Tsunamis waves created from submarine earthquakes magnitude (Mw) 8.6 and 9.0 in Richard scale along Makran Subduction Zone (MSZ) as well landslides with soil volume 1.25 to 2.0 km3 Iranian coast inside Arabian Gulf is considered. TUNAMI-N2KISR model (Al-Salem) was applied this study predict propagat...

The present work investigates the effect of the elliptical three-dimensional (3D) cracks on a pipe with thickness transition, considering internal pressure. Level sets were defined using the extended finite element method (XFEM), the stress intensity factors (SIFs) of 3D cracks were investigated and compared between straight pipes and pipes with thickness transition. The results show that the X...

Background: The birth of the first child and the couple’s transition to parenthood can significantly change individuals’ marital life. Accordingly, this study aimed to identify psychological challenges to transition to parenthood in first-time parents. Methods: The present study employed a qualitative approach based on the content analysis method. The research population included all first-tim...