In this paper we present and analyze a stylized model of endogenous growth with international technology spillover effects from the North to the South. The model allows for endogenous structural change and environmental degradation that reduces world output. We find that within this framework the costless technological spillovers foster structural change in both more and less advanced economies...

background: at present, surgery is the best method for chronic anal fissure, but by acquiring more knowledge about the pathogenesis and function of internal anal sphincter, non surgical treatment such as using of glycerin trinitrate, isosorbide, bethancol, diltiazem and butilinum toxin has been suggested. there is controversy about using of l-arginine. the aim of the present study was to compar...

background:   objective: the aim of our study was to assess the effect of storage duration of frozen embryo on art outcome.   materials and methods: in this retrospective study the data of 651 frozen-thawed embryo transfer cycles were assessed over a 36-months period. our patients were categorized according to storage time of freeze. group i: less than 90 days, group ii: between 90-365 days. gr...

background: vitamin d supplementation during pregnancy has been supposed to defend against adverse gestational outcomes. objective: this randomized clinical trial study was conducted to assess the effects of 50,000 iu of vitamin d every two weeks supplementation on the incidence of gestational diabetes (gdm), gestational hypertension, preeclampsia and preterm labor, vitamin d status at term and...

khataminia g, md*; keramati ag, md ahvaz jondi shapoor university of medical sciences, ahvaz, iran *corresponding author: [email protected] purpose: to report the demographics and clinical profile, and outcomes of canalicular laceration repaired with mini monoka monocanalicular stent. method: all patients who had undergone canalicular laceration repair over 4 years (2004-2008) at imam khom...

abstract background: the aim of this study was to determine the auditory performance of congenitally deaf children and the effect of cochlear implantation (ci) on speech intelligibility. methods: aprospective study was undertaken on 47 children in a pediatric tertiary referral center for ci. all children were deaf prelingually and were younger than 8 years of age. they were followed up until 5 ...

mandibular incisor extraction in carefully selected cases as an alternative option to four bicuspid extraction or non extraction treatment has been advocated. the purpose of this study was to determine the degree of improvement in occlusion in patients with bolton discrepancy treated by one lower incisor extraction using peer assessment rating index (par indexes).pre and post treatment dental c...

current mainstay of treatment for human immunodeficiency virus (hiv)-infected patients is highly active antiretroviral therapy (haart) but little is known about the long-term clinical outcome for hiv-infected patients who have received haart. determining factors associated with longterm survival in the course of treatment may allow modification to be made for patients who are at a greater risk ...

the purpose of this qualitative study is to explore the perception of managers and talents of perceived retention factors in the textile industry in yazd province, iran. in this regard, phenomenography is used to map the different perceptions of both talents and their managers. data were collected through semi-structured interviews with 22 talented individuals who were selected according to an ...