introduction census data of iran show that about 68.5% (1956) to 29% (2011) of rural population has decreased over the past half-century. rural population has rapidly declined over the last half century and is influenced by several factors, one of which is rural- urban migration. although the percentage of rural to urban migration (20%) and urban to rural one (17%) from 1996 to 2006 show less d...

background & objectives: streptozotocin (stz) is used for induction of type-1 diabetes mellitus in animal models. its beta-cytotoxic action results in sudden release of insulin leading to severe hypoglycaemia and even mortality. however, its sensitivity varies with species. present investigation was aimed at studying stz induced acute clinical effects in rabbits. methods: streptozotocin@ 65...

difference aspects of multinomial statistical modelings and its classifications has been studied so far. in these type of problems y is the qualitative random variable with t possible states which are considered as classifications. the goal is prediction of y based on a random vector x ? ir^m. many methods for analyzing these problems were considered. one of the modern and general method of cla...

PURPOSE To investigate the morphological aspects of the healing of traumatic wounds in rats using low-power laser. METHODS Twenty four non isogenic, young adult male Wistar rats (Rattus norvegicus) weighing between 200 and 300 g was used. The animals were randomly distributed into two groups: Control (GC) and Laser (GL), with 12 animals each. After shaving, anesthesia was performed in the dor...

BACKGROUND Most studies of risk factors for alcohol-related problems have focused on biological family history as a primary risk factor. However, other factors, such as early-age heavy drinking, are also risk factors for sustained or progressive heavy consumption. Little is currently known about the mechanisms underlying binge or heavy drinking. METHODS This study examined the acute subjectiv...

background: implementing community-based psychiatric services is one of the priorities of the who/emro mental health programs. this study presents an aftercare service, as a community based-service, for patients with severe mental illness (smis).   methods : in this randomized controlled clinical trial design, 176 patients, who attended selective hospitals with smi, were allocated into three gr...

While migration is a basic element of population dynamics in most societies, in Iran, rural-urban migration is a particular concern of both social scientists and policy makers. Rural-urban migration accounts for over half of the growth of most Iranian cities. On the other hand, this movement is often cited as having negative effects on rural area, including a shortage of supply of agricultural ...