co-channel interference is a major factor in limiting the capacity and link quality in cellular communications. as the co-channel interference is modeled by lognormal distribution, sum of the co-channel interferences of neighboring cells is represented by the sum of lognormal random variables (rvs) which has no closed-form expression. assuming independent, identically distributed (iid) rvs, the...

the data on the effect of ethylene concentration on polymerization rate for several modifications of modern highly active titanium–magnesium catalysts ticl4/mgcl2 are presented. these catalysts differ in titanium content and conditions of support preparation, activities, and the shape of kinetic curves. it is found that the observed order of polymerization rate with respect to ethylene in the r...

background: leishmaniasis is a widespread problem, especially in the tropical and subtropical countries. since understanding epidemiologic and geographical distribution of the diseases is necessary for prevention and control of leishmaniasis. this study was conducted for epidemiological survey of cutaneous leishmaniasis in north khorasan province, using gis during the years 2006-2013.methods: i...

introduction: equity in health means justice in the distribution of community health. the purpose of justice in health is to consider health needs of all people regardless of their geographical location or cultural, economic, and social status. the aim of this study was to assess distribution of specialists based on population (100,000 people) in public hospitals of iranian provinces during 201...

purpose : to investigate the validity of pentacam derived parameters like corneal volume distribution and percentage increase in volume in differentiation of mild to moderate keratoconus from normal corneas methods : forty eyes with mild to moderate keratoconus and 200 normal eyes were studied by pentacam. corneal volume was calculated within diameters from 1.0 to 7.0 mm with 0.5 mm steps cente...

background: scorpions are known as the most widespread poisonous creatures that cause casualties and death to human. they are distributed in tropical and subtropical areas. among the sixteen iranian island in the persian gulf, qeshm island is the biggest and is located in the focus of the important internal and international commercial marinelines. furthermore, thousands of tourists also visit ...