In this paper we use a class of stochastic functional Kolmogorov-type model with jumps to describe the evolutions of population dynamics. By constructing a special Lyapunov function, we show that the stochastic functional differential equation associated with our model admits a unique global solution in the positive orthant, and, by the exponential martingale inequality with jumps, we dis...

objective: taurodontism is a dental anomaly characterized by elongation of root body and apical displacement of the pulp chamber floor associated with shortening of roots and their narrowing at the cementoenamel junction (cej). due to having a dilated apical one-third, these teeth may cause complications during extraction, locating canal orifices and instrumentation. this study aimed to assess ...

epilepsy is one of the common disorders in human community. clinical observations have shown that epileptic patients have often difficulty in learning and memory. kindling is a laboratory model for studying epilepsy and its complications. this experiment was designed to study the effect of chemical kindling on schaffer collateral-ca1 pyramidal cell synaptic transmission using pentylenetetrazole...

background chronic kidney disease (ckd) is an emerging worldwide epidemic but littledata concerning african populations are available. objectives we aimed to assess prevalence of ckd in adult populations of saint-louis, northern senegal. patients and methods in a population-based survey between january and may 2012, we included 1037 adults ≥ 18 years of age who resided in saint-louis. socio-dem...

this is a descriptive comparative field study. the aim is to describe views of male nurses and teachers about increasing population and then compare the view with each other. sample was 40 male nurses and 40 male teachers which selected by simple random sampling. the tool for data gathering was a questionnaire with three parts. the first part was demographic data, the second and third part were...

while pterygium is considered a common eye disorder, the etiology and pathogenesis is still not known. the aim of this study was to describe the prevalence of pterygium and pinguecula in the over 40 population of shahroud and assess associated factors. the present study is part of the phase one of the shahroud eye cohort study conducted in 2009, in which the target population was people between...

objective:  to evaluate the frequency of different psychiatric disorders among 7 to 12 years old children in urban areas of tehran. method: a sample of 799 children (6 to 11 years old) were selected from 250 clusters of the entire 22 municipality areas of tehran using a multistage sampling method from 250 clusters from the entire 22 municipality areas of tehran.. after responding to a persian v...