Recent molecular evidence suggests that Sciurus vulgaris populations from Calabria (southern Italy) are distinct from those occurring in northern and central Italy. Here, we re-analyzed using multivariate and univariate techniques an historical dataset provided by Cavazza (1913), who documented measurements for the now extinct squirrel population from Campania. Both univariate and multivariate ...

the field study was conducted in one district of educational-experimental forest at tehran university (kheirood-kenar forest) in the north of iran. eighty-five soil profiles were dug in the site of study and several chemical and physical soil properties were considered. these factors included: soil ph, soil texture, bulk density, organic carbon, total nitrogen, extractable phosphorus and depth ...

Social environment risk factors present in schools and communities have not been thoroughly investigated. This study cross-sectionally examined the social environments of schools and communities, and their influence on adolescent alcohol and drug use. Survey responses of eighth grade students (N = 2309), a random half of their parents (n = 943), community leaders (n = 118), school principals (n...

Objective: The purpose of this study was to examine the investigate the relationship between resiliency and immune system activity of students. Methods: This research is descriptive and correlational. The population consist of all students of the faculty science of Azad university in Ardebil. 100 students were selected with sampling method. The students answere...

List-based samples are often biased because of coverage errors. The problem is especially acute in societies where the level of internal migration is high andwhere record keeping on the population is not reliable.Weproposea solutionbasedon spatial sampling that overcomes the inability to reach migrants in traditional area samples based on household lists. A comparison between a traditional stud...

BACKGROUND The last two decades have seen a growing trend towards the research of voting behavior in post-communist countries. Urban sociology theorists state that not only space structures influence political participation, but also space structures are changing under the influence of global, local, and individual factors. The growing role played by information in the globalised world has acce...