We describe the simulation method of modeling the population evolution using Monte Carlo based on the Penna model. Individuals in the populations are represented by their diploid genomes. Genes expressed after the minimum reproduction age are under a weaker selection pressure and accumulate more mutations than those expressed before the minimum reproduction age. The generated gradient of defect...

The Magellanic Clouds have galactocentric distances of 50 and 63 kiloparsecs, making it possible to probe the older populations of clusters and stars in some detail. Although it is clear that both galaxies contain an old population, it is not yet certain whether this population is coeval with the date of formation of the oldest globulars in the Milky Way. The kinematics of this old population i...

Construction of age structures of populations is central to studies of demography of large vertebrates (Caughley 1977). Unlike in the case of the African elephant (Loxodonta africana), there are few published age structures of wild Asian elephant (Elephas maximus) populations (Sukumar 1989, 2003). On the other hand, age/sex structures for several Asian elephant populations are available in repo...

BACKGROUND Spirometry reference values are important for the interpretation of spirometry results. Reference values should be updated regularly, derived from a population as similar to the population for which they are to be used and span across all ages. Such spirometry reference equations are currently lacking for central European populations. OBJECTIVE To develop spirometry reference equat...

templates are very useful tools for diagnosis of malocclusions. a number of templates have been provided for some populations in previous years. since craniofacial characteristics of different ethnic groups are not the same, each population needs its own norms. the aim of this study was to provide orthodontic craniofacial templates for 8-16 year old iranian boys and compare dentoskeletal featur...

background : a detailed study of hidden and hard to reach populations in order to identify their characteristics is essential because they endanger the health of the society by their dangerous behaviors. however, sampling in these populations through conventional sampling methods is impossible due to reasons such as being hidden and lacking a precise frame. methods: in this article, applicable ...