نتایج جستجو برای: population structure
تعداد نتایج: 2182262 فیلتر نتایج به سال:
Pedigree information which collected from 1979 to 2012 were used to study the genetic variability and population structure of Raeini Cashmere goat, taking kids born from 2009 to 2012 into account as reference population. Averages of inbreeding coefficients in whole and inbred populations were computed to be 0.04% and 4.41%, respectively. Considering the reference population, average inbreeding ...
Here, the population transfer between two specific levels of Cesium atomunder the influence of chirped laser source has been numerically investigated. The maingoal of this study is the engineering of the population transfer between the 62S1/2 and 62P1/2levels of Cesium which is corresponding to its D1 transition line using a chirped lasersource. Constructing the system Hamiltonian, as well as t...
This study was carried out to investigate the genetic diversity and population structure of 90 specimens of Oxynoemacheilus argyrogramma collected from Sepidbarg, Gamasiab and Ghaleji rivers, in the west of Iran. Analyses using three microsatellite loci indicated that the average number of alleles in the population was 12, which was well above the reported values for freshwater fishes. The expe...
Information on the genetic structure of marine species is essential for stock improvement programs. In orderto analyses the genetic diversity of the Hawksbill turtle (Eretmochelys imbricte) by the microsatellite geneticmethod, 64 samples were caught from the beaches located in Kish and Qeshm islands. Polymerase chainreactions (PCR) of genomic DNA extracted from the samples wer...
Background and purpose: Population aging is one of the most important issues in demography that has attracted much attention. In Iran, the population is changing from young structure to an old structure. This fast transition calls for designing studies about population ageing in all provinces. This study was conducted to determine the population structure in Mazandaran province. Materi...
let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...
Study of distribution of elderly population in Chahar Mahal and Bakhtiari Province from 1966 to 2011
Background and aims: Nowadays, the age structure of Iran is transitioning from youth to elderly. Although, the elderly population are still accounted for a small portion of the population; however, the population growth rate of this age group is growing compared to the growth of the total population. Therefore, understanding of the changes of this population is necessary. This study aimed to id...
Genetic Diversity and Population Structure of Iranian tulips revealed by EST-SSR and NBS-LRR Markers
The genus Tulipa L. (Liliaceae) comprises about 100 species and Iran is considered as one of the main origins of tulips. In this research, genetic diversity and population structure of 27 wild populations of tulips collected from Iran were studied by 15 highly polymorphic and reproducible expressed sequenced tag-simple sequence repeat (EST-SSR) markers and 8 nucleotide binding site (NBS)-enzyme...
the main purpose of this research was to study the relationship between organizational structure and burnout among high school teachers. research method was descriptive correlational. to collect data, two questionnaires were used: organizational structure with reliability coefficient of 93 % and job burnout with reliability coefficient of 95 %. the population consisted of all high school teache...
this study tried to explore disciplinary variations of web blurbs across soft and hard knowledge fields on the one hand, and to illustrate how academic publishers exploit interactional metadiscourse devices in move structure of their blurbs on the other.
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