نتایج جستجو برای: reproductive number
تعداد نتایج: 1251317 فیلتر نتایج به سال:
The reproduction of spindle poles is a key event in the cell's preparation for mitosis. To gain further insight into how this process is controlled, we systematically characterized the ultrastructure of spindle poles whose reproductive capacity had been experimentally altered. In particular, we wanted to determine if the ability of a pole to reproduce before the next division is related to the ...
BACKGROUND In Lithuania, the right to confidentiality in healthcare for adolescents over the age of 16 was guaranteed in 2010 through the adoption of new legislation. This study sets out to explore changes in Lithuanian residents' attitudes towards confidentiality protection in adolescent sexual and reproductive healthcare (SRH) by comparing data from surveys administered in 2005 and 2012. ME...
objective: crocin, a carotenoid isolated from crocus sativus l. (saffron), is a pharmacologically active component of saffron. nicotine consumption can decrease fertility in males through induction of oxidative stress and dna damage. the aim of this study is to determine the effects of crocin on reproductive parameter damages in male mice exposed to nicotine. materials and methods: in this expe...
reproductive abnormalities cause major losses of sheep production. abattoir materials were used todetermine the extent of reproductive wastage. reproductive tracts were collected from 524 ewes slaughtered at urmia slaughter-house in urmia, northwest of iran, during a period of 12 months. overall, 30.10% of the ewes examined were pregnant. a total of 149 (28.44%) tracts developed acquired reprod...
let g=(v,e) be a graph with vertex set v and edge set e.for two vertices u,v of g ,the closed interval i[u,v] ,consists of u,v and all vertices lying in some u-v geodesic in g.if s is a set of vertices of g then i[s]is the union of all sets i[u,v]for u,v ? s. if i[s]=v(g) , then s is a geodetic set for g.the geodetic number g(g) is the minimum cardinality of geodetic set.the maximum cardinalit...
The purpose of this study was to describe the correlations between wheat grain yield (GY) and its components, under environmental stress and non-stress conditions, and recognition of the most effective yield components and their development stages in making interaction with the environment. Two generations of F3 and F4, produced from a cross between Oste-Gata (drought tolerant) and Massara-1 (s...
The thresholds for mathematical epidemiology models specify the critical conditions for an epidemic to grow or die out. The reproductive number can provide signi®cant insight into the transmission dynamics of a disease and can guide strategies to control its spread. We de®ne the mean number of contacts, the mean duration of infection, and the mean transmission probability appropriately for cert...
excessive vegetative growth may bring about improper pollination and consequently lead to reduced fruit set and misshapen fruits. paclobutrazol (pp333) reduces vegetative growth. on the other hand, balanced nutrient uptake at all developmental stages increases fruit quality and yield. an experiment was conducted with the aim of reducing vegetative growth and improving yield of strawberry, selva...
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