نتایج جستجو برای: fertility motivations
تعداد نتایج: 64742 فیلتر نتایج به سال:
background: phenol is an estrogenic and toxic compound and people are widely exposed to it, in different ways. objectives: the aim of this study was to determine the negative effects of phenol on the fertility of male mice, by investigating sperm parameters including viability, motility, fertility rates and daily sperm production (dsp). methods: a total of 106 adult nih mice were divided int...
reports indicate that one of the causes of harmful to the genital system, especially the testes is stress. result of damage to testicular quality certainly will affect the quality of sperm fertility. stress could be created secondarily after some pathological conditions such as neurological diseases or environmental factors. one of the causes of stress could be scary voices, such as cat voice f...
Cryopreservation of eggs or ovarian tissue to preserve fertility for patients with cancer has been studied since 1994 with R G Gosden’s paper describing restoration of fertility in oophorectomised sheep, and for decades previously by others in smaller mammals. Clinically this approach has shown great success. Many healthy children have been born from eggs cryopreserved with the Kuwayama egg vit...
Elementary Classes Motivations and Directions John T. Baldwin Why AEC? Categoricity and Complex Exponentiation Excellence– Generalized Amalgamation Eventual Categoricity Core Mathematics again Abstract Elementary Classes Motivations and Directions
the main objectives of a profitable organization are its survival, excellence and finally its prosperity. the organizational prosperity depends on performance based on dimensions called abilities and motivations of the organizations. therefore, the organizations need to have contingency integration between those two dimensions. in the past two decades, we have seen different views and models de...
BACKGROUND While there has been a considerable amount of research on the association between women’s education and fertility rates, few of these studies have examined the pattern of fertility differentials over the course of the fertility transition. As a country that has experienced a rapid decline in fertility and marked improvements in women’s educational attainment over the last several dec...
Correlations in family size across generations could have a major influence on human population size in the future. Empirical studies have shown that the associations between the fertility of parents and the fertility of children are substantial and growing over time. Despite their potential long-term consequences, intergenerational fertility correlations have largely been ignored by researcher...
Introduction Fertility is a very complex trait, difficult to define, to record and to evaluate all the factors that influence fertility. Fertility is strongly influenced by environmental effects and in part by genetics, the male for fertilization and the female for conception. In general, the fertility trait is hereditary but only to a small degree. There does however exist sufficient genetic v...
Although a considerable amount of attention has examined potential positive and negative consequences of video game play in children, relatively little research has examined children’s motivations for using games. The current study hopes to address this gap in the literature by examining children’s motivations for video game play in a large sample of youth (n = 1254). Results indicated that vid...
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