Results 221 to 230 of about 216,209 (261)
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Future Fertility in High Fertility Countries
2014Beginning in 1960, a phenomenon occurred that John Caldwell named the ‘global fertility transition’ (Caldwell, 1997), in which fertility declines have become the general rule throughout the world, including in the majority of the less developed countries.
Fuchs, R., Goujon, A.
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Fertility and Research on Fertility in Japan
The Milbank Memorial Fund Quarterly, 1956F the trends in the fertility of the Japanese in the years from 1920 to 1950 are viewed in broad perspective, the downward movement is quite comprehensible to those who have studied the dynamics of fertility in Western countries.1 In 1920 and 1925 fertility was higher in agricultural than in industrial prefectures, higher in villages than in cities ...
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Fertility and Fertilization of Streams
Journal of the Fisheries Research Board of Canada, 1948Streams in a rather rocky and barren region in Nova Scotia were found to have almost no algae and fish except in relation to farm operations. Placing of bags of chemical fertilizer along the shore was followed in a year or two by increased quantities of algae and fish downstream, the maximum effect only 150 yards away. It is concluded that fertilizing
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Fertilization abnormalities in human in-vitro fertilization
Human Reproduction, 1992Fertilization abnormalities (premature chromosome condensation of spermatozoa (PCC), triploidy, haploidy) were analysed in order to determine their origin. PCC occurs in 9% of unfertilized oocytes and seems to be the consequence of a failure of oocyte activation, leading to the continuing presence of cytoplasmic chromosome-condensing factors, causing ...
Plachot, M., Crozet, N.
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Cancer and fertility: strategies to preserve fertility
Reproductive BioMedicine Online, 2011Fertility preservation is a key component of cancer management in young people. The Fourth Evian Annual Reproduction Workshop Meeting was held in April 2009 to discuss cancer and fertility in young adults. Specialists in oncology, assisted reproduction, embryology and clinical genetics presented published data and ongoing research on cancer and ...
K, Diedrich, B C J M, Fauser, P, Devroey
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Abstract Demographic transitions in contemporary human societies have profound impacts on our social and economic lives. Across the population sciences, there are abundant empirical observations, but few causal explanations, of fertility transition.
Lu, Y. +1 more
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Lu, Y. +1 more
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