Results 211 to 220 of about 302,375 (263)

Fertilization

ACM SIGGRAPH 2012 Computer Animation Festival, 2012
Fertilization-the fusion of gametes to produce a new organism-is the culmination of a multitude of intricately regulated cellular processes. In Caenorhabditis elegans, fertilization is highly efficient. Sperm become fertilization competent after undergoing a maturation process during which they become motile, and the plasma membrane protein composition
Matthew R, Marcello, Gunasekaran, Singaravelu, Andrew, Singson   +2 more
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Early Fertility and Lifetime Fertility

Family Planning Perspectives, 1980
Teenage mothers are likely to have more children than those who postpone childbearing, but these differences are not as great as they used to be. There is also a pattern of convergence between black women and white women.
S R, Millman, G E, Hendershot
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Fertility desires and fertility outcomes

Journal of the Australian Population Association, 1991
Over the last 30 years Australian fertility rates have fallen more than could have been predicted from changes in the numbers of children desired by women when they first married. This paper charts changes in desired and completed fertility in Australia, matches originally desired fertility with that ultimately achieved and explores some factors which ...
M, Bracher, G, Santow
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Fertilizers

2011
Mineral fertilizers have played a pivotal role in the success of the agricultural production systems. Continued exponential growth in human population and increasing demand for biofuels point to ever-increasing demand for fertilizers. Despite the apparent success of the current agricultural production systems, overuse of fertilizers has caused severe ...
MORARI, FRANCESCO, VELLIDIS G, PAIGE G.
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Cryptorchidism and Fertility

Endocrinology and Metabolism Clinics of North America, 2015
Congenital cryptorchidism, that is, undescended testis, is one of the most common urogenital abnormalities observed in newborn boys. In addition to the congenital form, there is also acquired form of cryptorchidism. Fertility potential of patients with cryptorchidism has been evaluated by testicular histology and volume, semen quality, reproductive ...
Virtanen, HE, Toppari, J
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Future Fertility in High Fertility Countries

2014
Beginning 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, 1956
F 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, 1948
Streams 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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