Comparison of Quadriceps and Hamstring Muscle Activity during an Isometric Squat between Strength-Matched Men and Women. The primary purpose of this investigation was to determine whether strength-matched men and women exhibit a different magnitude and ratio of leg muscle act... S Nimphius,J Mcbrid...
While many explanations for the decline have been offered, almost without exception these have not addressed the causes of the nearly continuous fall observed since 1901. Several possible long-term changes are investigated in this note. The author argues that India's declining sex ratio is ...
Hugo Friedhofer wrote one of his wonderful scores for the picture and it's a major highlight too.This Spanish DVD presents both an English and Spanish soundtrack (and optional Spanish subtitles). The good news is that it's presented in it's original widescreen (2:55 to 1) CinemaScope r...
Postmating reproductive isolation and modification of the 'sex ratio' trait in Drosophila subobscura induced by the sex chromosome gene arrangement A2+3+5+7. Drosophila subobscura males were trapped in Tunis, and mated to different lab strains. The offspring from 15% of these wild Tunisian males...
The sex ratio of 1.06:1, the ratio of male to female births, has declined over the past decades. Recent reports from a number of industrialized countries i... DL Davis,MB Gottlieb,JR Stampnitzky - 《Jama the Journal of the American Medical Association》 被引量: 1050发表: 1998年 The ea...
Before 1990, sex ratios at birth were consistently nearly one point lower (104) for the three major Asian groups in Britain compared with mothers born in Western countries. This is inconsistent with previous suggestions that Asian populations have a higher "natural" sex ratio at birth. In the ...
Average family size and sex ratio are studied for the parental and present generations. The effect of the proportion of males in a family on the size of the present generation is analyzed. Data were obtained in 1979 from 861 secondary school students in a residential metropolitan area of Japan...
Sex Ratio of Infant Mortality: Trends of Change 来自 国家科技图书文献中心 喜欢 0 阅读量: 31 作者:M Abramowicz,H L Barnett 摘要: The excess of boys in infant deaths has increased in the 20th century as infant death rates have declined. This inverse relationship is demonstrable in New York ...
Evolutionary models of sex ratio adjustment applied to mammals have ignored that females may gain indirect genetic benefits from their mates. The different... KH Red,Y Holand,A Mysterud,... - 《Proceedings of the Royal Society B Biological Sciences》 被引量: 0发表: 2013年 Density-dependent ...
The highly masculine sex ratio in India has increased substantially in the twentieth century, in contrast to most other countries in the world. Competing arguments alternatively posit underenumeration, highly masculine sex ratios at birth, or excess female mortality throughout the life course as the ...