نتایج جستجو برای: secondary sex ratio

تعداد نتایج: 957623  

Journal: :Ornis Hungarica 2012

Journal: :Proceedings of the National Academy of Sciences 1983

Journal: :American Anthropologist 1924

Journal: :Annales de Zootechnie 1982

Journal: :Journal of Medical Genetics 1979

سپیدنامه, بهروز, قیصریان, اسحاق,

Introduction and purpose: Aging population is a new phenomenon in Iran which is due to several reasons such as decrease in birth rate, increase in medical advances, health, education and prolonged life expectancy. The current study aim to investigate economic and social aspects of elderly population such as median age of population, dependency ratio, sex ratio, marital status, litearcy and empl...

2017
Clara Amalie Gade Timmermann Anna L Choi Maria Skaalum Petersen Flemming Nielsen Esben Budtz-Jørgensen Pál Weihe Philippe Grandjean

This study was undertaken to assess the potential impact of maternal exposures to polychlorinated biphenyl (PCB), dichlorodiphenyl dichloroethylene (DDE) and methylmercury on the secondary sex ratios (the ratio of male to female live births) over a span of 23 years. The study includes prospective data from three Faroese birth cohorts, with a total of 2,152 healthy mother-child dyads recruited b...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید