نتایج جستجو برای: age dependency
تعداد نتایج: 793417 فیلتر نتایج به سال:
Understanding the roles of age and size in the timing of first reproduction or flowering in plants has become a goal for those investigating the evolution of life cycle patterns in general. Here I review the studies that are helping to clarify these roles, and indicate some directions for future research.
As continuously studied by numerous papers, demographic factors are expected to be crucial components that affect the saving rates of countries. This paper investigates the correlation between the domestic saving rates and the old age dependency ratio, by examining the data set of 15 high income countries from 1975 to 2010, based on hypothesis that old age dependency ratio is negatively correla...
Pierre Toulon1; Micheline Berruyer2; Marie Brionne-François3; François Grand4; Dominique Lasne5; Caroline Telion6; Julien Arcizet2; Roberta Giacomello7; Neila De Pooter8 1Université Nice Sofia-Antipolis, CHU Pasteur, Service d’Hématologie Biologique, Nice, France; 2Laboratoire d’Hématologie, GH Est, Bron, France; 3Laboratoire d’Hématologie, CHU Côte de Nacre, Caen, France; 4Laboratoire d’Hémato...
We evaluated the correlates of baroreflex sensitivity (BRS) in healthy subjects. The study consisted of 117 healthy, normal-weight, nonsmoking male and female subjects aged 23-77 yr. Baroreflex control of heart rate was measured by using the phenylephrine bolus-injection technique. Frequency- and time-domain analysis of heart rate variability and an exercise test were performed. Plasma norepine...
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