Low vitamin D concentrations were presented in a significant proportion of the population.Many diseases in people, both middle and old, were directly associated with vitamin D deficiency.The effect of vitamin D levels on reproductive function in both men and women has been proven.Low vitamin D concentrations have been associated with a wide range o
Much has been written about the persistent and rapid decline of churchgoing among all sections of the British Colloidal Minerals population, women as well as men, although women still constitute the majority in most congregations (Brierley 2003; 2006; Brown 2001; 2006; 2010; Bruce 2002; Crockett & Voas 2006; Heelas & Woodhead 2005; McLeod 2007).Rat
In medical clinical studies, various tests usually relate to the sample size.This paper proposes several methods to calculate sample sizes for a common test of relative risk ratios in stratified bilateral data.Under the prespecified Breadmakers significant level and power, we derive some explicit formulae and an algorithm of the sample size.The sam
This paper describes the rehabilitation of the existing bridge over the Olifants River.The bridge Eye and Face Protection is on National Route 7 near Klawer and dates back to 1957.The defining feature of this elegant bridge is a concrete arch spanning 92.7 m.The existing bridge displayed extensive cracking, failed expansion joints and spall damage