BACKGROUND Dietary calcium and vitamin D are essential for bone development. Apart from diet, physical activity may potentially improve and sustain bone health. OBJECTIVE To investigate the relationship between the dietary intake of calcium and vitamin D, physical activity, and bone mineral content (BMC) in 13-year-old Malaysian adolescents. DESIGN Cross-sectional. SETTING Selected public...

Quantitation of cardiac output by the Stewart-Hamilton method will have extended usefulness if the accuracy of measuring the concentration of Evans blue dye in whole blood is established. Cardiac outputs by this method have been compared in dogs with outputs by the rotameter and the Tick method. The constant-flow photometer (Friedlich) was used initially, but certain difficulties in its use led...

In this work we analyze the feasibility of detecting equilibrium states and measuring, simultaneously, saturated liquid densities and equilibrium pressures at fixed temperature, of ”Type V” binary mixtures in state regions where both VLE and LLE are present. The employed technique is the Synthetic Indirect PvT Method through a single vibrating tube densitometer setup. The detection of phase equ...

Eight patients, five male and three female, ages 48 to 69, with documented healed myocardial infarction, were studied. Six were habitual smokers and two were nonsmokers. Each patient served as his own control. Some of the patients were studied in the fasting state and some after eating. The order of smoking and nonsmoking studies was randomly selected. Each patient smoked two standard-sized fil...

Although single-photon absorptiometry (SPA) has been the predominant tool used to assess bone mineral density (BMD) in the forearm, the development of dual-energy x-ray absorptiometry (DEXA) provides the benefits of greater source stability, reduced scanning time, and improved image resolution compared to SPA. In the present study we used the DEXA bone densitometer (Hologic, Inc., Waltham, MA) ...