Modified Bone Density Fractionation Method for Palaeodietary Studies

Fractionation Studies on Provitamin

In previous studies we found that a commercial cholesterol preparation obtained from the Wilson Laboratories had a high concentration of antirachitic provitamin. In the present studies we undertook to concentrate the provitamin fraction in cholesterol and to study its properties. 175 gm. of the commercial product, Cholesterol W, were dissolved in 1200 cc. of 10 per cent solution of sodium hydro...

Power Spectral Density Computation using Modified Welch Method

Spectral analysis is an important area in signal processing with wide range of application. A low complexity algorithm to compute the power spectral density (PSD) using the Welch method is presented in this paper. The Welch algorithm computes spectral power at the cost of high computational complexity. In order to reduce the complexity and hardware utilization pipelining FFT approach is used. I...

Cross Sectional Studies of Exercise and Bone Density

The association between mechanical stress and bone mass was first recorded by Galileo in 1683 who noted the relationship between body weight and bone size; but it was not until 1892 that Julius Wolff, a German anatomist realised that changes in the mechanical stresses applied to a bone influenced bone strength. Immobility or prolonged bed rest rapidly leads to hypercalcuria, negative calcium ba...

An efficient purification and fractionation of genomic DNA from soil by modified troughing method.

AIMS The aim of this study was to utilize a modified troughing method for purification of large genomic DNA obtained from microbiota in natural environment and for fractionation of genomic DNA into many size ranges that facilitates construction of metagenomic library. METHODS AND RESULTS Genomic DNA extracted from soil or termite gut was purified by the modified troughing method which utilize...

Tissue fractionation studies. 13. Analysis of mitochondrial fractions from rat liver by density-gradient centrifuging.