Mantel N, McPherson K, Peto J, Smith PG: Design and analysis of randomized clinical trials requiring prolonged observation of each patient.

purification of drinking and industrial water required usage of high molecular weight polymer to cause flocculation process of dispersed suspension of contaminants. polyelectrolytes, including ionic polyacrylamide are especially appropriate for these purposes, because in this case the suspension stability can be controlled by both steric and electrostatic forces. thus the influence of solution ...

the suspension system of a vehicle is one of the most important parts which is involved in the process of vehicle designing. when a vehicle suspension system is designed, the evaluation of its performance against the road disturbances such as shocks and bumps are very important. the most commonly used systems consist of four hydraulic jacks with mobility in vertical line with low speed and low ...

The differential solubility of macromolecules governs their crystallization and is thus of great importance to crystallography (Blundell and Johnson, 1976; McPherson, 1982, 1985a,b, 1990; Feher and Kam, 1985; Giegé and Mokol, 1989; Ollis and White, 1990; Giegé and Ducruix, 1992; Giegé et al., 1994). In addition, precipitation is widely applied as a fractionation method for the purification of m...