The structural preferences of saturated and unsaturated species of phosphatidylglycerol in isolat ion and in mixed systems with unsaturated (HTT ohase) phosphatidylethanolamine have been investigated employing 31 . . . . P NMR techniques. I t is shown that equimolar (with respect to change) Ca2 + induces a " r ig id la t t i ce" (no motion) s i tuat ion in the phosphate region of the polar head...

The feeding of a diet rich in unsaturated fats to rabbits produced no significant alteration of the serum cholesterol level, while the feeding of a diet rich in saturated fats produced an elevation of the serum cholesterol without the development of experimental atherosclerosis. The addition of unsaturated fnts to a diet rich in cholesterol failed to prevent hypercholesterolemia and experimenta...

An iterative geostatistical inverse approach is developed to estimate conditional effective unsaturated hydraulic conductivity parameters, soil-water pressure head, and degree of saturation in heterogeneous vadose zones. This approach is similar to the classical cokriging technique, and it uses a linear estimator that depends on covariances and cross covariances of unsaturated hydraulic paramet...

In this study, we derive analytical solutions of the first two moments (mean and variance) of pressure head for one-dimensional steady state unsaturated flow in a randomly heterogeneous layered soil column under random boundary conditions. We first linearize the steady state unsaturated flow equations by Kirchhoff transformation and solve the moments of the transformed variable up to second ord...