[Milk raw materials from retrovirus infected cows: questions of safety and quality of produced products].

The comparative evaluation of protein biological value of curd manufactured by the traditional technology and using microbial transglutaminase has been carried out. The biological experiment was conducted at Wistar laboratory rats fed by the analyzed curd samples as the protein (in the amount of 10% of the total calorie content of the diet) composed of semisynthetic diet. Within 22 days the individual rates of feed eating and the rat's body weight gain have been analyzed.

Formation of metallic magnetic clusters in a Kondo-lattice metal: evidence from an optical study.

Magnetic materials are usually divided into two classes: those with localised magnetic moments, and those with itinerant charge carriers. We present a comprehensive experimental (spectroscopic ellipsomerty) and theoretical study to demonstrate that these two types of magnetism do not only coexist but complement each other in the Kondo-lattice metal, Tb(2)PdSi(3). In this material the itinerant charge carriers interact with large localised magnetic moments of Tb(4f) states, forming complex magnetic lattices at low temperatures, which we associate with self-organisation of magnetic clusters.

SiC/C nanocomposites with inverse opal structure.

The synthesis, morphology, structural and optical characteristics of SiC/C nanocomposites with an inverse opal lattice have been investigated. The samples were prepared by thermochemical treatment of opal matrices filled with carbon compounds which was followed by silicon dioxide dissolution. The samples were studied by electron microscopy, x-ray diffraction, photoluminescence, IR and Raman scattering spectroscopy.

[Hygienic rationale for maximum permissible concentration of acetopropyl alcohol in atmospheric air].

Toxic properties of acetopropyl alcohol were studied. Symptoms of CNS damages predominated in toxicodynamics. A maximal single concentration is 0.