MoS@ZnO Nanoheterostructures Prepared by Electrospark Erosion for Photocatalytic Applications.

MoS@ZnO nanoheterostructures were synthesized by electrospark erosion of zinc granules in a hydrogen peroxide solution and simultaneous addition of MoS nanostructured powder into the reaction zone. The morphology, size of the crystallites, as well as elemental and phase composition of the prepared structures, were examined using transmission electron microscopy and X-ray diffraction analysis. It was found that the synthesized products represent heterostructures containing MoS nanoparticles formed on ZnO nanoparticles.

[Age dynamics of cell reaction in the preoptic hypothalamic nucleus during melatonin administration with a special reference to blockade and activation of the kisspeptinergic system].

Kisspeptin activates neurocytes and astrocytes of the preoptic hypothalamic nucleus of 1-, 3- and 24-month-old male rats. Kisspeptin antagonist (P-234) depresses the neurocytes, but not the astrocytes of the preoptic nucleus. Melatonin at a dose of 100 mkg/100 g b.

The interaction of the thyroid gland, pineal gland and immune system in chicken.

The interaction of immunological system, thyroid and pineal gland was studied in 5-week old males of Gallus domesticus. Several morphometrical parameters in pineal and thyroid glands were measured after bird immunization with human red blood cells and/or treatment with melatonin or seduxen, melatonin receptor blocker. The peak of the thyroid activity was found on Day 7 after immunization.

A sophisticated lander for scientific exploration of Mars: scientific objectives and implementation of the Mars-96 Small Station.

A mission to Mars including two Small Stations, two Penetrators and an Orbiter was launched at Baikonur, Kazakhstan, on 16 November 1996. This was called the Mars-96 mission. The Small Stations were expected to land in September 1997 (Ls approximately 178 degrees), nominally to Amazonis-Arcadia region on locations (33 N, 169.

[The effect of Cardil (diltiazem) in chronic hypoxia on the cationic balance in the cardiovascular system and on blood viscosity in rats].

Experiments on albino rats showed that injection of cardil (diltiazem) (10.5 mg/kg) daily for 7 days in chronic pressure-chamber hypoxia promoted the correction of hypoxia-induced changes in blood viscosity and cation balance in the erythrocytes, blood plasma, tissues of the abdominal aorta and heart (except for the myocardial Ca2+ content) in decrease of the passive and active Na+ and K+ transport through the erythrocyte membrane, increase of free energy (dFi > 0) of the erythrocyte--plasma--vascular wall system which was reduced in rats kept for 14 days under conditions of hypoxia in a pressure chamber. Chronic hypoxia reduced the anticalcium effect of of cardil (diltiazem) in the myocardial cells and its influence on the increase of the transparietal potential difference in the abdominal aorta.