[Interhemispheral interaction of brain biopotentials in neurosensory deafness due to occupational factors].

The authors studied value and trends of changes in interhemispheral coefficients of biorhythms coherence in brain cortex under exposure to occupational factors complex in engine crew workers. The authors followed character and dynamics of those changes in railway workers with long length of service, with or without occupational neurosensory deafness.

[Features of microcirculatory disorders in acute and recurrent hemorrhagic vasculitis (Schönlein-Henoch disease)]. / Osobennosti mikrotsirkuliatornykh narushenii pri ostrom i retsidiviruiushchem gemorragicheskom vaskulite (bolezni Shenleina-Genokha).

AIM: To study microcirculatory disturbances in acute and chronic hemorrhagic vasculitis (HV). MATERIAL AND METHODS: The examination of 44 HV patients included clinical and immunological examinations, conjunctival biomicroscopy, tests for blood viscosity, aggregation of erythrocytes, coagulation parameters. In 8 patients morphological examination of skin microvessels was made (light microscopy and electron microscopy). RESULTS: Changes in microcirculation of patients with acute HV were characterized by increased IgA and red cell aggregation, tendency to hypercoagulation. Morphologically, there was high permeability of the microvessels wall. In patients with chronic HV laboratory parameters normalized except elevated level of circulating immune complexes and red cell aggregation. Morphological picture of microcirculatory disturbances in patients with chronic HV was characterized by productive vasculitis. CONCLUSION: In HV patients microcirculatory disorders caused by immunologic mechanisms are realized through increased permeability of microvessel wall, high aggregation of erythrocytes in microvessels and hypercoagulation in acute HV. In patients with chronic HV productive vasculitis and high aggregation of erythrocytes are registered.

[Effect of plant protective chemicals on the environment and human health]. / Vliianie khimicheskikh sredstv zashchity rastenii na sredu obitaniia i zdorov'e naseleniia.

The developed and promoted package of ecological and hygienic measures and the specific programme introduced by the State Sanitary-and-Epidemiological Surveillance Committee have yielded positive results in sanitizing the Yakhroma flood land, approaches to rationally managing the medical and sanitary situation. The implemented measures are a preparatory stage of introduction of the assessment of a health risk in hygienic monitoring.

[Hygienic aspects of the impact of solid waste disposal sites on the habitat]. / Gigienicheskie aspekty vliianiia poligona tverdykh bytovykh otkhodov na sredu obitaniia.

The "Dmitrovsky" solid garbage (SG) ground is one of the largest enterprises of this kind in the Moscow Region. A total of 200,000-750,000 tons of solid garbage (91%) and industrial waste products (9%) annually come to the ground. A total of 5,500,000 tons of garbage and waste products have been accumulated since it was put into operation. From the accumulated SG deposits, iron, manganese, beryllium, titanium, barium, boron, petroleum products enter the surface and underground waters, methane, carbon oxide, ammonia, toluene, xylene, hydrogen sulfide, cresol, phenol come into the atmospheric air; the compounds of zinc, lead, cadmium, copper, nickel, magnesium, and cobalt do into the soil. The studies conducted in 1997-2002 make it possible to establish that the ground has a negative impact on the environment and to evaluate the efficiency of nature-conservation and hygienic measures, and to improve the technological process of SG utilization.