[Risk and features of occupational diseases in nonferrous metallurgy workers of Kolsky Transpolar area].

The study covered data on 977 cases of occupational diseases in 615 workers of nonferrous metallurgy in Kolsky Transpolar area. Findings are high risk of occupational diseases in workers engaged into electrolysis production of aluminium, all nickel reprocessing and pyrometallic copper reprocessing (GR 7.02-10.0). Electrolysis operators and anode operators of aluminium production are more prone to occupational diseases, with bone and muscular disorders (46.8%) prevalent in the morbidity structure. Respiratory diseases are more prevalent (68.2-100%) in the occupational morbidity structure of copper-nickelindustry workers. Conclusion is made on mandatory improvement of the work conditions and more effective individual protective means against occupational hazards in workers of nonferrous metallurgy in Kolsky Transpolar area.

[Ultrasound examination in diagnosis and classification of occupational myofibrosis (lecture)].

Based on comparative analysis of contemporary clinical and instrumental investigations, the authors justify advantage of ultrasound examination in diagnosis of occupational myofibrosis. Results of ultrasound application helped to specify a classification of occupational myofibrosis according to the disease severity, that considerably increases efficiency of examining connection between the disease and occupation.

[North-Western Research Center for Hygiene and Public Health. 90th anniversary: results and prospects of scientific work].

The authors represented results on major research directions followed by the Institute since its foundation, the prospects of their development in hygiene and industrial medicine.

[Evaluating occupational risk in night shift work schedule].

The authors analyzed and summarized risk values of acute and chronic health disorders in night shift workers. Average annual risk increments for various chronic diseases in night shift workers were calculated. Based on these data, the authors conclude on hazard degree of night shift work.

[Physiological and hygienic grounding 8-hour and 12-hour shifts at process production].

On workplaces of an oil refining factory for an estimation of 8-hour and 12-hour shifts the criterion of tiresomeness of work - speed of decrease in working capacity on hours on hours of the working day. Conditions of the industrial environment, physiological intensity of work (density and rate of labour actions), dynamics of parameters of a functional state of an organism of workers, data about symptoms of acute and chronic weariness were analyzed. It is supposed, that at absence of harmful factors of the industrial environment the opportunity of lengthening of a work day till 12-hour is defined by physiological intensity of work - a combination of duration of the working day and week with density and rate of labour actions.

[The importance of behavioral risk factors for bronchopulmonary pathology in copper-nickel industry workers].

The effect of harmful behavioral factors on the development of chronic bronchopulmonary diseases (CBPD) was investigated in 1811 copper-nickel industry workers. The study showed that the most pronounced negative impact on respiratory system was caused by smoking. It manifested itself both by a decrease in the number of healthy individuals and by an increased risk for developing chronic bronchitis and chronic obstructive pulmonary disease. Excessive alcohol consumption and obesity did not significantly affect the development of CBPD. However, when combined with smoking, they potentiate its negative pneumotropic action. It is concluded that early detection and management of modifiable non-productive risk factors for CBPD is an effective way to improve the respiratory health of this category of workers.

[Medical and biological assessment of preventive drinks use among workers exposed to adverse working conditions].

Studies on the assessment of the effect of treatment-and-preventive drinks, i.e. "Leovit" dietary kissels, and "Zosterin-Ultra" biologically active food additive, on copper, nickel and cobalt ion concentrations in urine and on lead blood concentrations in workers employed at the "Kola Mining Company" limited liability joint-stock company and exposed to long-term metal aerosol effects, were carried out. Dependence of ion concentrations of these metals in biological media on exposure duration was reported. The study findings reveal the advisability of use of the above-mentioned food additives, having detoxication properties, while carrying out preventive measures among workers exposed to heavy metals.

[Problem of electromagnetic safety in contemporary scientific progress].

The article covers problems of human electromagnetic safety in intensive development of new generation radio-frequency equipment with complicated physical and technical properties. The authors suggest national program on electromagnetic safety.

[Influence of environmental and industrial immunotoxic hazards on clinical course of HIV-infection].

The authors assessed peculiarities of effects caused by the most prevalent environmental pollutants (polychlorinated biphenyls, polycyclic aromatic hydrocarbons, lead, mercury) extensively accumulated in human body on clinical course of HIV-infection.

[Work schedule of electric welders in heating microclimate].

The authors present results of specified hygienically justified timing regulations for setting the variants of work and rest modes within electric welders shift, who work in various postures with variable visual strain while welding in heating microclimate.

[Clinical features of acute carbon monoxide occupational poisonings complicated by thermochemical damage to upper respiratory tract].

Findings are that thermochemical damage to upper respiratory tract makes course of acute occupational and household carbon monoxide poisonings significantly more severe. Inpatient treatment duration appeared to correspond with degree of respiratory tract involvement. Coma depth and duration, artificial lungs ventilation terms, complications occurrence and severity of inhalation injury appeared to be directly dependent.

[Occupational risk and its prophylaxis for female workers engaged in radio-electronic instrument industry]. / Professional'nyi riski ego profilaktika u zhenshchin, zaniatykh v radioélektronnom priborostroenii.

Hygienic evaluation of work conditions and health state of women engaged into radioelectronic instrument-making industry helped to define occupational hazards determining occupational risk that includes criteria for reproductive disorders.

[Hygienic evaluation of work condition and health status of female telephone operators in information services]. / Gigienicheskaia otsenka uslovii truda i sostoianiia zdorov'ia zhenshchin-telefonistok spravochno-informatsionnoi sluzhby.

The authors conducted hygienic evaluation of work conditions for female telephone operators of inquiry office. The article deals with characteristics of health state according to periodic medical examinations and with evaluation of the workers' reproductivity according to poll data. The analysis covered influence of sensory and emotional load on health state of female telephone operators.

[Risk of health disorders among women working with precision sterile technologies]. / Risk narushenii zdorov'ia u zhenshchin, rabotaiushchikh s pretsizionno-steril'nymi tekhnologiiami.

Results of hygienic, clinical, epidemiologic research helped to identify occupational risk factors for female workers engaged into microelectronic devices construction. The studies revealed occupational diseases and reproductive disorders in the females. The higher occupational risk was set for workers subjected to combined effects of complex low intensity factors, intensive work under exposure to chemical hazards.

[Occupational hygiene and health state of workers engaged into instrument-producing industry]. / Gigiena truda i sostoianie zdorov'ia rabotaiushchikh v priborostroenii.

The authors present data on hygienic evaluation of work conditions in industries associated with production of new composition materials of crystallic and amorphous structure. The article covers results of toxicologic experiments and evaluation of workers' health through medical examination results and transitory disablement morbidity. Research justify maximal allowable concentrations of composition materials and sanative recommendations for optimal work conditions. The authors also tackle evaluation of the measures efficiency in industry development.

[Industrial hygiene problems in the manufacture of polymetal materials]. / Voprosy gigieny truda v proizvodstvakh polimetallicheskikh kompozitsii.

The article deals with results of hygienic and toxicologic research in production of some polymetallic compositions: electric vacuum glass, glass enamel, crystallic cement, eutectic solder and permanent magnets.

[Basic factors in the stability of RNA-duplexes. The contribution of dehydration]. / Osnovnye faktory stabil'nosti RNK-dupleksov. Vklad degidratsii.

The enthalpy effect of hydrate envelope deformation was first taken into consideration for estimating the influence of aqueous medium on the stability of RNA duplexes. In addition two rarely used parameters (macroscopic value of dielectric water permeability and entropy effect of dehydration) were employed. According to the energy model described the contribution of the free energy of dehydration to the RNA duplexes stability is significant even in comparison with that of the interstrand stacking.