Hygienic evaluation of new laser technology units

The study revealed that the levels of lazer irradiation diffusion in working places, in case with the "Biryuza" technological equipment, were lower MAC. The other occupational factors, violating the accepted hygienic norms, were connected with improper hygienic control measures at the stage of equipment processing and usage. A set of labour conditions improvement measures was proposed.     

Hygienic assessment of components of smoking fume

Analyzing the chemical composition of smoking fume has indicated that maximum allowable concentrations (MACs) have been established for 50 of 400 well-known compounds, working area MACs were standardized for 42 of the 50 compounds, the maximum single and daily average concentrations were standardized for 34 and 30 compounds, respectively. All standards were established for 25 compounds. Despite the fact that there a large list of MACs, it is difficult to calculate the objective hygienic risk of smoking smoke since 32 compounds are contained in traces. Hygienic assessment of fume discharges from the smoking chamber by taking into account their mass and MACs demonstrated that phenols, carbonyl compounds, acids, and benz(a)pyrene which should be used to work out the unified hygienic standard are of the greatest importance.     

90份染发剂样品卫生毒理学检验结果分析

目的了解进口和国产染发剂的卫生安全性。方法按《化妆品卫生规范》(2002年版)对送检染发剂样品进行急性眼刺激试验、皮肤变态反应试验、鼠伤寒沙门菌回复突变试验等检测。结果共检测染发剂样品90份,不合格样品26份,不合格率为28.89%。其中急性眼刺激性试验不合格率为27.78%;皮肤变态反应试验不合格率为4.44%;鼠伤寒沙门菌回复突变试验呈致突变阳性占5.56%;体外哺乳动物细胞染色体畸变试验呈致突变阳性占5.56%。结论该次检测的部分染发剂具有潜在不安全性。     

Hygienic assessment of students' nutrition and health

A randomized study of lifestyle, quality of life, and the degree of depression was carried out in 399 Novokuznetsk high-school students (219 young men and 180 young women). Daily dietary pattern and eating behavior were studied in the students experiencing the highest psychoemotional stress caused by their adjustment to a new behavioral stereotype at higher school. Varying depression was observed in 16.5% of the students. The findings suggest the students' poor awareness of healthy lifestyle; however, 70.5% regarded their life as satisfactory. The students' diets characterized by the low levels of essential nutrients may diminish the body's adaptive abilities and provoke the development of various abnormalities. Eating behavioral disorders were observed in 21.5% of the respondents. Correlation analysis showed that the higher level of depression in young males, the more pronounced emotional eating behavioral disorders are (r = 0.31; p < or = 0.05). Such a correlation was not detected in young females. The higher degree of depression was found to affect the students' life quality (r = -0.37; p < or = 0.05). The study has provided a municipal special program "Health and Education" for 2007-2011, which will make it possible to carry out among students a regional policy aimed at popularizing the principles of healthy lifestyle, forming proper dietary habits and mechanisms of optimal behavioral models and their introduction.