The changes in diatom assemblages along an urban-to-rural gradient were characterized to assess the ecological status of the Sai Gon River, Vietnam. Diatoms and physico-chemical variables were measured at 10 stations during dry and rainy season. One-way ANOVA showed that diatom metrics and physicochemical variables were significantly different (p < 0.05) between the upper course sites and both ...

background: volatile organic compounds (vocs), including carcinogens and toxic compounds, are produced in petrochemical industries. we undertook this study in order to study workers’ respiratory exposure to different voc concentrations and compare the results with the urinary levels of its metabolites and study the correlation between them in petrochemical industries. materials and methods: exp...

The management of natural environments passes from the possibility to know environmental features and their evolution in time. Generally quality assessment is based on chemistry or microbiology, and physical values, to justify laws and sanctions. The big problem of these precise measures, however, is in the necessity they have to be recorded in a more or less continuous monitoring. Punctual mea...

4 Wagner JC. Asbestos dust exposure and malignancy. Proceedings of 14th congress on occupational health. Madrid: 1963. 5 Hourihane DO'B, Lessof L, Richardson PC. Hyaline and calcified pleural plaques as an index of exposure to asbestos. A study of radiological and pathological features of 100 cases with the consideration of epidemiology. Biological monitoring of MDA Sir,-4,4'-methylenedianiline...

The changes in diatom assemblages along an urban-to-rural gradient were characterized to assess the ecological status of the Sai Gon River, Vietnam. Diatoms and physico-chemical variables were measured at 10 stations during dry and rainy season. One-way ANOVA showed that diatom metrics and physicochemical variables were significantly different (p < 0.05) between the upper course sites and both ...