Abstract The health risk of students’ exposure to some potentially toxic metals in classroom dusts Southeast, Nigeria was assessed. Dust particles were collected from classrooms public high schools and digested with aqua regia before analysis for selected by atomic absorption spectrophotometry. geoaccumulation index, contamination factor the pollution load index assessed metal concentrations du...

By orbit-limited motion (OLM) theory and the kinetic model, currents carried by electronsand ions on the dust grain are obtained and the effects of temperature and drift velocity of ions on thedust grain electrical potential are considered. The calculations were performed for finding the role of densities of dust grains and ions on the dust grain electrical potential which is the ma...

The technology of road construction is subjected to changes to cope up with changing vehicular pattern, construction materials and sub grade condition. Majority of the pavement failures could be attributed to the presence of poor sub grade conditions and expansive sub grade is one such problematic situation. Marine soils, because of the specific physico-chemical makeup are subjected to volume c...

In this paper, we propose a new sensor for the detection and analysis of dusts (seen as powders and fibers) in indoor environments, especially designed for applications in the field of Cultural Heritage or in other contexts where the presence of dust requires special care (surgery, clean rooms, etc.). The presented system relies on image processing techniques (enhancement, noise reduction, segm...

The conterminous United States contains an extensive and generally well-studied record of Last Glacial loess. The loess occurs in diverse physiographic provinces, and under a wide range of climatic and ecological conditions. Both glacial and non-glacial loess sources are present, and many properties of the loess vary systematically with distance from loess sources. United States’ midcontinent L...