In this study, we have introduced a biological dust control technique utilizing a naturally occurring soil microorganism, Sporosarcina pasteurii, which is capable of inducing calcium carbonate precipitation in the environment. To evaluate the dust suppressive potential of this microbial calcite, S. pasteurii was suspended in medium and applied to locally available sand. The treated soil samples...

An increasing number of countries and areas in the world suffer from either natural or anthropogenic dust, which results in a serious hazard with respect to the environment and to personal health and safety. This paper reviews and summarizes open literature involving the use of glycerin in dust control applications. Glycerin, a by-product from biodiesel manufacturing, has been evaluated for dus...

In order to ensure that the Sudbury Neutrino Observatory (SNO) is clean, some simple methods need to be developed for the cleanliness monitoring program. Two methods arc selected and examined. The two methods. X-ray fluorescence and optical counting, can be used for detecting and quantifying the amount of mine dust on flat surfaces. X-ray fluorescence is based on element detection, a method tha...

In this laboratory study, four drywall sanding tools were evaluated in terms of dust generation rates in the respirable and thoracic size classes. In a repeated measures study design, 16 participants performed simulated drywall finishing tasks with each of four tools: (1) ventilated sander, (2) pole sander, (3) block sander, and (4) wet sponge. Dependent variables of interest were thoracic and ...

Quartz is a human carcinogen and a causative agent of silicosis. Exposure levels often exceed exposure limits in the construction industry. The need for effective control measures is high, but the complex structure of the construction industry, the variability in sources of exposure and the frequent changes of worksite makes it difficult to implement even simple and potentially effective contro...

Dust is an environmental stressor and can become extensive in agricultural production systems. Thirty-six female, Spanish goats (average BW 21.1 kg, SEM = 1.31; age = 4 mo) were randomly assigned to simulated dust events or no dust, with or without tilmicosin phosphate treatment in a 2 x 2 factorial arrangement of treatments to determine effects on performance, rectal temperature, and leukocyte...

House dust mite sensitized asthmatics are advised to practice allergen avoidance. Charcoal pillows are used in Korea with unsubstantiated claims regarding their efficacy in alleviating asthma symptoms. We tested the effects of activated charcoal on breeding of house dust mites in culture. Twenty live adult house dust mites (Dermatophagoides pteronyssinus) were inoculated, 10 replicates, on cult...

BACKGROUND There is increasing interest in using chemicals measured in carpet dust as indicators of chemical exposures. However, investigators have rarely sampled dust repeatedly from the same households and therefore little is known about the variability of chemical levels that exist within and between households in dust samples. RESULTS We analyzed 9 polycyclic aromatic hydrocarbons, 6 poly...

OBJECTIVE We analyzed the influence of PM2.5 and house dust mite antigen Der p1 on the treatment of child asthma attack. PATIENTS AND METHODS A total of 96 children with asthma attack were included into the study. The patients were randomly divided into the PM2.5 group, the house dust mite antigen group, the synergistic group and the control group (n= 24 in each group). RESULTS The PM2.5 co...