Heterogeneous chemistry on mineral dust particles causes significant reductions in important tropospheric trace gases such as O3, OH, and HNO3 in dust-dominated regions such as the North African Tropical Atlantic region. We analyze the spatial and temporal modes of dust-induced heterogeneous ozone removal (∆HO3) using empirical orthogonal functions (EOFs) and principal components analysis. We u...

To reduce maintenance workers’ dose rate caused by activated dust adhering to the ITER blanket remote handling system (BRHS), dust must be removed from BRHS surfaces. Dust that adheres to the top surface of the BRHS rail from cyclic loading of the vehicle manipulator is considered to be the most difficult dust to remove. Dust removal experiments were conducted to simulate the materials, conditi...

Generally, an effective ventilation system is essential to reduce coal dust disaster. However, with the implementation of carbon tax and increase of energy and operating costs, it is urgent to design a cost-effective ventilation and dust control system. In this paper, a real driving face in an excavation laneway of coal mine in China was taken as the physical model, and the temporospatial chara...

[1] Size-segregated budgets of soil dust aerosols in Asia for spring 2001 during ACEAsia were investigated using the NARCM model [Gong et al., 2003b]. Simulated mass size distributions of dust deposition showed a similar size distribution to the dust emission fluxes over the source regions and a decreased peak corresponding to a 1–3 mm diameter range over downwind regions. The simulations sugge...

Asphalt hot regeneration pavement maintenance vehicle is a type of in situ heating waste asphalt special equipment for mix and aged asphalt. When mixture heated melted, lot organic fumes are typically produced, along with dust from the mixing process. Because complex composition exhaust gases produced by vehicles, it can be difficult to purify remove them using single method. In order effective...

[1] Calculations from a microphysics model are shown which indicate the factors that control droplet nucleation scavenging of hydrophilic mineral dust particles over a large range of conditions including the size, chemical composition, and number density of particles in both cumulus and stratus clouds. We focus specifically on the activation threshold radius (ATR) for droplet nucleation which d...

Given the rate at which humans shed their skin (desquamation), skin flakes that contain squalene and cholesterol are anticipated to be major constituents of indoor dust. These compounds have been detected in more than 97% of the dust samples collected from 500 bedrooms and 151 daycare centers of young children living in Odense, Denmark. The mass fractions of squalene in dust were approximately ...

Dust in pig con"nement buildings may create negative health e!ects on humans as well as on the animals. Measures to reduce the dust concentration in the air are therefore urgent. The mass balance of dust as well as the e$ciency of di!erent dust-reducing measures have been investigated and analysed. The investigations have shown that the generation of dust is a!ected by activity, number of pigs ...