Development of an improved image processing based visibility model

Article Abstract:

The development of an improved image processing based visibility model and its application to regional haze conditions are discussed. Sky color and its intensity were theoretically calculated and related by photographic data. Comparison against radiometer measurements and point by point comparison of actual photographs and synthetic images were used to validate the model. The utility of the model for providing visibiity to pollutant loadings was demonstrated.

Models, Environmental aspects, Image processing, Visibility

---

Effect of surfactant layers on the size changes of aerosol particles as a function of relative humidity

Article Abstract:

The influence of the surfactant layers Tween 80, dodecyl sulfate, sorbitan ester and azelaic acid on the change in mass of coated aerosol particles as a function of realtive humidity was investigated. The results showed that Tween 80 lowered the relative humidity by as much as 75%, depending on layer thickness. A surfactant coating on carbon black particles increased the hygroscopicity of the particles.

Aerosols, Particles, Particulate matter, Surface active agents, Humidity

---

Evaluation of elemental cadmium as a marker for environmental tobacco smoke

Article Abstract:

Elemental cadmium (Cd) exhibits several outstanding properties that makes it an ideal marker for environmental tobacco smoke (ETS). Elevated Cd concentrations were observed in smoking areas compared with less than 2 ng/m3 in ETS-free indoor air. Cadmium concentrations also exhibited minimal variation across different unburnt tobacco products. Cd is also a significant marker for respiratory ETS.

Evaluation, Cadmium, Passive smoking

Similar abstracts:

• Abstracts: Many gene changes found in cancer. A second breast cancer susceptibility gene found. Possible function found for breast cancer genes
• Abstracts: Shock forges piece of Jovian interior. A fickle sun could be altering earth's climate after all. Volcanologists ponder a spate of deaths in the line of duty
• Abstracts: Are wildlife corridors the right path? Press coverage: leaving out the big picture. The high cost of biodiversity
• Abstracts: Mountains of data. Building on research. Group therapy
• Abstracts: Nothing either good or bad: industrial espionage and technology transfer. Measurement and evaluation of technology transfer: review of technology transfer mechanisms and indicators

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.