Gaseous Contaminant Distribution in the Breathing Zone

Gaseous contaminant distribution in the breathing zone.

Conventionally, the "breathing zone" is defined as the zone within a 0.3 m (or 10 inches) radius of a worker's nose and mouth, and it has been generally assumed that a contaminant in the breathing zone is homogeneous and its concentration is equivalent to the concentration inhaled by the worker. However, several studies have mentioned that the concentration is not uniform in the breathing zone ...

Probabilistic Contaminant Source Identification in Water Distribution Infrastructure Systems

Large water distribution systems can be highly vulnerable to penetration of contaminant factors caused by different means including deliberate contamination injections. As contaminants quickly spread into a water distribution network, rapid characterization of the pollution source has a high measure of importance for early warning assessment and disaster management. In this paper, a methodology...

Vapor Intrusion Estimation Tool for Unsaturated-Zone Contaminant Sources

probabilistic contaminant source identification in water distribution infrastructure systems

large water distribution systems can be highly vulnerable to penetration of contaminant factors caused by different means including deliberate contamination injections. as contaminants quickly spread into a water distribution network, rapid characterization of the pollution source has a high measure of importance for early warning assessment and disaster management. in this paper, a methodology...

Real - time Contaminant Source Characterization in Water Distribution Systems

LIU, LI. Real-time Contaminant Source Characterization in Water Distribution Systems. (Under the direction of S. Ranji Ranjithan and G. Mahinthakumar.) Accidental/intentional contamination continues to be a major concern for the security management in water distribution systems. Once a contaminant has been initially detected, an effective algorithm is required to recover the characteristics of ...