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Physical Sciences and Mathematics Commons™
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Articles 1 - 10 of 10
Full-Text Articles in Physical Sciences and Mathematics
Use Of High-Energy Radiation For Degradation Of Environmental Pollutants, Robert D. Guthrie, Manjiri Patwardhan
Use Of High-Energy Radiation For Degradation Of Environmental Pollutants, Robert D. Guthrie, Manjiri Patwardhan
KWRRI Research Reports
The purpose of this project was to explore the advantages and/or limitations of high-energy radiation treatment as a method for degrading organic pollutants, particularly aryl halides, in an aqueous medium. We have done analyses of 60Co-irradiated samples and kinetic studies using pulsed electron beams. For aryl halides containing no more than two fused rings, the main products detected are those of simple halogen replacement by hydrogen, although the amount of aryl halide destroyed was always greater than the total amount of products detected. To accomplish halogen replacement by H, the reaction solvent may not be pure water but must …
Mechanical Backup Systems For Electronic Environmental Controllers, Richard S. Gates, Douglas G. Overhults, Larry W. Turner
Mechanical Backup Systems For Electronic Environmental Controllers, Richard S. Gates, Douglas G. Overhults, Larry W. Turner
Biosystems and Agricultural Engineering Faculty Publications
A series of mechanical backup systems for electronic environmental controllers is presented for a typical finishing swine barn and a typical tunnel ventilated broiler house. The systems consist of mechanical thermostats and timers used in parallel with the electronic controller, designed to ensure animal survival in the event of controller or related hardware failure. For swine housing, three distinct mechanical backup functions are identified; for broiler housing, four distinct mechanical backup functions are identified. Schematic diagrams of the mechanical backup functions are provided and their implementation is described.
A Survey Of Electronic Environmental Controllers, Richard S. Gates, Douglas G. Overhults, Larry W. Turner
A Survey Of Electronic Environmental Controllers, Richard S. Gates, Douglas G. Overhults, Larry W. Turner
Biosystems and Agricultural Engineering Faculty Publications
Sixteen commercially available electronic environmental controllers were evaluated. The units were classified according to enclosure type, analog versus microprocessor based control, power supply, sensors, alarms, control relays and triac output, interval timers, outside temperature feedback, and retail price. An assessment of these controllers indicated several critical limitations in the application of this technology.
The use of integrated controllers for animal production has the potential for substantial improvements in production efficiencies. If the limitations observed in the present controller technology, as represented by this sample, are addressed, industry acceptance of the technology can be accelerated. A uniform standard to address this …
Identifying Chemical Hazards For Regulation: The Scientific Basis And Regulatory Scope Of California's Proposition 65 List Of Carcinogens And Reproductive Toxicants, William S. Pease
RISK: Health, Safety & Environment (1990-2002)
Noting that the Proposition 65 list has become an authoritative source for hazard identification, Dr. Pease examines its legislative, regulatory and scientific origins. After analyzing the California approach, he offers suggestions for better selection of future regulatory targets.
Scarce Resources, Perception Of Risk, And Collective Action, Nicholas S. Hopkins
Scarce Resources, Perception Of Risk, And Collective Action, Nicholas S. Hopkins
Faculty Book Chapters
[abstract not provided]
Environmental Action At The Community Level, Salah Arafa
Environmental Action At The Community Level, Salah Arafa
Faculty Book Chapters
[abstract not provided]
Human Development And The Environment, Mohsen Tawfik
Human Development And The Environment, Mohsen Tawfik
Faculty Book Chapters
[abstract not provided]
Environmental Challenges In Egypt, Farkhonda Hassan
Environmental Challenges In Egypt, Farkhonda Hassan
Faculty Book Chapters
[abstract not provided]
Towards Sustainable Desert Development For Egypt, Adli Bishay
Towards Sustainable Desert Development For Egypt, Adli Bishay
Faculty Book Chapters
[abstract not provided]
Denial In The Decisive Decade: Towards Intervention And Common Action, Sandra Postel
Denial In The Decisive Decade: Towards Intervention And Common Action, Sandra Postel
Faculty Book Chapters
[abstract not provided]