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Environmental pollution
1971
Over 7500 entries, arranged under Ecological systems, Physical sciences applied to pollution, Effects of pollution, Air and water pollution, and Causes of pollution. Besides identification of the research, researcher, and institution, eachentry gives information about purpose, methods, progress, and source of support. Subject, researcher, supporting agency indexes.
Показать больше [+] Меньше [-]Research supplement to Journal, Water Pollution Control Federation
1971
The effects of agricultural waste water treatment on algal bioassay response | Bio-engineering aspects of agricultural drainage, San Joaquin Valley, California
1971
Denitrification by anaerobic filters and ponds
1971
Sword, Bryan R.
Prevention and correction of excessive infiltration and inflow into sewer systems
1971
Multidirectional turbulence probe development
1971
Atterbury, Thomas J. | Sorenson, James E. | Groom, Jack J.
Development of a unidirectional-turbulence probe was undertaken to investigate the feasibility of a small-diameter strain-gaged diaphragm-type pressure transducer and a self-adjusting depth compensation air reservoir for use in the follow-on development of a small (1/2-inch diameter) multidirectional-turbulence probe. A unidirectional probe was developed which is capable of monitoring water velocities over a range of 0.5 to 5 ft/sec in turbulence frequencies of 0 to over 100 Hertz and which will automatically operate in water up to 10-feet deep. Sealing inadequacies in both the air reservoir membrane and the pressure diaphragm permit moisture entry into the air volume covering the strain gages. This has given rise to balance drift and circuitry ground problems that have resulted in the placing of limitations on the water exposure and turbulence monitoring times for the unidirectional probe. These problems also suggested that the concepts cannot be immediately incorporated into a multidirectional probe design.
Показать больше [+] Меньше [-]The economics of water supply and quality
1971
Dortman, R. | Jacoby, H.
A system for industrial waste treatment RD & D project priority assignment
1971
Bramer, Henry C. | DeHaven, Robert C. | Leavitt, Alvan W.
A research project to identify by remote sensing particulate size and distribution for air pollution assessment
1971
Fuller, C. E.