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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 441 to 450 of 627 (0.023 seconds)Spelling suggestions: "subject:"La arid"" "subject:"La ari""
| 441 |
Water Quality Transformations and Groundwater Recharge of Sewage Effluent Releases in an Ephemeral Stream ChannelInce, S., Phillips, R. A., Wilson, L. G., Sebenik, P. G. 09 1900 (has links)
Project Completion Report, OWRT Project No. A-051-ARIZ / Agreement No. 14-31-0001-5003 / Project Dates: July 1974 - June 1975 / Acknowledgement: The work upon which this report is based was supported by funds provided by the United States Department of the Interior, Office of Water Research and Technology, as authorized under the Water Resources Research Act of 1978. / Bio-physicochemical measurements were made on treated sewage effluent releases at established locations within the channel of an ephemeral stream, the Santa Cruz River of Southern Arizona. Water samples were taken in chronological sequence as the effluent moved downstream, to trace changes in quality parameters during low and high hydrograph stages. Results indicate that dissolved oxygen (DO) concentrations at low effluent flows were higher than DO concentrations at high effluent flows; while, conversely, biochemical oxygen demand (BOD) concentrations at low effluent flows were generally lower than BOD concentrations at high effluent flows. Biochemical oxygen demand concentrations are affected by waste loadings, flow conditions, phytoplankton growth and nitrification. Mean river deoxygenation rates (k ) in sewage flows after six river miles from the Tucson Sewage Treatment Plant were always negative or increasing, indicative of nitrification, algal growth, and concentration of organic constituents through seepage losses.
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| 442 |
The geology and ore deposits of Hiltano Camp, ArizonaFeiss, Julian William January 1929 (has links)
No description available.
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| 443 |
An Economic Survey of Pinal County AgricultureUniversity of Arizona.; Agricultural Extension Service. 04 1900 (has links)
This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.
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| 444 |
Dimensions of a new careers programGreen, Nathalene Carter, 1933- January 1972 (has links)
No description available.
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| 445 |
Resistance of indicator organisms to chlorinationClinger, Robert Christopher, 1946- January 1970 (has links)
No description available.
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| 446 |
A survey of the Verde drainageJackson, Earl, 1910- January 1934 (has links)
No description available.
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| 447 |
Predicting fragmentation characteristics of a block caving orebodyWhite, Daniel Howard, 1950- January 1977 (has links)
No description available.
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| 448 |
A supervisory human relations training evaluation project, measuring attitude changes in supervisors and in their superiors and subordinatesPurtell, Scott Robert, 1954- January 1978 (has links)
No description available.
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| 449 |
The geology and ore deposits of the Indiana Mine area, Pima County ArizonaRuff, Arthur W. January 1951 (has links)
No description available.
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| 450 |
Stratigraphy and structure of a part of the Canada del Oro district, Santa Catalina Mountains, Pinal County, ArizonaWallace, Roberts M. (Roberts Manning), 1915- January 1951 (has links)
No description available.
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