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  • About
  • 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.
41

Surface water quality indicators in China and their implications for sustainability

Kwong, Pui-ki. January 2006 (has links)
Thesis (M. A.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.
42

Amending constructed roadside and urban soils with large volume-based compost applications: effects on water quality

Hansen, Nels Edward 25 April 2007 (has links)
Mineral nutrients imported in composted dairy manure (CDM) and municipal biosolid (CMB) amendments for highway-rights-of-way and urban landscapes can pose a threat to surface water quality. Treatments were developed to evaluate recommendations for amending roadside and urban soils with compost at large volumebased rates. Texas Department of Transportation (TxDOT) recommendations were evaluated in 2002 and 2003. Municipal recommendations were evaluated in 2004. Treatments were imposed on 4 by 1.5-m field plots on a constructed soil with an 8.5% slope. Three TxDOT compost application methods were tested; incorporation at 25% by volume (CMT), topdressing over vegetation (GUC), and topdressing a 5-cm compost woodchip mix over bare soil (ECC). In 2003, a 12.5% CMT treatment was substituted for the GUC, and two contrasting composts were compared. In 2002, soil test phosphorus (STP) concentrations (mg kg-1) were 291, 360, 410, and 1921 mg kg-1 in the 0 to 5-cm layer of a course textured CMT, fine textured CMT, GUC, and ECC treatments, respectively using CDM. In 2003, STP concentrations were 264, 439, 496,623, 1115, and 2203 mg kg-1, in the 0 to 5-cm layer after incorporation of CDM and CMB at the 12.5 and 25% volume-based rates, and topdressing the 5-cm CDM- or CMB-woodchip mix over bare soil, respectively. In 2004, contrasting CMB products, relatively low or high in total phosphorus (TP) were incorporated into the soil at 12.5 and 25% by volume, or imported in transplanted sod at the 25% by volume rate. The STP concentrations were 87, 147, 180, 301, 322, and 544 mg kg-1, respective to the previously defined treatments. Runoff water from 14, 10, and 8 natural rain events was used to characterize nutrient and sediment transport in 2002, 2003, and 2004, respectively. Concentration of TDP in runoff water was highly variable for roadside treatments across rain events. Mass losses of TDP were similar after CDM or CMB were incorporated into the soil at 12.5 and 25% by volume. Compost incorporation was the most effective method for limiting TP loss in runoff. Roadway and urban soils are expected to contribute greater TP losses as P concentration increases in soils.
43

Drinking-water quality assessment and treatment in East Timor : case study : Tangkae /

Michael, Heidi. January 2006 (has links) (PDF)
Thesis--University of Western Australia, 2006. / "This thesis is presented in partial fulfilment of the requirements for the Degree of Environmental Engineering, The University of Western Australia, 2006." "Engineering dissertation." Cover title. Includes bibliographical references (p. 92-94). Also available electronically from the Engineers Without Borders website : http://www.ewb.org.au/main/ (Viewed 20/11/2009).
44

Water quality as a land use determinant for the Bear Lake Valley, Utah-Idaho /

Street, Hayden. January 1973 (has links)
Thesis (M.S.)--Utah State University, Dept. of Landscape Architecture and Environmental Planning, 1973. / Includes bibliographical references.
45

Detecting relationships between land use and water quality trends : questions of association, scale, and independence /

Gove, Nancy Elizabeth. January 2001 (has links)
Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 143-146).
46

Water quality in the Cranberry Run wetland /

Houser, Ronald L., January 2009 (has links)
Thesis (M.S.)--Youngstown State University, 2009. / Includes bibliographical references (leaves 51-53). Also available via the World Wide Web in PDF format.
47

Benthic macroinvertebrate assessment of Jones Creek, Dickson County, Tennessee a thesis presented to the faculty of the Graduate School, Tennessee Technological University /

Young, Jade L., January 2009 (has links)
Thesis (M.S.)--Tennessee Technological University, 2009. / Title from title page screen (viewed on Jan. 22, 2010). Bibliography: leaves 27-32.
48

Manganese analysis and speciation in freshwater lakes and reservoirs /

Gipey, Collins D. January 2001 (has links) (PDF)
Thesis (Ph. D.)--University of Queensland, 2001. / Includes bibliographical references.
49

Stream water quality modeling in the Great Smoky Mountains National Park

Barnett, Thomas Wayne, January 2003 (has links) (PDF)
Thesis (M.S.)--University of Tennessee, Knoxville, 2003. / Title from title page screen (viewed Mar. 25, 2004). Thesis advisor: Bruce Robinson. Document formatted into pages (xi, 98 p. : ill, map (some col.)). Vita. Includes bibliographical references (p. 94-97).
50

Better Site Design a correlation between quality of water and quality of life /

Blackburn, Winford Lee, January 2004 (has links) (PDF)
Thesis (M.S.P.)--University of Tennessee, Knoxville, 2004. / Title from title page screen (viewed May 17, 2004). Thesis advisor: Bruce Tonn. Document formatted into pages (ix, 85 p. : ill.). Vita. Includes bibliographical references (p. 69-71).

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