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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.
411

Characterizing Episodic Stream Acidification Using a Concentration-Duration-Frequency Methodology in Watersheds of the Great Smoky Mountains National Park

Mauney III, John Leland 01 December 2009 (has links)
Episodic stream acidification occurs as storm events temporarily reduce acid neutralizing capacity and pH. Stream acidification is suspected to have damaging effects on the health of aquatic ecosystems and biota and is dependent on various watershed characteristics such as drainage area, elevation, slope, and surficial geology. Here, a stochastic modeling approach is applied to continuous pH data for multiple stream monitoring sites within the Great Smoky Mountains National Park in order to characterize episodic acidification responses during stormflows for different streams. The approach summarizes voluminous pH data recorded by water quality sondes at 15-minute intervals into concentration-duration-frequency relationships. Unique to this study is the ability to characterize the episodic acidification response to watershed attributes without using baseflow or single-point stormflow measurements. A slope metric of mean pH event duration, a measure of episodic acidification response was determined to correlate with basin area and elevation. In contrast, baseflow studies have shown elevation to be the main driver of chronic acidification. It appears that during stormflows transport and flushing of stored anions and cations govern the response of streams included in this study.
412

Public participation in environmental management : seeking participatory equity through ethnographic inquiry

Stone, John V. January 2002 (has links)
Thesis (Ph. D.)--University of South Florida, 2002. / Title from PDF of title page. Document formatted into pages; contains 323 pages. Includes bibliographical references.
413

Characterization of solid waste in a bioreactor landfill using seismic borehold techniques /

Glancy, Taryn. January 1900 (has links)
Thesis (M.App.Sc.) - Carleton University, 2009. / Includes bibliographical references (p.123-125). Also available in electronic format on the Internet.
414

Extracellular electron shuttle mediated biodegradation of hexahydro-1,3,5-trinitro-1,3,5-triazine /

Kwon, Man Jae. January 2009 (has links)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009. / Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3713. Adviser: Kevin T. Finneran. Includes bibliographical references (leaves 159-175) Available on microfilm from Pro Quest Information and Learning.
415

The influence of shear on extracellular polymeric substance production in membrane bioreactors /

Menniti, Adrienne L. January 2009 (has links)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009. / Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3714. Adviser: Eberhard Morgenroth. Includes bibliographical references (leaves 125-132) Available on microfilm from Pro Quest Information and Learning.
416

DELINEATION OF COMMON SOURCE FOCI REQUISITE FOR EPIDEMIOLOGY AND ENVIRONMENTAL CONTROL IN INTENSIVE CARE UNITS

RENKOWSKI, LORRAINE ANN. January 1970 (has links)
Thesis (Ph. D.)--University OF MICHIGAN.
417

EFFECTS OF ETHYLAMINOETHANOL ON PHOSPHOLIPID METABOLISM AND HEPATIC MICROSOMAL ENZYME ACTIVITY

STEVENS, ANNE CAMILLA MEYERS. January 1980 (has links)
Thesis (Ph. D.)--University OF MICHIGAN.
418

BIOLOGICAL EFFECTS OF HEXACHLOROCYCLOPENTADIENE IN THE RAINBOW TROUT, SALMO GAIRDNERI

SINHASENI, PALARP. January 1982 (has links)
Thesis (Ph. D.)--University OF MICHIGAN.
419

PRE-OPERATIONAL ENVIRONMENTAL MONITORING PROGRAMS AT NUCLEAR FACILITIES

GOLDEN, JOHN CHRISTOPHER, JR. January 1970 (has links)
Thesis (DR. P.H.)--University OF MICHIGAN.
420

THE EPIZOOTIOLOGY AND EPIDEMIOLOGY OF SCHISTOSOME DERMATITIS IN SOUTHEASTERN MICHIGAN

STROHM, BRIAN CURTIS. January 1979 (has links)
Thesis (Ph. D.)--University OF MICHIGAN.

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