• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1101
  • 179
  • 149
  • 54
  • 37
  • 26
  • 22
  • 22
  • 22
  • 22
  • 22
  • 21
  • 18
  • 8
  • 6
  • Tagged with
  • 1970
  • 1138
  • 508
  • 461
  • 346
  • 262
  • 221
  • 211
  • 202
  • 202
  • 187
  • 187
  • 175
  • 166
  • 154
  • 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.
461

Identifiying cost savings through energy conservation measures in mechanically aerated activated sludge treatment processes in southeast Florida

Unknown Date (has links)
This thesis presents a model which estimates energy and cost savings that can be realized by implementing Energy Conservation Measures (ECMs) at mechanically aerated wastewater treatment plants (WWTPs) in southeast Florida. Historical plant monitoring data is used to estimate savings achieved by implementing innovative aeration technologies which include : 1) Fine Bubble DIffusers ; 2) Single-Stage Turbo Blowers ; 3) Automatic Dissolved Oxygen (DO) Control. Key assumptions for modeling performance of each technology are researched and discussed, such as trends in the future cost of electricity, efficiency of blowers, and practical average DO levels for each scenario. Capital cost estimates and operation maintenance (O&M) costs are estimated to complete life-cycle cost and payback analyses. The benefits are quantified on an individual and cumulative basis, to identify which technologies are cost-beneficial. The results demonstrate that levels of payback of 20 years or less are available at the three WWTPs studied. / by Eric Stanley. / Thesis (M.S.C.S.)--Florida Atlantic University, 2012. / Includes bibliography. / Electronic reproduction. Boca Raton, Fla., 2012. Mode of access: World Wide Web.
462

Application of a computer model in designing Kansas feedlot waste control systems

Peterson, Michael J January 2011 (has links)
Typescript. / Digitized by Kansas Correctional Industries
463

The attitudes of the residents and the municipality of Thulamahashe in the Limpopo Province of South Africa towards waste management

Mathebula, N. P. January 2006 (has links)
Thesis (MPA.) --University of Limpopo, 2006 / Refer to the document
464

Government Policy and Private Organizational Forms: Analysis of Refuse Collection and Disposal in Three Metropolitan Cities

Wright, Thomas 01 January 1996 (has links)
This study explores refuse collection as a municipal service using qualitative methods to examine how government makes decisions about residential refuse collection services in Portland, Gresham, and Beaverton, Oregon. The study explores the history of refuse collection in these three cities to identify factors that influence bureaucratic behavior and decision making when selecting a municipal service delivery option for refuse collection. Public choice and public policy analysis theory are used to discuss those non-monetary considerations present when government makes decisions about service arrangements. Qualitative data was collected from public officials and private haulers involved in refuse collection in the three cities. This qualitative process was to capture, in context, the development of the industry. The use of a single criterion in determining choice of private organizational forms may not create the results desired by municipal governments. Choice in the selection of a service arrangement has two important aspects: (1) the array of service arrangement options that can be developed and (2) the contextual environment within which bureaucrats operate and which influences the decision making process. It was found that decisions about which type of service arrangement to use for refuse collection did not always stem from monetary factors such as cost. Non-monetary factors such as tradition, legal considerations, and lobbying can influence decisions about which type of service arrangement to use.
465

Estimation of submarine groundwater discharge into Tolo Harbour

Tse, Kiu-chung. January 2006 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.
466

Environmental radiation monitoring at the low level radioactive waste storage facility in Siu A Chau and development of a particle dispersion model in marine environment

Chiu, Yu-yeung. January 2006 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.
467

Bacterial inactivation and dispersion in cold ocean waters /

Thoms, Joseph I., January 2000 (has links)
Thesis (M.Eng.)--Memorial University of Newfoundland, 2000. / Bibliography: p. 138-143.
468

Economic perspectives on the siting of a municipal solid waste facility

Kim, Hyuncheol. January 2003 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 2003. / Includes bibliographical references (leaves 156-164).
469

Optimization of high-level waste loading in a borosilicate glass matrix by using chemical durability modeling approach

Mohammad, Javeed. January 2002 (has links)
Thesis (M.S.)--Mississippi State University. Department of Chemical Engineering. / Title from title screen. Includes bibliographical references.
470

Environmental risks, subjectivity, and political choices : the Korean case /

You, Seungkwon, January 2002 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2002. / Typescript. Vita. Includes bibliographical references (leaves 231-239). Also available on the Internet.

Page generated in 0.0405 seconds