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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.
61

A comprehensive study of recycled concrete aggregates as a drainable base layer for pavements

Bosquez, Juan. January 2009 (has links)
Thesis (Ph.D.) -- University of Texas at Arlington, 2009.
62

Recycling : the way towards sustainable waste management for Hong Kong? /

Sin, Hang-chun. January 2002 (has links)
Thesis (M. Sc.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 95-101).
63

Accumulation

Raby, Erica M. January 2009 (has links)
Thesis (M.F.A.)--Kent State University, 2009. / Title from PDF t.p. (viewed Jan. 22, 2010). Advisor: Darice Polo. Keywords: Installation; assemblage; mixed-media; drawing; playful arrangements; doodling; envrionmental art; intuitive process; mixed-media drawings; environmental concerns; ecological concerns; fragile environment; site-specific; craft-based methods; post-consumer. Includes bibliographical references (p. 28).
64

Sustainability studies in recycling post consumer carpet

Subbiah, Valli 25 August 2008 (has links)
This thesis presents some novel techniques to process Post Consumer Carpet waste and provides detailed cost comparisons between setting up and running small-scale decentralized units and large-scale centralized chemical facilities. The techniques presented include: a decentralized underlay manufacturing process which does not distinguish between the types of face fiber, a decentralized facility with twin screw extruder to depolymerize nylon 6 face fiber with a concurrent underlay manufacturing facility, a decentralized pallet production facility, and a centralized facility for chemically depolymerizing nylon 6, and nylon 6,6 with a concurrent underlay manufacturing facility The limiting factors to recycling are the collection of significant volumes of material and effective recycling techniques. This is illustrated in this study. The aim of this study is to enable recyclers to assess their recycling activities using various performance parameters, such as payback period of the venture, mass of carpet recycled, and energy used. Thus, this study aims to shed light on the impact of recycling on current carpet consumption per capita. The results indicate that decentralized facilities located in metropolitan areas with populations of over 2 million people have a lower payback period than the large scale centralized facilities that are sparsely distributed throughout the country. These decentralized facilities are also more efficient in reducing the current carpet consumption per capita. The reduced traveling distance for the post consumer carpet from the collection/disposal site to the processing facility should make a huge impact on energy consumption and the corresponding environmental emissions.
65

Sustainability and participation in the governing of water use: the case of water recycling

Stenekes, Nyree, Civil & Environmental Engineering, Faculty of Engineering, UNSW January 2006 (has links)
Urban water recycling has been promoted as one of several ways that water use efficiency could be improved in Australia???s cities, but few such schemes have been introduced. Many urban water-recycling schemes have been proposed, but often, these projects have been rejected because of community opposition. These difficulties suggest that recycling water is not just about having the right answer to any problem, but about the way in which the question is addressed. It is concerned with how practice is institutionalised; not just the rule making, but also the understandings and values that make the rule-making possible. In this thesis, the question of how the system of water governance could be strengthened to encourage sustainable water use through water recycling is examined. An analysis of experiences in three Australian case studies is conducted, in which recycled water was proposed for sustainability, to illuminate the way in which water use is institutionalised. Particular attention is given to the construction of meaning in relation to water use, by considering how water problems are framed and negotiated by different stakeholders and groups and the significance of the multiplicity of interpretive frameworks in use for the institutionalisation of practice. The analysis draws on institutional organisational theory and interpretive methods, which regard interpretation as one element (cognitive) in the stabilisation of social practice and closely linked to organisation (regulative) and values (normative). The study findings suggest meaning was a very important part of institutional change. Participants tended to construct policy issues as they became involved by drawing on different interpretive frameworks embodying different values and expectations. These interpretations reflected the organisational structuring of practice, such that the position/role in the organisational field reflected an actor???s interpretation of problems and/or solutions. Outcomes of the study suggest that institutionalising change in water management is problematic and depends on changes in the regulative, normative and cognitive dimensions of practice, as part of a continuous feedback loop between interpretation and practice. This view of change contrasts with existing research, which tends to see the problem in terms of influencing attitudes of specific groups and assumes preferences precede the action.
66

Zero emission management /

Lam, Lai Fong Janna. January 2001 (has links) (PDF)
Thesis (M.Env.St.)--University of Adelaide, Dept. of Geographical and Environmental Studies, 2001. / Author's name appears as Lam Lai Fong Janna on front cover. Bibliography: leaves 117-120.
67

Integrated waste management a sustainable future /

Phillipi, Scott Elton. January 1900 (has links) (PDF)
Thesis (M.E.S.)--Evergreen State College, 1992. / Title from title screen viewed (3/30/2009). "June, 1992." Includes bibliographical references (leaves 39-46).
68

Solving the solid waste problem : pressure from the public sector for point source reduction /

Pryll, Richard Leonard. January 1992 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1992. / Typescript. Includes bibliographical references (leaves 61-65).
69

Eco battery exchange system /

Kasetsuwan, Rit. January 1992 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1992. / Typescript. Includes bibliographical references (leaf 41).
70

Analysis of recycling behavior, recycling demand, and effectiveness of policies promoting recycling

Sidique, Shaufique Fahmi. January 2008 (has links)
Thesis (Ph. D.)--Michigan State University. Dept. of Agricultural Economics, 2008. / Title from PDF t.p. (viewed July 31, 2009). Includes bibliographical references. Also issued in print.

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