Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 187 for “"CCA"”.
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An Investigation into Attitudes towards Recycling CCA Treated Lumber
… contractor's decision intention to recover used CCA lumber. The purpose of this research was to determine the factors that affect recovery. This research proposes that a contractor's decision intention to recover is affected by evaluations, beliefs, subjective norms, and perceived barriers to …
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The Feasibilty of Recycling CCA Treated Wood From Spent Residential Decks
The amount of CCA treated wood being removed from spent residential decks is increasing at a tremendous rate. While most spent CCA treated wood is being disposed in landfills, further useful and environmentally beneficial alternatives have to be met. This research estimated the percentage of …
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Embryo and Gamete Development Upon Exposure to CCA Components: CrO3, CuO, and AS2O5
… (As<sub>2</sub>O<sub>5</sub>) as a mixture (CCA) or individually. Controversy surrounding the safety of CCA-treated wood centers primarily on the toxicity of its components and the potential for these metals to be released from the wood.</p> <p>The aim of this research is to test the …
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Studies of the interactions of CCA and ACA preservative treated wood with soil
… interface between soil, and wood treated with CCA or ACA wood preservatives were investigated using a series of leaching and soil burial studies. The softwoods Scots pine (<i>Pinus sylvestris</i>, L.), Sitka spruce (<i>Picea sitchensis</i>, Carr) and the hardwood lime (<i>Tilia vulgaris</i>, …
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An experimental study of the environmental impacts of CCA-treated wood waste land application
Chromated copper arsenate (CCA) has been the most commonly used wood preservative in the UK; up until its partial ban in 2004. The preservative prolongs the service life of wood by 20-50 years by making it resistant to biological attack. As such, in-service CCA treated wood is expected to be a …
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An analysis of the retail customer of CCA pressure treated lumber, timbers and plywood
… general product quality and risk perceptions of CCA pressure treated lumber products. Primary data were acquired via two separate nationwide mail surveys; one included 3,361 PRO's, the other was administered to 3,224 households. Findings indicate that each of these retail customer groups is …
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Retardance of rainwater-leached metals from CCA-treated (chromated copper arsenate) wood ash in soil
… of wood treated with chromated copper arsenate (CCA) preservative produces an ash that contains high concentrations of copper, chromium, and arsenic. The subsequent leaching of these metals from burn sites can produce soil and water contamination. Soils have varying natural abilities to reduce …
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Chemical and biological factors affecting the performance of CCA and ACA treated wood in soil
The performance of CCA and ACA treated wood in soil contact has been investigated with particular reference to the effect of high concentrations of nitrogen on the decay process, fixation and leachability of preservative elements and the role of lignin in the binding of nitrogen and preservative …
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A COR DA PÓS-GRADUAÇÃO DO CCA/UFPB: UM ESTUDO SOBRE AS QUESTÕES ETNICAS E PRECONCEITO
In Brazil, there are still many prejudices about the african-Brazilian community. Our society is permeated by the culture and ideology brought by Portuguese colonialism, this demonstrates a prevailing white domination until the present day in different social segments, even after the end of slavery …
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An investigation of the durability of UK grown softwood distribution poles CCA-treated by sap-displacement
… spruce and Sitka spruce poles treated with CCA by the high pressure sap-displacement process, was investigated using full size poles in a field site and representative pole sections in an accelerated decay system.<br/><br/>Analysis of cores removed from the field poles showed a significant …
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An investigation of CCA-treated wood in informal caterers' fuel stocks and related airborne arsenic in the Cape Town region
In developing countries, energy poverty remains a challenge, impacting on the environment, health, security and well-being of an estimated 3 billion people. Fuel wood remains an important but environmentally problematic fuel in this context. The urban poor are known to make use not only of …
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Online sorting of wood treated with chromated copper arsenate using laser induced breakdown spectroscopy
The use of the CCA chemical as a wood treatment to protect against insect and fungal deterioration has had commercial application for the past twenty-five to thirty years. While CCA treated wood has several benefits, with perhaps the most important being the saving of an estimated 225 million trees …
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Forging the Future: Climate Change Disclosure, Role Expectations, and the Identity of Professional Accountants
… of accountants in climate change accounting (CCA), and informs the most important (salient) identity of professional accountants in CCA and sustainability reporting. It presents three individual studies, comprising of i) a comprehensive review on CCD literature with a conceptual framework and …
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TRANSLATIONAL RESEARCH TARGETING BILIARY TRACT CANCER
… the biliary tract, including cholangiocarcinoma (CCA) and gallbladder cancer (GBC). In this translational research program targeting BTC, we focus on three aspects: the development of a combination treatment against CCA, the exploration of the immune background of GBC, and the establishment of a …
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Policy-based approach for context-aware systems
… using the Calculus of Context-aware Ambients (CCA). CCA has been proposed as a suitable mathematical notation to model mobile and context-aware systems. We decided to use CCA due to three reasons: (i) in CCA, mobility and context-awareness are primitive constructs and are treated as first-class …
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