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  • 1
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    Institute of Physics (IOP)
    Publication Date: 2018-09-19
    Description: Most economic theorists assume that energy efficiency—the biggest global provider of energy services—is a limited and dwindling resource whose price- and policy-driven adoption will inevitably deplete its potential and raise its cost. Influenced by that theoretical construct, most traditional analysts and deployers of energy efficiency see and exploit only a modest fraction of the worthwhile efficiency resource, saving less and paying more than they should. Yet empirically, modern energy efficiency is, and shows every sign of durably remaining, an expanding-quantity, declining-cost resource. Its adoption is constrained by major but correctable market failures and increasingly motivated by positive externalities. Most importantly, in both newbuild and retrofit applications, its quantity is severalfold larger and its cost lower than most in the energy and climate communities realize. The efficiency resource far exceeds the sum of savings by individual technologies because artfully...
    Print ISSN: 1748-9318
    Electronic ISSN: 1748-9326
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Leaching of genetically engineered microbes (GEMs) through soil is a significant concern related to groundwater quality. The objective of this study was to examine the leaching, survival and gene transfer of a genetically engineered microbe and indigenous recipients of pR68.45 in nonsterile, undisturbed soil columns. Pseudomonas aeruginosa PAO25, containing the plasmid R68.45, was added to the surface of undisturbed soil columns (10 cm diameter × 80 cm length). Unsaturated flow conditions were maintained by 100 ml daily additions of 2 mM CaCl2 for a period of 70 days. The population of the GEM exhibited a significant (P = 0.05) linear decline with time. The GEM leached only to a depth of 30–40 cm in 70 days. Transfer of pR68.45 was shown to occur from P. aeruginosa into the indigenous bacterial population although relatively low numbers of transconjugants were observed (log 2 cfu g−1 dry soil). The number of transconjugants also decreased with depth and time. Leaching of transconjugants, however, occured more readily than that of the GEM, probably as a result of plasmid transfer into smaller, more mobile bacteria. At 70 days incubation, no GEMs were detected in the columns, while transconjugants were observed at several depths. These results demonstrate the importance of examining both the survival and movement of GEMs and transconjugants in soil.
    Type of Medium: Electronic Resource
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