Altough peatlands in southern Quebec are facing increasing pressure, neither specific nor substantial protection measures have been implemented, partly due to a lack of information on this ecosystem, We determined the contribution of peatlands to bird regional diversity by measuring the difference between peatland and associated regional avifaunas. We sampled 112 peatlands located along the Saint Lawrence River during one breeding season. We used data on, regional nesting bird assemblages from the Quebec breeding bird atlas. Peatland bird species contrasted increasingly with regional avifauna from north to south or from undisturbed to managed landscapes. Of the 17 bird species found significantly more often in peatlands than in surroundings, some preferred peatlands in the whole study area and others preferred peatlands only in particular regions. Peatland avifaunas within regions were more similar to each other than to their regional avifauna, and differences between regions probably reflected changes in peatland physiognomy. We conclude that peatlands contribute to enrich local and regional avian diversity, particularly in the lowlands of the Saint Lawrence River, where industrial pressure on peatlands is highest.
来源期刊：Transmission & Distribution World: The Information Leader Serving the Worldwide Power-Delivery Industry
年/卷/期：2002 / 54 / 7
A new service from Portland General Electric (PGE, Portland, Oregon, U. S.) is saving customers tens of thousands of dollars in energy costs. PGE created E-Manager to allow facility managers to analyze their energy consumption online at 15-minute intervals Customers can go to the Web for complete data, powerful analysis tools and charts, helping them detect abnormal energy use and focus on costly problem areas.
A technology of industrial decoration of majolica, faience, porcelain, and pottery using polymer-powder pigments is developed and implemented. The technological schemes of single-color and multi-color decoration of ceramics using such pigments are considered. Polymer-powder pigments can be used to decorate a wide range of ceramic products using an energy-saving technology. Two decoration technologies can be combined in the following order: glazing -polymer-powder decoration.
Demag Ergotech has withdrawn the claims it made this week that its energy-saving Elexis electric hybrid injection moulding machines are included in the government's Enhanced Capital Allowance scheme,and so eligible for a 100% first-year capital allowance.
The Peoples Republic of China intends to exert strong and continuous efforts to improve energy-efficiency and maintain sustainable development, according to senior energy officials quoted by China Daily (Dec 17)."We have a lot to do to ensure an annual 4 to 5 per cent energy-saving rate," Lui Xianfa, vice-director of the State Economic and Trade Commission's Department of Resources Conservation and Comprehensive Utilization, said.
Over the past few years, the interests in and the use of magnesium has increased. Especially the automotive industry has realized magnesium's energy and cost-saving benefits and its light weight. That's why the last IMA-conference found great interest. The 400 attendees in Brussels set a new attendance record for Europe by topping the previous record of 385 in Rome, 1999.
Today, interventions in building will have to meet a series of needs which go well beyond having simply to clad walls. Research has now become an important element which can no longer be put oft and is fundamental for the innovative and constructive' development of the entire building compartment. These were the words with which Pietro Gimelli, director of Uncsaal (National union of constructors of frames in aluminium, steel and their alloys), inaugurated the proceedings of the first Ecbe (European Conference on Building Envelope), the European conference dedicated to building envelope held in Bologna on 20th and 21st March in concomitance with the 2002 edition of Saiedue. The event's sub-title, worthy of note, was "the environment and technology for sustainable building envelope. Energy saving via the innovation of constructions". Research and innovation were the topics covered by Ezio Andreta, head of the division of Research into Industrial Technologies (DG-RTD) within the European Commission in Brussels. First of all, the approach by Andreta to the lines of development which industry must follow regarding "building envelope" was innovative. The keyword of his intervention was in tact 'knowledge', an immaterial value which, according to Andreta, should be used instead of 'material' in order to be truly able to carry out innovative and economically viable research.
Apart from the additional energy expenditure occasioned by non-synchronous operation of kiln and dryer, the following target stipulations are given for the energy demand for brick and tile production with which the statistical mean values can be corrected downwards.Under the operating conditions which appear to be attainable at present, it should be possible to reduce the energy demand for covering the process heat for the production ofMasonry bricks by 12 percent from 1741 kJ/kg to 1528 kJ/kgFacing bricks by 31 percent from 2289 kJ/kg to 1577 kJ/kgClay roofing tiles by 14 percent from 2090 kJ/kg to 1793 kJ/kgThe relatively small energy saving potential of masonry bricks and clay roofing tiles here shows the on average good and modern technical state of the kilns used for these product groups. The production of facing bricks and clinker bricks makes it apparent that there are greater possibilities for energy saving here. The causes of this are the older technical plant on average however, which is very often operated with reduction colours and other deliberately employed surface effects, which lead to higher exhaust gas losses and hence higher energy consumption.In masonry brick production, which at 12 percent shows only very slight energy saving possibilities, as in the past it is of great interest to cover as large as possible an amount of the energy demand by combustible additives to the raw material for pore-forming, in order thus to reduce the fuel used. This is of advantage financially and ecologically, as long as exceeding the maximum limits (see ZI 12/2001) is dispensed with.
Eureka looks at the energy savings that can be made by selecting the most appropriate geared motor. The engineering industry is under pressure to improve competitiveness at a time when it is also wrestling with the Climate Change Levy. But, while much has been written about motors with Class Eff1 efficiency, the savings in electricity used are actually relatively low. A typical 7.5kW motor running loaded for 4,000 hours/year will incur electricity costs of approximately￡1,350. Specifying an Eff1 instead of Eff3 would result in a saving of only 4% with a payback period for the extra cost of about two and a half years.
Tom Shelley reports on an energy saving way of cooling freezers, and some of the more unusual spin-off benefits that could follow in its wake. Gas turboexpanders, rotating at up to 400,000rpm, form the basis of novel commercial and eco-friendly super freezers. Using only air as a working fluid, they are much 'greener' than conventional machines and are particularly attractive economically when they form part of a combined cold/heat/power generating system. The company that makes them is already supplying units to commercial food freezing factories and sees great potential for the technology in the processing of old rubber tyres, turning them into useful products for profit, and in lower-energy-consuming desalination plants.