Xem 1-20 trên 76 kết quả Woods system
  • With shortages of fossil energy and heavy biomass energy use occurring in both developed and developing countries, a major focus has developed worldwide on renewable energy systems. Currently, a heavy focus is on biofuels made from crops, crop residues and wood. Though it may seem beneficial to use renewable plant materials for biofuel, their use raises many concerns about major environmental problems, including food shortages and serious destruction of vital soil resources.

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  • In addition to each of the individual barrier areas, an additional complication arises due to the large degree of interaction among the areas shown in Figure 6. For example, if we assume that altering the biological composition of a particu- lar source crop would be beneficial, then this may have consequences on the process required, the type and performance of materials to be utilized, the infra- structure required to support this use, and the scientific education of students who may be subsequently employed within such a system.

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  • Agriculture and forestry are poised on the brink of a quantum leap forward through the further application of exciting new tools such as genomics and transgenic plants. In the near future, it will be possible to produce a higher quantity of improved quality crops than even imagined just a few years ago.  In addition to feed and food, it will be possible to provide raw materials for industrial uses. For example, cotton fibers, wood ligno-celluloses, corn  carbohydrates, soybean oils, and other plant constituents will be altered via designed changes in metabolic pathways.

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  • Certain jobs have a notorious reputation for causing cancer. Asbestos and lung cancer and mesothelioma, a cruel and invariably fatal cancer. Vinyl chloride exposure and liver cancer. Work in the rubber industry and bladder cancer. And nasal cancer and work with wood or leather dust. But many other jobs have a risk which is just as real, but which is less commonly known. The man who delivered the milk to an asbestos factory in Canada got cancer as a result. Nurses handling cancer drugs can be at risk.

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  • In addition to local periodontal tissue involvement, chronic infection of the periodontium together with continuous up-regulation of pro-inflammatory responses and immune mediators may contribute to systemic sequel including diabetes, preterm delivery of lowweight birth babies, lung inflammation, arthritis and cardiovascular diseases (CVD).

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  • In 2010, the Nursing and Midwifery Board of Australia raised the English language proficiency requirement for registration as a nurse to an Overall score of 7.0 in the Academic module of the IELTS Test, with 7.0 in each of the components that comprise the Test. Other professional registration boards have also instituted an IELTS requirement (discussed in Merrifield, 2008). According to information on the IELTS website, as of November 2010, 48 professional associations in Australia identified an IELTS requirement (International English Language Testing System, 2010a).

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  • Technological advances in cases are included in the equipment around us every day, our life is safer, hand in hand with economic advantage and ecology. This book collects original research related to composite materials, their properties and tested from different perspectives. Programs are divided into five groups according to their main purpose: the material properties, natural resources, manufacturing, Experimental and model.

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  • Renewable Energy is energy generated from natural resources - such as sunlight, wind, rain, tides and geothermal heat - which are naturally replenished. In 2008, about 18% of global final energy consumption came from renewables, with 13% coming from traditional biomass, such as wood burning. Hydroelectricity was the next largest renewable source, providing 3% (15% of global electricity generation), followed by solar hot water/heating, which contributed with 1.3%. Modern technologies, such as geothermal energy, wind power, solar power, and ocean energy together provided some 0.

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  • Synthetic polymers are essential for modern human life, since they are used in industrial and agricultural fields. However, most synthetic polymers that have been developed by using petroleum and coal as raw materials are not compatible with the environment, since they cannot be included in the natural recycling system. There are serious contradictions between the convenience that people require today and compatibility with the natural environment. It is easy to say that we should use only natural materials in order to solve the problems coming from man-made materials.

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  • Of course, biomass and food brought this key trade-off biomass use: the controversial food or fuel. With two primary uses of biomass appropriate resolution of this balance is essential for biomass acceptable and beneficial use in the future. Obvious example of biomass for energy is ethanol misuse produced from corn, a conversion process is relatively inefficient as well as a direct Collision course with the way corn as food.

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  • “There is no such thing as an easy experiment, nor is there any substitute for careful experimentation in many areas of basic research and applied product development.” From Experimental Methods for Engineers by J. P. Holman Measurement is a multidisciplinary experimental science. Measurement systems synergistically blend science, engineering and statistical methods to provide fundamental data for research, design and development, control of processes and operations, and facilitate safe and economic performance of systems.

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  • o maintain the ability to chew with one's own teeth over as much of one's life as possible, all people should receive regular check-ups by a dentist once or twice yearly, even if they have no symptoms such as pain or swelling. Finally, a book describing in detail the oral care system presented in this pamphlet was published by Ishiyaku Shuppan in the summer of 2004. In addition, a videotape showing in detail the oral care system was published by Chuohoki Shuppan in 2003. Please refer to it for more detailed information. ...

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  • Agriculture and forestry are poised on the brink of a quantum leap forward through the further application of exciting new tools such as genomics and transgenic plants. In the near future, it will be possible to produce a higher quantity of improved quality crops than even imagined just a few years ago. In addition to feed and food, it will be possible to provide raw materials for industrial uses. For example, cotton fibers, wood ligno-celluloses, corn carbohydrates, soybean oils, and other plant constituents will be altered via designed changes in metabolic pathways.

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  • We inquired about the training courses that laborers have received at some point in their working lives on topics like the safe handling of pesticides and it was found that 74,2% had never been trained, so they did not have the necessary skills to handle such substances.

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  • For example, because of their different jobs and schedules, women and men may be exposed to toxins in different amounts and levels. In South Africa, women are exposed more often to pesticides during planting and harvesting and men during application (London et al., 2002; Kisting in WHO, 2005). Men’s jobs in factories can involve higher exposure than women’s to toluene, a chemical solvent that can cause various problems to the reproductive and nervous systems (Neubert et al., 2001).

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  • Continuing improvements led to the furnace and bellows and provided the ability to smelt and forge native metals (naturally occurring in relatively pure form).[38] Gold, copper, silver, and lead, were such early metals. The advantages of copper tools over stone, bone, and wooden tools were quickly apparent to early humans, and native copper was probably used from near the beginning of Neolithic times (about 8000 BC).[39] Native copper does not naturally occur in large amounts, but copper ores are quite common and some of them produce metal easily when burned in wood or charcoal fires.

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  • In 1999, our department was the first in the nation to establish a clinic dedicated to oral care for the elderly and other people requiring care. In that time we have developed an oral care system to provide effective oral care for the elderly and other people requiring care, which is easy on both them and their families, and an oral care support instrument for elderly requiring a high level of care. Using these methods and instruments, we have attempted to raise the QOL of both the dependent elderly and their caregivers, and improve the general health condition...

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  • There were around 20 million enterprises in the non-financial business economy across the EU-27 in 2005; of these enterprises 99.8% were SMEs, the majority of which were micro enterprises. It is recognised that an SME-friendly business environment (e.g. in the Small Business Act), both at Community level and in the Member States, is crucial for growth and jobs in Europe. In some key industries, such as textiles, wood products, metal products, publishing, construction and furniture-making, they account for more than 70% of all jobs.

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  • The pricing system used in this occasion describes how much money a smallholder earns from selling the trees from one rai. In case of a high latex- yielding clone the farmer can sell the wood for average price of BHT 50 000 from one rai. If the smallholder has been harvesting a clone combining high latex yield and high wood yield, he can get as much as BHT 70 000 per rai. The yield per hectare is in average 138,9 m3 , but due to inaccessibility of plantation areas only 75 % of available logs will reach the sawmills in...

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  • Theimpactonthenaturalhabitatisofgreatconcernatpresent.Increasingdemandcouldforce thedestructionofnaturalhabitats,breedinggrounds,removalofwintercover,shelterbedsfor somespecies.Mechanizationofagriculturesawthedestructionofnests,burrows,etc.Similar impactbutwithgreaterintensitycanbeexpectedtoresultfromenergycropplantations. Extendingenergycropfarmingintounusable,nonagriculturallandcanhaveanegativeimpact on that particular eco system.

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