980 resultados para Rede Natura 2000


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It is now clear that fisheries resources are among the key assets contributing to the national development objective of poverty eradication through providing food, employment, income and export earnings. It was recently reported in the papers that monthly fish exports had increased by 23% and fetched about US$ 10 Million during the month of November 2001 alone. This value may be underestimated as it is based solely on recorded exports from fish processing factories numbering 12. Although fisheries resources are renewable they can be depleted through unsustainable exploitation. It is therefore important to ensure that there is guided development and management of this asset so that it can continue contributing to the livelihood of the people who depend on it. Therefore, FIRRI contributes to the fisheries sub-sector developmental objective of ensuring increased and sustainable fishery production and utilization by providing information to guide sustainable management of capture fisheries resources and development of aquaculture.

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Submitted by zhangdi (zhangdi@red.semi.ac.cn) on 2009-04-13T11:45:31Z

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Submitted by zhangdi (zhangdi@red.semi.ac.cn) on 2009-04-13T11:45:31Z

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瑞典皇家科学院2000年10月10日宣布,将2000年诺贝尔物理奖授予三位科学家,他们是俄罗斯科学院圣彼得堡约飞技术物理研究所的Zh.I.Alferov、美国加利福尼亚大学的Herbert Kroemer和美国德克萨斯仪器公司的Jack S.Kiby,以表彰他们为现代信息技术,特别是他们发明的高速晶体管、激光二极管和集成电路(芯片)所作出的奠基性贡献。Kilby由于发明并发展了集成电路技术而获奖,通过这项发明,微电子学成为所有现代技术的基础。Kilby的获奖成果已有另文(见2000年第3期《物理》)评述。Alferov和Kromer则是由于他们在半导体异质结及其在电子和光电学中的应用方面的突出贡献则获奖。该文仅就这两位诺贝尔物理奖得主在异质结及其在光电子中的应用方面的贡献进行评述。