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1.
The EU Green Paper on Maritime Policy is the European response to the new generation of ocean strategies based on science, technology and innovation aimed at new objectives, such as the strengthening of security and access to new resources. The European character of the proposal is found in the presence of social, cultural and historical elements, what is called the “European vision”. The viability of a European vision of the oceans and the idea of maritime empire as an extension of the current concept of empire within the general context of emerging ocean strategies are the elements offered up for debate on this European Union initiative.  相似文献   
2.
科技期刊发展的挑战与机遇   总被引:3,自引:0,他引:3  
中国加入世贸组织后 ,面对开放的世界性大市场的直接冲击 ,我国出版发行行业的竞争必将更加激烈。优胜劣汰 ,会直接考验每个出版社、每份期刊。为了使我国的期刊在竞争中成为胜者 ,探讨了科技期刊参与竞争的困难与优势 ,提出了如何提高我国科技期刊竞争力的粗浅看法  相似文献   
3.
地下水影响滑坡稳定性。采用竖井分段开挖的"坎儿井"式排(截)水工程治理,取得较好效果,值得推广。  相似文献   
4.
We used geologic and geochemical techniques to document the change with time of the distribution and concentration of contaminated bottom sediments in southern Lake Champlain near an International Paper Company plant. Our work, initiated in 1972, was expanded on behalf of Vermont citizens in a class-action suit against the International Paper Company. To update our 1972–1973 results, we collected nine cores in 1988 upstream and downstream from the paper plant effluent diffuser. Water content, volatile solids, organic carbon, and three ratios, Al/Si, Cl/Si, and S/Si, in addition to megascopic and microscopic observations, were evaluated to identify and trace the distribution of effluent and to measure the thickness of sediment affected by or containing components of effluent. Analyses were carried out on samples from the cores as well as from effluent collected directly from the plant's waste treatment facility. In 1973, two years after the plant opened, we cored near the diffuser; sediment contaminated with effluent was 4.5 cm thick. In 1988, in the same area, sediment contaminated with effluent was 17 cm thick. In 15 years, water content increased from 72 to 85 percent, volatile solids from 7 to 20 percent, and organic carbon from 2 to 12 percent. Cl/Si and S/Si were high only near the diffuser and were zero elsewhere. In the area of the diffuser, contaminated sediment appears to be accumulating at a rate of about 1 cm/yr. At a control location 22 km upstream (south) from the plant, the top, poorly consoli-dated layer was only 1 cm or less thick both in 1973 and in 1988. The class-action suit was settled in favor of the plaintiffs for $5 million.  相似文献   
5.
Biological diversity, or biodiversity, is high on the international agenda for nature conservation. Marine and coastal ecosystems account for an important share of the biological diversity on Earth. As a consequence many international conventions, European legislation and national laws refer to marine biodiversity. The protection of marine biodiversity is a complex legal issue as it requires consideration of geographic (between land and sea), political (between conservation and exploitation), and economic (between fisheries, tourism, intellectual property and many other sectors) factors. Like Matryoshka dolls, marine biodiversity is a heterogeneous notion difficult to address as one discrete area in the development of policy agendas or juridical frameworks. In the past decade, the EU has been very active in Promoting Integrated Coastal Zone Management and in developing a framework for an Integrated Maritime Policy. This article reviews the status of marine biodiversity in the policy and legal initiatives of the European Union, a challenging issue to both the objectives of conservation and to the concept of integration.  相似文献   
6.
本文简单介绍了“成都气象学院学报”创刊来的情况,论述了信息管理的重要性,对本学报已发表论文的有关信息管理情况以表格形式作出定量的分析、比较,并指出今后的努力方向。  相似文献   
7.
编辑部 《地质论评》2019,65(1):65010039-65010039
正第40届编委会第一次会议讨论决定,《地质论评》自2019年起,在原有"问题讨论"、"科技述评"、"研究进展"、"通讯资料"、"消息报道"和"新书介绍"6个专栏的基础上,新增两个栏目:"专题细解"和"窥斑速报"。"专题细解"(Theme Paper)专栏为一组对同一专题进行研究的文章,一般由4~7篇组成,一般应当包括一篇评述,其余为专题研究或讨论。"窥斑速报"(Express Letter)专栏快速发表对重要地质问题有关证据或重要地质体的新发现,该栏文章的格式与正  相似文献   
8.
Coal fly ash (CFA) and paper waste (PW) related environmental problems and its recycling techniques have been a major challenge to society. Therefore, it is of crucial importance to develop new recycling methods for CFA and PW. This work proposes a potential new way of developing synthetic aggregates (SA) using CFA, PW, starch waste and ammonium sulfate (AS) as a granular nitrogen fertilizer medium, and their utilization as a soil amendment to improve crop production in the low productive acidic red soil of Okinawa, Japan. Three types of SA with three different nitrogen (N) percentages were produced and used to amend acidic red soil in a pot experiment for the cultivation of Komatsuna, which is also called as Japanese mustard spinach (Brassica rapa var. pervidis). SA had a low bulk density (0.58–0.62 g/cm3), high water holding capacity (0.60–0.64 kg/kg), high saturated hydraulic conductivity (2.34·10–2 cm/s), high mean weight diameter (MWD) (4.32–4.48 mm), alkaline pH (8.58–8.61), high electrical conductivity (EC) (82.18–84.35 mS/m) and high carbon (C) content (68.71–70.07 g/kg) in comparison with the acidic red soil. The trace element concentrations of the developed SA were below the maximum pollutant concentration of individual metals for land application of sewage sludge given by the US Environmental Protection Agency. Scanning electron microscopic (SEM) studies showed the higher structural surface area of SA, where round shaped CFA particles were embedded into the fibrous PW matrix. Incorporation of SA into the acidic red soil not only enhanced soil fertility but also improved the physical and chemical properties of the soil compared to soil without SA addition. SA addition to the acidic red soil significantly increased the growth and yield parameters of Komatsuna compared to soil without SA addition.  相似文献   
9.
分析了稿件的专业分布、地域分布、行业分布和作者群分布情况,说明了我国在GPS与控制测量技术方面的研究与应用的进展情况。  相似文献   
10.
运用CNKI学术不端检测系统对《华南地震》2012年5月至2014年5月的318篇来稿进行检测,对文字复制比、作者单位、基金论文比进行分析。结果表明,地学论文中,文字复制比的数值高低与作者单位及是否基金项目支持无必然的联系,地学研究多有继承性和关联性,易出现文字重合,期刊编辑应从论文的创新性和实用性等多方面来进行判断。  相似文献   
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