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31.
DSU报复制度的显著改进及我国的应对策略 总被引:1,自引:0,他引:1
传统国际法上的报复多以单边报复形态存在,滥用现象十分严重,威胁和损害到正常的国际法律秩序。由于存在着制度上的缺陷,GATT不仅未能从根本上解决报复滥用问题,而且限制了报复威慑作用的发挥。DSU通过改进规则和程序,强化多边体制,不仅充分地发挥了报复的威慑作用,而且还有效地管制了报复。该制度会给我国WTO争端解决的实践产生直接或者间接的影响,我们应认真研究应对策略,以维护我国的贸易利益和经济安全。 相似文献
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Chang Xin Zhang Chengyu Gao Lan Liu Xiao You Shengping Qi Wei Wang Kang Guo Xin Su Rongxin Lu Han He Zhimin 《天津大学学报(英文版)》2019,25(5):488-496
2,5-Furandicarboxylic acid(FDCA) is a potential biorenewable chemical for applications including plastics, polyamides, drugs, etc. The selective biosynthesis of FDCA from 5-hydroxymethylfurfural(HMF) by a specific enzyme poses a great challenge. In this study, we reported an efficient strategy to produce FDCA from HMF by the tandem biocatalysis of laccase(Cot A-TJ102@UIO-66-NH_2) and Novozym 435. For the first step, a nanoparticle metal–organic framework was synthesized as a carrier to immobilize Cot A-TJ102@UIO-66-NH_2, which was assigned for the production of 5-formyl-2-furancarboxylic acid(FFCA) and featured an enzyme loading of 255.54 mg/g, specific activity of 135.90 U/mg, and solid loading ratio of 99.65%. Under optimal conditions, an ideal FFCA yield of 98.5% was achieved, and the Cot A-TJ102@UIO-66-NH_2 presented a high recycling capacity after 10 cycles. For the second step, Novozym 435 was applied for the further conversion of FFCA into FDCA, presenting a high FDCA yield of 95.5% under the optimized conditions. Novozym 435 also exhibited a high recyclability after eight cycles. As a result, the tandem biocatalysis strategy provided a 94.2% FDCA yield from HMF, indicating its excellence as a method for FDCA production. 相似文献
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Objective: We aim to describe the environment iodine concentration in salt, water and soil along Zhejiang Province coast in the China foreland. It will be helpful for us to judge whether this area is insufficient in iodine and universal iodized salt is necessary or not. Methods: We collected iodized salt samples, drinking water samples (tap water in the towns, and well water or spring water in the villages), water samples from different sources (ditches, lakes, rivers) and soil samples through random sampling in June, 2005. Salt, water and soil iodine was detected by arsenic-cerium redox method. Statistical analysis was expressed as mean±SEMby Windows SPSS 13.0. Results: (1) The iodine concentration in salt was 27.9±4.33 mg/kg (n=108). (2) Seventy-five water samples were collected. The water iodine value was 0.6~84.8 μg/L (mean of 11.66 μg/L). The watershed along the Qiantang River has significantly higher iodine content than the water in Lin'an in mountain area (P<0.01). The iodine content and mean iodine content of tap water, well or spring water and natural water sources were 4.30±2.43 μg/L (n=34), 23.59±27.74 μg/L (n=19)and 12.72±10.72 μg/L (n=22) respectively. This indicated that among environmental water sources, the ditch iodine content was the highest with river water iodine being the lowest (P<0.01). (3) Soil iodine value was 0.11~2.93 mg/kg (mean of 1.32 mg/kg).Though there was no statistical difference of soil iodine in different districts (P=0.131), soil iodine content correlated positively with water iodine content. Conclusion: Iodine concentration in salt accords with national policy of adding iodine in salt. Foreland has more iodine in water than mountain area. The data reflected that water and soil iodine in foreland area was not high, which suggests universal iodized salt should be necessary. Environment iodine has relatively close association with pollution. 相似文献
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网络三维虚拟实验系统的设计与实现 总被引:1,自引:1,他引:0
根据虚拟现实技术特性,结合代表性的案例,分析网络三维虚拟实验系统的基本构成框架。依据虚拟实验系统的开发流程,以化学虚拟实验《实验室制取气体》的开发为例,介绍了基于Virtools开发网络三维虚拟实验系统的方法和过程。最后,对网络三维虚拟实验系统的开发应用进行了总结与展望。 相似文献
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徐兰 《阜阳师范学院学报(社会科学版)》2001,(5):64-67
民主革命时期毛泽东反腐倡廉的思想主要包括:关于反腐倡廉的重要性、关于反腐倡廉的主要内容等,论述了毛泽东反腐倡廉思想的历史意义和对现实的启迪意义。 相似文献
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The tectonic stress patterns were determined by a fuzzy comprehensive assessment method. Data of in-situ survey and fault information were utilized in the method. First, by making pressure and tension in the directions of along-river, cross-river, shear clockwise, and shear counterclockwise , 26 types of tectonic stress patterns were presented. And the stress vector of each pattern was obtained with FE software by taking unit displacement as boundary load. Then, by taking the 26 types of tectonic stress patterns as index set and 3 main stresses as factor set and choosing various operators, comparison of directions of computational stress vector and survey stress vector was made and the most possible tectonic stress pattern was obtained. Taking the 26 types of tectonic stress patterns as index set and strike angle as factor set, comparison of relationships between formation of fault and tectonic stress was made,and the tectonic stress patterns were assessed with known fault information. By summarizing the above assessment results, the most impossible tectonic stress pattern was obtained . Finally an engineering case was quoted to validate that the method is more feasible and reliable than traditional empirical method. 相似文献
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学生突发事件应急处理探讨 总被引:1,自引:0,他引:1
构建学生突发事件应急处理预案是有效预防、及时控制和消除学生突发事件的危害,保障在校学生身心健康和生命安全,维护正常的校园秩序,营造良好育人环境的有效方法,也是新时期学生工作的重点。本文从对学生突发事件应急处理预案的认识,对学生突发事件的管理原则、预警机制、处理办法做了探索,力求为预防和高效处理学生突发应急事件提供参考。 相似文献