武汉城市圈旅游业一体化发展研究

中部崛起战略实施以来,武汉城市圈建设速度突飞猛进,特别是城市圈中旅游资源丰富,开发旅游经济必将成为新的经济增长点.通过对武汉城市圈内各城市的实地调研和资料分析,针对目前城市圈旅游经济存在的问题,提出以政府服务企业为基础、以吸引游客为目的、以完善配套设施为途径的新型旅游发展模式.     

Passivity degradation of nuclear materials in reduced sulfur environments: A review

This paper reviews sulfur-induced passivity degradation of nuclear materials with emphasis on steam generator(SG)alloys. The state of arts on this topic concerning thermodynamic calculation and experimental data has been reviewed. Thermodynamic calculation results indicate that the distribution of sulfur species strongly depends on pH and temperature. Experimental data show that solution pH, temperature and solution chemistries can significantly affect the electrochemical behaviors of SG materials and the underlying degradation mechanisms. Some issues when conducting corrosion tests at high temperature should be paid attention to, such as the dissolution of the autoclave, which may affect the facticity of the experimental results.     

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