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1.
系统分析了Morondava盆地西部侏罗纪断陷盆地构造特征,实可分为东部断陷带、中部断裂构造带和西部侏罗系残留斜坡带,可能存在有断鼻型、背斜型、地层剥蚀尖灭型、断块型、古潜山及岩性圈闭。 相似文献
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Generalized approaches to developing a microwave NDT for flaws inside an arbitrary diameter pipe through optimizing a microwave-exciting probe were investigated. A microwave probe obtained from a parameter-optimizing scheme based on transmission characteristics is proposed. Three-dimensional finite element simulation of five microwave probes indicates that a larger optimization parameter enables reduced microwave reflection, as well as improved single-mode propagation inside the pipe as compared with conventional probes. Experimental verification, using straight brass pipes of various diameters confirmed that the optimized microwave probe exhibits a larger signal-to-noise ratio for internal flaws when compared with conventional probes, thereby validating the new optimization parameter. 相似文献
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The fourth-order partial differential equations have good performance on noise smoothing and edge preservation without creating blocky effects on smooth regions. However, for low signal-to-noise ratio images, the discrimination between edges and noise is a challenging problem. A novel kernel-based fourth-order diffusion is proposed in this paper. It introduces a kernelized gradient operator in the fourth-order diffusion process, which leads to more effective noise removal capability. Experiment results show that this method outperforms several previous anisotropic diffusion methods for noise removal and edge preservation. 相似文献
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经济的不断发展对土地利用提出更高要求,为实现经济的可持续发展,需要增强土地整治工作成效,结合生态景观战略,以科学的举措来最大程度地发挥农村土地整治工作的效果。为此,文章结合我国土地整治生态景观中所出现的问题,提出了有效的建设策略,希望能够进一步协调生态与经济间的关系,实现二者的和谐发展。 相似文献
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结合兴宁至汕尾高速公路海丰至红海湾开发区段一期工程实际,对新旧盖梁拼接施工技术进行总结。通过施工技术的创新有效解决传统拓宽拼接桥梁中新旧结构的连接问题。该技术方案具有较好的经济和社会效益,可推广至类似工程中应用。 相似文献
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Non-thermal plasma(NTP)is regarded as a potential application for environmental pollution control due to its ability to remove pollutants.As a major precursor of dioxins,the influence of the parameters of 1,2,4-trichlorobenzene(TCB)decomposition using NTP technology was investigated through a series of experiments,including voltage,frequency,water content,initial concentration,flow rate,and oxygen content.The experimental results show that the energy injected into the NTP system has a positive correlation to voltage and frequency.Oxygen has the greatest influence on TCB decomposition.The optimal reaction condition was at 15 kV,1000 Hz,an initial concentration of 20 mg m^?3,a flow rate of 2 l min^?1,H2O at 4%,and O2 at 0%.Under this condition,the TCB removal efficiency could reach 92%.According to the generated product backstepping,the hydroxyl radical(·OH)plays an important role in TCB decomposition due to its strong oxidation,which participates in the dechlorination and oxidation reactions as free radicals,and the possible decomposition pathway of TCB by NTP is inferred from the identified byproducts.It is of great significance to investigate the influence of the parameters of TCB decomposition using NTP technology in order to provide references for industrial application. 相似文献
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