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South China University of fechnology Advanced Metallic Materials Research and Processing Technology Center
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《China Foundry》 SCIE CAS 2004年第S1期67-67,共1页
A dvanced Metallic Materials Research and Processing Technology Center was found in December 1998. As a unit under The College of Mechanical Engineering, the Center is an expansion of the former Cast and Composite Mat... A dvanced Metallic Materials Research and Processing Technology Center was found in December 1998. As a unit under The College of Mechanical Engineering, the Center is an expansion of the former Cast and Composite Materials Research Group, which was found in the early eighties of last century. The Center is focusing in the basic and applied research, and development of advanced metallic materials and their processing technology. It also functions as an organization 展开更多
关键词 South China University of fechnology Advanced metallic Materials Research and Processing technology Center HIGH
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Hydraulic metal structure health diagnosis based on data mining technology 被引量:3
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作者 Guang-ming Yang Xiao Feng Kun Yang 《Water Science and Engineering》 EI CAS CSCD 2015年第2期158-163,共6页
In conjunction with association rules for data mining, the connections between testing indices and strong and weak association rules were determined, and new derivative rules were obtained by further reasoning. Associ... In conjunction with association rules for data mining, the connections between testing indices and strong and weak association rules were determined, and new derivative rules were obtained by further reasoning. Association rules were used to analyze correlation and check consistency between indices. This study shows that the judgment obtained by weak association rules or non-association rules is more accurate and more credible than that obtained by strong association rules. When the testing grades of two indices in the weak association rules are inconsistent, the testing grades of indices are more likely to be erroneous, and the mistakes are often caused by human factors. Clustering data mining technology was used to analyze the reliability of a diagnosis, or to perform health diagnosis directly. Analysis showed that the clustering results are related to the indices selected, and that if the indices selected are more significant, the characteristics of clustering results are also more significant, and the analysis or diagnosis is more credible. The indices and diagnosis analysis function produced by this study provide a necessary theoretical foundation and new ideas for the development of hydraulic metal structure health diagnosis technology. 展开更多
关键词 Hydraulic metal structure Health diagnosis Data mining technology Clustering model Association rule
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Business Invitation in Science and Technology for China Nonferrous Metal Projects
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《China's Foreign Trade》 1997年第9期19-19,共1页
1. The production of high grade ferrite permanent magnet device (Beijing General Research Institute of Metallurgy) 2. Beijing Jinlong Science and Trade Comprehensive Building (A,B) (Beijing General Research Institute ... 1. The production of high grade ferrite permanent magnet device (Beijing General Research Institute of Metallurgy) 2. Beijing Jinlong Science and Trade Comprehensive Building (A,B) (Beijing General Research Institute of Nonferrous Metals) 展开更多
关键词 MET HIGH Business Invitation in Science and technology for China Nonferrous Metal Projects
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Control Approaches to Soil Pollution from Heavy Metals 被引量:2
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作者 Feng Lei Fang Jiangping +1 位作者 Zhang Chengshuo Hu Tengfei 《Meteorological and Environmental Research》 CAS 2015年第2期33-34,38,共3页
With the continuous development of human society and economy and the continuous progress of industrial technology,more and more pollutants are discharged into the natural environment,and soil environment is also affec... With the continuous development of human society and economy and the continuous progress of industrial technology,more and more pollutants are discharged into the natural environment,and soil environment is also affected at the same time. Among pollutants leading to soil pollution,heavy metals have resulted in most serious soil pollution. Here,many control and restoration approaches to soil pollution from heavy metals are proposed,and characteristics and applicable conditions of various methods are compared,so as to provide theoretical references for the control and restoration of soil pollution from heavy metals in future. 展开更多
关键词 Soil Heavy metal pollution Control approach Restoration technology China
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Small Area ROM Design for Embedded Applications
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作者 崔嵬 吴嗣亮 《Journal of Beijing Institute of Technology》 EI CAS 2007年第4期460-464,共5页
The compact full custom layout design of a 16 kbit mask-programmable complementary metal oxide semiconductor (CMOS) read only memory (ROM) with low power dissipation is introduced. By optimizing storage cell size and ... The compact full custom layout design of a 16 kbit mask-programmable complementary metal oxide semiconductor (CMOS) read only memory (ROM) with low power dissipation is introduced. By optimizing storage cell size and peripheral circuit structure, the ROM has a small area of 0.050 mm2 with a power-delay product of 0.011 pJ/bit at +1.8 V. The high packing density and the excellent power-delay product have been achieved by using SMIC 0.18 μm 1P6M CMOS technology. A novel and simple sense amplifier/driver structure is presented which restores the signal full swing efficiently and reduces the signal rising time by 2.4 ns, as well as the memory access time. The ROM has a fast access time of 8.6 ns. As a consequence, the layout design not only can be embedded into microprocessor system as its program memory, but also can be fabricated individually as ROM ASIC. 展开更多
关键词 complementary metal oxide semiconductor (CMOS) technology read only memory (ROM) address decoder sense amplifier
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Energy Absorption Characteristics of a Novel Asymmetric and Rotatable Re-entrant Honeycomb Structure 被引量:1
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作者 Huifeng Xi Jiachu Xu +1 位作者 Shende Cen Shiqing Huang 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2021年第4期550-560,共11页
Based on the symmetric re-entrant honeycomb(S-RH)structure with negative Poisson’s ratios,a novel asymmetric and rotatable re-entrant honeycomb(AR-RH)structure was proposed.Both the S-RH structure and AR-RH structure... Based on the symmetric re-entrant honeycomb(S-RH)structure with negative Poisson’s ratios,a novel asymmetric and rotatable re-entrant honeycomb(AR-RH)structure was proposed.Both the S-RH structure and AR-RH structure were produced by the 3D printing technology.Through experimental test and finite element simulation,the deformation mechanism and energy absorption characteristics of the AR-RH structure and the S-RH structure with negative Poisson’s ratios at different impact velocities were compared.The experimental test and finite element simulation results show that the novel AR-RH structure with negative Poisson’s ratios has stronger energy absorption capacity than the S-RH structure,and it has been verified that the rotatability of AR-RH can indeed absorb energy.Furthermore,the degree of asymmetry of the AR-RH structure was discussed. 展开更多
关键词 Asymmetric and rotatable re-entrant honeycomb structure Dynamic compression Energy absorption characteristics Metal 3D printing technology
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Recovery of rare and precious metals from urban mines —— A review 被引量:5
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作者 Mengmeng Wang Quanyin Tan +1 位作者 Joseph F. Chiang Jinhui Li 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2017年第5期3-19,共17页
Urban mining is essential for continued natural resource extraction. The recovery of rare and precious metals (RPMs) from urban mines has attracted increasing attention from both academic and industrial sectors, bec... Urban mining is essential for continued natural resource extraction. The recovery of rare and precious metals (RPMs) from urban mines has attracted increasing attention from both academic and industrial sectors, because of the broad application and high price of RPMs, and their low content in natural ores. This study summarizes the distribution characteristics of various RPMs in urban mines, and the advantages and shortcomings of various technologies for RPM recovery from urban mines, including both conventional (pyrometallurgical, hydrometallurgical, and biometallurgical processing), and emerging (electrochemical, supereritieal fluid, mechanochemical, and ionic liquids processing) technologies. Mechanical/physical technologies are commonly employed to separate RPMs from nonmetallic components in a pre-treatment process. A pyrometallurgical process is often used tbr RPM recovery, although the expensive equipment required has limited its use in small and medium-sized enterprises. Hydrometallurgical processing is effective and easy to operate, with high selectivity of target metals and high recovery efficiency of RPMs, compared to pyrometallurgy. Biometallurgy, though, has shown the most promise for leaching RPMs from urban mines, because of its low cost and environmental friendliness. Newly developed technologies electrochemical, supercritical fluid, ionic liquid, and mechanochemical have offered new choices and achieved some success in laboratory experiments, especially as efficient and environmentally friendly methods of recycling RPMs. With continuing advances in science and technology, more technologies will no doubt be developed in this field, and be able to contribute to the sustainability of RPM mining. 展开更多
关键词 Rare and precious metals (RPMs) Distribution characteristics Recycling technology Emerging technology Supercritical fluid
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