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Determination of the Thermal Expansion Coefficient of Concrete at Early Ages by Using Temperature-stress Testing Machine

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Journal of wuhan university of technology(Materials {3.) 2006年第4期21卷 146-149页

作者：霍凯成 hubei key laboratory of Roadway Bridge & {3. Engineering Wuhan University of TechnologyWuhan 430070China

By using the uptodate temperatuer-stress testing machine, the thermal expansion coefficient of concrete at early ages was studied and indicative conclusions were achieved ： temperature rising due to hydration heat is not directly correlated with cracking, but the temperature and stress evolation process should be taken into consideration in the same time. Proper chemical admixtures and mineral cornpasitions can improve the mechanical properties of concrete such as thermal expansion coefficient, which is very indicative in practice.

关键词： concrete coefficient of thermal expansion temperature-stress test

Preparation of Oriented Barium Titanate Thin Films by Combination of Electrophoretic Deposition with Hydrothermal Treatment

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Journal of Materials science & technology 2010年第11期26卷 996-1000页

作者： Lihong Xue and Youwei Yan State key laboratory of Materials Processing and Die and Mould technology,{3. {3. of science and technology,wuhan 43.074,china [a] State key laboratory of Materials Processing and Die and Mould technology huazhong university of science and {3. wuhan 43.074 china

Highly oriented barium titanate （BaTiO 3. thin films on Pt substrate were fabricated by combination of electrophoretic deposition with hydrothermal *** structure and morphology of thin films were characterized by X-ray diffraction and field-emission scanning electron *** is found that the titania precursor film,Ba（OH）2 concentration and hydrothermal temperature play crucial roles in the film morphology and *** BaTiO3.thin films with highly （110） preferred orientation can be formed on polycrystalline Pt substrate by appropriate adjustment of the reaction *** orientation parameter f of highly oriented BaTiO3.films was up to *** films exhibited a smooth and crack-free surface and remained in the layered *** situ topotactic transformation and dissolution-crystallization mechanisms were proposed to explain the morphology and orientation of BaTiO3.films during hydrothermal treatment.

关键词： Barium titanate Preferred orientation Electrophoretic deposition Hydrothermal treatment

Algorithm of graph isomorphism with threedimensional DNA graph structures

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Progress in Natural science:Materials International 2005年第2期15卷 86-89页

作者： LIU Guangwu 1,2*, YIN Zhixiang 1,3. XU Jin1 and DONG Yafei1(1. Department of control science and Engineering, Hua Zhong university of science and technology, wuhan 43.074, china 2. College of Transportation, wuhan university of technology, wuhan 43.063. china 3. Department of Mathematics and Physics, Anhui university of science and technology, Huainan 23.001, china) Department of control science and Engineering Hua Zhong University of Science and Technology Wuhan 430074 China. College of Transportation Wuhan University of Technology Wuhan 430063 China. Department of Mathematics and Physics Anhui University of Science and Technology Huainan 232001 China

An algorithm for solving the graph isomorphism problem with 3.D DNA structures is proposed in this paper. The k-armed branched junction molecules are used to code k-degree vertices. Double stranded molecules are used to code edges. Then the molecules are mixed in a tube to be ligated. The result can be detected by gel electrophoresis. The time complexity of the algorithm is O(n2), where n is the number of vertices of the graph.

关键词： DNA computing DNA graph structure graph isomorphism

Bionic Design and Finite Element Analysis of Elbow in Ice Transportation Cooling System

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Journal of Bionic Engineering 2010年第3期7卷 301-306页

作者： Dejun Miao~(1,2), Xiuhua Sui~3. Linjing Xiao~3.1. key laboratory of Mine Hazard Prevention and control (Ministry of Education,{3.), Shandong {3. of science and technology, Qingdao 266510, P. R.{3. 2. School of Architecture, Tsinghua {3., Beijing 100084, P. R.{3. 3. College of Mechanical and Electronic Engineering, Shandong {3. of science and technology, Qingdao 266510, P. R.{3. [a] key laboratory of Mine Hazard Prevention control (Ministry of Education China) Shandong University of Science technology Qingdao 266510 P. R. China [b] School of Architecture Tsinghua University Beijing 100084 P. R. China [c] College of Mechanical Electronic Engineering Shandong University of Science technology Qingdao 266510 P. R. China

With the increase in mining depth, mine heat harm has appeared to be more prominent. The mine heat harm could be resolvedor reduced by ice refrigeration. Thus, ice transportation through pipeline becomes a critical problem; typically flowresistance occurs in the elbow. In the present study, according to the analysis of the surface morphology of fish scale, abiomimetic functional surface structure for the interior wall of elbow is designed. Based on the theory of liquid-solid two phaseflow, a CFD numerical simulation of ice-water mixture flowing through the elbow is carried out using finite element *** experiments of pressure drop and flow resistance for both bionic and common elbows are conducted to test theeffect of the bionic elbow on flow resistance reduction. It is found that with the increase in the ice mass fraction in the ice-watermixture, the effect of bionic elbow on resistance reduction becomes more obvious.

关键词： bionic elbow two phase flow ice transportation flow resistance reduction pressure loss

Characterization and Crystal structure of a New Holmium(III) Complex with the Macrocyclic Ligand Derived from 2,6-Diformyl-4-methylphenol and Diethylenetriamine

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Chinese Journal of Structural Chemistry 2007年第12期26卷 1429-1434页

作者：胡学雷邱立赵元弟key laboratory of Biomedical Photonics of Ministry of Education - wuhan National laboratory for Optoelectronics - {3. Bioinformatics and Molecular Imaging key laboratory - key laboratory of Molecular Biophysics of the Ministry of Education huazhong university of science and technology 潘志权 key laboratory of Biomedical Photonics of Ministry of Education - wuhan National laboratory for Optoelectronics - {3. Bioinformatics and Molecular Imaging key laboratory - key laboratory of Molecular Biophysics of the Ministry of Education Huazhong University of Science and Technology hubei key laboratory of Novel Chemical Reactor and Green Chemical {3. Wuhan Institute of Technology

The title compound （13.27-dimethyl-3.6,9,17,20,23.hexaazatricyclo-[23.***.1.1^11.15]- triaconta-l（29）,2,9,11,13.15（3.）,16,23.25,27-decaene-29,3.-diol-N^3.N^6,N^9,O^29,O^3.）-bis（nitrato-O,O＇）- holmium（m） nitrate hydrate has been prepared and characterized by elemental analysis, infrared spectra, and electrospray mass spectra. Its crystal and molecular structures were determined by X-ray diffraction methods. The crystal crystallizes in the monoclinic system, space group C2/c with a = 23.73.（12）, b = 14.23.（7）, c = 19.801（10） A, β = 91.3.（1）^o, Mr = 83..57, V = 6690（6） A^3. Z = 8, Dc = 1.651 g/cm^3. F（000） = 3.44, R = 0.0482 and wR = 0.0923. The holmium ion is located in one of the compartments of the macrocyclic ligand and presents a distorted tricapped trigonal prismatic coordination geometry. The macrocycle is coordinated with two oxygen and three nitrogen atoms. Two nitrates are chelated in the opposite positions of the macrocycle, and the third one is ionic.

关键词： crystal structure lanthanide macrocycle

A global heuristically search algorithm for DNA encoding

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Progress in Natural science:Materials International 2007年第6期17卷 745-749页

作者： Zhang Kai, Pan Linqiang and Xu Jin (The key laboratory of Image Processing and Intelligent control, Department of control {3. and Engineering, huazhong university of science and technology, wuhan 43.074, china) [a]The key laboratory of Image Processing and Intelligent control Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan China

A new efficient algorithm is developed to design DNA words with equal length for DNA computing. The algorithm uses a global heuristic optimizing search approach and converts constraints to a carry number to accelerate the convergence, which can generate a DNA words set satisfying some thermodynamic and combinatorial constraints. Based on the algorithm, a software for DNA words design is developed.

关键词： DNA computing encoding heuristic optimizing search

Subsidence control and farmland conservation by solid backfilling mining technology

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中国有色金属学会会刊：英文版 2011年第S3期21卷 665-669页

作者： GUO Guang-li1, 2, FENG Wen-kai3. ZHA Jian-feng1, 2, 3. LIU Yuan-xu1, 2, WANG Qiang1, 2 1. key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping, china {3. of Mining and {3., Xuzhou 221116, china 2. Jiangsu key laboratory of Resources and Environmental Information Engineering, china {3. of Mining and {3., Xuzhou 221116, china 3. State key laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu {3. of {3., Chengdu 610059, china [a] key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping China University of Mining and Technology Xuzhou 221116 China [b] Jiangsu key laboratory of Resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China [c] State key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

Solid backfilling mining technology, which decreases the height of fissure zone and caving zone, and alleviates the subsidence, is a new technology for farmland conservation. Based on the situation analysis of farmland destruction in mining area, three ways for farmland protection were proposed. In order to improve the feasibility of this technology, the limited filling materials should be used to increase resources recovery ratio, and then the surplus materials could be backfilled into goaf. An index, namely farmland conservation ability, was put forward to optimize the ways for farmland conservation. At last, the Wanbei coal mine was taken as a case for farmland conservation. It was shown that 3.40 t dull coal was substituted and 52 hm2 farmland was conserved by solid backfilling mining in this coal mine.

关键词： solid backfilling farmland conservation mining subsidence equivalent mining height

Multi-objective carrier chaotic evolutionary algorithm for DNA sequences design

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Progress in Natural science:Materials International 2007年第12期17卷 1515-1520页

作者： Xiao Jianhua, Xu Jin, Geng Xiutang and Pan Linqiang(key laboratory of Image Processing and Intelligent control, Department of control {3. and Engineering, huazhong university of science and technology, wuhan 43.074, china) key laboratory of Image Processing and Intelligent control Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

DNA computing is a new vista of computation, which is of biochemical type. Since each piece of information is encoded in biological sequences, their design is crucial for successful DNA computation. DNA sequence design is involved with a number of design criteria, which is difficult to be solved by the traditional optimization methods. In this paper, the multi-objective carrier chaotic evolution algorithm (MCCEA) is introduced to solve the DNA sequence design problem. By merging the chaotic search base on power function carrier, a set of good DNA sequences are generated. Furthermore, the simulation results show the efficiency of our method.

关键词： DNA computing carrier chaotic search multi-objective evolutionary algorithm DNA sequences design.

Mining subsidence control by solid backfilling under buildings

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中国有色金属学会会刊：英文版 2011年第S3期21卷 670-674页

作者： ZHA Jian-feng1, 2, 3. GUO Guang-li1, 2, FENG Wen-kai3. WANG Qiang1, 2 1. key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping, china {3. of Mining and {3., Xuzhou 221116, china 2. Jiangsu key laboratory of Resources and Environmental Information Engineering, china {3. of Mining and {3., Xuzhou 221116, china 3. State key laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu {3. of {3., Chengdu 610059, china [a] key laboratory for Land Environment and Disaster Monitoring of the State Bureau of Surveying and Mapping China University of Mining and Technology Xuzhou 221116 China [b] Jiangsu key laboratory of Resources and Environmental Information Engineering China University of Mining and Technology Xuzhou 221116 China [c] State key laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

Solid backfilling mining can reduce the buildings' damage caused by mining greatly. The reduction of subsidence value, the slow advancing speed and the subsidence caused by backfilling body compaction are the main reasons that solid backfilling mining velocity decreases significantly. Based on the research of mechanism, some principles on subsidence control of solid backfilling mining under buildings were proposed. The equivalent mining height was designed according to the fortification criteria of buildings and their attachment structures, which enables the ground movement and deformation caused by mining to be less than the corresponding fortification criteria.

关键词： solid backfilling mining subsidence control mining under buildings