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Equitable Coloring of Complete r-partite Graphs

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Chinese Quarterly Journal of Mathematics 2004年第4期19卷 412-415页

作者： WANG Xiu-mei(Department of Mathematics, zhengzhou University, zhengzhou 450052. china) Department of Mathematics Zhengzhou University Zhengzhou 450052 China

A graph is equitably k-colorable if its vertices can be partitioned into k independent sets of as near equal sizes as possible. In this paper, we determine a sufficient and necessary condition for which a complete r-p... 详细信息

关键词： complete r-partite graph equitably k-colorable equitable chromatic number

ACCURACY ANALYSIS OF 12.PARAMETER RECTANGULAR PLATE ELEMENTS WITH GEOMETRIC SYMMETRY

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Systems Science and Mathematical Sciences 2000年第2期13卷 146-151页

作者： SHI Dongyang CHEN Shaochun (Department of Mathematics, zhengzhou University, zhengzhou 450052. china) 郑州大学数学系河南郑州 450052 郑州大学数学系河南郑州

In this paper, it is proved that the double set parameter rectangular plate elements with geometric symmetry possess a very special convergence property, i.e., the consistency error due to nonconformity is of order O(h2. which is one order higher than that of ACM element and rectangular generalized conforming element proposed by Y. Q. Long, although all these elements have the same asympotical rate of convergence O(h) in the energy norm. This particular property seems to be never seen before for other nonconforming rectangular plate elements.

关键词： Nonconforming rectangular element geometric symmetry special convergence.

EFFECT OF Ti ON MICROSTRUCTURE OF RAPIDLY SOLIDIFIED Al-Si ALLOYS

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Acta Metallurgica Sinica(English Letters) 1992年第4期5卷 292-296页

作者： SHAO Guosheng SHEN Ningfu zhengzhou Institute of Technology,zhengzhou,{2. zhengzhou Inst of Technology Zhengzhou China

An addition of Ti as alloying element to Al-Si binary alloy will reduce the undercooling-abili- ty on rapid solidification of the melt-spun *** microstructure will be encoarsened even at initiation of its solidificati... 详细信息

关键词： rapid solidification Ti Al-Si alloy structure

Enantiomeric Excess Determination of Amino Acids with Chiral Cyclopalladated Ferrocenylimine

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Chinese Chemical Letters 1999年第2期10卷 127-128页

作者： Xiu Ling CUI Yang Jie WU Liang Ru YANG(Department of Chemistry, zhengzhou University, zhengzhou, {2. Department of Chemistry Zhengzhou University Zhengzhou 450052 China

An efficient NMR determination of the enantiomeric excess of the amino acids can be achieved using chloro-bridged dimer R- (+)-{Pd [(eta(5)-C5H5)Fe (eta(5)-C5H3.Me=NAr)] (mu-Cl)}2.(Ar=p-CH3.6H4) (R-1).

关键词： determination e.e% amino acids chiral cyclopalladated ferrocenylimine

Analysis and application of automatic deformation monitoring data for buildings and structures of mining area

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中国有色金属学会会刊：英文版 2011年第S3期21卷 516-522页

作者： XIAO Jie1, 2. 3. ZHANG Jin4 1. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 43.077, {2. 2. Key Laboratory of Dynamic Geodesy, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 43.077, {2. 3. Graduate School of Chinese Academy of Sciences, Beijing 100049, {2. 4. Department of {3. and mapping, Taiyuan University of Technology, Taiyuan 03.02., {2. Institute of Geodesy and Geophysics Chinese Academy of Sciences Wuhan 430077 China Key Laboratory of Dynamic Geodesy Institute of Geodesy and Geophysics Chinese Academy of Sciences Wuhan 430077 China Graduate School of Chinese Academy of Sciences Beijing 100049 China Department of surveying and mapping Taiyuan University of Technology Taiyuan 030024 China

The buildings and structures of mines were monitored automatically using modern surveying technology. Through the analysis of the monitoring data, the deformation characteristics were found out from three aspects containing points, lines and regions, which play an important role in understanding the stable state of buildings and structures. The stability and deformation of monitoring points were analysed, and time-series data of monitoring points were denoised with wavelet analysis and Kalman filtering, and exponent function and periodic function were used to get the ideal deformation trend model of monitoring points. Through calculating the monitoring data obtained, analyzing the deformation trend, and cognizing the deformation regularity, it can better service mine safety production and decision-making.

关键词： wavelet analysis Kalman filtering deformation monitoring data analysis mine

Treatment of membranous Budd-Chiari syndrome: analysis of 480 cases

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Hepatobiliary & Pancreatic Diseases International 2004年第1期3卷 73-76页

作者： Pei-Qin Xu and Xiao-Wei Dang zhengzhou, china Department of General Surgery, First A ffiliated Hospi- tal of zhengzhou University, zhengzhou 450052., china Department of General Surgery First Affiliated Hospital of Zhengzhou University Zhengzhou 450052 China. vl_institute1086@***

BACKGROUND: Budd-Chiari syndrome (BCS) presents a kind of disease resulted from the occlusion of hepatic vein and/or the intrahepatic inferior vena cava. Its different pathological types were proposed. According to our expe- rience , the membranous type takes a large part of it, and we tried to explore the best treatment of membranous BCS through the analysis of 480 cases retrospectively. METHOD: The operative results of 480 patients with mem- branous BCS were analysed retrospectively. RESULTS: Patients after Kimura's finger rupture, inter- ventional treatment and membrane resection were followed up with rates of 84.62., 86.55%, and 87.3.%, respective- ly. The effective rates of the three methods were 61.4%, 91.7%, and 90.4%, respectively, and the recurrence rates of the disease after the 3.procedures were 3..6%, 8.3. and 9.6%, respectively. The long-term effects of interventional treatment and resection were significantly better than those of Kimura' s finger rupture (P <0.05). CONCLUSION: Balloon dilatation is the choice for mem- branous BCS. Patients with extensive lesion, thick mem- brane or recurrence after percutaneous transhepatic angio- graphy should undergo membrane resection.

关键词： hepatic vein thrombosis balloon dilatation vascular surgical procedures Budd-Chiari syndrome

MINIMUM PROFILE OF GRID NETWORKS

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Systems Science and Mathematical Sciences 1994年第1期7卷 56-66页

作者： LIN Yixun YUAN Jinjiang(Department of Mathematics, zhengzhou University, zhengzhou 450052. china)

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ＭＩＮＩＭＵＭＰＲＯＦＩＬＥＯＦＧＲＩＤＮＥＴＷＯＲＫＳ￥ＬＩＮＹｉｘｕｎ；ＹＵＡＮＪｉｎｊｉａｎｇ（ＤｅｐｏｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＺｈｅｎｇｚｈｏｕＵｎｉｖｅｒｓｉｔｙ，Ｚｈｅｎｇｚｈｏｕ４５００５２，Ｃｈｉｎａ）Ａｂｓｔｒａｃｔ...

关键词： Matrix graph profile.

Studies on the Synthesis and Property of A New Podand-armed Calix[4]arene Derivative

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Chinese Chemical Letters 2000年第1期11卷 17-18页

作者： Yan Jun XING Zhi Xian ZHOU Li MA Zhen Wei LU( Chemistry Department, zhengzhou University, zhengzhou {2. Chemistry Department Zhengzhou University Zhengzhou 450052 China

A new ligand 2., 2., 2., 2.-tetrakis[2.(o-methoxyphenoxy)ethoxy]calix[4]arene 3.was synthesized by direct base-strength-driven O-alkylation of calix[4]arene 1. 3.has been used as ionophore for cesium selective PVC mem... 详细信息

关键词： podand-armed calixarene cesium

On the Construction of Regular Orthocryptogroups

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Acta Mathematica Sinica,English Series 2002年第3期18卷 517-530页

作者： Xiang Zhi KONG Department of Mathematics, zhengzhou University. zhengzhou {2. P. R. {3. Department of Mathematics, Qufu Normal University, Qufu 2.3.65. P. R. {3. Department of Mathematics Zhengzhou University Zhengzhou P. R. China Department of Mathematics Qufu Normal University Qufu P. R. China

The aim of this paper is to study regular orthocryptogroups. After obtaining some charac- terizations of such semigroups, we establish the construction theorem of regular orthocryptogroups. As an application, we give the construction theorem of right quasi-normal orthocryptogroups and study homomorphisms between two regular orthocryptogroups.

关键词： Completely regular semigroup Regular band Orthodox Homomorphism Natural partial order