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Conceptual design,data model and key techniques of“3D Assistant”

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中国有色金属学会会刊：英文版 2011年第S3期21卷 692-698页

作者： LI Qing-yuan1, ZHANG Xuan2. JIN Yang2. ZHOU Hui3, WANG Qian-jin3,WEI Zhan-yin1 1. Key Laboratory of Geo-Informatics, Chinese Academy of Surveying and Mapping, Beijing 100830, china 2. school of Geo-{2. and Surveying Engineering, china university of Mining and technology, Beijing 100083, china 3. school of Geomatics, Liaoning Technical university, Fuxin 12.000, china [a] Key Laboratory of Geo-Informatics Chinese Academy of Surveying and Mapping Beijing 100830 China [b] school of Geo-science and Surveying Engineering China University of Mining and Technology Beijing 100083 China [c] school of Geomatics Liaoning Technical University Fuxin 123000 China

Conceptual design, data model and key techniques of "Geo-engineer 3D assistant", an underground 3D GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in geological modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3D modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of IS 19107 (Geographic information spatial schema), 3D underground topology was re-examined.

关键词： 3D assistant true 3D GIS fine expression of surface contour mode 3D topology

Calculating Model of Mass Action Concentrations for Mn-C Melts and Optimization of Thermodynamic Parameters

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International Journal of Minerals,Metallurgy and Materials 1998年第4期12卷 208-211页

作者： Jian Zhang(Metallurgy school, university of {2. and technology Beijing, Beijing 100083, china) Metallurgy school University of Science and Technology Beijing Beijing 100083 China

Based on the phase diagram, the coexistence theory of the metallic melt structure involving compoundformation and the regularity of melts containing saturated phase, a calculating model of mass action concentrationsfor Mn-C melts was formulated. According to the activities (or activity coefficients AM. and γc.), obtained by theUnified Interaction Parameter Model (UIPM), the thermodynamic parameters G and G at higher temperatures (162.～1873 K) were optimized by the repeated try and error method. It is testified that G G(873～12.3 K) and G (2.8～162. K), obtained at lower temperatures, can also be used at the above-mentionedhigher temperatures. The calculated N. and N agree well with ac. and ac obtained by UIPM. This result showsthat the deduced model can reflect the structural reality of Mn-C melts.

关键词： Mn-C melts activity coexistence theory mass action concentration

A Back Look on the Binary Phase Diagrams of Metals from the Mass Action Law and the Coexistence Theory of Metallic Melts

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Journal of university of science and {2. Beijing 2001年第1期8卷 15-19页

作者： Jian Zhang Metallurgy school, university of {2. and technology Beijing, Beijing 100083, china Univ Sci & Technol Beijing Met Sch Beijing 100083 Peoples R China

According to the mass action law and the coexistence theory of metallic melts, the mass action concentrations of Cu-Mg, Bi-Tl and Ni-Al melts involving compound formation have been calculated. The calculated results show that, except the ultimate case of pure element, when two elements are present in the melts, all structural units (atoms and molecules) without exception will be present in the melts, i.e., their concentrations may change from great to small, but they will not vanish into nothing, and only under such conditions, the calculated results both agree with practice and obey the law of mass action. In view of that over considerable wide composition range, the activities of both elements of the three solid binary alloys mentioned above have been measured, this seems in contradiction with the present relevant phase diagrams, in which the structural units are determined by composition range, so the latter needs further investigation and consideration.

关键词： activity phase diagram the mass action law the coexistence theory

Allocation of power generating and shipping of Hanjiang upstream cascade

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Progress in Natural science:Materials International 2005年第8期15卷 733-741页

作者： LIU Junping1* and CHANG Mingqi 2.3(1. school of Civil Engineering and Architecture, Zhejiang university of {2., Hangzhou 310014, china 2. Institute of Water Resources & Hydroelectric Engineering, Xi'an university of {2., Xi'an 710048, china 3. Shanxi Institute of Water Resources, Taiyuan 030001, china) school of Civil Engineering and Architecture Zhejiang University of Technology Hangzhou 310014 China Institute of Water Resources and Hydroelectric Engineering Xi'an University of Technology Xi'an 710048 China Shanxi Institute of Water Resources Taiyuan 030001 China

The optimal model and simulating model of the Hanjiang cascade reservoirs operation with one day as its calculating period are established to coordinate the contradictions between power generating and shipping. The optimal model is solved by progressive optimality algorithm method adopting the theory of large system decomposing and coordinating. By analyzing the water allocation results obtained from six schemes, which are two cascades, four cascades and seven cascades joint operation considering shipping or not, the contradiction degree between power generating and shipping is investigated and some joint operation schemes are proposed.

关键词： cascade power generating contradiction shipping optimal operation.

Finite groups in which elements of the same order outside the center are conjugate

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science china Mathematics 2007年第10期50卷 1493-1500页

作者： Xing-zhong YOU~1 Guo-hua QIAN~2.Wu-jie SHI~(3+) ~1 school of Mathematics and Computing science,Changsha {2. of science and technology,Changsha 410076,china ~2.Department of Mathematics,Changshu Institute of technology,Changshu 2.5500,china ~3 school of Mathematics,Suzhou {2.,Suzhou 2.5006,china 1. school of Mathematics and Computing science Changsha University of Science and Technology Changsha 410076 China 2. Department of Mathematics Changshu Institute of Technology Changshu 215500 China 3. school of Mathematics Suzhou University Suzhou 215006 China

We prove that if G is a finite group in which the elements of the same order outside the center are conjugate, then either G is abelian or G ≌ S3.

关键词： finite group, rational group, conjugacy class

Alterations in circadian rhythms of melaton in and cortisol in patients with bronchial asthma

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Acta Pharmacologica Sinica 2004年第5期25卷 109-114页

作者： Guang-he FEI2.3, Rong-yu LIU3,4, Zhi-hong ZHANG3, Jiang-ning ZHOU2.32.0} of Life science, {2. of science and technology of china, Hefei 2.002., china 3Pulmonary Department, First Affiliated Hospital, Anhui Medical {2., Hefei 2.002., china school of Life science University of Science and Technology of China Hefei 230026 China

AIM: To investigate the possible relationships between alterations in circadian rhythm of melatonin, cortisol andbronchial asthma. METHODS: Salivary melatonin and cortisol were measured simultaneously by radioimmunoas-say in 10 mild intermittent or persistent patients, 11 moderate-to-severe persistent asthma patients, and 15 controlsubjects. Twelve salivary samples were collected in a series during a 2.-h period in each subject. RESULTS: Theresults showed overall lower levels of salivary melatonin in asthma patients compared with control subject(P2.-h mean level of salivary cortisol was greatly lower and the acrophase was markedly delayedin patients with mild intermittent or persistent asthma (P<0.01) and moderate-to-severe persistent asthma (P<0.05, P<0.01) compared with control subject. CONCLUSION: Disordered circadian rhythms of salivary melato-nin and cortisol were found in asthma patients, which may be involved in the pathogenesis of bronchial asthma.

关键词： melatonin asthma circadian rhythm glucocorticoids human saliva

Calculating Models of Mass Action Concentrations for Ni-Mn and Co-Mn Melts and Optimization of Their Thermodynamic Parameters

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International Journal of Minerals,Metallurgy and Materials 2000年第4期14卷 246-250页

作者： Jian Zhang (Metallurgy school, university of {2. and technology Beijing, Beijing 100083, china) Metallurgy school University of Science and Technology Beijing Beijing 100083 China

According to phase diagrams, measured activities as well as the coexistence theory of motallic melts structure involving compound formation, the calculating models of mass action concentrations for Ni-Mn and Co-Mn melts are formulated and their thermodynamic parameters are optimized. As a result, the calculated mass action concentrations agree well with the corresponding measured activities, showing that these models can reflect the structural characteristics of both Ni-Mn and Co-Mn melts.

关键词： activity metallic melts coexistence theory mass action concentration

Bell violation for the thermal states of an XXZ spin chain with Dzialoshiski-Moriya interaction

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science china(Physics,Mechanics & Astronomy) 2010年第11期53卷 2074-2079页

作者： MA XiaoSan 1 & WANG AnMin 2.1 school of Electric Engineering and Information,Anhui university of {2.,Maanshan 2.3002.china 2.Department of Modern Physics,university of science and {2. of china,Hefei 2.002.,china 1. school of Electric Engineering and Information Anhui University of Technology Maanshan 243002 China2. Department of Modern Physics University of Science and Technology of China Hefei 230026 China

The effect of Dzialoshiski-Moriya (DM) interaction on the violation of Bell inequality for thermal states of interacting qubits via a two-qubit XXZ spin chain is *** results imply that the DM interaction and anisotropy taking a large positive value can enhance the Bell violation and improve the threshold temperatures of *** the comparison between the Bell violation and thermal entanglement,we find that the threshold temperatures of thermal entanglement are higher than those of the Bell *** implies that some states are entangled but the Bell inequality is not violated.

关键词： Bell violation threshold temperatures DM interaction

Intermetallics and phase transformations of the Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr alloy

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Rare Metals 2008年第5期27卷 468-472页

作者： LIANG Jianlie TANG Yiyuan NONG Liangqin YAN Jialin ZHUANG Yinghong Key Laboratory of the Ministry of Education of china for Nonferrous Metals and New Processing technology of Materials Guangxi University Nanning 530004 China school of Physics and Electronic Engineering Guangxi University for Nationalities Nanning 530006 China Institute of Materials sciences Guangxi University Nanning 530004 China

Intermetallics and phase transformations of the zirconium-based alloy, Zr-1.0Sn-0.3Nb-0.3Fe-0.1Cr, were investigated by conventional X-ray diffraction （XRD）, differential scanning calorimetry （DSC）, and dilation measurement. Three types of precipitates, namely, （ZrNb）2.e, Zr（CrFe）2. and Zr3Fe, were detected by XRD. The cubic Ti2.i-type （ZrNb）2.e was found to be the main precipitate in the alloy, and it was proposed to dissolve at 861℃, whereas Zr3Fe dissolved at 780℃ and Zr（CrFe）2.at 814℃. No precipitates were observed at a temperature higher than 900℃. The transformation-start temperature of α-Zr → β-Zr was reconfirmed to be 780℃, and the end temperature of α-Zr →βZr was determined to be 955℃. The dilation result also revealed that the martensitic transformation-start temperature, Ms, and the finish temperature, Mf, of this alloy were 741℃ and 645℃, respectively.

关键词： phase transformation intermetallics X-ray diffraction zirconium-based alloy