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煤炭加工与综合利用 2006年第5期 74-76页

作者： ZHAO Yue-min,SHEN Li-juan,HE Ya-qun (china university of mining & technology,Xuzhou 221008,Jiangsu,china)

china university of mining technology (CUMT) is a national key university being directed under the Ministry of Education. CUMT has been officially listed as one of the selected university for the national “211 Project”. With the development of over ninety years,CUMT has formed a discipline major system with a priority to engineering,with mining feature,and combined with science,engineering,liberal,management,law,economy and other multiple subjects developed harmoniously. CUMT currently offers 19 colleges,63 undergraduate disciplines,7 state-level key disciplines,and 8 provincial or ministerial-level key disciplines. CUMT offers positions in seven disciplines for “professors specially engaged under the Yangtze River Scholar Prize Program”. CUMT also provides postdoctoral research opportunities in 9 research areas,and has the authority to confer doctoral and master’s degree as a whole field in 5 top-layer disciplines. CUMT yet has the authority to confer doctoral degree in 50 disciplines,master’s degree in 96 disciplines,4 subject fields in major’s degree and 9 post-doctoral research stations. CUMT currently has 2953 staffs,which includes 1495 teaching stuff,five academicians of the Chinese Academy of Engineering,145 supervisors for doctoral graduates,207 professors,and 327 associate professors. There are more than 36,000 students in CUMT Xuzhou campuses.

关键词： The Discipline of Mineral Processing Engineering and the Personnel Training in china university of mining and technology

china university of mining technology

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China University of Mining Technology

A MODIFIED ALGORITHM OF FINDING AN ELEMENT OF CLARKE GENERALIZED GRADIENT FOR A SMOOTH COMPOSITION OF MAX-TYPE FUNCTIONS A MODIFIED ALGORITHM OF FINDING AN ELEMENT OF CLARKE GENERALIZED GRADIENT FOR A SMOOTH COMPOSITION OF MAX-TYPE FUNCTIONS

作者： Zhaishan,Xuzhou,Jiangsu Province,P.R.china (Written by Prof.Hua Anzeng)

One of the key universities in china,china university of mining technology(CUMT),is a comprehensive university composed of engineering(as the main),science,literature and management schools and departments with distin...

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Journal of Computational Mathematics 2000年第5期18卷 513-520页

作者： Yan Gao (Department of Basic Science, china university of mining and technology-Beijing, Beijing 100083, china) （北京）中国矿业大学北京 100083

This paper refers to Clarke generalized gradient for a smooth composition of max-type functions of the form: f(x) = g(x, maxj∈J1 f1j(x),''', maxj∈Jm fmj(x)), where x ∈Rn, Ji, i = 1,''',m are finite index sets, g and fij,j ∈ Ji, i = 1,... )m, are continuously differentiable on Rm+n and Rn, respectively. In a previous paper) we proposed an algorithm of finding an element of Clarke generalized gradient for f, at a point. In that paper, finding an element of Clarke generalized gradient for f, at a point, is implemented by determining the compatibilities of systems of linear inequalities many times. So its computational amount is very expensive. In this paper) we will modify the algorithm to reduce the times that the compatibilities of systems of linear inequalities have to be determined.

关键词： Nonsmooth optimization Clarke generalized gradient Max-type function.

EFFECTS OF RARE EARTH ON METHANE SENSORS ACTIVATION IN CATALYSIS REACTION

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Journal of Wuhan university of technology(Materials Science) 1997年第Z1期12卷 9-13页

作者： Liu Yongjian Zhuang Hong Ou Zechen china university of mining and technology china university of mining and technology

The partial replacement of the noble metal Pt with rare-earth compound and the application of the compound to the inclusion and modification of traditional methane's catalyst used in oxidation reaction has demonstrate... 详细信息

关键词： methane catalysis activation

Environmental benefits of underground coal gasification

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Journal of Environmental Sciences 2002年第2期14卷 284-288页

作者： LIU Shu qin, LIU Jun hua, YU LI (china university of mining & technology, Beijing 100083, china. china university of mining & technology Beijing 100083 Chin

Environmental benefits of underground coal gasification are evaluated. The results showed that through underground coal gasification, gangue discharge is eliminated, sulfur emission is reduced, and the amount of ash, mercury, and tar discharge are decreased. Moreover, effect of underground gasification on underground water is analyzed and CO 2 disposal method is put forward.

关键词： environmental benefits coal underground coal gasification

THE MARKER FOR HYDROCARBON GENERATION OF CLAROVITRINITE UNDER IRRADIATION OF ELECTRON BEAM

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石油勘探与开发 1997年第6期24卷 109-112页

作者： Yu Bing Zhang Jing Yu Jianyong(china university of mining and technology, Jiangsu, 221008)

The resolving power of the traditional coal petrology methods confines the appraisal of the oil-generating potential of vitrinite with submicron and ultramicron structure. Through eIectron microscope analysis ofclarovitrinite from Turpan-Hami basin's Jurassic humic coal, three kinds of ultramicron lipoid inclusions(ultralaminae, ultraexsudatinite, Submicrinite) and two kinds of ultramicropore structure (through-pore, hollow-pore) were detected. It was found that under continuous irradiation of electron beam (6-20 min ), liquidhydrocarbon matter was oparated out from ultralaminae and ground mass of ckarovitrinite, and the separatedamount of hydroprbon trom ultralaminae is more than that from ground mass. Oil film was formed on the surfaceof ground mass and the scattered hollow-pores were connected together, with a lot of remnant-micriniteaccumulated on the pore wall, resulting from hydrocarbon discharge. The experimental results provide straightevidences for the thermal-Chemical behavior of clarovitrinite's hydrocarbon generating. It is believed that theclarovitrinite's oil-generating potential comes from the existence of the ultramicron lipoid inclusions and theassimilation of ultramicron lipoid matter with vitrinite during the coalification based on the melting of someultramicro-lipoid debris and the humic matters during bio-geochemical gelification.

关键词： Jurassic period Humic coal Vitrinite. Microstructure MicrOscopy Oil and gas origin (Turpan-Hami basin) (Eledron beam irradiation)Abtract: The resolving power of the traditional coal petrology methods confines the appraisal of the oil-gene

Study on Biotribological Behavior of the Combined Joint of CoCrMo and UHMWPE/BHA Composite in a Hip Joint Simulator

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Journal of Bionic Engineering 2009年第4期6卷 378-386页

作者： Qingliang Wang, Jinlong Liu, Shirong GeCollege of Materials and Engineering, china university of mining and technology, Xuzhou 221007, P. R. china [a] College of Materials Engineering China University of Mining technology Xuzhou 221007 P. R. China

UHMWPE composites reinforced with Bovine Bone Hydroxyapatite(BHA)in different contents were prepared by heat pressing formation method.A hip joint wear simulator was used to investigate the biotribological behavior of UHMWPE/BHA composite acetabular cups against CoCrMo alloy femoral heads in bovine synovia lubrication at 37±1 ℃.It was found that the addition of BHA powder to UHMWPE can improve the hardness and creep modulus of UHMWPE/BHA composites,and decrease their wear rates under bovine synovia *** the content of BHA filler particles was up to 30 wt%, UHMWPE/BHA composites demonstrated the well design performances of the surface and biotribological ***, ploughing and slight adhesive wear were the main wear mechanisms for UHMWPE and its *** addition,the sizes of wear particles became larger with an increase in BHA powder *** results suggest that BHA filler is a desirable component to increase the wear resistance of UHMWPE/BHA composites for biomedical applications.

关键词： UHMWPE hydroxyapatite biotribology joint prosthesis

Description to wear debris boundaries by radar graph fractal method

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Chinese Science Bulletin 2007年第16期52卷 2285-2290页

作者： LIU HongTao1,2 & GE ShiRong1 1 Institute of Tribology and Reliability Engineering,china university of mining & technology,Xuzhou 221008,china 2 College of Mechanical and Electrical Engineering,china university of mining & technology,Xuzhou 221116,china Institute of Tribology and Reliability Engineering China University of Mining and Technology Xuzhou 221008 China

In this paper,radar graph fractal method is introduced to describe wear debris boundaries. Research results show that it is a nice way to describe wear debris boundaries. Since the longest axis is selected as the first coordinate axis,its center point selected as the center point of the radar graph,and the co-ordinate value of wear debris boundary selected as the measure parameter,the limitations existing in Yard fractal measure method can be avoided. For any wear debris,its radar graph fractal dimension value is one and only,and as the wear debris shape changes from round to strip,the radar graph fractal dimension value also changes from low to high,showing strong uniqueness and independence. Due to the fact that the researched wear debris is gotten in different wear states,the results also prove that radar graph fractal dimension value is correlated with frictional pairs work condition and wear state. Radar graph fractal method is compared with Yard fractal measure methods,and results show that ra-dar graph fractal dimension values gotten from different wear debris have enough value grads to avoid effect of errors,and provide higher sensitivity for wear debris shape. This paper also discusses the influencing factors for radar graph fractal method. With the increase of the decomposing degree value,the radar graph fractal dimension tends to keep stable at one certain value,showing the typical characteristic of the fractal theory. All this proves that radar graph fractal method is an effective description method for wear debris boundaries.

关键词：磨粒边界雷达图表分形法

Effects of Plasma Nitriding on Microstructure and Tribological Properties of CoCrMo Alloy Implant Materials

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Journal of Bionic Engineering 2010年第4期7卷 337-344页

作者： Qingliang Wang,Lei Zhang,Jiandong Dong School of Material Science and Engineering,china university of mining & technology,Xuzhou 221116,P.R.china [a] School of Material Science Engineering China University of Mining & Technology Xuzhou 221116 P. R. China

Medical forged CoCrMo alloy was treated by plasma nitriding *** microstructures were characterized by 3Dprofiler,SEM and *** tribological properties were investigated under lubrication of 25% bovine serum *** that plasma nitriding is a promising process to produce thick,hard,and more wear resistant layers on the surface of *** nitrided samples showed an important increase in the surface hardness due to the formation of harder CrN andCrN phases with compact nano-crystalline *** typical hardness values of HVincreased almost two times thanuntreated *** bovine serum lubrication,at low nitriding temperature the Coefficient of Friction (COF) of nitrided samplewas lower than that of untreated sample,but at high nitriding temperature the COF was almost the same as the untreated *** with the untreated sample,the nitrided samples showed lower wear rates and higher wear resistance under differentnitriding *** adhesive wear is the main mechanism for untreated CoCrMo alloy and the wear mechanisms ofnitrided ones are the fatigue wear and slight adhesive *** is concluded that the improvement of wear resistance is ascribed tothe hard nitride formation of CrN and CrN phases at the nitrided surfaces.

关键词： CoCrMo alloy plasma nitriding microstructure friction and wear

Limit theorem and uniqueness theorem of backward stochastic differential equations

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Science china Mathematics 2006年第10期49卷 1353-1362页

作者： JIANG Long Department of Mathematics, china university of mining and technology, Xuzhou 221008, china Institute of Mathematics, Fudan university, Shanghai 200433, china School of Mathematics and System Sciences, Shandong university, Jinan 250100, china 1. Department of Mathematics China University of Mining and Technology Xuzhou 221008 China 2. Institute of Mathematics Fudan University Shanghai 200433 China 3. School of Mathematics and System Sciences Shandong University Jinan 250100 China

This paper establishes a limit theorem for solutions of backward stochastic differential equations (BSDEs). By this limit theorem, this paper proves that, under the standard assumption g(t,y,0) = 0, the generator g of a BSDE can be uniquely determined by the corresponding g-expectationεg;this paper also proves that if a filtration consistent expectation S can be represented as a g-expectationεg, then the corresponding generator g must be unique.

关键词： backward stochastic differential equation, g-expectation, generator.