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Science china(Technological Sciences) 2010年第3期53卷 878-880页

作者： CHEN ZeShao 1,MO SongPing 1,2 &HU Peng 1 1Department of Thermal Science and energy Engineering,university of Science and technology of china,Hefei 230027,china 2 faculty of Material and energy,guangdong university of technology,guangzhou 510006,china 1. Department of Thermal Science and energy Engineering University of Science and Technology of China Hefei 230027 China2. Faculty of Material and Energy Guangdong University of Technology Guangzhou 510006 China

Two counterexamples in Liu's comment on'Recent Progress in Thermodynamics of Radiation—Exergy of radiation,effective temperature of photon and entropy constant of photon'are analyzed and the incorrect applications of the related concepts are *** similarities and differences between the concepts of the effective temperature of photon,the exergy of spectral radiation,the entropy constant of photon and the macroscopic concepts of temperature,exergy,and entropy are further *** duality of radiant energy,micro-state quantum characteristic and macro-state thermal characteristic is presented.

关键词： thermodynamics of radiation photon entropy

Analysis on the Microstructure and Performance Evolvement of Alloyed Tool Steel Hot Rolling Strip Produced by CSP technology

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Journal of Iron and Steel Research International 2011年第S1期18卷 621-624页

作者： CHEN Jing-hu 1,2,JIE Xiao-hua 1 (1.faculty of Materials and energy,guangdong university of technology,guangzhou{4.,guangdong,china 2.technology Center of guangzhou Steel Group Co Ltd.,guangzhou510380,guangdong,china) guangdong Univ Technol Fac Mat & Energy Guangzhou 510006 Guangdong Peoples R China guangzhou Steel Grp Co Ltd Ctr Technol Guangzhou 510380 Guangdong Peoples R China

This thesis determinates the microstructure and inclusions of the alloyed tool steel by CSP processing with the help of *** results show that the slab microstructures are the fine branched crystalline grains and the branch width has little disparity from the surface to the central *** the product,the grain microstructures are fine pearlites and few ferrites with the pearlite space 0.4.m to 0.2μm.

关键词： compact strip production alloyed tool steel microstructure grain

Theoretical analysis of polarization properties for tilted fiber Bragg gratings

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Science china(Information Sciences) 2010年第2期53卷 390-397页

作者： XU Ou 1 , LU ShaoHua 2 & JIAN ShuiSheng 2 1 faculty of Information Engineering, guangdong university of technology, guangzhou 510006, china 2 Institute of Lightwave {4., Beijing Jiaotong university, Beijing 10004., china 1. faculty of Information Engineering Guangdong University of Technology Guangzhou 510006 China2. Institute of Lightwave Technology Beijing Jiaotong University Beijing 100044 China

The polarization properties for tilted fiber Bragg gratings (TFBGs) are investigated theoretically based on coupled-mode theory and Mueller matrix method. The expression of wavelength-related polarizationdependent loss (PDL) for TFBGs with different tilt angles is derived and calculated. Simulation results are compared, and the results indicate that the polarization capability of TFBGs with 4.° angle is stronger than other TFBGs with smaller angles. The degree of polarization for unpolarized light passing TFBGs is also simulated to further evaluate the polarization properties for various tilt angles. In addition, the relationship between physical parameters of a TFBG and its polarization capability is discussed.

关键词： coupled-mode theory degree of polarization (DOP) Mueller matrix method polarization dependent loss (PDL) tilted fiber Bragg gratings

ARTIFICIAL NEURAL NETWORK AND FUZZY LOGIC CONTROLLER FOR GTAW MODELING AND CONTROL

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Chinese Journal of Mechanical Engineering 2002年第1期15卷 53-56页

作者： Gao Xiangdong faculty of Mechanical and Electrical Engineering，guangdong university of technology， guangzhou 510090，china Huang Shisheng South china university of technology faculty of Mechanical and Electrical Engineering Guangdong University of Technology Guangzhou 510090 China

An artificial neural network(ANN) and a self-adjusting fuzzy logiccontroller(FLC) for modeling and control of gas tungsten arc welding(GTAW) process are *** discussion is mainly focused on the modeling and control of the weld pool depth with ANN and theintelligent control for weld seam tracking with FLC. The proposed neural network can produce highlycomplex nonlinear multi-variable model of the GTAW process that offers the accurate prediction ofwelding penetration depth. A self-adjusting fuzzy controller used for seam tracking adjusts thecontrol parameters on-line automatically according to the tracking errors so that the torch positioncan be controlled accurately.

关键词： Artificial neural network Fuzzy logic control Weld pool depth Seamtracking

Lithium intercalation/de-intercalation behavior of a composite Sn/C thin film fabricated by magnetron sputtering

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Rare Metals 2008年第5期27卷 507-512页

作者： ZHAO Lingzhi HU Shejun LI Weishan LI Liming HOU Xianhua Department of Chemistry South China Normal UniversiO guangzhou 510006 China faculty of Material and energy Guangdong University of Technology Guangzhou 510006 China Key Lab of technology on Electrochemical energy Storage and Power Generation in guangdong Universities Guangzhou 510006 China Department of Mathernatics and Physics Wuyi University Jiangmen 529020 China

A tin film of 320 nm in thickness on Cu foil and its composite film with graphite of-50 nm in thickness on it were fabricated by magnetron sputtering. The surface morphology, composition, surface distributions of alloy elements, and lithium intercalation/de-intercalation behaviors of the fabricated films were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, electron probe microanalyzer （EPMA）, X-ray photoelectron spectroscopy （XPS）, inductively coupled plasma atomic emission spectrometry （ICP）, cyclic voltammetry （CV）, and galvanostatic charge/discharge （GC） measurements. It is found that the lithium intercalation/de-intercalation behavior of the Sn film can be significantly improved by its composite with graphite. With cycling, the discharge capacity of the Sn film without composite changes from 570 mAh/g of the 2nd cycle to 270 mAh/g of the 20th cycle, and its efficiency for the discharge and charge is between 90% and 95%. Nevertheless, the discharge capacity of the composite Sn/C film changes from 575 mAh/g of the 2nd cycle to 515 mAh/g of the 20th cycle, and its efficiency for the discharge and charge is between 95% and 100%. The performance improvement of tin by its composite with graphite is ascribed to the retardation of the bulk tin cracking from volume change during lithium intercalation and de-intercalation, which leads to the pulverization of tin.

关键词： lithium-ion battery anode magnetron sputtering composite film lithium intercalation/de-intercalation

Transport network and flow mechanism of shallow ore-bearing magma in Tongling ore cluster area

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Science china Earth Sciences 2006年第4期49卷 397-407页

作者： DENG Jun1,2, WANG Qingfei1,2 , HUANG Dinghua3 , WAN Li4. YANG Liqiang1,2 & GAO Bangfei1,2 1. State Key Laboratory of Geological Processes and Mineral Resources, china university of Geosciences, Beijing 100083, china 2. Key Laboratory of Lithosphere Tectonics and Lithoprobing technology of Ministry of Education, china university of Geo- sciences, Beijing 100083, china 3. faculty of Earth Sciences, china university of Geosciences, Wuhan 4.0074. china 4. School of Mathematics and Information Science, guangzhou university, guangzhou 5104.5, china 1. State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 China 2. Key Laboratory of Lithosphere Tectonics and Lithoprobing technology of Ministry of Education China University of Geosciences Beijing 100083 China 3. faculty of Earth Sciences China University of Geosciences Wuhan 430074 China 4. School of Mathematics and Information Science Guangzhou University Guangzhou 510405 China

Abundant studies revealed that shallow intrusions of the Yanshanian epoch resulted in the mass mineralization of the Tongling region. Various evidences showed there existed a concealed magma chamber at ?10 km depth in the middle part of this region during Yanshanian epoch, from which the ore-forming magma was generated and then transported to the superficial layer. Yet the transport network and flow mechanism of the shallow ore-bearing magma, the key problem associ- ated with ore-forming process, was relatively little focused on. Integrate analysis of structural me- chanics, statistical fractal and geological facts suggested that NE trending high-angle fold-related thrust faults and the tessellated basement ones served as the main pathways for the shallow magma’s transporting, moreover, the saddle void spaces among adjacent strata in the folds upon this fault system provided the place for magma’s emplacement. So the folds in the upper part and faults in the lower part of the upper crust constituted the fluid’s transport and emplacement network. During the deformation of geologic body with multi-layer structure, the layers in the upper part tended to fold when received the jacking stress from the lower part, while the lower one inclined to fault undergoing loads of the upper part. And the producing probability of this structure assemblage was highly in- creased in the condition, such as in the Tongling area, that the mechanic rigidity of the lower layers was stronger than that of the upper ones. For the pre-existence of fluid-conducting network, the top magma with high volatile in the magma chamber transported rapidly to the superficial layer in dyking pattern, located in the void spaces of folds, filled and reconstructed them. The sudden drop of pres- sure caused the fluid unmixing from the magma and mass ore-forming elements concentration. Pulse activity of the dyking may be the principal reason why magmatic bodies in the Tongling area were spatially-temporally con

关键词： Tongling, structural network, magma intrusion, fractal, dyke.

Synthesis and Characterization of a Novel pH-sensitive Complex for Drug Release

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Journal of Wuhan university of technology(Materials Science) 2010年第1期25卷 24-27页

作者：许东颖李光吉 Department of Polymer Science and Engineering South China University of Technology

A novel pH-sensitive complex was prepared by using oxidized konjac glucomannan and 4.aminosalicylic acid （4.ASA） through glutaraldehyde as a cross-linking agent. The product was characterized by FTIR and 13C NMR spectra, and the thermogravimetric analysis was also studied. The drug release studies in vitro showed that the amount of 4.ASA released from the complex was about 4., 56% and 17% after 12 h at pH 1.2, 6.8 and 7.4. respectively. The data demonstrate that the rate of the drug release of the complex can be more effectively controlled by pH value. The results showed that the novel pH-sensitive complex could be potentially useful for colon-targeting drug delivery system.

关键词： konjac glucomannan pH-sensitivity drug release

Experimental study of ore gabbro liquid immiscibility

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Science china Earth Sciences 2005年第4期48卷 496-505页

作者： SANG Zunan1,2, XIA Bin1, ZHOU Yongsheng3 & JIN Zhenmin4.1. guangzhou Institute of Geochemistry, Chinese Academy of Sciences, guangzhou 51064., china 2. Wuhan university, Wuhan 4.0072, china 3. Institute of Geology, china Seismological Bureau, Beijing 100029, china 4. faculty of Earth Sciences, china university of Geosciences, Wuhan 4.0074. china 1. guangzhou Institute of Geochemistry Chinese Academy of Sciences 510640 Guangzhou China 2. Wuhan university 430072 Wuhan China 3. Institute of Geology China Seismological Bureau 100029 Beijing China 4. faculty of Earth Sciences China University of Geosciences 430074 Wuhan China

In this paper, the authors present the results of a preliminary experimental study on partial melting of fine-grained gabbro, Panzhihua, Sichuan Province, china. Experiments were conducted under (confining) pressure ranging from 4.0 to 500 MPa and temperature of 900— 1200℃. The results show that the initial melt is distributed along grain boundaries and triple junctions. Liquid immiscibility phenomena are noted in the melt with two compositional different melt phases, i.e. matrix and sphere phases. The matrix phase is relatively rich in Si, Al and K, and is depleted in Mg, Fe, Ca, Na and Ti, whereas the sphere phase shows opposite trends. The calculation of the melt free energy indicates that the liquid immiscibility is governed by the rule of thermodynamics, as the liquid immiscibility would result in the decrease in free energy of the melt system. The field relationships suggest that the liquid immiscibility may have played an important role in the generation of ore magma of Panzhihua V-Ti magnetite ore deposit. This study thus provides experimental constraints on the mechanism of the formation of V-Ti magnetite deposite.

关键词： partial melting, experimental study, gabbro, liquid immiscibility, ore formation mechanism.

Effects of rare-earth elements on the glass-forming ability and mechanical properties of Cu_(4.)Zr_(4.-x)Al_7M_x(M = Ce,Pr,Tb,and Gd) bulk metallic glasses

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Rare Metals 2010年第5期29卷 444-450页

作者： XIE Zhiwei ZHANG Yongzhang YANG Yuanzheng CHEN Xianzhao TAO Pingjun faculty of Material and energy Guangdong University of Technology Guangzhou 510006 China

Cu4.Zr4.-xA17Mx （M = Ce, Pr, Tb, and Gd） bulk metallic glassy （BMG） alloys were prepared by copper-mold vacuum suction casting. The effects of rare-earth elements on the glass-forming ability （GFA）, thermal stability, and mechanical properties of Cu4.Zr4.-xA17Mx were investigated. The GFA of Cu4.Zr4.-xA17Mx （M = Ce, Pr） alloys is dependent on the content of Ce and Pr, and the optimal content is 4.at.%. Cu4.Zr4.-xA17Thx（X = 2, 4. and 5） amorphous alloys with a diameter of 5 mm can be prepared. The GFA of Cu4.Zr4.-xA17Gdx（x = 2, 4. and 5） increases with increasing Gd. Tx and Tp of all decrease. Tg is dependent on the rare-earth element and its content. ATx for most of these alloys decreases except the Cu4.Zra2Al7Gd5 alloy. The activation energies △Eg, △Ex, and △Ep for the Cu4.Zr4.A17Gd5 BMG alloy with Kissinger equations are 34..7, 211.3, and 211.3 kJ/mol, respectively. These values with Ozawa equations are 334.8, 210.3, and 210.3 kJ/mol, respec- tively. The Cu4.Zr4.Al7Tb2 alloy presents the highest microhardness, Hv 590, while the Cu4.Zr4.A17Pr4.alloy presents the least, Hv 4.9. The compressive strength （at.f.） of the Cu4.Zra3A17Gd4.BMG alloy is higher than that of the Cu4.Zr4.Al7Tb4.BMG alloy.

关键词： amorphous materials metallic glass rare-earth elements suction casting glass-forming ability mechanical property

土壤源热泵制冷间歇工况土壤温度响应实验研究

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太阳能学报 2009年第10期30卷 1373-1377页

作者：陈颖杨敏史保新广东工业大学材料与能源学院广州510006

在夏热冬暖的广州地区搭建了两种换热器向土壤放热的实验台,换热器埋地深度为30m,实验元件有单U和双U两种型式。连续制冷工况下,通过对两口井内土壤温度变化的研究,结果发现,开机12h后,土壤温度趋于稳定;停机12h后两个埋地换热管处的土... 详细信息

在夏热冬暖的广州地区搭建了两种换热器向土壤放热的实验台,换热器埋地深度为30m,实验元件有单U和双U两种型式。连续制冷工况下,通过对两口井内土壤温度变化的研究,结果发现,开机12h后,土壤温度趋于稳定;停机12h后两个埋地换热管处的土壤温度就可恢复约95%,但土壤温度基本得以恢复需要停机81h。在停机12h后地温恢复得极其缓慢,已没有工程应用价值。可见合理选择运行与停机时间有助于提升系统的整体换热能力和地热的综合利用率。通过实验研究发现,间歇工况下双U井单位井深换热量较之连续运行提高了25.6%,单U井单位井深换热量提高了21.8%。

关键词：土壤源热泵间歇工况双u 单u 温度响应