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Preparation, characterization, viscosity and thermal conductivity of CaCO_3 aqueous nanofluids

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science China(Technological sciences) 2010年第2期53卷 360-368页

作者： ZHU HaiTao1, LI ChangJiang2, WU DaXiong1, ZHANG CanYing1 & YIN YanSheng2 1 college of Materials science and Engineering, Qingdao University of science and Technology, Qingdao 266042, China 2 Department of Materials, Ocean University of China, Qingdao 266003, China 1. college of Materials science and Engineering Qingdao University of Science and Technology Qingdao 266042 China2. Department of Materials Ocean University of China Qingdao 266003 China

CaCO3 aqueous nanofluids were prepared by dispensing aqueous CaCO3 paste into distilled water under ultrasonic vibration. The actual microstructures of the CaCO3 nanofluids with different particle volume fractions were characterized by freeze etching replication transmission electron microscopy (FERTEM). Thermal conductivity and rheological behavior of the nanofluids were measured by standard analyzers. The results show that CaCO3 paste as raw material for nanofluids is advantageous to reducing aggregation of primary nanoparticles. The effective viscosities and effective thermal conductivities of the CaCO3 nanofluids are related to the aggregates of nanoparticles and can be well predicted by the modified Krieger & Dougherty formula and the modified Hamilton & Crosser model, respectively.

关键词： CaCO3 nanofluid thermal conductivity viscosity microstructure

Relationship between surface subsidence factor and mining depth of strip pillar mining

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中国有色金属学会会刊：英文版 2011年第S3期21卷 594-598页

作者： GUO Wen-bing1, 2, HOU Quan-lin 1, ZOU You-feng2 1. college of Earth science, Graduate University of Chinese Academy of sciences, Beijing 100049, China 2. School of Energy science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China Chinese Acad Sci Coll Earth Sci Grad Univ Beijing 100049 Peoples R China Henan Polytech Univ Sch Energy Sci & Engn Jiaozuo 454000 Peoples R China

Strip pillar mining is one of the most important technical measures to control mining subsidence in China. Mining depth is one of the most important factors that can affect the mining subsidence in strip pillar mining. Six numerical simulation models were set up to simulate the surface subsidence of strip pillar mining in different mining depths. The mining depth in these six models ranges from 300 to 800 m. The simulated results were compared and analyzed. The formula was established based on the simulated results. It demonstrated that the subsidence of strip pillar mining method is related to mining depth. While the other conditions are the same, the subsidence of strip pillar mining increases with the increase of mining depth by logarithmic relationship.

关键词： subsidence factor strip pillar mining mining depth numerical simulation

Investigation of thermoluminescence in Li_2B_4O_7 phosphors doped with Cu, Ag and Mg

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science China(Physics,Mechanics & Astronomy) 2007年第3期50卷 311-320页

作者： XIONG ZhengYe1,2, TANG Qiang2 & ZHANG ChunXiang2 1 college of science, Guangdong Ocean University, Zhanjiang 524088, China 2 School of Physics science and Engineering, Sun Yat-sen University, Guangzhou 510275, China 1. college of science Guangdong Ocean University Zhanjiang 524088 China 2. School of Physics science and Engineering Sun Yat-sen University Guangzhou 510275 China

Li2B4O7 （LBO）:Cu,Ag,Mg phosphors have been prepared by the sintering technique. The roles of the Ag and Mg dopants in the phosphors have been studied using the methods of thermoluminescence （TL） glow curves and TL 3D spectra. The results indicated that proper concentrations of Ag and Mg can enhance the TL of LBO:Cu. It was also indicated that the intensity of TL peak at 130℃ is reduced with the in- creasing Ag concentration, and enhanced with the increasing Mg concentration. From the TL 3D spectra, three emission bands （λ1 = 421 nm, λ2 = 380 nm, λ3 = 350 nm） were observed: the intensity of low energy emission band is reduced and that of the high energy is enhanced with the increasing dopant Ag; on the contrary, the intensity of low energy emission band is enhanced and that of the high energy one is reduced with the increasing dopant Mg.

关键词： thermoluminescence spectra borate lithium

Internal relative humidity and creep of concrete with modified admixtures

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Progress in Natural science:Materials International 2011年第5期21卷 426-432页

作者： Zhi-hai HE~(1,2),Chun-xiang QIAN~(1,2) 1.college of Materials science and Engineering,Southeast University,Nanjing 211189,China 2.Jiangsu Key Lab of Construction Materials,Nanjing 211189,China [a] college of Materials science and Engineering Southeast University Nanjing 211189 China [b] Jiangsu Key Lab of Construction Materials Nanjing 211189 China

The creep characteristics and internal relative humidity(IRH) of concrete with shrinkage reducing admixtures(SRA),poly vinyl alcohol fiber(PVAF) and a mixture of fly ash and slag(MFS) were investigated by the self-made loading *** pore structure was tested,and the relationship of creep and IRH of concrete was *** results indicate that MFS and SRA reduce the total creep and delay the change of ***,the effect of PVAF is contrary,relative to MFS and *** total creep depends largely on drying *** basic creep of concrete is similar,which is significantly influenced by volume fraction of pores whose diameter is between 3.5 nm and 50 nm to the total pore(VP),and IRH of concrete is connected with *** is easy to obtain a good linear relationship predicting the creep of concrete according to the change of IRH.

关键词： modified admixture internal relative humidity total creep drying creep basic creep porosity

Nuclear Magnetic Resonance Studies on Huwentoxin-Ⅺ from the Chinese Bird Spider Ornithoctonus huwena:15N Labeling and Sequence-specific 1H,15N Nuclear Magnetic Resonance Assignments

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Acta Biochimica et Biophysica Sinica 2006年第7期 457-466页

作者： Kuan PENG~1 Ying LIN~1 Song-Ping LIANG~(1,2*) 1 college of Life science,Peking University,Beijing 100871,China 2 college of Life science,Hunan Normal University,Changsha 410081,China

Huwentoxin-XI purified from the Chinese bird spider Ornithoctonus huwena is a toxin withboth antiprotease activity and potassium channel blocking *** determine its solution structure,huwentoxin-Ⅺ was expressed in a yeast eukaryotic expression system and studied by ***15N labelingstrategy was used to facilitate the process of resonance *** nearly complete sequence-specificassignments of proton and nitrogen resonances were obtained by analyzing a series of two-dimensional（2D）and three-dimensional（3D）spectra,including DQF-COSY,TOCSY,NOESY,15N-1H HSQC,15N-1H HNHA,15N-1H HNHB,15N-1H TOCSY-HSQC and15N-1H NOESY-HSQC *** structure analysis ofhuwentoxin-Ⅺ showed that it mainly contains an N-terminal 310-helix from Thr3 to Arg5 and a C-terminalα-helix from Gln45 to Cys52,plus a triple-stranded antiparallel β-sheet of Glul 8-Asn23,Thr26-Ile31 *** studies provide a solid basis for the final structure determination of huwentoxin-Ⅺ.

关键词： huwentoxin-XI toxin nuclear magnetic resonance 15N labeling sequence-specific assignment

Theory and techniques of data mining in CGF behavior modeling

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science China(Information sciences) 2011年第4期54卷 717-731页

作者： YIN YunFei 1,2,GONG GuangHong 2 & HAN Liang 2 1 college of Computer science,Chongqing University,Chongqing 400044,China 2 School of Automation science and Electrical Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China 1. college of Computer science Chongqing University Chongqing 400044 China2. School of Automation Science and Electrical Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China

For the large quantity of data,rules and models generated in the course of computer generated forces (CGFs) behavior modeling,the common analytical methods are statistical methods based on the tactical rules,tactical doctrine and empirical ***,from the viewpoint of data mining,we can find many of these analytical methods are also each-and-every different data mining *** this paper,we survey the data mining theory and techniques that have appeared in the course of CGF behavior modeling from the viewpoint of data ***,we redefine and reclassify these theories and techniques according to the research requirements of data mining (the knowledge structure of data mining).We aim to help the CGF investigators to learn the key points and the research methods of the data intelligent processing in the CGF behavior modeling,and thus we can provide the references for the colleagues who are engaged in the research and practice of the CGF behavior modeling by this *** also introduce our ongoing work on the CGF behavior modeling based on data mining.

关键词： CGF CGF behavior modeling data mining theory and techniques

Near lossless compression of hyperspectral images based on distributed source coding

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science China(Information sciences) 2012年第11期55卷 2646-2655页

作者： NIAN YongJian1,WAN JianWei1,TANG Yi1 & CHEN Bo2 1college of Electronic science and Engineering,National University of Defense Technology,Changsha,410073,China 2college of science,National University of Defense Technology,Changsha,410073,China 1. college of Electronic science and Engineering National University of Defense Technology Changsha 410073 China 2. college of science National University of Defense Technology Changsha 410073 China

Effective compression technique of on-board hyperspectral images has been an active topic in the field of hyperspectral remote *** order to solve the effective compression of on-board hyperspectral images,a new distributed near lossless compression algorithm based on multilevel coset codes is *** to the diverse importance of each band,a new adaptive rate allocation algorithm is proposed,which allocates rational rate for each band according to the size of weight factor defined for hyperspectral images subject to the target rate *** prediction is introduced for Slepian-Wolf lossless coding and an optimal quantization algorithm is presented under the correct reconstruction of Slepian-Wolf decoder,which minimizes the distortion of reconstructed hyperspectral images under the target *** Slepian-Wolf encoder exploits the correlation of the quantized values to generate the final bit *** results show that the proposed algorithm has both higher compression efficiency and lower encoder complexity than several existing classical algorithms.

关键词： hyperspectral images near lossless compression Slepian-Wolf coding distributed source coding

The Study on BCR/ABL Fusion Gene in Adult Acute Lymphoblastic Leukemia

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Wuhan University Journal of Natural sciences 2001年第3期6卷 742-746页

作者： Li Hui yu 1,2 ,Zuo Guo Lin 1, ,Zuo Ping 2 1.college of Life science, Wuhan University,Wuhan 430072,China 2.Union Hospital,Tongji Medical college,Huazhong University of science and Technology,Wuhan 430022,China Wuhan University College of Life Science Wuhan China (GRID:grid.49470.3e) (ISNI:***) Huazhong University of science and Technology Union Hospital Tongji Medical College Wuhan China (GRID:grid.33199.31) (ISNI:***) Wuhan University College of Life Science Wuhan China (GRID:grid.49470.3e) (ISNI:***) Huazhong University of science and Technology Union Hospital Tongji Medical College Wuhan China (GRID:grid.33199.31) (ISNI:***)

In order to assess the significance of BCR/ABC fusion gene in adult acute lymphoblastic Leukemia (ALL), 28 patients who were diagnosed as ALL were enrolled to detect BCR/ABC gene using nested-RT-PCR. The results showed that 9 cases (31.25%) were BCR/ABL positive, and expressed P210 subtype. Among them 7 cases were B-ALL, and one was T-ALL. The diagnosis was proved by monoclonal antibodies recognition by indirect immunofluorescence. Adult patients with BCR/ABL positive ALL were significantly older (p1) and had higher WBC count (p1) as compared with BCR/ABL-negative patients. There was no significant difference in sex, hemoglobin and splenomegaly between two group (p>0.05). The induction failure rate was high in BCR/ABL positive patients and those who achieved complete remission usually relapsed earlier. In conclusion, adult ALL patients with BCR/ABL-positive have poorer prognosis.

关键词： Key words BCR/ABL gene acute lymphoblastic leukemia nested RT PCR

Properties of meso-tetrakis (4-n-alkanoyloxyphenyl) porphyrin liquid crystal Co and Ni complexes

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science China Chemistry 2007年第4期50卷 488-493页

作者： LIU Wei1,2 & SHI TongShun2 1 college of Materials science and Engineering, Shandong University of Technology, Zibo 255049, China 2 Department of Chemistry, Jilin University, Changchun 130023, China 1. college of Materials science and Engineering Shandong University of Technology Zibo 255049 China 2. Department of Chemistry Jilin University Changchun 130023 China

Six series of meso-tetrakis (4-n-alkanoyloxyphenyl) porphyrin Co and Ni complexes (12 kinds) were reported. Nine of the compounds were found to exhibit liquid crystal properties and display a hexagonal columnar discotic columnar (Colh) phase. Molecular structure of all synthesized compounds was confirmed by IR, UV, MS, 1H NIVR, and elemental analysis. These liquid crystalline compounds have been studied by cyclic voltammetry, luminescence, and surface photovoltage spectroscopy.

关键词： porphyrin liquid crystal cyclic voltammetry luminescence surface photovoltage spectroscopy