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Chemical Research in Chinese Universities 2016年第5期32卷 719-724页

作者： WU xiaomei LIU Guocheng WANG Xiuli SHAO Jiyan LIN Hongyan WANG Xiang Department of Chemistry Liaoning Province Silicon Materials Engineering Technology Research Centre Bohai University Jinzhou 121000 P. R. China

Three different dimensionalNi（II） coordination polymers, [Ni（3-pna）（HIP）（H2O）3]-H20（1）, [Ni（3-pna）- （1,3,5-HBTC）]（2） and [Ni2（H2O）（3-pna）2（1,4-CHDC）2]4（3）（3-pna=3-pyridylnicotinamide, H2HIP=5-hydroxyisoph- thalic acid, 1,3,5-H3BTC=l,3,5-benzenetricarboxylic acid, 1,4-H2CHDC=l,4-cyclohexanedicarboxylic acid）, were synthesized under hydrothermal conditions and characterized by means of infrared spectra（IR）, thermal gravimetric （TG） analyses, powder X-ray diffraction（PXRD） and single-crystal X-ray diffraction. Complex 1 has a structure of 1D single-stranded chain, which is further stretched by hydrogen-bond interactions to form a 2D supramolecular sheet. Complex 2 shows a 2D network, which is stretched to 3D supramolecular frameworks through hydrogen-bond interactions. Complex 3 reveals a 3D skeleton with a （3,3,6,6）-connected {3·72} {32·4 } {33·42·5·73·85·9 } {33·45·52·72·82·9} topology. The effects of different polycarboxylates on the ultimate architectures of the complexes 1--3 were dis- cussed. Furthermore, the fluorescent and photocatalytic properties of the title complexes were also investigated.

关键词： Crystal structure Dipyridylamide Polycarboxylate Photoluminescence property Photocatalytic property

Prelithiation Enhances Cycling Life of Lithium-Ion Batteries:A Mini Review

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Energy & Environmental Materials 2023年第6期6卷 1-9页

作者： xiaomei Liu ze Wu Leqiong Xie Li Sheng Jianhong Liu Li Wang Kai Wu Xiangming He Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China Contemporary Amperex Technology Co. LimitedNinde 352100China

During the last decade,the rapid development of lithium-ion battery(LIB)energy storage systems has provided significant support for the efficient operation of renewable energy *** the coming years,the service life demand of energy storage systems will be further increased to 30 years from the current 20 years on the basis of the equivalent service life of renewable energy ***,the life of the present LIB is far from meeting such high ***,research on the next-generation LIB with ultra-long service life is *** technology has been widely studied as an important means to compensate for the initial coulombic efficiency loss and improve the service life of *** review systematically summarized the different prelithiation methods from anode and cathode ***,the large-scale industrialization challenge and the possibility of the existing prelithiation technology are analyzed,based on three key parameters:industry compatibility,prelithiation efficiency,and energy ***,the future trends of improvement in LIB performance by other overlithiated cathode materials are presented,which gives a reference for subsequent research.

关键词： cycle life lithium compensation lithium-ion battery prelithiation

Discovery and Content Variation Analysis of Fibrinolytic Enzyme in Semen Sojae Praeparatum Fermentation

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Wuhan University Journal of Natural Sciences 2020年第1期25卷 87-92页

作者： Weng Meizhi Deng Xiongwei CHEN Qingfeng WANG Liyuan XIE xiaomei College of Traditional Chinese Medicine Jiangxi University of Traditional Chinese MedicineNanchang 330004JiangxiChina Hongdu Chinese Medical Hospital Nanchang 330008JiangxiChina Key Laboratory of Modern Preparation of TCM Ministry of EducationJiangxi University of Traditional Chinese MedicineNanchang 330004JiangxiChina

A strong fibrinolytic activity was demonstrated in the Semen Sojae Praeparatum(SSP), which is a famous traditional Chinese medicine. To study the activities and dynamic changes of fibrinolytic enzyme, standard fibrin plate was used to determine the fibrinolytic activity. For the first time fibrinolytic enzyme was found during the fermentation of SSP and the fibrinolytic activities of samples were shown to increase significantly over time. In the "yellow cladding" stage, the fibrinolytic activity was 619.75 IU/g. On day 6, 12 and 15 of the "secondary fermentation" stage, the fibrinolytic activity was 711.49 IU/g, 866.67 IU/g, 1 022.31 IU/g, respectively. The results indicate that fibrinolytic enzyme was generated during the fermentation of SSP and it displayed increasing activity which peaked at the "secondary fermentation" stage. The fibrinolytic enzyme was found to not only degrades fibrin directly, but also activate plasminogen to do so.

关键词： Semen Sojae Praeparatum fibrinolytic enzyme cardiovascular diseases thrombolytic effect functional foods

Effect of organic carbon on nitrification effciency and community composition of nitrifying biofilms

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Journal of Environmental Sciences 2009年第3期21卷 387-394页

作者： HU Jie LI Daping LIU Qiang TAO Yong HE Xiaohong WANG xiaomei LI Xudong GAO Ping Center for Applied and Environmental Microbiology Chengdu Institute of Biology Chinese Academy of Sciences Chengdu 610041 China School of Life Science Sichuan University Chengdu 610064 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

The effects of organic carbon/inorganic nitrogen （C/N） ratio on the nitrification processes and the community shifts of nitrifying biofilms were investigated by kinetic comparison and denaturing gradient gel electrophoresis （DGGE） analysis. The results showed that the nitrification rate decreased with an increasing organic concentration. However, the effect became weak when the carbon concentration reached a sufficiently high level. Denitrification was detected after organic carbon was added. The 12 h ammonium removal rate ranged from 85% to 30% at C/N = 0.5, 1, 2, 4, 8, and 16, as compared to the control （C/N = 0）. The loss of nitrogen after 24 h at C/N = 0.5, 1, 2, 4, 8, and 16 was 31%, 18%, 24%, 65%, 59%, and 62%, respectively. The sequence analysis of 16S rRNA gene fragments revealed that the dominant populations changed from nitrifying bacteria （Nitrosomonas europaea and Nitrobacter sp.） to denitrifying bacteria （Pseudomonas sp., Acidovorax sp. and Comamonas sp.） with an increasing C/N ratio. Although at high C/N ratio the denitrifying bacteria were the dominant populations, nitrifying bacteria grew simultaneously. Consequently, nitrification process coexisted with denitrification.

关键词： nitrification organic carbon denaturing gradient gel electrophoresis nitrifying bacteria community structure

Research on extracting method of micro-scale remote sensing information combination and application in coastal zone

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Acta Oceanologica Sinica 2009年第5期28卷 30-38页

作者： YANG xiaomei zHOU Chenghu GONG Jianming GAO zhenyu Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

Due to the need of rapid and sustainable development in China’s coastal zones, the high-resolution information theory using data mining technology becomes an urgent research focus. However, the traditional pixel-based image analysis methods cannot meet the needs of this development trend. The paper attempts to present an information extraction approach in terms of image segmentation based on an object-oriented algorithm for high-resolution remote sensing images. An aim of the author’ research is to establish an identification system of ＂pixel-primitive-object＂. Through extraction and combination of micro-scale coastal zone features, some objects are classified or recognized, e.g., tidal flat, water line, sea wall, and mariculture pond. Firstly, the authors extract various internal features of relatively homogeneous primitive objects using an image segmentation algorithm based on both spectral and shape information. Secondly, the features of those primitives are analyzed to ascertain an optimal object by adopting certain feature rules. The results from this research indicate that our model is practical to realize and the extraction accuracy of the coastal information is significantly improved as compared with the traditional approaches. Therefore, this study provides a potential way to serve the author’ highly dynamic coastal zones for monitoring, management, development and utilization.

关键词： Object-oriented Image Segmentation Coastal zone Information Extraction

Tracking historical storm records from high-barrier lagoon deposits on the southeastern coast of Hainan Island,China

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Acta Oceanologica Sinica 2021年第11期40卷 162-175页

作者： Liang zhou xiaomei Xu Yaping Wang Jianjun Jia Yang Yang Gaocong Li Changliang Tong Shu Gao School of Geography Geomaticsand PlanningJiangsu Normal UniversityXuzhou 221116China Hainan Key Laboratory of Marine Geological Resources and Environment Haikou 570206China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200046China Ministry of Education Key Laboratory for Coast and Island Development Nanjing UniversityNanjing 210023China School of Marine Science and engineering Nanjing Normal UniversityNanjing 210046China Department of Marine Technology Guangdong Ocean UniversityZhanjiang 524088China

The relationship between storm activity and global warming remains *** better understand storm–climate relationships,coastal lagoon deposits are increasingly being investigated because they could provide high-resolution storm records long enough to cover past climate ***,site-specific sediment dynamics and high barriers may bias storm ***,we aimed to investigate these factors through the reconstruction of five distinct storm records(XCL-01,XC-03,XC-06,XC-07,XC-08)from different water depths in a lagoon with a high barrier(i.e.,Xincun Lagoon of Hainan Island).Sediment cores were characterized using high-resolution grain size and XRF measurements,to identify storm *** data were coupled with a numerical simulation to obtain bed shear stress data with high-spatial resolution to better understand storm-induced sediment transport mechanisms.^(210) Pb dating and Pb pollution chronostratigraphic markers indicated that the chronology of the storm deposit sequences of the cores span the period between 117 a and 348 *** grain size and XRF results indicated numerous,highly variable and short-duration fluctuations,suggesting that storm-induced coarse-grained sediments were deposited at these core *** inconsistent storm events recorded in these cores suggest that these sites have different preservation potentials for storm ***,the consistence between storm sediment records and historical documents for Core XCL-01 indicates that high-barrier lagoons could provide long-term storm event records with high preservation potential.

关键词： storm deposits preservation potential sediment dynamics high-barrier lagoon Hainan Island

Performace of a Kind of Organic Emulsion Coated Phosphogypsum Particles

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Journal of Wuhan University of Technology(Materials Science) 2020年第5期35卷 872-878页

作者： CH eng Jiangguo zHANG Je XIE Fei zHANG Yusong College of Materials and Metallurgy Guizhou University Guiyvang 550025China Mining College Guizhou UniversityGuiyang 550025China Guizhou Key Laboratory of Comprehensive Utilization of Nonmetallic Mineral Resources Guiyang 550025China

The phosphogypsum particles coated with organic emulsion were prepared by coating three kinds of organic emulsion of silicone-acrylic,styrene-acrylic and *** structure and mineralogical characteristics,acid and alkali resistance,water resistance and dissociation degree of coated phosphogypsum were studied by means of SEM-EDAX,optical microscope,gravimetric analysis and chemical *** results showed that the initial emulsion can be used directly for coating and granulation of *** spray re-coating was carried out by using diluted emulsion with the water-to-emulsion mass ratio of 1∶*** organic emulsion coated phosphogypsum crystal can be clearly observed,and the mixing zone at internal boundary between the organic emulsion and phosphogypsum crystal was distinguishable under the optical *** photos showed that the surface of coated phosphogypsum particles was *** the basic elements of C,O,S and Ca can be detected by *** emulsion can be solidified into film-network between the phosphogypsum crystals inside of the coated particles,and it can play a protective role in improving the acid resistance,alkali resistance and water resistance of phosphogypsum,and reduce the degree of dissociation of phosphogypsum in water.

关键词： organic emulsion phosphogypsum coating particle resistance to acid and alkali

Microstructure and Eutectic Transformation of Squeeze Casting Alumina/zinc Alloy Composites

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Journal of Materials Science & Technology 2003年第3期19卷 256-258页

作者： z.eng LIU, xiaomei LIU, Yinglu zHU Cigao CHENFaculty of Materials and Chemical engineering, Southern Institute of Metallurgy, Ganzhou 341000, China Faculty of Mat. and Chem. eng. Southern Inst. of Metall. Ganzhou 341000 China

Alumina fiber-reinforced zinc alloy composites were manufactured by squeeze casting, and the eutectic transformation in the zinc alloy composites was studied. The results indicate that there is a fine and close interface between the fiber and the matrix, and the alloy elements can improve the combination between the fibers and the matrix in the composites. The fibers can serve as the sites of heterogeneous nucleation of the eutectic in the zinc alloy during the solidification of the composites, and the silicon on the interface between the fibers and the matrix plays a leading role during the coupled growth of the eutectic so that the eutectic transformation of the composites consists of Al-Si eutectic transformation and zn-AI eutectic transformation.

关键词： Alumina/zinc alloy composite Squeeze casting Microstrcture

The Electromagnetic Compatibility and Distribution of Antenna System

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Journal of Systems engineering and Electronics 1995年第1期6卷 65-72页

作者： B. F Wang S. z. adns & Y. L. Yao(Dept. of Elect. eng., Beijing University of Aeronautics and Astronatutics, Beijing 100083) Dept. of Elect. eng. Beijing University of Aeronautics and Astronatutics Beijing 100083

The mathematical model of electromagnetic compatibility and the distribution of aircraft antenna system have been investigated. The solutions of the antenna gain and electromagnetic interference margin in the regions of low frequency, resonance and high frequency were discussed. By using the basic analytical method of the EMI margin the distributed antenna system can be determined. The main program flow chart of distributed antenna design were given, and illustrated with examples of the microstrip antennas.

关键词： Electromagnetic compatibility Distribution of antennas Aircraft antennas Microstrip Antennas

Semantic Session Analysis for Web Usage Mining

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Wuhan University Journal of Natural Sciences 2007年第5期12卷 773-776页

作者： zHANG Hui SONG Hantao XU xiaomei Department of Computer Science and engineering Beijing Institute of Technology Beijing 100081 China

A semantic session analysis method partitioning Web usage logs is presented. Semantic Web usage log preparation model enhances usage logs with semantic. The Markov chain model based on ontology semantic measurement is used to identifying which active session a request should belong to. The competitive method is applied to determine the end of the sessions. Compared with other algorithms, more successful sessions are additionally detected by semantic outlier analysis.

关键词： Web usage mining Web log preparation session analysis