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Research on Methods of Ecological Security Assessment of the Middle and Lower Reaches of Liaohe River Based on GIS

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Chinese Journal of Population,Resources and Environment 2005年第4期3卷 20-25页

作者： Wang Geng 1,2 , Nie Baochi 3. Wang Lin 1 & Wu Wei 1 1. school of Environmental and biological Science and Technology, Dalian University of Technology, Dalian 116024, china 2. Urban and Environmental school, Liaoning normal University, Dalian 116029, china 3. shenyang Buraue of Water Resources, shenyang 110013. china. school of Environmental and biological Science and Technology Oalian University of Technology Oalian 116024 China Urban and Environmental school Uaoning Nonnal University Oalian 116029 China shenyang Buraue of Water Resources Shenyang 110013 China

Ecological security assessment and early warning research possess the attributes of spatiality, non-linearity and randomicity, so we must process much spatial information. Spatial analysis and data management are the advantages of GIS, which can define distribution trend and spatial relations of environmental factors, and show ecological security pattern graphically. Spatial differences of ecological security assessment based on GIS are discussed in this paper, of which the middle and lower reaches of the Liaohe River is taken as a study case. First, to work out pressure-state-response (P-S-R) assessment indicators system, and investigate in person and gather information; second, to digitize the watershed; third, to quantize and calculate by the fuzzy method; last, to construct GIS grid database, and expound spatial differences of ecological security by GIS interpolation and assembly analysis.

关键词： the middle and lower reaches of the Liaohe River ecological security assessment indicators system GIS spatial differences

New development of materials used in BFCs

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化工进展 2010年第S1期29卷 551-556页

作者： WANG Li (Faculty of Environmental and biological Engineering,shenyang University of chemical Technology,shenyang,110142,china)

Electrodes,catalysts,membranes,if present,are three main components in constructing an MFC for harvesting desired maximum power density and achieving higher coulombic efficiency (CE).Great improvements have been made,based on previous researches,in developing and diversifying materials,aside from *** most familiar to us are widely used carbon *** anodes,carbon matrix composites(e.g.,a combination of polyaniline(PANI)with TiO2 using carbon as substrate)have gained special attention,though carbon material itself can exhibit excellent performance by diversifying molecular structures such as carbon nanotubes(CNTs).In the meanwhile,the evolution of MFC architectures,heading to the direction of improving power generation,contributes to the combination of membranes and cathodes from separate modes to diverse assemblies,on which all sorts of catalysts,such as from commonly used Pt to iron phthalocyanine (Pc),metal tetramethoxyphenylporphyrin(TMPP),MnOx,or pyrolyzed iron(Ⅱ)phthalocyanine (pyr-FePc),can be immobilized through synthesis of these catalysts with polymer such as Nafion 117 (Dupont Co.,USA)or tetrafluoroethylen(eTeflon)containing functional groups or Polypyrrol(ePPy).In addition,catholytes with aqueous cathode immersed or flowing through the surface of air-cathode are favorably proposed containing transition metal redox couples or iron chelates.

关键词： BFCs anode cathode membrane catholyte

Deposition features of Ni on self-assembled microtubule template from biolipid by electroless method

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Science china Chemistry 2004年第3期47卷 228-234页

作者： FU Yubin1,2, ZHANG Lide1, ZHENG Jiyong2, FU Shangang3.& ZHU Mingwei3.1. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 23.03., china 2. Luoyang Ship Material Research Institute, Luoyang 47103., china 3. College of Life Science, Henan normal University, Xinxiang 453.02, china 1. Institute of Solid State Physics Chinese Academy of Sciences 230031 Hefei China 2. Luoyang Ship Material Research Institute 471039 Luoyang China 3. College of Life Science Henan Normal University 453002 Xinxiang China

Diacetylenic glycero-phosphatidylcholine is a chiral molecule with amphiphilic property, and it can self-assembly into a lipid microtubular structure. The lipid microtubule is a stable structure formed by tightly wound helical ribbons, and the ribbon-wrapping patterns have a significant effect on their chemical deposition on the microtubules. The deposition of colloidal Pd catalyst occurs mainly on the helical edge of the wound helical ribbons to form helical deposition lines of colloidal Pd particles in the interior and exterior of the lipid microtubules, resulting in an uneven chemical deposition of Ni on the microtubules. Catalyzed by as-deposited colloidal Pd, metallized Ni microtubules are characterized by a helical form, which may be in relation to inner stress due to the thickness difference or the different deposition processes. The observation of microtom shows that metallized tubules have a hollow structure. Some metallized tubules have a kind of coaxial double layer structure observed in the direct experiment evidence, indicating that metallization can occur in the inner and outer surface of the lipid tubules. Both lipid microtubules and metallized microtubules can be used as vehicles for encapsulating biological active molecules to control their release and to develop micro-components in biological and mechanical systems. Keywords molecular self-assembly - lipid microtubules - helical pattern - site-specific deposition - electroless metallization

关键词： molecular self-assembly, lipid microtubules, helical pattern, site-specific deposition, electroless metallization.

Bipolar charged aerosol agglomeration and collection by a two-zone agglomerator

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Journal of Environmental Sciences 2001年第3期13卷 276-279页

作者： XIANG Xiao dong 1, CHEN Bao zhi 1, COLBECK I 2 (1. school of Resource and Civil Engineering, Northeastern University, shenyang 110006, china. 2. Institute for Environmental Research, Department of {3. and chemical Sciences, University of Es school of Resource and Civil Engineering Northeastern University Shenyang 110006 China.

In older to collect fine particles more efficiently, a new-type electrostatic agglomerator with two zones was developed. The distinguishing feature of this electrostatic agglomerator is that the particles are bipolarly charged and coagulated in the same alternating electric field simultaneously. The silica flour with 2 fun mass median diameter and the smoke from burning wood powder were used as test aerosol. The comparison experimental results have shown that when the mean electric field is 4 kV/cm the collection efficiency of the new electrostatic agglomerator was 98.2% for silica flour and 67.4% for wood powder smoke, Under the same experimental condition. the collection efficiency of the electrostatic agglomerator with three zones was 97.4% for collecting silica flour and the collection efficiency of the electrostatic precipitator was 56.3. for wood powder smoke.

关键词： charged particle agglomeration alternating electric field electrostatic agglomerator (EA) electrostatic precipitator (ESP) collection efficiency

Laser-induced chemical VaporDeposited Nanosized Silicon Nitridewith Double Optical Beams

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Chinese Journal of Lasers 1996年第1期B5卷 67-71页

作者： WANG Weixiang (Institute of Quantum Electronices, South china normal Unicersity, Guangzhou 51063., china International Centre for Materials Physics, Academia Sinica, {3., 110015, china)LIU Songhao(Institute of Quantum Electronices, South china normal South china normal Univ Guangzhou China

It was studied that how the CO2laser lines affect the characteristics of silicon nitride powders synthesized by laser-induced chemical vapor deposition （LICVD）. A new method was proposed for nanosized silicon nitride synthesis, and it is called double optical beam LICVD. The stoichiometric silicon nitride nanopowders with high purity were produced by using this new method. The ratio of N/Si of the powder is as high as 1. 3.1 which is very close to the ideal value of 1. 3.3.

关键词： laser-induced chemical vapor deposition nanosized silicon nitride

Synthesis and Electrochemical Properties of Mg-doped LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2 Cathode Materials for Li-ion Battery

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Journal of Wuhan University of Technology(Materials Science) 2011年第2期26卷 212-216页

作者：傅春燕 Shaoyang Medical College Level Speciaity school Department of Pharmacy

The layered LiNi0.6Co0.2-xMn0.2MgxO2 （x=0.00,0.03.0.05,0.07） cathode materials were prepared by a co-precipitation *** properties of the Mg-doped LiNi0.6Co0.2Mn0.2O2 were investigated by X-ray diffraction （XRD）,scanning electron microscopy （SEM）,and electrochemical *** studies showed that the Mg-doped LiNi0.6Co0.2Mn0.2O2 had the same layered structure as the undoped *** SEM images exhibited that the particle size of Mg-doped LiNi0.6Co0.2Mn0.2O2 was finer than that of the undoped LiNi0.6Co0.2 Mn0.2O2 and that the smallest particle size is only about 1μ*** Mg-doped LiNi0.6Co0.2Mn0.2O2 samples were investigated on the Li extraction/insertion performances through charge/discharge,cyclic voltammogram （CV）,and electrochemical impedance spectra（EIS）.The optimal doping content of Mg was that x= 0.03.in the LiNi0.6Co0.2-xMn0.2MgxO2 samples to achieve high discharge capacity and good cyclic *** electrode reaction reversibility and electronic conductivity was enhanced,and the charge transfer resistance was decreased through *** improved electrochemical performances of the Mg-doped LiNi0.6Co0.2Mn0.2O2 cathode materials are attributed to the addition of Mg 2＋ ion by stabilizing the layer structure.

关键词： lithium ion batteries LiNi0.6Co0.2Mn0.2O2 Mg-doping cyclic voltammogram (CV)

Contact Electrification Spectrum for Performance Enhancement Mechanism Investigation of Triboelectric Nanogenerators based on Silicone Elastomers with Different Surface Microstructures

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高分子科学:英文版 2023年第10期41卷 1591-1598页

作者： Jianliang Gong shenyang Ye Yan Luo Liqiong Xia Bingyu Liu Yiwang Chen National Engineering Research Center for Carbohydrate Synthesis/Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China Institute of Polymers and Energy Chemistry(IPEC)/Jiangxi Provincial Key Laboratory of New Energy Chemistry Nanchang UniversityNanchang330031China

Triboelectric nanogenerators(TENGs)based on conjunctive effects of contact electrification(CE)and electrostatic induction are emerging as a new mechanical energy harvesting and sensing technique for promising applications in smart wearables,Internet of Things(IoTs),*** surface microstructure of a flexible triboelectric material for the increase of surface area is a common strategy for performance enhancement of TENGs,but the real roles of surface microstructures on their output performance are still not explicit due to the lack of suitable analysis tool and rational experimental *** advantages of the surface-sensitive characteristic of CE effect,this work exploited and developed the electric signal patterns generated by single impact of TENGs as a kind of CE spectrum to analyze and speculate the real roles of surface microstructures of flexible triboelectric materials on the output performance of ***,four different kinds of surface microstructures,namely planar surface(PS)and three combinations of two basic surface microstructures,i.e.,micro lens arrays(MLAs),fabric textures(FTs),and hierarchical structures of MLAs on FTs(MLA/FTs),were elaborately designed and introduced for an identical triboelectric material(i.e.,silicone elastomer)by a(micro)molding synthesis *** they were used for assembly of TENGs based on vertical contact mode to conduct performance evaluation under the same triggering *** systematic analysis and comparison of their highly repeatable CE spectra by programmed machine,it was found that the surface microstructure for a flexible triboelectric material to maximally enhance the output performance of a TENG shall achieve a positive synergistic effect of increasing triboelectric charge density,effective contact area and contacting/separating velocity,rather than simple increase of its surface area.

关键词： Contact electrification spectrum Silicone elastomer Surface microstructures Triboelectric nanogenerators Enhancement mechanism

Relation of phospholipase A2-Ⅴ and indoxam to hippocampal neuronal death

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Neural Regeneration Research 2006年第8期1卷 714-716页

作者： Fang Liu1,2, Shi Wang1, Yan Lin1, Runhui Li1, Li Ma1, Yanjun Li1, Qing Jin1, Xiao Gong1, Yuhua Chen3.1Department of Neurology, Fengtian Hospital of shenyang Medical College, shenyang 110024, Liaoning Province, china 2South Carolina University, SC, U.S.A 3.epartment of Development, china Medical University, shenyang 110024, Liaoning Province, china

BACKGROUND: Ⅴ secretory phospholipase A2 (sPLA2-Ⅴ) is abundant in many mammal tissues. However, it remains unknown whether sPLA2-Ⅴ causes biological or pathological response in central nervous system. OBJECTIVE: To observe the effect of phospholipase A2-Ⅴ (PLA2-Ⅴ) and its inhibitor (indoxam) on hippocampal neuron survival. DESIGN: A repetitive measurement. SETTING: The Animal Center of South Carolina University. MATERIALS: Sprague-Dawley pregnancy day-7, 14, 21 female rats were selected; Reagents: sPLA2- Ⅴ and indoxam were obtained from the Dennis Research Laboratories METHODS: The experiment was finished at the animal center in South Carolina University from January to December, 2004. 0, 12.5, 25, 50 and 100 μg/L sPLA2-Ⅴ were added to neuron with none-MgCl2 Eagle’s medium at 3. ℃, then changed to normal neuron culture medium after 3.hours. 1, 2.5, 5 and 10 μmol/L indoxam was added at 6 hours after 100 μg/L sPLA2-Ⅴwas put to Day-21 SD rat hippocampal embryonic neurons with none-MgCl2 Eagle’s medium at 3. ℃. After 3.hours in the inhibition experiment, it was changed to normal neuron culture medium. The embryonic hippocampal neurons were primarily cultured, and the neuron survival ratio was detected with morphological method. MAIN OUTCOME MEASURES: Survival ratio of hippocampal neurons. RESULTS: ① Effects of sPLA2-Ⅴon neuron survival: When sPLA2-Ⅴ was 0, 12.5, 25, 50 and 100 μg/L, the neuron survival ratios in embryonic neurons of day-7 SD rats were (95.3.1.1)%, (81.4±3.1)%, (74.2±2.2)%, (62.4±1.7)% and (48.9±1.6)%, those in embryonic neurons of day-14 rats were (93.2±1.4)%, (74.3.1.9)%, (68.1±1.7)%, (56.1±1.4)% and (42.5±1.1)%, and those in embryonic neurons of day-21 rats were (91.2±1.2)%, (69.4±2.1)%, (60.3.2.2)%, (49.1±1.2)% and (3..5±1.9)%. There were significant differences among different concentrations (P 3.±1.1)%, (82.11±1.2)% and (

关键词： and indoxam to hippocampal neuronal death Relation of phospholipase A2

An Empirical Study on Web-based English Listening Autonomous Learning Model

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An Empirical Study on Web-based English Listening Autonomous...