Number of references:12
Main heading:Smart power grids
Controlled terms:Asynchronous generators - Dynamic analysis - Dynamic response - Electric fault currents - Environmental engineering - Rotors - Rotors (windings) - Wind power
Uncontrolled terms:Control strategies - Doubly fed generators - Doubly fed induction generators - Dynamic response analysis - Electromagnetic transitions - Harmonic components - Harmonic currents - Low-voltage ride-through - Rotor-side converter - Transition process - Under voltage - Voltage dip - Voltage phase angle - Voltage sag - Wind energy generation
Classification code:706.2 Electric Power Lines and Equipment - 706.1 Electric Power Systems - 705.2.1 AC Generators - 704.1 Electric Components - 615.8 Wind Power (Before 1993, use code 611 ) - 601.2 Machine Components - 454 Environmental Engineering - 422.2 Strength of Building Materials : Test Methods - 408.1 Structural Design, General
DOI:10.1109/CDCIEM.2011.466
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112013979034
Title:Load sharing techniques in hybrid power systems for DC micro-grids
Authors:Wei, Jiang (1); Yu, Zhang (2)
Author affiliation:(1) Smart Energy Laboratory, School of Energy and Power Engineering, Yangzhou University, 196 Huayangxilu Rd, Yangzhou, 225127, China; (2) Electrical and Computer Engineering Department, University of Miami, Coral Gables, FL 33146, United States
Corresponding author:Wei, J.(weijiang@ieee.org)
Source title:2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011 - Proceedings
Abbreviated source title:Asia-Pac. Power Energy Eng. Conf., APPEEC - Proc.
Monograph title:2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011 - Proceedings
Issue date:2011
Publication year:2011
Article number:5748764
Language:English
ISBN-13:9781424462551
Document type:Conference article (CA)
Conference name:2011 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2011
Conference date:March 25, 2011 - March 28, 2011
Conference location:Wuhan, China
Conference code:84722
Sponsor:IEEE Power and Energy Society (PES); Chinese Society for Electrical Engineering (CSEE); State Grid Corporation of China; China Southern Power Grid; Wuhan University
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:DC micro-grids is an advanced electric delivery infrastructure candidate for future Smart Grid. By interactively integrating a wide selection of renewable sources, energy storages as well as traditional utility grid within a local power network, DC micro-grids can achieve economical system operation, and bing local survivability to critical zones. As important supplement to conventional generation means, properly used renewable sources and energy storages can minimize the operational costs and maximize the system performance. Power converter system with multi-input and integrated structure is capable of processing and managing multiple sources and storages simultaneously, which is being considered as the prospective building blocks of future DC and AC micro-grids. This paper presents two new load sharing methods in dc-dc conversion for multiple inputs. First, a detailed survey will be conducted to show the status of load sharing methods in dc-dc power conversion; new requirements for load sharing operation in a DC micro-grid environment will be proposed; a cascade and a parallel organized load sharing control system proposed by the authors are presented and discussed for a multi-source/storage hybrid power system; both simulation and experimental results will be presented in the last section to prove the effectiveness of the new load sharing methods. © 2011 IEEE.
Number of references:14
Main heading:DC power transmission
Controlled terms:DC-DC converters - Digital control systems - Electric power measurement - Electric power transmission networks - Energy storage - Flywheels - Power generation - Power transmission - Smart power grids
Uncontrolled terms:Digital control - Hybrid power systems - Load sharing - Micro grid - Multi-port
Classification code:942.2 Electric Variables Measurements - 722.4 Digital Computers and Systems - 706 Electric Transmission and Distribution - 704.1 Electric Components - 702 Electric Batteries and Fuel Cells - 602.2 Mechanical Transmissions - 601.1 Mechanical Devices
DOI:10.1109/APPEEC.2011.5748764
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20111313858342
Title:Effects of experimental conditions on one-dimensional single-crystal nanostructure of β-FeOOH
Authors:Wei, Chengzhen (1); Nan, Zhaodong (1)
Author affiliation:(1) College of Chemistry and Chemical Engineering, Yang Zhou University, Yangzhou, Jiangsu Province 225002, China
Corresponding author:Nan, Z.(zdnan@yzu.edu.cn)
Source title:Materials Chemistry and Physics
Abbreviated source title:Mater Chem Phys
Volume:127
Issue:1-2
Issue date:May 16, 2011
Publication year:2011
Pages:220-226
Language:English
ISSN:02540584
CODEN:MCHPDR
Document type:Journal article (JA)
Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom
Abstract:A facile and friendly environmental route has been developed to prepare one-dimensional β-FeOOH nanorods without any template at low temperature. In the present reaction system, FeCl36H2O was used as a single iron precursor. Effects of different experimental conditions on morphology and polymorph of the as-prepared samples were studied. Compared with the urea, the concentration of FeCl3 influenced evidently the length of the as-formed β-FeOOH nanorods. The aspect ratio of the sample was adjusted from 6 to 24 by changing the concentration of FeCl3. When the experimental temperature increased from 70 to 80 °C, the morphology of the resulting β-FeOOH changed from spindle to rod. The influences of different kinds of electrolytes on the final products were also studied. The results demonstrated that different electrolytes (KCl, KSCN, NaNO3 and NH4Cl) can strongly influence the sizes and structures of the as-prepared samples. Compared with various surfactants, the anionic surfactant, sodium dodecyl sulfate (SDS), affected significantly the morphology and size of the as-prepared samples. Nanoribbon-shaped β-FeOOH was synthesized in the presence of SDS for the first time. © 2011 Elsevier B.V. All rights reserved.
Number of references:37
Main heading:Anionic surfactants
Controlled terms:Aspect ratio - Electrolytes - Isomers - Nanorods - Polymorphism - Sodium - Sodium sulfate - Urea
Uncontrolled terms:Experimental conditions - Iron oxyhydroxides - Iron precursors - Low temperatures - Morphology and size - Nanoribbons - One-dimensional nanostructure - Reaction system - Sodium dodecyl sulfate - Surfactants
Classification code:951 Materials Science - 943 Mechanical and Miscellaneous Measuring Instruments - 933 Solid State Physics - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 801 Chemistry - 761 Nanotechnology - 702 Electric Batteries and Fuel Cells - 549.1 Alkali Metals
DOI:10.1016/j.matchemphys.2011.01.062
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20111913973576
Title:Kinematics and simulation of a 6-leg, 4-DOF parallel manipulator
Authors:Chen, Wenjia (1); Zhang, Jiang (1)
Author affiliation:(1) College of Mechanical Engineering, Yangzhou University, Yzngzhou 225009, China
Corresponding author:Chen, W.(wjchen@yzu.edu.cn)
Source title:Proceedings - 2010 International Conference on Intelligent System Design and Engineering Application, ISDEA 2010
Abbreviated source title:Proc. - Int. Conf. Intelligent Syst. Des. Eng. Appl., ISDEA
Volume:1
Monograph title:Proceedings - 2010 International Conference on Intelligent System Design and Engineering Application, ISDEA 2010
Issue date:2011
Publication year:2011
Pages:903-906
Article number:5743322
Language:English
ISBN-13:9780769542126
Document type:Conference article (CA)
Conference name:2010 International Conference on Intelligent System Design and Engineering Application, ISDEA 2010
Conference date:October 13, 2010 - October 14, 2010
Conference location:Changsha, Hunan, China
Conference code:84713
Sponsor:Hunan University of Technology; Central South University; Hunan Instrument and Control Society; InfoBeyond Rechnology LLC
Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
Abstract:In the past decades, parallel manipulators have been found in many industrial applications and a number of interesting mechanical devices and design methods have been extensively studied. However, most efforts are dedicated to six degrees of freedom (DOF) or three-DOF manipulators. This paper presents a novel six-leg, four-DOF parallel platform manipulator with base mounted prismatic actuators. The movable platform of the manipulator can translate along two directions and rotate around two axes respectively (2T-2R). The kinematics model is formulated, which describes the inverse and forward kinematics transformation. The singularity analysis of this six-leg, four-DOF parallel manipulator is introduced. © 2010 IEEE.
Number of references:9
Main heading:Manipulators
Controlled terms:Design - Industrial applications - Intelligent systems - Kinematics - Mathematical models - Systems analysis
Uncontrolled terms:Design method - Forward kinematics - Four-degrees-of-freedom - Kinematics models - Mechanical device - Parallel manipulators - Parallel platforms - Simulation - Singularity - Singularity analysis - Six degrees of freedom - Two directions
Classification code:961 Systems Science - 931.1 Mechanics - 921 Mathematics - 913 Production Planning and Control; Manufacturing - 731.5 Robotics - 723.4 Artificial Intelligence - 408 Structural Design
DOI:10.1109/ISDEA.2010.439
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20111713935184
Title:Iron salt, a cheap, highly efficient and environment-friendly metal catalyst for Se-Se bond cleavage and the further reaction with methylenecyclopropanes under mild conditions
Authors:Yu, Lei (1); Ren, Lingfeng (1); Yi, Rong (1); Wu, Yulan (1); Chen, Tian (1); Guo, Rong (1)
Author affiliation:(1) School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
Corresponding author:Yu, L.(yulei@yzu.edu.cn)
Source title:Journal of Organometallic Chemistry
Abbreviated source title:J. Organomet. Chem.
Volume:696
Issue:10
Issue date:May 15, 2011
Publication year:2011
Pages:2228-2233
Language:English
ISSN:0022328X
CODEN:JORCAI
Document type:Journal article (JA)
Publisher:Elsevier, P.O. Box 211, Amsterdam, 1000 AE, Netherlands
Abstract:FeCl3 was found to be a good catalyst in Se-Se bond cleavage. Further electrophilic additions to methylenecyclopropanes provide a convenient access to diphenylselenylcyclobutanes. Comparing with other Lewis acids, FeCl3 is much cheaper and the reaction conditions are milde and more tolerance to air and moisture. © 2010 Elsevier B.V. All rights reserved.
Number of references:45
Main heading:Catalysts
Controlled terms:Butane - Iron - Propane - Selenium
Uncontrolled terms:Bond cleavages - Cyclobutanes - Electrophilic additions - Environment friendly - Iron catalyst - Iron salts - Lewis Acid - MCPs - Metal catalyst - Methylenecyclopropanes - Reaction conditions
Classification code:521 Fuel Combustion and Flame Research - 522 Gas Fuels - 545.1 Iron - 712.1.1 Single Element Semiconducting Materials - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally
DOI:10.1016/j.jorganchem.2010.11.047
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112113996136
Title:Solubility of 1,6-naphthalene disulfonic acid disodium in binary sodium chloride + water, sodium sulfate + water, and ethanol + water solvent mixtures at elevated temperatures
Authors:Li, Rong-Rong (1); Zhao, Hong-Kun (2); Jiang, Su-Na (2); Sun, Lu-Lu (2)
Author affiliation:(1) School of Pharmaceutical and Chemical Engineering, TaiZhou University, Linhai, Zhejiang, 317000, China; (2) College of Chemistry and Chemical Engineering, YangZhou University, Yangzhou, Jiangsu, 225002, China
Corresponding author:Zhao, H.-K.(hkzhao@zzu.edu.cn)
Source title:Journal of Chemical and Engineering Data
Abbreviated source title:J Chem Eng Data
Volume:56
Issue:5
Issue date:May 12, 2011
Publication year:2011
Pages:2692-2695
Language:English
ISSN:00219568
E-ISSN:15205134
CODEN:JCEAAX
Document type:Journal article (JA)
Publisher:American Chemical Society, 2540 Olentangy River Road, P.O. Box 3337, Columbus, OH 43210-3337, United States
Abstract:The solubility of 1,6-naphthalene disulfonic acid disodium in binary sodium chloride + water, sodium sulfate + water, and ethanol + water solvent mixtures was measured in temperature range from (273.15 to 323.15) K by a steady-state method. Results of these measurements were correlated by a modified Apelblat equation. It was found that sodium chloride + water is the best solvent mixture for purifying 1,6-naphthalene disulfonic acid disodium. © 2011 American Chemical Society.
Number of references:11
Main heading:Organic solvents
Controlled terms:Binary mixtures - Ethanol - Naphthalene - Sodium - Sodium chloride - Sodium sulfate - Solubility - Solvents
Uncontrolled terms:Apelblat equation - Disulfonic acid - Elevated temperature - Solvent mixtures - Steady-state method - Temperature range - Water solvent mixtures
Classification code:549.1 Alkali Metals - 801.4 Physical Chemistry - 804 Chemical Products Generally
DOI:10.1021/je101047a
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112614103326
Title:Monitoring wheat main growth parameters at anthesis stage by Landsat TM
Authors:Tan, Changwei (1); Wang, Jihua (2); Zhao, Chunjiang (2); Wang, Yan (1); Wang, Junchan (1); Tong, Lu (1); Zhu, Xinkai (1); Guo, Wenshan (1)
Author affiliation:(1) Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, Yangzhou University, Yangzhou 225009, China; (2) National Engineering Research Center for Information Technology in Agriculture, Beijing 100097, China
Corresponding author:Guo, W.(guows@yzu.edu.cn)
Source title:Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
Abbreviated source title:Nongye Gongcheng Xuebao
Volume:27
Issue:5
Issue date:May 2011
Publication year:2011
Pages:224-230
Language:Chinese
ISSN:10026819
CODEN:NGOXEO
Document type:Journal article (JA)
Publisher:Chinese Society of Agricultural Engineering, Agricultural Exhibition Road South, Beijing, 100026, China
Abstract:In order to acquire detail information of a regional winter wheat within growth season to instruct the production, the experiment was carried out in wheat growth season during 2007-2009 in Jiangsu province to monitor main growth parameters with Landsat TM data. The relationships of main growth parameters, grain quality and yield parameters at anthesis stage were analyzed, as well as the relationships of main growth parameters with satellite remote sensing variables. And then the quantitative relationship models were established and evaluated to monitor SPAD, biomass, leaf area index (LAI) and leaf nitrogen content(LNC) in winter wheat using remote sensing spectral variables derived from Landsat TM images. The results showed that at anthesis stage, it was feasible to monitor wheat SPAD, biomass, LAI and LNC using the satellite remote sensing variables of nitrogenous reflection index (NRI), B4 and normalized difference vegetation index (NDVI) respectively. Based on sensitive remote sensing variables, the models for monitoring SPAD, biomass, LAI and LNC at anthesis stage in winter wheat were established, which the root mean square error (RMSE) for SPAD, biomass, LAI and LNC were 3.12, 216.5 kg/hm2, 0.269 and 0.162, respectively. Based on the monitoring models, the thematic mapping of monitoring SPAD, biomass, LAI and LNC under different grades at anthesis stage can be got to realize the spatial quantization expression for monitoring main growth parameters. The technology to obtain large area information using satellite remote sensing data can overcome the shortcoming of point sampling technology, and provide timely informations for agricultural production management decisions.
Number of references:21
Main heading:Ecology
Controlled terms:Biomass - Forestry - Grain growth - Industrial management - Monitoring - Remote sensing - Satellites
Uncontrolled terms:Agricultural production management - Grain quality - Growth parameters - Growth season - Jiangsu province - LANDSAT TM - Landsat TM data - Landsat TM images - Leaf area index - Leaf nitrogen content - Main growth parameters estimation - Monitoring model - Monitoring models - Normalized difference vegetation index - Point sampling - Reflection index - Relationship model - Root mean square errors - Satellite remote sensing - Satellite remote sensing data - Spatial quantization - Spectral variables - Thematic mapping - Winter wheat - Yield parameters
Classification code:944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 941 Acoustical and Optical Measuring Instruments - 933.1.2 Crystal Growth - 912.2 Management - 821.5 Agricultural Wastes - 821.0 Woodlands and Forestry - 731.1 Control Systems - 655.2 Satellites - 454.3 Ecology and Ecosystems
DOI:10.3969/j.issn.1002-6819.2011.05.040
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112414057964
Title:Preparation and properties of ZrW2O8 thin films deposited by pulsed laser deposition
Authors:Liu, Hong-Fei (1); Zhang, Zhi-Ping (2); Zhang, Wei (1); Chen, Xiao-Bing (1); Cheng, Xiao-Nong (3)
Author affiliation:(1) College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China; (2) Jianghai College, Yangzhou 225101, China; (3) School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
Corresponding author:Liu, H.-F.(liuhf@yzu.edu.cn)
Source title:Wuji Cailiao Xuebao/Journal of Inorganic Materials
Abbreviated source title:Wuji Cailiao Xuebao
Volume:26
Issue:5
Issue date:May 2011
Publication year:2011
Pages:540-544
Language:Chinese
ISSN:1000324X
CODEN:WCXUET
Document type:Journal article (JA)
Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China
Abstract:ZrW2O8 thin films were deposited on quartz substrates by pulsed laser deposition method. Effects of substrate temperature on the microstructure, composition, surface roughness and morphology of the ZrW2O8 thin films were observed by X-ray diffraction (XRD) and atomic force microscope (AFM). The thickness and optical transmittance of the ZrW2O8 thin films were measured by surface profilometer and spectrophotometer respectively. The negative thermal expansion property of the ZrW2O8 thin film was measured by high temperature X-ray diffraction. The results indicate that the as-deposited ZrW2O8 thin films deposited at the substrate temperature of room temperature, 550°C and 650°C are amorphous phase, and the cubic ZrW2O8 thin film can be obtained after annealing at 1200°C for 3 min and then quenching in water. With the increase of deposition temperature, the surface roughness decreases markedly. The optical transmittances of the ZrW2O8 thin films prepared at different condition are about 80%, and the negative thermal expansion coefficient of the resulting cubic ZrW2O8 thin film is -11.378×10-6 K-1 in the temperature range from 20°C to 600°C.
Number of references:14
Main heading:Film preparation
Controlled terms:Amorphous films - Atomic force microscopy - Buoyancy - Deposition - Diffraction - Expansion - Opacity - Pulsed laser deposition - Pulsed lasers - Quartz - Substrates - Surface morphology - Surface properties - Surface roughness - Thermal expansion - Thin films - Vapor deposition - X ray diffraction
Uncontrolled terms:Amorphous phase - Atomic force microscopes - Deposition temperatures - High temperature X-ray diffraction - Negative thermal expansion - Preparation and properties - Quartz substrate - Room temperature - Substrate temperature - Surface profilometers - Surface roughness and morphology - Temperature range - Transmittance - ZrW2O8
Classification code:951 Materials Science - 802.2 Chemical Reactions - 813.1 Coating Techniques - 931.2 Physical Properties of Gases, Liquids and Solids - 931.3 Atomic and Molecular Physics - 933.1.1 Crystal Lattice - 933.2 Amorphous Solids - 744.9 Laser Applications - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 714.2 Semiconductor Devices and Integrated Circuits - 712.1 Semiconducting Materials - 482.2 Minerals - 744.1 Lasers, General
DOI:10.3724/SP.J.1077.2011.00540
Database:Compendex
Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112614103361
Title:Effects of water surface evaporation on water transfer efficiency for Jiangsu section of South-to-North water Diversion Project
Authors:Qiu, Baoyun (1); Wang, Fei (1); Feng, Xiaoli (1); Huang, Haitian (2); Yang, Xingli (1)
Author affiliation:(1) School of Energy and Power Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China; (2) Science and Technology Commission of Water Resources Department of Jiangsu Province, Nanjing, Jiangsu 210029, China
Corresponding author:Qiu, B.(yzdxqby@sohu.com)
Source title:Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering
Abbreviated source title:Paiguan Jixie Xuebao.
Volume:29
Issue:3
Issue date:May 2011
Publication year:2011
Pages:219-223
Language:Chinese
ISSN:16748530
CODEN:PAJIE2
Document type:Journal article (JA)
Publisher:Editorial Department of Drainage and, 30 Mengxiyuan Lane, Zhenjiang, 212003, China
Abstract:In order to know the evaporating capacity of channel and lake reservoir water surface along Jiangsu section of the Eastern Route of South-to-North Water Diversion Project(JERP), its power loss of the pumping stations and its influence on water transfer efficiency of JERP, evaporating capacity calculating models and formulae which are suitable for the areas where JERP locates were analyzed and compared. Evaporating capacity of every channel and lake reservoir water surface along JERP was calculated by integral. Both spacial and temporal distribution characteristics of the evaporating capacities of water surface were analyzed. The discharge loss and input power loss of every step pumping stations caused by water surface evaporation were calculated. The effect of water surface evaporation on water transfer efficiency of JERP was computed and analyzed. The results show that the evaporating capacities of water surfaces gradually increase from south to north and north-west, and are largest in summer and least in winter. The annual average evaporating capacity of water surfaces amounts to 862.2 mm. The evaporation water volume losses of Hongze Lake, Luoma Lake, Baima Lake and water transfer channels are 77.7%, 13.3%, 3.6% and 5.4% of the total evaporation water volume loss respectively.17.46% of the water pumped by source pumping stations loses for evaporation, which causes water transfer efficiency of JERP to decrease by 10.33%, and that is a considerable energy loss. Pipelines could be considered for the great water transfer projects which could avoid evaporating capacity of water surface.
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