Title: Exciton binding energy and excitonic absorption spectra in a parabolic quantum wire under transverse electric field
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Abstract:Palladium nanoparticles modified glassy carbon electrodes (Pd/GC) were prepared via the electrodeposition of palladium on a glassy carbon (GC) electrode using cyclic voltammetry in different sweeping potential ranges. The scanning electron microscope images of palladium particles on the GC electrodes indicate that palladium particles with diameters of 20-50 nm were homogeneously dispersed on the GC electrode at the optimal deposition conditions, which can effectively catalyze the reduction of m-nitrophenol in aqueous solutions, but their catalytic activities are strongly related to the deposition conditions of Pd. The X-ray photoelectron spectroscopy spectra of the Pd/GC electrode confirmed that 37.1% Pd was contained in the surface composition of the Pd/GC electrode. The cyclic voltammograms of the Pd/GC electrode in the solution of m-nitrophenol show that the reduction peak of m-nitrophenol shifts towards the more positive potentials, accompanied with an increase in the peak current compared to the bare GC electrode. The electrocatalytic activity of the Pd/GC electrode is affected by pH values of the solution. In addition, the electrolysis of m-nitrophenol under a constant potential indicates that the reduction current of m-nitrophenol on the Pd/GC electrode is approximately 20 times larger than that on the bare GC electrode. © 2011 Elsevier Ltd. All rights reserved. Number of references:44 Main heading:Glassy carbon Controlled terms:Carbon - Catalyst activity - Cyclic voltammetry - Electrocatalysis - Electrodeposition - Electrodes - Glass membrane electrodes - Nanoparticles - Photoelectron spectroscopy - Reduction - Scanning electron microscopy - X ray photoelectron spectroscopy Uncontrolled terms:Constant Potential - Cyclic voltammograms - Deposition conditions - Electrocatalytic activity - Electrocatalytic reduction - GC electrode - Glassy carbon electrodes - m-Nitrophenol - Modified electrodes - Modified glassy carbon electrode - Palladium nanoparticles - Palladium particles - Peak currents - pH value - Positive potential - Potential range - Reduction current - Reduction peak - Scanning Electron Microscope - X-ray photoelectron spectroscopy spectra Classification code:951 Materials Science - 933 Solid State Physics - 813.1 Coating Techniques - 804 Chemical Products Generally - 802.2 Chemical Reactions - 801.4.1 Electrochemistry - 801 Chemistry - 761 Nanotechnology - 741.1 Light/Optics - 708 Electric and Magnetic Materials - 704.1 Electric Components DOI:10.1016/j.electacta.2011.09.064 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20114114414293 Title:Characterization and antioxidant activity of the complex of tea polyphenols and oat β-glucan Authors:Wu, Zhen (1); Ming, Jian (1); Gao, Ruiping (1); Wang, Yuxue (1); Liang, Qiang (1); Yu, Huaguang (3); Zhao, Guohua (1) Author affiliation:(1) College of Food Science, Southwest University, Chongqing 400715, China; (2) Food Engineering and Technology Research Centre of Chongqing, Chongqing 400715, China; (3) College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China Corresponding author:Zhao, G.(zhaogh@swu.edu.cn) Source title:Journal of Agricultural and Food Chemistry Abbreviated source title:J. Agric. Food Chem. Volume:59 Issue:19
Issue date:October 12, 2011 Publication year:2011 Pages:10737-10746 Language:English ISSN:00218561 E-ISSN:15205118 CODEN:JAFCAU Document type:Journal article (JA) Publisher:American Chemical Society, 2540 Olentangy River Road, P.O. Box 3337, Columbus, OH 43210-3337, United States Abstract:Few data are available about the effects of complexation of polyphenols with polysaccharide on their bioavailability. The complex of tea polyphenols (TP) with oat β-glucan was characterized by ultraviolet-visible spectrometry, Fourier transform infrared spectrometry, differential scanning calorimetry, atomic force microscopy, and solid-state 13C NMR spectroscopy. The results indicated that the bonds which governed the interaction between TP and oat β-glucan were strong hydrogen bonds. The in vitro antioxidant activity of TP, β-glucan, their complex, and physical mixture was assessed using four systems, namely, DPPH&bull, OH &bull, and O Number of references:73 Main heading:Plants (botany) Controlled terms:Agents - Aldehydes - Atomic force microscopy - Atomic spectroscopy - Biochemistry - Blending - Characterization - Differential scanning calorimetry - Fourier transform infrared spectroscopy - Fourier transforms - Hydrogen bonds - Mixtures - Nuclear magnetic resonance spectroscopy - Oxygen - Peptides - Phenols - Spectrometry Uncontrolled terms:Antioxidant activities - Antioxidant capacity - complex - Concentration ranges - Fourier transform infrared spectrometry - Glutathione peroxidase - in vivo - In-vitro - Malondialdehyde - Physical mixtures - Polyphenols - Reducing power - Scavenging activities - Super oxide dismutase - Tea polyphenols - Total antioxidant capacity - Ultra violet visible spectrometry Classification code:951 Materials Science - 932.2 Nuclear Physics - 921.3 Mathematical Transformations - 804.1 Organic Compounds - 804 Chemical Products Generally - 802.3 Chemical Operations - 801 Chemistry - 741.3 Optical Devices and Systems - 461.9 Biology DOI:10.1021/jf202722w Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20114114408047 Title:Curved surface and material design and construction Authors:Yu, Xifa (1); Li, Cixiang (2); Lin, Jing (2) Author affiliation:(1) Civil Science and Engineering College, Yangzhou University, Yangzhou, China; (2) Hydraulic Science and Engineering College, Yangzhou University, Yangzhou, China Corresponding author:Yu, X.(xfyu@yzu.edu.cn) Source title:Applied Mechanics and Materials Abbreviated source title:Appl. Mech. Mater. Volume:99-100 Monograph title:Architecture and Building Materials Issue date:2011 Publication year:2011 Pages:162-165 Language:English ISSN:16609336 ISBN-13:9783037852453 Document type:Conference article (CA) Conference name:2011 International Conference on Civil Engineering and Transportation, ICCET 2011 Conference date:October 14, 2011 - October 16, 2011 Conference location:Jinan, China Conference code:86767 Sponsor:Shandong Jianzhu University, School of Civil Engineering; Shandong University, School of Civil Engineering; Shandong Univ. Sci. Technol., Sch. Civ. Eng. Archit.; Yantai University, School of Civil Engineering; Shandong Prov. Key Lab Appraisal Retrofitting Build. Struct. Publisher:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany Abstract:The application of curved surface is more and more popular in various kinds of engineering, for different curved surfaces ,because the form and formation way of their generatrix form are different, the surface properties are also different[1,2],so the relevant materials used must match with them too. As a designer, when he/she designs the curved surface, while in pursuit of the perfect modeling, he/she must take the scientific structure in consideration as well, so as to convenient for construction; As a constructor, he/she must fully understand the curved surface's character, rasp the mechanism, and then use a scientific and simple technique to achieve a perfect structure modeling. © (2011) Trans Tech Publications. Number of references:4 Main heading:Surfaces Controlled terms:Building materials - Civil engineering - Construction - Design - Materials - Materials handling - Surface properties Uncontrolled terms:Curved surfaces - Material designs - Structure modeling Classification code:691 Bulk Handling and Unit Loads - 415 Metals, Plastics, Wood and Other Structural Materials - 414 Masonry Materials - 413 Insulating Materials - 951 Materials Science - 412 Concrete - 409 Civil Engineering, General - 408 Structural Design - 405 Construction Equipment and Methods; Surveying - 411 Bituminous Materials DOI:10.4028/www.scientific.net/AMM.99-100.162 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20113514285830 Title:Fabrication of GNPs/CDSH-Fc/nafion modified electrode for the detection of dopamine in the presence of ascorbic acid Authors:Chen, Ming (1); Wei, Xiujuan (1); Qian, Hui (1); Diao, Guowang (1) Author affiliation:(1) College of Chemistry and Chemistry Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, China; (2) Key Laboratory of Environmental Materials and Environmental Engineering of Jiangsu Province, Yangzhou, Jiangsu, 225002, China Corresponding author:Diao, G.(gwdiao@yzu.edu.cn) Source title:Materials Science and Engineering C Abbreviated source title:Mater. Sci. Eng. C Volume:31 Issue:7
Issue date:October 10, 2011 Publication year:2011 Pages:1271-1277 Language:English ISSN:09284931 Document type:Journal article (JA) Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom Abstract:A novel dopamine sensor was fabricated by forming the inclusion complex between mono-6-thio-β-cyclodextrin (CD-SH) and ferrocene (Fc) functionalized gold nanoparticles (GNPs) films on a platinum electrode. The properties of the GNPs/CDSH-Fc nanocomposite were characterized by Fourier transform infrared spectra, UV-visible absorption spectroscopy, transmission electron microscopy and cyclic voltammetry. The electrochemistry of dopamine (DA) was investigated by cyclic voltammetry (CV) and differential pulse voltammograms (DPV). The electrooxidation of dopamine could be catalyzed by Fc/Fc+ couple as a mediator and had a higher electrochemical response due to the unique performance of GNPs/CDSH-Fc. The anodic peaks of DA and ascorbic acid (AA) in their mixture can be well separated by the prepared electrode. Under optimum conditions linear calibration graphs were obtained over the DA concentration range 2.0 × 10- 6 to 5.0 × 10 - 5 M with a correlation coefficient of 0.998 and a detection limit of 9.0 × 10- 8 M (S/N = 3). The modified electrode had been effectively applied for the assay of DA in dopamine hydrochloride injections. This work provides a simple and easy approach to selectively detect DA in the presence of AA. © 2011 Elsevier B.V. All rights reserved. Number of references:50 Main heading:Brain Controlled terms:Absorption spectroscopy - Cyclic voltammetry - Electrochemistry - Electrooxidation - Fourier transforms - Iron compounds - Ketones - Nanocomposites - Nanoparticles - Organic acids - Platinum - Transmission electron microscopy Uncontrolled terms:Anodic peaks - Ascorbic acids - Concentration ranges - Correlation coefficient - Detection limits - Differential pulse voltammograms - Dopamine - Electrochemical response - Ferrocenes - Fourier transform infrared spectra - Functionalized - Gold nanoparticles - Inclusion complex - Linear calibration - Modified electrodes - Optimum conditions - Platinum electrodes - UV-visible absorption spectroscopy Classification code:933 Solid State Physics - 921.3 Mathematical Transformations - 804.1 Organic Compounds - 801.4.1 Electrochemistry - 801 Chemistry - 761 Nanotechnology - 741.3 Optical Devices and Systems - 741 Light, Optics and Optical Devices - 708 Electric and Magnetic Materials - 547.1 Precious Metals - 461.1 Biomedical Engineering DOI:10.1016/j.msec.2011.04.002 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20114014404613 Title:Hydraulic performance analysis and model test of a sump shared by two pumps in a column Authors:Lu, Weigang (1); Zhu, Honggeng (1); Zhang, Rentian (2); Yao, Linbi (2) Author affiliation:(1) College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, China; (2) Jiangsu Surveying and Design Institute of Water Resource Co., Ltd., Yangzhou, China Corresponding author:Lu, W. Source title:Proceedings - 2011 7th International Conference on Natural Computation, ICNC 2011 Abbreviated source title:Proc. - Int. Conf. Nat. Comput., ICNC Volume:4 Monograph title:Proceedings - 2011 7th International Conference on Natural Computation, ICNC 2011 Issue date:2011 Publication year:2011 Pages:2108-2111 Article number:6022570 Language:English ISBN-13:9781424499533 Document type:Conference article (CA) Conference name:2011 7th International Conference on Natural Computation, ICNC 2011 Conference date:July 26, 2011 - July 28, 2011 Conference location:Shanghai, China Conference code:86795 Sponsor:Coll. Inf. Sci. Technol. Donghua Univ. Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States Abstract:Three-dimensional incompressible Navier-Stokes equations closed by RNG κ-Ε turbulent model were adopted to simulate the internal flow of a sump shared by two cooling pumps. Computed results show that the bottom slop of the forbay and asymmetric operation scheme of pump sets will result in unfavorable flow conditions, and swirl angles of flow entering the suction pipe of pump are quantitatively analyzed. Since two pumps share a sump in a column, the auxiliary cooling pump in front will interfere with the flow fields of the sump, which is not favorable to the flow conditions of the main cooling pump. Three operation schemes with or without the auxiliary cooling pump were simulated to compare the influence of the flow fields of sump on the flow conditions of the main cooling pump, and the bias angles of flow entering the suction pipe are quantitatively calculated. The validity and reliability of numerical simulation are verified by a model test. The findings indicate that the computational fluid dynamics can be successfully applied to 3D flow of pump sump and numerical computation can provide reliable references for theoretical analyses, model test and modification of design scheme. © 2011 IEEE. Number of references:10 Main heading:Pumps Controlled terms:Computational fluid dynamics - Computer simulation - Cooling - Flow fields - Hydraulics - Navier Stokes equations - Three dimensional Uncontrolled terms:3D flow - Asymmetric operation - Design scheme - Flow condition - Hydraulic performance - Incompressible Navier Stokes equations - Internal flows - model test - Model tests - Numerical computations - Operation schemes - Pump sets - Pump sump - Suction pipe - sump - Swirl angles - Turbulent models - Two-pump Classification code:618.2 Pumps - 631.1 Fluid Flow, General - 632.1 Hydraulics - 641.2 Heat Transfer - 723.5 Computer Applications DOI:10.1109/ICNC.2011.6022570 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20114014404597 Title:Spatiotemporal characteristics of the vertical structure of predictability over the Northern Hemisphere Authors:Feng, Aixia (1); Wang, Qiguang (1); Gong, Zhiqiang (2); Feng, Guolin (2) Author affiliation:(1) College of Physics Science and Technology, Yangzhou University, Yangzhou, China; (2) Laboratory for Climate Studies, NCC of China Meteorological Administration, Beijing, China Corresponding author:Feng, A. Source title:Proceedings - 2011 7th International Conference on Natural Computation, ICNC 2011 Abbreviated source title:Proc. - Int. Conf. Nat. Comput., ICNC Volume:4 Monograph title:Proceedings - 2011 7th International Conference on Natural Computation, ICNC 2011 Issue date:2011 Publication year:2011 Pages:2341-2344 Article number:6022554 Language:English ISBN-13:9781424499533 Document type:Conference article (CA) Conference name:2011 7th International Conference on Natural Computation, ICNC 2011 Conference date:July 26, 2011 - July 28, 2011 Conference location:Shanghai, China Conference code:86795 Sponsor:Coll. Inf. Sci. Technol. Donghua Univ. Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States Abstract:Based on nonlinear prediction and NCEP/NCAR monthly multi-level geopotential heights, spatial heterogeneity of predictability was obtained over the Northern Hemisphere. On the whole, the predictability is high in continental and higher levels and low in oceans and lower levels from seasonal to interannual timescale. The predictability of the seasonal time scale is similar with the seasonal to interannual timescale. When it goes to the interannual time scale, the predictability becomes high in lower troposphere and low in mid-upper troposphere contrary to the formers. And on the whole the interannual trend is more predictable than the seasonal trend. The strength of the seasonal cycle plays a great role in the heterogeneity of predictability which is proved true by spectrum analysis. Other reasons maybe the properties of the atmospheric air, topographic forcing and timescale interactions. © 2011 IEEE. Number of references:14 Main heading:Troposphere Controlled terms:Spectrum analysis Uncontrolled terms:Atmospheric air - Geopotential height - Interannual - Interannual time scale - Lower troposphere - Multi-level - NCEP/NCAR - Nonlinear prediction - Northern Hemispheres - predictability - Seasonal cycle - Seasonal trends - Spatial heterogeneity - Spatiotemporal characteristics - Time-scales - Topographic forcing - Vertical structures Classification code:443.1 Atmospheric Properties - 921 Mathematics - 941 Acoustical and Optical Measuring Instruments - 942 Electric and Electronic Measuring Instruments - 943 Mechanical and Miscellaneous Measuring Instruments - 944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments DOI:10.1109/ICNC.2011.6022554 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20114014401082 Title:Analogue-dynamical prediction of numerical model errors based on principal component analysis Authors:Wang, Qiguang (1); Aixia Feng (1); Feng, Guolin (2); Zhihai Zheng (2) Author affiliation:(1) College of Physics Science and Technology, Yangzhou University, Yangzhou, China; (2) Laboratory for Climate Studies, NCC of China Meteorological Administration, Beijing, China Corresponding author:Wang, Q. Source title:Proceedings - 2011 8th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2011 Abbreviated source title:Proc. - Int. Conf. Fuzzy Syst. Knowl. Discov., FSKD Volume:2 Monograph title:Proceedings - 2011 8th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2011 Issue date:2011 Publication year:2011 Pages:787-790 Article number:6019688 Language:English ISBN-13:9781612841816 Document type:Conference article (CA) Conference name:2011 8th International Conference on Fuzzy Systems and Knowledge Discovery, FSKD 2011, Jointly with the 2011 7th International Conference on Natural Computation, ICNC'11 Conference date:July 26, 2011 - July 28, 2011 Conference location:Shanghai, China Conference code:86748 Sponsor:Coll. Inf. Sci. Technol. Donghua Univ. Publisher:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States Abstract:A new prediction error correction scheme based on 74 circulation characteristics data provided by Weather Diagnostic Forecasting Division of National Climate Center, which is designed to develop the Operational Numerical Forecast Model (ONFM) of the National Climate Center of China, and the skill level of the precipitation prediction for rainy season in the mid-lower reaches (MLR) of the Yangtze River by ONFM is obviously raised. The approach use principal component(PC) analysis to prediction error of ONFM. And we used different factors to correct the different PCs of the error of precipitation field. The comparative study results indicate that the effectiveness of the new analogue error correction (AEC) scheme is better than system error correction (SEC) scheme. © 2011 IEEE. Number of references:16 Main heading:Principal component analysis Controlled terms:Climate models - Error correction - Fuzzy systems - Microcomputers - Numerical methods - Weather forecasting Uncontrolled terms:Comparative studies - FORECAST model - Numerical models - Prediction errors - Principal component - Principal Components - Rainy seasons - Skill levels - Yangtze River Classification code:443 Meteorology - 721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory - 722.4 Digital Computers and Systems - 921.6 Numerical Methods - 922.2 Mathematical Statistics - 961 Systems Science DOI:10.1109/FSKD.2011.6019688 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20114114409196 Title:Synthesis of porous Fe Authors:Zhu, Maiyong (1); Diao, Guowang (1) Author affiliation:(1) College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China Corresponding author:Diao, G.(gwdiao@yzu.edu.cn) Source title:Journal of Physical Chemistry C Abbreviated source title:J. Phys. Chem. C Volume:115 Issue:39
Issue date:October 6, 2011 Publication year:2011 Pages:18923-18934 Language:English ISSN:19327447 E-ISSN:19327455 Document type:Journal article (JA) Publisher:American Chemical Society, 2540 Olentangy River Road, P.O. Box 3337, Columbus, OH 43210-3337, United States Abstract:Porous magnetite (Fe Yüklə 2,34 Mb. Dostları ilə paylaş:
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