Title: Exciton binding energy and excitonic absorption spectra in a parabolic quantum wire under transverse electric field
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Uncontrolled terms:Acoustic Doppler Current Profilers - Axial-velocity distribution - Conversion methods - Cross section - Design demands - Electrical motors - Energy performance - Field test - Five-hole probe - Input power - Large pumping station - Model efficiency - Operation parameters - Pump discharge - Pumping stations - Size effects - Water pump 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 - 731.3 Specific Variables Control - 711.1 Electromagnetic Waves in Different Media - 618.2 Pumps - 446 Waterworks - 423.2 Non Mechanical Properties of Building Materials: Test Methods DOI:10.3969/j.issn.1674-8530.2011.04.010 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20113214216578 Title:Dynamic rheological properties of modified asphalt based on linear viscoelastic range Authors:Guo, Yongmei (1); Ni, Fujian (1); Xiao, Peng (2) Author affiliation:(1) School of Transportation, Southeast University, Nanjing, Jiangsu 210096, China; (2) College of Architecture Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China Corresponding author:Guo, Y.(gym_yz@163.com) Source title:Jiangsu Daxue Xuebao (Ziran Kexue Ban)/Journal of Jiangsu University (Natural Science Edition) Abbreviated source title:Jiangsu Daxue Xuebao Ziran Kexue Ban J. Jiangsu Univ. Nat. Sci. Ed. Volume:32 Issue:4
Issue date:July 2011 Publication year:2011 Pages:460-463 Language:Chinese ISSN:16717775 CODEN:JDXZA6 Document type:Journal article (JA) Publisher:Journal of Jiangsu University (Natural Science Edition), 30 Mengxiyuan Lane, Zhenjiang, 212003, China Abstract:In order to compare the rheological properties of different modified asphalts in a wide frequency range, base asphalt and four kinds of modified asphalts of Styrene-Butadiene-Styrene (SBS), high-elasticity, high-viscosity and high-strength asphalts were determined by dynamic mechanical analysis (DMA). By strain sweep test, it is found that the linear viscoelastic range of several modified asphalts is lower than that of base asphalt for the same complex modulus value. By frequency sweep test within the linear viscoelastic range, complex modulus and phase angle master curves were constructed based on time-temperature superposition principle to identify the performance of different modified asphalts. The results show that high-elasticity modified asphalt shows a marked improvement of temperature susceptibility and elastic recoverability with the shallowest complex modulus master curve and the lowest phase angle. High-viscosity and SBS modified asphalts have similar rheological properties, while the high-tempe-rature performance of the former is better than that of the latter. High-strength modified asphalt has the biggest complex modulus in full frequency range with the best rutting-resistance. Number of references:9 Main heading:Asphalt Controlled terms:Butadiene - Dynamic analysis - Dynamic mechanical analysis - Dynamics - Elasticity - Rheology - Styrene - Viscosity Uncontrolled terms:Base asphalt - Complex modulus - Frequency ranges - Frequency sweep - High viscosities - High-strength - Linear viscoelastic - Master curve - Modified asphalts - Phase angles - Recoverability - Rheological property - SBS-modified asphalt - Styrene butadiene styrenes - Sweep tests - Temperature susceptibility - Time-temperature superposition principles - Wide frequency range Classification code:411.1 Asphalt - 421 Strength of Building Materials; Mechanical Properties - 422.2 Strength of Building Materials : Test Methods - 804.1 Organic Compounds - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids DOI:10.3969/j.issn.1671-7775.2011.04.017 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20113114199536 Title:Microstructure and corrosion resistance properties of internal thread during cold extrusion for Q460 high strength steel Authors:Miao, Hong (1); Zuo, Dun-Wen (2); Wang, Min (2); Zhang, Rui-Hong (1); Wang, Shu-Hong (3) Author affiliation:(1) College of Mechanical Eng., Yangzhou Univ., Yangzhou 225000, China; (2) Mechanical Eng. Inst., Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016, China; (3) Office of the Military Representatives from PLA to No. 511 Factory, Nanjing 210016, China Corresponding author:Miao, H.(mh0514@163.com) Source title:Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition) Abbreviated source title:Sichuan Daxue Xuebao (Gongcheng Kexue Ban) Volume:43 Issue:4
Issue date:July 2011 Publication year:2011 Pages:209-214 Language:Chinese ISSN:10093087 CODEN:SXGKFI Document type:Journal article (JA) Publisher:Editorial Department of Journal of Sichuan University, 24 South Section, 1, Yihuan Rd., Chengdu, 610065, China Abstract:According to the forming process of cold-extruded internal thread, the microstructure at the surface of cold-extruded internal thread was investigated. The corrosion resistance was analyzed from the changing perspective of surface status of cold-extruded internal thread. The results showed that the fibrous structure of the metal surfaces on the root of thread was pressed and refined to distinguish the grains difficultly. The metal structure appeared to be streamline type and distributed along the normal direction of the tooth surface. The hardening layers of cold-extruded internal thread had an adverse effect on corrosion, and it reduced corrosion degree at the surface of the sample in the same corrosive environment, and mostly avoided producing corrosion pits to cause local stress concentration. Cold-extruded internal thread had better corrosion resistance. Number of references:13 Main heading:Corrosion resistance Controlled terms:Extrusion - High strength steel - Microstructure - Normal distribution - Stress concentration Uncontrolled terms:Adverse effect - Cold extrusion - Corrosion degree - Corrosion pits - Corrosive environment - Fibrous structures - Forming process - Internal threads - Local stress concentration - Metal structures - Metal surfaces - Normal direction - Resistance properties - Thread - Tooth surface Classification code:933 Solid State Physics - 922.1 Probability Theory - 545.3 Steel - 951 Materials Science - 539.1 Metals Corrosion - 422 Strength of Building Materials; Test Equipment and Methods - 421 Strength of Building Materials; Mechanical Properties - 535.2.2 Metal Forming Practice Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc. Accession number:20112113998110 Title:On the relationship between quadratic polynomial differential system and the Bernoulli equation Authors:Zhou, Zhengxin (1) Author affiliation:(1) Department of Mathematics, Yangzhou University, Yangzhou 225002, China Corresponding author:Zhou, Z.(zxzhou@yzu.edu.cn) Source title:Applied Mathematics and Computation Abbreviated source title:Appl. Math. Comput. Volume:217 Issue:21
Issue date:July 1, 2011 Publication year:2011 Pages:8716-8721 Language:English ISSN:00963003 CODEN:AMHCBQ Document type:Journal article (JA) Publisher:Elsevier Inc., 360 Park Avenue South, New York, NY 10010, United States Abstract:In this article, we have established a relationship between a quadratic polynomial differential system and a Bernoulli equation by using the method of reflective function. And applied the results to discuss the qualitative behavior of solutions of this quadratic polynomial differential system. © 2011 Elsevier Inc. All rights reserved. Number of references:10 Main heading:Polynomials Controlled terms:Differential equations Uncontrolled terms:Bernoulli equations - Differential systems - Periodic solution - Polynomial system - Quadratic polynomial - Qualitative behavior - Reflecting function Classification code:921.1 Algebra - 921.2 Calculus DOI:10.1016/j.amc.2011.03.118 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112214024629 Title:Thickness dependence of positive exchange bias in ferromagnetic/ antiferromagnetic bilayers Authors:Xu, Xiao-Yong (1); Gao, Yu-Jie (1); Wang, Yei-Li (1); Hu, Jing-Guo (1) Author affiliation:(1) School of Physics Science and Technology, Yangzhou University, No. 180, Siwangting Road, Yangzhou City 225002, China; (2) School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China Corresponding author:Xu, X.-Y.(xxy@yzu.edu.cn) Source title:Solid State Communications Abbreviated source title:Solid State Commun Volume:151 Issue:13
Issue date:July 2011 Publication year:2011 Pages:952-955 Language:English ISSN:00381098 CODEN:SSCOA4 Document type:Journal article (JA) Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom Abstract:For the ferromagnetic (FM)/antiferromagnetic (AFM) bilayers, both negative and positive exchange bias HE have been observed for low and high cooling field HCF, respectively. The thickness dependence of HE and coercivity HC have been investigated for the cases of negative and positive HE. It is found that the negative HE and the positive one have similar FM thickness dependence that is attributed to the interfacial nature of exchange bias. However, the AFM thickness dependence of positive HE is completely contrary to that of the negative one, which clearly demonstrates that the AFM spins play different roles for the cases of positive and negative HE. In particular, the AFM thickness of positive HE was first highlighted by an AFM spin canting model. These results should be attributed to the interfacial spin configuration after field cooling procedure. © 2011 Elsevier B.V. All rights reserved. Number of references:25 Main heading:Antiferromagnetic materials Controlled terms:Antiferromagnetism Uncontrolled terms:AFM - Antiferromagnetics - Bi-layer - C. Spin configuration - Coercivities - Cooling fields - D. Exchange bias - Exchange bias - Field cooling - Interfacial spins - Spin-canting - Thickness dependence Classification code:708.4 Magnetic Materials DOI:10.1016/j.ssc.2011.03.035 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20111113757884 Title:Perturbations and expressions for generalized inverses in Banach spaces and Moore-Penrose inverses in Hilbert spaces of closed linear operators Authors:Huang, Qianglian (1); Zhai, Wenxiao (1) Author affiliation:(1) College of Mathematics, Yangzhou University, Yangzhou 225002, China Corresponding author:Huang, Q.(qlhmath@yahoo.com.cn) Source title:Linear Algebra and Its Applications Abbreviated source title:Linear Algebra Its Appl Volume:435 Issue:1
Issue date:July 1, 2011 Publication year:2011 Pages:117-127 Language:English ISSN:00243795 CODEN:LAAPAW Document type:Journal article (JA) Publisher:Elsevier Inc., 360 Park Avenue South, New York, NY 10010, United States Abstract:The problems of perturbation and expression for the generalized inverses of closed linear operators in Banach spaces and for the Moore-Penrose inverses of closed linear operators in Hilbert spaces are studied. We first provide some stability characterizations of generalized inverses of closed linear operators under T-bounded perturbation in Banach spaces, which are exactly equivalent to that the generalized inverse of the perturbed operator has the simplest expression T+(I+δTT+)-1. Utilizing these results, we investigate the expression for the Moore-Penrose inverse of the perturbed operator in Hilbert spaces and provide a unified approach to deal with the range preserving or null space preserving perturbation. An explicit representation for the Moore-Penrose inverse of the perturbation is also given. Moreover, we give an equivalent condition for the Moore-Penrose inverse to have the simplest expression T†(I+δTT†)-1. The results obtained in this paper extend and improve many recent results in this area. © 2010 Elsevier Inc. All rights reserved. Number of references:21 Main heading:Hilbert spaces Controlled terms:Banach spaces - Mathematical operators - Topology Uncontrolled terms:Boundedness - Generalized inverse - Linear operators - Moore-Penrose inverses - Perturbation analysis Classification code:921 Mathematics DOI:10.1016/j.laa.2011.01.008 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112914157836 Title:Sodium dodecyl sulfate sensitized electrochemical method for subnanomole level determination of ortho-phenylphenol at a novel disposable electrode Authors:Li, Hongbo (1); Li, Jing (2); Meng, Dongmei (1); Peng, Jinyun (1); Qiao, Qiuju (1); Yang, Zhanjun (1); Xu, Qin (1); Hu, Xiaoya (1) Author affiliation:(1) College of Chemistry and Engineering, Yangzhou University, Yangzhou 225002, China; (2) Chemistry and Biology Engineering School, Yancheng Institute of Technology, Yancheng 224051, China Corresponding author:Hu, X.(xyhu@yzu.edu.cn) Source title:Science China Chemistry Abbreviated source title:Sci. China Chem. Volume:54 Issue:7
Issue date:July 2011 Publication year:2011 Pages:1116-1122 Language:English ISSN:16747291 CODEN:SCCCCS Document type:Journal article (JA) Publisher:Science in China Press, 16 Donghuangchenggen North Street, Beijing, PR 100717, China Abstract:The electrochemical behavior of ortho-phenylphenol (OPP) at a disposable electrode (an improved wax-impregnated graphite electrode) in the presence of sodium dodecyl sulfate (SDS) was studied for the first time. The results demonstrated that the electrocatalytic oxidation process of OPP was accompanied with two-charge-two-proton transference. The electronic transmission coefficient (α) and diffusion coefficient (D Number of references:42 Main heading:Electrochemical electrodes Controlled terms:Electrocatalysis - Graphite electrodes - Sodium - Sodium sulfate Uncontrolled terms:determination - Disposable electrodes - electrochemical - ortho-phenylphenol - sodium dodecyl sulfate Classification code:549.1 Alkali Metals - 704.1 Electric Components - 802.2 Chemical Reactions - 804.2 Inorganic Compounds DOI:10.1007/s11426-011-4264-4 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112114009014 Title:Synthesis of Sn-doped ZnO nanorods and their photocatalytic properties Authors:Wu, Changle (1); Shen, Li (2); Yu, Huaguang (1); Huang, Qingli (1); Zhang, Yong Cai (2) Author affiliation:(1) Testing Center of Yangzhou University, Yangzhou 225009, China; (2) Key Laboratory of Environmental Material and Environmental Engineering of Jiangsu Province, College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China Corresponding author:Wu, C.(wcl20021@yahoo.com.cn) Source title:Materials Research Bulletin Abbreviated source title:Mater Res Bull Volume:46 Issue:7
Issue date:July 2011 Publication year:2011 Pages:1107-1112 Language:English ISSN:00255408 CODEN:MRBUAC Document type:Journal article (JA) Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom Abstract:Sn-doped ZnO nanorods were fabricated by a hydrothermal route, and characterized by X-ray diffraction, field emission scanning electron microscope, UV-vis spectroscopy, Raman spectra, solid-state nuclear magnetic resonance (NMR) spectra, and room temperature photoluminescence spectroscopy. Solid-state NMR result confirms that Sn4+ was successfully incorporated into the crystal lattice of ZnO. Room temperature photoluminescence showed that all the as-synthesized products exhibited a weak UV emission (380 nm) and a strong visible emission (540 nm), but the intensities of the latter emission increased with increase in Sn concentration. The improvement of visible emission at 540 nm in the Sn-doped ZnO samples was suggested to be a result of the lattice defects increased by doping of Sn in zinc oxide. In addition, the photocatalytic studies indicated that Sn-doped ZnO nanorods are a kind of promising photocatalyst in remediation of water polluted by some chemically stable azo dyes. © 2011 Elsevier Ltd. All rights reserved. Number of references:30 Main heading:Tin Controlled terms:Azo dyes - Doping (additives) - Field emission - Hydrothermal synthesis - Nanorods - Nuclear magnetic resonance - Nuclear magnetic resonance spectroscopy - Optical properties - Photoluminescence - Photoluminescence spectroscopy - Raman spectroscopy - Resonance - Scanning electron microscopy - Ultraviolet spectroscopy - X ray diffraction - Zinc oxide Uncontrolled terms:A. oxides - B. chemical synthesis - C. nuclear magnetic resonance (NMR) - D. optical properties - Field emission scanning electron microscopes - Hydrothermal routes - Lattice defects - Photo-catalytic - Photocatalytic property - Raman spectra - Room-temperature photoluminescence - Sn concentration - Sn-doped - Solid state NMR - Solid-state nuclear magnetic resonance - UV emissions - UV-vis spectroscopy - Visible emissions - ZnO - ZnO nanorod Classification code:933.1.1 Crystal Lattice - 933 Solid State Physics - 932.2 Nuclear Physics - 932 High Energy Physics; Nuclear Physics; Plasma Physics - 804.2 Inorganic Compounds - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801 Chemistry - 761 Nanotechnology - 741.3 Optical Devices and Systems - 741.1 Light/Optics - 701 Electricity and Magnetism - 546.2 Tin and Alloys DOI:10.1016/j.materresbull.2011.02.043 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20112114009013 Title:Formation of novel morphologies of aragonite induced by inorganic template Authors:Wang, Xiaoming (1); Nan, Zhaodong (1) Author affiliation:(1) College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, Jiangsu, China Corresponding author:Nan, Z.(zdnan@yzu.edu.cn) Source title:Materials Research Bulletin Abbreviated source title:Mater Res Bull Volume:46 Issue:7
Issue date:July 2011 Publication year:2011 Pages:1130-1138 Language:English ISSN:00255408 CODEN:MRBUAC Document type:Journal article (JA) Publisher:Elsevier Ltd, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom Abstract:A glass-slice was used as a template to induce formation and assembly of aragonite. Thermodynamic theory was applied to explain the production of the aragonite. Transformation of three-dimensional nucleation to template-based two-dimensional surface nucleation caused the production of aragonite. Hemisphere, twinborn hemisphere and flower-shaped particles were produced by direction of the glass-slices. Planes were always appeared in these as-synthesized samples because the nucleation and the growth of these samples were adsorbed at the surfaces of the glass-slices. The formation mechanism of the as-formed sample was proposed. Compared with organic template, the present study provides a facile method to apply inorganic template to prepare functional materials. © 2011 Elsevier Ltd. All rights reserved. Number of references:19 Main heading:Carbonate minerals Controlled terms:Crystal growth - Functional materials - Glass - Inorganic compounds - Nucleation - Two dimensional - X ray diffraction Uncontrolled terms:A. Inorganic compound - B. Crystal growth - C. X-ray diffraction - Facile method - Flower-shaped - Formation mechanism - Inorganic templates - Organic templates - Template-based - Thermodynamic theory - Two-dimensional surface Classification code:951 Materials Science - 933.1.2 Crystal Growth - 933.1.1 Crystal Lattice - 902.1 Engineering Graphics - 812.3 Glass - 804.2 Inorganic Compounds - 482.2 Minerals DOI:10.1016/j.materresbull.2011.01.028 Database:Compendex Compilation and indexing terms, Copyright 2011 Elsevier Inc.
Accession number:20113014176563 Title:Experimental research on bracket set models of Yingxian Timber Pagoda Authors:Yuan, Jianli (1); Chen, Wei (1); Wang, Jue (1); Shi, Ying (1) Author affiliation:(1) College of Architectural Science and Engineering, Yangzhou University, Yangzhou 225009, China Corresponding author:Yuan, J.(yjl@yzu.edu.cn) Source title:Jianzhu Jiegou Xuebao/Journal of Building Structures Abbreviated source title:Jianzhu Jiegou Xuebao Volume:32 Issue:7
Issue date:July 2011 Publication year:2011 Pages:66-72 Language:Chinese ISSN:10006869 CODEN:JJXUD2 Document type:Journal article (JA) Publisher:Science Press, 18,Shuangqing Street,Haidian, Beijing, 100085, China Abstract:This research selected the representative bracket sets (Dougong) of Yingxian Timber Pagoda as the investigating object and adopted physical model testing method to examine the load transferring mechanism and deformation characteristic of the bracket sets. Appropriate mechanical parameters for the construction of the simplified bracket model were proposed. In this experimental research, three typical bracket sets at the key positions of the pagoda, which were the bracket set on column, bracket set between columns, and bracket set at corner, were made into the archetypal models by the scale of 1:3. By means of vertical loading test, the N-Δ Yüklə 2,34 Mb. Dostları ilə paylaş:
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