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Online since: October 2008
Authors: R. Mitra, N. Eswara Prasad, Arvind K. Srivastava, K. Chattopadhyay, Kalyan Kumar Ray
Eswara Prasad2,e 1 Departmemt of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur -721302, West Bengal, INDIA 2 Defence Metallurgical Research Laboratory, Hyderabad - 500058 a rahul@metal.iitkgp.ernet.in, bmkaushikc@yahoo.com, carvind_mt@yahoo.co.in, d kkrmt@metal.iitkgp.ernet.in, eneswarap@rediffmail.com Keywords: Molybdenum dislicide, Niobium Silicide, Composite, Fracture Toughness, Flexural Strength, Elevated Temperature Yield Strength.
The high temperature oxidation resistance of the investigated materials has been discussed in detail elsewhere [35-37].
Mechanical properties of molybdenum and niobium silicide based materials.
Stoloff, in: Fatigue and fracture of ordered intermetallic materials: I, edited by W.
Buch: Pure metals properties: a scientific technical handbook, p. 176 (ASM International, Materials Park, OH 44073, USA 1999)
Online since: June 2019
Authors: Tobias Elwert, Axel Schmidt, Fabian Mestmäcker, Lisa Brückner, Jochen Strube
Chinese Journal of Chemical Engineering 20 (1):36–39 [46] Zhou Z, Qin W, Fei W. 2011.
Synthetic inorganic ion-exchange materials.
Chemical Engineering Journal 332:160–68 [73] Rona M, Schmuckler G. 1973.
Synthetic Inorganic Ion-exchange Materials.
Synthetic inorganic ion-exchange materials.
Online since: May 2011
Authors: Ying Qian Song, Rui Fan, Wei Ding Long
Experimental research on performance of Water-Cooled VRF system in winter in Shanghai Song Yingqian1, a, Fan Rui2,b and Long Weiding3,c 1 Tongji university, College of Mechanical Engineering, Shanghai 201804, China 2 Tongji university, Sino-German College of Applied Sciences, Shanghai 200092, China 3 Tongji university, Sino-German College of Applied Sciences, Shanghai 200092, China asongyingqian@163.com, b fan_rui@163.com, cweidinglong163@163.com Keywords: Water-Cooled VRF system; Performance analysis; experimental research.
The pipe material is PE and pipe diameter is DN25.
Therefore, detailed analysis and evaluation of operating parameters and energy parameters of the entire air conditioning system is the key step to analyze the equipment performance.
Online since: May 2014
Authors: Xiao Mei Zhang, Hong Zhan Li, Man Li Cao, Chao Yue Chen
Synthesis, Adsorption Behavior of a Maleamic Acid Cross-linked β- Cyclodextrin Polymer for Removal of Basic Fuchsin in Aqueous Solution Xiao-mei ZHANG*, Hong-zhan LI, Man-li CAO, Chao-yue CHEN Department of Chemical and Engineering, Anhui University of Science and Technology, Shungeng Middle Road 168, Huainan 232001, Anhui, People’s Republic of China.
As a kind of potential efficient adsorption material used to remove organic pollutants from water, water-insoluble β-cyclodextrin (β-CD) based polymers have developed fast in the pass two decades [6-16], due to their properties of forming inclusion complexes with a wide variety of organic compounds in β-CD hydrophobic cavity and existing non-inclusion binding sites within framework of the polymers [17].
The adsorption parameters for Freundlich and Langmuir’s isotherm at different temperatures Model Parameters Temperature /K 288 298 308 Freundlich KF 9.090 8.736 8.535 1/n 0.2616 0.2932 0.3412 R2 0.922 0.931 0.920 Langmuir Qma /mg.g-1 26.34 29.33 33.56 KL/L×mg-1 0.326 0.229 0.200 RL 0.133 0.179 0.200 R2 0.999 0.995 0.993 Qmb /mg.g-1 25.47 28.08 31.51 Qma : calculated values ; Qmb : experimental data As displayed in Fig.6, Fig.7 and Table 1, adsorption equilibrium data of BF at different temperatures under the concentration range studied fitted the Langmuir’s model well, with the correlation coefficients of R2 > 0.993 and the small deviation of Qm between calculated and tested data, which suggested that some homogeneity in the surface of PCD would play a key role in BF adsorption and the adsorption of BF on to PCD would be a monomolecular layer adsorption.
Online since: December 2014
Authors: Yang Lu, Xing Lai Ge, Ya Fei Wang, Yong Xin Li
Characteristic Performance Analysis of Traction Motor on EMU with Broken Bars Using FEM Yongxin Li1,a,Yafei Wang1,b,Xinglai Ge1 ,Yang Lu2 1Electrical Engineering School of Southwest Jiaotong University, Chengdu, 610031, China 2Locomotive & Car Research Institute, China Academy of Railway Sciences, Beijing, 100081, China amingfengzhige@163.com,bgaichuguile@163.com Keywords: traction motor in EMU; broken-bar fault; magnet field in motor; characteristic components; finite element method (FEM).
Since traction motor is one of the key parts in EMU, it’s significant to study the fault identification.
Fundamental Equation The 2-D model of the motor is employed, and the fundamental equation describing the space and time variations of the vector potential over the region of analysis is shown as following: (1) Where D is the region of analysis, Γ1 is the outside circumferential of the stator and inside circumferential of the rotor (the Dirichlet boundary conditions), Jz is the axial current density, σ is the conductivity of the conductors, Az is magnetic vector potential, μ is the permeability of the material.
Online since: August 2013
Authors: Shun Sheng Zhao
Near-Infrared Emitting Heterobinuclear Zn-Ln (Ln = Nd, Yb, Er,and Gd) Complexes Based on a Novel Asymmetric Schiff-base Ligand ZHAO Shun-Sheng1,a 1College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P.
Introduction Much recent effort has been devoted to design and synthesis of luminescent lanthanide (Ln) complexes with long-lived and characteristic line-like emission bands (near UV to visible and NIR regions) [1], due to their potential applications in bioassays, medicine and material science [2-4].
Acknowledgement This work is funded by the National Natural Science Foundation of China (Grant Nos 21103135 and 21073139), Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2011JQ2011), Scientific Research Program Funded by Shaanxi Provincial Education Commission (No. 12JK0622), the Open Foundation of Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecular Chemistry at Northwest University (Grant No. 2010025) and Foundation of Xi'an University of Science and Technology (Grant No. 2010QDJ030).
Online since: June 2017
Authors: Juan Mentado-Morales, Ever Peralta-Reyes, Carlos Estrada-Vázquez, Gerardo Martínez-Villa, Mario E. Cordero, Luis G. Zárate, Alejandro Regalado-Méndez
The use of this experimental design methodology is very economical, allows extraction of the maximum amount of complex information, and saves on significant experimental time, material used for analyses and personnel cost.
Response Surface Methodology (RSM) RSM is a collection of statistical and mathematical methods that are useful for the modeling and analysis of engineering problems.
By using RSM, it was possible to study the effect of key parameters on biodiesel yield.
Online since: December 2014
Authors: Xiao Hong Ge, Yu Kun Zheng, Lian Ge Ouyang
Design and Simulation about Linkage of Caterpillar Beach Cleaner’s graps Yukun Zheng a, Xiaohong Ge * and Liange Ouyang School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China azykfiller@163.com Keywords: Linkages, Flex Body File, Rigid-Flexible Coupling.
After establishing finite element model of the flexible connecting rod mechanism, the Q345’ s material properties were given to connecting rod mechanism.
Selected the external connection point corresponding ADAMS model key point, replaced the original rigid model of connecting rod mechanism with flexible body model conversion of it, generated rigid-flexible coupling model, as shown in figure 4, after the flexible body replaced a rigid body, constraint of flexible connecting rod mechanism and rigid parts was supposed to be reset Fig. 3 The external node and the rigid region of the connecting rod mechanism Fig.4 The rigid- flexible coupling model Since the power source of the grab machine came from the hydraulic cylinder, so we set moving deputy-driver in the three hydraulic cylinders.
Online since: September 2013
Authors: Zhan Li Li, Xiang Ting He
Then it has the recognition and high adaptability of the operation object, such as grab and distinguish the different shape, different size and different quality of material object, which improve the ability that can contact with the surrounding environment directly.
The objective function is the key to the whole optimization design.
Fleming, “ Multiobjective genetic algorithms made easy: selection, sharing and mating restriction,” In 1st IEE/IEEE International Conference on Genetic Algorithms in Engineering systems, Sheffield, England, 1995
Online since: April 2012
Authors: Shu Yan Wang, Yong Ping Xia, Li Liu
Effects of sodium citrate on MAO process and characteristics of coatings fabricated on AZ91D magnesium alloy Shuyan Wang1, a,*, Yongping Xia1, b, Li Liu1, c 1Provincial Key Lab of Advanced Welding Technology, Jiangsu University of Science and Technology, Zhenjiang, 212003, China awsy101010@126.com, bxypnjit@163.com, cliulielvis@126.com Keywords: magnesium alloy; microarc oxidation; electrolyte; corrosion resistance Abstract.
Caton, Magnesium-an old material with new applications, Mater.
Dowey, Plasma electrolysis for surface engineering, Surf.
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