Search Options

Sort by:

Publication Type:

Open access:

Publication Date:

Periodicals:

Search results

Online since: May 2013
Authors: Yuan Kang, Tse Yi Tu, Chun Chieh Wang
The Performance Analysis and Prognosis Techniques of Gearbox Chun-Chieh Wang1, a,Yuan Kang2,b,Tse-Yi Tu3,c 1Industrial Technology Research Institute, Hsinchu, Taiwan 2Department of Mechanical Engineering, Chung Yuan Christian University, Chungli, Taiwan 3Department of Electrical and Control Engineering, National Chiao Tung University, Hsinchu, Taiwan ajei0513@gmail.com, byk@cycu.edu.tw, ctu.tseyi@gmail.com Keywords:Principal components analysis, logistic regression, autoregressive moving average, self-organizing map.
The key is to solve variance and use the methods for eigenvalue and eigenvector to pick the type of the largest variance.
,“Gear pitting corrosion fault diagnosis based on local mean decomposition,” Advanced Materials Research, Vol.562-564 (2012), pp.812-815 [3]Chen, H.
Online since: March 2015
Authors: Yong Qu, Jian Jun Zhang, Ye Xin Song
A Residual Variance Based Discriminant Function and Its Algorithm Jianjun Zhanga, Yexin Songb and Yong Quc College of Science, Naval University of Engineering, Wuhan, 430033, China awahh0912@163.com, byxsong@21cn.com, cqqqyyy0821@21cn.com Keywords: Time series analysis, fault diagnosis, autoregressive model, residual variance, discriminant function, time complexity Abstract.
The introduction of smart materials in sensory equipment, accompanied by advances in information handling techniques, has contributed to the evolution of health assessment strategies coincident with increased dynamic systems complexity [1].
It can also be directly constructed by the parameters or the characteristic of the model, the key of which is the constructed functions have stronger discriminant ability.
Acknowledgements This work is supported partially by the Natural Science Foundation of Naval University of Engineering under Grant No.
Online since: October 2014
Authors: Ondřej Vašíček, Jan Česelský, Martin Budina, Tomáš Nehudek
Factors affecting the attractiveness of the area for individual housing Ondřej Vašíček1, a *, Martin Budina2, b, Tomáš Nehudek3, c, Jan Česelský, 4, d 1,2,3,4 VŠB – Technical University of Ostrava, Faculty of Civil Engineering, Ludvíka Podéště 1875/17, 708 33 Ostrava-Poruba, Czech republic aondrej.vasicek@vsb.cz, bmartin.budina@vsb.cz, ctomas.nehudek@vsb.cz, djan.ceselsky@vsb.cz Keywords: suburbs, residential housing, agglomeration, attractiveness of the area Abstract.
This study is based on detailed assessments and evaluations of 10 key categories and 39 criteria or factors, each of which has its weights according to their importance [1].
Through building of technical infrastructure, inputs and distribution of various forms of energy, materials, communications, transportation, removal and elimination of the waste are implemented [6].
Table 3: The dependency rate of individual factors on the overall attractiveness of the area Category Criterion Thedependency ratio / weight Civic amenities (presence of each species in the seat) Kindergarden 4,55% Primary school 4,67% Post 4,15% Grocery 5,26% General practitioner / pediatrician 4,38% Sports facilities 4,02% Catering facilities (restaurant, inn, cafe, etc.) 3,97% Engineering networks (capacity and connections in the seat) Electrical network 6,19% Water supply 6,07% Gas pipeline 5,25% Sewer pipeline 5,69% Telecommunication network 6,14% Transport accessibility of the locations Connection location to public urban / interurban transport 5,02% Accesability to core city 5,48% Quality of the environment Air quality 6,05% Noise 6,01% Radon 6,02% Surrounding countryside Surrounding built-up area 5,40% Connection with the natural landscape, recreation areas 5,68% TOTAL 100,00% The level of dependence of individual factors on the overall attractiveness of the area in the hinterlands
Online since: February 2011
Authors: Fan Jiang, Yue Zeng Xu
So the flood discharge problem becomes the dangerous source of the small reservoir, and also becomes the key problem of the flood prevention work.
Selection of materials. 1) the shell of the draining pump is made by wilding using high-strength steel plate instead of casting using cast iron, and the type of steel material is Q345B, high-strength type 35GrMo can also be used as change from normal type 45 steel.
Material of the shell of the matched electric motor also changes to aluminum alloy.
Hu :Study on Transient Hydrodynamic performance of Mixed-Flow-Pump during Starting Period.: Journal of Zhejiang University(Engineering Science)
Online since: August 2011
Authors: Xxx Sedao, Rémi Torres, Thierry Sarnet, Philippe Delaporte, Marc Sentis
The thickness of the substrates is not optimised for solar cells but it was the only material we had to start with.
These nano-particles are re-deposited material from the ejected plume.
The key factors derived from Suns-Voc measurements are open circuit voltage Voc, pseudo fill factor pFF and pseudo efficiency pEff.
Aside from these engineering issues, there is room to improve in the technology roadmap of laser texturisation for solar cells.
Optoelectronics and Advanced Materials, Vol. 12, 2010, p. 621
Online since: August 2013
Authors: Wei Wang, Qian Liu, Zhao Xia Song, Li Sun, Ming Ju Zhao, Qiu Min Zhang, Ying Mei Xu
Improving Calorific Value and Reducing Corrosiveness of Biological Oils Ying-mei XU 1,a, Wei WANG 1, Qian LIU 2, Zhaoxia Song1, Li Sun1, Mingju Zhao 1, Qiu-min ZHANG 2,b 1 School of Biological Science of Dalian Nationalities University, Key Laboratory of the State Ethnic Affairs Commission-Ministry of Education, Dalian,China,116600 2 Dalian University of Technology, Institute of Chemical Engineering , Dalian, China,116024.
Experimental Method Raw materials and analysis.
New energy and new materials.
Online since: October 2011
Authors: Yan Xiang Wang, Jian Sun, Min Xu
Preparation of TiO2 Nanopowders by Non-hydrolytic Sol−Gel and Solvothermal Synthesis Yan-Xiang Wang 1, a, Min Xu 2,b and Jian Sun 3,c School of Material Science and Engineering, JingDeZhen Ceramic Institute, JingDeZhen, China a yxwang72@163.com Keywords: TiO2; non-hydrolytic; sol-gel synthesis; solvothermal synthesis Abstract.TiO2 nanopowders were synthesized by non-hydrolytic sol−gel synthesis and solvothermal method.
Therefor, it is a key to prepare TiO2 film at a low temperature.
The sintering temperature of nanocrystalline titanium dioxide which is one of the most common semiconductor electrode materials in DSSC is lower than 500℃ to aviod converting to rutile.
Park,“Nano-embossed Hollow Spherical TiO2 as Bifunctional Material for High-Efficiency Dye-Sensitized Solar Cells,” Adv.
Online since: December 2018
Authors: Zi Tian Fan, Guang Yu Li, Wen Ming Jiang
Characteristics and Formation Mechanism of the Interface of Mg/Al Bimetallic Composites Prepared by Lost Foam Casting Wenming Jiang1,a*, Zitian Fan1,b and Guangyu Li1,c 1State Key Lab of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, PR China.
Generally, the rolling bonding method is usually used to produce the strip material with a simple shape, while the complex parts cannot be fabricated using this method.
The expanded polystyrene (EPS) material was used to fabricate foam patterns.
Al-Samman, Superior light metals by texture engineering: Optimized aluminum and magnesium alloys for automotive applications, Acta Mater. 61 (2013) 818–843
Online since: July 2014
Authors: You Song Sun, Hong Bo Zheng
Research on Pump-controlled Servo Hydraulic Press and Its Energy Consumption Experiments Hongbo Zheng 1, a, Yousong Sun 1, b 1Faculty of Mechanical and Electronic Engineering, Guangdong Institute of Science and Technology, Zhuhai, China 2Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou, China abohongzheng@126.com, byssun@gdut.edu.cn Key words: pump-controlled; hydraulic press; servo motor; energy consumption Abstract: A solution was proposed to reform the traditional hydraulic presses by the technology of pump-controlled servo hydraulic power: PMSM(Permanent magnet synchronous servo motor ) and fixed displacement pump replaced the traditional inductive motor and fixed displacement pump as the power unit ; the electromagnetic reversing system, the rapid cylinder and the prefill system were kept; displacement sensors, pressure sensors and a proportional relief valve were added to the hydraulic system.
With the declining of the price of rare-earth permanent magnet materials, the price of PMSM becomes lower too, reforming the traditional hydraulic press driven by asynchronous motor with PMSM can realize the optimization of working process as well as save energy, the long-standing technical difficulty for the traditional hydraulic press can be solved, it is significant for the developing of forming equipments.
Online since: September 2013
Authors: Yun Xia Jiang, Hu Jin Zuo, Yong Jia Shen, Feng Ping Yi
Synthesis of 5-cyano-3-(4-chlorobutanoyl)indole in 1-buty-3-methylimidazolium chloroaluminate Jiang Yunxia1,2,a , Zuo Hujin2,b , Shen Yongjia2,c and Yi Fengping3,d 1 Nantong Agricultural Vocational Technology College, Nantong, Jiangsu 226007,China 2 Key Laboratory for Advanced Materials, Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China 3School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 200235, China ayunxia98@163.com, brambo.hero-123@163.com, cyjshen@ecust.edu.cn , dyifengping@sit.edu.cn Keywords:Friedel-Crafts acylation, ionic liquid, [bmim]Cl/AlCl3, 5-cyano-3-(4-chlorobutanoyl)indole Abstract.The Friedel-Crafts acylation reaction between 5-cyanoindole and 4-chlorobutyryl chloride was conducted in ionic liquid 1-buty-3-methylimidazolium chloroaluminate ([bmim]Cl/AlCl3), the major product was 5-cyano-3-(4- chlorobuty)indole.
Experimental Materials and instruments N-methylimidazole was purchased from Aladdin Chemistry Co.
Cheng, Friedel-Crafts acylation of anthracene with oxalyl chloride catalyzed by ionic liquid of [bmim]Cl/AlCl3.Chemical Engineering Journal.146(2009)266-269
Showing 71571 to 71580 of 74304 items