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Online since: October 2011
Authors: Ang Bao, Wei Guo Pan, Wen Huan Wang
Advances in Data Mining and Applications in Power Plants
Ang Baoa, Wei-guo Panb, Wen-huan Wangc
Department of Energy & Environment Engineering, Shanghai University of Electric Power, Shanghai, 200090, China
a365736978@163.com, bpweiguo@163.com, chuan0618@126.com
Key words: Data Mining, Power Plants, Decision Support, Rough Sets, Association Rules
Abstract: Describes the theory and methods of data mining technology, and the latest research progress home and abroad.
In the application area of process monitoring and controlling, the domestic and foreign scholars, engineers and technicians have carried on lots of beneficial exploration.
Condition monitoring and fault diagnosis in power industry has been developed rapidly in recent years and it is a new area of research which is increasingly concerned about by engineering and technical personnel in power industry-related operations, administration, research and other departments.
At present, the fault diagnosis mainly includes deterministic methods based on mathematical model, statistical methods based on statistical theory and inspired reasoning approach based on knowledge and expert system engineering.
Data Mining in Power Plant Process Control and Optimization Research [J].PowerSystem Engineering, 2003,19(2):48-50.
In the application area of process monitoring and controlling, the domestic and foreign scholars, engineers and technicians have carried on lots of beneficial exploration.
Condition monitoring and fault diagnosis in power industry has been developed rapidly in recent years and it is a new area of research which is increasingly concerned about by engineering and technical personnel in power industry-related operations, administration, research and other departments.
At present, the fault diagnosis mainly includes deterministic methods based on mathematical model, statistical methods based on statistical theory and inspired reasoning approach based on knowledge and expert system engineering.
Data Mining in Power Plant Process Control and Optimization Research [J].PowerSystem Engineering, 2003,19(2):48-50.
Online since: September 2024
Authors: Enkhtor Sukhbaatar, Erdene-Ochir Ganbold, Rentsenmyadag Dashzeveg, Munkhtsetseg Sambuu, Narkhajid Ganbold, Baasanjargal Saruultuya, Bilguun-Od Norov, Munkhjin Ganbold, Altankhuu Bayarsaikhan, Rene Tschaggelar
Raw materials namely, purely cow dung was prepared beside the "Undrakh
group" farm located in Kherlen soum in Dornod aimag (see. fig. 1).
We have prepared raw materials collecting as homogeneous cow dung with compact dense.
Plus, for slow pyrolysis in which animal originated raw materials is used, the highest temperature reaches 7000C or less [8, 13-17].
Abul Kalam, Procedia Engineering. 56 (2013) 39-53. doi:10.1016/j.proeng.2013.03.087 [4] Quicker P, Biokohle Weber K.
Muzend, South African Journal of Chemical Engineering. 24 (2017) 168-175. https://doi.org/10.1016/j.sajce.2017.10.004 [12] X.Yuan, T.
We have prepared raw materials collecting as homogeneous cow dung with compact dense.
Plus, for slow pyrolysis in which animal originated raw materials is used, the highest temperature reaches 7000C or less [8, 13-17].
Abul Kalam, Procedia Engineering. 56 (2013) 39-53. doi:10.1016/j.proeng.2013.03.087 [4] Quicker P, Biokohle Weber K.
Muzend, South African Journal of Chemical Engineering. 24 (2017) 168-175. https://doi.org/10.1016/j.sajce.2017.10.004 [12] X.Yuan, T.
Online since: August 2011
Authors: Bin Hu, Cheng Zhang, Cai Qi Zhou, Cui Hong Li, Qian Ping Lou, Qing Bao Song
Studies on Donor-Acceptor Substituted with Triphenylamine-core Fluorescent Derivatives
Cai-qi Zhou1, Bin Hu1, Cui-hong Li1, Qian-ping Lou1, Qing-bao Song1,a,* and Cheng Zhang1,b,*
1State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology
College of Chemical Engineering and Materials Science
Zhejiang University of Technology, Hangzhou, 310014, PR China
aqbsong@zjut.edu.cn, bczhang@zjut.edu.cn, *correspondence author
Keywords: D-π-A structure; triphenylamine-core; electrical and photophysical properties; N-phthalimide; coupling reaction
Abstract.
Aromatic imide (N-phthalimide) group was firstly introduced as electron acceptor in the donor-π-acceptor (D-π-A) opto-electronic materials.
Because of their high solubility and excellent thermal stability, fluorene-based materials have emerged as promising classes of organic semi- conductors in the field of organic electronics, especially in OLEDs [2-5].
Therefore, it will be interesting and meaningful to introduce imide to these materials.
All the interesting electrical and photophysical properties made these materials quite promising for the applications in OLEDs.
Aromatic imide (N-phthalimide) group was firstly introduced as electron acceptor in the donor-π-acceptor (D-π-A) opto-electronic materials.
Because of their high solubility and excellent thermal stability, fluorene-based materials have emerged as promising classes of organic semi- conductors in the field of organic electronics, especially in OLEDs [2-5].
Therefore, it will be interesting and meaningful to introduce imide to these materials.
All the interesting electrical and photophysical properties made these materials quite promising for the applications in OLEDs.
Online since: November 2018
Authors: Ejiroghene Kelly Orhorhoro, Patrick Okechukwu Ebunilo, Godwin Ejuvwedia Sadjere
J. of Thermal & Environmental Engineering, 13(2), 2016, 129-133
[12] P.O.
American Journal of Engineering Research (AJER), 6(11), pp-311-321 [19] W.
Investigation of the purification of biogas from domestic wastes using local materials in Nigeria.
Master thesis, Department of Mechanical Engineering, Faculty of Engineering, University of Benin, Benin City, Nigeria
Journal of Advanced Engineering Research, 4(1), 2017, 59-62 [35] P.O.
American Journal of Engineering Research (AJER), 6(11), pp-311-321 [19] W.
Investigation of the purification of biogas from domestic wastes using local materials in Nigeria.
Master thesis, Department of Mechanical Engineering, Faculty of Engineering, University of Benin, Benin City, Nigeria
Journal of Advanced Engineering Research, 4(1), 2017, 59-62 [35] P.O.
Online since: August 2005
Authors: D.M. Babic, Andrew Torrance, D.B. Murray
Babic, A.A.Torrance and D.B.Murray
Department of Mechanical and Manufacturing Engineering
Trinity College Dublin, Ireland
Keywords: Grinding, cooling, air jets, water mist, soap.
Results and discussion The tests were performed using AISI 1020 mild steel as the workpiece material.
The results obtained for several key grinding parameters will be now presented.
Schmid: Manufacturing processes for engineering materials, Prentice Hall, New Jersey, (2003)
Results and discussion The tests were performed using AISI 1020 mild steel as the workpiece material.
The results obtained for several key grinding parameters will be now presented.
Schmid: Manufacturing processes for engineering materials, Prentice Hall, New Jersey, (2003)
Online since: July 2011
Authors: De Kui Xu, Fei Gao
Study on Layered Fracturing String for Deep Compact Gas Reservoirs
Dekui Xu1, 2, a, Fei Gao2, b
1 College of Petroleum Engineering, Northeast Petroleum University, Daqing, 163318, China
2 Production Engineering Research Institute, Daqing Oilfield Company Ltd, Daqing, 163453, China
axudekui@sohu.com, bgaofei@petrochina.com.cn
Keywords: Compact Gas Reservoirs, Machining, Layered Fracturing, Packer.
The key of this method is to build the pipelines for delivering the fracturing liquid to tow layers with different functions by using packers and matching tools in the wellbore.
Because of wellbore volume restriction, to improve erosion-resisting capacity of tools, the high-strength material should be not only used, but the rational design of strings and tools should be also done to decrease the erosion and to improve the safety and reliability of the strings.
The temperature has no influence on packer material.
Considering the factors that cause half-way setting, this paper selects more suitable structure and material, thereby improving the reliability of the packer and avoiding half-way setting.
The key of this method is to build the pipelines for delivering the fracturing liquid to tow layers with different functions by using packers and matching tools in the wellbore.
Because of wellbore volume restriction, to improve erosion-resisting capacity of tools, the high-strength material should be not only used, but the rational design of strings and tools should be also done to decrease the erosion and to improve the safety and reliability of the strings.
The temperature has no influence on packer material.
Considering the factors that cause half-way setting, this paper selects more suitable structure and material, thereby improving the reliability of the packer and avoiding half-way setting.
Online since: February 2013
Authors: Pavol Tanuska, Pavel Važan, Dominika Jurovatá, Michal Kebisek
Analysis of Production Process Parameters by Using Data Mining Methods
Pavel Vazan1, a, Pavol Tanuska1, b, Dominika Jurovata1, c, Michal Kebisek1, d
1 Slovak University of Technology in Bratislava,
Faculty of Materials Science and Technology in Trnava,
Hajdóczyho 1, Trnava 917 24, Slovak Republic
a pavol.vazan@stuba.sk, b pavol.tanuska@stuba.sk, c dominika.jurovata@stuba.sk,
d michal.kebisek@stuba.sk
Keywords: Data Mining, Knowledge Discovery in Databases, Simulation, Production System.
The process based on the standard methodology CRISP-DM consists of the following key steps: - Define the objectives of data mining, focusing on improving the manufacturing process, - Data preparation: extraction of data sets from the data warehouse with respect to defined objectives, grouping and cleaning of data with respect to the chosen method of data mining, - Data Mining: creating a model and application of data mining methods on the transformed data set, - Evaluation of the results: an analysis with respect to the objectives, - Definition of knowledge: the obtained results are formulated in the knowledge production process and its control and planning, - According to the knowledge, the initial control strategy can be modified.
Material flow of production process Gained Knowledge Based on the resulting reports from each data-mining methods and techniques, we proceeded to the evaluation.
International Journal of Engineering 2012/1 ISNN 1584-2665, (2012) [2] J.
Applications of neural network in regression analysis, Computers & Industrial Engineering, Volume 23, Issues 1–4, pages 93-95, ISSN 0360-8352, [online] Available on the Internet:http://www.sciencedirect.com/ science/article/pii/ 036083529290071Q, [cited: 2012-06-12; 15:00 CET] (1992).
The process based on the standard methodology CRISP-DM consists of the following key steps: - Define the objectives of data mining, focusing on improving the manufacturing process, - Data preparation: extraction of data sets from the data warehouse with respect to defined objectives, grouping and cleaning of data with respect to the chosen method of data mining, - Data Mining: creating a model and application of data mining methods on the transformed data set, - Evaluation of the results: an analysis with respect to the objectives, - Definition of knowledge: the obtained results are formulated in the knowledge production process and its control and planning, - According to the knowledge, the initial control strategy can be modified.
Material flow of production process Gained Knowledge Based on the resulting reports from each data-mining methods and techniques, we proceeded to the evaluation.
International Journal of Engineering 2012/1 ISNN 1584-2665, (2012) [2] J.
Applications of neural network in regression analysis, Computers & Industrial Engineering, Volume 23, Issues 1–4, pages 93-95, ISSN 0360-8352, [online] Available on the Internet:http://www.sciencedirect.com/ science/article/pii/ 036083529290071Q, [cited: 2012-06-12; 15:00 CET] (1992).
Online since: August 2013
Authors: Cheng Xiu Li, Ren Ju Cheng, Hui Hua Luo
Study on Collector for Reverse Flotation of Certain Phosphorite in Guizhou
Chengxiu Li 1,2,a, Cheng Renju2,b, Luo Huihua3,c
1Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China
2Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu, Sichuan, 610041, China
3School of Environmental and Civil Engineering, Wuhan Institute of Technology, Wuhan, 430074, China
aemail: lchx_gjkc@sina.com, bemail: chengrenju0325@126.com,c email: luohuihua1029@sina.com
Keywords: Cellophanite; Vegetable oil fatty acid; Flotation performance
Abstract.On the basis of the contrastive research into the flotation performance of several vegetable oil fatty acids, the rapeseed oil fatty acid with better performance was screened out from many fatty acids, and its linolenic acid C18:3content is15.81%, then through modifying and compounding, new magnesium removal collector EM-LS-01was obtained.
The compound collectors, which were prepared by using rapeseed oil, cotton oil and corn oil fatty acid as raw materials, have superior reverse flotation effect relatively, with which the grade of phosphate concentrate can be over 30%, among which the compound effect of rapeseed oil is the best, because under the same conditions, rapeseed oil fatty acid has the highest magnesium removal rate, the recovery rate of phosphate concentrate obtained by using it is 5% higher than that by using other three kinds of fatty acids, so it has the highest efficiency of concentrate.
But the content of harmful component, sesquioxide R2O3, in phosphate concentrate is significantly higher, even higher than that in the raw ore, the key reason is because the sesquioxide is hosted in silicate minerals, which is unable to be removed with single reverse flotation, therefore the sesquioxide enriched in phosphate concentrate.
Being as the material of reverse flotation collector of phosphate mineral, the higher content of linoleic acid and linolenic acid in fatty acid, the better performance the flotation has. 2.
The compound collectors, which were prepared by using rapeseed oil, cotton oil and corn oil fatty acid as raw materials, have superior reverse flotation effect relatively, with which the grade of phosphate concentrate can be over 30%, among which the compound effect of rapeseed oil is the best, because under the same conditions, rapeseed oil fatty acid has the highest magnesium removal rate, the recovery rate of phosphate concentrate obtained by using it is 5% higher than that by using other three kinds of fatty acids, so it has the highest efficiency of concentrate.
But the content of harmful component, sesquioxide R2O3, in phosphate concentrate is significantly higher, even higher than that in the raw ore, the key reason is because the sesquioxide is hosted in silicate minerals, which is unable to be removed with single reverse flotation, therefore the sesquioxide enriched in phosphate concentrate.
Being as the material of reverse flotation collector of phosphate mineral, the higher content of linoleic acid and linolenic acid in fatty acid, the better performance the flotation has. 2.
Online since: March 2014
Authors: Yang Lin, Ting Ya Zhou, Xin Wang, Xiao Yi Yang
Component Characteristics of Coal-based Jet Fuel and Petroleum-based Jet Fuel
Yang Lin1,, Tingya Zhou1 , Xin Wang1, Xiaoyi Yang1,a,*
1School of Energy and Power Engineering, Energy and Environment International Center, Beihang University, 37 Xueyuan Rd., Haidian District, Beijing, P.
Introduction Coal-based alternative jet fuels refer to the liquid fuels obtained from solid coal, using coal as raw material.
Using the coal as raw material, SASOL from South Africa obtained the semi-synthetic jet fuel (SSJF) and fully synthetic jet fuel (FSJF) via the F-T process.
Acknowledgements This project was supported by Key program of Beijing Municipal Science & Technology Commission (D131100003113003) and the Hi-Tech Research and Development Program (863) of China (2012AA052102).
Journal of Engineering for Gas Turbines and Power, Vol.131(2009), p.131 [6] C.L.
Introduction Coal-based alternative jet fuels refer to the liquid fuels obtained from solid coal, using coal as raw material.
Using the coal as raw material, SASOL from South Africa obtained the semi-synthetic jet fuel (SSJF) and fully synthetic jet fuel (FSJF) via the F-T process.
Acknowledgements This project was supported by Key program of Beijing Municipal Science & Technology Commission (D131100003113003) and the Hi-Tech Research and Development Program (863) of China (2012AA052102).
Journal of Engineering for Gas Turbines and Power, Vol.131(2009), p.131 [6] C.L.
Online since: April 2016
Authors: Jan L. Vítek, David Čítek, Pavel Jursík, Jiří Kolisko, Robert Coufal
Rohanské nábřeží 68, 180 00 Prague 8, Czech Republic
4Faculty of Civil Engineering, CTU in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic
avitek@metrostav.cz, bdavid.citek@cvut.cz, ckolisko@cvut.cz, drobert.coufal@tbg-beton.cz, epavel.jursik@gmail.com
Keywords: UHPC, shear connection, composite steel concrete beams, perforated steel sheet, bond.
The joints which might become weak points may be produced using an UHPC, so that the amount of the material is low, the costs are not influenced significantly, the hardening of UHPC is fast, the assembly may be fast and the stresses are transferred reliably since the quality of UHPC is high.
Experimental verification of bond of reinforcing steel and concrete UHPC is relatively new material a lot of experimental research and verification of material parameters need to be done [1].
Bond is one of the key parameters for design of concrete structures.
Fibre Concrete 2013 - Technology, Design, Application, Prague: Faculty of Civil Engineering, Czech Technical University in Prague, 2013, p. 407-414.
The joints which might become weak points may be produced using an UHPC, so that the amount of the material is low, the costs are not influenced significantly, the hardening of UHPC is fast, the assembly may be fast and the stresses are transferred reliably since the quality of UHPC is high.
Experimental verification of bond of reinforcing steel and concrete UHPC is relatively new material a lot of experimental research and verification of material parameters need to be done [1].
Bond is one of the key parameters for design of concrete structures.
Fibre Concrete 2013 - Technology, Design, Application, Prague: Faculty of Civil Engineering, Czech Technical University in Prague, 2013, p. 407-414.