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Online since: March 2015
Authors: Jie Gao, Jian Yi Lu, Cheng Long Meng
Simulation Studies on Transformation of Mercury during Combustion process
Jianyi Lu 1, a, Jie Gao 1,b and Chenglong Meng 1,c
1 School of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, Hebei, P.R.China
alujianyi@tsinghua.org.cn, b348206427@qq.com, c294672706@qq.com
Keywords: Simulation;mercury ;transformation;combustion
Abstract: Mercury is one of important trace heavy metal elements and about 1/3 of mercury in the air comes from emissions of coal-fired flue gas.
Studying Methods Chemkin Simulation In this experiment the volume of material composition and the inlet gas flow in the process of mercury combustion are known and the PSR model which is widely used in the simulation of chemical burnings is adopted to calculate.
In the reacting process , the Hg-Cl keys distance gradually reduced, Cl-Cl bond breaks then Hg-Cl bond forms.The reacting process is shown as figure 2.
Studying Methods Chemkin Simulation In this experiment the volume of material composition and the inlet gas flow in the process of mercury combustion are known and the PSR model which is widely used in the simulation of chemical burnings is adopted to calculate.
In the reacting process , the Hg-Cl keys distance gradually reduced, Cl-Cl bond breaks then Hg-Cl bond forms.The reacting process is shown as figure 2.
Online since: February 2014
Authors: Hiroyuki Yaguchi, Yasuto Hijikata, Shuhei Yagi, Yurie Akasaka
Si emission into the oxide layer during oxidation of silicon carbide
Yasuto Hijikataa *, Yurie Akasaka, Shuhei Yagib, and Hiroyuki Yaguchic
Graduate School of Science and Engineering, Saitama University
255 Shimo-Okubo, Sakura-ku, Saitama 338-8570, Japan
a yasuto@opt.ees.saitama-u.ac.jp, byagi@, cyaguchi@
Keywords: oxidation mechanism, Si and C emission, SiC-oxide interface
Abstract.
Introduction It is still a severe issue that the prospective low on-resistances from the material properties of SiC have not been provided from actually fabricated SiC-MOSFETs, especially for 4H-SiC.
Anyway, it must be said that Si and/or C emission during oxidation is the key to elucidate the origin of interface trap of the SiO2/SiC interface.
Introduction It is still a severe issue that the prospective low on-resistances from the material properties of SiC have not been provided from actually fabricated SiC-MOSFETs, especially for 4H-SiC.
Anyway, it must be said that Si and/or C emission during oxidation is the key to elucidate the origin of interface trap of the SiO2/SiC interface.
Online since: September 2015
Authors: Andrey Berezin, Natalia Gorodnova, Elena Shablova
., Ekaterinburg, 620014 Russia
ae.shablova@rambler.ru, bqorodnova243@mail.ru, caberezin01@g.harvard.edu
Key words: Energy conservation, Energy efficiency, Energy conservation legislation, Energy service contract, Subject of energy service contract
Abstract.
Based on the priority areas of science, technology, and engineering in the Russian civil nature (approved by Presidential Decree, July 7th, 2011. № 899), we can state that the Russia’s energy services will receive intensive and priority development in the medium term.
Prospects of development of energy service legislation in Russia Russian business practices of contractual regulation of relations within energy service activity has not yet accumulated a wealth of experience in forming the content of contracts, so there is no material for generalization and litigation related to the execution of contractual obligations.
Based on the priority areas of science, technology, and engineering in the Russian civil nature (approved by Presidential Decree, July 7th, 2011. № 899), we can state that the Russia’s energy services will receive intensive and priority development in the medium term.
Prospects of development of energy service legislation in Russia Russian business practices of contractual regulation of relations within energy service activity has not yet accumulated a wealth of experience in forming the content of contracts, so there is no material for generalization and litigation related to the execution of contractual obligations.
Online since: January 2012
Authors: Rong Rong Han, Hui Sun
Calculation of Array Gain in the Reverberation Field
Han Rongrong1, a, Sun Hui2,b
1.2National Laboratory of Underwater Acoustic Technology,
Harbin Engineering University, Harbin, Heilongjiang Province, China
ahanrongrong@hrbeu.edu.cn, bheusunhui@126.com
Keywords: Reverberation; Array gain; Correlation coefficient
Abstract.
Bottom Reverberation Signal Model Effect is more complex because of different components of the ocean bottom (the structure, density, porosity, viscosity, roughness, etc. of the bottom material from hard rock to ooze mud) and multi-layered structure (velocity layer).
Array Gain Calculation Array gain is calculated as (8) The key to calculate the correlation coefficient is and .
Bottom Reverberation Signal Model Effect is more complex because of different components of the ocean bottom (the structure, density, porosity, viscosity, roughness, etc. of the bottom material from hard rock to ooze mud) and multi-layered structure (velocity layer).
Array Gain Calculation Array gain is calculated as (8) The key to calculate the correlation coefficient is and .
Online since: July 2014
Authors: Jin Li Sun, Xiao Li Li
Application of Wavelet Analysis to Eddy Current Testing for the Surface Fatigue Crack of Bolt Holes
Xiao-Li LI 1,a , Jin-Li SUN 1,b
1 Naval Aeronautical Engineering Institute Qingdao branch campus, Qingdao 266041, P.R. of China
aqdlixl@163.com, b hjsjL@163.com
Keywords: nondestructive testing, eddy testing, wavelet analysis, denoise
Abstract.
Introduction Eddy current testing (ET) is an effective method for detecting conductive material surface and near surface defect.
At present, the eddy current detection in pressure vessel of nuclear power station, heat exchange tube, aircraft structure and other key equipment defect detection has been widely used[1].
Introduction Eddy current testing (ET) is an effective method for detecting conductive material surface and near surface defect.
At present, the eddy current detection in pressure vessel of nuclear power station, heat exchange tube, aircraft structure and other key equipment defect detection has been widely used[1].
Online since: October 2014
Authors: Zi Qiang Wang, Zhe Yan Yu
Analysis and Simulation of a Limited-Angle Torque Motor
Yu Zheyan1,a, Wang Ziqiang1,b
1 School of Automation Science and Electrical Engineering, Beihang University, Beijing,100191, China
awonderfullife29@126.com, bbhwzq7465@sina.com
Keywords: limited angle, torque motor, performance characteristic, finite element analysis
Abstract.
According to the magnetization curve for the core material, the core becomes saturated as the flux density is up to 1.8T.
Eq. 8 shows that the stiffness is the key factor affecting the magnitude of the magnetic restoring torque.
According to the magnetization curve for the core material, the core becomes saturated as the flux density is up to 1.8T.
Eq. 8 shows that the stiffness is the key factor affecting the magnitude of the magnetic restoring torque.
Online since: January 2013
Authors: Ya Qing Feng, Bao Zhang, Xiao Peng, Fang Qun Zhou
Synthesis and Application of Novel β D-π-A Porphyrin Dyes in Dye-sensitized Solar Cells
Fangqun Zhou1a, Yaqing Feng1b, Xiao Peng1c, Bao Zhang1d
1School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
azfq@tju.edu.cn, byqfeng@tju.edu.cn, cpaladin_X@yahoo.cn, dbaozhang@tju.edu.cn
Key words: porphyrin dyes; D-π-A structure; DSSC
Abstract: Two β D-π-A porphyrin dyes have been synthesized and applied as photosensitizers for dye-sensitized solar cells (DSSCs).
The reaction mixture was separated by column chromatography on silica gel with the elution order: raw material (56%), mono-coupling product (34%), bis-coupling product (10%).
The reaction mixture was separated by column chromatography on silica gel with the elution order: raw material (56%), mono-coupling product (34%), bis-coupling product (10%).
Online since: October 2014
Authors: Rong Hou, yan gao, Guang Feng Liu, Shu Sheng Li, Jun Tao Wang, Xue Jiao Li
Production Characteristics Study of Tight Gas Reservoir with Network Fracturing Using Numerical Simulation
Guangfeng Liu1, a, Rong Hou1, b, Shusheng Li2, c, Yan Gao1, d, Juntao Wang2, e and Xuejiao Li3, f
1 CMOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing, China
2 Petrochina Changqing Oilfield, Xi’an, China
3 Beijing Polydoctor Petroleum Technology Co., LTD, Beijing, China
algf@cup.edu.cn, bhourongrr@163.com, clss_cq@petrochina.com.cn, dgykind@163.com, ewangjuntao_cq@petrochina.com.cn, flijunjiao-11@163.com
Keywords: Production characteristics, Network fracturing, Tight gas reservoir, Numerical simulation.
Introduction Network fracturing is the technology which crushes rocks in order to form complex fracture networks using low viscosity fluid with high pump rate, large fluid volume and diverting technology or material [1,2].
Introduction Network fracturing is the technology which crushes rocks in order to form complex fracture networks using low viscosity fluid with high pump rate, large fluid volume and diverting technology or material [1,2].
Online since: March 2010
Authors: Juan Du, Xian Guo Yan, Zhi Chen
A Multi-agent based tool path planning method for STEP-NC compliant
milling
Juan Du1, a, Xianguo Yan1,b and Zhi Chen1,c
1
Sch.of Mechanical and Electronic Engineering, Taiyuan University of Science and Technology,
Taiyuan, 030024, China
a
lgzdj1999@163.com, bchina_azalea@163.com, czichenzhi2005@sina.com
Keywords: multi-agent, STEP-NC, manufacturing feature, tool path planning
Abstract.
When the system begins to plan tool path, the STEP-NC program of machined part is firstly imported into the system, and then the information extract agent recognizes and extracts the useful information from the program according to given key words, and inputs the information into the database.
In this figure, pink lines denote the rapid movement track of cutter approaching to or retracting from the part, and green lines show the movement path of cutter when it removes redundant material from the part.
When the system begins to plan tool path, the STEP-NC program of machined part is firstly imported into the system, and then the information extract agent recognizes and extracts the useful information from the program according to given key words, and inputs the information into the database.
In this figure, pink lines denote the rapid movement track of cutter approaching to or retracting from the part, and green lines show the movement path of cutter when it removes redundant material from the part.
Online since: September 2013
Authors: Xing Meng, Meng Ling Li
Simith, this book defined the concept of livability mainly from material and environment.
So, in a period of time, evaluation index is stable relatively, at the same time, we should consider the dynamic development of a city, adding some new factors to index system, ensuring it’s scientific and accurate. 2.2 Establishing the livable index system of old community renovation Because the paper mainly studies the livable evaluation index system of old community renovation, the key lies in "renovation".
It is often referred to as neural network in engineering and academia.
So, in a period of time, evaluation index is stable relatively, at the same time, we should consider the dynamic development of a city, adding some new factors to index system, ensuring it’s scientific and accurate. 2.2 Establishing the livable index system of old community renovation Because the paper mainly studies the livable evaluation index system of old community renovation, the key lies in "renovation".
It is often referred to as neural network in engineering and academia.