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Online since: April 2014
Authors: Yang Lu Hou, Xin Jin, Xing Hua Fu, Wen Hong Tao
Structure and Dielectric Properties of Mg, Cr-doped LaSrFeO3 Films
Yanglu Hou1, a, Xinghua Fu1, a, Wenhong Tao1, a, Xin Jin1, a
1School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China
amse_fuxh@ujn.edu.cn
Keywords: La0.5Sr0.5FeO3. dielectric properties. doped. thin films.
Then influencing the electrical domain and changing the material performance.
Experimental Procedure The precursor solution of samples are prepared by the sol-gel method using strontium acetate, lanthanum acetate, iron nitrate, magnesium acetate, chromic nitrate as material, using anhydrous ethanol, H2O and acetic acid as solvent, using ethanolamine, acetylacetone as chelator, according to the replacement rate of Mg, Cr.
Conclusions The precursor solution of La0.5Sr0.5FeO3, La1-xMgxFeO3, La0.5Sr0.5Fe1-x(Mg, Cr)xO3 is prepared on substrate by sol-gel method using strontium acetate, lanthanum acetate, iron nitrate, magnesium acetate, chromic nitrate as main material according to the replacement rate of Mg, Cr.
The Mg influence on the properties of SrTiO3 thin films[J], Journal of the European Ceramic Society, 2005,3(25): 3079-3083
Then influencing the electrical domain and changing the material performance.
Experimental Procedure The precursor solution of samples are prepared by the sol-gel method using strontium acetate, lanthanum acetate, iron nitrate, magnesium acetate, chromic nitrate as material, using anhydrous ethanol, H2O and acetic acid as solvent, using ethanolamine, acetylacetone as chelator, according to the replacement rate of Mg, Cr.
Conclusions The precursor solution of La0.5Sr0.5FeO3, La1-xMgxFeO3, La0.5Sr0.5Fe1-x(Mg, Cr)xO3 is prepared on substrate by sol-gel method using strontium acetate, lanthanum acetate, iron nitrate, magnesium acetate, chromic nitrate as main material according to the replacement rate of Mg, Cr.
The Mg influence on the properties of SrTiO3 thin films[J], Journal of the European Ceramic Society, 2005,3(25): 3079-3083
Online since: August 2015
Authors: Nuriziani Hussin, Siti Mariam Yusof, Muzamir Isa
Oil-impregnated paper is a very reliable insulation material, because the cavities of the fibrous paper are entirely filled with oil, hence any air bubbles within the insulator are excluded [10].
Mohd Basri Wahid et al., in: Malaysian Standard: Palm Oil-Specification (Second Revision), (2007) [4] Suwarno Aditama, “Dielectric Properties of Palm Oils as Liquid Insulating Materials : Effect of Fat Content”, IEEE Proceedings of International Symposium on Electrical Insulating Materials, Kitakyushu, Japan, 5-9 June (2005) [5] Endah Yuliastuti, “Analysis of Dielectric Properties Comparison Between Mineral Oil and Synthetic Ester Oil”, Master of Science in Electrical Engineering Thesis, Delft University of Technology, (2006) [6] F.
Babadagli, “Fluid-fluid Interaction during Miscible and Immiscible Displacement under Ultrasonic Waves,” The European Physical Journal, B, 60, 447-462 (2007) [16] Hossein Hamidi, Erfan Mohammadian, Roozbeh Rafati, Amin Azdarpour, “A Role of Ultrasonic Waves on Oil Viscosity Changes in Porous Media,” IEEE Conference on Clean Energy and Technology (CEAT). (2013)
Mohd Basri Wahid et al., in: Malaysian Standard: Palm Oil-Specification (Second Revision), (2007) [4] Suwarno Aditama, “Dielectric Properties of Palm Oils as Liquid Insulating Materials : Effect of Fat Content”, IEEE Proceedings of International Symposium on Electrical Insulating Materials, Kitakyushu, Japan, 5-9 June (2005) [5] Endah Yuliastuti, “Analysis of Dielectric Properties Comparison Between Mineral Oil and Synthetic Ester Oil”, Master of Science in Electrical Engineering Thesis, Delft University of Technology, (2006) [6] F.
Babadagli, “Fluid-fluid Interaction during Miscible and Immiscible Displacement under Ultrasonic Waves,” The European Physical Journal, B, 60, 447-462 (2007) [16] Hossein Hamidi, Erfan Mohammadian, Roozbeh Rafati, Amin Azdarpour, “A Role of Ultrasonic Waves on Oil Viscosity Changes in Porous Media,” IEEE Conference on Clean Energy and Technology (CEAT). (2013)
Slag and Porosity Defective Region Identification in Welding Images Using Computer Vision Techniques
Online since: August 2023
Authors: Ratnavel Rajalakshmi, S. Sivasankaran, Abhinav Basil Shinow, Giridharan Abimannan, C. Boopathy
Slag and Porosity Defective Region Identification in Welding Images Using Computer Vision Techniques
Ratnavel Rajalakshmi1,a*, Sivasankaran S.2,b, Abhinav Basil Shinow1,c, Giridharan Abhimannan3,d , Boopathy C.4,e
1School of Computer Science & Engineering, Vellore Institute of Technology, Chennai, India
2HCL Technologies Ltd., Chennai, India
3School of Mechanical Engineering, Vellore Institute of Technology, Chennai, India
4ACB Technologies, Chennai, India
arajalakshmi.r@vit.ac.in, bsivasankaran12@gmail.com, cabhinavbasil.shinow2019@vitstudent.ac.in, dgiridharan.abimannan@vit.ac.in, eamsak2019@gmail.com
Keywords: Welding, Defect Identification, Image processing, Thresholding, Binary Blob
Abstract.
Materials and Methods The GDXray [1] dataset is a publicly available dataset that can be used for research and educational purposes.
The X-ray images were taken by BAM Federal Institute for Material Research and Testing, Berlin, Germany.
Journal of Nondestructive Evaluation 34.4 (2015): 1-12
Materials Evaluation 62.11 (2004): 1142-1147
Materials and Methods The GDXray [1] dataset is a publicly available dataset that can be used for research and educational purposes.
The X-ray images were taken by BAM Federal Institute for Material Research and Testing, Berlin, Germany.
Journal of Nondestructive Evaluation 34.4 (2015): 1-12
Materials Evaluation 62.11 (2004): 1142-1147
Online since: January 2009
Authors: Shou Yang Zhang, Guo Dong Sun, Wei Cao, Yan Qiong Jiao, He Jun Li, Qian-Gang Fu
Introduction
Carbon/carbon (C/C) composites are attractive materials for a wide range of applications due to their
excellent high temperature properties, such as low thermal expansion coefficient, high thermal
stability, and high retention of mechanical properties at high temperatures [1].
Model Development In this work, MTS as precursor material, hydrogen and argon as carrier gas and diluting gas are pumped into CVD reactor, and SiC was deposited on C/C composites.
Acknowledgement This work has been supported by the National Natural Science Foundation of China under Grant No. 90716024 and the "111" Project under Grant No.08040.
Buckley, in: Carbon-carbon materials and composites, edtied by J.
Song: Journal of Xi'an Jiaotong University Vol. 41 (2007), p. 1070 (in Chinese)
Model Development In this work, MTS as precursor material, hydrogen and argon as carrier gas and diluting gas are pumped into CVD reactor, and SiC was deposited on C/C composites.
Acknowledgement This work has been supported by the National Natural Science Foundation of China under Grant No. 90716024 and the "111" Project under Grant No.08040.
Buckley, in: Carbon-carbon materials and composites, edtied by J.
Song: Journal of Xi'an Jiaotong University Vol. 41 (2007), p. 1070 (in Chinese)
Online since: May 2007
Authors: Guang Lin Wang, Ze Sheng Lu, Hui Feng Wang
Introduction
As technology progresses,in the fields of aviation, spaceflight, military and civil purpose, aspherics
devices have played a very important part in the essential equipments ,such as the pick-up head
that equiped by the reconnaissance satellite , the telemicroscope that employed by celestial
observation, the optical reflector and the microscope that used by medical sciences, etc, they all
have the needs of using high-accuracy aspherics device [1].The adoption of aspherics device in
optical system have the advantage of improving picture element, simplifying the system, reducing
dimension and weight of system.Yet,the utilization of aspherics device is retarded for its much
more difficult manufacture than the sphere device's.
The resection rate of material means the resectable material in unit time, is represented by Zw (mm 3/s).
Zw and Zs are related with material itself, action velocity, the grinding force between the grinding wheel and the piece's contact area and temperature, etc. and change with the normal grinding force proportionally probably.
Dong: Journal of Materials Processing Technology, (2002), pp.91
The resection rate of material means the resectable material in unit time, is represented by Zw (mm 3/s).
Zw and Zs are related with material itself, action velocity, the grinding force between the grinding wheel and the piece's contact area and temperature, etc. and change with the normal grinding force proportionally probably.
Dong: Journal of Materials Processing Technology, (2002), pp.91
Online since: July 2011
Authors: Man Yuan, Yu Fu, Ling Ling Guo
Competition can systematically train students the designing, developing and adjusting & testing abilities, promote the subject selecting, problem analyzing, material collecting and arranging abilities.
Journal of Higher Education Management, 2009, 3(3), p. 90-92
Journal of Liaoning Teachers College(Natural Science Edition), 2007, 9(2), p. 50, 74
Journal of Higher Education Management, 2009, 3(3), p. 90-92
Journal of Liaoning Teachers College(Natural Science Edition), 2007, 9(2), p. 50, 74
Online since: October 2007
Authors: Witold Łojkowski, Tadeusz Chudoba, Mathieu Teyssier
Optimization of Conditions of Preparation of YAG Nanopowders for
Sintering of Translucent Ceramics
Tadeusz Chudoba a, Mathieu Teyssier
b and Witold Łojkowski c
Institute of High Pressure Physics (UNIPRESS) of the Polish Academy of Sciences,
Sokolowska 29/37, 01-142 Warsaw, Poland
e-mail: a chudoba@unipress.waw.pl, b
mteyssier@hotmail.fr , c wl@unipress.waw.pl
Keywords: YAG, ZETA potential, nanopowder, HPLS
Abstract.
The results of the grain size measurements of the powders obtained by grinding operations depend significantly on parameters such as the dispersant or gas atmosphere during milling, the grinding material media and the intensity of crushing [6], as these variables can have an influence on the particle surfaces.
Lei Wen, Xudong Sun, Zhimeng Xiu, Shaowei Chen, Chi-Tay Tsai, Synthesis of nanocrystalline yttria powder and fabrication of transparent YAG ceramics, Journal of the European Ceramic Society 24 (2004) 2681-2688 [4].
Masakuni Ozawa , Masatomo Hattori, Ultrasonic vibration potential and point of zero charge of some rare earth oxides in water, Journal of Alloys and Compounds 408-412 (2006) 560-562 [6].
The results of the grain size measurements of the powders obtained by grinding operations depend significantly on parameters such as the dispersant or gas atmosphere during milling, the grinding material media and the intensity of crushing [6], as these variables can have an influence on the particle surfaces.
Lei Wen, Xudong Sun, Zhimeng Xiu, Shaowei Chen, Chi-Tay Tsai, Synthesis of nanocrystalline yttria powder and fabrication of transparent YAG ceramics, Journal of the European Ceramic Society 24 (2004) 2681-2688 [4].
Masakuni Ozawa , Masatomo Hattori, Ultrasonic vibration potential and point of zero charge of some rare earth oxides in water, Journal of Alloys and Compounds 408-412 (2006) 560-562 [6].
Online since: May 2011
Authors: Yi Liu, Xiao Min Mao
Material and Method
Governing Equations.
Lockington: Tidal effects on sea-water intrusion in unconfined aquifers, Journal of Hydrology, vol.216, no.1-2, pp. 17–31(1999)
Li, Shushen Zhang: Development in Researches on Seawater Intrusion of Coastal Areas, Marine Science Bulletin, vol.23, no.2, pp. 82-87(2004).
Nakagawa: Laboratory-scale saltwater behavior due to subsurface cutoff wall, Journal of Hydrology, pp. 227–236(2009)
Lockington: Tidal effects on sea-water intrusion in unconfined aquifers, Journal of Hydrology, vol.216, no.1-2, pp. 17–31(1999)
Li, Shushen Zhang: Development in Researches on Seawater Intrusion of Coastal Areas, Marine Science Bulletin, vol.23, no.2, pp. 82-87(2004).
Nakagawa: Laboratory-scale saltwater behavior due to subsurface cutoff wall, Journal of Hydrology, pp. 227–236(2009)
Online since: May 2011
Authors: Zheng Ming Tong, Kai Zhu, Jia Lei Lu, Yong Hai Hu, Li Ye, Chao Li
Convective Heat Transfer Characteristics of Laminar Flow
in Sinusoidal Corrugated Tube
Zhengming Tong1, Kai Zhua, Yonghai Hu, Li Ye, Jialei Lu and Chao Li
1Institute of Process Equipment and Control, University of Shanghai for Science and Technology, Shanghai, 200090, China
asduo-zk@163.com
Keywords: Sine camber; In tube; Laminar; Heat transfer; Field synergy
Abstract.
Heat transfer increment is generally crucial for some reasons, such as saving energy and material resources.
Sparrow: Journal of Heat Transfer, Vol.106(1984), p.55-63 [6] R.S.
Amano: Transactions of the ASME Journal of Heat Transfer, Vol.107(1985), p.564-569 [7] Giampietro Fabbri: Int.J. of Heat Transfer, Vol.43(2000), p.4299-4310 [8] Patankar S V: Numerical heat transfer and fluid flow (McGraw-Hill, New York 1980)
Heat transfer increment is generally crucial for some reasons, such as saving energy and material resources.
Sparrow: Journal of Heat Transfer, Vol.106(1984), p.55-63 [6] R.S.
Amano: Transactions of the ASME Journal of Heat Transfer, Vol.107(1985), p.564-569 [7] Giampietro Fabbri: Int.J. of Heat Transfer, Vol.43(2000), p.4299-4310 [8] Patankar S V: Numerical heat transfer and fluid flow (McGraw-Hill, New York 1980)
Online since: November 2012
Authors: Hong Hua, Xiao Bing Liu, Xiao Lin Wang, Hui Yan Wang
The motion equations of solid-liquid two-phase flow in the Eulerian coordinate system are as follows[10]:
Liquid phase continuity equation:
(1.1)
Solid phase continuity equation:
(1.2)
Liquid phase momentum equation:
(1.3)
Solid phase momentum equation:
(1.4)
In the above-listed equations, Ui and Vi are respectively the velocity components of the liquid and solid phase, ρ the material density of phases, ν the kinematic viscosity coefficient, P the gravity acceleration component, g the component of gravity acceleration, and xi the coordinate component.
Journal of Tsinghua University (Science and Technology), China, 2001, p 93-96
Chinese Journal of Mechanical Engineering (English Edition), v 17, n 4, p 623-627, December 2004
Journal of Tsinghua University (Science and Technology), China, 2001, p 93-96
Chinese Journal of Mechanical Engineering (English Edition), v 17, n 4, p 623-627, December 2004