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Online since: February 2015
Authors: Ping Li, Shan Huang, Hong Cheng Pan
China
Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
Guilin 541004, P.
Experimental Section Materials.
Acknowledgements This work is supported by Guangxi Natural Science Foundation (2013GXNSFBB053009).
Wang, Optical nonlinear absorption and refraction of CdS and CdS-Ag core-shell quantum dots, The Journal of chemical physics, 125 (2006) 024707
Experimental Section Materials.
Acknowledgements This work is supported by Guangxi Natural Science Foundation (2013GXNSFBB053009).
Wang, Optical nonlinear absorption and refraction of CdS and CdS-Ag core-shell quantum dots, The Journal of chemical physics, 125 (2006) 024707
Online since: September 2014
Authors: A. Erman Tekkaya, Matthias Hermes, Chrstioph Becker, Goran Grzancic
Tekkaya1,d
1Institute of Forming Technology and Lightweight Construction, TU Dortmund University, 44227 Dortmund, Baroper Straße 303, Germany
**Since September 2013: University of Applied Sciences Südwestfalen,
59872 Meschede, Jahnstraße 23, Germany
agoran.grzancic@iul.tu-dortmund.de, bchristoph.becker@iul.tu-dortmund.de, chermes.matthias@fh-swf.de, derman.tekkaya@iul.tu-dortmund.de
Keywords: Incremental, profile, tube, flexible
Abstract.
In the calculations the tube material was modeled as high-strength steel.
The tube material was S235JR.
Zhang, Developments in hydroforming, Journal of Materials Processing Technology 91 (1999) 236–244
In the calculations the tube material was modeled as high-strength steel.
The tube material was S235JR.
Zhang, Developments in hydroforming, Journal of Materials Processing Technology 91 (1999) 236–244
Online since: January 2017
Authors: Ren Li Fu, Xi Guang Gu, Fang Yang
Photoluminescence Properties of SrSi2O2N2 Doped with Divalent Ytterbium Phosphor in Nitrogen-Rich Coordination
Xiguang Gu1,a, Renli Fu1,b, Fang Yang1,c
1College of Material Science and Technology,Nanjing University of Aeronautics and Astronautics, Yudao Street No. 29, Nanjing 210016, PR China
aguxiguang@nuaa.edu.cn, brenlifu@nuaa.edu.cn, cyfangnuaa518@163.com
Keywords: SrSi2O2N2, luminescence properties, nitrogen-rich coordination
Abstract.
As the rare earth doped host materials, the (oxy)nitrides, such as (Ca,Sr,Ba)2Si5N8 [7], (Ca,Sr,Ba)Si2O2N2 [8], SiAlON [9] have attracted more interests due to their excellent thermal and chemical stability.
Among them, SrSi2O2N2 is a potential host material in these (oxy)nitride based phosphors due to its lower synthetic temperature.
Journal of Luminescence. 121 (2006) 441–449 [18] L.
As the rare earth doped host materials, the (oxy)nitrides, such as (Ca,Sr,Ba)2Si5N8 [7], (Ca,Sr,Ba)Si2O2N2 [8], SiAlON [9] have attracted more interests due to their excellent thermal and chemical stability.
Among them, SrSi2O2N2 is a potential host material in these (oxy)nitride based phosphors due to its lower synthetic temperature.
Journal of Luminescence. 121 (2006) 441–449 [18] L.
Online since: March 2013
Authors: Shi Ming Ji, Hao Dong Zhou, Hui Qiang Wang, Dong Hui Wen, Yang Yu Wang
Fig. 2 shows the test system schematic diagram of HSM vibration testing equipment of materials assembled with different hardness steels.
When milling from the non-transition zone to the transition zone, the acceleration increased from 0.246 g to 0.464g.This may be due to the increasing zone of the cutting material of high hardness material of the work-piece, the peak of milling force will increase gradually, causing strong vibrations which affect the surface quality of the work-piece.
Liu, The work-piece vibration test and analysis of the CNC milling process, Journal of Xuzhou Normal University (Natural Science Edition), 2011, 29(4):67-70
When milling from the non-transition zone to the transition zone, the acceleration increased from 0.246 g to 0.464g.This may be due to the increasing zone of the cutting material of high hardness material of the work-piece, the peak of milling force will increase gradually, causing strong vibrations which affect the surface quality of the work-piece.
Liu, The work-piece vibration test and analysis of the CNC milling process, Journal of Xuzhou Normal University (Natural Science Edition), 2011, 29(4):67-70
Online since: August 2011
Authors: Yuan Hao, Ying Ma, Ti Jun Chen, Yuan Dong Li, Hai Jun Huang
Effect of Heat Treatment on Thixoformed AM60B Alloy
Haijun Huanga, Tijun Chenb,*, Ying Ma, Yuandong Li, and Yuan Hao
Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
acornus@163.com, bchentj1971@126.com
* Corresponding author: CHEN Ti-jun; Tel: +86-931-2976573; E-mail: chentj@lut.cn chentj1971@126.com
Keywords: AM60B; Thixoforming; Heat treatment; Microstructure; Kinetics
Abstract.
Stumpf: Open Materials Science Journal.
Stumpf: Open Materials Science Journal.
Online since: May 2011
Authors: Hai Feng Li, Hong Tao Yang, Ping Cong, Qing Fu Li
Table.1 The Weights of Risk Factors from Six Experts
Sequence number
Risk factor
S1
S2
S3
S4
S5
S6
1
Poor construction environment
0.06631
0.08971
0.08148
0.07793
0.07309
0.07236
2
Complex structure and technology
0.04832
0.06696
0.05938
0.0568
0.05327
0.05274
3
Applying new technologies
0.04383
0.04833
0.05386
0.05151
0.04831
0.04783
4
Short construction period
0.05732
0.06325
0.07043
0.06736
0.06318
0.06255
5
Shortage of funds
0.04832
0.04467
0.05938
0.0568
0.05327
0.05274
6
High demand on quality
0.05282
0.05183
0.0649
0.06208
0.05822
0.05765
7
Frequent changes on design
0.09476
0.04783
0.06267
0.06541
0.06526
0.06431
8
Deficiencies in construction organization
0.05486
0.03797
0.03628
0.03787
0.03778
0.03723
9
Weakness in construction technology
0.06925
0.06924
0.07855
0.09137
0.0831
0.08851
10
Delay supply of labours and materials
0.05276
0.04989
0.05985
0.06962
0.06331
0.06744
11
Less input and shortage of safety consciousness
0.04727
0.04965
0.05362
0.06237
0.05672
0.06042
12
Disqualification
Table.3 Combined Weights of Risk Factors Based on the Entropy and Sort of Risk Factors Risk factors Combined weights Eventual sort S1 S 2 S3 S4 S5 S6 Poor construction environment 0.0757 4 6 3 2 3 4 4 Complex structure and technology 0.0553 12 12 5 9 11 12 12 Applying new technologies 0.04919 14 16 12 12 13 14 14 Short construction period 0.06433 6 7 6 5 6 7 7 Shortage of funds 0.05357 13 11 14 10 12 13 13 High demand on quality 0.05878 9 9 7 6 10 9 11 Frequent changes on design 0.06589 5 2 13 7 7 5 6 Deficiencies in construction organization 0.03894 16 8 16 16 16 16 16 Weakness in construction technology 0.08218 2 4 4 3 1 2 2 Delay supply of labours and materials 0.0624 8 10 10 7 4 6 5 Less input and shortage of safety consciousness 0.05628 11 14 11 13 8 10 8 Disqualification of construction equipment 0.05636 10 13 9 14 9 11 9 Omissions of planning and design 0.09966 1 1 1 1 2 1 1 Too many improper administrative interventions 0.07572 3 3 15 4 5 3 3 Poor coordination of design, construction
Acknowledgements This work has been supported by the Program of National Natural Science Foundation of China (50978234).
Yang: submitted to Journal of North China Institute of Water Conservancy and Hydroelectric Power Vol.27 (2006).p.100
Table.3 Combined Weights of Risk Factors Based on the Entropy and Sort of Risk Factors Risk factors Combined weights Eventual sort S1 S 2 S3 S4 S5 S6 Poor construction environment 0.0757 4 6 3 2 3 4 4 Complex structure and technology 0.0553 12 12 5 9 11 12 12 Applying new technologies 0.04919 14 16 12 12 13 14 14 Short construction period 0.06433 6 7 6 5 6 7 7 Shortage of funds 0.05357 13 11 14 10 12 13 13 High demand on quality 0.05878 9 9 7 6 10 9 11 Frequent changes on design 0.06589 5 2 13 7 7 5 6 Deficiencies in construction organization 0.03894 16 8 16 16 16 16 16 Weakness in construction technology 0.08218 2 4 4 3 1 2 2 Delay supply of labours and materials 0.0624 8 10 10 7 4 6 5 Less input and shortage of safety consciousness 0.05628 11 14 11 13 8 10 8 Disqualification of construction equipment 0.05636 10 13 9 14 9 11 9 Omissions of planning and design 0.09966 1 1 1 1 2 1 1 Too many improper administrative interventions 0.07572 3 3 15 4 5 3 3 Poor coordination of design, construction
Acknowledgements This work has been supported by the Program of National Natural Science Foundation of China (50978234).
Yang: submitted to Journal of North China Institute of Water Conservancy and Hydroelectric Power Vol.27 (2006).p.100
Online since: September 2014
Authors: Wei Li, Xiao Hu Jia
A Mukeden requires high quality logs, which are increasingly unavailable for people of our time living far from forests, and though logs and moss are great natural insulators, synthetic materials simply performs better, and even those who still build Mukedens will not likely put tradition above function.
Though it is not possible to revert back to days of moss, manure, and sawdust, it would not be a waste of time and effort to build modern Mukedens with appropriate synthetic materials or wood processed by newer methods, to preserve the building techniques and creativity in this seemingly crude from of architecture.
Journal of Hubei Institute for Nationalities (Philosophy and Social Sciences). 2007. 2. 50-52, 69.
Though it is not possible to revert back to days of moss, manure, and sawdust, it would not be a waste of time and effort to build modern Mukedens with appropriate synthetic materials or wood processed by newer methods, to preserve the building techniques and creativity in this seemingly crude from of architecture.
Journal of Hubei Institute for Nationalities (Philosophy and Social Sciences). 2007. 2. 50-52, 69.
Online since: June 2015
Authors: Jaromir Petrzala, Martin Krizma, Marián Kišac
Fig. 1 Geometrical and reinforcing characteristics of the non-strengthened and the strengthened beam (with coupling reinforcement)
Some material characteristics of concrete of the tested specimens are presented in Table 1.
For a non-linear analysis, the material “3D Nonlinear Cementitous” was chosen as the model of concrete.
Necessary material characteristics were obtained by laboratory measurements.
The contact can be in the ATENA 3D modelled as a perfect joint without a mutual slip or as the material element called “GAP”, which simulates a real bond between the surfaces.
Kovacovic, Resistance between concrete surfaces of composite members, Building Research Journal 60 (2013) 211-222
For a non-linear analysis, the material “3D Nonlinear Cementitous” was chosen as the model of concrete.
Necessary material characteristics were obtained by laboratory measurements.
The contact can be in the ATENA 3D modelled as a perfect joint without a mutual slip or as the material element called “GAP”, which simulates a real bond between the surfaces.
Kovacovic, Resistance between concrete surfaces of composite members, Building Research Journal 60 (2013) 211-222
Online since: March 2006
Authors: Moh. Syaifuddin, Kwang Joon Yoon, Hoon Cheol Park, Nam Seo Goo
., "Trends in Biorobotic Autonomous Undersea Vehicles," IEEE Journal
of Oceanic Engineering, Vol. 29, 2004 (in press)
[3] Dickinson, M.H., Lehmann, F.O., and Sane, S.P., "Wing rotation and the aerodynamics basis of insect flight," Science, Vol. 284, pp.1954-1960, 1999
[5] Park, H.C., Lee, S.Y., Lee, S.K., Yoon, K.J., and Goo, N.S., "Design and demonstration of flapping wing device powered by LIPCA," SPIE's 11th Annual International Symposium on Smart Structures and Material, 14-18 March 2004, San Diego, USA
[6] Park, H.C., Kim, K.J., Lee, S.K., and Chah, Y.J., "Electromechanical flapping produced by ionic polymer-metal composites," SPIE's 11th Annual International Symposium on Smart Structures and Material, 14-18 March 2004, San Diego, USA
[7] Yoon, K.J., Shin, S., Park, H.C., and Goo, N.S., "Design and manufacture of a lightweight piezo-composite curved actuator," Smart Materials and Structures, 10. pp.1-6, 2002
[3] Dickinson, M.H., Lehmann, F.O., and Sane, S.P., "Wing rotation and the aerodynamics basis of insect flight," Science, Vol. 284, pp.1954-1960, 1999
[5] Park, H.C., Lee, S.Y., Lee, S.K., Yoon, K.J., and Goo, N.S., "Design and demonstration of flapping wing device powered by LIPCA," SPIE's 11th Annual International Symposium on Smart Structures and Material, 14-18 March 2004, San Diego, USA
[6] Park, H.C., Kim, K.J., Lee, S.K., and Chah, Y.J., "Electromechanical flapping produced by ionic polymer-metal composites," SPIE's 11th Annual International Symposium on Smart Structures and Material, 14-18 March 2004, San Diego, USA
[7] Yoon, K.J., Shin, S., Park, H.C., and Goo, N.S., "Design and manufacture of a lightweight piezo-composite curved actuator," Smart Materials and Structures, 10. pp.1-6, 2002
Online since: February 2012
Authors: De Sheng Chen, Xue Wen Du
Acknowledgment
This research was supported by Zhejiang Provincial Natural Science Foundation of China (ZJNSF No.
Zheng: Journal of Machine Design.
Su: Mechanics of Materials (People’s Education Press, China 1980), p. 109−110 (In Chinese) [8] J.
Barber: Intermediate Mechanics of Materials (McGraw-Hill Companies, Inc U.K. 2001), p. 440−443 [9] J.
Zheng: Journal of Machine Design.
Su: Mechanics of Materials (People’s Education Press, China 1980), p. 109−110 (In Chinese) [8] J.
Barber: Intermediate Mechanics of Materials (McGraw-Hill Companies, Inc U.K. 2001), p. 440−443 [9] J.