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Online since: November 2016
Authors: Luciana Viana Amorim, Karine Castro Nóbrega
Materials and Methods
Materials
To prepare the clay dispersions, it was used a sample of bentonite clay naturally sodic from United States, commercially known by Volclay, provided by the Company Bentonit União Nordeste Ltda – BUN, located in Campina Grande/PB; one sample of carboxymethylcellulose with low viscosity (CMC BV) with molar mass 9,0 x 104g/mole and substitution degree of 0,7 acquired in the Company Sigma Aldrich Brasil Ltda/SP; and two samples of calcite (calcite 1 and calcite 2, respectively) with different particles’ average diameter and size distribution’s curves, provided by PETROBRAS and the Company System Mud an Imdex Limited Company, Itajaí/SC.
Souza Santos: Clay Science and Tecnology.
Çelik: International Journal of Mineral Processing Vol. 94 (2010), p. 196
Righ: Applied Clay Science Vol. 23 (2003), p. 275
Anaissi: Orbital: The Electronic Journal of Chemistry Vol. 5 (4) (2013), p. 1.
Souza Santos: Clay Science and Tecnology.
Çelik: International Journal of Mineral Processing Vol. 94 (2010), p. 196
Righ: Applied Clay Science Vol. 23 (2003), p. 275
Anaissi: Orbital: The Electronic Journal of Chemistry Vol. 5 (4) (2013), p. 1.
Online since: August 2020
Authors: Andrii Kovalov, Vitalii Slovinskyi, Mykola Udianskyi, Ivan Ponomarenko, Marcin Anszczak
Czujko, Assessment of hydrocarbon explosion and fire risks in offshore installations: Recent advances and future trends, IES Journal Part A: Civil and Structural Engineering. 4 (2016) 167–179
Konoval, Effect of Residual Deformation of a Steel Column on its Fire Resistance under Combined Exposure “Explosion-Fire”, In Materials Science Forum. 968 (2019) 288-293
Series: Materials Science and Engineering. 708 (2019) 012058
Borges, Experimental behaviour of a steel structure under natural fire, Fire Safety Journal. 7 (2006) 509–522
Konoval, Effect of Residual Deformation of a Steel Column on its Fire Resistance under Combined Exposure “Explosion-Fire”, In Materials Science Forum. 968 (2019) 288-293
Series: Materials Science and Engineering. 708 (2019) 012058
Borges, Experimental behaviour of a steel structure under natural fire, Fire Safety Journal. 7 (2006) 509–522
Online since: May 2011
Authors: Hong Wei Lu, Yu Zhu Zhang, Jun Guo Li
On the other hand, the Portland steel slag cement has some disadvantages because of lower content of the potential hydrating materials and higher content of f-CaO, such as lower early strength, lower stability, etc.
Chen: The Chinese Journal of Nonferrous Metals Vol. 15(2005), P. 584 [6] D.J.
Tsakiropoulos: The Chinese Journal of Nonferrous Metals Vol. 16(2006), P. 793 [11] Y.L.
Xu: Science in China Ser.
E Technological Sciences Vol. 36(2006), P. 24 [12] X.W.
Chen: The Chinese Journal of Nonferrous Metals Vol. 15(2005), P. 584 [6] D.J.
Tsakiropoulos: The Chinese Journal of Nonferrous Metals Vol. 16(2006), P. 793 [11] Y.L.
Xu: Science in China Ser.
E Technological Sciences Vol. 36(2006), P. 24 [12] X.W.
Online since: March 2010
Authors: Li Juan Jin, Zheng Wei Kong, Xiu Lin Sui, Jia Tai Zhang, Jiang Hua Ge
Experimental conditions are as follows: High-speed steel ball-end milling with two edges, diameter
φ=10mm, the hanging length of tool body l=40mm, adopting dry milling; cutting parameter
S=1500r/min, ae=1mm, fz=0.1mm/z,ap=0.7mm; the work piece material is 45 steel.
Journal of Computer Aided Design & Computer Graphics, Vol.16, No. 5(2004):p. 642-647 [2] Kishawy.H.A.
Machining Science and Technology, 2002, Vol.6, No. l(2002) : p.67-79 [3] Hosokawa.
Key Engineering Materials, Vol.259-260(2004):p. 804-808 [5] Yu.B.
Journal of System Simulation, 2008, Vol.29, No. 10(2008): p.2646-2653
Journal of Computer Aided Design & Computer Graphics, Vol.16, No. 5(2004):p. 642-647 [2] Kishawy.H.A.
Machining Science and Technology, 2002, Vol.6, No. l(2002) : p.67-79 [3] Hosokawa.
Key Engineering Materials, Vol.259-260(2004):p. 804-808 [5] Yu.B.
Journal of System Simulation, 2008, Vol.29, No. 10(2008): p.2646-2653
Online since: September 2014
Authors: Pervaiz Habibullah
Mostly stainless steel is recycled and average stainless steel objects manufactured and marketed are composed of above 60% recycled material.
Bibliography [1] http://www.gowelding.com/met/austenitic.html p.1 [2] ibid p.2 [3] Kocijan A, Donik C, Jenko M., The corrosion behaviour of duplex stainless steel in chloride solutions studied by XPS, Materiali in tehologije/materials and technology 43 (2009) 4, 195-199
[8] Yoshimura, Toshihiko; Ishikawa, Yuichi, Ohkido, Shinobu, Analysis of oxide film on stainless steel via position-sensitive atom, Journal of Vacuum Sci. & Tech.
A: Vacuum, Surfaces and films, Vol. 1 Issue 4 Jul. 1994, pages 2544-2548 [9] http:www.springerlink.com/content/j7572477kh0n1504/, Journal of analytical chemistry, vol. 341, numbers 5-6-springerlink [10] E.Kikuti, N.Bocchi, J.J.
Monterr, Simoes, Composition and structure of coloured oxide film formed by triangular current scan and cathodic, Corrosion Science, Vol. 49, Issue 5, May 2007, pages 23 [11] Tadayuki N.
Bibliography [1] http://www.gowelding.com/met/austenitic.html p.1 [2] ibid p.2 [3] Kocijan A, Donik C, Jenko M., The corrosion behaviour of duplex stainless steel in chloride solutions studied by XPS, Materiali in tehologije/materials and technology 43 (2009) 4, 195-199
[8] Yoshimura, Toshihiko; Ishikawa, Yuichi, Ohkido, Shinobu, Analysis of oxide film on stainless steel via position-sensitive atom, Journal of Vacuum Sci. & Tech.
A: Vacuum, Surfaces and films, Vol. 1 Issue 4 Jul. 1994, pages 2544-2548 [9] http:www.springerlink.com/content/j7572477kh0n1504/, Journal of analytical chemistry, vol. 341, numbers 5-6-springerlink [10] E.Kikuti, N.Bocchi, J.J.
Monterr, Simoes, Composition and structure of coloured oxide film formed by triangular current scan and cathodic, Corrosion Science, Vol. 49, Issue 5, May 2007, pages 23 [11] Tadayuki N.
Online since: December 2010
Authors: Ming Hui Xie, Ying Yang
(6) Calculation of the relating degree of the object about the grade :
(8)
The calculation example
First, supposes there are 3 sample projects, their cost risk is divided into 4 grades as , , and . 5 general cost risk evaluation indices are selected as follows: technical risk, contract risk, material risk, personnel risk and security risk [3].
For example, the calculation results of sample 1 are listed as fallows: Table 1 Relating degrees of each index of sample 1 about the 4 risk grades Iindices Technical risk Contract risk Material risk Personnel risk Security risk sample1 -0.720 -0.233 -0.682 -0.161 -0.333 -0.650 -0.080 -0.462 0.429 0.333 -0.300 0.357 0 0.385 0.222 0.417 -0.258 0 -0.188 -0.250 Third, the weight coefficients of indices are calculated.
Table 2 Weight coefficients of indices Indices Technical risk Contract risk Material risk Personnel risk Security risk 0.131 0.053 0.363 0.275 0.178 According to Eq. 8, relating degrees of sample projects for evaluation about the 4 grades are calculated.
References [1] Wen Cai: Matter-element Model and its Application (Science Technology Literature Press, Beijing 1994) [2] Junjun Zheng, Zhao Guiyu: J.
Vol. 18, Iss. 3(2000), p. 73-77 [5] Wei Li, Yuanrong Li, Xiue Yuan, Limin Cheng: The Application of Multilevel Matter-Element Analysis in Risk Evaluation of Logistics Center Selection. 6th Wuhan International Conference on E-Business, 26-27 May, 2007, Vols 1-4, p. 2578-2584 [6] Molenaar, Keith R: Journal of Construction Engineering and Management, Vol. 131, Iss. 3 (2005), p. 343-35
For example, the calculation results of sample 1 are listed as fallows: Table 1 Relating degrees of each index of sample 1 about the 4 risk grades Iindices Technical risk Contract risk Material risk Personnel risk Security risk sample1 -0.720 -0.233 -0.682 -0.161 -0.333 -0.650 -0.080 -0.462 0.429 0.333 -0.300 0.357 0 0.385 0.222 0.417 -0.258 0 -0.188 -0.250 Third, the weight coefficients of indices are calculated.
Table 2 Weight coefficients of indices Indices Technical risk Contract risk Material risk Personnel risk Security risk 0.131 0.053 0.363 0.275 0.178 According to Eq. 8, relating degrees of sample projects for evaluation about the 4 grades are calculated.
References [1] Wen Cai: Matter-element Model and its Application (Science Technology Literature Press, Beijing 1994) [2] Junjun Zheng, Zhao Guiyu: J.
Vol. 18, Iss. 3(2000), p. 73-77 [5] Wei Li, Yuanrong Li, Xiue Yuan, Limin Cheng: The Application of Multilevel Matter-Element Analysis in Risk Evaluation of Logistics Center Selection. 6th Wuhan International Conference on E-Business, 26-27 May, 2007, Vols 1-4, p. 2578-2584 [6] Molenaar, Keith R: Journal of Construction Engineering and Management, Vol. 131, Iss. 3 (2005), p. 343-35
Online since: February 2012
Authors: Xiakeer Saitaer, Xiao Ming Yang
Other dyeing materials include pomegranate, alum and copperas, etc.
As the result of long-term practices of Xinjiang people especially Uyghur people, these patterns symbolize the recreation of spiritual and material life by laboring people and embody their feeling, ambitions and esthetic sentiment.
Journal of Northwest Institute for Nationalities (society and science edition), 2000 [4] Abduvich·Tursun.
As the result of long-term practices of Xinjiang people especially Uyghur people, these patterns symbolize the recreation of spiritual and material life by laboring people and embody their feeling, ambitions and esthetic sentiment.
Journal of Northwest Institute for Nationalities (society and science edition), 2000 [4] Abduvich·Tursun.
Online since: July 2015
Authors: Valerii V. Bazarov, Pavel N. Togulev, Farkhad A. Nizamov, Nikolay M. Lyadov, Svetlana N. Ivicheva, Nail M. Suleimanov
Baikov Institute of Metallurgy and Material Science RAS, Leninsky Prospekt, 49, 119991, Moscow, Russia
avbazarov1@gmail.com
Keywords: MgB2 composites, magnetic pinning, microwave absorption, supercritical fluid, carbon nanotubes, nanoparticles
Abstract.
Introduction Practical applications of superconducting materials depend on the value of critical current density, which is determined by pinning of vortices.
Suleimanov, Journal of Superconductivity and Novel Magnetism, 25 (2012) 1689-1694
Introduction Practical applications of superconducting materials depend on the value of critical current density, which is determined by pinning of vortices.
Suleimanov, Journal of Superconductivity and Novel Magnetism, 25 (2012) 1689-1694
Online since: December 2013
Authors: Dong Ming Sun, Gui Rong Kang, Liang Yu Xia, Jian Sun
A Method for calculating the Amount of the deflection and force-energy parameters for copper-clad steel tube in the process of straightening
Liangyu Xia1,a,Dongming sun1, Guirong kang2,Jian Sun2
1College of Mechatronic Engineering ,Kunming University of Science and Technology,Kunming,650500,china
2The YuanQu smelter of Northern copper ,shanxi,043700,china
a415598019@qq.com
Keywords: copper-clad steel tube, straightening, deflection, force-energy parameters.
At present,some copper electrolysis enterprises have used the copper-clad steel material as the conductive rod.
Copper electrolysis enterprises every year there are a large number of conductive rods scrapped and caused a huge waste.In straightening areas, however,the main material of strainghtening object are single artifacts for the puer steel plate, bar, or pure copper and other metals.So it is very urgent to straightening the copper clad-steel conductive tube.From the existing straightening theory studying, This paper found out a suitable theory and tried to apply in copper-clad steel tube straightening.
In the expression (1), For the new material copper-clad steel tube it is clear that the straightening force should be less than the allowable contact strength [σa] and torque should be between the elastic limit bending moment and plastic limit bending moment Mt < Mi < Ms, the elastic limit moment Mt and plastic limit bending moment MS as known quantity can be obtained.
[4] YongZang.Steel roller straightening bending deflection elastic-plastic analysis.Journal of mechanical engineering.
At present,some copper electrolysis enterprises have used the copper-clad steel material as the conductive rod.
Copper electrolysis enterprises every year there are a large number of conductive rods scrapped and caused a huge waste.In straightening areas, however,the main material of strainghtening object are single artifacts for the puer steel plate, bar, or pure copper and other metals.So it is very urgent to straightening the copper clad-steel conductive tube.From the existing straightening theory studying, This paper found out a suitable theory and tried to apply in copper-clad steel tube straightening.
In the expression (1), For the new material copper-clad steel tube it is clear that the straightening force should be less than the allowable contact strength [σa] and torque should be between the elastic limit bending moment and plastic limit bending moment Mt < Mi < Ms, the elastic limit moment Mt and plastic limit bending moment MS as known quantity can be obtained.
[4] YongZang.Steel roller straightening bending deflection elastic-plastic analysis.Journal of mechanical engineering.
Online since: August 2013
Authors: Yun Li Feng, Zhuo Fei Song, Run Ming Feng, Shao Jiang Yin
Test material
The experimental materials get from thickness of 150mm continuous casting slab of T700 produced by a hot rolled sheet plant, its chemical composition is shown in table1, processed into thermally simulated specimen of 10mm in diameter and 15mm in length.
Acknowledgment Project supported by the National Natural Science Foundation of China (Grant No. 51074062) and Supported by Educational Commission of Hebei Province, China(Grant No. 12212122D).
Zhou, et al: Microstructure and Property of 700MPa Grade Hot Rolled Dual Phase Steel, Journal of Iron and Steel Research. 2009 ,21(8): 24-27 [5].
Acknowledgment Project supported by the National Natural Science Foundation of China (Grant No. 51074062) and Supported by Educational Commission of Hebei Province, China(Grant No. 12212122D).
Zhou, et al: Microstructure and Property of 700MPa Grade Hot Rolled Dual Phase Steel, Journal of Iron and Steel Research. 2009 ,21(8): 24-27 [5].