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Online since: September 2016
Authors: Meenakshi Sundaram Omkumar, Manickam Ravichandran, Arumugam Manikandan
Results show that addition of B4C improves the properties of Al-B4C composites. 1.
However, metal matrix composites are right choice for these applications because of their potential properties [1].
Fig.1.
References [1] S.
Alloys Compds, 479 (2009) 334–341
Online since: November 2007
Authors: Barry C. Muddle, Rimma Lapovok, Dacian Tomus, H.P. Ng, Colleen J. Bettles
One such novel technique is the process of Equal Channel Angular Extrusion (ECAE), which is described schematically in Figure 1.
It has been found that ECAE enhances compaction in magnesium to full density very effectively [1].
Figure 1: Equal Channel Angular Extrusion: a - schematic of the processing; b - rig for elevated temperature processing.
References [1] R.Lapovok and, P.F.Thomson, in: Nanomaterials by Severe Plastic Deformation: Fundamentals - Processing - Applications, (2003), p.551 [2] R.Lapovok, D.Tomus and B.C.Muddle.
[9] M.Morinaga, Y.Murata and H.Yukawa: Mat Sci Forum 449-452 (2004), p.37 [10] M.Morinaga, M.Yoshino, A.Shimode, K.Okabayashi, H.Nakamatsu and R.Sekine: Mat Sci Forum 449-452 (2004), p.77 [11] M.Morinaga, Y.Murata and H.Yukawa: Mat Sci Forum 475-479 (2005), p.3099
Online since: June 2011
Authors: D. Popovici, Gabi Jiga, Gheorghe Paltanea, Veronica Manescu Paltanea
By reducing size and mass of devices through MEMS technology, the performances of accelerometers, mass-flow sensors, bio-chips, RF devices have been improved [1].
a) b) Figure 1.
References [1] S.
Journal on Smart Sensing and Intelligent Systems, vol. 1 (2008), pp. 480-497
Conf. on Modeling and Simulation of Microsystems, 1998, pp. 474-479.
Online since: February 2014
Authors: Johny Wahyuadi Soedarsono, Andi Rustandi, Rosoebaktian Simarmata, Rianti Dewi Sulamet-Ariobimo, Seto Tjahyono, Aidil Zamri, Adji Kawigraha
The mass ratios are 1:4 and 1:5.
The mass ratio of lateritic powder and coal varied to 1:4 and 1:5.
The results show that ratio 1:5 provides more carbon than 1:4.
References [1] R.K.
Morita, Pre Reduction of Iron Oxide with Coal Carbonization Gas, Ironmak Steelmak. 31(2004) 479–484. [9] N.
Online since: March 2016
Authors: Liang Zhou, Lei Ma, Shi Qian Zhao, Lin Yi Cheng, Yu Song Du
These MB(T) measurements were performed in sweep mode at a temperature rate of 2.0 K min-1.
Fig. 1 X-ray diffraction patterns of Mn100-xFex (x=50, 58) samples.
It may be that the particle sizes gradual grow up in the process of annealing and have the most appropriate value when annealing 1-3 h, corresponding to the stable and compact structure shown in Table 1.
Reference [1] J.
Alloys Compd. 479(2009)204
Online since: December 2010
Authors: Jiao Lian Luo, Teiko Okazaki, Koji Yamada, Hiroyasu Shimoji, Yasusi Nakahata, Edmund Bartosz Borkowski, Takashi Todaka, Masato Enokizono
In the longitudinal magnetic field (B) configuration (sample current I //B), the longitudinal magnetizations and the longitudinal sample resistances were simultaneously recorded by analogue to digital converter at each 1 ms up to 100 ms with an accuracy of 1/4096 (=12 bits) resolution.
Fig.1 shows the charged voltage dependence of the generated fields in a voltage range up to 1.2kV (32 T), where the condenser bank was connected with the scale diodes to prevent the inverse current, by which the generated magnetic fields show only positive field along with the lapsed times.
Fig.1 Waveforms of generated pulsed fields by different charged voltages in the condenser bank.
References [1] S.
Forum, 475-479, (2005), 2189
Online since: March 2006
Authors: Sung Yi, Mok Soon Kim, Taek Kyun Jung, Dong Suk Lee, Si Joon Noh
The composites acquired the CPS varying from 1 to 5.8 % and the MCS from 1.26 to 0.74 GPa, with increment of the volume fraction of Al-4Fe-0.6Mo-1.1V-0.3Zr alloy from 0.3 to 0.7.
The spherical Al-Fe based alloy powder (<50㎛, Fig. 1-b) which was fabricated by a gas atomization method is almost composed of crystalline phases, such as fcc-Al and Al-Fe based intermetallics (Fig. 1-c).
In contrast, the monolithic Al-Fe based alloy (Vf=1) possesses noticeably high CPS of 25% with the MCS of 0.71GPa.
References [1] A.
Forum Vols. 475-479 (2005), p. 3493 [4] W.Y.
Online since: September 2014
Authors: Pascal Besson, Marie Christine Roure, Sylvain Vialle, Mickaël Rebaud, Hervé Fontaine
GaAs etching took place firstly in a diluted SC1 solution (0.02/1/20) in a 40 litres recirculated tank and secondly in a more concentrated SC1 solution (1/4/100) in a 9 litres tank in a static mode.
Surface concentration (at/cm2) measured on silicon wafers Si-OH initial surface Si-H initial surface Chemistry GaAs Thickness etched (µm) [Ga] [As] [Zn] [Ga] [As] [Zn] SC1 0.02/1/20 - 65°C 19.8 4.3x1013 4.4x1012 1.1x1010 - - - SC1 1/4/100 - RT 7.9 8.3x1013 1.6x1013 1.5x1012 8.1x1013 1.4x1013 8.5x1011 SC1 1/4/100 - RT 1.7 2.3x1012 1.4x1010 7.6x1010 1.1x1013 1.3x1010 3.6x1011 Chemistry InP Thickness etched (µm) [In] [P] SC2 1/1/80 – 65°C 0.1 6.1x1012 <1.7x1012 If a 100 mm InP wafer is processed in same time than silicon wafers in a SC2 solution, In species are clearly detected on silicon by TXRF although such SC2 mixtures solutions are dedicated to metallic contamination removal.
Further investigations have been conducted in the case of GaAs etching in a SC1 1/4/100 @ RT.
References [1] J.A.
Alamo, Nature, 479, 317 (2011)
Online since: March 2020
Authors: Chun Fu Zhu, Guang Yu Zhao, Pei Feng Cheng
Actually, reflective crack is produced under resultant actions of temperature and moving traffic [1,2].
Taking the pavement temperature measurements from January 2009 to June 2011 collected by Harbin Institute of Technology as the temperature loads, the stresses and strains at the asphalt overlay nodes in the cement slab joint area were analyzed and compared. 4.1.1.
Therefore, further studies are required to determine the possible cracking locations and forms. 4.2.1.
References [1] A.
Pavement Eng. 18 (6) (2017) 1–11
Online since: December 2014
Authors: Xi Luo, Xi Min Sun
Journal of Finance, 2004, 59(2):479-505. ]but systemic and clear theoretical system is not given. 2.
The research process is shown in Figure 1: Fig.1: Research Process of Grounded Theory 3.
Tab 1 is as follow: Tab.1 Categories in Open Coding No.
to competitors, specifically including: iron ores (9-9-7-1),mines resources (9-12-7-4 ),etc. 6 Risk Diversification It means avoiding the risk based on investment and development in multi-channel and multi-aspect, mainly including: taking into account the multi-aspect (3-9-2-5), financing capacity (10-4-2-1),etc. 7 Economy of Scope It means decreasing the unit cost through expanding business scope, increasing product category and producing two or more kinds of production, mainly including: integration of coal and electricity (6-1-1-1),cement for building (9-7-5-2),etc. 8 Economy of Scale It means that expanding the production scale makes economic effect increasing, specifically including: external market development (5-10-6-1), financial scale (8-9-8-1 ),etc. 9 Market Force It means enterprise has dominated competitive force in market relative to competitors or counterparty, mainly including: principal market (1-8-4-7), bargaining capacity (5-7-5-1) ,etc. 10 Resources Sharing It means
and development, specifically including: setting up Longman Iron & Steel group (9-10-7-2), technology institute (11-1-1-1 ), etc. 19 Function Association It means function association in research and development, purchasing, production, logistics, marketing, management, financing and service, specifically including: logistics channel (9-11-7-3), research platform (11-7-5-1 ), etc. 20 Political Association It means the influence that comes from the claim of national policy and government policy, specifically including: setting up Shaanxi Railway Investment Group (10-1-1-1), Ministry of Railway (10-6-3-2) , etc. 3.2 Axial coding Axial coding is to establish relationships among different categories which are divided in the open coding, through the type analysis. 3.3 Selective coding Selective coding is a process about comparing the core of selective category with the other categories to checking their relationships and completing the category which conceptual development has not
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