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Online since: June 2012
Authors: Xiao Lan Yang, Ji Feng Liu, Jing Chao Zou, Min Ping Jia, Fang Min Xv
Multi-wave cycle period is set to an odd number, for example: 7,9,11, etc.
It can be known from Figure 7 that the average size of powder after grinding is 0.197μm, it confirms that this high vibration intensity system can refine grain, improve production capacity, shorten the grinding time, and obtain better crushing effect with a shorter time.
Online since: May 2011
Authors: Dian Hua Wang, Song Yuan Zhang, Xin Guan
The outflows can be used for room heating, grain drying, and air preheating.
Table 1.The electrical properties of Electro thermal integrated components and conventional components under STC Serial Number VOC ISC Pm Vm Im 1550299080149 (PV) 36.33 8.09 213.5 28.49 7.49 1550299080152 (PV/T) 36.28 8.16 215.2 28.49 7.55 The electrical performance parameters of the two components were very close.
Online since: October 2012
Authors: S.G. Shabestari, H. Saghafian, P. Ghaemmaghami, A. Osanlo
The slugs were cut and held at 600 ± 50 C for 20 min to allow the spheroidization of the grains.
The size of primary silicon particles reduced 53% and the number increased 76% compared with that of the as-cast sample.
Online since: August 2013
Authors: Yun Peng Du, Kong Zhai Li, Yong Gang Wei, Hua Wang, Zi Song Liu, Xing Zhu
After 30 redox cycles, the conversion rate of reduction is still similar, implying that the carrier’s reactivity was not affected by the number of cycles in use.
This can be explained by the redox cycle, in reduction process, there will be a lot of heat release out, then catalyst will generally exist hot spot effect, thus induced grain growth or the production of sintering phenomenon.
Online since: April 2014
Authors: Qing Min Liu, Hong Xia Li, Xin Wu
The coating surface is composed of grains with different diameters, which are melted and unevenly distributed on the coating surface.
It is found that the number of pores is obviously reduced, and the surface becomes compact with increasing electrolyte concentration from 3g/l to 12g/l.
Online since: February 2008
Authors: Mohamad El Mehtedi, M. Simoncini, Carlo Bruni, Lorenzo Donati
Experimental procedures The AZ31 alloy was investigated in the as-extruded condition and after an heat treatment at 500°C for 2h in order to achieve a fully equiaxed and coarse grain structure [10].
Equivalent stresses (σ) and strains (ε) were derived from τ and γ using the von Mises criterion: (1) (2) where Γ is the torque, N the number of revolutions, p ( T,NNlogd/logd & Γ= )the work hardening rate and q ( T,NNlogd/logd &Γ= ) the revolution rate sensitivity of torque.
Online since: August 2008
Authors: Bussarin Ksapabutr, M. Panapoy, M. Saengsil
Introduction The growing attention has been dedicated to intrinsically conducting polymers (ICPs) during the last decade due to their availability of a diverse range of monomer analogues, possible modifications of basic polymer and dopant systems, and formation of film coating on various substrates These properties may be useful in the realization of a number of devices, such as electronic circuit components, light-emitting diodes, and sensors [1].
At higher EG concentration, the electrical conductivity decreased owing to a reduction of PEDOT/PSS concentration, which lowers the density of connections between the grains.
Online since: January 2009
Authors: Robert Panowicz, Jacek Janiszewski
Zerilli-Armstrong model for fcc metals is based on dislocation mechanics: ( ) 1 2 1 2 1 2 3 exp ln G s s T s T kd σ σ ε ε − '= ∆ + − + +& , where ∆σ'G, s1, s2, s3, and k are the material constants and d is the average grain diameter.
Conclusions On the basis of the presented work, general conclusions may be drawn: • dynamic material behaviour for electromagnetic expansion is quite well described by the presented above electro-mechanical model; • from among the analysed constitutive models, SG and PTW equations seem to be the most appropriate for freely expanding ring test, however, SG model needs smaller number of constitutive relation parameters than PTW model and material parameters for SG equation is easier to find relatively in specialistic literature; • despite the fact that JC model gave the worse results, modifications of this simple and the most popular model by application of Gurson-Tvergaard-Needleman yield condition with the evolution of porosity as the sum of the rate of growth and rate of nucleation of voids should allow us to receive better agreement between the calculated and experimental data.
Online since: October 2008
Authors: R.A. Ikegami, B. de M. Purquerio, C.A. Fortulan, Claudia C. Camilo, Arnaldo R. Santos
The sucrose particles were poured and mixed into the alumina ceramic slurry and dried in hot air to obtain the sucrose-powder grains.
Quantitatively, the results showed that cell numbers on the non coated alumina and coated alumina scaffolds were very close to the negative toxicity control, as shown in Fig.2.
Online since: July 2019
Authors: Tri Widodo Besar Riyadi, Tjipto Sujitno, Bambang Waluyo Febriantoko, Tri Tjahjono, Margono Margono, Suprapto Suprapto
However, the nitriding occurred at high temperatures and long durations can lead to the high deposition and undesirable grain growth of nitrogen atoms which could decrease both strength and corrosion resistance [1].
Thus, further increase of gas pressure can only increase the number of the ionized nitrogen atom in the Al surface, as also occur in the increased nitriding time.
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