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Online since: March 2016
Authors: Xu Wang, Jing Nan Liu, Si Qing Li
As shown in Fig. 1, is the alloy exhibits bi-modal microstructure with equiaxed primary α phase evenly distributed on transformed β phase.
The medium fatigue strength 1×107 cyclic at room temperature and 650℃ are 474MPa and 430MPa, respectively.
References [1] J.M.
Qi, Research and development of high temperature titanium alloys at 600 ℃, Titanium Industry Progress. 29(2012):1-5
Liu, Effects of aging treatment on properties of Ti65 high-temperature titanium alloy, The Chinese Journal of Nonferrous Metals. 23(2013):477-479
Online since: June 2012
Authors: Da Ming Chen, Jiang Feng Tong
Stoichiometric amounts of Al(NO3)3.9H2O and Mg(NO3)2.6H2O are mixed in such a way that the Al AND Mg ratio is maintained at 2:1.A small amount of water is added to it to form limpid solution.
Figure 1 shows the flow chart of the procedure used for the preparation of MgAl2O4 powders.
Conclusion (1) Preparation of nanocrystalline MgAl2O4 powders using polymer gel reaction is technically simpler, more cost effective, and more time and energy efficient than other technology
References [1] L.L Shaw, Z.G.Yang, R.M.Ren: Characterization of thermal sprayed nanostructured WC-Co coatings derived from nanocrystalline WC-18wt.
[12] O.VARNIER, N.HOVNAIAN Synthesis of a microporous MgAl2O4 spinel from alkoxide sols containing acetylacetone[J]Mater.Res.Bull.,1994,29,479-488
Online since: October 2011
Authors: Lin Hua Zhang, Li Na Chang
The Influence of Natural Ventilation to the Thermal and Moisture Environment in a Passive Greenhouse Linhua Zhang 1,2,3,a, Lina Chang 1,4,b 1 School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan,Shandong, 250101, China 2 Key Laboratory of Building Energy-saving Technique of Shandong, Jinan, Shandong, 250101, China 3Key Laboratory of Renewable Energy Utilization Technologies in Buildings of the National Education Ministry, Jinan, Shandong, 250101, China 4Shandong Urban Construction Design Institute, jinan, Shandong, 250002, China azlinhua@yahoo.cn, bchanglina@163.com Keywords: soil-walled passive greenhouse, tri-dimensional unsteady model, thermal and moisture environment, natural ventilation, air velocity.
The simulation results and the experimental data of greenhouse operating parameters which include the indoor air temperatures as well as the RH are compared for validation, as shown in Figures 1 and 2.
Fig. 1 Comparison of measured and predicted indoor air temperature Fig. 2 Comparison of measured and calculated indoor relative humidity Results and Analysis.
References [1] Bartzanas,T., T.
Kittas, “Effect of vent arrangement on windward ventilation of a tunnel greenhouse”, Biosystems Engineerin, Vol. 88, issue 4, 479-490, 2004 [2] Kim, K.
Online since: March 2006
Authors: Ju Hyun Myung, Hyoun Woo Kim, S.H. Shim
Also, indium oxide (In2O3), which is a wide bandgap transparent semiconducting material, has been widely used in the microelectronic applications [1,2].
Fig. 1c and 1d, respectively, show the EDX spectrum corresponding to the regions indicated by arrow 1 and arrow 2 in Fig. 1a.
(c,d) EDX spectra from the regions indicated by (c) arrow 1 and (d) arrow 2 in Fig. 1a.
References [1] C.
Forum Vol. 475-479 (2005), p. 3513
Online since: April 2007
Authors: Zhao Yun Tang, Ming Xing Ai, Hong Xiang Zhai
The results of x-ray diffraction (XRD) showed that the Ti3AlC2 powder used is nearly pure, and no impu- rities were identified, as shown in Fig.1.
Fig.1.
EDS patterns via a line scanning along the white line marked in Fig.1.
References [1] M.W.
Forum, Vol. 475-479 (2004), pp.1251 [5] H.X.
Online since: September 2019
Authors: Faouzi Hanini, Mourad Khechba, Abderrahmane Bouabellou, Somia Gattal, Hichem Farh
These peaks located at about 398.68 cm-1, 516.22 cm-1 and 638.04 cm-1 which can be assigned to SnO2 optical phonons.
It is clear that the most intense peak is observed at 638.04cm-1.
References [1] C.
Ramamurthi, Materials Science in Semiconductor Processing, 16 (2013) 427-479
Lett., 26 (7) (2009) 077803-1-077803-4
Online since: January 2007
Authors: Isak Rajjak Shaikh, Sang Eon Park
The molar ratio of the above reactants was as follows: (1-0.3) NiCl2. 6H2O:0.3 CoCl2.6H2O:1.0H3PO4:3.0 TEA:200H2O (where the molar ratio of cobalt in the overall metal was 0.3).
[Fig. 1] The powder XRD pattern and SEM techniques revealed the as-synthesized novel cobalt-nickel phosphate CoNiPO4 exhibited high crystallinity and homogeneous morphology ([Fig. 2], typically a stacked sheet shape).
[Fig. 3(b)] Fig.1.
References [1] S.
Lever, Inorganic Electronic Spectroscopy, Elsevier, Amsterdam, (1984) 479.
Online since: April 2014
Authors: Yan Hui Lu, Duan Yang Li, Shou Yi Yang, Wei Wang
Introduction With the increasing demand for wireless services, existing fixed spectrum assignment policies [1] have led to a serious deficiency in valuable spectral resources.
System Model As in Fig.1, we consider a multiuser MIMO CR system composed of K secondary users and one primary user.
It’s assumed that each user has nT=12 transmit antennas and nR=3 receive antennas, the maximum transmit power for each transmitter is Pk=1, and the maximum tolerable interference power is PSU,k=0.1.
References [1] Force, FCC Spectrum Policy Task: Report of the spectrum efficiency working group (2002)
Selected Areas in Communications, IEEE Journal on 29.2 (2011): 469-479
Online since: November 2015
Authors: Andrzej Buchacz, Andrzej Baier, Piotr Ociepka, Krzysztof Herbuś, Michał Majzner
In Fig. 1 is shown the CAD model of the stand and built, on its basis, the real laboratory stand.
Fig. 1.
Table 1.
References [1] P.
Ociepka, Motion analysis of mechatronic equipment considering the example of the Stewart platform, Solid State Phenomena. 220-221 (2015) 479-484
Online since: December 2010
Authors: Xiao Lei Wu, Fu Ping Yuan
Introduction UFG/NC materials have unique mechanical properties, such as increased strength/hardness, improved toughness and enhanced diffusivity compared to their coarse grained counterparts [1].
Fig. 1 Hat-shaped specimen set-up in Hokinson bar experiments.
The hat-shaped specimen set-up for Hopkinson-bar testing is shown in Fig. 1.
References [1] M.A.
Vol. 49(2009), P. 479.
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