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, the sample was degassed at 200 °C for 12 h. The specific surface area and total pore volume of sample were determined by the BET (Brunauer–Emmett–Teller) method and the BJH (Barrett–Joyner–Halanda) method, respectively. The thermogravimetric (TG) analysis of the used H-ZSM-5 zeolite catalysts was implemented on a NETZSCH-STA 409PC DSC-SP thermal analyzer with 5–10 mg of sample by increasing......
with preset thermocouple 2.3 Taguchi experimental design To investigate the effects of welding parameters on joint strength, the Taguchi analysis, as an efficient DoE method, could improve the performance... significance of welding parameters. The contribution of each process parameter to response was also calculated using ANOVA method. Table 2 Experimental parameters of Taguchi L9 orthogonal array 2.4......
external temperature method on the basis of knowing the oxygen isotopic composition of paleo-seawater and synsedimentary minerals. The ore bodies of the Qujiashan deposit are hosted in the third lithologic..., DUO Ji. The research method of ore deposits [M]. Beijing: Science and Technology Press, 2009. (in Chinese) [27] OKITA P M, MAYNARD J B, SPIKER E C, FORCE E R. Isotopic evidence for organic matter......
by the linear regression method from the plot of ln qe versus ε2. The value of mean adsorption energy, E (kJ/mol), is the free energy change when 1 mol of ion is transferred to the surface of the sorbents...;j) are obtained from the single ion adsorption isotherms. The other parameters (ηi,j, xi, yi, zi, ai, bj, mi,j) can be obtained from the curve fitting method [41] based on the quality of fitting......
, the best method to minimize the corrosion process is to slow down the hydrogen evolution rate, which can be accomplished by the addition of small quantity of other metals as Pb, Bi, In and /or Al... at φcorr and 30 °C It is well known that the EIS is a helpful method for investigating the mechanism of corrosion processes and adsorption phenomena. In order to back the data obtained from the PDP......
Yin-ping, YANG Chun-he, JIANG De-yi, DAEMEN J J K, CHEN Jie, KONG Jun-feng. A new method of surface subsidence prediction for natural gas storage cavern in bedded rock salts [J]. Environmental Earth..., testing and monitoring: 2007-2014 [R]. Springer International Publishing, 2014. [29] BAHRANI N P, KAISER K, VALLEY B. Distinct element method simulation of an analogue for a highly interlocked, non......
Introduction Chalcopyrite is the most abundant copper- bearing mineral, which accounts for about 70% of the world’s copper resources [1,2]. Currently, the most common method for recovering copper from..., and the binding energy of the 2p3/2 peak was 1.19 eV higher. The background of the spectrum was based on the Shirley method [38]. Table 1 Experiment parameters for bioleaching and chemical leaching systems......
by metallographic method to be around 1010 °C. The as-received Ti-6242S was treated via solution treatment at 1050 °C for 35 min followed by quenching in water to obtain an acicular... via stress-strain curves corrected for friction and deformation heating effects following the method by EVANS and SCHARNING [15] and DIETER et al [16], respectively. Figure 2 shows the stress–strain......
progress in the lead-smelting process of QSL method [J]. Hunan Nonferrous Metals, 1997, 13(1): 34-38. [4] 何蔼平, 魏 昶, 黄 波, 吴浩波, 谭春娥. 面向21世纪我国铅冶炼技术的改造和发展思考[J]. 有色金属(冶炼部分), 2000(6): 2-6. HE Ai-ping, WEI Chang... of lead from spent lead batteries by hydrometallurgical method[J]. The Chinese Journal of Process Engineering, 2009, 9(S2): 71-75. [9] 陈维平, 龚建森, 陈范才. PbSiF6-H2SiF6体系电沉积铅的电化学[J]. 中国有色金属学报, 1996, 6(3......
promising method to obtain fine grains under conventional welding conditions. In RCFSW, the cooling medium is jetted on the tool and the workpiece. In this way, the heat effect can be reduced...: 643-651. [55] Liu X C, Sun Y F, Nagira T, Ushioda K, Fujii H. Evaluation of dynamic development of grain structure during friction stir welding of pure copper using a quasi in situ method [J]. Journal......