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Online since: September 2009
Authors: Danut Ionel Vaireanu, Anca Cojocaru, Ioana Maior, Simona Caprarescu, Alexandra Ionescu, Valentin Radu
The effect of frequency range and number of measurements/decade on the experiment duration However, taking into account both table, it results that a significant reduction in experimental duration (almost half the time) can be obtained employing 10 measurements/decade without running the risk of compromising the experimental results.
A Nyquist plot of a PESA (polysulphone based membrane) and the corresponding EIS value of the real part of impedance, R1; d = 0.0211cm, σ= 1.418.10-5 Ώ -1cm-1 As one can see, the circular regression correlation coefficient, n = 0.974, obtained from 30 points regression is above 0.95 which suggest a very good fit of the experimental data with the Randles simulated values.
Online since: December 2012
Authors: Zhi Qun Cheng, Li Wei Jin, Wen Shi
Then this modeling approach in providing accurate predictions required for big signal, for example, measured loadpull information, the GaN HEMT’s scattering parameters and corresponding simulated data are compared in the following Table. 1 and Fig. 2.
The insertion loss of the hybrid coupler can cause a reduction in total added power and combining efficiency, so it is an important task for Wilkinson design.
Online since: March 2006
Authors: Gabriela Maria Atanasiu, N. Curcudel
conventional seismic load that may be supported by the structure, base shear force, respectively; necesarS is the conventional seismic load, base shear force determined according to §5.3 of P100/92 provisions [1], which considers the structure respectively as being new and calculated with the relation done in Eq.2 [2]: rrsr r necesar kc GcS ε⋅ψ⋅β⋅⋅α= ⋅= (2) in which: rc is the global seismic coefficient corresponding to the r mode of vibration; G , gravitational loads resultant for the whole structure; α, building importance coefficient, depending on structural importance classes; sk , seismic intensity coefficient, depending on the design seismic location; rβ , dynamic gain coefficient for the r vibration mode, depending on the spectral composition of the seismic movement of the building's location; ψ, coefficient of seismic effects reduction
Although the method we used is deterministic, the case study of the shear walls structure has offered a data base that proves to be sufficient in making the decision to seismically rehabilitate the structure as this is one of the quality procedures used in assessing the seismic safety of structures.
Online since: March 2006
Authors: Iskandar Idris Yaacob, W.S. Yeo
The hcp phase was identified by JCPDS data card.
This reduction could explain the presence of a mixture of the fcc and hcp phases after 40 hours of milling as observed by Huang et al [5].
Online since: May 2004
Authors: Snezana Bošković, B. Matović
At the same time, there is a substantial reduction in the processing temperature [2].
This is in good agreement with the published data [8] for the vapor pressure of Li2O and its evaporation at higher temperatures.
Online since: June 2008
Authors: Shou Ju Li, Ying Xi Liu, Li Juan Cao, Zi Chang Shangguan
Chang (2004) finished the numerical and experimental investigation on residual stress and compared the numerical solutions with experimental residual stress data [4].
Instead, the method deactivates them by multiplying their stiffness by a severe reduction factor.
Online since: February 2008
Authors: Guo Qiang Tan, Hong Yan Miao, Hui Jun Ren, Zhi Wei Yu, Hui Qin Li, Jia Li
By calculation from XRD data, the average grain size of the powders is 29nm while the grain size of Si3N4 powder prepared by sol-gel carbon thermal process [5] at 1500 o C is 100~400nm.
This reveals that when the addition of glucose is higher than the theoretical value, the carbon thermal reduction will be promoted and the amorphous SiO2 will be fully turned into Si3N4 crystal.
Online since: January 2015
Authors: Anton O. Ochoa Bique, Alexey G. Goryunov
Figure 4 – Effect of initial conditions on the uranium crystal growth Increase of the uranium crystal rate, depending on reduction of the initial temperature (C0 = const) and on the increase of the initial concentration, (T0 = const), takes place, since in both cases there is an increase of the initial supersaturation.
Further, it is planned to apply the approach of cellular automata of uranium to model process of crystallization of uranyl nitrate hydroxide to further test the model obtained with the experimental data using the linear crystallizer.
Online since: June 2014
Authors: Yue Yang Xu, Hong Liang Wang, Bing Li, Jian Ming Xue, Chun Yuan Ma, Jian Min Chen
Effect of fractal dimension of powder activated carbon on SO2 adsorption Bing Li1, 3, a, Jianming Xue1, Yueyang Xu1, Hongliang Wang1, Chunyuan Ma2, Jianmin Chen3 1GuoDian Science and Technology Research Institute, No.10, Pudong Road, Nanjing 210031, Jiangsu Province, China 2National Engineering Laboratory for Coal-fired Pollutants Emission Reduction, Shandong University, No.17923, Jingshi Road, Jinan 250061, Shandong Province, China 3School of Environmental Science and Engineering, Shandong University, No.27, Shanda South Road, Jinan 250100, Shandong Province, China a13869187893@163.com Keywords: activated carbon, SO2, adsorption, fractal dimension.
Each gas is first individually introduced through a mass flow controller (Sevenstar CS200) and then mixed in the mixing chamber. 1-Gas cylinder; 2-Valve; 3-Mass flow controller; 4-Water; 5-Gas mixer; 6-Water bath; 7-Reactor; 8-Electric heating device; 9-FT-IR gas analyzer; 10-Data collection system Fig. 1 Schematic diagram of the experimental system All experiments are conducted with a gas flow of 200 ml/min (at 1 bar, 298 K).
Online since: August 2011
Authors: Qi Fu Wang, Ying Jun Wang, Gang Wang
In recent years, BEM is used for structural performance analysis for the reason that BEM can decrease unknowns and make the mesh generation much easier because of the dimension reduction of the Boundary Integral Equation(BIE) formulations[3].
Eq. 1 has the matrix representation: . (2) where and and are 3 by 3 submatrices: . (3) From the Eq. 3 above, it is easy to find that the computations of and just need the data of element e and f are irrelative of the other elements.
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