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Online since: November 2013
Authors: Jing Wang, Wen Qiang Wang, Cheng Chun Zhang, Lu Quan Ren, Lei Shi
The experiments data showed the aerodynamic noise of the two airfoils are reduced by 4-8dB and 4dB compared with the smooth airfoil[8].
(a) Arrangement of the sensors inside the cylinder (b) Arrangement of the sensors on surface of the cylinder Fig.12 Locations of the sensors on the cylinders 5 Analysis of experimental data The data from fluctuating pressure test is time series signals.
The results of the fluctuating pressure test data are the center frequency of 1/3 octave spectrum.
With ,. 5.1 Comparison of experimental data The sensor 1 and the sensor 5 are damaged during the experiment, so here only gives the fluctuating pressure comparison of other six sensors.
The wind tunnel experiment data show that the total fluctuating pressure of bionic wavy cylinder model is significantly lower than that of the smooth cylinder model at wind speed of 42m/s. 4.
Online since: October 2010
Authors: Feng Zhou, Zhi Cheng Tian, Guang Shuai Ding, Ying Fan, Shun Kun Wang
Therefore, it is highly necessary in practical production to study the distribution pattern recognition of small sample censored data, especially the data estimation method for small sample censored data, to make effective use of the potential information of small sample data, and to cultivate as much useful information as possible.
The Selection of the Data Distribution Parameter.
Distribution parameter of the selected results has great impact upon the data distribution pattern recognition.
The Breakdown of the Data Distribution Pattern.
The data series were sorted, and then the series of data were censored to make the value of data not less than "2500" in the training sample set.
Online since: January 2013
Authors: Wei Wei, Guo Tong Qin, Miao Lv
N2 adsorption/desorption data show that the highest surface area of aerogel fibers reached 241.6 m2/g with the average pore diameter about 10 nm.
With the reduction of the TiO2 content, the fiber continuity of the sample decreases, and the fracture becomes more severe.
With the reduction of the TiO2 content, the porosity of fibers increased gradually.
When MPVP: MTiO2 is more than 2.13, the porosity of aerogel fiber gradually decreases with the reduction of the TiO2 content.
The BET surface area, pore volume, and average pore diameter calculated from the N2 adsorption data are listed in Table 1.
Online since: October 2006
Authors: Teodoro Valente, Cecilia Bartuli, Giovanni Pulci
Main expected benefits are reduction of drag, enhancement in lift-to-drag ratio and reduction of interferences with radio frequency transmissions during the re-entry.
(a) (b) Fig.°2 XRD pattern of samples exposed at 1200°C for 30' (a); fitting experimental data relative to the thickness of oxide layer by a para-linear model for T=1200°C (b).
In Fig. 2 the para-linear fitting of experimental data is shown, evidencing very good correlation coefficients.
A simple parabolic fitting model (δ(t) = k1 t + k2) shows excellent correlation coefficients with experimental data (Fig.3b).
(a) (b) Fig.°3 XRD pattern of a sample exposed at 1800°C for 3' (a); fitting experimental data relative to the total thickness of oxide layer by a simple parabolic model for T=1800°C (b). 3.
Online since: December 2013
Authors: Zhao Zheng Song, Qian Qian Song, Qing Zhe Jiang, Bo Yuan, Wen Juan Song
Thus to meet mid-to long-term CO2 reduction targets, cost-effective CO2 separation technologies are key issue.
Table 2 summarizes literature data on the pros and cons of CO2 separation techniques [4-7].
The methods to calculate the costs for each of the cost categories and the entire data are drawn from them (Table 4).
The economic data of MA case are superior to MEA case contributed to the favorable operation and low solvent losses, meaning that using membrane gas absorption process can save the capture investment and reduce CO2 avoided cost.
Compared the data revealed in Fig. 3 and 4, effect of regeneration energy requirements on CO2 avoided cost is more sensitive than that of capital cost.
Online since: October 2014
Authors: Kun Peng Wang, Wan Hong Zhang
This oxidation peak will usually have a similar shape to the reduction peak.
Furthermore, by compare the test data of two groups of the samples, one is 0318, MCMB22, AGP-3-2, and another is 0318-GLQ, MCMB22, GP-3-2-2, we can see that mixed processing may be uncertain about the performance improvement of the first efficiency, and even worse.
From the data listed in Table 3, we can predict the reversibility of AGP-3-2-2 is best, and AGP-3-2 is worst.
From the experiment data in Fig.1, we can see the high-rate performance of AGP-3-2-1 is superior for the first cycle, but for the 2nd and 3rd cycle, the peak current of AGP-3-2-2 is greater, so the rate performance of its is superior, According to the test results in Fig.1, the high-rate performance of the samples in the order is: AGP-3-2-2 > AGP-3-2-1 > 0318-GLQ > 0318 > MCMB22 > AGP-3-2.
By the comparison analysis of the data for 0318-GLQ, 0318 and AGP-3-2-1, AGP-3-2, we know the pitch-coating modification have a positive effect on improving rate performance of the material. 3 Conclusions 1) The surface conditions of different materials will be a big difference, modification of materials will change their surface state, and then effect the formation of a uniform SEI film, which is an important factor for the electrochemical performance of battery.
Online since: August 2007
Authors: Mahyar Mahinzaeim, Jack M. Hale, D.C. Swailes, Reinhard Schmidt, B. Johanning
An additional data acquisition system is also available to log the dynamic behaviour of the system.
On the basis of the input-output data recorded during the experiments a linear model was constructed according to [3], 1 1 1 ( ) ( ) ( ) ( ) ( ) ( ), A z y kT B z u kT C z z kT − − − = + (1) where 1 1 1 1 1 0 1 1 1 1 ( ) 1 , ( ) , ( ) 1 .
Experimental Results Encouraged by the results obtained from preliminary simulation studies, the regulator and estimator algorithms were programmed using MATLAB/Simulink ® and implemented in the data acquisition and control board dSPACE ® DS1401 for further experimental investigations.
Both AVR systems have achieved a significant vibration reduction in the first eigenmode, which is important for riding comfort.
With this in mind, more effort devoted to the dynamic model reduction of distributed structures and to the development of adaptive regulation algorithms is required.
Online since: December 2014
Authors: Jefferson Fabrício Cardoso Lins, Claudinei dos Santos, Alexandre Fernandes Habibe, Durval Rodrigues, José C. Minatti, Luis Alberto dos Santos
Table 1 – Characteristics of the products studied in this work (manufacturer data).
The features of the diffractograms indicate a reduction in the peak intensity of Co due to the increase in milling time.
Conclusions The results indicated a reduction of the particles size and spheroidization. as function of increasing of milling time, in a ball/powder ratio of 6:1.
The metal chips were reduced particle size, with respective reduction of the crystallite size on the order of 50% in 120 minutes of grinding.
Pensilvânia: Swarthmore, International Centre for Diffraction Data., 2010
Online since: June 2014
Authors: Ahmad Mustafa Hashim, Noraini Khairuddin
However, few data are yet available to support this assumption.
Wave reduction is expected to be reliant on the density of vegetation and the surge water level.
When the waves encounter the densest vegetation, the largest rates of wave reduction occur [13][11].
Whereas a 20 years Rhizophora forest can offer up to 98 % wave reduction.
A Laboratory Study on Wave Reduction by Mangrove Forests.
Online since: January 2009
Authors: Yun Huai Zhang, Xiao Yan Fan
The results show that the higher annealing temperature, the larger oxidation/reduction peak separation.
The phase formation and transition temperatures observed in this work are in a good agreement with the literature data [31,32].
Their reduction- oxidation peak separation was approximately 0.273V and 0.697V, respectively.
However, reduction-oxidation peak separation of TNT/500ºC electrodes was approximately 1.905V.
The results of cyclic voltammetric tests show that a pair of oxidation/reduction peaks was observed and the higher annealing temperature, the larger oxidation/reduction peak separation.
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