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Online since: September 2012
Authors: Ya Ming Tang, Yang Tian
In visbreaking desorption characteristics of the dung beetle, domestic and foreign scholars have proposed a geometric non-smooth Surface drag reduction [1-3].In order to understand the cut of the cutting characteristics of the soil mechanical bionic cutter with soil, Dredging cutter metal materials, non-smooth surface of the sample the typical pit-shaped sticky soil direct shear tests were used to measure the pressure of soil under the resistance shear strength index, and compare the process of cutting the sample suffered the cohesion and friction, has been the reduction of the different parameters of the bionic surface adhesion and resistance effects, and provides a reference for the optimization design of the bionic cutter.
Table 1 Concave cutter surface texture parameters The bionic tool’s name Concave cutter 1 2.6875 2.6875 10 9.1681 Concave cutter 2 4.0313 4.0313 13.7454 13.3250 Concave cutter 3 4.7031 4.7031 15.7128 19.0887 Concave cutter 4 5.3750 5.3750 18.2639 18.3724 Test records and results analysis Test records and results analysis of direct shear test, including direct shear test data records and test data processing.
According to experimental data obtained the normal stress σ and shear stress τ imposed in test of each group.The leverage presented in DJY-4 quadruple strain direct shear apparatus, its ratio is 12:1.
Boundary Layer Drag Reduction Using Riblets.AIAA paper.(1982),82-0169
Online since: March 2009
Authors: Kevin Matocha, Greg Dunne, Vinayak Tilak
A reduction in interface trap density has been observed by growing the SiO2 using N2O precursor and subsequent anneal in NO [3] leading to an increase in the inversion layer mobility [4].
The dashed line is a fit of the data and the solid line is the charge expected from theory.
The dashed line is a fit of the data and the solid line is the charge expected from theory.
In figure 3, Dit is plotted versus surface potential to illustrate the incompatibility of the interface state model with observed data.
The reduction in the mobility at higher doping concentration cannot be explained by reductions in the bulk mobility with increased doping.
Online since: April 2009
Authors: Nigel A. Stone, Mark A. Gibson, Robert Wilson, G.M. Delphine Cantin, Trevor Kearney, Sri Lathabai, David Ritchie, Merchant Yousuff, Raj. Rajakumar, Kevin Rogers
To achieve this goal, cost reduction through the use of lower cost feedstock and the minimisation of processing steps is essential.
In addition, some data on recent DuPont powder is also presented.
Comparison of Interstitial content, PSD and packing data.
Temperature ( o C) Reduction (%) 96 97 98 99+ 98 99 99+ 97 98 99 99+ Increasing roll speed 99 Figure 5.
The results are compared with quoted data for wrought derived CP Grades 2, 3 and 4 [3].
Online since: October 2013
Authors: Jozef Beňo, Ildikó Maňková
Based on measured forces data and roughness' in hard turning with cubic boron nitride inserts , the ratios of parasitic effects on resultant surface roughness have been determined.
Specific forces per chip cross section/tool edge result from decomposition of measured data in hard turning.
Product kcS characterizes cutting with fresh tool and statistical data processing makes possible to express residuals Fc(r), Ff (r) and Fp(r).
Conclusion Roughness data presented in this paper are consistent with those being presented in [1], i.e.
Statistical data treatment also reveals that parasitic effect at the effective tool edge length ℓcr contributes to the improvement of the resultant surface texture when hard machining.
Online since: May 2013
Authors: M.A. Vysotskaya
It is necessary to note that the designated positive effect was reached at reduction of the content of polymer in a polymeric component.
It leads to reduction of its tensile properties and reduction of an interval of plasticity of PBB.
Comparison of data on elasticity shows that at the maintenance of DST of 2-3 % on weight in the polymeric matrix nanoreinforced of 0,002 % for OUNT, elasticity of PBB reaches the greatest value - more than 90 % at 25°C and more than 80 % at 0°C.
Further reduction of OUNT in the binder doesn't give significant technical result, because of absence of effect from nanoupdating of a polymeric component.
Thus, at the expense of a variation reduction of the content of DST polymer in binder, and also receiving a target product with high indicators of properties becomes the maintenance of components in the nanoreinforced matrix of a polymeric component, possible.
Online since: September 2008
Authors: Masaru Miyayama, Shinya Suzuki, Naoko Sakai
The reduction capacity estimated by integrating the reduction current at the initial cycle was 300 mA h (g-tetratitanate) -1.
The capacity of 300 and 170 mA h g -1 corresponds to the reduction/oxidation of approximately 90% and 50% of Ti, respectively.
The data shown below were taken after fifth cycle.
Figure 4 shows reduction peak current density of the obtained thin film on cyclic voltammograms measured at various sweep rates.
Reduction peak current density of the obtaind thin film on cyclic voltammograms measured at various sweep rates.
Online since: February 2018
Authors: Guo Qiang Li, Fei Fei Sun, Ying Zhi Sun
The stiffness reduction factor equals lateral stiffness of authentic strips divided by lateral stiffness of imaginary ones, which should be gotten through experiments.
It is used to characterize the reduction of lateral stiffness of components compared with ones fixed at both ends and provide reference for subsequent calculation.
It is obvious that the experiment values of yield bearing capacity were very close to the predicted value and we can get the stiffness reduction factor mentioned before.
We can see that the smaller the aspect ratio is, the smaller the stiffness reduction factor will be.
Molch, et al., Identifying damage caused by the 2008 Wenchuan earthquake from VHR remote sensing data, J.
Online since: September 2013
Authors: Tao Tao Fan
a1090864740@qq.com Keywords: graphene , copper , electrical conductivity , hardness Abstract: This paper studies the performance change by adding a certain percentage of graphene and high-temperature reduction graphene to copper powder,which would be sinteringed by  Spark Plasma Sintering (sps)under certain temperature and pressure.
The NO.1 is added with 20mg grapheme while the NO.2 is added with 20mg high-temperature reduction graphene.
Measurement result is shown in figure 4.Data is in table 1.We can calculate that the electrical conductivity of the sample added graphene increased by 4.39% compared with the sample added no graphene.
Online since: December 2012
Authors: Yan Hong Jia, Chang E Dou, Hong Quan Xie
ESED plays an important role in the reduction of earthquake disasters and emergency evacuation to a safe place for resettlement of affected people.
Update Data Management.
Earthquake emergency shelter in the information management is the main data to update and maintain, this is mainly aimed at the earthquake for the department.
Through the update data management, guarantee the data in the database of the dynamic add, delete, modify and real-time update, keep database data processing.
Along, but also to the existing database backup, to prevent data loss; at the same time, but also provides online help, can help users solve in use process possible problems.
Online since: December 2014
Authors: Yu Dong Xu
The following contents are mainly model and data, and cointegration analysis, conclusion and enlightenment.
Employment population statistical data for 1995-2008 are derived from "Compilation of Statistic for The 60th Anniversary of The Foundation of New China"; GDP data are obtained through data conversion according to prices and price indexes for the very years.
In terms of CO2 data, currently there is no monitoring data of CO2 emissions in China, CO2 emissions caused by fossil fuel account for more than 90% of total CO2 emissions,in most literatures, such as Niu Haixia, Hu Jiayu(2011) and so on, CO2 data is converted from data of various energy consumption.
Then, total carbon emissions for each year is divided by GDP in 1995, carbon intensity data is obtained for each year.
FDI and Pollution: A Granger Causality Test Using Panel Data [J].
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