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Online since: February 2012
Authors: Shu Guang Cai, Xiao Yun Ye, Chan Zheng, Xue Qing Xiao
Under the increased experimental power, it is much easy for the reduction of the silver ions to silver nanoparticles, then to reach on the surfaces of silica spheres.
The morphologies of the silver nanoparticles were related to the reduction rate of the silver ions.
Slow reduction rate resulted in uneven shapes[8].
With the silver ion concentration increased, as shown in Fig. 2B, more uniform Ag shells were formed due to the increased reduction rate of silver ions.
As can be seen from the data, no distinct peaks were observed for bare silica owing to the strong scattering from the silica colloid (Fig. 4a) [9].
Online since: February 2014
Authors: Qun Yan, Zong Hong Xie
The time history curve of contact force is obtained and shows a good correlation with the experimental data.
After an impact, a large reduction in the mechanical performance may occur.
Fig. 1 The finite element model used for the analysis Result and discussion The numerical results were compared with the experimental data for model validation purpose.
The time history curves of contact force are obtained and show a good correlation with the experimental data, which validates the finite element model developed.
Online since: July 2011
Authors: Zi Qi Li, Yan Yan Fan
Study on Seismic Response Reduction of a Long-Span Cable-Stayed Bridge by Adding Viscous Dampers at the Different Positions Li ziqi 1,2,a , Fan yanyan1,2, b 1School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou,China 2Key laboratory of road & bridge and underground engineering of Gansu province, Lanzhou Jiaotong University, Lanzhou, 730070, China alzqfyy@163.com, bfyyanl,@163.com Keyword: Long-span bridges, Lifeline engineering, Earthquake, Vibration-isolation seismic, Viscous dampers Abstract: Bridge is an important part of transport system, especially for the long-span bridges of important route.
Table 1: The relevant data for calculation model of three-dimensional finite element Main beams Pillar and beams Stay cables Total units Total nodes Type of unit totality Type of unit totality Type of unit totality 1998 1182 SHELL63 1808 BEAM4 86 LINK10 104 C Study about how the installation position of viscous dampers influences structure of bridge Most quality of the cable-stayed bridge is concentrated in deck the same as the seismic force does, so the seismic inertial force of floor system which is carried by the foundation finally transfers from stay-cables and bearing to tower of bridge and side pier, then to foundation.
The comparative analysis of control effect of vibration absorption in scheme 1 and scheme 2 which are about the installment of damper is shown in Table 2: Table 2: The analytical results of the reduction of shock-isolation in different conditions.
Online since: November 2014
Authors: Li Ding, Li Mao, Xiao Feng Wang
With only 3 classifiers mining traffic data from 3 different aspects, the regularities can be fully digged out.
Process of feature selection The traffic data usually has high dimensions and redundant features.
So the data need to do dimension reduction which means the operation of feature selection.FCBF (Fast Correlation-Based Filter Solution) by reference [5] is a fast and effective method to produce feature subset.
It calculates the feature used to divide the data set to make data purity declines the most.
Experiments and Analysis Data Resource Experimental data is from Moore et.al which contains 377 526 network flows divided into 10 types; each flow consists of 249 features, of which the last feature means the category.
Online since: September 2013
Authors: Hui Min Hao, Lin Feng, Dong Fu, Lin Wei
data[12].
Symbols:experimental data[6].
J Chem Eng Data, 1992, 37: 96-100
Data, 2010, 55 (11), 4580-4585
Data, 2008, 53(11), 2521-2531.
Online since: June 2014
Authors: Yi Shu Kong, Xiu Li Liu
According to the relevant data from Chinese Statistical Yearbook from 1986 to 2013, the wastewater emission in China has reached 68476 million tons in 2012, and it presents an obvious trend of rising from 1985 to 2012 as shown in Fig.1.
This research is based on relative data of national wastewater emission from 1985 to 2012.
Relative data came from: (1986-2013), the National Water Conservancy Statistical Bulletin(2006-2010) and the CEIC database.
It means that compared with Haihe River basin these 39 sectors still have plenty scope to reduce wastewater emission in nationwide, viewed from data in 2002.
We only take the 47 sectors into account in following analysis for these 4 sectors’ wastewater emission data were zero in both 1999 and 2002
Online since: February 2015
Authors: Gokcen Bas, Mehmet Cakmakci, Mahmut Kemal Karasu, Umut Gurel, Numan M. Durakbasa
Quality control activities contain general methods such as accuracy checks on data acquisition and calculations, and the use of approved standardised procedures for emission and removal calculations, measurements, estimating uncertainties, archiving information and reporting.
Quality control activities also include technical reviews of categories, activity data, emission factors, other estimation parameters, and methods [27]. 3.
He used a performance metric called signal-to-noise (S/N) ratio that combines the mean and standard deviation to analyse data from a robust design [17].
Optimization and variation reduction in quality.
[11] Taylor W.A., Optimization and variation reduction on quality, 1991, McGraw Hill, US
Online since: March 2014
Authors: Tong Yu Wu, Philip E. Irving, Fang Ming Zhao, Paul Jackson, David Ayre
Although theoretical studies of coating failure have been reported [8, 9], quantitative experimental data on fatigue of epoxy coatings has not been published.
The data points describe the life of a coating fatigue sample, failure being defined as the point at which the first 2 mm long crack is observed.
Linear regression curves of the data points are also presented.
The data points with an arrow to their right are run out points representing strain amplitudes that caused substrate failure before coating failure was observed.
The cause of the reduction in crack growth rates is still under investigation.
Online since: July 2011
Authors: Zhen Xiang Wei, Li Jie Zhou
Its model is divided into static (only provide a single flexibility estimation) and dynamic (short-term and long-term elasticity estimations) ones, using samples namely time series, cross section data and panel data[7].
And different data and methods lead to different results.
Mayo and Mathis (1988) used data from 1958 to 1984 of the United States to estimate short-term and long-term rebound effect of motor transport at 22% and 26% respectively.
In addition Haaset al (1998) took the cross section data of household heating in Australia to estimate the long-term rebound effect ranging from 15% to 48%.
Researches in China.Subject to data limitations, studies on home heating, cooling and automobile transportation and other fields in China have not been found.
Online since: July 2011
Authors: Jiang Qi Long, Zhong Gen Su
Using electronically controlled EGR technology can precise control EGR rate under the different engine conditions, it is as much as possible reduction of NOx emissions under effectively maintaining the performance requirements of diesel engine.
The control panel has the functions of data collection, determining the conditions, the coordination of the subroutine, controlling signal output.
The data of Table 1 show that NOx emissions total reduces 30.9% subject to diesel engine performance after the use of electronically controlled EGR system.
In contrast, change of EGR rate has obvious effect on the diesel engine performance at high load, the use of big EGR rate brought a significant reduction in NOx, but will bring a rise in particles emissions and the significant increase of the fuel consumption.
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