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Online since: January 2013
Authors: Ke Feng Cai, Zhi Gang Zou, Song Chen, Xin Wang
Recently, we developed a novel and simple gas-induced-reduction (GIR) method to synthesize chalcogenide nanostructures [16].
All the XRD peaks can be indexed to the standard data of Bi0.5Sb1.5Te3 (JCPDS card, 449-1713), indicating that pure Bi0.5Sb1.5Te3 powders were prepared.
Compared with the reported data for Bi0.5Sb1.5Te3 bulk materials in literature, the present sample shows low electrical conductivity.
For the oxide phase, Bi4TeO8, as we have not found any related data in literature and we are not sure about its details including its size and existing status in the material, its effect on the transport properties needs to be further studied.
Novel Gas-Induced-Reduction Route to Chalcogenide Nanostructures Taking Sb2Se3 as an Example.
All the XRD peaks can be indexed to the standard data of Bi0.5Sb1.5Te3 (JCPDS card, 449-1713), indicating that pure Bi0.5Sb1.5Te3 powders were prepared.
Compared with the reported data for Bi0.5Sb1.5Te3 bulk materials in literature, the present sample shows low electrical conductivity.
For the oxide phase, Bi4TeO8, as we have not found any related data in literature and we are not sure about its details including its size and existing status in the material, its effect on the transport properties needs to be further studied.
Novel Gas-Induced-Reduction Route to Chalcogenide Nanostructures Taking Sb2Se3 as an Example.
Online since: June 2014
Authors: Khaled A. Alnefaie, Nidal H. Abu-Hamdeh
Measured engine performance parameters have generally showed a slight increase in exhaust gas temperature and in brake specific fuel consumption, and a slight reduction in brake thermal efficiency.
The rate of reduction of diesel fuel is the greatest among gasoline fuels, which subsequently results in the greater price of diesel fuel than other gasoline fuels.
Experiments were performed to study biodiesel from almond oil as a substitute fuel to operate a diesel engine and the performance data were recorded.
The data gathering was made at five engine torques from 4 to 20 N.m at an increment of 4 N.m each time.
The data collected from the experimental tests included brake torque, exhaust and coolant temperatures, emissions from exhaust including carbon monoxide and nitrogen oxides.
The rate of reduction of diesel fuel is the greatest among gasoline fuels, which subsequently results in the greater price of diesel fuel than other gasoline fuels.
Experiments were performed to study biodiesel from almond oil as a substitute fuel to operate a diesel engine and the performance data were recorded.
The data gathering was made at five engine torques from 4 to 20 N.m at an increment of 4 N.m each time.
The data collected from the experimental tests included brake torque, exhaust and coolant temperatures, emissions from exhaust including carbon monoxide and nitrogen oxides.
Online since: September 2025
Authors: Daniel J. Lichtenwalner, Sei Hyung Ryu, Andreas Scholze, Hemant Dixit
In this paper, we present a well calibrated a-face channel mobility model that shows an excellent match with the available experimental data and further provides critical insights into the anisotropic nature of channel mobility in 4H-SiC MOSFET structures.
Thus, here we present a well calibrated a-face channel mobility model that shows an excellent match with the available experimental data and further provides critical insights into the anisotropic nature of channel mobility in 4H-SiC MOSFET structures.
Al. [6] and later significantly revise the proposed semi-empirical formulation to describe experimental data.
An extensive calibration of SR, SP and RCS model terms was performed to match the experimental data for measured a-face channel mobility.
The TCAD results are in excellent agreement with measured data and successfully predict the channel mobility curve along with their temperature dependence.
Thus, here we present a well calibrated a-face channel mobility model that shows an excellent match with the available experimental data and further provides critical insights into the anisotropic nature of channel mobility in 4H-SiC MOSFET structures.
Al. [6] and later significantly revise the proposed semi-empirical formulation to describe experimental data.
An extensive calibration of SR, SP and RCS model terms was performed to match the experimental data for measured a-face channel mobility.
The TCAD results are in excellent agreement with measured data and successfully predict the channel mobility curve along with their temperature dependence.
Splitting Strength Detection Test of Shallow Asphalt Pavement and Master Curve of Splitting Strength
Online since: August 2014
Authors: Teng Long, Mao Cai Zhao, Meng Xu, Hong Sen He
Established a unified and practical test standard for the Strength Detector of Shallow Pavement; At last, analyzed the spot penetrating experiments data of three different types of asphalt pavement in Harbin district.
Back-calculation modulus, which is based on deflection basin data of the Falling Weight Deflectometer (FWD), is able to evaluate the carrying capacity of pavements comprehensively[3, 4, 5].
In order to obtain the function between average penetrating depth and splitting strength, make the compaction times as the intermediate variables, and fit the experimental data, then we Fig.3.
We can see from Fig.3, at 5 different temperatures, splitting strength linearly increases with the reduction of average penetrating depth.
According to the impact penetration test data and the splitting strength master curves of different temperature, we get the seasonal variations of splitting strength at the three different test sites, as shown in Figure 6.
Back-calculation modulus, which is based on deflection basin data of the Falling Weight Deflectometer (FWD), is able to evaluate the carrying capacity of pavements comprehensively[3, 4, 5].
In order to obtain the function between average penetrating depth and splitting strength, make the compaction times as the intermediate variables, and fit the experimental data, then we Fig.3.
We can see from Fig.3, at 5 different temperatures, splitting strength linearly increases with the reduction of average penetrating depth.
According to the impact penetration test data and the splitting strength master curves of different temperature, we get the seasonal variations of splitting strength at the three different test sites, as shown in Figure 6.
Online since: February 2014
Authors: Yu Xie, Xiao Meng Xie, Mian Shui Yu
The PCA method is used for dimensionality reduction of the features to obtain human facial age.
In theory, information fusion is usually divided into three levels: data fusion, feature fusion and decision fusion.
In 1995, Dietterich et al. proposed an extension of two-class classification to multi-class classification using ECOC [16]: for m-class data classification, binary coding with the length of n is implemented for each class to form a mÍn-sized code matrix.
We randomly divide test data of each group into 5 portions, and iteratively use 4 of them as training set and the last as a test set.
The PCA method was used for dimensionality reduction of the features to acquire human facial age features.
In theory, information fusion is usually divided into three levels: data fusion, feature fusion and decision fusion.
In 1995, Dietterich et al. proposed an extension of two-class classification to multi-class classification using ECOC [16]: for m-class data classification, binary coding with the length of n is implemented for each class to form a mÍn-sized code matrix.
We randomly divide test data of each group into 5 portions, and iteratively use 4 of them as training set and the last as a test set.
The PCA method was used for dimensionality reduction of the features to acquire human facial age features.
Online since: September 2013
Authors: Cou Ping Yu, Xu Zhu, Xiao Yan Luo, Pei Huan Fu
The system can complete the measurement data receiving, data processing, curve output, shape and position error calculation, alarm display, such as a series of functions.
Principles and methods of measurement System to the PC as the core, completes the measurement data reception, data analysis and the results of the display.
On the part of the received data, the use of on MCGS own function, can receive data from the next crew sent data, without the need for data conversion, binary data can be directly converted into decimal data; in the data analysis section ,the system will use the previously established good the mathematical model to write programs, which each corresponds to a form of bit error ; in the display section, with MATLAB software mapping function, the received data is used to plot a three-dimensional graphics, and thus the data Analysis results were compared, and the accuracy of the test results was detected, while MCGS configuration software will analyze the results in order to display data in the form of the curve.
For MATLAB software, it can be directly type "load" command in the command window, which calls in the database, thus, the measurement data for data analysis, draw mathematical model.
OPC communication with real-time, rapidly data transfer rate, and simple method, considering the data communications requirements, system selection integrated OPC Toolbox MATLAB and MCGS configuration software to achieve real-time data exchange between the completion data exchange, enabling MCGS configuration software and MATLAB software combination.
Principles and methods of measurement System to the PC as the core, completes the measurement data reception, data analysis and the results of the display.
On the part of the received data, the use of on MCGS own function, can receive data from the next crew sent data, without the need for data conversion, binary data can be directly converted into decimal data; in the data analysis section ,the system will use the previously established good the mathematical model to write programs, which each corresponds to a form of bit error ; in the display section, with MATLAB software mapping function, the received data is used to plot a three-dimensional graphics, and thus the data Analysis results were compared, and the accuracy of the test results was detected, while MCGS configuration software will analyze the results in order to display data in the form of the curve.
For MATLAB software, it can be directly type "load" command in the command window, which calls in the database, thus, the measurement data for data analysis, draw mathematical model.
OPC communication with real-time, rapidly data transfer rate, and simple method, considering the data communications requirements, system selection integrated OPC Toolbox MATLAB and MCGS configuration software to achieve real-time data exchange between the completion data exchange, enabling MCGS configuration software and MATLAB software combination.
Online since: December 2012
Authors: Jia Wen Qiang, Jian Xiang Guo, Zhong Wei Sui, Guo You Gao
The sampling rate of the data is set to 1, which means during the test, one point needs one second to collect.
The collected data will be stored in the excel table.
Controlled differential pressure The measurement data relative error analysis The analysis of data is based on the GB "differential pressure regulating valve in heating system".
in Table 3-1 is part of the data in the test.
The data in Fig 5 shows the relative error of the test data is small enough which maintains at 5% or less.
The collected data will be stored in the excel table.
Controlled differential pressure The measurement data relative error analysis The analysis of data is based on the GB "differential pressure regulating valve in heating system".
in Table 3-1 is part of the data in the test.
The data in Fig 5 shows the relative error of the test data is small enough which maintains at 5% or less.
Online since: May 2012
Authors: Dun Huang, Guang Hua Yang, Jie Yao, Ming Qing Xiao
A finite element model considering the high-speed train excitation loads, track structure, vibration reduction measures, station structure, characteristics of foundation soils was established to study the problem of vibration in the underground Futian hub of Guangzhou-Shenzhen- Hong Kong high-speed rail.
Compared to conventional ballasted track, ballastless track has a relative higher stiffness, thus the vibration and noise is relatively serious[14], vibration reduction measures are always needed.
Combining with the geological data (Table 1), the normal spring coefficient can be determined by this method.
Comprehensive analysis of vibration reduction effect is shown in Table 3.
Conclusions A finite element model considering the high-speed train excitation loads, track structure, vibration reduction measures, station structure, and soils was established to study the vibration in the underground hub.
Compared to conventional ballasted track, ballastless track has a relative higher stiffness, thus the vibration and noise is relatively serious[14], vibration reduction measures are always needed.
Combining with the geological data (Table 1), the normal spring coefficient can be determined by this method.
Comprehensive analysis of vibration reduction effect is shown in Table 3.
Conclusions A finite element model considering the high-speed train excitation loads, track structure, vibration reduction measures, station structure, and soils was established to study the vibration in the underground hub.
Online since: December 2024
Authors: Wanlop Kitisatorn, Pornlada Pongmuksuwan
However, this improvement in mechanical strength is accompanied by a higher compression set, suggesting a potential reduction in sealing efficiency due to diminished elasticity and recovery after deformation.
This reduction in elongation is indicative of a transition from a more flexible material to a stiffer, more brittle one, which is a common trade-off observed in reinforced rubber composites.
The data indicate that the compression set increases with the addition of higher carbon black content.
This reduction in contact pressure may result in micro-gaps forming between the seal and the shaft, allowing for fluid leakage and the potential ingress of contaminants.
The reduction in volume loss with higher carbon black content can be attributed to the reinforcing effect of carbon black, which significantly enhances the wear resistance of the NBR.
This reduction in elongation is indicative of a transition from a more flexible material to a stiffer, more brittle one, which is a common trade-off observed in reinforced rubber composites.
The data indicate that the compression set increases with the addition of higher carbon black content.
This reduction in contact pressure may result in micro-gaps forming between the seal and the shaft, allowing for fluid leakage and the potential ingress of contaminants.
The reduction in volume loss with higher carbon black content can be attributed to the reinforcing effect of carbon black, which significantly enhances the wear resistance of the NBR.
Online since: September 2013
Authors: Ron W. Anthony
The published design values are based on various test data and procedures published by the American Society for Testing and Materials [2] that demonstrate the engineering performance of the material.
Assuming that the condition of the timber is known, any design or structural analysis requires that the engineer or architect rely on published data and standards when conducting an analysis.
Paramount to conducting a proper structural analysis is having an understanding of the material data upon which the engineer or architect relies.
An issue that often arises when discussing historic versus modern test methods and data is the testing of small clear specimens and full-size timbers.
Over time, grading rules were modified as more technical data became available on material properties, and the effects of knots, slope of grain, and other defects on material properties were better understood.
Assuming that the condition of the timber is known, any design or structural analysis requires that the engineer or architect rely on published data and standards when conducting an analysis.
Paramount to conducting a proper structural analysis is having an understanding of the material data upon which the engineer or architect relies.
An issue that often arises when discussing historic versus modern test methods and data is the testing of small clear specimens and full-size timbers.
Over time, grading rules were modified as more technical data became available on material properties, and the effects of knots, slope of grain, and other defects on material properties were better understood.