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Online since: October 2011
Authors: Shao Wei Liu, Dong Yan, Zhi Hua Liu, Jian Tang
Spectral data such as near-infrared spectrum and frequency spectrum can simply the modeling of the difficulty-to-measured parameters.
The latent variables space based feature extraction can successfully complete the dimension reduction and feature extraction of the spectral data.
Spectral data can simply the modeling.
The near-infrared spectral data come from http://www.ucl.ac.be, in which the data for learning and test are 150*700 and 68*700 respectively.
This approach can also be used to modeling high dimensional Radar and photometric data.
The latent variables space based feature extraction can successfully complete the dimension reduction and feature extraction of the spectral data.
Spectral data can simply the modeling.
The near-infrared spectral data come from http://www.ucl.ac.be, in which the data for learning and test are 150*700 and 68*700 respectively.
This approach can also be used to modeling high dimensional Radar and photometric data.
Online since: July 2017
Authors: Ahmad Kusumaatmaja, Iman Santoso, Kuwat Triyana, Haris Suhendar
From UV-Vis spectroscopy we observe that the absorbance of rGO decreased as increasing the reduction temperature because the higher reduction temperature yields a high degree of rGO defect.
One of the molecules that can be used as reduction agent is hydrazine [12], in which the temperature FOR the reduction takes place is becoming one of the important parameters to obtain reduced graphene oxide with high quality.
By using UV-Vis absorbances data, we could calculate optical constant (refractive index real and imaginary part) of rGO by using a number of Maxwell equation and Kramers-Kronig relation.
Then we have compared the calculation result with other data which have done by other people with other methods.
Increasing the reduction temperature will decrease the CO bonding in rGO plane [15].
One of the molecules that can be used as reduction agent is hydrazine [12], in which the temperature FOR the reduction takes place is becoming one of the important parameters to obtain reduced graphene oxide with high quality.
By using UV-Vis absorbances data, we could calculate optical constant (refractive index real and imaginary part) of rGO by using a number of Maxwell equation and Kramers-Kronig relation.
Then we have compared the calculation result with other data which have done by other people with other methods.
Increasing the reduction temperature will decrease the CO bonding in rGO plane [15].
Online since: February 2011
Authors: Xiao Mei Pan, Li Li Ren
Synergetic Effects between Al2O3 and HZSM-5 for NO Reduction by CH4
Lili Ren* and Xiaomei Pan
School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
*Email: liliren@seu.edu.cn
Keywords: Al2O3, HZSM-5, synergetic effect, NOx, selective catalytic reduction
Abstract.
Combining with the data of Fig. 1 and Fig. 2, we can conclude that the addition of Al2O3 can improve the selectivity of methane for NO reduction.
In order to promote the reduction NO to N2 by CH4, a certain ratio of NO2/(NO+NO2) must be kept.
But for HZSM-5, it is not only active for NO oxidation, but also active for the reduction of NO2 to NO[10].
Reduction of NO2 to N2 takes place over the proton sites of the zeolite.
Combining with the data of Fig. 1 and Fig. 2, we can conclude that the addition of Al2O3 can improve the selectivity of methane for NO reduction.
In order to promote the reduction NO to N2 by CH4, a certain ratio of NO2/(NO+NO2) must be kept.
But for HZSM-5, it is not only active for NO oxidation, but also active for the reduction of NO2 to NO[10].
Reduction of NO2 to N2 takes place over the proton sites of the zeolite.
Online since: August 2013
Authors: Shuang Zhang, Shi Xiong Zhang
Unfortunately, in data management scenarios today it is rarely the case that all the data can be fit nicely into a conventional relational DBMS, or into any other single data model or system.
Most data management scenarios today rarely have a situation in which all the data can be not nicely into a conventional relational DBMS, or into any other single data model or system.
Unfortunately, in data management scenarios today it is rarely the case that all the data can be fit nicely into a conventional relational DBMS, or into any other single data model or system.
The data space is a collection of data[2] which is associated with the main body and its relationship to the body, all of the data in the data space can be controlled.
Therefore according to uncertain data, lots of data model and data management system are proposed such as TRIO, MayBMS and MystiQ and so on.
Most data management scenarios today rarely have a situation in which all the data can be not nicely into a conventional relational DBMS, or into any other single data model or system.
Unfortunately, in data management scenarios today it is rarely the case that all the data can be fit nicely into a conventional relational DBMS, or into any other single data model or system.
The data space is a collection of data[2] which is associated with the main body and its relationship to the body, all of the data in the data space can be controlled.
Therefore according to uncertain data, lots of data model and data management system are proposed such as TRIO, MayBMS and MystiQ and so on.
Online since: September 2013
Authors: H.H. Masjuki, M.A. Kalam, B.M. Masum, S.M. Palash
The BOSCH BEA-350 exhaust gas analyzer was used to record the data of all exhaust gas emissions.
Test data were generated under full throttle position for different engine speeds (1000, 1500, 2000, 2500, 3000, 3500 and 4000 rpm).
The reason for the reduction of engine power and increase in BSFC are possibly due to slight reduction of cylinder pressure as well as lower heating value of biodiesel.
Impacts of biodiesel combustion on NOx emissions and their reduction approaches.
NOx reduction from biodiesel fuels.
Test data were generated under full throttle position for different engine speeds (1000, 1500, 2000, 2500, 3000, 3500 and 4000 rpm).
The reason for the reduction of engine power and increase in BSFC are possibly due to slight reduction of cylinder pressure as well as lower heating value of biodiesel.
Impacts of biodiesel combustion on NOx emissions and their reduction approaches.
NOx reduction from biodiesel fuels.
Online since: August 2014
Authors: Xing Jun Hu, Jing Yu Wang, Bao Yu Wang, Lei Liao
The conclusions provide theoretical reference for the further study of aerodynamic drag reduction of complex underground.
In this paper, studies are focused on a real SUV vehicle model, and the drag reduction research on complex underbody was conducted to provide certain theoretical reference to the research on SUV drag reduction.
Firstly, point cloud data of the model were achieved with ATOS scanning and then reverse processed to obtain the full-scale geometric model, which is shown in Figure 1 and figure 2.
The difference between an average of the seven sets of test data and calculation results was only 1.1%, which verified the accuracy of numerical simulation results.
Flow rate increasing and lift force reducing led to the reduction of the induced drag caused by lift force, which was the root cause of the reduce of aerodynamic drag.
In this paper, studies are focused on a real SUV vehicle model, and the drag reduction research on complex underbody was conducted to provide certain theoretical reference to the research on SUV drag reduction.
Firstly, point cloud data of the model were achieved with ATOS scanning and then reverse processed to obtain the full-scale geometric model, which is shown in Figure 1 and figure 2.
The difference between an average of the seven sets of test data and calculation results was only 1.1%, which verified the accuracy of numerical simulation results.
Flow rate increasing and lift force reducing led to the reduction of the induced drag caused by lift force, which was the root cause of the reduce of aerodynamic drag.
Online since: December 2012
Authors: Emad A. Badawi, M.A. Abdel-Rahman, Ahmed G. Attallah, M. Elsayed, A.A. Ibrahim
Data are analyzed using the PATFIT88 computer program.
1.
An useful approach is to present experimental data in term of S-W plot which allow to draw some conclusions about evolution of defects participating in positron trapping, [18].
The data for the lifetime spectra was analyzed by using the PATFIT88 computer program [22].
As shown in figures 4 and 5, the defect density and dislocation density increase linearly with increasing thickness reduction, while their increase is slow in the range from 0% to 10% thickness reduction and it is fast up to 40% thickness reduction.
Figure 7 The trapping efficiency as a function of thickness reduction of 5251 Al alloy From the above figure, the variation of the trapping efficiency increases with the thickness reduction in the range from 0% to 7.4% thickness reduction and the variation becomes constant up to 14% thickness reduction.
An useful approach is to present experimental data in term of S-W plot which allow to draw some conclusions about evolution of defects participating in positron trapping, [18].
The data for the lifetime spectra was analyzed by using the PATFIT88 computer program [22].
As shown in figures 4 and 5, the defect density and dislocation density increase linearly with increasing thickness reduction, while their increase is slow in the range from 0% to 10% thickness reduction and it is fast up to 40% thickness reduction.
Figure 7 The trapping efficiency as a function of thickness reduction of 5251 Al alloy From the above figure, the variation of the trapping efficiency increases with the thickness reduction in the range from 0% to 7.4% thickness reduction and the variation becomes constant up to 14% thickness reduction.
Online since: July 2012
Authors: Ya Xin Su, Cui Wu Chen
Experimental data from published literature was adopted to validate the present models.
The experimental data was from Ref. [6].
The NO formation could reasonably agree with the test data when the NO full mechanism was used.
However, if the reburning mechanism was not considered in the simulation, the calculated NO was much more than the experimental data.
The numerical results were a little smaller than experimental data.
The experimental data was from Ref. [6].
The NO formation could reasonably agree with the test data when the NO full mechanism was used.
However, if the reburning mechanism was not considered in the simulation, the calculated NO was much more than the experimental data.
The numerical results were a little smaller than experimental data.
Online since: October 2007
Authors: Jin Hong Li, Hong Wen Ma, Ying Cao
Preparation and Characterization of ββββ-sialon Ceramics from High
Aluminium Fly Ash via Carbothermal Reduction-nitridation
Jinhong Li *, Hongwen Ma, Ying Cao
National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, China
* Corresponding Email: jinhong@cugb.edu.cn (Dr.
Li) Keywords: β-Sialon, High Aluminium Fly Ash, Carbothermal Reduction-Nitridation Abstract.
In this work, β-sialon ceramics were prepared from high-aluminium fly ash via carbothermal reduction-nitridation (CRN) and the physicochemical properties of the materials such as bulk density, apparent porosity, water absorption and flexural strength were also discussed.
Combined with XRD analysis, the crystalline phase consists of SiC and AlN or AlN polytopoids. 21 Conclusion In summary, β-sialon was produced from alumina-rich fly ash at the temperature above 1400°C via carbothermal reduction-nitridation process.
[4] The statistical data comes from http://www.chinatalents.gov.cn/xmtj/detail.aspx?
Li) Keywords: β-Sialon, High Aluminium Fly Ash, Carbothermal Reduction-Nitridation Abstract.
In this work, β-sialon ceramics were prepared from high-aluminium fly ash via carbothermal reduction-nitridation (CRN) and the physicochemical properties of the materials such as bulk density, apparent porosity, water absorption and flexural strength were also discussed.
Combined with XRD analysis, the crystalline phase consists of SiC and AlN or AlN polytopoids. 21 Conclusion In summary, β-sialon was produced from alumina-rich fly ash at the temperature above 1400°C via carbothermal reduction-nitridation process.
[4] The statistical data comes from http://www.chinatalents.gov.cn/xmtj/detail.aspx?
Online since: April 2019
Authors: Lawrence C. Edomwonyi-Otu
In the present work, new data for transitional and turbulent flows and for different types of polymers and concentration are presented.
The Insight 3G software (TSI) was used for data acquisition and generation of the velocity vectors while the data analysis was done using a MatLab code developed in-house.
Reduction of the diameter of the polymer injection point.
Edomwonyi-Otu, “Drag Reduction in Oil-Water Flows,” PhD Thesis.
Gyr, “Heterogeneous drag reduction concepts and consequences,” J.
The Insight 3G software (TSI) was used for data acquisition and generation of the velocity vectors while the data analysis was done using a MatLab code developed in-house.
Reduction of the diameter of the polymer injection point.
Edomwonyi-Otu, “Drag Reduction in Oil-Water Flows,” PhD Thesis.
Gyr, “Heterogeneous drag reduction concepts and consequences,” J.