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Online since: August 2014
Authors: Zheng Hui Zhang, Zhang Long Guo, Li Qiong Huang
Apparent activation energy data obtained from linear regression equation
As it was displayed, the apparent activation energy decreased by 5.6 kJ mol-1 for the catalyst in which the support Al2O3 was precoated by 5 wt% MgO, comparing to that of NA catalyst.
Pore structure and surface area data of different samples It was observed that there were MgAl2O4 spinel species over the MgO precoated catalysts.
X-ray diffraction profiles of catalysts 3.3 Temperature Reduction Analysis (H2-TPR) There were three reduction peaks for all the catalysts according to the TPR profiles of different catalysts.
The reduction peaks should be ascribed to the reduction of different nickel species.
Temperature and the percentage of reduction peak area data obtained from H2-TPR diagrams It was exhibited in Table 3 that the percentage of the peak β increased as the introduction of small amount of MgO, and then decreased when the amount of MgO loading increased while the percentage of high temperature peak was also increased.
Pore structure and surface area data of different samples It was observed that there were MgAl2O4 spinel species over the MgO precoated catalysts.
X-ray diffraction profiles of catalysts 3.3 Temperature Reduction Analysis (H2-TPR) There were three reduction peaks for all the catalysts according to the TPR profiles of different catalysts.
The reduction peaks should be ascribed to the reduction of different nickel species.
Temperature and the percentage of reduction peak area data obtained from H2-TPR diagrams It was exhibited in Table 3 that the percentage of the peak β increased as the introduction of small amount of MgO, and then decreased when the amount of MgO loading increased while the percentage of high temperature peak was also increased.
Online since: May 2012
Authors: Ya Dong Guo, Cui Ting Fu, Guo Rong Liu, Chun Shuang Liu
The results indicated that this model built on the BPNN theory was well-fitted to the detected data, and was able to simulate and predict the removal of COD and berberine by UASB reactor.
The VFA concentration in effluent, biogas and methane content was detected during this experiment (data not given).
Fig.6 Topological architecture of the BPNN model The model program selected the data of 101-141 day of the UASB system as training values and was subsequently simulated by using independent data sets between day 142 and day 191.
Fig.7 Comparison of COD simulated results Fig.8 Comparison of berberine simulated results with real data and the error chat with real data and the error chat Overall, ignoring the larger number of outliers caused by several errors, these models were well fitted the real data in terms of reactors effluent COD and berberine.
At that model 30 representative groups of data were selected for training and 14 groups were for forecasting, 1.89–19.23% errors were obtained eventually [16].
The VFA concentration in effluent, biogas and methane content was detected during this experiment (data not given).
Fig.6 Topological architecture of the BPNN model The model program selected the data of 101-141 day of the UASB system as training values and was subsequently simulated by using independent data sets between day 142 and day 191.
Fig.7 Comparison of COD simulated results Fig.8 Comparison of berberine simulated results with real data and the error chat with real data and the error chat Overall, ignoring the larger number of outliers caused by several errors, these models were well fitted the real data in terms of reactors effluent COD and berberine.
At that model 30 representative groups of data were selected for training and 14 groups were for forecasting, 1.89–19.23% errors were obtained eventually [16].
Online since: May 2011
Authors: Liang Hua Feng, Kun Liu, Miao Yong Zhu
Comparing practical result with that calculated by mathematical model, it shows that modified model can simulate the heat transfer and solidification process, which can provide accurate end solidification spot and serve for soft reduction.
A right mathematical model of heat transfer on solidification can be used to calculate surface temperature and thickness of slab, as well as providing useful data for solidification-control and optimizing the secondary cooling technology.
In this paper, mathematical solidification model has been established based on a practical continuous caster, where heat transfer coefficient is modified by experimental shell thickness data.
This model can be used to calculate solidification end at different drawing speed, which can provide right position for soft reduction.
Conclusions 1.Solidify shell thickness tested by the method of nail-shooting can reflect the solidification of casting slab truly. 2.Nail-shooting method is an easy, reliable and very applicable method, the tested result is the most important reference for practical production and establishment of heat transfer mathematical model of casting slab. 3.Revised mathematical can simulated the phenomena of heat transfer and solidification, can be used to forecast the shell thickness and the end of solidification at different drawing speed, provide reliable base for optimizing secondary cooling water and controlling soft reduction position.
A right mathematical model of heat transfer on solidification can be used to calculate surface temperature and thickness of slab, as well as providing useful data for solidification-control and optimizing the secondary cooling technology.
In this paper, mathematical solidification model has been established based on a practical continuous caster, where heat transfer coefficient is modified by experimental shell thickness data.
This model can be used to calculate solidification end at different drawing speed, which can provide right position for soft reduction.
Conclusions 1.Solidify shell thickness tested by the method of nail-shooting can reflect the solidification of casting slab truly. 2.Nail-shooting method is an easy, reliable and very applicable method, the tested result is the most important reference for practical production and establishment of heat transfer mathematical model of casting slab. 3.Revised mathematical can simulated the phenomena of heat transfer and solidification, can be used to forecast the shell thickness and the end of solidification at different drawing speed, provide reliable base for optimizing secondary cooling water and controlling soft reduction position.
Online since: November 2019
Authors: Deepak Deepak, S.R. Jayaram, T.P. Jeevan
Lubricants have a very crucial role in machinery industry for friction reduction and wear reduction between two relatively moving parts.
The advancement bio-fuels will lead to huge impact on reduction of CO2 emissions that directly play a role in global warming.
Natural oils with COF and wear volume data [1] Natural Oil COF Wear Volume Avocado 0.0201 0.1037 Olive 0.0778 0.1753 Canola (Rapeseed) 0.0868 0.2009 Peanut 0.0975 0.1682 Sesame 0.3184 0.2151 Soybean Vegetable 0.4059 0.3839 Corn 0.4454 0.2965 Safflower 0.4936 0.1948 Fig 2.
· Chemically modification of natural oils such as trans-esterification of jatropha methyl ester and trimethylolpropane shows improved performances in wear reduction and friction [4]
· Also, the contamination of commercial mineral oil with natural oils, like Jatropha, gives optimum result in anti-wear and friction reduction [18, 19] References [1] Reeves CJ, Menezes PL, Jen TC, Lovell MR.
The advancement bio-fuels will lead to huge impact on reduction of CO2 emissions that directly play a role in global warming.
Natural oils with COF and wear volume data [1] Natural Oil COF Wear Volume Avocado 0.0201 0.1037 Olive 0.0778 0.1753 Canola (Rapeseed) 0.0868 0.2009 Peanut 0.0975 0.1682 Sesame 0.3184 0.2151 Soybean Vegetable 0.4059 0.3839 Corn 0.4454 0.2965 Safflower 0.4936 0.1948 Fig 2.
· Chemically modification of natural oils such as trans-esterification of jatropha methyl ester and trimethylolpropane shows improved performances in wear reduction and friction [4]
· Also, the contamination of commercial mineral oil with natural oils, like Jatropha, gives optimum result in anti-wear and friction reduction [18, 19] References [1] Reeves CJ, Menezes PL, Jen TC, Lovell MR.
Online since: December 2012
Authors: Li Zhang, Yan Miao Ma, Yuan Yuan Zhang
The simulation results show that the low-frequency noise radiation near the end of the piston-cylinder is directional and stronger than that of the other side, which offers a valuable reference for noise reduction.
This paper provides an effective research method for the semi-hermetic reciprocating compressor’s noise reduction Introduction In recent years, with the fast development of agriculture, fisheries and logistics efficiency, higher requirements on the food market have been put forward.
It provides a new research method for studying the semi-hermetic refrigeration compressor noise problem, and a reasonable reference for selecting reasonable sound absorption materials for further noise reduction.
Once these data are known, it’s possible to calculate the structural displacement response and the node pressure, speed and strength in the sound field.
This makes the noise reduction measures more targeted.
This paper provides an effective research method for the semi-hermetic reciprocating compressor’s noise reduction Introduction In recent years, with the fast development of agriculture, fisheries and logistics efficiency, higher requirements on the food market have been put forward.
It provides a new research method for studying the semi-hermetic refrigeration compressor noise problem, and a reasonable reference for selecting reasonable sound absorption materials for further noise reduction.
Once these data are known, it’s possible to calculate the structural displacement response and the node pressure, speed and strength in the sound field.
This makes the noise reduction measures more targeted.
Online since: January 2009
Authors: Yu Hua Pang, Jia Wei Yuan, Qi Sun, Yang Lei Hu
Basic clad sheet from different ply Al1060/Al3003 sheets was obtained with an
initial rolling reduction of 44% at 450°C followed by annealing at 300°C, then ACR was with
reduction of 50% at 550°C from STS304 on each side.
Basic clad sheets from different ply of Al1060/Al3003 were obtained with an initial rolling reduction of 44.4% at 450°C followed by annealing at 300°C (step 1), then ACR was done with reduction of 50% at 550°C from STS304 on each side(step 2).
In the tension test, a Universal Materials testing Machine (WDW-100D) was used and data were obtained from three samples for the same condition.
Basic clad sheets from 18 ply Al1060/Al3003 sheets was obtained with an initial rolling reduction of 44% at 450°C followed by annealing at 300°C, then 20 ply clad sheet was ACR with reduction of 50% at 550°C from STS304 on each side. 3.
Basic clad sheets from different ply of Al1060/Al3003 were obtained with an initial rolling reduction of 44.4% at 450°C followed by annealing at 300°C (step 1), then ACR was done with reduction of 50% at 550°C from STS304 on each side(step 2).
In the tension test, a Universal Materials testing Machine (WDW-100D) was used and data were obtained from three samples for the same condition.
Basic clad sheets from 18 ply Al1060/Al3003 sheets was obtained with an initial rolling reduction of 44% at 450°C followed by annealing at 300°C, then 20 ply clad sheet was ACR with reduction of 50% at 550°C from STS304 on each side. 3.
Online since: July 2013
Authors: Zhi Yong Wu, Hong Mei Chen, Xiu Hui Qi
Its specific steps are as follows:
(1) Data dimensionless processing [6, 7]
Financial data are collected from Website of Sina Finance.
In this paper, the SAV Genetic Reduce (Genetic algorithm.) is used to execute attribute reduction in the collected data based on the ROSETTA software.
Table 2 Standardized sample data No.
Jian, Method on Data Element Standardization (5)—Standardization Stages of Data Element, Information Technology & Standardization. (6)(2008)53-55
Financial data are collected from Website of Sina Finance.
In this paper, the SAV Genetic Reduce (Genetic algorithm.) is used to execute attribute reduction in the collected data based on the ROSETTA software.
Table 2 Standardized sample data No.
Jian, Method on Data Element Standardization (5)—Standardization Stages of Data Element, Information Technology & Standardization. (6)(2008)53-55
Online since: December 2012
Authors: Xiao Long Wang, De Tao Lv, Wen Long Liu, Xiao Ping Zhao, Bao Guo Xu
Redundant data in a multi-station after the data registration was given a complete point cloud models, but also generates a large number of overlapping data.
· Data reduction.
Not only can remove redundant data reduction point cloud, you can also make the data homogenization, to avoid sparse point cloud model from the surface damage.
· Data to fill a vacancy.
Fill hole with a few data points command patch, you can use to increase the added point cloud point cloud data.
· Data reduction.
Not only can remove redundant data reduction point cloud, you can also make the data homogenization, to avoid sparse point cloud model from the surface damage.
· Data to fill a vacancy.
Fill hole with a few data points command patch, you can use to increase the added point cloud point cloud data.
Online since: July 2006
Authors: Halina Garbacz, Wacław Pachla, Tadeusz Wierzchoń, Krzysztof Jan Kurzydlowski
The reduction of grain size to nanostructure in titanium rods requires multistage extrusion with low
reduction rates.
Diameter of the specimens φ[mm] Cross-section reduction True strain φ12 → φ7,5 2,56 0,94 Table 1.
The calculated data also shows that HE process mainly resulted in an increase in the Sm parameter.
However, the technological data describing the process of hydrostatic extrusion are difficult to interpret.
This is because higher reductions in one hydroextrusion pass are possible.
Diameter of the specimens φ[mm] Cross-section reduction True strain φ12 → φ7,5 2,56 0,94 Table 1.
The calculated data also shows that HE process mainly resulted in an increase in the Sm parameter.
However, the technological data describing the process of hydrostatic extrusion are difficult to interpret.
This is because higher reductions in one hydroextrusion pass are possible.
Online since: July 2012
Authors: Zhi Chao Chen, Ping Li, Sheng Qiang Song, Zheng Liang Xue, Wei Xiang Wang, Gong Liang Wang, Rui Ning Liu
Vanadium and its low valence oxides can be obtained through the stepwise reduction of V2O5–VO2–V2O3–VO–V.
So, the volatilization of V2O5 could be depressed better during the reduction process by FeSi.
When the mass ratio of FeSi to V2O5 was 1:1, the relations of V2O5 volatilization loss and reduction temperature were also shown in Fig.1.
When the CaO addition agent was increasing to 36.5%, the V2O5 volatilization rate was 2.1% and the reduction products were 2CaO·V2O5 only.
Beijing: The metallurgical industry press, 2007 (In Chinese) [8] Yingjiao Liang, Yinchang Che: Thermodynamics Data Book of Inorganic Compound.
So, the volatilization of V2O5 could be depressed better during the reduction process by FeSi.
When the mass ratio of FeSi to V2O5 was 1:1, the relations of V2O5 volatilization loss and reduction temperature were also shown in Fig.1.
When the CaO addition agent was increasing to 36.5%, the V2O5 volatilization rate was 2.1% and the reduction products were 2CaO·V2O5 only.
Beijing: The metallurgical industry press, 2007 (In Chinese) [8] Yingjiao Liang, Yinchang Che: Thermodynamics Data Book of Inorganic Compound.