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Online since: October 2011
Authors: Hai Zhao, You Ning Xu, Duo Jiao Guan
Analysis data show that the addition of Ce improves the reduction performance of Fe-Mn species.
Manganese and Cerium compounds are also effective in selective catalytic reduction with NH3 [3, 4].
Analysis data from XRD, BET, XPS, TPR and TEM have provided the insight into the surface and structure properties of Ce-promoted Fe-Mn oxide catalysts compared with the undoped catalyst.
The peak at 405 ˚C can be related to a process of the reduction of Fe2O3 to Fe3O4, while the other two H2-consumption peaks with the reduction of Fe3O4 and FeO, respectively.
Effect of Ce doping on surface area for Fe–Mn oxide Sapmles BET surface area (m2 /g) Pore volume (cm3/g) Fe-Mn oxide Fe-Mn-Ce oxide 58 64 0.212 0.243 From the listed data, it is deduced that Ce-doping result in the increasing of surface area, pore volume of the Fe-Mn samples.
Online since: January 2010
Authors: V.V. Rybin, G.E. Kodzhaspirov, A.I. Rudskoy
It follows from the obtained data that the hot working with the following accelerate cooling under industrial conditions does not develop a tendency toward corrosion cracking in 3% agueous NaCl solution.
This is confirmed by experimental data for the effect of steel chemical composition and heat-treatment schedules on its tendency toward ICC.
With an increase in dislocation density a tendency is observed toward a reduction in corrosion rate (Table 2).
In contrast to data obtained in [9] for a similar steel given TMP, the grain size and overall amount of carbide phase in this case has almost no effect on ICC.
It follows from data in Table 2 that steel TMP-worked under industrial conditions practically does not develop a tendency toward corrosion cracking in 3% aqueous NaCl solution.
Online since: May 2010
Authors: Stefanus Harjo, Atsushi Moriai, Hiroshi Arima, Jun Abe, Takeshi Nakatani, Kazuya Aizawa, Takayoshi Ito
Data reduction, means histogram creation from event data, is important function before going on analysis.
Data reduction tool.
As an example of manual data reduction, a total of 4 megabyte event data files, which were obtained by 20 minutes measurement of steel specimen, are converted to 0.3 megabyte histogram files by 2 seconds data reduction.
Figure 4(b) shows another example of data reduction type.
Data reduction example.
Online since: July 2014
Authors: Huai En Li, Na Deng
So the quantitative analysis on relation between effectiveness and influencing factors had been conducted based on the plot experiment data in this paper.
So the objectives of this study are: 1) to determine degree of association between influencing factors and removal effect of VFS, 2) to develop the empirical models derived from experimental data for the assessment of sediment trapping efficiency, and 3) to describe the physical interpretation of the parameters that define the model equations for evaluating sediment trapping process.
First, it was necessary to standardize original data, and then computed degree of association between sediments removal effect and influence factors by grey correlation analysis.
Relation of VFS width and purification effect It is the core role to determine the reasonable width of VFS in VFS design, so the relation of width and purification effect in this study had been described by counting experiments data, and it was shown in Fig.1.
Thus the quantitative analysis on relation between purification effect of VFS and influencing factors has been conducted based on the plot experiment data.
Online since: August 2013
Authors: Ping Chuan Zhang, Hai Long Yu, Hai Xia Li
The preprocessing functions include data format conversion, data interpolation, data extraction and data smooth.
The input file requires Bouguer gravity anomaly data files on a plane (unit is mGal).
The calculation results are apparent density data of each depth layer (unit is g/cm3).
Figure 2 The Apparent DensityInversion interface The Techniques and Processes of Software Implementation At first, in the Fortran PowerStation4.0 development environment, with the Fortran90 language we compiled and debugged the calculation programs of the new method, including data format conversion, data interpolation, data interception, data smooth, magnetic △ T anomaly reduction to the pole, potential field continuation, potential field cutting, the apparent density inversion and the apparent magnetic inversion module.
It is suitable for large area of potential field data.
Online since: February 2015
Authors: Victor Sachkov, Alexander S. Bujnovskij, Vladimir L. Sofronov, Alexandra V. Anufrieva
The results of mathematical treatment of experimental data of fluorination of oxides of neodymium and iron have shown that the minimal error under linearization is given by the equation of the contractive surface.
This results in more complete reduction of fluorides, especially that of oxides, as well as better elimination of reduction smelting products.
The occurrence of moisture and volatile impurities (HF, F2, CO2) in iron and REM fluorides in the lining materials results in reduction of metal fall into ingots, quality loss and abrupt increase of pressure in the reactor during the process of reduction smelting.
If the content of the impurities mentioned is greater than 0.15%, fluorides can’t be used for reduction.
Investigation of the stage of magnet production One part of the ingots of reduction smelting alloys was used to produce magnet samples.
Online since: July 2011
Authors: Zhao Cai Wang, Zheng Gen Liu, Shi Qiang Chen, Jue Tang, Xiang Xin Xue, Man Sheng Chu
In addition, oxidized pellets are also dominant burden for pre-reduction shaft furnace of COREX process and direct reduction shaft furnace of HYL and MIDREX process.
Finally, more emphasis are put on studying the effects of B-Mg additive on reduction swelling and the strength after reduction and cooling of the above pellets and making the detailed mechanism analysis.
Table 2 lists out the experiment datas of green balls properties under adding the different amount of B-Mg additive.
Fig. 4 shows the effects of adding B-Mg additive on reduction swelling index (RSI) and the strength of pellets (roasted under 1220 ˚C) after reduction and cooling.
On the other hand, after adding B-Mg additive, the increasing of binding phase amount benefits to overcome the phase-change stress during the reduction, which further decreases the reduction swelling [6].
Online since: August 2013
Authors: Yu Qin Zhu
Experimental Study on Unsupported Nano-MoS2 Catalyst for Deep Desulfurization Fuel Oil Yuqin ZHU School of Chemistry & Chemical Engineering, Xian Shiyou University, Xian, China zhuyq@xsyu.edu.cn Keywords: Unsupported MoS2 Catalyst; Hydrotreating Desulfurization; Hydrothermal Reduction.
Five kinds of unsupported MoS2 hydrodesulfurization catalysts and the precursor of MoS2 catalyst, nano-sized MoO3, were synthesized by a novel hydrothermal reduction method.
Experimental materials and preparation methods Experimental materials By analysis and comparison,the hydrothermal reduction is used to prepare MoO3, the precursor of MoS2 catalyst, and the MoS2 catalyst is synthesized by the hydrothermal deoxidization.
Preparation methods Hydrothermal reduction for the preparation of MoO3 The mixture of sodium molybdate and hydrochloric acid in certain proportion was put into the inner of a reactor and it was heated from the ambient temperature to 150℃ at an appropriate speed.
Handbook of thermochemical data for compounds & aqueous species.
Online since: March 2013
Authors: Wen Hui Ma, Yang Zhou, Xiu Hua Chen, Shao Yuan Li, Ming Yu Ma, Yao Hui Xu, Yong Yin Xiao
However, the pores were gradually visible with the HF concentration reduction.
The data of surface roughness and the main height distribution of the “hill” both showed an increase with the reduction of concentration, from 6.39 nm increase to 16.9 nm and from 30 nm increase to 90 nm, respectively, which implied that the pores were better exposed under the lower HF concentration.
From the Fig2B to 2C, we can find that massive “hill” is visible on the surface of PS, and the height increases with the reduction of HF concentration.
With the concentration reduction, the pores were gradually visible.
The data of surface roughness and the height distribution density of the “hill” both showed increases with the reduction of HF concentration.
Online since: July 2013
Authors: Yu Long Zhang, Yin Shan Wang, Ze Xu Wu
Research of super capacitance in automobile industry Yu long Zhang a, Yin Shan Wang b, Ze Xu Wu c Tianjin University of Technology and Education Automotive and Transportation Tianjin 300222 azyl41132519830@163.com, byinsanwang@yahoo.cn, cwuzexu2007@126.com Keywords: super capacitor; Vehicle power supply; Energy recycling; Hybrid mode; Energy conservation and emission reduction Abstract: this article introduces the current car which is in circumstance of regulations more and more strict and energy increasingly tense, super capacitor car have the significance of realizing energy conservation and emissions reduction.
Focus on the analysis of the super capacitor car in different conditions, energy flow and power distribution process in the hybrid model, which provides theoretical basis for super capacitance car realizing to energy conservation and emissions reduction.
Also in 2009, from skin YouCi trust foundation data of clean energy investment, China is leading the world more than us $18.6 billion to $34.6 billion.
The three way dynamic collaborative orderly job and satisfy car complicated condition needs , achieving energy saving and emission reduction.
Conclusion This article mentioned the severe requirements of car from the energy and the regulations for energy conservation and emissions reduction, countries increase the capital investment in the development of new energy vehicles, This suggests that car with energy conservation and emission reduction have broad prospects.
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