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Online since: November 2011
Authors: Zhi Fang Tong, Sen Lin Xie, Li Heng Zhang, Gui Huan An, Tao Chen, Wei Liu
The results provide the scientific basis for using the low A/S calcium aluminate slag obtained from smelting reduction Pingguo red mud producting alumina.
The comprehensive utilization of Pinggou red mud containing high iron can be achieved through the following process: firstly recovery of iron by smelting reduction method, then recovery of aluminum by leaching the calcium aluminate slag obtained in smelting reduction process , and finally recovery of the other elements enriched in the leaching residue.
Then compared with experimental results, in order to provide a scientific basis for alumina production using the low A/S ratio of calcium aluminate slag obtained by smelting reduction of red mud.
In the isothermal and isobaric conditions, the calculation using multi-phase equilibrium calculation program “Equilib” based on the Gibbs free energy minimization. 100g of slag is taken as the basis of calculation, the initial temperature is 1600 ˚C, the pressure is 1atm, and original input data include CaO, SiO2 and Al2O3.
The datums indicate that C12A7 easily dissolves in the sodium carbonate solution, CA has certain solubility, next is C3A, and C2AS is difficult to dissolve.
Online since: October 2014
Authors: Feng Hu, Chuan Tong Wang, Yu Chuan Wu, Liang Zhi Fan
The theoretical argument is supported by experimental results from synthetic and real data sets.
Introduction It is difficult to apply high dimensional data directly to classification algorithms because of the so-called dimensionality curse [1].
The embedding results of each high-dimensional data point are shown in Fig. 1(b), the projections of the high dimensional data, and are, and, respectively, in the low dimensional space.
Related works Locally linear embedding The LLE algorithm assumes that each data point is represented as a weighted linear combination of its neighbors.
The effectiveness of the proposed criterion has been experimentally confirmed by its outstanding performance on a series of benchmark data sets.
Online since: November 2012
Authors: Tie Yun Li
In order to ensure the accuracy of the data analysis, the different forms of contain Mercury samples method research and analysis, acquired the production data of the system and make check set the options laid a foundation.
Considering the 100000 t/a PVC device has been put into production more than 2 years, in the short term to find PVC device mercury balance, get a complete and credible data have great difficulty.
In the process of the flow of mercury art investigation and inspection, contain mercury wastewater treatment of device check, operation data detection, a total of 12 has more than 700 data.
Prison the data show that the production environment atmosphere within the device testing results is low, far lower than the harmful factors workplace occupational exposure limits part 1 chemical harmful factors "(GBZ 2.1) limit.
Shall check In the preliminary check for process, according to the monitoring data of continuous adjustable the whole scheme, respectively, aiming to take common key monitoring, sustained attention and so on way.
Online since: May 2020
Authors: Aleksey N. Shapovalov, Roman R. Dema, Sergey P. Nefed'ev
A statistical analysis of St 37-3 steel de-oxidation data was performed with the aim of improving the efficiency of steel de-oxidation technology in a ladle.
The averaged production data for the production of steel St 37-3 are presented in Table 1.
The quantitative effect of metal temperature on the assimilation of deoxidizing agents can be estimated from the data in Fig. 2.
From the data presented in Figure 2, it follows that an increase in metal overheating impairs the assimilation of silicon and manganese at any level of metal oxidation.
The data in Figure 2 confirm the earlier conclusions about the adverse effect of metal oxidation on the efficiency of deoxidation.
Online since: October 2014
Authors: Wan Mohd Sufian Wan Husain
MALAYSIA sufian@miat.unikl.edu.my Keywords: aircraft maintenance, historical data, maintainability allocation, maintainability prediction Abstract.
This research attempts to utilise the aircraft maintenance historical data and information (i.e. feedback information systems).
There is no doubt that historical data information has the ability to contribute an important role in design activities.
The values of failure rate are collected by using a Non-electronic Part Reliability Data (NPRD) data set [2].
However, to be more accurate, the task time should come from the historical data or records.
Online since: October 2013
Authors: Li Jun Xie, He Sheng Tang, Song Tao Xue
In reality, the situation where the experimental data are limited and still need to study the probability characteristic of the fatigue lifetime is regularly encountered.
The prognosis uses fracture mechanics-based fatigue crack growth modeling, along with quantification of various sources of uncertainty, including natural variability, data uncertainty.
According to the experimental data in [14], the interval bounds on Paris parameters (a logarithm to base 10) and are and .respectively.
This section uses the 7th-order SC method to analyze the probability characteristics of fatigue life of a damaged plate in case of limited experimental data ([14]).
An example based on limited experimental data is used to demonstrate the effectiveness of the proposed approach.
Online since: March 2006
Authors: An Jie Wang, Dong Pyo Kim, Jia Yan
Aqueous AgNO3 was infiltrated into the carbon template and reduced to Ag by borohydride reduction reaction, followed by burning of the sacrificial template in air at 500~650ºC.
Berquier et al. synthesized Ag nanoparticles within mesoporous silica film by a chemical route which included ion-exchange with Ag(NH3)2+ followed by reduction process [2].
In our study, Ag metallic sponge with a surface area of 12 m 2/g was synthesized by infiltrating AgNO3 solution into macroporous carbon template, followed by room temperature reduction with NaBH4 and removal of the template at 500~650ºC in air.
The XRD data show reflections at 2.37, 2.04, 1.44, 1.23 and 1.18 ‡ corresponding to the (111), (200), (220), (311) and (222) d spacings, respectively, of metallic silver with a face-centered-cubic unit cell structure [7].
Summary The silver metallic sponges with surface area of 12 m 2/g have been synthesized by depositing Ag nanoparticles on the inner surface of macroporous carbon template, via room temperature reduction step with borohydride.
Online since: October 2012
Authors: Ya Ou, Ao Zhou Wan, Yan Liang, Xiao Yong Luo
The calculating formula of reduction coefficient of bonding strength and slip ratio is proposed.
Assume is the reduction coefficient of the ultimate bond strength, which is the ratio of the trial values of the ultimate bond strength and the corresponding strength of the components that aren’t corroded.
Through the regression analysis of the experimental data, can be calculated from Eq.1
(5) Where is the constitutive relation of bond-slip of uncorroded reinforcement, is the constitutive relation of bond-slip of corroded reinforcement, is the reduction coefficient of bond strength, which can be substituted by , is the position function which is proposed by Xu Youling, in Reference [7-8], , is slip ratio, which can be substituted by .
The slippage should consider the reduction factor of the corroded reinforcement, which is the influence of slip ratio .
Online since: September 2013
Authors: Peng Wang, Bei Bei Cheng, Dai Qing Zhao
The model projects consistent and quantitative socio-economic variables, energy demand, GHG emission and diffusion of mitigation options in order to achieve an emission target or assess the potential of emission reduction by various counter measures.
In 2011, China government issued the "12th Five-Year" program about greenhouse gas emissions reduction, the target of carbon intensity of Guangdong Province decreased by 19.5% compared with 2010 year during the 12th Five-Year.
(a) (b) Fig.1 Primary energy consumption For the final energy consumption data of 2005-2010 , we can see that: Terminal energy consumption from 2005 to 2010 increased year by year; Oil consumption ratio increased from 26% to 29%; Gas including LPG and NG, its proportion increased from 4% to 7%; Power consumption between 35% and 33%; Other energy including other petroleum products , refinery dry gas and coke products, proportion are in 11% between 13%; The proportion of oil consumption has been greater than the proportion of coal consumption.
Fig. 6 CO2 emissions by sector Conclusion 1 ) Application energy model of Guangzhou energy situation and development situation of carbon emissions are simulated and analyzed, the model of situational analysis and reduction measures of impact analysis can be use for decision maker. 2) The energy structure adjustment and technology efficiency improvement are the two key method to reduce carbon emissions. 3) Through the scenario analysis, we can see that Guangzhou has realized this urgent situation .For constructing low carbon economy, not only to further strengthen the energy structure, industrial structure adjustment, climate change and improve energy efficiency technology application, but also should further control population and economic growth.
[8] Detlef P.vanVuuren,MoniqueHoogwijk.Comparison of top-down and bottom-up estimates of sectoral and regional greenhouse gas emission reduction potentials.
Online since: October 2015
Authors: Tamara Kharlamova, Ekaterina Sushchenko
In the case of VOx/AlC, the simple analysis of textural data is not possible due to carbon burning during the thermal treatment of the sample.
According to the data of thermal analysis (not shown), the support calcination in air to up to 700 °C results in 40% mass loss due to carbon oxidation, which is accompanied by reduction of support specific surface area from 460 to 196 m2/g and increase of its pore volume from 0.290 to 0.341 cm3/g.
According to XRD data, VOx/Al2O3 and VOx/SiO2 samples are composed of phases of the support (γ-Al2O3, amorphous SiO2) and orthorhombic V2O5.
Bands typical for crystalline V2O5 are not identified in the Raman spectrum of VOx/TiO2 [5, 6], which is in accordance with XRD data.
The latter corresponds to LTCT band of V5+ in the crystalline V2O5 [6], which is in accordance with XRD and Raman data.
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