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Online since: July 2011
Authors: Zhi Peng Xie, Feng Jiao Xiong, De Bi Zhou
This study demonstrated that, as the SSA was added into the Ce3+/Ce4+ electrolyte, an increase in peak current was observed for the oxidation and reduction, when a cyclic voltammogram was taken on a platinum electrode; at the same time, a decrease in peak potential difference was also observed.
However, the distinct anodic peak could not be observed for the oxidation of SSA at this potential range; furthermore, the voltammetry of SSA lacks the return peak for the reduction of oxidized SSA between 1.2 and 1.4 V vs.
So it can be concluded that the increase in peak current for the oxidation and reduction of Ce3+/Ce4+ redox couple in the presence of SSA is not caused by the oxidation and reduction of SSA.
Table 1: Cathodic and anodic peak current and peak potential obtained from Fig. 1 Additive Peak current [mA] Ipc/Ipa Peak potential [mV] Anodic Ipa Cathodic Ipc Anodic Cathodic Separation No 1.742 1.403 0.81 1363 1240 123 SSA 2.300 2.037 0.89 1337 1240 97 Some data obtained from Fig. 1 are summarized in Table 1.
The comparison of our value in sulfuric acid media with literature data is good.
However, the distinct anodic peak could not be observed for the oxidation of SSA at this potential range; furthermore, the voltammetry of SSA lacks the return peak for the reduction of oxidized SSA between 1.2 and 1.4 V vs.
So it can be concluded that the increase in peak current for the oxidation and reduction of Ce3+/Ce4+ redox couple in the presence of SSA is not caused by the oxidation and reduction of SSA.
Table 1: Cathodic and anodic peak current and peak potential obtained from Fig. 1 Additive Peak current [mA] Ipc/Ipa Peak potential [mV] Anodic Ipa Cathodic Ipc Anodic Cathodic Separation No 1.742 1.403 0.81 1363 1240 123 SSA 2.300 2.037 0.89 1337 1240 97 Some data obtained from Fig. 1 are summarized in Table 1.
The comparison of our value in sulfuric acid media with literature data is good.
Online since: January 2020
Authors: S.A. Layhan, A.A. Veselovsky
The effect of holding time on the composition of the obtained magnetic concentrate and ferronickel
Chemical composition and yield of ferronickel obtained from smelting of magnetic concentrate
Chemical composition and yield
of magnetic concentrate
Yield
[%]
Chemical composition
of ferronickel [mass %]
Holding time, hours
Concentrates after separation
Magnetic
[mass %]
Non-magnetic, [mass %]
Cr
Ni
S
Si
Co
Fe
34
0.8
9.2
3.0
3.0
0.8
ost
1
15
85
28
1.0
6.1
1.7
4.3
0.7
ost
2
69
31
27
1.1
6.2
1.8
3.4
0.9
ost
4
64
36
32
1.9
6.2
4.5
6.0
0.8
ost
6
54
46
34
1.2
7.0
4.2
3.0
0.7
ost
8
62
38
Analyzing the data from Table 2, it can be concluded that the degree of extraction of the waste nickel into magnetic concentrate is 80-85%, whereas during subsequent smelting nickel almost completely transferred into the melt (Table 4).
According to the data from the table, the slag is represented by gangue material purified from iron and nickel in the form of a dark-colored glassy phase.
Grieveson, Carbothermic reduction of chalcopyrite in presence of lime, Proc.Symp.TMSAnnu.
Jha, Thermodynamic considerations for the extraction of Ni and Co metals from sulphide and oxide minerals by reduction technique, Proc.in Honor D.E.
Fedichkin, Research of process of depletion of converter slag of nickel manufacture by reduction-sulphiding complexes containing aluminum, Thesis of the candidate of technical sciences, Ekaterinburg, 2005
According to the data from the table, the slag is represented by gangue material purified from iron and nickel in the form of a dark-colored glassy phase.
Grieveson, Carbothermic reduction of chalcopyrite in presence of lime, Proc.Symp.TMSAnnu.
Jha, Thermodynamic considerations for the extraction of Ni and Co metals from sulphide and oxide minerals by reduction technique, Proc.in Honor D.E.
Fedichkin, Research of process of depletion of converter slag of nickel manufacture by reduction-sulphiding complexes containing aluminum, Thesis of the candidate of technical sciences, Ekaterinburg, 2005
Online since: October 2025
Authors: Oleksii Bashynskyi
The mechanical analysis is performed to determine the stress-strain state of the structure, taking into account the reduction in the stiffness and strength characteristics of the section and structural materials due to the elevated temperature.
The obtained data from the temperature analysis are used to modify the mechanical parameters, which makes it possible to assess the behaviour of the structure in fire conditions and determine its ability to withstand the specified loads during the design period [1, 2, 3].
According to this average temperature, each section will be assigned its own reduction factor of the elastic modulus.
The average temperature and, accordingly, the coefficient of elastic modulus reduction for each section: 1.
Comparison of the numerical results of the study and the data of the full-scale experiment gave a high coincidence (3%).
The obtained data from the temperature analysis are used to modify the mechanical parameters, which makes it possible to assess the behaviour of the structure in fire conditions and determine its ability to withstand the specified loads during the design period [1, 2, 3].
According to this average temperature, each section will be assigned its own reduction factor of the elastic modulus.
The average temperature and, accordingly, the coefficient of elastic modulus reduction for each section: 1.
Comparison of the numerical results of the study and the data of the full-scale experiment gave a high coincidence (3%).
Online since: December 2011
Authors: Li Wei Duan, Xue Jing Qi, Yun Li Feng
According to the Mechanical technical parameters of Gleeble-3500 thermomechanical simulator, combined with the parameters in actual scene, the following simulation programme is developed:
(1) The proof sample is heated to 1150˚C with the rate 10˚C/s, then waiting for 3 minutes; Cooled to 1000˚C with the rate 8˚C/s, deformation 40% (reduction 6 mm), deformation rate 5 s-1, Then cooled to 900˚C with the rate 5˚C/s, deformation 30% (reduction 2.7mm), deformation rate of 50s-1.
(3) The proof sample is heated to 1150˚C with the rate 15˚C/s, then waiting for 3min; Cooled it to 1000˚C with the rate 8˚C/s, deformation 40% (reduction 6 mm), deformation rate 5 s-1; Then cooled to 900˚C with the rate 5˚C/s, deformation 30% (reduction 2.7mm), deformation rate of 50 s-1.
Results and Disscution Experimental Data and Analysis on Dynamic CCT Curve.
The data on temperature-expansion recorded by Gleeble-3500 thermal simulation mill is disposed with the software Origin in this chapter, phase transition points and dynamic CCT curve of low carbon-manganese steel.continuous cooling transformation are taken respectively on Table.2 and Figure. 1.
(3) The proof sample is heated to 1150˚C with the rate 15˚C/s, then waiting for 3min; Cooled it to 1000˚C with the rate 8˚C/s, deformation 40% (reduction 6 mm), deformation rate 5 s-1; Then cooled to 900˚C with the rate 5˚C/s, deformation 30% (reduction 2.7mm), deformation rate of 50 s-1.
Results and Disscution Experimental Data and Analysis on Dynamic CCT Curve.
The data on temperature-expansion recorded by Gleeble-3500 thermal simulation mill is disposed with the software Origin in this chapter, phase transition points and dynamic CCT curve of low carbon-manganese steel.continuous cooling transformation are taken respectively on Table.2 and Figure. 1.
Online since: August 2013
Authors: Jing Huang, Hai Feng Sang, Chao Xu, Dan Yang Wu
Secondly, compare the facial feature with the data base, to identify the face identity.
In this paper the Fisherface method in the literature 16 is adopted, this method is two times of projection transformation of the original sample data, the principal component analysis, projection, and then in the transform projection subspace in a discriminant analysis, projection, and build a face recognition system based on Fisher linear PCA transform discriminant.
Small image library of 50 people is builded up. 2) Face feature extraction method of training: method of extracted features of face images using 2D-Gabor filtering is adopted, and the extracted characteristics will be carried out by Fisherface method for dimensionality reduction.
For 200 pictures of 50 people participated in the training, we get the characteristic dimension 5440, 2 dimension after dimension reduction.
Training completed, time-consuming 2.334354s. 3) Face tracking and recognition: multi images is registered as prototype, feature of these images after dimensionality reduction is saved.
In this paper the Fisherface method in the literature 16 is adopted, this method is two times of projection transformation of the original sample data, the principal component analysis, projection, and then in the transform projection subspace in a discriminant analysis, projection, and build a face recognition system based on Fisher linear PCA transform discriminant.
Small image library of 50 people is builded up. 2) Face feature extraction method of training: method of extracted features of face images using 2D-Gabor filtering is adopted, and the extracted characteristics will be carried out by Fisherface method for dimensionality reduction.
For 200 pictures of 50 people participated in the training, we get the characteristic dimension 5440, 2 dimension after dimension reduction.
Training completed, time-consuming 2.334354s. 3) Face tracking and recognition: multi images is registered as prototype, feature of these images after dimensionality reduction is saved.
Online since: October 2012
Authors: Li Hua Li
(2) negotiate with suppliers, and arranging factory visits, establishment of supplier data
(6) establish procurement operations as required by the order data
(7) to understand market trends, collecting exact data such as market supply and demand prices to cost analysis
Powerful print feature can print purchasing documents at any time, data export function, conveniently transfer purchasing documents to Excel data format and Word data format, is easy to adjust and modify format according to its own needs at any time. 5.2 Fair and transparent for procurement Administrators, with permissions, from the procurement planning to procurement contracts, purchases, returns, purchases, payments, purchase orders, can comprehensively follow these series of work, which can effectively monitor procurement process, thereby ensuring the impartiality of procurement. 5.3 Full-process purchase cost control Whole process cost control purposes could be realized due to the features that purchase software themselves have.
Existing problems and suggested solutions Despite there are many benefits by use of procurement software to make purchase management for project, but the software itself can only ensure the accuracy of input data and results, and is not a panacea, successful implementation of the procurement depends on the experience of procurement officers to judge.
(6) establish procurement operations as required by the order data
(7) to understand market trends, collecting exact data such as market supply and demand prices to cost analysis
Powerful print feature can print purchasing documents at any time, data export function, conveniently transfer purchasing documents to Excel data format and Word data format, is easy to adjust and modify format according to its own needs at any time. 5.2 Fair and transparent for procurement Administrators, with permissions, from the procurement planning to procurement contracts, purchases, returns, purchases, payments, purchase orders, can comprehensively follow these series of work, which can effectively monitor procurement process, thereby ensuring the impartiality of procurement. 5.3 Full-process purchase cost control Whole process cost control purposes could be realized due to the features that purchase software themselves have.
Existing problems and suggested solutions Despite there are many benefits by use of procurement software to make purchase management for project, but the software itself can only ensure the accuracy of input data and results, and is not a panacea, successful implementation of the procurement depends on the experience of procurement officers to judge.
Online since: July 2013
Authors: Chang He Wang, Wei Chao Li, Ji Kun Ou, Xu Hai Yang
In the end, the method has been verified to be successful by calculating and analysing simulated data and practical measured data.
Analysis of Simulated Data.
Table 1 Concrete situation of simulated data No.
Analysis of Practical Measured Data.
Finally, it has been verified that this method is successful by calculating and analysing simulated data and practical measured data
Analysis of Simulated Data.
Table 1 Concrete situation of simulated data No.
Analysis of Practical Measured Data.
Finally, it has been verified that this method is successful by calculating and analysing simulated data and practical measured data
Online since: September 2012
Authors: Patrick Dyer
With supporting data, the evaluation of these samples explores the potential of integrating small diameter Nitinol wires into woven structures and the resultant levels of shape transfer, control and cyclic speed achievable.
As part of the ADAPT Project it was noted that with a reduction in the NiTi diameter there was a corresponding reduction in the shape memory effect [12-14].
To balance this reduction it is proposed that a corresponding increase in the NiTi volume fraction would re-establish the shape memory effect.
If the intersections between the SMA and supporting textile is reduced and offers too much freedom of movement, the shape transfer from the wire to the textile sees a corresponding reduction and a more open arc is formed.
The first of these was the increased weight and bulk of the fabric due to the number of warp threads, but more critically the increase in end per inch results in a corresponding reduction in weft threads per inch.
As part of the ADAPT Project it was noted that with a reduction in the NiTi diameter there was a corresponding reduction in the shape memory effect [12-14].
To balance this reduction it is proposed that a corresponding increase in the NiTi volume fraction would re-establish the shape memory effect.
If the intersections between the SMA and supporting textile is reduced and offers too much freedom of movement, the shape transfer from the wire to the textile sees a corresponding reduction and a more open arc is formed.
The first of these was the increased weight and bulk of the fabric due to the number of warp threads, but more critically the increase in end per inch results in a corresponding reduction in weft threads per inch.
Online since: June 2015
Authors: Christina N. Zavalishina
It is proved that the process of obtaining more objective data can be regulated by reducing or increasing the number of performance indicators.
Rasch model is widely used in education where the initial data are collected through test or survey results.
It is able to turn the measurements made on ordinal scales (in coded values of latent variables) into linear measurements and as a result qualitative data can be processed by quantitative methods.
The compatibility of the data from Form 1 and the Rasch model was determined by Pearson criterion.
The theory of latent variable measurement based on Rasch model is able to · save resources needed to conduct a self-assessment in an organization by finding an optimal combination of self-assessment indicators based on two main criteria: reduction of the number of indicators and reduction of their grades; · avoid difficulties that are often experienced by experts who are setting certain criteria in order to assess an organization in terms of its quality assurance activities.
Rasch model is widely used in education where the initial data are collected through test or survey results.
It is able to turn the measurements made on ordinal scales (in coded values of latent variables) into linear measurements and as a result qualitative data can be processed by quantitative methods.
The compatibility of the data from Form 1 and the Rasch model was determined by Pearson criterion.
The theory of latent variable measurement based on Rasch model is able to · save resources needed to conduct a self-assessment in an organization by finding an optimal combination of self-assessment indicators based on two main criteria: reduction of the number of indicators and reduction of their grades; · avoid difficulties that are often experienced by experts who are setting certain criteria in order to assess an organization in terms of its quality assurance activities.
Online since: May 2004
Authors: Z. Cvijović, M. Vratnica, Marko Rakin
The data are compared to current fracture toughness models,
with the results applied to improve the modeling of toughness using microstructural parameters and
basic tensile properties.
The data are then quantitatively correlated to fracture toughness and the bulk microstructural attributes estimated via stereological analysis.
Based on these experimental data, a model for plane strain fracture toughness was developed and is described in the next section. 3.
Table 3 Tensile and fracture toughness data along with results of quantitative fractography.
This is consistent with the data listed in Table 2.
The data are then quantitatively correlated to fracture toughness and the bulk microstructural attributes estimated via stereological analysis.
Based on these experimental data, a model for plane strain fracture toughness was developed and is described in the next section. 3.
Table 3 Tensile and fracture toughness data along with results of quantitative fractography.
This is consistent with the data listed in Table 2.