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Online since: January 2022
Authors: Nandakumar Kalarikkal, Sabu Thomas, Jesiya Susan George, Jibin Keloth Paduvilan, Prajitha Velayudhan, Nishar Hameed
The reduction of graphene oxide (GO) to rGO is popular and attractive.
Hence, CARGO 180 shows a high degree of reduction among all other samples due to the synergistic reduction effect of cashew apple extract, which imparts i.e., a chemical reduction via various polyphenolic components in it and secondly, the high reaction temperature of 180℃ i.e., imparts a thermal reduction.
The d-spacing of the GO and CARGO 80 was calculated from HRTEM images using ImageJ software and was found to be 0.78 and 0.38nm respectively, which is in line with the data obtained from XRD studies.
Šiller, Green reduction of graphene oxide using alanine, Mater.
Zein, Green tea polyphenol-reduced graphene oxide: Derivatisation, reduction efficiency, reduction mechanism and cytotoxicity, RSC Adv. 4 (2014) 34510–34518
Hence, CARGO 180 shows a high degree of reduction among all other samples due to the synergistic reduction effect of cashew apple extract, which imparts i.e., a chemical reduction via various polyphenolic components in it and secondly, the high reaction temperature of 180℃ i.e., imparts a thermal reduction.
The d-spacing of the GO and CARGO 80 was calculated from HRTEM images using ImageJ software and was found to be 0.78 and 0.38nm respectively, which is in line with the data obtained from XRD studies.
Šiller, Green reduction of graphene oxide using alanine, Mater.
Zein, Green tea polyphenol-reduced graphene oxide: Derivatisation, reduction efficiency, reduction mechanism and cytotoxicity, RSC Adv. 4 (2014) 34510–34518
Online since: July 2013
Authors: Hua Li, Da Xu, Jian Zhang, Meng Chun Zhong
Introduction
The transient angle test data analysis system refers to the study of transient angular displacement tube.
Noise analysis of PSD test system PSD test system transient elevation.PSD test system is composed of semiconductor laser, optical system, position sensitive device (PSD) composition and adaptation circuit, data acquisition card, data processing software and computer etc.
If handled properly, will not be able to measure the accurate data.
This paper uses the method of wavelet analysis for noise reduction of vibration signal acquisition.
The wavelet decomposition levels also have influence on the effect of noise reduction.
Noise analysis of PSD test system PSD test system transient elevation.PSD test system is composed of semiconductor laser, optical system, position sensitive device (PSD) composition and adaptation circuit, data acquisition card, data processing software and computer etc.
If handled properly, will not be able to measure the accurate data.
This paper uses the method of wavelet analysis for noise reduction of vibration signal acquisition.
The wavelet decomposition levels also have influence on the effect of noise reduction.
Online since: July 2022
Authors: Christian Overhagen, Kaiqi Fu
The results are compared to the original training data, as
well as newly generated test data.
On this basis, we now want to construct a data-driven model by generating pass design data using the method described before and feed this data into an artificial neural network.
The neural network was tested against the training data and against test data generated by the same procedure as the training data, but at different roll diameters.
However, a data-driven approach is always limited to the data ranges of the provided training data.
In further studies, the data range of the model will be extended to a broader range of sections, reductions and roll diameters.
On this basis, we now want to construct a data-driven model by generating pass design data using the method described before and feed this data into an artificial neural network.
The neural network was tested against the training data and against test data generated by the same procedure as the training data, but at different roll diameters.
However, a data-driven approach is always limited to the data ranges of the provided training data.
In further studies, the data range of the model will be extended to a broader range of sections, reductions and roll diameters.
Online since: December 2014
Authors: Xiao Hang He, Yan Ge Zhang
Joint mechanism (J1) which allows Annex I inter country to attain emission reduction credits from the investment projects generating emission reductions.
The demand-supply relationship adjustment forms the carbon emission reductions' even price.
United Nations data shows that the potential of Chinese residential building energy-saving is great.
Secondly, it should be as soon as possible to resolve the problems in data acquisition targets, collection methods, collecting channels of building energy consumption.
With unified standard statistical measures, the data provided could be the support of the energy audits of large-scale public buildings, energy-saving transformation and the heat-supply measurement of existed residential buildings and the benchmarks of emission reductions.
The demand-supply relationship adjustment forms the carbon emission reductions' even price.
United Nations data shows that the potential of Chinese residential building energy-saving is great.
Secondly, it should be as soon as possible to resolve the problems in data acquisition targets, collection methods, collecting channels of building energy consumption.
With unified standard statistical measures, the data provided could be the support of the energy audits of large-scale public buildings, energy-saving transformation and the heat-supply measurement of existed residential buildings and the benchmarks of emission reductions.
Online since: April 2012
Authors: Mohd Jailani Mohd Nor, Muhamad Razi, Zambri Harun, Elwaleed Awad
The single number sound reduction index (RW) for glass, acrylic and polycarbonate as double layers with air gap were evaluated.
The measuring system used comprises a dual channel Symphonie (01 dB model) real time acquisition unit that transfers the data in real-time to a computer, a speaker, an amplifier of ACLAN GDB95 model, and two microphones of models 40AE-121 and 40AP-121.
A dbBATI32 software was used as data analyzer.
The glass shows higher weighted sound reduction index compared with acrylic and polycarbonate for all air gap thicknesses.
The results show that the weighted sound reduction index increases as the air gap thickness increases for both glass and polycarbonate.
The measuring system used comprises a dual channel Symphonie (01 dB model) real time acquisition unit that transfers the data in real-time to a computer, a speaker, an amplifier of ACLAN GDB95 model, and two microphones of models 40AE-121 and 40AP-121.
A dbBATI32 software was used as data analyzer.
The glass shows higher weighted sound reduction index compared with acrylic and polycarbonate for all air gap thicknesses.
The results show that the weighted sound reduction index increases as the air gap thickness increases for both glass and polycarbonate.
Online since: January 2006
Authors: F.C. Lin, Shen Yung Lin
The abductive network is also applied to synthesize the data sets obtained from the
numerical simulations.
The sound tubular flanged parts were produced only for relative die gap heights of up to 6.1/ =wt and relative height reduction ξ( tl /2∆ ) less than 100%.
Figure 3(a) shows both the minimum amount of preforming required and the minimum relative depth of die cavity are 7.3% relative reduction in height and 0.21, respectively in the case that the end stroke of deformation is 90% relative height reduction of the billet.
When the relative height reduction at the end stroke of deformation becomes larger shown in figures 3(b) and 3(c) with 100% and 110% relative height reductions, both those two minimum quantities are increased.
oi dd / wt / ξ(%) min)/2( ta AIM min)/2( ta FEM minζ (%) AIM minζ (%) FEM 0.514 2.2 95 0.269 0.274 9.2 9.15 0.514 2.6 105 0.351 0.354 12.8 12.5 0.629 2.2 105 0.297 0.313 11.7 12.2 0.629 2.6 95 0.333 0.336 15.2 15.1 In order to validate the accuracy of the prediction model, another four data sets are tested for minimum relative depth of die cavity and the minimum amount of preforming.
The sound tubular flanged parts were produced only for relative die gap heights of up to 6.1/ =wt and relative height reduction ξ( tl /2∆ ) less than 100%.
Figure 3(a) shows both the minimum amount of preforming required and the minimum relative depth of die cavity are 7.3% relative reduction in height and 0.21, respectively in the case that the end stroke of deformation is 90% relative height reduction of the billet.
When the relative height reduction at the end stroke of deformation becomes larger shown in figures 3(b) and 3(c) with 100% and 110% relative height reductions, both those two minimum quantities are increased.
oi dd / wt / ξ(%) min)/2( ta AIM min)/2( ta FEM minζ (%) AIM minζ (%) FEM 0.514 2.2 95 0.269 0.274 9.2 9.15 0.514 2.6 105 0.351 0.354 12.8 12.5 0.629 2.2 105 0.297 0.313 11.7 12.2 0.629 2.6 95 0.333 0.336 15.2 15.1 In order to validate the accuracy of the prediction model, another four data sets are tested for minimum relative depth of die cavity and the minimum amount of preforming.
Online since: September 2014
Authors: Chao Voon Samuel Lim, Ai Jun Huang, Qi Lu, Xiao Guang Yang, Yu Feng Cheng
Therefore, all the test data were modelled as function of strain, temperature and strain rate for precious reflection of material behavior in rigid-plastic finite element model.
It can be found that the simulated force is in a good agreement with the measured data, which demonstrates the reasonable of finite element model.
Figure 2 Cogging Process Model Figure 3 Acquisition data from industry Figure 4 Press force validation Sensitivity Analysis of Forging Process Parameters In this section, the effect of feed, reduction and press speed on workpiece deformation and internal quality was investigated using numerical model combined with Design of Experiment (DoE) method.
Figure 6 Illustration of data acquisition lines The average effective strain data in each data acquisition line is noted as follows, i=0, 1, 2, 3, 4 (1) where i represents the number of data acquisition line, j represents the number of effective strain data in the selected data acquisition line, represents the effect strain data point in the selected data acquisition line.
The normalized standard deviation of average effective strain data in these five lines is defined to reflect the strain variation in the radial direction due to the change of different process parameters.
It can be found that the simulated force is in a good agreement with the measured data, which demonstrates the reasonable of finite element model.
Figure 2 Cogging Process Model Figure 3 Acquisition data from industry Figure 4 Press force validation Sensitivity Analysis of Forging Process Parameters In this section, the effect of feed, reduction and press speed on workpiece deformation and internal quality was investigated using numerical model combined with Design of Experiment (DoE) method.
Figure 6 Illustration of data acquisition lines The average effective strain data in each data acquisition line is noted as follows, i=0, 1, 2, 3, 4 (1) where i represents the number of data acquisition line, j represents the number of effective strain data in the selected data acquisition line, represents the effect strain data point in the selected data acquisition line.
The normalized standard deviation of average effective strain data in these five lines is defined to reflect the strain variation in the radial direction due to the change of different process parameters.
Online since: August 2014
Authors: Bing Tao Tang, Guang Chun Wang, Xiao Juan Lin, Wei Zheng, Yan Zhi Sun
Based on the experimental data, the micro-upsetting process is simulated using the proposed friction model.
The effect of reduction amount.
The amount of reduction is one of the influence factors on the friction behavior in forming process.
The larger amount of reduction means the higher normal pressure on the contact surface.
Fig.1 Relationship between Friction coefficient μ and reduction ΔH/H with specimen sizes Fig.2 Relationship between friction coefficient μ and specimen diameter D with reductions 5.
The effect of reduction amount.
The amount of reduction is one of the influence factors on the friction behavior in forming process.
The larger amount of reduction means the higher normal pressure on the contact surface.
Fig.1 Relationship between Friction coefficient μ and reduction ΔH/H with specimen sizes Fig.2 Relationship between friction coefficient μ and specimen diameter D with reductions 5.
Online since: August 2009
Authors: Yan Sheng Yin, Shao Hua Zheng, Bin Liu, Fei Fei Zhang
The anti-wear and friction reduction properties of
nano-ZrO2 used as additive in lubrication were analyzed by friction and wear test machine of
MMU-10G.
The modified nano-ZrO2 can increase the anti-wear and friction reduction properties of the base oil.
Many articles have reported their excellent anti-wear and friction reduction properties as additive in lubrication [3-6].
The anti-wear and friction reduction properties as nano-lubrication additives were studied and the tribological mechanism was preliminarily discussed. 2 Experimental 2.1Surface Modification of Nano-ZrO2 Firstly, KH-570 was hydrolyzed for 1h under the condition of PH=3-4.
Weighed the thrust-ring and the test-ring and recorded the data.
The modified nano-ZrO2 can increase the anti-wear and friction reduction properties of the base oil.
Many articles have reported their excellent anti-wear and friction reduction properties as additive in lubrication [3-6].
The anti-wear and friction reduction properties as nano-lubrication additives were studied and the tribological mechanism was preliminarily discussed. 2 Experimental 2.1Surface Modification of Nano-ZrO2 Firstly, KH-570 was hydrolyzed for 1h under the condition of PH=3-4.
Weighed the thrust-ring and the test-ring and recorded the data.
Online since: February 2014
Authors: Hameed Ullah
The reduction of 1,2-trans-diphenylethene is carried out at low temperature (~80°C) and atmospheric hydrogen pressure.
They prepared Ni/Al2O3 by reduction of NiO under steady stream of [H2Al(OtBu)]2 in cold wall MOCVD reactor [12].
XRD data were collected on XPert-MPD diffractometer of Phillips using Cu Kα radiation (λ = 1.5406 Å) operating at 40 kV and 40 mA.
The reduction was carried out for approximately 10-15 (short time) and 25-30 minutes (long time).
Once the reduction of Ni+2 to Ni0 is completed, the excess precursor will decompose according to its natural way.
They prepared Ni/Al2O3 by reduction of NiO under steady stream of [H2Al(OtBu)]2 in cold wall MOCVD reactor [12].
XRD data were collected on XPert-MPD diffractometer of Phillips using Cu Kα radiation (λ = 1.5406 Å) operating at 40 kV and 40 mA.
The reduction was carried out for approximately 10-15 (short time) and 25-30 minutes (long time).
Once the reduction of Ni+2 to Ni0 is completed, the excess precursor will decompose according to its natural way.