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Online since: September 2016
Authors: Sergey P. Zhuravkov, Gennadii A. Pribytkov, Alexey V. Pustovalov, Galina L. Lobanova, Vasilii V. Fedorov, Luiza V. Nadeina
This cooling metal is in the hydrothermal oxidation zone if water is used as the power fluid; and the cooling metal is in the reduction zone if the organic liquids are used as the power fluid.
After finishing the dispersion stage, рН and oxidation reduction potential of suspensions were measured with a help of рН 150 МI.
The oxidation reduction potential increases in wider ranges.
Therefore, literature data analysis and visual observation allow us to establish that the heavy particles of black powder are formed.
According to XRD analysis data, the light fraction of the investigated powder does not include pure metal as well.
After finishing the dispersion stage, рН and oxidation reduction potential of suspensions were measured with a help of рН 150 МI.
The oxidation reduction potential increases in wider ranges.
Therefore, literature data analysis and visual observation allow us to establish that the heavy particles of black powder are formed.
According to XRD analysis data, the light fraction of the investigated powder does not include pure metal as well.
Online since: December 2013
Authors: Fillemon Nduvu Nangolo
To investigate this, artificial analytical data were processed in MATLAB environment to estimate the modal parameters.
Platt in [4], [5] explain how to fit experimental data using SDOF and MDOF techniques.
In the current work, this data will be used to find the modal parameters of the system [3].
To do this, the next step is to estimate the roots and residues from the sampled data.
The simulated analytical data is very useful because the exact values are known.
Platt in [4], [5] explain how to fit experimental data using SDOF and MDOF techniques.
In the current work, this data will be used to find the modal parameters of the system [3].
To do this, the next step is to estimate the roots and residues from the sampled data.
The simulated analytical data is very useful because the exact values are known.
Online since: January 2013
Authors: Xiao Hu Zheng, Gu Feng
Due to the presence of ferrous ion, nickel reduction is inhibited while iron deposition rate is enhanced when compared to their respective deposition rates in single metal plating baths.
In the earlier studies, the anomalous behavior was assumed due to precipitation of iron hydroxide on electrode surface that it was inhibited nickel reduction, instead of iron reduction.
Ni-20%Fe deposit has a lowest remanence and the coercivity show a monotonic decrease with increasing the Fe content in deposit.The test data indicate that the Ni-Fe deposit has a satisfactory magnetism property.
In the earlier studies, the anomalous behavior was assumed due to precipitation of iron hydroxide on electrode surface that it was inhibited nickel reduction, instead of iron reduction.
Ni-20%Fe deposit has a lowest remanence and the coercivity show a monotonic decrease with increasing the Fe content in deposit.The test data indicate that the Ni-Fe deposit has a satisfactory magnetism property.
Online since: February 2012
Authors: Ming Du, Pei Jun Ma, Yue Hao
This data is consistent with the reference[7] and is reliable.
So the reduction of the number of the GB can lead to the reduction of the energy of the interconnect system.
As the result of the reduction of the number of GB, which is an important EM diffusion path, the EM diffusion is restrained.
So the reduction of the number of the GB can lead to the reduction of the energy of the interconnect system.
As the result of the reduction of the number of GB, which is an important EM diffusion path, the EM diffusion is restrained.
Online since: April 2014
Authors: Zhi Yi Cai, Shi Ming Xie, Xiao Qin Cao, Qian Xue, Shan Dong Li, Hong Lei Du, Xiao Yang Gao
Introduction
With the rapid development of information technology, the miniaturization of electromagnetic devices, the reduction of the power, the improvement of the reliability and the increasing of data transmission rate become the inevitable trend of development.
In addition, it is well-known that eddy current losses give rise to a reduction of the permeability, which can significantly effect the efficiency of electromagnetic devices [4,6].
With the increase of Al2O3 chips n, diffraction peak is gradually widen, indicating a reduction of the grain size of the films.
In addition, it is well-known that eddy current losses give rise to a reduction of the permeability, which can significantly effect the efficiency of electromagnetic devices [4,6].
With the increase of Al2O3 chips n, diffraction peak is gradually widen, indicating a reduction of the grain size of the films.
Online since: December 2003
Authors: J.E. Barralet, Liam M. Grover, Uwe Gbureck, A. Hutton, David Farrar, C. Ansell
Porosity reduction of cements can be
accomplished by reducing the water demand of the system or by compaction.
Two main features are to be noted, firstly the agreement between the density measured by pycnometry and that calculated from phase composition is generally very good, (< 3%) providing independent verification of the phase analysis data and secondly density appeared to increase with compaction pressure, suggesting that the amount of unreacted ßTCP, (� = 3.0 g cm-3) was higher in the compacted material.
At compaction pressures of between 10-25 MPa, although the reduction in the porosity was ~10% this did not result in a marked increase in compressive strength possibly due to the lower degree of reaction (Fig.2).
Such dramatic gains were not noted following the compaction of this cement system; this is probably due to the reduction in the extent of reaction with an increase in compaction pressure.
Two main features are to be noted, firstly the agreement between the density measured by pycnometry and that calculated from phase composition is generally very good, (< 3%) providing independent verification of the phase analysis data and secondly density appeared to increase with compaction pressure, suggesting that the amount of unreacted ßTCP, (� = 3.0 g cm-3) was higher in the compacted material.
At compaction pressures of between 10-25 MPa, although the reduction in the porosity was ~10% this did not result in a marked increase in compressive strength possibly due to the lower degree of reaction (Fig.2).
Such dramatic gains were not noted following the compaction of this cement system; this is probably due to the reduction in the extent of reaction with an increase in compaction pressure.
Online since: October 2011
Authors: Kan Qin, Kai Luo, Dai Jin Li, Miao Li, Feng Hu
Moment given by the oscillating bar to the low-speed shaft in the gear box is still showed as , is the efficiency of the gear box, is the reduction ratio, then is the output torque of the high-speed shaft in the gear box which would be passed on to the shaft of the motor rotor.
Once the diameter was designated, the only matter left need to be done would be choosing the optimal which is the reduction ratio of the gear box.
The selection of motor gear box combination in specific cases should be conducted with detailed calculating check based on specific conditions of oscillating system. 3 Simulation Analyses Corresponding to the verification test device, mass of the pendulum is 1.1kg; length of the oscillating bar is 0.2m; kinetic frequency of the frame is 0.5Hz; amplitude is 45°; reduction ratio of the gear box is 33; transmission efficiency is 0.7; armature resistance is 0.63; load resistance is 3; constant of the torque is 25.5mNm/A.
Compare Fig.6 and Fig.3, test data fit the simulation results well, proving that the analysis method is correct.
Once the diameter was designated, the only matter left need to be done would be choosing the optimal which is the reduction ratio of the gear box.
The selection of motor gear box combination in specific cases should be conducted with detailed calculating check based on specific conditions of oscillating system. 3 Simulation Analyses Corresponding to the verification test device, mass of the pendulum is 1.1kg; length of the oscillating bar is 0.2m; kinetic frequency of the frame is 0.5Hz; amplitude is 45°; reduction ratio of the gear box is 33; transmission efficiency is 0.7; armature resistance is 0.63; load resistance is 3; constant of the torque is 25.5mNm/A.
Compare Fig.6 and Fig.3, test data fit the simulation results well, proving that the analysis method is correct.
Online since: February 2014
Authors: Ri Sheng Wu, Yao Jian Wu, Xi Liu, Yang Luo
Improving the marine disaster warning and emergency response system construction
The marine station and buoy observation systems should be strengthened and improved to collect reliable and accurate marine information and data.
Conclusions This paper gave some suggestions about large-scale projects of coastal marine disaster risk troubleshooting, marine disasters risky zoning, marine disasters risky assessment, and marine disasters early warning, in order to contribute some efforts to system construction of marine disaster prevention and mitigation and integrated risky management of marine disasters, and establishment of coastal areas disaster reduction system composed by the government, businesses, and communities.
Meteorology and Dister Reduction Research,2008,31(4):28-33
Marine Disasters and Its Reduction in the Last 10 Years [J].
Conclusions This paper gave some suggestions about large-scale projects of coastal marine disaster risk troubleshooting, marine disasters risky zoning, marine disasters risky assessment, and marine disasters early warning, in order to contribute some efforts to system construction of marine disaster prevention and mitigation and integrated risky management of marine disasters, and establishment of coastal areas disaster reduction system composed by the government, businesses, and communities.
Meteorology and Dister Reduction Research,2008,31(4):28-33
Marine Disasters and Its Reduction in the Last 10 Years [J].
Online since: December 2012
Authors: Ling Jun Kong, Jun Liu
At home and abroad, experts and scholars have done a lot of work in the single-bent industrial factories, but there are few theoretical achievements in thses multi-layer frame-bent structure industrial factories, especially in the analysis of energy dissipation and seismic reduction.
Therefore, study of the energy dissipation and seismic reduction to the new multi-layer frame-bent structure of industrial factories has important practical significance.
The S shaped steel damper is a new kind of seismic reduction device, which can absorb the earthquake energy by plastic deformation to protect the main structure.
The paper only extracts some parts of the results, due to a great quantity of the datum.
And the other datum also has the similar conclusions.
Therefore, study of the energy dissipation and seismic reduction to the new multi-layer frame-bent structure of industrial factories has important practical significance.
The S shaped steel damper is a new kind of seismic reduction device, which can absorb the earthquake energy by plastic deformation to protect the main structure.
The paper only extracts some parts of the results, due to a great quantity of the datum.
And the other datum also has the similar conclusions.
Online since: January 2013
Authors: Leng Tian, Ming Xu Ma, Shun Li He
According to data provided by CNPC, low permeability oil reservoirs has already accounted for 65 percent of its total 56.9 billion tons proved oil reserves till 2009 [1].
Stress-Sensitivity and Permeability Reduction As advanced water injection technology makes fully use of stress-sensitivity effect, a first study of flow behaviors in stress-sensitivity matrix is necessary.
Reduction of pressure and permeability is the core reason for general low production and recovery of these reservoirs.
Fig. 2 Bottomhole Pressure Distribution Influenced by Stress-sensitivity Effects AWI AWI, which is to inject water into formation for 3 to 6 months before producing, will maintain formation pressure to a satisfied value to avoid permeability reduction.
Stress-Sensitivity and Permeability Reduction As advanced water injection technology makes fully use of stress-sensitivity effect, a first study of flow behaviors in stress-sensitivity matrix is necessary.
Reduction of pressure and permeability is the core reason for general low production and recovery of these reservoirs.
Fig. 2 Bottomhole Pressure Distribution Influenced by Stress-sensitivity Effects AWI AWI, which is to inject water into formation for 3 to 6 months before producing, will maintain formation pressure to a satisfied value to avoid permeability reduction.