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Effects of Alveolar Bone Loss and Post-Core Design on Stress Distribution of Severely Damaged Canine
Online since: June 2012
Authors: Long Quan Shao, Ning Wen, Bin Deng, Yuan Fu Yi, Shan Yu Zhou, Ya Gao, Bang Lian Deng
The horizontal bone loss of endodontically treated teeth restored with dowels does have a significant effect on their load capability, a linear relationship was observed between the level of bone loss and the amount of force reduction [3].
Then geometric data were saved as IGES format which could be exported to ABAQUS software (ABAQUS 6.10, SIMULIA, Rhode Island, USA) and afterwards the two-dimensional model of maxillary canine was finished using CAD of the software.
Another FEA study [9] observed a linear relationship between the level of bone loss and the amount of force reduction.
Thus, it is suggested that an advanced reduction of the bone support might lead to a marked increase of the fracture risk of a post-retained restoration.
Then geometric data were saved as IGES format which could be exported to ABAQUS software (ABAQUS 6.10, SIMULIA, Rhode Island, USA) and afterwards the two-dimensional model of maxillary canine was finished using CAD of the software.
Another FEA study [9] observed a linear relationship between the level of bone loss and the amount of force reduction.
Thus, it is suggested that an advanced reduction of the bone support might lead to a marked increase of the fracture risk of a post-retained restoration.
Online since: June 2014
Authors: Sergey Malopheyev, Sergey Mironov, Rustam Kaibyshev, Vladislav Kulitskiy
.%) denoted as 1570C was produced by semi-continuous casting, homogenized at 360oC for 8 hours and then extruded at 380oC with ~75% reduction.
After ECAP, the material was finally rolled either at ambient or 300oC to a total thickness reduction of ~80%.
This observation agrees well with literature data predicting the preservation of the coherent relationship till the particle size of 116 nm [2] or 40 nm [11].
Considering preservation of fine grained microstructure as well as nano-scale dispersoids in the stir zone (Fig. 3), the material softening is believed to be mainly related with reduction of dislocation density in the rolled materials due to recrystallization during FSW [7,12].
After ECAP, the material was finally rolled either at ambient or 300oC to a total thickness reduction of ~80%.
This observation agrees well with literature data predicting the preservation of the coherent relationship till the particle size of 116 nm [2] or 40 nm [11].
Considering preservation of fine grained microstructure as well as nano-scale dispersoids in the stir zone (Fig. 3), the material softening is believed to be mainly related with reduction of dislocation density in the rolled materials due to recrystallization during FSW [7,12].
Online since: October 2012
Authors: Bao Xin Qi, Han Yan, Shi Yan, Lu Yang
The constitutive model of Cowper-Symonds (CS model) was applied in the paper, shown in Eq.1
(1)
Where σy is the dynamic flow stress at uniaxial plastic strain rate, σ0 is the conceptual “static” flow stress inferred from experimental data, was strain rate, C and P are constants for a particular material, Ep is plastic hardening modulus, β is hardening parameters, εp, eff is effective plastic strain.
Strength reduction factor, reduction factor for modulus of elasticity and reduction factor for proportional limit were used, in the paper, to describe the mechanical properties of steel at elevated temperatures given by the Eurocode3[8].
Strength reduction factor, reduction factor for modulus of elasticity and reduction factor for proportional limit were used, in the paper, to describe the mechanical properties of steel at elevated temperatures given by the Eurocode3[8].
Online since: September 2013
Authors: You Jie Ma, Xue Song Zhou, Cai Ming Wang
In recent years there have been many improved branch interchange [5-7], If the [6] provides a quick branch-exchange method, ignoring the voltage drop using the approximate loss instead of precise loss, In the optimization of ring network ring network maximum power loss reduction of exchange is determined according to the sign and magnitude of optimal load transfer, this algorithm has a fast calculation speed, but different branch exchange sequence lead to different switching results, may obtain different solutions.
It is necessary to combine all kinds of the new situation to continue further research work from the aspects of definition, data representation, coding mechanism and optimization strategy.
Reconfiguration of electric distribution networks for resistive line losses reduction[J].
Distribution feeder reconfiguration for loss reduction[J].
It is necessary to combine all kinds of the new situation to continue further research work from the aspects of definition, data representation, coding mechanism and optimization strategy.
Reconfiguration of electric distribution networks for resistive line losses reduction[J].
Distribution feeder reconfiguration for loss reduction[J].
Online since: December 2014
Authors: Shi Hong Zhang, Xue Yan Wang, Li Qiang Zhu
It is estimated that energy conservation and emission reduction in the coal industry.
Table 1.Composition and content of exhaust gas of catalytic combustion burner SAMPLE COMPOSITION CONTENT NATRUAL GAS-AIR MIXTURES O2 19.9%[v/v] NATRUAL GAS H2S 1.63×10﹣6[mol/mol](2.47[mg/ m3]) EXHAUST GAS O2 9.65%v/v CO2 6.25%v/v NO2 <0.5×10﹣6[mol/mol](1.03[mg/ m3]) CO 4.53×10﹣6[mol/mol](5.66[mg/ m3]) CH4 0.432×10﹣6[mol/mol](0.309[mg/ m3]) Source: National Institute of Metrology(NIM) Apart from the data we measured, there is also a test report of composition and content of exhaust gas produced in catalytic combustion of natural gas provided by NIM which can tell us that the contents of CH4 in exhaust gas were less than 5ppm and the emissions of NO2 and CO were also closed to zero.
[3] Yu Yangchun, Wang Xiaochun, Huang Zhichu, Wang Xiaoming The Investigation and application of Energy Conservation and Emission Reduction in the Industrial Kilns, [J].
[4] Zhang Cuiqing, Du Minghua, Guo Zhi, Yu Zhufeng The Investigation of Energy Conservation and Emission Reduction in the Coal-Fired Industrial Boilers and Kilns, [J].
Table 1.Composition and content of exhaust gas of catalytic combustion burner SAMPLE COMPOSITION CONTENT NATRUAL GAS-AIR MIXTURES O2 19.9%[v/v] NATRUAL GAS H2S 1.63×10﹣6[mol/mol](2.47[mg/ m3]) EXHAUST GAS O2 9.65%v/v CO2 6.25%v/v NO2 <0.5×10﹣6[mol/mol](1.03[mg/ m3]) CO 4.53×10﹣6[mol/mol](5.66[mg/ m3]) CH4 0.432×10﹣6[mol/mol](0.309[mg/ m3]) Source: National Institute of Metrology(NIM) Apart from the data we measured, there is also a test report of composition and content of exhaust gas produced in catalytic combustion of natural gas provided by NIM which can tell us that the contents of CH4 in exhaust gas were less than 5ppm and the emissions of NO2 and CO were also closed to zero.
[3] Yu Yangchun, Wang Xiaochun, Huang Zhichu, Wang Xiaoming The Investigation and application of Energy Conservation and Emission Reduction in the Industrial Kilns, [J].
[4] Zhang Cuiqing, Du Minghua, Guo Zhi, Yu Zhufeng The Investigation of Energy Conservation and Emission Reduction in the Coal-Fired Industrial Boilers and Kilns, [J].
Online since: June 2015
Authors: Barbara Trybalska, Wiesława Nocuń-Wczelik
The formation of hydrated phases leads to the reduction of distance between the grains and the viscosity of paste is enhanced.
They are immobilized (stabilized) in hydrating cement paste, due to the physical and chemical properties of cement matrix; therefore a significant reduction of leaching (up to ppm level) is guaranteed [3].
As it is commonly known in cement chemistry, only the calorimetric measurements give the possibility to follow the changes occurring in the hydrating mixture produced at standard water to cement ratio in a continuous way from the beginning of the process, without removal of water (e.g. for the phase composition studies the so-called “chemical drying” should be done and the data obtained vs. time are of discrete character).
Every retarding admixture brings about the reduction of heat evolved value increase throughout some period of time at early age of hardening (it means even up to 2 days).
They are immobilized (stabilized) in hydrating cement paste, due to the physical and chemical properties of cement matrix; therefore a significant reduction of leaching (up to ppm level) is guaranteed [3].
As it is commonly known in cement chemistry, only the calorimetric measurements give the possibility to follow the changes occurring in the hydrating mixture produced at standard water to cement ratio in a continuous way from the beginning of the process, without removal of water (e.g. for the phase composition studies the so-called “chemical drying” should be done and the data obtained vs. time are of discrete character).
Every retarding admixture brings about the reduction of heat evolved value increase throughout some period of time at early age of hardening (it means even up to 2 days).
Online since: December 2013
Authors: Shariza Azwin Yahya, Mohd Shahrom Ismail, B.T. Hang Tuah bin Baharudin, Zalaida Talib
The high strength-to-weight and high stiffness-to-weight ratios of advanced composite materials offer significant weight reduction potential for these types of structures.
Fig. 1 NASA SP-8007 experimental data of axially compressed cylinder knockdown factor [2] Investigation of composite cylinder knockdown factor Knockdown factor by NASA SP-8007.
The instability response at point A is followed by a sudden reduction of axial load at point B - D that associated with shell transient collapse.
The reduction of shell axial stiffener is associated with the slope at postbuckling region.
Fig. 1 NASA SP-8007 experimental data of axially compressed cylinder knockdown factor [2] Investigation of composite cylinder knockdown factor Knockdown factor by NASA SP-8007.
The instability response at point A is followed by a sudden reduction of axial load at point B - D that associated with shell transient collapse.
The reduction of shell axial stiffener is associated with the slope at postbuckling region.
Online since: October 2013
Authors: Cecilia Demergasso, Lorena V. Escudero, Jonathan Bijman, Guillermo Chong, Juan Jose Pueyo
The enrichments were characterized by denaturing gradient gel electrophoresis (DGGE) of 16S rRNA gene fragments and sequencing, and microbial oxidation and reduction activity were tested by pH and Redox potential changes and KMnO4 methods [5].
Iron and sulfur oxidizing cultures have been enriched where Acidiothiobacilus, Acidiphilium, Leptospirillum and Oxalobacteraceae have been observed (data not shown).
Microbial arsenic and sulphate reduction (AsRB and SRB) was evidenced only in the locations with the highest pH (4.7-5) and was absent in the abiotic controls.
The distribution of AsRB in that environment suggests a critical effect of pH on sulfate and arsenic respiratory reduction.
Iron and sulfur oxidizing cultures have been enriched where Acidiothiobacilus, Acidiphilium, Leptospirillum and Oxalobacteraceae have been observed (data not shown).
Microbial arsenic and sulphate reduction (AsRB and SRB) was evidenced only in the locations with the highest pH (4.7-5) and was absent in the abiotic controls.
The distribution of AsRB in that environment suggests a critical effect of pH on sulfate and arsenic respiratory reduction.
Online since: September 2019
Authors: Yu Wen Tseng, Irwansyah Irwansyah, Jiing Yih Lai, Chao Yaug Liao
Then the bone reduction process was used to detect the fracture area and fracture line.
The fracture line meshes determined by the bone reduction process have only a series of triangular planes of no thicknesses, and the slicing software cannot be used to generate the deposition paths.
However, the fracture line is based on data obtained from the fractured bone mesh model.
Lee, Development of 3D printed bone reduction fracture lines in different color, EPiC Series in Health Sciences, 2 (2018) 83-86.
The fracture line meshes determined by the bone reduction process have only a series of triangular planes of no thicknesses, and the slicing software cannot be used to generate the deposition paths.
However, the fracture line is based on data obtained from the fractured bone mesh model.
Lee, Development of 3D printed bone reduction fracture lines in different color, EPiC Series in Health Sciences, 2 (2018) 83-86.
Online since: August 2014
Authors: Zhi Ping Huang, Shao Jing Su, Jun Peng Hu, Bin Li
Figure 1 is a data sequence containing the CRC.
However, user could make use of iteration to derive the mathematical relationship between registers and input data bits which are CRC-32 of parallel 16-bits and 32-bits data input, then design function modules according to the input data bits using the same method.
SWITCH is the flag of the state machine, which is used for achieving automatic jumping with different input data bits; DATA signal indicates input data; CHECKSUM signal is CRC-32 code which is calculated from the input data; CRCVALID indicates the final result with a group of data for calculating CRC-32 code.
The data source used for the experiment is 256 bits cycle data which begins with C0844D7F and ends with AAAAAAAAAAAA.
Reduction in time period of 64-bits parallel input makes the mathematical relationship more complex and relatively high consumption of resource correspondingly.
However, user could make use of iteration to derive the mathematical relationship between registers and input data bits which are CRC-32 of parallel 16-bits and 32-bits data input, then design function modules according to the input data bits using the same method.
SWITCH is the flag of the state machine, which is used for achieving automatic jumping with different input data bits; DATA signal indicates input data; CHECKSUM signal is CRC-32 code which is calculated from the input data; CRCVALID indicates the final result with a group of data for calculating CRC-32 code.
The data source used for the experiment is 256 bits cycle data which begins with C0844D7F and ends with AAAAAAAAAAAA.
Reduction in time period of 64-bits parallel input makes the mathematical relationship more complex and relatively high consumption of resource correspondingly.