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Online since: March 2016
Authors: Miriam Kupková, Monika Hrubovčáková, Martin Kupka
The higher the porosity of a bar was, the higher relative reduction in bending stiffness the bar exhibited.
This contribution seeks to provide preliminary data on how the exposure to Hank’s solution affects the bending stiffness of bars from sintered Fe-Mn alloys.
Considering a material with a moderate porosity, the solid skeleton of which undergoes uniform corrosion at a rate no higher than a few hundreds of microns per year, and using Eq. 3 and Eq. 1, the following relation for the rate of reduction in the bending stiffness (Eq. 3) can be found (4) Here S is the real surface area of the sintered sample per unit exterior-geometric-surface area, Rcorr is the corrosion rate of the solid skeleton and A is the cross-sectional area of the bar.
According to Eq. 4, a higher porosity and less noble solid skeleton accelerate the reduction in bending stiffness of a bar.
Online since: December 2016
Authors: H. Hamasaki, Fusahito Yoshida, Yuya Ishimaru, Kazuo Okamura, Toshiya Suzuki
The effects of anisotropic yield functions on local reduction of thickness are evaluated.
In this Part-II, we numerically simulate the deformation of HSS sheet in circular hole expansion and evaluate the effect of anisotropic yield functions on the local reduction of thickness in HSS sheet.
In a condition of stress ratio σx:σy = 1:2 for JSH780R, the data wasn’t obtained because a fracture occurred even in the case of the plastic strain of 0.2%.
However in detail viewing, Hill48 predicted relatively less reduction of thickness in R.D.
Online since: April 2005
Authors: C. Faldini, A. Moroni, S. Giannini, F. Vannini, F. Pegreffi, A. Hoang-Kim
Results: There were no differences in patient age, fracture type, BMD, ASA, hospital stay and reduction quality.
Patient data also included operative time, postoperative complications, number of blood transfusions, level of pain (assessed by a visual analog scale, on the fifth postoperative day) and length of hospital stay.
In Group A, the reduction over time in the femoral neck-shaft angle was 6 ± 8, while in Group B, the reduction was 2 ± 1 (p < 0.002).
The reduction was well-maintained
Online since: May 2014
Authors: Jian Wei Wang, Kai Chang, Xiang Lei Yu
When the factory bound and noise-sensitive structures distance less than 1 m, indoor plant boundary environmental noise measurement noise sensitive buildings should be in, and the corresponding reduction of noise emission limits 10dB (A) as a basis for evaluation.
Factory premises equipment generally more and azimuth, working time, there is uncertainty in the open, therefore, in order to obtain scientific, high accuracy data, you need to choose a reasonable period of time to ensure that all measuring devices may generate noise are in the open state, and recorded under the orientation of the device.
Figure 2 Factories and noise distribution factory out environmental assessment point pressure data.
Table 1 Environmental assessment point total sound pressure level table Noise source code 1 2 3 4 5 6 7 8 A-weighted sound pressure level (dB) 82 80 92 89 84 90 88 87 factory out environmental assessment point sound intensity data Figure 3 Factory 1 sound intensity figure out station (a) is on the left side of the measuring point area(b) is the lateral area measuring point(c) is a point on the right side area Figure 4 Measuring points 2 test area map Figure 5 Sound intensity measuring point 2 on the left side of the area chart Note: white column represents the sound intensity value is +, gray column represents the sound intensity value is Figure 6 Side area measuring point 2 sound intensity diagram Figure 7 Right area measuring point 2 sound intensity diagram The factory sound pressure level data Table 3 Qt all sound source within the octave of sound pressure level table Noise octave sound pressure level (dB) Noise source center frequency (Hz) 31.5 63 125 250 500
The technology of the sound pressure and sound intensity combination to identify environmental noise source can accurately identify the produce noise at boundary of the main sound source, which can be targeted to noise reduction of noise source, avoid troubleshooting each noise source noise reduction, which can save a lot of manpower, material and financial resources and has great application prospect.
Online since: September 2014
Authors: Wei Xing Zhu, Jia Li Chen, Yi Zheng Guo
Next, LLE (Locally Linear Embedding) algorithm is adopted to reduce the data dimension.
Its target is to find low-dimensional manifold structure embedded in high-dimensional data and give an effective low-dimensional representation.
A significant characteristic of LLE is to keep the locality of data, so it can be used for cluster analysis and pattern recognition.
Then if without dimensionality reduction on data, the classification results obtained by different kernel functions are shown in table 1.
Figure 3.Recognition rates with different dimensions However, high dimensions will increase the difficulty of data processing, so feature data should be optimized before SVM.
Online since: October 2012
Authors: Li Min Sun, Xue Lian Li
The health monitoring system had collected a large amount of data since it was started for service in Sep 2006 and these data provided important basis for implementing correlation and structure state analysis[2].
The regression model and scatter diagram after rejecting the abnormal data is shown in Fig. 5.
In local section, the displacement deviations of the model output and actual data is much larger, such as the data in December.
Then when the displacement data monitored exceeds these two boundaries after calculation, give an alarm.
Still adopt 10 minute displacement average data wiped out abnormal data in 2007 for accumulative displacement regression model analysis, and the sample size is 35568.
Online since: April 2009
Authors: Thomas J. Webster, Sirinrath Sirivisoot, Rajesh A. Pareta
AFM analysis Although SEM analysis (data not shown) indicated that the PPy-drug coated on Ti samples possessed a smooth PPy film coating, AFM at high magnificantion showed significant nanoroughness of the PPy thin films (Fig 3).
In the curve fitting of C 1s, C-F was found on PPy[Dex]-Ti (data not shown); thus may indicate a small amount of Dex within PPy membranes.
Both oxidation and reduction, which preserve the electroactivity of PPy membranes, can be observed within the first 5 cycles of CV.
However, only the reduction peak was observed after 5 cycles, due to the irreversible release of the anionic P/S molecules.
After 25 cycles, the reduction peak was not observed, as shown in Fig. 5 (a).
Online since: August 2015
Authors: K. Rajkumar, P. Saravanamuthukumar, S. Javed Syed Ibrahim, Lakshmanan Poovazhgan, S. Santosh
Particle size reduction of B4C is found to have positive impact on the material hardness.
From all these data, particle size reduction of B4C is found to have positive impact on the material hardness.
Therefore, the reduction of the reinforcement size to nano-level has permitted hardening without sacrificing the machinability (when machined by abrasive assisted ECM).
But this approach of hardening (reduction of reinforcement size) seems to be different and is preferable over other approaches.
Online since: May 2011
Authors: Li Ping Feng, Zheng Tang Liu, Qi Jun Liu, Hao Tian
From the calculated band structure and density of states, the bandgap reduction is observed due to the presence of the N-2p states in the top of valence bands, which leads to red-shift.
The obtained equilibrium structures are a=5.7898 Å, b=5.9118 Å, c=8.2399 Å and α=β=γ=90°, coinciding with the calculated values (a=5.6887 Å, b=5.7016 Å, c=8.0455 Å [15]) and experiments data (a=5.7516(6) Å, b=5.7646(5) Å, c=8.1344(9) Å [6], a=5.79 Å, b=5.85 Å, c=8.24 Å [7]).
The calculated band gap of the N-doped orthorhombic SrHfO3 is 3.08 eV, which is smaller than the calculated value 4.13 eV [14] (undoped) and experimental data of 6.1 eV (undoped) [3].
This is attributed to the following two reasons: (1) compared with experimental data, the small band gap is ascribed the well-known underestimation of conduction band state energies in ab initio calculations which are performed within DFT; (2) compared with the calculated values, the relativelly small band gap is ascribed the presence of the N-2p energy level in the top of the valence bands shown in Fig. 2 and Fig. 3.
It can be seen that a bandgap reduction is obvious, which indicates a red shift of the optical absorption edge of N-doped orthorhombic SrHfO3 used for lower energy absorption applications.
Online since: August 2013
Authors: Guo Hai Xiong, Xin Yun Liu
Reduction of Glitch Interference in FPGA Design Guohai Xiong1,a, Xinyun Liu 2,b 1.
Design of circuit through using Gray code Gray code is characterized in that only one number between any two adjacent codes is different, which is helpful for code conversion and transmission, and reduction of fuzzy shape in the circuit from one state to the next state with very strong anti-interference ability.
If the glitch doesn’t satisfy the setup of data and hold time, it will not do harm to the system.
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