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Online since: September 2016
Authors: Yuriy Yu. Drozdov, Aleksandr Karakulov, N.V. Gusev, N.Y. Nikonova
Electrophysical characteristics of ceramic materials made of aluminium oxide (Al2O3), silicon carbide (SiC), aluminium nitride (AlN) and beryllium oxide (BeO) according to the data of the Russian and foreign literature [1].
After holding, the electric power supply of the press was switched off; lowering of the temperature with a subsequent reduction of the pressing pressure up to the level of 5 MPa took place.
Owing to a considerable reduction in porosity, there is an increase in heat conductivity of samples.
In this connection from the obtained experimental data, it is visible that the amount of the modifying additive does not always lead to a significant reduction of porosity.
Micrographs of the structure of AlN ceramics Conclusions On the basis of the presented data it is possible to make several conclusions: - First, there is an explicit positive effect of introduction of the modifying additive into the composition on heat-conductive properties of aluminium-nitride ceramics, which consists in creation of dense indissoluble intergranular boundaries (Fig. 5, AlN–90%+Li2O3–7%+Y2O3–3%).
Online since: March 2014
Authors: Ribelito F. Torregosa, Wei Ping Hu
The standard also requires that the risk assessment be updated when new data are obtained for the EIFS.
To conduct a PRA, typically four sets of input data are needed.
The other two sets of input data (i.e., stress exceedance and fracture toughness distribution) are of lesser concern for some types of aircraft due to the abundance of data and their relatively lower influence on analysis results.
At the start of a PRA of fracture, an estimated EIFS distribution is derived using the available teardown crack data which could be historical data or data from another source.
Many aircraft types will not have teardown data, which makes the updating more valuable.
Online since: June 2005
Authors: In Sub Han, Sang Kuk Woo, Doo Won Seo, Kee Sung Lee
The results indicate that hot corrosive gas mainly causes the strength reduction because of the degradation of grain boundary region.
Data points are means and standard deviations of a minimum of five specimens.
Data points are the average value of 10 data.
Figure 6 plots the strength data as a function of holding time for hot corrosion tests, at 900oC in the mixed gas as indicated in Table 1.
The solid line is a fit to the data sets, indicating no change of the slope of dynamic fatigue after hot corrosion test.
Online since: October 2010
Authors: Kevin H. Hoos, Ming Yung Chen, Cheng Gang Chen
Based on the rule-of-mixture, there was a very small difference in the experimental and calculated data.
The data of the experimental CTE (3rd segment) in the glass state is shown in Fig. 2.
The experimental data and the prediction from the rule of mixture are shown in Fig. 2.
The experimental data was significantly lower than those based on the rule of mixture.
Although the value based on Schapery’s lower limit is significantly lower than the experimental data, the value from Schapery’s upper limit is a relatively good prediction of the CTEs for ZrW2O8/Matrimid 5292 hybrid.
Online since: March 2013
Authors: Yu Li
Technical analysis: In order to keep the color reduction rate, use and actual collection color data and finishing color stereo comprehensive analysis, using a digital color measurement instrument, PANTONG color traditional color measurement and modern color measurement two kinds of forms to along the river development zone, and Yuanbao zone for color measurement, prospecting scene, investigation.
Strict requirements color measurement time, place, and timing, to ensure the reliability of the chromatographic data extraction.
Along the river development zone investigation analysis and investigation to the primary chromatography extraction The study goal is building status of the main color, auxiliary color, environmental color RGB values, and color reduction after the RGB value.
Hue relatively simple, easy to harmonic. 4 Conclusions Research for urban management department to make and regulate the use of local chromatography provides reference way and the method, the use of color measurement instrument auxiliary pantone expansion digital color database experimental research, compared with the traditional way method can more accurate in reduction field exploration, collecting relevant color data, for the establishment of the database to provide technical support.
Online since: May 2014
Authors: Fei Liu
The Research on Key Issues of Analysis of Basketball Vedio Fei Liu1, a 1 University of Electronic Science and Technology of China ,China a liufeiliuzhi@163.com Keywords: Sport video analysis, Shot segmentation, Shot coarse classification, Location of scoreboard Abstract: With the advent of multimedia technology and the information superhighway, storage and transmission of digital video is no longer a difficult job, different sports events directly led to the explosive growth of sports video data and therefore efficient sports video analysis is necessary.
Quantification and HSV Color Space Dimensionality Reduction.
HSV Histogram-based Dimension Reduction Shot Segmentation Algorithm.
Conclusions With the massive growth of sports video data, sports video analysis of urgency is growing.
Online since: February 2011
Authors: Taghi Tabarsa, Marzieh Ganji
Data collected based on factorial design and using SPSS software were analyzed.
Introduction Reduction of big diameter trees in natural forests caused plywood industry to reduce their capacities and some of them forced to stop production.
Adding tannin to PF resin causes considerable reduction (40%) in thickness swelling of all experimental panels while thickness swelling of control panels and panels made using 10% tannin and pressed at 150 Co were high (around 6%).
There is a relationship between increased addition of tannin and reduction in bond strength properties.
Online since: October 2011
Authors: Wen Yong Liu, Xiao Liang Xu, Yong Ye An
This essay is the subject of national eleventh five support schemes: The analysis of key technology on emission reduction and comprehension utilization of solid waste from large iron ore mine (Number:2008BAB32B14).
Introduction This essay is the subject of national eleventh five support schemes: The analysis of key technology on emission reduction and comprehension utilization of solid waste from large iron ore mine (Number:2008BAB32B14).
The size distribution data of iron tailings refer to Table 2 .
Table 6 The working performance of sprayed concrete with iron tailings Sample number Sprayed concrete slump (mm) Initial setting time (min) Rate of resilience (%) 1 70 26 <35 2 130 45 <10 3 115 44 <5 4 70 40 <5 5 95 20 <5 6 70 42 <10 The data in Table 6 indicates that value of sprayed concrete sample slump is less than 130mm and below standard 160 mm, the initial setting time range is in 20 to 45 minutes,the rate of resilience less than 40%.
Test data in Table 5 showed that the the performance of sprayed concrete with iron tailings was better than that of sprayed concrete with natural sand.
Online since: January 2012
Authors: Azdiar Gazder, Sujoy S. Hazra, Elena V. Pereloma
Ti-stabilised interstitial free (IF) steel initially subjected to 8 passes, route BC equal channel angular pressing (ECAP) was further cold rolled (CR) at room temperature to 95% thickness reduction.
On the other hand, the additionally CR material shows continuous recrystallisation accompanied by a reduction in the HAGB fraction.
The ECAP billets were then cold rolled (CR) along the extrusion direction for up to 95% thickness reduction.
For micro-texture, orientation distribution function (ODF) sections were calculated using Bunge’s notation after exporting EBSD data to MTex [13].
Online since: June 2008
Authors: Hugo Aguas, Elvira Fortunato, Isabel Ferreira, Rodrigo Martins, R. Prabakaran, Luís Pereira, E. Elangovan
The total area of Si-Hx related bands appeared from Fig. 2(b) and (c) (as a representative figure of all fitted data) are enhanced by a factor of ~1.45 and 2.43 after a-Si:H coating on 5 and 40 mA/cm 2 PS.
Any imperfections or disorder in the crystalline specimens invariably results in such a reduction.
The logarithm of peak-to-peak (pp) height of third joint density of states (3JDOS) at E1 shows a systematic reduction as a function of current density (see Fig. 3 inset) [8,9].
It may be noted in Table 1 (layer 3) that with the thickness reduction [from 77(9) to 50.2(7) nm], there is also a substantial reduction in the void fraction [from 97.13 to 35.2] hence the actual quantity of SiO2 is not reflected by the thickness alone.
Hence, the quantity of a-SiO2 is actually increasing with current density as evident from FTIR data.
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