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Online since: July 2011
Authors: Shu Hui Zhang, Zhi Qiang Kang, Qing Lü, Jie Li, Xiao Jie Liu
Electroconductive Si3N4–TiN ceramic was fabricated by pressureless sintering from the chief materials containing high titanium slag and Si3N4 powder synthesized by carbonthermal reduction nitridation method using iron ore tailing as raw materials.
In the previous work, Si3N4 powders were prepared from iron ore tailings containing high SiO2 content by carbothermal reduction and nitridation method [6].
Table 1 Performance data of various ceramics from different references Ceramics Volume density /g·cm-3 Vickers hardness /GPa Flexure strength /Mpa Room electrical resistivity /·cm Materials and fabrication methods Si3N4–TiN in this paper 2.79 8.23 66 7.1×10-2 Iron ore tailing, high titanium slag,Y2O3,Al2O3, pressureless sintering TiN/ O′- Sialon[11] 3.1 9.2 169 1.8×10-2 High titanium slag, pressureless sintering Si3N4[12] 3.21 1.1×1014 Pure Si3N4 powder TiN[12] 5.44 21G 0.25×10-4 Pure TiN powder Ti2AlN- TiN[13] 8.57 Ti ,Al and TiN powder, HPS Al2TiO5- Si3N4[14] 2.77 45.34 Si3N4, Al2O3, TiO2 and SiO2 powders, reaction sintering method Si3N4 matrix ceramic[15] 94.3 Si, BN and SiO2 powders, reaction sintering method Table 1 shows the structure property, mechanical property, and room electricapability data of various ceramic materials fabricated by different raw material or different process from several references.
The above data illustrate that Si3N4-TiN obtained in this paper has good performaces.
Online since: July 2014
Authors: S. Senthilvelan, R. Kalidasan, M. Yatin, D.K. Sarma
This behaviour is due to the machining of front cutting tool preheat as well as reduction of effective cutting speed while machining with rear cutting tool.
The signals from each dynamometer is combined with the help of junction box, through which the signal is acquired by Data Acquisition Card, connected to a computer, which enables online monitoring and storing of the cutting force data.
Infrared camera (INFRATEC, Modline 5 series) capable of measuring temperatures in range of - 40oC to 2000oC was used to simultaneously record the temperatures with a data acquisition rate of 8 frames per second.
Additionally, a diameter reduction takes place due to the cutting action of the front cutting tool and this leads to reduced cutting speed of rear cutting tool.
Online since: November 2016
Authors: Priscilla Gloria Lorraine Baker, Emmanuel Iheanyichukwu Iwuoha, Rachel Fanelwa Ajayi, Samantha F. Douman, Ezo Nxusani, Anovuyo Jonnas
The dissociation constant, KI, value evaluated from Dixon analysis of the paroxetine modulation data was estimated to be -0.02 µM while Cornish-Bowden analysis confirmed the competitive inhibitory characteristics of the enzyme.
Dixon plot is a graphical presentation of the enzyme‐kinetic data by which a Michaelis constant (KMapp) or the dissociation constant, (KI), may be determined.
Representing the same inhibition data by Cornish-Bowden plot (Fig. 9.) finally establishes that competitive inhibition occurred in this study [51-57].
The data obtained was used to plot a Lineweaver-Burk Plot for the enzymatic reaction as shown in Fig. 11.
The data received from these experiments indicated that the current response only decreased by 5% suggesting that the biosensor reported for this work has a long-term stability.
Online since: June 2011
Authors: Matsunori Nara
However, enough inventory data doesn't exist to do LCA of the infrastructure.
There are covering and a list in data because the data of each section that classifies the productive activity of the entire Japan from this inter-industry relations table is calculated.
Moreover, the latest data can be reflected in this environmental impact information at any time.
That is, the data of the inter-industry relations table can be used when there is no data of the buildup method.
iii) Necessity of proof of display by proof data etc.
Online since: September 2013
Authors: Jong Deok Kim, Young Moo Heo, Si Tae Won
Recently, many studies on the weight reduction of automobile for fuel saving were underway.
Especially, researches on weight reduction of automobiles wherein strength of components and functional factors are satisfied while weight is decreased are very active.
Fig. 6 Fine blanked samples and shear surface from the experiments (clearance: 0.015mm) Fig. 7 Fine blanked samples and shear surface from the experiments (clearance: 0.1mm) Fig. 8 Fine blanked samples and shear surface from the experiments (clearance: 0.2mm) Fig. 9 Measurement results of bulging height on the inner corner shapes Fig. 9 shows the data of measured results.
Online since: March 2016
Authors: Ming Wen, Jun Bi, Yue Sheng, Zhi Long Tan, Jun Min Zhang, Chuan Jun Wang, Wei Yi, Ze Na Xin, Wei Ming Guan
Finally, RuO2 was changed to Ru by hydrogen reduction method.
Lu F. et al [14] synthesized the chain-like Ru nanoparticle array by liquid chemical reduction process.
The (NH4)2RuCl6 powder was, then, ignited in air at 500 oC for 6 h (1st step ignition) followed by reduction in hydrogen at 600 oC for 6 h with final ignition at 900 oC for 2 h and subsequent cooling under hydrogen (2nd step ignition).
However, it should be noted that (NH4)2RuCl6 is not listed in the International Centre for Diffraction Data (formerly Joint Committee on Powder Diffraction Standards JCPDS 7-240 database)[16].
Online since: October 2013
Authors: Dirk Merten, Sabine Willscher, Daniel Mirgorodsky, Delphine Ollivier, Lukasz Jablonski, Juliane Wittig, Georg Büchel, Peter Werner
In lysimeter experiments it was confirmed, that the different soil improvement strategies, addition of MS and of calcareous top soil (MIX) resulted in a reduction of the concentration of contaminants in the seepage water, as well as of the seepage water rates and loads, thus decreasing the risk of groundwater contamination.
Temporal changes in the bioavailable fraction of U (Ubio, mobile + specifically adsorbed) from May 2009 – August 2011 in the untreated and unplanted soil (C, control) and in the microbial amended soil (mycorrhiza + streptomyces, MS) In further lysimeter experiments it could be confirmed, that the different soil amendment strategies, addition of MS and of calcareous top soil (MIX) resulted in a reduction of the concentration of contaminants in the seepage water, as well as of the seepage water rates and loads, thus decreasing the risk of groundwater contamination.
As a result of these experiments, homogeniziation of the in situ undisturbed contaminated substrate, lowering of seepage water rates by plants as well as reduction of HM/R loads by soil amendments (MS, MIX) result in an evident minimization of HM/R output by seepage water into the groundwater, thus decreasing the risk of groundwater contamination.
In fermentation experiments, an ethanol yield of 9.0 l/ 100 kg raw material was achieved, which fits well the data for industrial standard fermentation (7-9 l/ 100 kg raw material [5]).
Online since: November 2011
Authors: Bo Huang, Ming Zhong
Furthermore, a fuzzy system was designed for sensor data fusion so as to achieve accurate navigation.
Furthermore, a fuzzy system was designed for sensor data fusion to achieve accurate navigation.
The module gets data of MEMS gyro via SPI serial BUS, and obtains information of encoder via interior counter, and communicates with IMU via RS-232 serial BUS.
It is unnecessary to get all previous data for estimation in this method; it just needs the latest observation data to estimate the current signal value, which is less-computed and better real-time.
Based on the system set up above, the fuzzification process was carried out including data fuzziness and fuzzy functions determination.
Online since: February 2019
Authors: Sergey O. Nepryakhin, Arkady M. Mikhailenko, Danil L. Shvarts
After such preparatory actions all the initial information about the geometry of the strip and the groove necessary for computer calculation can be represented in the form of one one-dimensional and two two-dimensional data arrays.
A one-dimensional array should include the following data: distance from the axis of the top roll to the origin (in the drawing of the groove R'); interaxle distance of rollers D for this rolling stand; the number of node points of the skeletons of contours for the workpiece Nз and the groove Nk; the coordinates of the origin of the workpiece in the coordinate system of the yk and zk groove, determined, for example, by the position of the in-coming roller guide of the rolling stand.
We define the equations of these segments and the limits of their applicability from the data available in the arrays described above.
With this division, in sectors of type 4, the strip is directly compressed by rollers, and in sectors of types 1-3, there is no direct reduction of the strip by rollers.
- Extraction - reduction of the SCS area due to its reduction by rolls and the movement of a part of this metal in the direction of the 0X axis.
Online since: January 2016
Authors: Tomas Funtik, Marek Ďubek, Jan Erdelyi
Data logging for dimensional accuracy.
TLS is a non-selective method of spatial data acquisition (Fig. 2).
According to the instrument used for the scanning, the accuracy of TIN model is up to 2 mm for smooth surfaces (some instrument allows to repeat the measurement of discrete points several times, what leads to data noise reduction).
The technology of Terrestrial Laser Scanning (TLS) is suitable for this purpose allowing efficient data collection and therefore post processing of this data set.
Data logging for dimensional accuracy
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