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Online since: April 2014
Authors: Wei Feng He, Yong Zhi Chen, Peng Wu, Yu Hui Yang, Jing Ye
The low concentration of water is not enough to cause a large number of the reaction occurs.
In wet grinding, drying and sieving, Tungsten carbide mixture gathered a large number of oxygen (usually in oxide form).
Research on the phenomena of grain growth WC-Co cemented carbide during sintering.
In wet grinding, drying and sieving, Tungsten carbide mixture gathered a large number of oxygen (usually in oxide form).
Research on the phenomena of grain growth WC-Co cemented carbide during sintering.
Online since: October 2014
Authors: Nuriziani Hussin, Dina Maizana, Emi Zurima Bt Ismail
This transformer consists of 254 turns for both primary and secondary winding. 3% SiFe Cold Rolled Grain Oriented, (CRGO) M5 is used as core lamination and total number of layer is 36.
The equation used to get the input voltage is shows below: V = 4.44 x B x N x f x A (2) Where: V = Voltage, 4.44 = Constant, B = Flux density (Tesla), N = Number of winding turn = 254 turns, f = Frequency = 50 Hz Fig. 5: The experiment setup for T – joint and corner joint measurement (single line diagram) Oscilloscope Jumper board Ammeter Search coil 3 phase transformer AC variable voltage Power Analyzer Fig. 6: The real experiment setup for T – joint and corner joint measurement Fig.6 shows the real experiment setup for T – joint and corner joint measurement.
The equation used to get the input voltage is shows below: V = 4.44 x B x N x f x A (2) Where: V = Voltage, 4.44 = Constant, B = Flux density (Tesla), N = Number of winding turn = 254 turns, f = Frequency = 50 Hz Fig. 5: The experiment setup for T – joint and corner joint measurement (single line diagram) Oscilloscope Jumper board Ammeter Search coil 3 phase transformer AC variable voltage Power Analyzer Fig. 6: The real experiment setup for T – joint and corner joint measurement Fig.6 shows the real experiment setup for T – joint and corner joint measurement.
Online since: November 2007
Authors: Günter Ziegler, Helmar Mayr, Rainer Detsch, Daniel Seitz
Because RAW cells possess a higher proliferation capacity than ST-2
cells, the best relation of cell numbers of ST-2 and RAW 264.7 turned out to be 100:1.
With this ratio of cell numbers, four different experiments on hydroxyapatite ceramic surfaces were carried out.
At higher magnification, filopodia, attached to the HA grains exposed by resorption, can be seen (Fig. 4B).
With this ratio of cell numbers, four different experiments on hydroxyapatite ceramic surfaces were carried out.
At higher magnification, filopodia, attached to the HA grains exposed by resorption, can be seen (Fig. 4B).
Online since: October 2013
Authors: Bo Chen, Ze Hu, Liang Ge, Jun Lan Li
Each collection module is responsible for collecting tens to hundreds, even thousands of housing temperature data, but the specifically the number, depending on the built environment and specific circumstances.
The figure above shows a virtual design, increasing or reducing the number depend on practical environment in practical.
[2] Donghui Sun, Ruixue Cui, Lihua Xu, The Research of Monitor System for Grain Situation Based on Zigbee Wireless Sensor Network, Proceeding of the 18th International Symposium on Test and Measurement (Volume 4), 2009
The figure above shows a virtual design, increasing or reducing the number depend on practical environment in practical.
[2] Donghui Sun, Ruixue Cui, Lihua Xu, The Research of Monitor System for Grain Situation Based on Zigbee Wireless Sensor Network, Proceeding of the 18th International Symposium on Test and Measurement (Volume 4), 2009
Online since: May 2018
Authors: Ke Xun Li, Bi Cheng Zhou, Dong Hong Wang, Kun Jia, Miao Jie Qiao, Jiang Jiang Ma, Jie Zhang
TEM measurements confirmed the hollow structure of the porous carbon and its composition, which is composed of a great quantity of crystalline grains with size about from 20nm to 40nm as shown in Fig. 2.
As shown in Fig. 4, the first charge-discharge curve after preparation of Li ion batteries at the current density of 100mAh·g-1 is approximately linear and the specific capacitance decreased with the increase of cycle number, but the specific capacitance of the porous carbon and its composites can be obviously improved by the doping composite.
Fig. 4 The charge-discharge curve of the first cycle and the curve of specific capacity at different cycle numbers (1the sweet potato dried by freeze-drying; 2 the sweet potato dried by freeze-drying dipped with TBOT; 3, 4 the leaves and stems of coriander dried by freeze-drying ) Fig. 5 X-ray diffraction patterns of the sample carbon/TiO2 composition and carbon/SiO2 by RAPET The crystal structures were determined on a Bruker D8 powder X-ray diffractometer (Cu Kα=1.540598Ả).
As shown in Fig. 4, the first charge-discharge curve after preparation of Li ion batteries at the current density of 100mAh·g-1 is approximately linear and the specific capacitance decreased with the increase of cycle number, but the specific capacitance of the porous carbon and its composites can be obviously improved by the doping composite.
Fig. 4 The charge-discharge curve of the first cycle and the curve of specific capacity at different cycle numbers (1the sweet potato dried by freeze-drying; 2 the sweet potato dried by freeze-drying dipped with TBOT; 3, 4 the leaves and stems of coriander dried by freeze-drying ) Fig. 5 X-ray diffraction patterns of the sample carbon/TiO2 composition and carbon/SiO2 by RAPET The crystal structures were determined on a Bruker D8 powder X-ray diffractometer (Cu Kα=1.540598Ả).
Online since: September 2011
Authors: Qiang Li, Dan Yu Jiang, Yin Juan Chen
In addition, glassy phase, an important microstructure in ceramics, can decrease sintering temperature and refine grains.
Table 2 Percentages of Al2O3, SiO2,CaO measured by powder method Content(%) number Al2O3 CaO SiO2 1 1.74 1.82 1.95 2 1.72 1.79 2.01 3 1.76 1.81 1.97 Table 3 Percentages of Al2O3, SiO2, CaO measured by sheet method (a = 1:0.7088) Content(%) number Al2O3 CaO SiO2 1 1.75 1.83 1.97 2 1.71 1.79 1.93 3 1.73 1.81 2.04 Result and Discussion Table 2 and Table 3 are the mass percentages of each component in glassy phase, measured by powder method and sheet method respectively.
Table 2 Percentages of Al2O3, SiO2,CaO measured by powder method Content(%) number Al2O3 CaO SiO2 1 1.74 1.82 1.95 2 1.72 1.79 2.01 3 1.76 1.81 1.97 Table 3 Percentages of Al2O3, SiO2, CaO measured by sheet method (a = 1:0.7088) Content(%) number Al2O3 CaO SiO2 1 1.75 1.83 1.97 2 1.71 1.79 1.93 3 1.73 1.81 2.04 Result and Discussion Table 2 and Table 3 are the mass percentages of each component in glassy phase, measured by powder method and sheet method respectively.
Online since: February 2011
Authors: Jing Zhu, Jing Jing Xu, Zong Ning Chen, Hong Lan Xie, Ti Qiao Xiao, Jun Xu, Tong Min Wang, Ting Ju Li
Liao et al [6,7] reported that PEC can result in the multiplication of the crystal nucleus and grain refinement by making the crystal nucleus on the mould wall fall down and drift in the liquid.
As the disturbance of PEC can decrease the potential barrier of nucleation, increase the number of nucleating sites and shorten incubation time of nucleation, the nucleation rate is improved.
Due to the disturbance of PEC to the liquid alloy, the growing dendrites are broken up to form more nucleus, which increase the number of crystal nucleus and refine the dendrites.
As the disturbance of PEC can decrease the potential barrier of nucleation, increase the number of nucleating sites and shorten incubation time of nucleation, the nucleation rate is improved.
Due to the disturbance of PEC to the liquid alloy, the growing dendrites are broken up to form more nucleus, which increase the number of crystal nucleus and refine the dendrites.
Online since: April 2011
Authors: Zhe An Lu, Jian Xiong Xie
(3) Infiltrating study: quality quartz grain, when the size of quartz sand is bigger, its specific surface area is small, which need less infiltration of resin, when the size of quartz sand is smaller, its specific surface area is bigger, which need more infiltration of resin.
Test Condition: (1) test environment conditions: temperature (23±2) degrees, relative humidity (50±5) (2) sample appearance condition: sample should be flat, bubble-free, flawless, no obvious impurity, processing damage and so on, otherwise, the sample should be null and void, (3) measurement precision of sample size conditions: the size not more than 10mm and accurate to 0.02 mm, the size more than 10mm and accurate to 0.05mm, (4)the condition of the sample number: the effective sample number of each group was not less than five.
Test Condition: (1) test environment conditions: temperature (23±2) degrees, relative humidity (50±5) (2) sample appearance condition: sample should be flat, bubble-free, flawless, no obvious impurity, processing damage and so on, otherwise, the sample should be null and void, (3) measurement precision of sample size conditions: the size not more than 10mm and accurate to 0.02 mm, the size more than 10mm and accurate to 0.05mm, (4)the condition of the sample number: the effective sample number of each group was not less than five.
Online since: November 2013
Authors: Guo Long Chen, Wei Min Zhang, Zhong Chao Qiu, Tian Yu Ren
Studies have shown that the detection method based on the magnetic Barkhausen noise can be widely applied to the magneto-elastic stress testing and microstructure (grain size, metallurgical composition changes) of ferromagnetic specimen and some other areas [3].
The dislocations created at this stage is mainly isolated, and the number of irreversible magnetization processes rises, which increase the RMS value of MBN consequently.
The newly emerging dislocation tangles and cell boundaries increases the number of microscopic pinning sites, which act as obstacles to the movement of domain walls.
The dislocations created at this stage is mainly isolated, and the number of irreversible magnetization processes rises, which increase the RMS value of MBN consequently.
The newly emerging dislocation tangles and cell boundaries increases the number of microscopic pinning sites, which act as obstacles to the movement of domain walls.
Online since: December 2010
Authors: Martina Iskrová, Ondrej Šauša, Barbora Sláviková, Viktor Majerník, Jozef Krištiak
Total number of coincidences in analysed time spectra overreach 1x106 counts.
The time resolution was about 320 ps FWHM (measured by defect free Al sample, 3 Gaussian approximation of resolution function).Source and window correction was taken into account (17.6% of the total number of annihilations).
The tendency to shift this temperature by addition of small amount of small SiO2 grains for acceleration of crystallization increase this temperature to 265 K.
The time resolution was about 320 ps FWHM (measured by defect free Al sample, 3 Gaussian approximation of resolution function).Source and window correction was taken into account (17.6% of the total number of annihilations).
The tendency to shift this temperature by addition of small amount of small SiO2 grains for acceleration of crystallization increase this temperature to 265 K.