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Online since: October 2010
Authors: Pei Kang Bai, Yu Xin Li
For nylon powder grain, the best spreading thickness is 0.15mm.
It can be found that a great number of small inorganic fillers are abnormally distributed around the big nylon particles, because the particle size of inorganic fillers is small, which makes the specific surface area of powder materials increase, leading to the increasing of the contact area between particles and substrates.
It can be found that a great number of small inorganic fillers are abnormally distributed around the big nylon particles, because the particle size of inorganic fillers is small, which makes the specific surface area of powder materials increase, leading to the increasing of the contact area between particles and substrates.
Online since: May 2012
Authors: M.S. Awan, Ashari Maqsood, Mariam Ansari, Zeb Un Nisa Mughal, Muhammad Anis-ur-Rehman
The electrical and thermal properties of the ferrites depend on preparation method, chemical composition and grain size, frequency and temperature [2].
The precipitates were thoroughly washed a number of times with distilled water.
The precipitates were thoroughly washed a number of times with distilled water.
Online since: January 2012
Authors: Jun Jie Sun, Zhan Xia Di, Zhi Guo Luo, Li Hao Han, Xiao Lei
In the experiment, the paraffin and the corn grain with the diameter 3 mm are respectively used to simulate DRI, coke and lump coal.
Similarly, the blast volume of model is calculated by using the Froude number[5,6].
Similarly, the blast volume of model is calculated by using the Froude number[5,6].
Online since: January 2015
Authors: Xiu Juan Fan, Li Yuan Liu
Histogram equalization is for nonlinear tensile, redistribution image pixel values, the number of pixel gray level range about the same.
If the image has a horizontal grain, the COR in the horizontal direction matrix of COR value will be greater than the rest of the matrix.
If the image has a horizontal grain, the COR in the horizontal direction matrix of COR value will be greater than the rest of the matrix.
Online since: January 2022
Authors: Aleksandr S. Binchurov, Yuri Gordeev, Vladimir Kuleshov, Andrew Dvoryansky, Alexei Gribanov, O. V. Kuleshova
The following parameters of cutting modes were taken as independent variables: fn – longitudinal feed of the cutter per revolution of the processed shaft, 0.08…1.2 mm/rev; faz - azimuthal feed circular feed of a workpiece, m/min; nr – number of revolutions of the workpiece, 12.5…630 rpm; nb – revolutions of the tool, 6000…18000 rpm; amf – cutting depth, 0.1…0.9 mm.
Influence of Additives of Nanoparticles on Structure Formation of Fine-Grained Hard metals.
Influence of Additives of Nanoparticles on Structure Formation of Fine-Grained Hard metals.
Online since: December 2010
Authors: You Yin, Sumio Hosaka, Takashi Akahane, Miftakhul Huda
In order to further increase the density above 500 Gbit/in2, some technical problems must be solved, such as the effects of thermal fluctuation, which become more and more serious with decreasing magnetic grain size.
Based on these two of basic patterns, we also designed a series of patterns with different pitches, line intervals and numbers of post rows.
Based on these two of basic patterns, we also designed a series of patterns with different pitches, line intervals and numbers of post rows.
Online since: October 2011
Authors: Qi Min Zhang, Jun Lian He, Min Yang, Jun Li
It can be known from Figure that the main crystals included in two kinds of residual liquid are of the identical types and are of normal constitutive paraffin, namely, coarse grain paraffin, the molecular formula is described as (CH2)x.
DL4 Single Deoiling Spectrogram Single Deoiling Spectrogram after touches for two times Fig. 3 X Diffraction Spectrogram for DK4 Single Deoiling as well as Distilled Residual Liquid after Single Deoiling for two times Table 2 The interplanar crystal spacing and variation condition parameters The single deoiling distilled residual liquid The distilled residual liquid after 2 –time touches interplanar crystal spacing/nm 4.1490 4.1554 variation condition/% 10.5 21.6 4.Phase State Simulation on Paraffin Deposition Mechanism The Winprop phase state in the CMG numerical simulation software can be employed to analyze the module and the characterization method of crude oil can be employed to perform the characterization analysis for C11+ , the corresponding extension can be employed until C20+ for carbon number.
DL4 Single Deoiling Spectrogram Single Deoiling Spectrogram after touches for two times Fig. 3 X Diffraction Spectrogram for DK4 Single Deoiling as well as Distilled Residual Liquid after Single Deoiling for two times Table 2 The interplanar crystal spacing and variation condition parameters The single deoiling distilled residual liquid The distilled residual liquid after 2 –time touches interplanar crystal spacing/nm 4.1490 4.1554 variation condition/% 10.5 21.6 4.Phase State Simulation on Paraffin Deposition Mechanism The Winprop phase state in the CMG numerical simulation software can be employed to analyze the module and the characterization method of crude oil can be employed to perform the characterization analysis for C11+ , the corresponding extension can be employed until C20+ for carbon number.
Online since: September 2013
Authors: Feng Shen, Zhou Wu, Nan Wang, Yong Ming Li
Near-wellbore friction
According to Micheal theory, perforation friction calculation formula is as follow:
(3)
Where ρ is fracturing fluid density, g/cm3; Q is delivery rate, m3/min; np is the number of perforation; dp is perforation diameter, m; cp is eyehole flow coefficient.
The force analysis of single proppant in stationary flow is expressed as: (13) Where FS, Wb and Fh are respectively defined as stokes resistance, effective gravity and grain of interference force.
The force analysis of single proppant in stationary flow is expressed as: (13) Where FS, Wb and Fh are respectively defined as stokes resistance, effective gravity and grain of interference force.
Online since: February 2014
Authors: Yuan Chao Deng, Yuan Hui Qu
Currently widely used method is to transform it into a sphere particles diameter, namely particle size: experiments in order to avoid the seeds is too small and blocking suction hole, samples for the primary screening, screening of grain diameter less than 1.5 mm, then randomly selected from 200, the third axis is measured with vernier caliper, accuracy of 0.01 mm, the probability distribution as shown in figure [1], it can be seen that three axis frequency similar to normal distribution.
Figure [2] Suction nozzle flow field in the geometric model Table [1] Geometry size and fluid properties geometry The parameter value Fluid properties The parameter value Import cone large (small) size 0.03(0.006) density 1.2 Imported high 0.01 viscosity 1.5x Excessive zone height 0.002m Outlet pressure 0Pa Exit diameter 0.001m Inlet pressure 5KPa/10KPa/20KPa/30KPa/40KPa Export highly 0.006m Reynolds number Re 1~20x 3.1.2 Mesh to the model In the grid, in order to get more tidy, regular grid, the geometric model is divided into three parts, the upper part is divided into a rectangle, the middle is a transition area, the following is an isosceles trapezoid.
Figure [2] Suction nozzle flow field in the geometric model Table [1] Geometry size and fluid properties geometry The parameter value Fluid properties The parameter value Import cone large (small) size 0.03(0.006) density 1.2 Imported high 0.01 viscosity 1.5x Excessive zone height 0.002m Outlet pressure 0Pa Exit diameter 0.001m Inlet pressure 5KPa/10KPa/20KPa/30KPa/40KPa Export highly 0.006m Reynolds number Re 1~20x 3.1.2 Mesh to the model In the grid, in order to get more tidy, regular grid, the geometric model is divided into three parts, the upper part is divided into a rectangle, the middle is a transition area, the following is an isosceles trapezoid.