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Online since: June 2012
Authors: Li Li Wang, Xiu Feng Wang, Cheng Long Yu, Xin Hao, She Bao Lin, Juan Dong, Hong Tao Jiang, Zheng Guang Zhang
From Fig. 1(a), the platelets are hexagonal shape grains.
Large number of α-Al2O3 platelets is developed at the interface between the glass.
A large number of small particles can be observed on the surface of platelets, further verifying the growth mechanism of Ostwald Ripening mechanism.
Large number of α-Al2O3 platelets is developed at the interface between the glass.
A large number of small particles can be observed on the surface of platelets, further verifying the growth mechanism of Ostwald Ripening mechanism.
Online since: January 2012
Authors: Ju Li, Dao Ping Liu, Ni Liu
Moreover, based on the two-film theory and the crystal theory, Englezos [7] put forward that methane hydrate crystal growth rate is proportional to the supersaturation of methane in the water and surface area of methane hydrate grain.
· Assuming there is a large number of free water in the inside surface of CO2 hydrate film, and CO2 is reacted with free water in the film-water interface, and the spread position is the inner surface of the hydrate film
· In the gas-liquid interface, below the hydrate film is water phase; the heat released by hydration reaction can be directly transferred to the aqueous solution and can be taken away by coolant water, so the heat of the CO2 hydration reaction can be ignored Based on the above assumptions, the growth process of CO2 hydrate in the gas-liquid interface can be simplified that CO2 gas spreads along the axial of the reactor in the inner surface of the "hydrate film" with a large number of free water, and is reacted with the free water, the main reaction front is in the inner surface of porous "hydrate films".
· Assuming there is a large number of free water in the inside surface of CO2 hydrate film, and CO2 is reacted with free water in the film-water interface, and the spread position is the inner surface of the hydrate film
· In the gas-liquid interface, below the hydrate film is water phase; the heat released by hydration reaction can be directly transferred to the aqueous solution and can be taken away by coolant water, so the heat of the CO2 hydration reaction can be ignored Based on the above assumptions, the growth process of CO2 hydrate in the gas-liquid interface can be simplified that CO2 gas spreads along the axial of the reactor in the inner surface of the "hydrate film" with a large number of free water, and is reacted with the free water, the main reaction front is in the inner surface of porous "hydrate films".
Online since: July 2014
Authors: Bao lin Xiong, Jian Ping Xiong
Some scholars who used the PFC3D space structure of the particle accumulation system has carried on the simulation study, using compressible model simulation software PFC3D under the weight of the generated particles stacking system of void fraction and anglicizing the gradation curve, graining size distribution, particle shape, etc.
The discrete element method (DEM) model based on image can simulate the shape of the aggregate particles well, but this model has a great number of units with speed slow.
Aiming at the shortcomings of the above, the future development direction of discrete element should be roughly: Developing the complex shapes of basic particle discrete element and modeling method based on image or X - ray combined with these fundamental particles, should reduce the particles in the model number, improve the operation speed, consider voids in asphalt mixture, water, solid liquid gas three phase interaction with improve the accuracy and reliability of the discrete element numerical simulation.
The discrete element method (DEM) model based on image can simulate the shape of the aggregate particles well, but this model has a great number of units with speed slow.
Aiming at the shortcomings of the above, the future development direction of discrete element should be roughly: Developing the complex shapes of basic particle discrete element and modeling method based on image or X - ray combined with these fundamental particles, should reduce the particles in the model number, improve the operation speed, consider voids in asphalt mixture, water, solid liquid gas three phase interaction with improve the accuracy and reliability of the discrete element numerical simulation.
Online since: August 2011
Authors: Zi Xin Zhu, Dong Chen, Jun Zhong Zheng
The filter core can be washed automatically without disassembling by the pulsating compressed air which blow out from the lumen of the filter core to the wall of the washing bucket forms oscillation air flow.And then, the washing liquid containing a large number of metal debris enter the particle counting system to complete the amount and size distribution analysis of these metal debris.
An in-line laser particle counter is designed based on light-blocking theory and installed in the fluid pipeline which can count continuously and analyze the number and size distribution of the debris.
Abrasive Grain Analysis(in Chinese).
An in-line laser particle counter is designed based on light-blocking theory and installed in the fluid pipeline which can count continuously and analyze the number and size distribution of the debris.
Abrasive Grain Analysis(in Chinese).
Online since: January 2014
Authors: M.F.J. Bione, M.C. Alonso-García, F. Chenlo, M.B.A. Zamorano
In this context of increasing of the number of facilities, manufacturer, innovative technologies, etc., the characterization of photovoltaic modules using methods to ensure their durability, and the analysis of defects that may appear long term is of great interest.
2.
(1) (2) (3) Where: ISC is the experimental short-circuit current; nS is the number of cells in series of the module; m is the ideality factor of the diode (between 1 and 1.2); K is the Boltzmann constant, e the electron charge and T the temperature in Kelvin.
In Fig. 4, the grains in the of Brazil module appear less elongated than those that can be seen on a SiO2 films that has not experienced the process of encapsulation or over time.
(1) (2) (3) Where: ISC is the experimental short-circuit current; nS is the number of cells in series of the module; m is the ideality factor of the diode (between 1 and 1.2); K is the Boltzmann constant, e the electron charge and T the temperature in Kelvin.
In Fig. 4, the grains in the of Brazil module appear less elongated than those that can be seen on a SiO2 films that has not experienced the process of encapsulation or over time.
Online since: May 2012
Authors: Joshua D. Caldwell, Brett A. Hull, Brice Bourgoin, Laurent Lombez, Amaury Delamarre, Marc Verhaegen, Jean Francois Guillemoles
Introduction
Extended defects, such as in-grown and recombination induced stacking faults (SFs), threading screw and edge dislocations, half-loop arrays, and low-angle grain boundaries, among others, continue to limit the commercial viability of SiC devices.
large number of defects within the field of view, minimal or no spectral information is obtained [3, 4].
emission band at 30 meV deeper (~430 nm) was also observed in regions with a large number of overlapping SFs.
large number of defects within the field of view, minimal or no spectral information is obtained [3, 4].
emission band at 30 meV deeper (~430 nm) was also observed in regions with a large number of overlapping SFs.
Online since: May 2014
Authors: Cheng Fen Yuan
Rather, the data are noisy due to outliers and mis-calibrated sensors, incomplete as a result of dropped messages, and coarse-grained in both time and space as devices cannot sample infinitely nor be deployed with complete coverage.
The adapter module has many attributes which are corresponding with the parameters of the read-write hardware, such as port number, baud rate, data bit, parity bit and stopping bit.
The configure Module remote configures the parameters of every read-write server, e.g. configuring the parameters of the adapter in the read-writer server(port number, baud rate, data bit, parity bit, stop bit), configuring such parameters of read-write server as read or write speed(reading times every second),the format of read data and transferred, acceptable order set of read-write server.
The adapter module has many attributes which are corresponding with the parameters of the read-write hardware, such as port number, baud rate, data bit, parity bit and stopping bit.
The configure Module remote configures the parameters of every read-write server, e.g. configuring the parameters of the adapter in the read-writer server(port number, baud rate, data bit, parity bit, stop bit), configuring such parameters of read-write server as read or write speed(reading times every second),the format of read data and transferred, acceptable order set of read-write server.
Online since: October 2012
Authors: Xiao Chen Wang, Fei He, An Min Yin, You Zhao Sun, Quan Yang
According to the ODF defined by Bunge, texture can be expressed by the following equation [14]:
(1)
Where represents the ODF coefficients, also referred as C-coefficients, are the generalized spherical harmonic functions, l is the order of the series, and m and n denote finite numbers of independent C-coefficients at each order.
Theoretically, lmax extends up to infinity, but in practice the lmax usually takes a limited number.
For the random distribution of the material of the grain orientation in space, Polycrystalline diffraction directions in space, forming a series of diffraction cones, each diffraction cone corresponds to all participants in the diffraction of a family of crystal planes.
Theoretically, lmax extends up to infinity, but in practice the lmax usually takes a limited number.
For the random distribution of the material of the grain orientation in space, Polycrystalline diffraction directions in space, forming a series of diffraction cones, each diffraction cone corresponds to all participants in the diffraction of a family of crystal planes.
Online since: August 2014
Authors: Xiao Ping Su
The result of cement particles hydration is to generate a large number of solid hydrate, increase the number of indirect contacts between particles and particles, reduce the gap between particles, the structure tends to close, crystals and gels through the formation of the cohesion between the structure strengthening links between the power of grain enhanced, to harden cement loess and improve the strength of loess and water stability
Loess contains lots of clay particle.
Online since: January 2014
Authors: Guang Ming Li, Wen Zhi He, Jing Cheng Xu, Ying An, Wen Qing Wu, Jing Jing Chen
The KW is rich in sugar, carbohydrate, protein, fat and other nutrients which mainly come from grain, meat, bone, eggs and other animal tissue [5,6].
Acknowledgments The study was supported by Grant of State Science and Technology Support Program (Program number: 2010BAK69B24) and Grant of Shanghai Science and Technology Committee (Program number: 10dz0583201).
Acknowledgments The study was supported by Grant of State Science and Technology Support Program (Program number: 2010BAK69B24) and Grant of Shanghai Science and Technology Committee (Program number: 10dz0583201).