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Online since: November 2017
Authors: Petr Martínek, Jana Míšková, Peter Sláma
This steel grade is alloyed with titanium in order to prevent grain coarsening during forging.
Large numbers of cracks were only found in the induction-hardened regions with patterns where the microstructure consisted of martensite.
By contrast, the largest proportion and number of largest particles was found in the material from supplier 1.
As the most severe grinding problems were encountered in the material from supplier 1, it appears that wheel dulling was most severely affected by the quantity of coarse sharp-edged precipitates, rather than the overall number of precipitates.
Large numbers of cracks were only found in the induction-hardened regions with patterns where the microstructure consisted of martensite.
By contrast, the largest proportion and number of largest particles was found in the material from supplier 1.
As the most severe grinding problems were encountered in the material from supplier 1, it appears that wheel dulling was most severely affected by the quantity of coarse sharp-edged precipitates, rather than the overall number of precipitates.
Online since: July 2014
Authors: Chun Hua Zhang, Yan Zhang, Wei Zhang
From the Angle of storage structure of the texture, texture is actually a storage array of two-dimensional image color information, and grain element is composed of color channel.
According to different color channel number and the way of compression, the texture image can be stored for a variety of formats, Creator can support a variety of universal standard image formats, main formats including: contains only one gray channel INT, contains a grayscale channels and a transparency of INTA, including red, green and blue three color RGB channels; Include red, green and blue three color channels and a transparency RGBA; As well as TGA, JPEG, TIF, GIF, BMP format.
The necessary texture memory = the texel size in X direction × the texel size in Y direction × the number of color channels Texture memory is designed for loading and storing texture image memory space, most of the real-time system has a dedicated texture memory, and some real-time system directly to the texture image loaded into the system memory.
The texture mapping of Creator can be divided into the following categories: Put Texture can determine texture mapping by setting the selected three points on the plane and can modify the number of affixed textures to change the elaboration and change the shape of the textures to realize special effects; 4 Point Put Texture can determine the basic differences between texture mapping, function and three-point plane mapping; Surface Project Texture conducts texture mapping to the selected object or plane according to plane and the elaboration of the texture can be adjusted directly; Spherical Project Texture conducts texture mapping from the symmetrical center of the object top and bottom surfaces; Radial Project Texture conducts texture mapping radially from the object top surface center; Geo-Put Texture changes texture shapes according to the ground surface situation so as to perfectly integrate the texture and ground; Environment Map Texture shows the scenes around the object by a pattern
According to different color channel number and the way of compression, the texture image can be stored for a variety of formats, Creator can support a variety of universal standard image formats, main formats including: contains only one gray channel INT, contains a grayscale channels and a transparency of INTA, including red, green and blue three color RGB channels; Include red, green and blue three color channels and a transparency RGBA; As well as TGA, JPEG, TIF, GIF, BMP format.
The necessary texture memory = the texel size in X direction × the texel size in Y direction × the number of color channels Texture memory is designed for loading and storing texture image memory space, most of the real-time system has a dedicated texture memory, and some real-time system directly to the texture image loaded into the system memory.
The texture mapping of Creator can be divided into the following categories: Put Texture can determine texture mapping by setting the selected three points on the plane and can modify the number of affixed textures to change the elaboration and change the shape of the textures to realize special effects; 4 Point Put Texture can determine the basic differences between texture mapping, function and three-point plane mapping; Surface Project Texture conducts texture mapping to the selected object or plane according to plane and the elaboration of the texture can be adjusted directly; Spherical Project Texture conducts texture mapping from the symmetrical center of the object top and bottom surfaces; Radial Project Texture conducts texture mapping radially from the object top surface center; Geo-Put Texture changes texture shapes according to the ground surface situation so as to perfectly integrate the texture and ground; Environment Map Texture shows the scenes around the object by a pattern
Online since: July 2016
Authors: Shinichi Furusawa, Yohei Minami
In contrast, a low number of highly conductive potassium ionic conductors have been reported [6].
The trajectory of the plotted data showed a distorted arc, attributed to the superposition of the impedance of the crystalline phase, glass phase, grain boundary and electrode.
(2) Here, N is the number density of the charge carrier, Ze is the charge of the carrier, a is the hopping distance, Γ0 is the attempt frequency, Δ is the activation energy and f is a correlation factor with a value of approximately 1.
Furthermore, the difference of σdc seems to depend on the prefactor σ0, indicating that the number density of the effective mobile ions is possibly different.
The trajectory of the plotted data showed a distorted arc, attributed to the superposition of the impedance of the crystalline phase, glass phase, grain boundary and electrode.
(2) Here, N is the number density of the charge carrier, Ze is the charge of the carrier, a is the hopping distance, Γ0 is the attempt frequency, Δ is the activation energy and f is a correlation factor with a value of approximately 1.
Furthermore, the difference of σdc seems to depend on the prefactor σ0, indicating that the number density of the effective mobile ions is possibly different.
Online since: September 2013
Authors: Yang Yu, Xun Yi Ren
Introduction
Numbers of virtual machines (VMs) can be running on the same hardware platform with server virtualization technology [1], which brings serious security hidden troubles [2] as well as convenience.
SELinux is security-enhanced Linux with flexible and fine-grained mandatory access control (MAC) implemented on Linux system.
MAC policy is carried out in SELinux kernel in accordance with the principle of least privilege to make that user programs and system servers only get the minimum number of privileges to meet the needs of performing tasks, with which the potential harm would be greatly weakened or eliminated when user programs and system daemons are being infringed.
However, shown in figure 3, numbers of VMs run in the same server after virtualization so that a malicious VM can directly attack other VMs even the server.
SELinux is security-enhanced Linux with flexible and fine-grained mandatory access control (MAC) implemented on Linux system.
MAC policy is carried out in SELinux kernel in accordance with the principle of least privilege to make that user programs and system servers only get the minimum number of privileges to meet the needs of performing tasks, with which the potential harm would be greatly weakened or eliminated when user programs and system daemons are being infringed.
However, shown in figure 3, numbers of VMs run in the same server after virtualization so that a malicious VM can directly attack other VMs even the server.
Online since: November 2016
Authors: Mònica Bassas-Galia, Narcis Fosso, Vanessa Gaillard, Manfred Zinn, Marc Mathieu, Silvia Schintke, Enrico M. Staderini, Charles Tematio
PHAs are bacterial polyesters that are synthetized by a large number of microorganisms under specific cultivation conditions.
PHAs are accumulated intracellularly as carbon and energy storage compound [4] and based on the number of carbon atoms in the monomer unit, these polymers can be classified mainly into two groups: short-chain-length (scl) PHA and medium-chain-length (mcl) PHA.
Acknowledgements This work was financially supported by the project BIOFLEX (HES-SO) under grant number HES-SO/I2_13-03.
Novel bio-based composites of polyhydroxyalkanoate (PHA)/distillers dried grains with solubles (DDGS), RSC Adv. 4 (2014) 39802
PHAs are accumulated intracellularly as carbon and energy storage compound [4] and based on the number of carbon atoms in the monomer unit, these polymers can be classified mainly into two groups: short-chain-length (scl) PHA and medium-chain-length (mcl) PHA.
Acknowledgements This work was financially supported by the project BIOFLEX (HES-SO) under grant number HES-SO/I2_13-03.
Novel bio-based composites of polyhydroxyalkanoate (PHA)/distillers dried grains with solubles (DDGS), RSC Adv. 4 (2014) 39802
Online since: April 2013
Authors: Hasan Zuhudi Abdullah, N.H. Mohd Idrus
A number of previous studies on titanium dioxide (TiO2) proven the presence of anatase has enhance hydroxyapatite (HAP) precipitation on TiO2 surface which beneficial for biomedical usage especially in dental and orthopedics.
However, their result were not supported the discussion and they suggested that a larger grain size of rutile was accountable to the result.
However, their result were not supported the discussion and they suggested that a larger grain size of rutile was accountable to the result.
Online since: March 2016
Authors: Jian Bin Zhang, Jiu Xin Chen, Cong Xu, Wen Long Xiao, Wen Yi Liu, Chao Li Ma, Mao Wen Liu
In the RE modified alloy with a higher cooling rate (~1000K/s), the number of the branches on RE modified eutectic Si increased, and the morphology of eutectic S was modified to coral-like structure.
A large number of eutectic Si particles distribute on α-Al matrix.
In RE modified alloy, the number of the branches on eutectic Si increase, and the morphology of eutectic Si is modified to a coral-like structure.
In the RE modified alloy with a higer cooling rate (~1000K/s), the number of the branches on RE modified eutectic Si increase, and the morphology of eutectic Si is modified to coral-like structure
Effects of Al−Ti−B−RE grain refiner on microstructure and mechanical properties of Al−7.0Si−0.55Mg alloy[J].
A large number of eutectic Si particles distribute on α-Al matrix.
In RE modified alloy, the number of the branches on eutectic Si increase, and the morphology of eutectic Si is modified to a coral-like structure.
In the RE modified alloy with a higer cooling rate (~1000K/s), the number of the branches on RE modified eutectic Si increase, and the morphology of eutectic Si is modified to coral-like structure
Effects of Al−Ti−B−RE grain refiner on microstructure and mechanical properties of Al−7.0Si−0.55Mg alloy[J].
Online since: July 2013
Authors: Zheng Hua Wang, Yao Yuan Zeng, Wen Tao Zhao
For a k-way partition, the coarsening phase ends when the number of vertices becomes less than .
Priority rule number two: deciding the merging sequence of the vertices with equal weighted inner product based on the ascending order of their neighbor number.
The convergence rate of vertices number comparisons of nine algorithms.
The convergence rate of vertices number comparisons between PWIPM and hMETIS.
Fine-grained supply gating through hypergraph partitioning and Shannon decomposition for active power reduction. in Proceedings of the conference on Design, automation and test in Europe. 2008: ACM
Priority rule number two: deciding the merging sequence of the vertices with equal weighted inner product based on the ascending order of their neighbor number.
The convergence rate of vertices number comparisons of nine algorithms.
The convergence rate of vertices number comparisons between PWIPM and hMETIS.
Fine-grained supply gating through hypergraph partitioning and Shannon decomposition for active power reduction. in Proceedings of the conference on Design, automation and test in Europe. 2008: ACM
Online since: October 2010
Authors: Bei Zhi Li, Da Hu Zhu, Jing Zhu Pang, Zhen Xin Zhou, Jian Guo Yang
Due to the difficulty in arrangement of thermocouples, temperature measurement in
grinding presents a number of challenges, particularly in high speed cylindrical-plunge grinding.
Meanwhile, as a result of the higher wheel speed, the number of grains involved in cutting became more and the friction between wheel and workpiece intensified, causing the temperature increase.
Acknowledgement The authors would like to gratefully acknowledge the financial support from the Major State Basic Research Development Program of China ("973" Program) (Number: 2009CB724403) and Important National Science & Technology Specific Projects (Number: 2009ZX04001-101).
Meanwhile, as a result of the higher wheel speed, the number of grains involved in cutting became more and the friction between wheel and workpiece intensified, causing the temperature increase.
Acknowledgement The authors would like to gratefully acknowledge the financial support from the Major State Basic Research Development Program of China ("973" Program) (Number: 2009CB724403) and Important National Science & Technology Specific Projects (Number: 2009ZX04001-101).
Online since: November 2007
Authors: Dezső L. Beke, Z. Erdélyi, A. Csik, G.A. Langer
In nanostructured materials, where the density of grain- and interphase-boundaries is high,
the diffusion and kinetics of surface segregation, i.e. the effective material flow is always influenced by
the contributions of these boundaries [1].
This deviation is a real "nano-effect", because after dissolving a certain number of layers (long time or macroscopic limit), the interface shift returns to the Fickian behaviour independently of the input parameters (see Fig. 5).
Although, JI also decreases with increasing time/number of layer dissolved, but Jβ decreases much faster.
Following the phenomenological definition of K, JI=K(ce-c) (c and ce denote the current and the equilibrium composition at the interface, respectively) and comparing this to the JI in the discrete model we obtain: [5] ( )kTQzK K v −≅ expν with QK=E0+zlV+mkT/2, where E0 and zl are the saddle point energy and the lateral coordination number, respectively.
The sharpening can be qualitatively predicted from the classical Fick I law although it is not able to provide the correct kinetics on nanoscale. 0 0.2 0.4 0.6 0.8 1 0 10 20 30 layer number Atomic fraction of Mo t = 0 t > 0 Fig. 7 Composition distribution during intermixing in one period of a Mo/V multilayer calculated from an atomistic model, as in [3].
This deviation is a real "nano-effect", because after dissolving a certain number of layers (long time or macroscopic limit), the interface shift returns to the Fickian behaviour independently of the input parameters (see Fig. 5).
Although, JI also decreases with increasing time/number of layer dissolved, but Jβ decreases much faster.
Following the phenomenological definition of K, JI=K(ce-c) (c and ce denote the current and the equilibrium composition at the interface, respectively) and comparing this to the JI in the discrete model we obtain: [5] ( )kTQzK K v −≅ expν with QK=E0+zlV+mkT/2, where E0 and zl are the saddle point energy and the lateral coordination number, respectively.
The sharpening can be qualitatively predicted from the classical Fick I law although it is not able to provide the correct kinetics on nanoscale. 0 0.2 0.4 0.6 0.8 1 0 10 20 30 layer number Atomic fraction of Mo t = 0 t > 0 Fig. 7 Composition distribution during intermixing in one period of a Mo/V multilayer calculated from an atomistic model, as in [3].