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Online since: October 2018
Authors: Yu.Yu. Galkin, S.A. Udodov
Compression at a very early age leads to an increase in the number of peaks related to hexagonal hydroaluminates and aluminum hydroxide.
This is illustrated by an increase of a number of related peaks in X-ray patterns.
In reference [23] this fact is deemed to be related with compaction under compression and reduction of porosity [24]; this is seen as a result of moisture diffusion to unhydrated cement grains and increase of degree of hydration in other writings [25-27].
In addition to comparison of heights of peaks of cement phases and fixing new peaks of hydration products, the number and intensity of peaks of CAH10 and C2AH8 hydrates, crystalline phase of AH3 (gibbsite), C4AH(13-19) and cubic phase of C3AH6 were estimated.
Stressed samples aged 7 days with water-cement ratio =0.28 generate a greater number of hydration products than the stressed samples with water-cement ratio =0.25 (Fig.3).
This is illustrated by an increase of a number of related peaks in X-ray patterns.
In reference [23] this fact is deemed to be related with compaction under compression and reduction of porosity [24]; this is seen as a result of moisture diffusion to unhydrated cement grains and increase of degree of hydration in other writings [25-27].
In addition to comparison of heights of peaks of cement phases and fixing new peaks of hydration products, the number and intensity of peaks of CAH10 and C2AH8 hydrates, crystalline phase of AH3 (gibbsite), C4AH(13-19) and cubic phase of C3AH6 were estimated.
Stressed samples aged 7 days with water-cement ratio =0.28 generate a greater number of hydration products than the stressed samples with water-cement ratio =0.25 (Fig.3).
Online since: April 2007
Authors: Fu Ping Wang, Hui Yuan Ma, Jun Peng, Bao Xia Dong
The absorbances at 202 and 253 nm increasing linearly to the bilayer
numbers for the film (given in the inset of Fig.1) show that the assembly is successful and uniform.
The close-packed clusters of SiW11Co-P2O7 nanoparticles with a mean grain size of ca. 26 nm are seen clearly in the film.
From the lower to the upper curves, the number of SiW11Co-P2O7 / PDDA bilayers is 0, 1, 2, 3 ·· 7 and 8, respectively.
The close-packed clusters of SiW11Co-P2O7 nanoparticles with a mean grain size of ca. 26 nm are seen clearly in the film.
From the lower to the upper curves, the number of SiW11Co-P2O7 / PDDA bilayers is 0, 1, 2, 3 ·· 7 and 8, respectively.
Online since: October 2012
Authors: Teng Jiao Liu, Zhi Ming Liu, Wei Qi Sun
As a dimensionless number, C-value is adjustable between 0(no erosion place like water area)~1(completely erosion place like bare land), through the maximum of which is hardly possible.
Covering 1020,000 sq.m², it has become an important commodity grain base.
The land in northeast black soil area has good soil conservation capacity, due to its forest acreage and vegetation number and variety. 3.
Covering 1020,000 sq.m², it has become an important commodity grain base.
The land in northeast black soil area has good soil conservation capacity, due to its forest acreage and vegetation number and variety. 3.
Online since: July 2011
Authors: Yong Mun Ryu, Bo Young Hur, Byeong Gu Kim, Rui Zhao
The porosity of AZ31 Mg alloy foams corresponding to 30s to 180s are around 35.0%,72.0%, 57.2% while the pore number increases.
In Fig.2 it is found that eutectic and intermetallic compounds phase (SiO2, MgO, Al2O3 etc:) are segregated in grain boundaries.
If the content of the foaming agent is increased, and the incubation time and temperature are increased as well, the number of pores, pore size, and porosity of the foam will be increased consequently.
In Fig.2 it is found that eutectic and intermetallic compounds phase (SiO2, MgO, Al2O3 etc:) are segregated in grain boundaries.
If the content of the foaming agent is increased, and the incubation time and temperature are increased as well, the number of pores, pore size, and porosity of the foam will be increased consequently.
Online since: August 2013
Authors: Feng Qin Wang, Yu Liu, Qi Li
Brief Introduction of SOA
SOA, an architectural model, can deploy, assemble and use loosely coupled, coarse-grained application components in distributing mode through the network.
By the combination of middleware technique and object-oriented software design method, a large number of component-oriented architecture modes are implemented in application systems, which support component reuse and expansion.
According to the results of the analysis of system requirements, the system can be divided into business components, and in accordance with the SOA architecture ideas, each component is composed of the front page, a number of basic services and composite services.
By the combination of middleware technique and object-oriented software design method, a large number of component-oriented architecture modes are implemented in application systems, which support component reuse and expansion.
According to the results of the analysis of system requirements, the system can be divided into business components, and in accordance with the SOA architecture ideas, each component is composed of the front page, a number of basic services and composite services.
Online since: February 2014
Authors: Lu Min Chen, Qi Lin, Zhi Zhong Zhu
According to the existing granulation technology documents, a lot of numerical simulation research on growth detection and control of the grain size is performed using contact mechanics theory and discrete element method.
With the increase of the number of particle surface, it gradually tend to spherical particles in shape and nature, so we are no longer considered here.
Materials of cylinder is steel and granular materials is zeolite, the total number of particles are 2000.
With the increase of the number of particle surface, it gradually tend to spherical particles in shape and nature, so we are no longer considered here.
Materials of cylinder is steel and granular materials is zeolite, the total number of particles are 2000.
Online since: June 2015
Authors: Alton B. Horsfall, Sandip Kumar Roy, Nicholas G. Wright, Konstantin Vassilevski
This is related to the increase number of grains after oxidation, resulting in a higher roughness and also increases Rsh.
Acknowledgement: The authors wish to acknowledge financial support from the Engineering and Physical Sciences Research Council (EPSRC), UK grant number EP/1037660/1.
Acknowledgement: The authors wish to acknowledge financial support from the Engineering and Physical Sciences Research Council (EPSRC), UK grant number EP/1037660/1.
Online since: July 2013
Authors: Hai Dong Yang, H. Zhang, J.L. Hu, Z.H. Qing
Detailed data is shown in Table 2:
Table 2 Mechanical Performance Comparison
TOOL Material
Fracture Toughness
[]
Rockwell A Hardness Number
Bending Strength
[MPa]
TOOLⅠ
12.8
90.5
1180
TOOLⅡ
11.7
91.5
918
TOOL I:Nano TiN modified TiC-based CERMETS cutters
TOOL II:Ultra-fine Ti(C,N)-based CERMETS cutters
Workpiece Material.
Table 3 Chemical compositions of 45 carbon steel (wt%) C Si Mn Cr Ni Cu Fe 0.42~0.50% 0.17~0.37% 0.50~0.80% <=0.25% <=0.30% <=0.25% rest Table 4 45 carbon steel mechanical properties at normal temperature Modulus of Elasticity[Gpa] Tensile Strength[Mpa] Yield Strength[Mpa] Ductility [%] Rockwell C Hardness Number 196 600 355 16 45~52 Experiment Conditions and Scheme.
Because of Nano TiN particle grain refining effect and dispersion strengthened effect, the strength and toughness of Nano TiN modified TiC-based CERMETS cutters were much more higher than those of ultra-fine Ti(C,N)-based CERMETS cutters[4],as a result tool tipping rarely occurred for Nano TiN modified TiC-based CERMETS cutter compared with the other one.
Table 3 Chemical compositions of 45 carbon steel (wt%) C Si Mn Cr Ni Cu Fe 0.42~0.50% 0.17~0.37% 0.50~0.80% <=0.25% <=0.30% <=0.25% rest Table 4 45 carbon steel mechanical properties at normal temperature Modulus of Elasticity[Gpa] Tensile Strength[Mpa] Yield Strength[Mpa] Ductility [%] Rockwell C Hardness Number 196 600 355 16 45~52 Experiment Conditions and Scheme.
Because of Nano TiN particle grain refining effect and dispersion strengthened effect, the strength and toughness of Nano TiN modified TiC-based CERMETS cutters were much more higher than those of ultra-fine Ti(C,N)-based CERMETS cutters[4],as a result tool tipping rarely occurred for Nano TiN modified TiC-based CERMETS cutter compared with the other one.
Online since: December 2013
Authors: Yun Fei Chen, Jing Jie Sha, Lei Liu, Gen Sheng Wu
The count number distribution of spike data point is present in Fig 2 (b) insert.
As shown in Fig. 2, the count number of spike data point is much less than that of the base current.
The experimental Si3N4 surface shows the hydrophobic wettabilitybecause of the adhesion of grain or particles.
As shown in Fig. 2, the count number of spike data point is much less than that of the base current.
The experimental Si3N4 surface shows the hydrophobic wettabilitybecause of the adhesion of grain or particles.
Online since: September 2014
Authors: Michaela Kostelecká, Jiří Kolisko
Introduction
UHPC (Ultra High Performance Concretes) are ultra-high grade concretes with fine-grained macrostructure and high consistency.
This highly advanced and sophisticated material offers a number of interesting applications such as the production of facade panels, which promotes more abroad.
After the required number of 150 cycles, the testing samples were conditioned in the water 20 ± 2 ° C during 7 days.
This highly advanced and sophisticated material offers a number of interesting applications such as the production of facade panels, which promotes more abroad.
After the required number of 150 cycles, the testing samples were conditioned in the water 20 ± 2 ° C during 7 days.