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Online since: February 2018
Authors: Zhi Yu Xiao, Hai Ping Zou, Yu Wan Cheng
Since the cooling velocity of gas atomization is fast, there's not enough time for the grain of fine particles to grow up and finally make dendritic particles, internal microstructures are the same as these in the surface (Fig. 5(c)).
Bluntness utilizes the ratio of surface curvature of every point of the contour and the maximum inscribed discs grain contour curvature to accurately compute the sphericity of particles.
The formula is as follows: (2) Where n is the number of agglomeration detected on the particle.
The correspondence of the Outg and the number of particle agglomeration are listed in Table 2.
Table 2 Correspondence of the Outg and the number of particle agglomeration.
Bluntness utilizes the ratio of surface curvature of every point of the contour and the maximum inscribed discs grain contour curvature to accurately compute the sphericity of particles.
The formula is as follows: (2) Where n is the number of agglomeration detected on the particle.
The correspondence of the Outg and the number of particle agglomeration are listed in Table 2.
Table 2 Correspondence of the Outg and the number of particle agglomeration.
Online since: July 2014
Authors: Jian Wang Hu, Pei Zhang Cui, Ying Liu
And Grid is able to manage a large number of heterogeneous resources of geographically and organizationally distributed.
With the analysis of the runtime performance of GSRI, it is shown that despite the latency created by the transmission through WAN, the GSRI may support the coarse-grained large-scare distributed simulation applications.
With the analysis of the runtime performance of GSRI, it is shown that despite the latency created by the transmission through WAN, the GSRI may support the coarse-grained large-scare distributed simulation applications.
Online since: June 2011
Authors: Bing Suo Pan, Xiao Hong Fang, Ming Yuan Niu
Binding layers have three kinds of thickness: 0.25 mm, 0.37 mm and 0.45 mm, corresponding to the number of binding layers of 13, 11 and 10, respectively.
Working layers and binding layers were preformed by cold pressing, then assembled according to designed layer number and then hot pressed in vacuum.
The cutter samples were numbered S1, S2, …, S6 as in Table 1.
Table 1 Sample numbering Sample number S1 S2 S3 S4 S5 S6 Number of working layers 13 11 10 13 11 10 Number of binding layers 13 11 10 13 11 10 Binding layer formula 1# 1# 1# 2# 2# 2# The friction and wear properties of bit cutters were investigated using a pin-on-disc friction and wear tester (MG-2000A).
Discs were machined from blackmica contained medium-fine grained monzonitic granite as tribopair, whose compressive strength is 169.39 MPa.
Working layers and binding layers were preformed by cold pressing, then assembled according to designed layer number and then hot pressed in vacuum.
The cutter samples were numbered S1, S2, …, S6 as in Table 1.
Table 1 Sample numbering Sample number S1 S2 S3 S4 S5 S6 Number of working layers 13 11 10 13 11 10 Number of binding layers 13 11 10 13 11 10 Binding layer formula 1# 1# 1# 2# 2# 2# The friction and wear properties of bit cutters were investigated using a pin-on-disc friction and wear tester (MG-2000A).
Discs were machined from blackmica contained medium-fine grained monzonitic granite as tribopair, whose compressive strength is 169.39 MPa.
Online since: November 2011
Authors: Hong Bin Wang
First, the nodes exchange the typical distance vector protocol, each node makes the network access to the anchor minimum number of hops between nodes.
Anchor node density are discussed below, node density, node communication radius and the location of the number of circulating modified the traditional DV-Hop algorithm and the improved positioning accuracy of the algorithm.
Fig.2 is a 100m × 100m region of the random distribution of nodes, each node randomly generated coordinates, in which the number of anchor nodes and unknown nodes, respectively: 20 and 180, respectively, with circles and black dots.
From the figure we can see, with the total number of nodes increases, the average location error of two algorithms are gradually reduced.
Dynamic fine grained localization in Ad-Hoc sensor networks[C].
Anchor node density are discussed below, node density, node communication radius and the location of the number of circulating modified the traditional DV-Hop algorithm and the improved positioning accuracy of the algorithm.
Fig.2 is a 100m × 100m region of the random distribution of nodes, each node randomly generated coordinates, in which the number of anchor nodes and unknown nodes, respectively: 20 and 180, respectively, with circles and black dots.
From the figure we can see, with the total number of nodes increases, the average location error of two algorithms are gradually reduced.
Dynamic fine grained localization in Ad-Hoc sensor networks[C].
Online since: August 2013
Authors: Yun Zhang, Guang Ming Liang, Ren Ren Liu, Dong Hua Liu
This system calculate the number of the " 0 " by comparing with the difference in frequency with the DDS, which be shown in fig.4. fi, i=1,2, ...
So the number of “0” that must be removed is calculated by the received frame frequency ( FI ) and standard frequency ( F0 ) in DDS.
For example, if Ft is 74.25MHz,corresponding to that nx=n0.If the Ft has changed, then the number of “0” obtain by equation (2).
Drawing a conclusion, if the input frequency (Ft) changed from 74.17MHz to 74.32MHz,the number of “0” appending to the end of frame change from 14363 to 17212.
[4] Elson J,Girod L,Estrin D.Fine-Grained network time sychroniztaion using broadcasts[C].the 5th Symp.on Operating Systems Design and Implementation.ACM Press,2002.147-163
So the number of “0” that must be removed is calculated by the received frame frequency ( FI ) and standard frequency ( F0 ) in DDS.
For example, if Ft is 74.25MHz,corresponding to that nx=n0.If the Ft has changed, then the number of “0” obtain by equation (2).
Drawing a conclusion, if the input frequency (Ft) changed from 74.17MHz to 74.32MHz,the number of “0” appending to the end of frame change from 14363 to 17212.
[4] Elson J,Girod L,Estrin D.Fine-Grained network time sychroniztaion using broadcasts[C].the 5th Symp.on Operating Systems Design and Implementation.ACM Press,2002.147-163
Online since: August 2013
Authors: Jing Hai Zhou, Yu Xian Zhang, Xian Hong Meng, Rui Xu
Use block molding, vibrating close-grained, after 24h bosses.
The main purpose of this study is to establish the surplus compressive strength and fatigue cyclic number relationship (except for special instructions, this article mentioned in the residual strength shall mean residual static load strength).
Table.1 Experimental result of uncorroded specimens group stress level result average 1 number 1-1 1-2 1-3 32.1 σ0(MPa) 37.3 29.4 29.6 2 S1=0.75 number 2-1 2-2 2-3 13560 Nf 14581 10339 15761 3 S1=0.75 number 3-1 3-2 3-3 31.1 σr(MPa) 35.6 28.7 28.9 Table.2 Experimental result of corroded specimens group stress level result average 4 number 4-1 4-2 4-3 26.5 σ0(MPa) 28.8 28.1 22.6 5 S1=0.75 number 5-1 5-2 5-3 9007 Nf 7460 10835 7726 6 S1=0.75 number 6-1 6-2 6-3 25.8 σr(MPa) 27.7 20.9 28.8 Data processing.
In practical engineering, magnesium ion on concrete corrosion should not ignore, should consider the corresponding protective measures, to ensure the project can achieve the desired use fixed number of year.
The main purpose of this study is to establish the surplus compressive strength and fatigue cyclic number relationship (except for special instructions, this article mentioned in the residual strength shall mean residual static load strength).
Table.1 Experimental result of uncorroded specimens group stress level result average 1 number 1-1 1-2 1-3 32.1 σ0(MPa) 37.3 29.4 29.6 2 S1=0.75 number 2-1 2-2 2-3 13560 Nf 14581 10339 15761 3 S1=0.75 number 3-1 3-2 3-3 31.1 σr(MPa) 35.6 28.7 28.9 Table.2 Experimental result of corroded specimens group stress level result average 4 number 4-1 4-2 4-3 26.5 σ0(MPa) 28.8 28.1 22.6 5 S1=0.75 number 5-1 5-2 5-3 9007 Nf 7460 10835 7726 6 S1=0.75 number 6-1 6-2 6-3 25.8 σr(MPa) 27.7 20.9 28.8 Data processing.
In practical engineering, magnesium ion on concrete corrosion should not ignore, should consider the corresponding protective measures, to ensure the project can achieve the desired use fixed number of year.
Online since: October 2013
Authors: Hong Bin Wang, Xue Gong Qiao, Yue Qi Han, Jie Zhang
First, the nodes exchange the typical distance vector protocol, each node makes the network access to the anchor minimum number of hops between nodes.
Anchor node density is discussed below, node density, node communication radius and the location of the number of circulating modified the traditional DV-Hop algorithm and the improved positioning accuracy of the algorithm.
Fig.2 is a 100m × 100m region of the random distribution of nodes, each node randomly generated coordinates, in which the number of anchor nodes and unknown nodes, respectively: 20 and 180, respectively, with circles and black dots.
From the figure we can see, with the total number of nodes increases, the average location error of two algorithms are gradually reduced.
Dynamic fine grained localization in Ad-Hoc sensor networks[C].
Anchor node density is discussed below, node density, node communication radius and the location of the number of circulating modified the traditional DV-Hop algorithm and the improved positioning accuracy of the algorithm.
Fig.2 is a 100m × 100m region of the random distribution of nodes, each node randomly generated coordinates, in which the number of anchor nodes and unknown nodes, respectively: 20 and 180, respectively, with circles and black dots.
From the figure we can see, with the total number of nodes increases, the average location error of two algorithms are gradually reduced.
Dynamic fine grained localization in Ad-Hoc sensor networks[C].
Online since: June 2014
Authors: Ge Li, Ze Qin Liu, Ze Yang Bai
When the particle was considered as a spherical particle, the mean diameter could be expressed by D [p, q].The general calculation formula was shown as follows, where the total number of particles that diameter was di was ni
Number mean diameter D [1, 0] was based on the number of particles.
The total length was and the total number was when particles were aligned.
Hence, D50 of the number mean diameter was selected as the reference diameter.
In Chinese: Comparison of Lake Sediment Grain Size Results Measured by Two Laser Diffraction Particle Size Analyzers.
Number mean diameter D [1, 0] was based on the number of particles.
The total length was and the total number was when particles were aligned.
Hence, D50 of the number mean diameter was selected as the reference diameter.
In Chinese: Comparison of Lake Sediment Grain Size Results Measured by Two Laser Diffraction Particle Size Analyzers.
Online since: June 2014
Authors: Zbyněk Keršner, Pavel Rovnaník, Libor Topolář, Pavel Schmid
Quartz sand with a maximum grain size of 2.5 mm was used as aggregate.
‘Number of overshoots’ refers to the number of pulses emitted by circuitry measuring the signal amplitude that exceed the threshold number for a given time interval.
The presence of a higher number of microcracks in the specimen can be inferred from the higher acoustic emission activity.
Fig. 3 shows the number of overshoots and the load vs. deflection of the samples.
It is evident in the case of the V samples that at the beginning of loading the number of overshoots was affected mainly by the drying of the AAS matrix.
‘Number of overshoots’ refers to the number of pulses emitted by circuitry measuring the signal amplitude that exceed the threshold number for a given time interval.
The presence of a higher number of microcracks in the specimen can be inferred from the higher acoustic emission activity.
Fig. 3 shows the number of overshoots and the load vs. deflection of the samples.
It is evident in the case of the V samples that at the beginning of loading the number of overshoots was affected mainly by the drying of the AAS matrix.
Online since: May 2012
Authors: Geng Ren, Dun Wu Chen, Shu Li Wang, Man Gen Mu
Specifications of soilcrete columns that are achieved from the jet grouting procedures from the diameter and strength aspect depend on jet grouting parameters such as grout pressure, lifting speed, number and diameter of nozzles and c/w ratio and specifications of local soil.
It is formed by the sediments overflowed from the riverbed and is sorted by waters, its grains are small and even with horizontal bedding and organic matters.
The parameters that should be assigned in single fluid system include grout pressure, number and dimensions of nozzles, W/C rate, rotating speed and lifting speed.
Specifications of soilcrete columns that are achieved from the jet grouting procedures from diameter and strength point depend on jet grouting parameters such as grout pressure, lifting speed, rotating speed, number and diameter of nozzles, cement/water ratio and specifications of local soil.
The air pressure, air flow, water pressure, water flow, number and diameter of nozzles and local soil specification were held constant and then the value of the grout pressure, cement/water ratio, lifting speed and rotating speed, respectively, were changed and the jet grouting parameters are shown in Table 3 and Table 4.
It is formed by the sediments overflowed from the riverbed and is sorted by waters, its grains are small and even with horizontal bedding and organic matters.
The parameters that should be assigned in single fluid system include grout pressure, number and dimensions of nozzles, W/C rate, rotating speed and lifting speed.
Specifications of soilcrete columns that are achieved from the jet grouting procedures from diameter and strength point depend on jet grouting parameters such as grout pressure, lifting speed, rotating speed, number and diameter of nozzles, cement/water ratio and specifications of local soil.
The air pressure, air flow, water pressure, water flow, number and diameter of nozzles and local soil specification were held constant and then the value of the grout pressure, cement/water ratio, lifting speed and rotating speed, respectively, were changed and the jet grouting parameters are shown in Table 3 and Table 4.