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Online since: May 2012
Authors: Dong Wang, Xiao Si Su, Guang Cai Hou, Zhen Hong Zhao, Hong Yun Ma
The standard is based on a large number of borehole investigation and stratified sampling.
Great thickness of Cretaceous stratum is mainly composed with fluvial sandstone which contains widely coarse-grained sandstone.
Great thickness of Cretaceous stratum is mainly composed with fluvial sandstone which contains widely coarse-grained sandstone.
Online since: January 2013
Authors: Rui Hu, Hong Chao Kou, Jin Shan Li, Lian Zhou, Xiao Hua Wang
A reduction in the number and severity of this bioactive deposition was observed with the decrease in relative density of porous titanium because of the increasing surface area.
Close examination revealed that there was grain pullout due to corrosion in several places on the sample after the alkali of 5M NaOH immersion and heat treatment.
A reduction in the number and severity of damaged regions were observed with the decrease in relative density of porous titanium, as shown both in the interior of cells (Fig. 2 (i)~ Fig. 2(l))and on the surface of cells (Fig. 2 (m)~ Fig. 2(p)).
A reduction in the number and severity of damaged regions were observed with the decrease in the relative density both in the interior of cells and on the surface of cells of the porous titanium.
Close examination revealed that there was grain pullout due to corrosion in several places on the sample after the alkali of 5M NaOH immersion and heat treatment.
A reduction in the number and severity of damaged regions were observed with the decrease in relative density of porous titanium, as shown both in the interior of cells (Fig. 2 (i)~ Fig. 2(l))and on the surface of cells (Fig. 2 (m)~ Fig. 2(p)).
A reduction in the number and severity of damaged regions were observed with the decrease in the relative density both in the interior of cells and on the surface of cells of the porous titanium.
Online since: March 2014
Authors: Tong Na Liu, Song Jin
Such design paradigm helps to perform fine-grained DVFS, thereby effectively reducing the system energy [11]-[15].
For a task group, the matching VFIs includes three categories: (1) the VFIs are idle (i.e., all of the cores in the VFIs are available) and their size (core number) is equal to or larger than the task number of the task group; (2) the VFIs are not idle, whereas some cores within the VFIs are available and the core number is equal to or larger than the task number of the task group.
Partitioning VFI with regular shape is performed by grouping fixed number of adjacent cores into VFIs.
Note that the maximum VFI number is constrained to be 10.
Statistic of VFI partition Category regular irregular nVFI 8 9 nCore 4 3-5 nVFI: number of VFIs; nCore: number of cores in VFIs C.
For a task group, the matching VFIs includes three categories: (1) the VFIs are idle (i.e., all of the cores in the VFIs are available) and their size (core number) is equal to or larger than the task number of the task group; (2) the VFIs are not idle, whereas some cores within the VFIs are available and the core number is equal to or larger than the task number of the task group.
Partitioning VFI with regular shape is performed by grouping fixed number of adjacent cores into VFIs.
Note that the maximum VFI number is constrained to be 10.
Statistic of VFI partition Category regular irregular nVFI 8 9 nCore 4 3-5 nVFI: number of VFIs; nCore: number of cores in VFIs C.
Online since: January 2015
Authors: Yan Zheng Wang, Guang Ya Si, Yuan Li Wu, Pi Luo
K. proposes a fine-grained model for global undersea cable infrastruture and a network traffic modeling method based on network flow theory [4], but this model doesn’t include damage situation and time properties of network flow which are neccesary for real world.
Regions which have a larger number of Internet users usually send more network traffic than they receive at an international level.
The number of Internet hosts in these five regions is shown in table 1.
Number of Internet hosts by region Region Number of Internet hosts A 100,000,000 B 8,000,000 C 63,000,000 D 12,000,000 E 200,000,000 As table 2 shows, the traffic demand matrix is calculated using algorithm in section 3.2.
Since the number of Internet hosts in region E is the largest, the traffic E exchanged with other regions accounted for majority of the total traffic in the undersea cable system.
Regions which have a larger number of Internet users usually send more network traffic than they receive at an international level.
The number of Internet hosts in these five regions is shown in table 1.
Number of Internet hosts by region Region Number of Internet hosts A 100,000,000 B 8,000,000 C 63,000,000 D 12,000,000 E 200,000,000 As table 2 shows, the traffic demand matrix is calculated using algorithm in section 3.2.
Since the number of Internet hosts in region E is the largest, the traffic E exchanged with other regions accounted for majority of the total traffic in the undersea cable system.
Online since: June 2008
Authors: Nahed El Mahallawy
These nodules consisted of a number of sub-micro nodules which were
resolved at higher magnification (Fig. 2).
The results indicated the presence of amorphous and some nano crystals with an approximate grain size of 3 to 5 nm before heat treatment which increased to 30 to 50 nm after heat treatment (HT) [ 68].
Previous qualitative observations indicated that finer grain sizes - on micro-scale - were obtained on steel surfaces in Ni-P deposits with increasing P content [69-70] or with adding W to the Ni-P deposit [49].
However, no quantitative measurements of the grain size were made.
However, no quantitative measurements of the grain size were given.
The results indicated the presence of amorphous and some nano crystals with an approximate grain size of 3 to 5 nm before heat treatment which increased to 30 to 50 nm after heat treatment (HT) [ 68].
Previous qualitative observations indicated that finer grain sizes - on micro-scale - were obtained on steel surfaces in Ni-P deposits with increasing P content [69-70] or with adding W to the Ni-P deposit [49].
However, no quantitative measurements of the grain size were made.
However, no quantitative measurements of the grain size were given.
Online since: June 2017
Authors: Xiao Liu, Long Xue, Xiao Fan Pang, He Qing Shen, Zi Ming Wang
Therefore, C-S-H /PCE nanocomposites can improve the early strength of mortar effectively since it can lower the barrier of nucleation of the products, promote the nucleation and inhibit the growth of large grains effectively.
In addition, a large number of studies have shown that the superplasticizer can have an impact on the C-S-H impact, but the influence of superplasticizer used on the preparation of calcium silicate hydrate effects need further study.
In addition, a large number of studies have shown that the superplasticizer can have an impact on the C-S-H impact, but the influence of superplasticizer used on the preparation of calcium silicate hydrate effects need further study.
Online since: May 2021
Authors: E.V Svidenko, V.S. Garipov, S.I. Bogodukhov, E.S. Kozik
The main methods to enhance physical and mechanical properties of hard-alloy plates are improvement of manufacturing technology, including production of fine-grained alloys and microalloying, as well as applying composite coating by vacuum deposition, which allows to increase the tool resistance 1.5 to 2 times.
Alloy grade Number of passes Micro-hardness under load 1,96 N Wear on the front surface Hf, mm Wear on the back surface Hb,mm Т15К6 (source) 5 1554; 1542; 1543; 1554; 1543 0,46 0,24 Т15К6 (nitriding) 5 1815; 1787; 1787;1748;1715; 0,08 0,04 Т14К8 (source) 5 1515; 1465; 1465; 1465; 1487 0,29 0,27 Т14К8 (nitriding) 5 1648; 1787; 1687;1648;1615; 0,1 0,06 The analysis of Table 5 suggests that, after nitrogenizing at Т = 1,200 °С, the cutting wear of quick-change plates for cutters made of T15K6 and T14K8 hard allows decreased on average 3 to 5 times, whereas the micro-hardness increased up to 30 %.
Alloy grade Number of passes Micro-hardness under load 1,96 N Wear on the front surface Hf, mm Wear on the back surface Hb,mm Т15К6 (source) 5 1554; 1542; 1543; 1554; 1543 0,46 0,24 Т15К6 (nitriding) 5 1815; 1787; 1787;1748;1715; 0,08 0,04 Т14К8 (source) 5 1515; 1465; 1465; 1465; 1487 0,29 0,27 Т14К8 (nitriding) 5 1648; 1787; 1687;1648;1615; 0,1 0,06 The analysis of Table 5 suggests that, after nitrogenizing at Т = 1,200 °С, the cutting wear of quick-change plates for cutters made of T15K6 and T14K8 hard allows decreased on average 3 to 5 times, whereas the micro-hardness increased up to 30 %.
Online since: February 2019
Authors: N.A. Tolmacheva, V.V. Barakhtenko, A.E. Burdonov, N.E. Garashchenko, A.A. Garashchenko, Elena Zelinskaya
The total number of active co-firing heat and power plants (CHP plants) in Irkutsk Oblast that combust coal is 13.
There are a significant number of patented technologies in which soot is used in cement composites [11–14].
Residues on sieves are weighed and the content of fractions with grain size according to sieve mesh size is calculated in percentage by mass [24].
The system of grains dispersion in a liquid medium and two lasers were used.
Moreover, the number of foaming agent active molecules is growing as the temperature rises.
There are a significant number of patented technologies in which soot is used in cement composites [11–14].
Residues on sieves are weighed and the content of fractions with grain size according to sieve mesh size is calculated in percentage by mass [24].
The system of grains dispersion in a liquid medium and two lasers were used.
Moreover, the number of foaming agent active molecules is growing as the temperature rises.
Online since: November 2010
Authors: Xiu Feng Ren, Fen Wang, Hong En Nian, Yuan Zhou, Yu Na Pang, Hong Bin Wang
The results showed all the as-prepared Co/Ce-V-Zr-TiO2 catalysts were made up of nanometer grains.
There was the apparent diffraction peak of CoO in the XRD patterns, whereas the peak value of CoO was lowered because of a large number addition of Co, as a result that there was a serious effect on the formation of CoO active component and a negative factor to the catalytic reaction.
Combined with the XRD patterns of catalyst(Fig.2(a)), a large number of CeVO4 and ZrV2O7 complex solid solution could be found, which leaded to larger particles, unbalanced micropores and less contact areas, resulting in not conducive to catalytic reaction.
Both the supporter Zr-TiO2 catalytic activity and the NOx conversion activity of the catalyst were increased rapidly with the calcination temperature ranged from 250 oC to 450 oC, which showes that a large number of supporters could be found and the NOx conversion rate was improved rapidly with rising temperature.
There was the apparent diffraction peak of CoO in the XRD patterns, whereas the peak value of CoO was lowered because of a large number addition of Co, as a result that there was a serious effect on the formation of CoO active component and a negative factor to the catalytic reaction.
Combined with the XRD patterns of catalyst(Fig.2(a)), a large number of CeVO4 and ZrV2O7 complex solid solution could be found, which leaded to larger particles, unbalanced micropores and less contact areas, resulting in not conducive to catalytic reaction.
Both the supporter Zr-TiO2 catalytic activity and the NOx conversion activity of the catalyst were increased rapidly with the calcination temperature ranged from 250 oC to 450 oC, which showes that a large number of supporters could be found and the NOx conversion rate was improved rapidly with rising temperature.
Online since: November 2014
Authors: Jing Xu
TiO2 powder was characterized by using XRD, UV-vis, IR to determine the crystal structure, grain size and spectral properties.
Table 3 Photodegradation rate varies with the samarium doping ratio Samarium doping ratio (%) 0.2 0.4 0.5 0.8 1.0 Photodegradation rate (%) 39.00 42.80 40.20 39.60 37.90 Table 4 Photodegradation rate varies with the amount of catalyst Amount of catalyst (mg) 20 30 40 50 60 80 Photodegradation rate (%) 39.80 40.50 41.10 42.80 42.83 42.93 Table 5 The factors and levels of orthogonal test in synthesizing samarium doped ultra-fine TiO2 Level Degradation time (min) Calcination temperature (ºC) Samarium doping ratio (%) Amount of catalyst (mg) A B C D 1 30 400 0.2 20 2 60 500 0.4 50 3 90 600 0.8 80 Table 6 Results and analysis in orthogonal test L9(34) Number Calcination temperature (ºC) Degradation time (min) Lanthanum doping ratio (%) Amount of catalyst (mg) Photodegradation rate (%) A B C D 1 1 1 1 1 10.20 2 1 2 2 2 19.00 3 1 3 3 3 13.60 4 2 1 2 3 33.00 5 2 2 3 1 29.80 6 2 3 1 2 36.40 7 3 1 3 2 35.60 8 3 2 1 1 39.00 9 3 3 2 3 36.90 K1 0.428 0.788 0.856 0.769 K2 0.992 0.878 0.876
Table 3 Photodegradation rate varies with the samarium doping ratio Samarium doping ratio (%) 0.2 0.4 0.5 0.8 1.0 Photodegradation rate (%) 39.00 42.80 40.20 39.60 37.90 Table 4 Photodegradation rate varies with the amount of catalyst Amount of catalyst (mg) 20 30 40 50 60 80 Photodegradation rate (%) 39.80 40.50 41.10 42.80 42.83 42.93 Table 5 The factors and levels of orthogonal test in synthesizing samarium doped ultra-fine TiO2 Level Degradation time (min) Calcination temperature (ºC) Samarium doping ratio (%) Amount of catalyst (mg) A B C D 1 30 400 0.2 20 2 60 500 0.4 50 3 90 600 0.8 80 Table 6 Results and analysis in orthogonal test L9(34) Number Calcination temperature (ºC) Degradation time (min) Lanthanum doping ratio (%) Amount of catalyst (mg) Photodegradation rate (%) A B C D 1 1 1 1 1 10.20 2 1 2 2 2 19.00 3 1 3 3 3 13.60 4 2 1 2 3 33.00 5 2 2 3 1 29.80 6 2 3 1 2 36.40 7 3 1 3 2 35.60 8 3 2 1 1 39.00 9 3 3 2 3 36.90 K1 0.428 0.788 0.856 0.769 K2 0.992 0.878 0.876