Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: January 2014
Authors: Qian Su, Wei Jiang, Jun Kai Yao, Wen Sun, Ling Ling Yang
Fine-grained soil is frozen, the water into ice (9% volume expansion),cause soil expansion, which is called frost heave phenomenon [1].Frost heaving mechanism is: when the temperature drops below 0 ℃,free water frozen into ice crystals first, and the outermost layer of weakly bound water began to freeze, causing ice crystals gradually expand, the combination of water film of ice crystals surrounding soil particles thinning.
(6) Every year, the subgrade frost damage concentrated in the period by the end of December to February, especially in early January frost damage occurs most concentrated account for 58% of the total number of frost damage whole year, below the frost heave height 10mm.
(6) Every year, the subgrade frost damage concentrated in the period by the end of December to February, especially in early January frost damage occurs most concentrated account for 58% of the total number of frost damage whole year, below the frost heave height 10mm.
Online since: September 2008
Authors: Chul Woo Kim, M. Kawatani, M. Tsukamoto, N. Fujita
It means there are very limited numbers of those designed
to run off of batteries.
Estrin: Fine-grained network time synchronization using reference broadcasts, Proc. of the Fifth Symp. on Operating Systems Design and Implementation (OSDI 2002), Boston, MA, USA (2002).
Estrin: Fine-grained network time synchronization using reference broadcasts, Proc. of the Fifth Symp. on Operating Systems Design and Implementation (OSDI 2002), Boston, MA, USA (2002).
Online since: January 2009
Authors: Hua Quan Yang, Yun Dong, Shi Hua Zhou
But at the early
age, especially the 1d, due to the "pearl effect" and the "grain effect" of fly ash and slag powder, the
Fig. 1 Schematic description of the
chemical shrinkage testing apparatus
0 10 20 30 40 50 60
-12
-10
-8
-6
-4
-2
0
Chemical shrinkage (%)
Curing age (d)
2
5
8
10
Fig. 2 the chemical shrinkage of several blending blending showed better dispersion and less different chemical shrinkage.
Acknowledgment The research reported was supported by fund from the National Natural Science Foundation of China (Serial Number: 50539010).
Acknowledgment The research reported was supported by fund from the National Natural Science Foundation of China (Serial Number: 50539010).
Online since: April 2009
Authors: Xiao Dong Zhang, Ji Hua Chen, Dan Li Xi
With the growing number of tourists, the
biggest landscape lake--The Center Lake, has shown worse and worse water quality.
The other is that the microorganism living on the surface of ceramic can cut some colloidal matter by their biological flocculation function then reduced the Zeta degree and be propitious to agglomeration of colloid grain in water [15]. 1 2 3 4 5 6 7 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100Removal rate/% TDP/(mg/L) Time/d Influent Effluent removal 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100Removal rate/% Turbidity/NTU Time/d Influent Effluent removal Fig. 9 the effect of TDP removal Fig. 10 the effect of Turbidity removal Conclusion By twelve months' test, the following results are concluded: Firstly, the purification effect of elastic padding in treating seriously polluted water is quite
The other is that the microorganism living on the surface of ceramic can cut some colloidal matter by their biological flocculation function then reduced the Zeta degree and be propitious to agglomeration of colloid grain in water [15]. 1 2 3 4 5 6 7 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100Removal rate/% TDP/(mg/L) Time/d Influent Effluent removal 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 50 60 70 80 90 100 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100Removal rate/% Turbidity/NTU Time/d Influent Effluent removal Fig. 9 the effect of TDP removal Fig. 10 the effect of Turbidity removal Conclusion By twelve months' test, the following results are concluded: Firstly, the purification effect of elastic padding in treating seriously polluted water is quite
Online since: October 2006
Authors: Jane P. Chang, Carey M. Tanner, Jun Lu, Hans Olof Blom
Grain boundaries present in polycrystalline films are thought to be paths for leakage
current as well as sites for defect proliferation during high-temperature processing [4].
At lower temperatures, the film remains amorphous for a larger number of ALD cycles compared to at higher temperatures.
At lower temperatures, the film remains amorphous for a larger number of ALD cycles compared to at higher temperatures.
Online since: September 2004
Authors: Kazuyuki Hokamoto, Krishnamorthy Raghukandan, P. Tamilchelvan, H.C. Dey, A.K. Bhaduri
They were annealed at
8500 C and 8000C, respectively, for one hour and subsequent furnace cooled to produce a coarse
grained structure.
Evaluation of the coefficients of models: The general model is given as Y = b0 + b1 D + b2 M + b3 A + b4 DM + b5 DA +b6 MA+ b7 DMA Where b0 is the average of response (h) and b1,b2 ... b7 are calculated using the following equation b = Σ( Xi x Yi ) / N where i varies from 1 to N in which Xi is the corresponding coded value of the process parameters, Yi is the corresponding response output variable value obtained from experiment and N is the total number of treatment combinations considered (main and interaction effects-in this case it is 8).
Evaluation of the coefficients of models: The general model is given as Y = b0 + b1 D + b2 M + b3 A + b4 DM + b5 DA +b6 MA+ b7 DMA Where b0 is the average of response (h) and b1,b2 ... b7 are calculated using the following equation b = Σ( Xi x Yi ) / N where i varies from 1 to N in which Xi is the corresponding coded value of the process parameters, Yi is the corresponding response output variable value obtained from experiment and N is the total number of treatment combinations considered (main and interaction effects-in this case it is 8).
Online since: July 2005
Authors: Františka Dorčáková, František Lofaj
RE-oxide and RE-oxynitride glasses (RE = rare-earth (lanthanide) element) with different nitrogen
contents are of considerable interest because such oxynitride glasses occur as grain boundary phases
in Si3N4 ceramics and they seriously affect their mechanical properties, especially at elevated
temperatures.
A number of earlier studies [1-6] indicates that the properties of the oxynitride glasses can be modified by nitrogen content and/or by a substitution of RE-modifiers with different ionic radii.
A number of earlier studies [1-6] indicates that the properties of the oxynitride glasses can be modified by nitrogen content and/or by a substitution of RE-modifiers with different ionic radii.
Online since: December 2011
Authors: Nai Chao Si, Guang Lei Liu, Song Hai Si, Zhi Jian Zhang
Table 1 Middle Heat-Treatment Method
number
Heat-treatment
Temperature/℃
keep heating
Time/min
cooling method
1
380
30, 60, 120, 180
water quenching
2
400
30, 60, 120, 180
water quenching
3
430
30, 60, 120, 180
water quenching
4
460
30, 60, 120, 180
water quenching
5
490
30, 60, 120, 180
water quenching
Results and Discussion
Influence on superelasticity of experimental wires by different aging treatment
The tensile tests were taken after the experimental wires were holding 30min, 60min, 120min and 180min respectively at 380℃.
Futhermore, it can be seen that the superelasticity will be destoryed for too long sintering time because of the growth of the Ti3Ni4 grains and the decline of the density of the dislocation.
Futhermore, it can be seen that the superelasticity will be destoryed for too long sintering time because of the growth of the Ti3Ni4 grains and the decline of the density of the dislocation.
Online since: January 2012
Authors: Tian Chun He, Jing Fan, Jian Bin Xie, Chun Feng Tang
As there were no fly ash, volcanic ash or other admixtures at the local area of the project, one replacement method that applying the fine-grained limestone powder and the water quenched iron slag (abbreviate to double admixtures) instead of fly ash as concrete admixtures has been proposed [2,3,4] .
There are 20 in situ shear strength test specimens, in which10 specimens were used separately in hot rise and cold rise layer that are numbered A1-A10, B1-B10.
There are 20 in situ shear strength test specimens, in which10 specimens were used separately in hot rise and cold rise layer that are numbered A1-A10, B1-B10.
Online since: May 2010
Authors: Berend Denkena, Bernd Breidenstein
In order to estimate the scattering of the residual stress after each process step, a large number of
residual stress measurements of commercially manufactured carbide indexable inserts, PVD-coated
with (Ti,Al)N, has been performed.
Etching removes the cobalt binding material, leading to a release of the WC grains, which causes a decrease of compressive stress.
Etching removes the cobalt binding material, leading to a release of the WC grains, which causes a decrease of compressive stress.