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Online since: March 2017
Authors: Mohammed Kadri, Kamel Ghouilem, Rachid MEHADDENE
Check the penetration and the number of equilibrium iterations used in each substep.
It also enables us like prospect to project studies and tests under different type of grains resulting from different materials in order to illustrate the friction behavior of the concrete mixture.
To also announce that as a prospect, the contacts friction problems are governed by any factors purely related to the surface state of the grains like surface roughness, thing which one did not take into account in our study.
It also enables us like prospect to project studies and tests under different type of grains resulting from different materials in order to illustrate the friction behavior of the concrete mixture.
To also announce that as a prospect, the contacts friction problems are governed by any factors purely related to the surface state of the grains like surface roughness, thing which one did not take into account in our study.
Online since: December 2013
Authors: Xiao Jiao Hou, Luan Luan, Shao Yan Jiang, Xiang Xin Xue
Introduction
Oil shale is fine-grained sedimentary rock including native organic matter, not dissolving in petroleum solvents and can extracting a lot of oil shale with pyrolysis[[] Liu Baiqian.
Take 40 g Fushun oil shale from sterile flasks, add 400 mL of sterile saline (m·v-1 = 0.85%), 30 ℃ 150 r· min-1 shock 30 min, the rock grains evenly dispersed in a suspension in sterile saline, to get an oil shale 10-1 bacteria. 2.
From Fig.5, which ZYK7 growing more lush, while the other two strains are growing poorer and smaller number of amplified by PCR ZYK7 rDNA ITS region, its molecular identification, the strains in Genbank Fusarium oxysporum (JF807394) 100% homology.
Take 40 g Fushun oil shale from sterile flasks, add 400 mL of sterile saline (m·v-1 = 0.85%), 30 ℃ 150 r· min-1 shock 30 min, the rock grains evenly dispersed in a suspension in sterile saline, to get an oil shale 10-1 bacteria. 2.
From Fig.5, which ZYK7 growing more lush, while the other two strains are growing poorer and smaller number of amplified by PCR ZYK7 rDNA ITS region, its molecular identification, the strains in Genbank Fusarium oxysporum (JF807394) 100% homology.
Online since: October 2008
Authors: Li Juan Li, Pei Yan Huang, Yong Chang Guo, Yang Yang
Coarse aggregate: granite detritus with 5mm-20mm grain size.
Both manpower and vibration platform are used to make concrete close-grained enough.
The number of the slippage lines increased with the load.
Both manpower and vibration platform are used to make concrete close-grained enough.
The number of the slippage lines increased with the load.
Online since: August 2016
Authors: Martina Drdlová, Radek Řídký, René Čechmánek
SIFCON is prepared by infiltrating pre-placed fibres with fine grain aggregate mortar.
Fine SiO2 sand with grain size of 0-1 mm, cement CEM 52.5R and water were the main components of the slurry mixture.
The total absorbed energy is obtained using the following formula: E = m.ag.h.x Where: E…Total absorbed energy [J] m…Weight of the impactor [g] ag…Gravity acceleration [m.s-2] h…Height of drop [m] x…Number of the drops [-] DE 50/1 RB 80/50 BN DE 30/08 FRC - reference DE 30/06 N DE 50/08 Figure 1 Selected slabs after drop test – different failure modes A comparison of total energy-absorption capacities of different slab specimens at ultimate impact strength stages is presented in Figure 3.
Fine SiO2 sand with grain size of 0-1 mm, cement CEM 52.5R and water were the main components of the slurry mixture.
The total absorbed energy is obtained using the following formula: E = m.ag.h.x Where: E…Total absorbed energy [J] m…Weight of the impactor [g] ag…Gravity acceleration [m.s-2] h…Height of drop [m] x…Number of the drops [-] DE 50/1 RB 80/50 BN DE 30/08 FRC - reference DE 30/06 N DE 50/08 Figure 1 Selected slabs after drop test – different failure modes A comparison of total energy-absorption capacities of different slab specimens at ultimate impact strength stages is presented in Figure 3.
Online since: May 2014
Authors: Tatiana Reyes, Timothy Dunne, Chun Nong Wang, Manuel Marya
Established correlation for aluminum alloys have shown that the alloys must at least exhibit a 110 Vickers hardness number (HVN)
It may be seen the disclosed alloy exhibits fairly large grains, all continuously decorated with gallium.
Due to its continuous grain boundary network of gallium, the alloy depicted in Figure 4 inherently possesses limited tensile properties, and turned out to be of limited usefulness.
It may be seen the disclosed alloy exhibits fairly large grains, all continuously decorated with gallium.
Due to its continuous grain boundary network of gallium, the alloy depicted in Figure 4 inherently possesses limited tensile properties, and turned out to be of limited usefulness.
Online since: April 2004
Authors: Todd S. Mintz, Thomas M. Devine
First, the results suggest that
IGSCC of sensitized 304 stainless steel occurs because of the formation of films of α-M2O3 along
sensitized grain boundaries.
Second, the results suggest that HWC is effective because HWC lowers the potential at crack tips to values less than -400 mV so that films of M3O4, rather than α-M2O3, form along sensitized grain boundaries.
The spectra at potentials above -750 mV display a number of potential-dependent changes.
Second, the results suggest that HWC is effective because HWC lowers the potential at crack tips to values less than -400 mV so that films of M3O4, rather than α-M2O3, form along sensitized grain boundaries.
The spectra at potentials above -750 mV display a number of potential-dependent changes.
Online since: July 2018
Authors: Denis V. Valuev, N.N. Malushin, Dmitriy P. Il’yaschenko, V.A. Trifonov, R.Yu. Nekrasov
Test conditions:
P = 1 MPa, friction rate 0.6 m/s, average abrasive grain size 0.06-0.08 mm (on electrocorundum grinding cloth of machine H4-B) and 0.05-0.25 mm (on НК machine).
Manual arc surfacing is characterized by a number of shortcomings, the main ones being the following: only skilled electric welders are required, since surfacing is performed at a minimum welding current in order to reduce base metal proportion in the weld deposit, furthermore it is necessary to ensure welded and base metals flash-off; severe working conditions; low productivity; large losses in fumes, spatter and electrode stubs (up to 30%).
The first provides limited heating time and increased cooling rate at high temperatures, prevents grain growth and austenite breakdown with formation of equilibrium low-strength structures.
Manual arc surfacing is characterized by a number of shortcomings, the main ones being the following: only skilled electric welders are required, since surfacing is performed at a minimum welding current in order to reduce base metal proportion in the weld deposit, furthermore it is necessary to ensure welded and base metals flash-off; severe working conditions; low productivity; large losses in fumes, spatter and electrode stubs (up to 30%).
The first provides limited heating time and increased cooling rate at high temperatures, prevents grain growth and austenite breakdown with formation of equilibrium low-strength structures.
Online since: February 2019
Authors: Abiodun Ayodeji Abioye, Oreofe Praise Oluwadare, Oluwabunmi Pamilerin Abioye
However, they are able to degrade to low molecular weight compounds like H2O and CO2 which are non-toxic by-products in living microorganisms, since additives have different benefits which include reduction in grain size and degradability [6, 8, 9, 11].
Degradation rate was calculated by finding the instantaneous degradation ratios as follows: (2) (3) Where Di = Instantaneous Degradation Ratio wx = Former weight wy = New weight Dt = Degradation Rate (% per day) N = Number of days Results and Discussion The results of the biodegradation ratio and biodegradation rates for the 6 LDPE/Ipomoea batatas blends are shown in Fig. 2 to 7.
Analysis of the shape and size of starch grains from different botanical species.
Degradation rate was calculated by finding the instantaneous degradation ratios as follows: (2) (3) Where Di = Instantaneous Degradation Ratio wx = Former weight wy = New weight Dt = Degradation Rate (% per day) N = Number of days Results and Discussion The results of the biodegradation ratio and biodegradation rates for the 6 LDPE/Ipomoea batatas blends are shown in Fig. 2 to 7.
Analysis of the shape and size of starch grains from different botanical species.
Online since: March 2019
Authors: Xiao Tian, Ojiyed Tegus, Wei Wei, Jing Yan, Xin Zhang, Zhan Quan Yao, Xin Xin Wan
It can be observed from Fig. 2 that the grain size of the alloy milled for 15 h is significantly smaller than that of the alloy milled for 2 h.
Fig. 4 Activation performance curves for different samples Table 2 Main electrochemical properties of the samples Samples Naa Cmaxb [mAh/g] C60c [ mAh/g] S60d [%] Emide [V] As-cast 5 299.5 273.2 91.2 0.841 1 h 6 295.4 255.3 86.4 0.869 2 h 3 313.5 247.8 79.0 0.873 3 h 3 295.3 250.3 84.8 0.867 5 h 2 286.3 235.0 82.1 0.866 15 h 2 310.7 227.0 73.1 0.857 a The cycle numbers needed to activate the alloy electrode.
The grain size of the alloy milled for 15 h is significantly smaller than that of the alloy milled for 2 h.
Fig. 4 Activation performance curves for different samples Table 2 Main electrochemical properties of the samples Samples Naa Cmaxb [mAh/g] C60c [ mAh/g] S60d [%] Emide [V] As-cast 5 299.5 273.2 91.2 0.841 1 h 6 295.4 255.3 86.4 0.869 2 h 3 313.5 247.8 79.0 0.873 3 h 3 295.3 250.3 84.8 0.867 5 h 2 286.3 235.0 82.1 0.866 15 h 2 310.7 227.0 73.1 0.857 a The cycle numbers needed to activate the alloy electrode.
The grain size of the alloy milled for 15 h is significantly smaller than that of the alloy milled for 2 h.
Online since: January 2019
Authors: Yuan Qin, Sen Yang, Ming Rui Zhang, Guang Yuan Wang, Dao Zhang
A large number of studies on the preparation of V2O3 powder have been published in recent years since the Japanese published the preparation technology of V2O3 for the first time in 1966.
During the heat treatment of precursor powder, the autogenic gas CO, CO2 overflowed from the powder structure could destroy the original structure and refine the grains by reducing the agglomeration between ions and inhibiting the growth of grain.
During the heat treatment of precursor powder, the autogenic gas CO, CO2 overflowed from the powder structure could destroy the original structure and refine the grains by reducing the agglomeration between ions and inhibiting the growth of grain.