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Online since: December 2012
Authors: Hai De Hu
RII = (CR/CT –R/S)*100 (1)
Where CR stands for the area of residential area contained in buffer zones; CT stands for the area of total residential area; R stands for the area of road buffer zones; S stands for the area of whole study region; The number 100 is used for converting to a percentage form.
Fig. 3 Increase rate of built-up area in Coastal Urban Belt in Liaoning In March of 2001 the Chinese government initiated a countrywide project – refer to as the Grain-for-Green Policy (GFGP) – help restore the ecological balance in mountainous areas by returning steep cultivated land to forest and pasture[8].
Characteristics of Steep Cultivated Land and the Impact of the Grain-for-Green Policy in China1.
Fig. 3 Increase rate of built-up area in Coastal Urban Belt in Liaoning In March of 2001 the Chinese government initiated a countrywide project – refer to as the Grain-for-Green Policy (GFGP) – help restore the ecological balance in mountainous areas by returning steep cultivated land to forest and pasture[8].
Characteristics of Steep Cultivated Land and the Impact of the Grain-for-Green Policy in China1.
Online since: October 2012
Authors: Hong Zhu Quan
As a matter of fact, the research of the GC residues just started in the cord about the IGCC system as for the coal gasifier because there were not a lot of numbers about the gas collection plant too much yet.
Mixing with classified particles controlled grain size distribution.
Table 2 Grain size distribution and physical property Under 5.0mm (%) Under 2.5mm (%) Under 1.2mm (%) Under 0.6mm (%) Under 0.3mm (%) Under 0.15mm (%) Density (g/cm3) BET (m2/g) Water absorption (%) Needle content (%) IGCC slag 93 84 39 8 2 1 2.45 0.10 0.6 0.5 Sewage sludge slag 94 65 26 13 4 1 2.52 0.22 1.5 0.6 Municipal waste slag 100 86 54 10 3 1 2.67 0.58 3.5 0.3 Ferro-nickel slag 99 55 22 5 1 0 2.89 0.12 0.8 0 River sand 96 88 59 38 22 8 2.79 1.75 1.4 0 Japaneses desirable sand 99-100 80-100 50-90 25-65 10-35 2-10 ≥2.5 - ≤3.0 - Table 3 : Cement production test's condition Unit of electric crushing power 19.7 kWh/t/clinker Volume of crush in mill 193t clinker/E Content of 0.09mm under particle 18% Output of mixing raw material 7160 t/day Using calorillic power 778 Kcal/kg HM value t=CaO/ SiO2+ Al2O3+ Fe2O3 2.15 Free lime content 0.40% Table 4 : Results from mortar test Water absorption (%) Mortar flow ratio (%) Mortar air content (%) Crack content (%) IGCC slag
Mixing with classified particles controlled grain size distribution.
Table 2 Grain size distribution and physical property Under 5.0mm (%) Under 2.5mm (%) Under 1.2mm (%) Under 0.6mm (%) Under 0.3mm (%) Under 0.15mm (%) Density (g/cm3) BET (m2/g) Water absorption (%) Needle content (%) IGCC slag 93 84 39 8 2 1 2.45 0.10 0.6 0.5 Sewage sludge slag 94 65 26 13 4 1 2.52 0.22 1.5 0.6 Municipal waste slag 100 86 54 10 3 1 2.67 0.58 3.5 0.3 Ferro-nickel slag 99 55 22 5 1 0 2.89 0.12 0.8 0 River sand 96 88 59 38 22 8 2.79 1.75 1.4 0 Japaneses desirable sand 99-100 80-100 50-90 25-65 10-35 2-10 ≥2.5 - ≤3.0 - Table 3 : Cement production test's condition Unit of electric crushing power 19.7 kWh/t/clinker Volume of crush in mill 193t clinker/E Content of 0.09mm under particle 18% Output of mixing raw material 7160 t/day Using calorillic power 778 Kcal/kg HM value t=CaO/ SiO2+ Al2O3+ Fe2O3 2.15 Free lime content 0.40% Table 4 : Results from mortar test Water absorption (%) Mortar flow ratio (%) Mortar air content (%) Crack content (%) IGCC slag
The Study of Epoxidation of Allyl Chloride Catalyzed by Silica-Based HTMS-3A in Chemical Engineering
Online since: October 2012
Authors: Xue Peng Liu, Dong Mei Zhao
Introduction
This subject is to be squeezed in the article the method of forming the preparation of a type load TS 1 catalyst of epoxy allyl chloride laboratory research, solve the molecular sieve grain size small, recycling, the difficult question, improve epichlorohydrin and chlorine propanediol yield, lower high boiling point by-products, using the technology for production of epichlorohydrin industrialization in chemical engineering.
NaOH content on the catalyst effect on the strength of broken When NaOH addition amount is low, because the dosage of the water must be, alkali concentration is not high, and there is a large part of the oxidation silicon and TS filling a 1 through the, the particles of the outer surface of the doesn't work, can not reach the glue dissolve effect; When NaOH addition amount of increase, the higher concentration, except with NaOH powder in the hole outside, still have enough NaOH exist in between particles and grain, make each other particles dissolve connection become fully glue; But, when NaOH quantity increased again, the surplus, not dissolve in glue, the ultimate strength of catalyst have no effect.
When the response time is 4 h, in TS a 1/510: the chlorine propylene glycol and high boiling the yield that there were a low and make epichlorohydrin selective peak, and for pure TS suck, because of chlorine propylene glycol and high boiling the yield of things has increased dramatically reduce the epichlorohydrin and the selective; When the response time is longer (6 h or sh) : catalytic reaction because of chlorine propylene glycol and the generation of high boiling content increases, epichlorohydrin selectivity declined, but the side effects of small speed up speed, and make the of epichlorohydrin yield increased slightly, as for pure TS one, although chlorine propanediol yield increase is not big, but because a large number of high boiling content generation and make of epichlorohydrin selective significantly reduced.
NaOH content on the catalyst effect on the strength of broken When NaOH addition amount is low, because the dosage of the water must be, alkali concentration is not high, and there is a large part of the oxidation silicon and TS filling a 1 through the, the particles of the outer surface of the doesn't work, can not reach the glue dissolve effect; When NaOH addition amount of increase, the higher concentration, except with NaOH powder in the hole outside, still have enough NaOH exist in between particles and grain, make each other particles dissolve connection become fully glue; But, when NaOH quantity increased again, the surplus, not dissolve in glue, the ultimate strength of catalyst have no effect.
When the response time is 4 h, in TS a 1/510: the chlorine propylene glycol and high boiling the yield that there were a low and make epichlorohydrin selective peak, and for pure TS suck, because of chlorine propylene glycol and high boiling the yield of things has increased dramatically reduce the epichlorohydrin and the selective; When the response time is longer (6 h or sh) : catalytic reaction because of chlorine propylene glycol and the generation of high boiling content increases, epichlorohydrin selectivity declined, but the side effects of small speed up speed, and make the of epichlorohydrin yield increased slightly, as for pure TS one, although chlorine propanediol yield increase is not big, but because a large number of high boiling content generation and make of epichlorohydrin selective significantly reduced.
Online since: June 2014
Authors: Mei Chen Fu, Xiang Min Liu
In the view of protecting China’s grain production safety, it is a waste of land resources.
It is a main grain production area of the town.
In the households who were no longer planting anything, only a small number of them let their relatives or friends plant crops on the idle lands.
It is a main grain production area of the town.
In the households who were no longer planting anything, only a small number of them let their relatives or friends plant crops on the idle lands.
Online since: August 2011
Authors: Fu Chi Wang, Shuang Zan Zhao, Xing Wang Cheng
The first annealing temperature is higher than ordinary annealing temperature, above or close to recrystallization temperature, making recrystallization sufficiently while grains not obvious grow up.
A number of important observations could be made from these curves.
The grains with adiabatic shear deformation are badly stretched, resulting in clear shear deformation streamlines extending along shear direction.
A number of important observations could be made from these curves.
The grains with adiabatic shear deformation are badly stretched, resulting in clear shear deformation streamlines extending along shear direction.
Online since: April 2015
Authors: Joanna Karwan-Baczewska, Iwona Sulima, Magdalena Suśniak
The use of conventional sintering methods to consolidate composite powder often results in grain growth which affects the properties of the end product.
Minimizing grain growth of the matrix is possible through carefully control of consolidation parameters, particularly heating rate, sintering temperature, and time of process.
The financial support of the State Committee for Scientific Research of Poland under the grand number 11.11.180.653 is acknowledged.
Minimizing grain growth of the matrix is possible through carefully control of consolidation parameters, particularly heating rate, sintering temperature, and time of process.
The financial support of the State Committee for Scientific Research of Poland under the grand number 11.11.180.653 is acknowledged.
Online since: July 2015
Authors: Qi Long Wei, Bo Liu, Xiao Feng Zhang, Xiao Bin Yue, Xiao Yuan Li, Da Jiang Lei
indentation number
HIT[GPa]
EIT[GPa]
hmax[nm]
S[mN/nm]
1
71.311
1093.7
47.51
0.1740
2
70.565
1233.8
46.64
0.1857
3
73.155
1268.9
44.58
0.1847
4
67.101
1235.7
48.72
0.1902
5
68.250
1410.6
46.63
0.2004
6
71.026
1141.1
47.20
0.1781
7
69.896
1169.5
47.63
0.1817
Average value
70.186
1221.9
46.99
0.1850
SD
2.012
103.2
1.28
0.0086
RSD (%)
2.87
8.44
2.72
4.65
After the first group indentations on the diamond sample, the indenter was checked with fused silica.
Shin, et al, Grain size dependent physical and chemical properties of thick CVD diamond films for high energy density physics experiments, Diamond Relat.
Flöter, et al, Grain size dependent mechanical properties of nanocrystallineline diamond films grown by hot-filament CVD, Diamond Relat.
Shin, et al, Grain size dependent physical and chemical properties of thick CVD diamond films for high energy density physics experiments, Diamond Relat.
Flöter, et al, Grain size dependent mechanical properties of nanocrystallineline diamond films grown by hot-filament CVD, Diamond Relat.
Online since: July 2014
Authors: S. Suresh, N. Shenbaga Vinayaga Moorthi, E.S. Esakkiraj, M. Krishna Kumar, S.M. Jenin Ranjith
Test carried out on the fabricated composite included XRD, metallographic study, EDAX analysis, micro hardness, density distribution, grain size analysis, wear and tensile strength.
Place the grinding balls of 100 numbers in the empty bowl and fill the TiB2 powder to be ground on the balls .Grinding bowls can be filled and then closed with the help of the additional clamping system in a box and then setting the speed of 300 rpm, running time 15 minutes, breaking time 5 minutes, repetition of grinding 4 cycle for grinding 1 hour.
Parashivamurthy, Grain refinement and wear properties evaluation of aluminum alloy 2014 matrix- TiB2 in-situ composites, in Materials and Design, 2011, vol.32, pp.3554-3559
Place the grinding balls of 100 numbers in the empty bowl and fill the TiB2 powder to be ground on the balls .Grinding bowls can be filled and then closed with the help of the additional clamping system in a box and then setting the speed of 300 rpm, running time 15 minutes, breaking time 5 minutes, repetition of grinding 4 cycle for grinding 1 hour.
Parashivamurthy, Grain refinement and wear properties evaluation of aluminum alloy 2014 matrix- TiB2 in-situ composites, in Materials and Design, 2011, vol.32, pp.3554-3559
Online since: September 2005
Authors: B. Wang, Guo Xing Lu
The higher value of the Vickers Number for the base material is due to the upper end of
the scale of carbon content for that of mild steel.
(a) (b) One more important observation should be noted from Fig. 1 is that the grain structure towards the top of the weld is noticeably coarser than that in the middle/bottom of the weld.
The lower beads of weld have all been individually re-heated due to the subsequent layers of weld, which of course causes microstructural changes such as recrystalisation and grain size reduction.
(a) (b) One more important observation should be noted from Fig. 1 is that the grain structure towards the top of the weld is noticeably coarser than that in the middle/bottom of the weld.
The lower beads of weld have all been individually re-heated due to the subsequent layers of weld, which of course causes microstructural changes such as recrystalisation and grain size reduction.
Online since: March 2008
Authors: Jun Li, Wen Ge Li, Guang Jun Zhang
Other than, the cooling rate dtdT / is biggest, which makes the
grains in the diluted zone is very fine.
The mechanism of cracking resistance can explained by fine grain strengthening and second phase strengthening. 200 400 600 800 1000 1200 1400 1600 1800 2000 -320 -280 -240 -200 -160 -120 -80 -40 Free Energy/KJ Temperature/K Fe2Ti FeB Ni3Ti TiB Ni4B3 TiB2 Fig.3 Relation between free energy and temperature Fig.4 The cross-section of the coating treated by the of possible reactions in laser coating thermal shock experiment Summary The TiB2 phase could be synthesized in laser clad Ti+B+WC+Ni based alloy.
In the middle and bottom parts, a number of white WC particles are present and are comparatively coarse, other than, a small amount of fine TiB2 are observed.
The mechanism of cracking resistance can explained by fine grain strengthening and second phase strengthening. 200 400 600 800 1000 1200 1400 1600 1800 2000 -320 -280 -240 -200 -160 -120 -80 -40 Free Energy/KJ Temperature/K Fe2Ti FeB Ni3Ti TiB Ni4B3 TiB2 Fig.3 Relation between free energy and temperature Fig.4 The cross-section of the coating treated by the of possible reactions in laser coating thermal shock experiment Summary The TiB2 phase could be synthesized in laser clad Ti+B+WC+Ni based alloy.
In the middle and bottom parts, a number of white WC particles are present and are comparatively coarse, other than, a small amount of fine TiB2 are observed.