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Online since: May 2020
Authors: Wijianto Wijianto, Agus Dwi Anggono, Rizka Dwi Setiawan, Novan Dwi Kartika, Agung Setyo Darmawan, Pramuko Ilmu Purboputro, Masyrukan Masyrukan, Agus Yulianto
Graphite growth results in a reduction in the concentration of carbon in the alloy so that eventually it will remain spherical graphite between the austenite grains which will be transformed into pearlite.
Increasing the number of pearlite phase means an increase of cementite phase in the material.
Increasing the number of pearlite phase means an increase of cementite phase in the material.
Online since: June 2017
Authors: Ji Xue Zhou, Bai Chang Ma, Yuan Sheng Yang, Yun Teng Liu, Di Zhang, Tao Lin
Despite a large number of fundamental efforts were dedicated to the DRX behaviors of the Mg alloys, few works were conducted to apply the DRX models into the FE analysis of the practical extrusion process.
The grain size is fine.
The grain size is fine.
Online since: February 2013
Authors: Hai Quan Su, Shang Hong Zeng, Shi Yong Yu, Feng Hua Bai, Ning Ding, Tian Jia Chen
It was obvious that the appropriate addition of ZrO2 could enhance the BET surface area of Co/Al2O3 catalysts, possible because ZrO2 prevented Al2O3 to generate the large grains.
It could be seen that the olefin/paraffin ratios decreased with the increase of carbon number, indicating that the content of olefins decreased and the content of paraffins increased.
It could be seen that the olefin/paraffin ratios decreased with the increase of carbon number, indicating that the content of olefins decreased and the content of paraffins increased.
Online since: July 2011
Authors: Xing Hua Han, Giulioantonio Longo, Giovanni Paolo Zanon, Elisabetta Gariboldi
As a matter of fact, solid state diffusion is related by crystallographic orientation of the phase within which it occurs and orientation relationships between lattices in a layered structure exist: (for the present case <100>g‘// <100>g, while the interface requirement (111)g‘//(110)β are met by three specific β grain orientations with respect to the substrate lattices [4]).
Nevertheless, the limited number of available experimental data prevented the authors from confirming this trend and proposing a reliable thickness-time correlation.
Nevertheless, the limited number of available experimental data prevented the authors from confirming this trend and proposing a reliable thickness-time correlation.
Online since: May 2012
Authors: Yao Zhi Huang
The spatial morphology of towns formed under such principle of organization shows delicate patterns and fine grain and quality.
Suburban rural areas first accept the city expansion, while taking advantage of a large number of surplus labor, promoting the development of township enterprises, implementing economic and demographic transfer to the nearest space and small-scale aggregation, and thus promoting the expansion of many small towns and the formation and development of new towns. (2) Structural Morphology Features of Modern Towns - Fragmentation.
Suburban rural areas first accept the city expansion, while taking advantage of a large number of surplus labor, promoting the development of township enterprises, implementing economic and demographic transfer to the nearest space and small-scale aggregation, and thus promoting the expansion of many small towns and the formation and development of new towns. (2) Structural Morphology Features of Modern Towns - Fragmentation.
Online since: May 2011
Authors: Parisa Ahadi
A low energy house has a high degree of thermal insulation and a minimum number of thermal bridges, reduced infiltrations and uses solar resources and recovery of the heat for achieving these levels of conserving energy [6].
Table 2 Aerogel characteristics [6] Size of tiles 7.00*7.00[cm] Thickness of tiles ~1.4 [cm] Total mass of tiles ~11.5[g] Density tiles 0.16 – 0.17 [] Aerogel type hydrophilic Thermal conductivity, λ (not evacuated) 0.017 [W/mK] Thermal conductivity, λ (evacuated) 0.007 [W/mK] Limit temperature at start of shrinkage ~700 [°C] Grain (main size) 5 – 10 [nm] Pore (main size) 20 – 30 [nm] These products allow architects to overcome design challenges while meeting today’s strict energy and building code requirements.
Table 2 Aerogel characteristics [6] Size of tiles 7.00*7.00[cm] Thickness of tiles ~1.4 [cm] Total mass of tiles ~11.5[g] Density tiles 0.16 – 0.17 [] Aerogel type hydrophilic Thermal conductivity, λ (not evacuated) 0.017 [W/mK] Thermal conductivity, λ (evacuated) 0.007 [W/mK] Limit temperature at start of shrinkage ~700 [°C] Grain (main size) 5 – 10 [nm] Pore (main size) 20 – 30 [nm] These products allow architects to overcome design challenges while meeting today’s strict energy and building code requirements.
Online since: July 2011
Authors: Joong Kuen Park, Zhi Jian Zhang
Introduction
Equal channel angular extrusion (ECAE) [1] is an effective technique to produce ultra-fine grained bulk materials.
Acknowledgements Authors are grateful to the Korea Science and Engineering Foundation for their financial support of this research through the grant number R01-2005-000-11247-0.
Acknowledgements Authors are grateful to the Korea Science and Engineering Foundation for their financial support of this research through the grant number R01-2005-000-11247-0.
Online since: December 2013
Authors: Yong Gang Li, Yue Ning Li, Zhi Guang Cheng
The roughly same magnetic field line distribution of electromagnetic barrier in the load condition appears in the no-load mirror model applying same-direction current excitation, and no leakage magnetic flux into the electric shielding.
3.Shielding modeling
M- and MEM-type shields are composed of grain-oriented (GO) silicon steel laminations.
The effective section is 3.822×10-6 m2, the conductivity is 6.026×107 S/m and the number of turns is 130. 6.Result and analysis Table1 Measured and calculated loss results of M-type shield and magnetic plate voltage (V,rms) calculated loss(W) measured loss (W) Iron loss Loss in plate 100 1.12 1.65 2.67 150 2.41 3.47 5.76 200 4.00 5.93 10.12 Table2 Measured and calculated loss results of MEM-type shield and magnetic plate voltage (V,rms) calculated loss(W) measured loss (W) Additional iron loss Iron loss Total loss Loss in plate 100 5.44 2.35 7.79 1.99 11.25 150 17.23 4.37 21.60 3.36 28.17 200 40.23 7.46 47.69 7.48 65.86 Table3 Measured and calculated loss results of EM-type shield and magnetic plate voltage (V,rms) calculated loss(W) measured loss (W) Loss in shield Loss in plate 100 48.32 31.88 91.35 150 106.10 72.85 196.97 200 183.33 136.47 340.52 Fig.7 Flux density distribution curve of magnetic shiled Fig.8 Field distribu
The effective section is 3.822×10-6 m2, the conductivity is 6.026×107 S/m and the number of turns is 130. 6.Result and analysis Table1 Measured and calculated loss results of M-type shield and magnetic plate voltage (V,rms) calculated loss(W) measured loss (W) Iron loss Loss in plate 100 1.12 1.65 2.67 150 2.41 3.47 5.76 200 4.00 5.93 10.12 Table2 Measured and calculated loss results of MEM-type shield and magnetic plate voltage (V,rms) calculated loss(W) measured loss (W) Additional iron loss Iron loss Total loss Loss in plate 100 5.44 2.35 7.79 1.99 11.25 150 17.23 4.37 21.60 3.36 28.17 200 40.23 7.46 47.69 7.48 65.86 Table3 Measured and calculated loss results of EM-type shield and magnetic plate voltage (V,rms) calculated loss(W) measured loss (W) Loss in shield Loss in plate 100 48.32 31.88 91.35 150 106.10 72.85 196.97 200 183.33 136.47 340.52 Fig.7 Flux density distribution curve of magnetic shiled Fig.8 Field distribu
Online since: April 2014
Authors: Yu Xia Luo, Jian Fei Zhang, Ai Hua Sun, Cheng Yi Chu, Shi Zhou, Jian Jun Guo, Gao Jie Xu
The morphology and grain size of the samples were examined by a Hitachi S4800 field emission scanning election microscope (FESEM) and FEI Tecnai G2 F20 transmission electron microscope (TEM).
The number of periodic colloidal layers stacked on electrode surface is varied proportional to the electric field gradient, and the thickness change directly affects the intensity of reflection [21].
The number of periodic colloidal layers stacked on electrode surface is varied proportional to the electric field gradient, and the thickness change directly affects the intensity of reflection [21].
Online since: August 2013
Authors: Mohammad Reza Mohammad Aliha, Hamid Behbahani, Hassan Fazaeli, Somayeh Aghajani
Physical properties of the base bitumen
Test results
Unit
Standard test
Test
1.03
gr/cm3
ASTM D70
Specific Gravity (25 °C)
308
°C
ASTM D92
Flash Point (Cleveland)
62
°C
ASTM D5
Penetration (25 °C)
100
cm
ASTM D113
Ductility (25 °C)
49
°C
ASTM D36
Softening point
810
mm2/s
ASTM D2170
Kinematic Viscosity @ 120 °C
420
mm2/s
ASTM D2170
Kinematic Viscosity @ 135 °C
232
mm2/s
ASTM D2170
Kinematic Viscosity @ 150 °C
–1.12
–
–
Penetration index (PI)a
–0.56
–
–
Penetration Viscosity Number ( PVN)b
a PI = [1952 – 500 log (Pen25) – 20SP] / [50 log (Pen25) – SP – 120]
b PVN = [–6.387 + 1.195 log (Pen25) + 1.5 log (Visco135)] / [0.79511 – 0.1858 log (Pen25)]
Additives .
Characterizations of Crumb Rubber Modifier used in this study Characteristics Description Moisture content 0.1% Maximum grain size 0.4 mm Unit weight 0.31 gr/cm3 Ash content 10% Styrene–Butadiene–Styrene (SBS) The SBS used in this study was produced by Dynasol co.
Characterizations of Crumb Rubber Modifier used in this study Characteristics Description Moisture content 0.1% Maximum grain size 0.4 mm Unit weight 0.31 gr/cm3 Ash content 10% Styrene–Butadiene–Styrene (SBS) The SBS used in this study was produced by Dynasol co.