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Online since: April 2021
Authors: Konstantin D. Naumov, V.G. Lobanov
An increase in zinc concentration leads to an increase in average grain size of formed nuclei and to a decrease in specific surface of zinc powder, which can negatively affect to subsequent gold cementation.
Apparently, elongated form of dendrites leads to a large number of voids between individual particles.
Apparently, elongated form of dendrites leads to a large number of voids between individual particles.
Online since: October 2021
Authors: Chi Hui Tsou, Zheng Lu Ma, Jui Chin Chen, Yan Mei Wang, Xin Yuan Tian, Chen Gao
The addition of ATT increases the water absorption rate because ATT is a porous material and contains a large number of hydroxyl groups with relatively hydrophilic groups.
Evaluating distillers grains as bio-fillers for high-density polyethylene[J].
Evaluating distillers grains as bio-fillers for high-density polyethylene[J].
Online since: June 2015
Authors: Viktor P. Kuznetsov, Andrei S. Skorobogatov, V.G. Gorgots
Recently, a number of research works connected with development and investigation of various ways of heat removal from the tool have been carried out.
Application of this cooling system has provided for an increase of the peak speed of cemented hard steel 20Х (55 HRC) burnishing by the tool with the indenter tip made from ultra-fine grain cubic boron nitride (DBN) up to 20 m/min.
Application of this cooling system has provided for an increase of the peak speed of cemented hard steel 20Х (55 HRC) burnishing by the tool with the indenter tip made from ultra-fine grain cubic boron nitride (DBN) up to 20 m/min.
Online since: May 2012
Authors: Hui Qiao Gao, Li Na Guo
(Table 2)
Table 1 Ecological capacity of yantai based on energy value(2008)
Projet
Raw data
(j)
Energy conversion rate(sej/j)
Solar energy
(sej)
Per capita energy
(sej)
Per capita capacity
(hm2)
Solar energy
1.47E+20
1E+0
1.47E+20
2.256E+13
0.073
Wind power
1.93E+17
6.63E+2
1.28E+20
1.964E+13
0.063
Rain potential
3.92E+15
8.88E+3
3.484E+19
5.346E+12
0.0172
Rain compounds
3.89E+15
1.82E+4
7.08E+20
1.086E+14
0.35
Earth rotates energy
1.567.16
2.90E+4
4.54E+20
6.973E+13
0.225
Tidal energy
1.34E+16
2.365E+14
3.169E+20
4.863E+13
0.157
Ecological Capacity
1.0249E+21
0.507
Table 2 Ecological footprint of yantai based on the energy analysis(2008)
Project
Raw data
(j)
Energy conversion rate(sej/j)
Solar energy(sej)
Per capita energy
(sej)
Per capita the ecological footprint(hm2)
Land type
Biological resources
11.847
Grain
2.407E+16
8.3E+4
1.998E+21
3.066E+14
0.411
Farmland
Vegetables
2.657E+16
2.7E+4
7.174E+20
1.101E+14
0.148
Farmland
Melons
4.352E+16
5.30E+4
2.307E
The forest coverage rate would be much less if the number of fruit trees were deducted from the forest
The forest coverage rate would be much less if the number of fruit trees were deducted from the forest
Online since: September 2015
Authors: Kazimierz Zaleski, Jakub Matuszak
The force values (N) for particular penetration depth of the brush measured for 8 tools
Penetration depth Δ
Value of dynamic radius Dd/2 (mm)
62,6
62,8
62,2
62,4
62,6
62,5
62,3
62,3
(mm)
Force F (N)
0
0,1
0,1
0,1
0,1
0,1
0,1
0,1
0,1
0,1
0,3
0,2
0,2
0,3
0,2
0,3
0,3
0,2
0,2
0,6
0,4
0,5
0,6
0,5
0,7
0,7
0,4
0,3
0,9
0,8
0,8
0,9
0,7
1,1
1,1
0,6
0,5
1,7
1,9
1,4
1,7
1,3
2
2,2
1,4
1
4,6
5
3,6
4,3
3,7
5,5
4,9
3,8
3
22
23
18,1
21
25
28,6
28
22,1
Tool number
1
2
3
4
5
6
7
8
As to repeatability of results after brushing, it is important that for the particular value of penetration depth, after brush change to new one, the forces will have the same values for all brushes of the same type.
Lal, Experimental investigation into cutting forces and active grain density during abrasive flow machining, International Journal of Machine Tools and Manufacture, 44, 2-3 (2004) 201-211
Lal, Experimental investigation into cutting forces and active grain density during abrasive flow machining, International Journal of Machine Tools and Manufacture, 44, 2-3 (2004) 201-211
Online since: March 2008
Authors: Xiao Qiang Pan, Jian Jun Wang
At present, modern surface
engineering techniques have been extensively applied to a good number of industrial fields
concerning national economy.
In detail, there are the following factors that affect atmospheric corrosion, i.e., relative humidity, temperature, difference in temperature, acerbity, alkali, salt, corrosive gases, solid grains, and state of metal surface and so on.
In detail, there are the following factors that affect atmospheric corrosion, i.e., relative humidity, temperature, difference in temperature, acerbity, alkali, salt, corrosive gases, solid grains, and state of metal surface and so on.
Online since: November 2007
Authors: Kyuh Wan Chang, Scott Bolton, Marc Rossow, Rich Gregory, Jack Jiang, Dharmesh Jawarani, Stefan Zollner, Dean Denning, Jon Cheek
In our model, the minimum number of layers to achieve a
good fit was chosen [6].
This is consistent with larger grain size and thus lower resistance than NiSix obtained from an RF sputter preclean.
This is consistent with larger grain size and thus lower resistance than NiSix obtained from an RF sputter preclean.
Online since: November 2014
Authors: Jariah Mohd Juoi, Zulkifli Mohd Rosli, Nur Hamizah Ahmad Rusli, Mazidah Zainudi
The images indicate better dispersion of Ag with less agglomeration throughout its surface and also indicate that the silver nanoparticles are homogeneously distributed in TiO2 grains.
It is seen that the coating thicknesses varied with different ceramic substrates composition though coated with the same number of layers.
It is seen that the coating thicknesses varied with different ceramic substrates composition though coated with the same number of layers.
Online since: October 2011
Authors: Norhamidi Muhamad, Khairur Rijal Jamaludin, Heng Shye Yunn, Sri Yulis M. Amin, Abdolali Fayyaza
Introduction
Cemented carbide (WC-Co) consists of tungsten carbide grains embedded in a metal binder phase.
Although the difference in WC and Co wt-% is not so significant between both cases, it is found that the best sample is number 3, powder denoted as 250-60 (for rotation speed 250rpm and 60 minutes).
Although the difference in WC and Co wt-% is not so significant between both cases, it is found that the best sample is number 3, powder denoted as 250-60 (for rotation speed 250rpm and 60 minutes).
Online since: January 2013
Authors: Kitsakorn Locharoenrat, Amorn Thedsakhulwong, Warawoot Thowladda
Due to these specific properties, AlN thin films have drawn considerable interest and large numbers of publications have been devoted on their film preparations under various substrates.
The grain sizes tended to decrease significantly when increasing CN.
The grain sizes tended to decrease significantly when increasing CN.