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Online since: December 2012
Authors: Wei Wang, Xiu Wang, Yang Xu, Xiu Ying Tang, Yi Zhe Chen, Yan Kun Peng, Wei Long Yang
And this system could directly be used for data storage module in grain yield measurement system if it modified.
So it is easy to change rotate speed only by changing the number of pulses of stepper motor output.
Therefore, fertilization shaft rotate speed calculation formula is: (4) Where, n is the fertilizer shaft rotate speed (rpm); m is the number of pulses (pulses/s); s is micro-stepping numbers; x is the reducer transmission ratio.
When the fertilizer needs of farmland districts are determined, the number of the outputted farm machinery moving speed adjustment pulse supplied by speed sensor accommodates the fertilization rate.
Experiment Process and Results Inputed field number 0 and needed fertilization rate (N: 30g, P: 20g; K: 15g) to control system input interface by the matrix keyboard (Fig.2).
So it is easy to change rotate speed only by changing the number of pulses of stepper motor output.
Therefore, fertilization shaft rotate speed calculation formula is: (4) Where, n is the fertilizer shaft rotate speed (rpm); m is the number of pulses (pulses/s); s is micro-stepping numbers; x is the reducer transmission ratio.
When the fertilizer needs of farmland districts are determined, the number of the outputted farm machinery moving speed adjustment pulse supplied by speed sensor accommodates the fertilization rate.
Experiment Process and Results Inputed field number 0 and needed fertilization rate (N: 30g, P: 20g; K: 15g) to control system input interface by the matrix keyboard (Fig.2).
Online since: August 2004
Authors: Laurent Antoni
Coherent growth of precipitates,
formation of inhomogeneous composition phase boundaries, local ordering or micro-domain
formation and changes to the composition of the grain boundary phase also affect the long term
conductivity of the electrolyte [7].
Fig. 3 : Interface regions at 850°C of the YSZ electrolyte and cermet Ni/YSZ a) elaborated with 'pure' NiO powder containing <0.2 impurities after 1500h in H2-3%H2O b) elaborated with NiO powder containing 0.4% impurities (such as Si, Na, K, Al) after 1800h in H2-1%H2O (A) YSZ grains, (B) impurity phase, and (C) opened grain boundaries.
The white elements in the opened grain boundaries are Ni-rich phase [36] Alternative materials with mixed ionic-electronic conductivity (MIEC) have been proposed as potential SOFC anodes.
Because the reactivity problems of YSZ are not found in the GDC system, a much larger number of cathode options are available for SOFCs based on the GDC electrolyte.
Conclusion The increasing number of published studies or conferences dedicated to SOFCs over the past recent years reflects the great interest in the SOFC technology which constitutes a real alternative for relatively clean distributed power generation.
Fig. 3 : Interface regions at 850°C of the YSZ electrolyte and cermet Ni/YSZ a) elaborated with 'pure' NiO powder containing <0.2 impurities after 1500h in H2-3%H2O b) elaborated with NiO powder containing 0.4% impurities (such as Si, Na, K, Al) after 1800h in H2-1%H2O (A) YSZ grains, (B) impurity phase, and (C) opened grain boundaries.
The white elements in the opened grain boundaries are Ni-rich phase [36] Alternative materials with mixed ionic-electronic conductivity (MIEC) have been proposed as potential SOFC anodes.
Because the reactivity problems of YSZ are not found in the GDC system, a much larger number of cathode options are available for SOFCs based on the GDC electrolyte.
Conclusion The increasing number of published studies or conferences dedicated to SOFCs over the past recent years reflects the great interest in the SOFC technology which constitutes a real alternative for relatively clean distributed power generation.
Online since: March 2020
Authors: Oluwole Daniel Makinde, Gurrampati Venkata Ramana Reddy, Kolli Vijaya
The Skin-friction, Nusselt number and Sherwood number are discussed in detail.
Introduction Mass transfer and Coupled heat effectshave tremendous engineering applicationssuch as grain storage installations, chemical catalytic reactors, filtrationprocessesand diffusion of medicine in blood veinsthrough the air contained in fibrous insulation [1].
The effect of Schmidt number (Sc), magnetic parameter (M), Grashof number and modified Grashof nuber (Gr, Gm) on Skin-friction, Nusselt number and Sherwood number.
The Schmidt number (Sc), magnetic parameter (M), Grashof number and modified Grashof number (Gr,Gm) are increases then Skin-friction, Nusselt number and Sherwood number increases. when Casson parameter increases, the Skin-friction, Nusselt number and Sherwood number decreases.
The remaining parameters like radiation, Prandtl number, chemical reaction parameter, Soret number and biot number are increases then Skin-friction, Nusselt number and Sherwood number are also increases.
Introduction Mass transfer and Coupled heat effectshave tremendous engineering applicationssuch as grain storage installations, chemical catalytic reactors, filtrationprocessesand diffusion of medicine in blood veinsthrough the air contained in fibrous insulation [1].
The effect of Schmidt number (Sc), magnetic parameter (M), Grashof number and modified Grashof nuber (Gr, Gm) on Skin-friction, Nusselt number and Sherwood number.
The Schmidt number (Sc), magnetic parameter (M), Grashof number and modified Grashof number (Gr,Gm) are increases then Skin-friction, Nusselt number and Sherwood number increases. when Casson parameter increases, the Skin-friction, Nusselt number and Sherwood number decreases.
The remaining parameters like radiation, Prandtl number, chemical reaction parameter, Soret number and biot number are increases then Skin-friction, Nusselt number and Sherwood number are also increases.
Online since: October 2010
Authors: Xiang Dong Huo, Zhang Guo Lin, Yu Tao Zhao, Yu Qian Li
At the same time, the prior austenite grain boundary is gradually obvious.
But Fang et al [8] suggested that the steels with granular bainite may possess a good combination of strength and toughness, which relays on the number and sizes of islands in granular bainite.
But Fang et al [8] suggested that the steels with granular bainite may possess a good combination of strength and toughness, which relays on the number and sizes of islands in granular bainite.
Online since: June 2012
Authors: Hai Dong Yang, Zhi Ding
Large plastic deformation, seriously work hardening, a large number of cutting heat, cooling difficulties and other problems will appear in the production process [5].
PVD coated cemented carbide inserts, usually with fine-grained carbide blade substrate material and high temperature resistant coating (such as nano-TiAlN,its nano-coating structure refer to Fig. 1), which make it not only has high toughness and hardness, but also has good thermal stability and chemical stability; its unique coating process make the cutter has a smooth surface and good wear resistance.
PVD coated cemented carbide inserts, usually with fine-grained carbide blade substrate material and high temperature resistant coating (such as nano-TiAlN,its nano-coating structure refer to Fig. 1), which make it not only has high toughness and hardness, but also has good thermal stability and chemical stability; its unique coating process make the cutter has a smooth surface and good wear resistance.
Online since: October 2012
Authors: Jing Dong, He Teng Wang
In order to keep the system at a constant medium conditions, we constantly change the medium to keep the nutritional composition constant (each media replacement may lose a small number of cells causing error due to the operation) and different replacement frequency analog different input speed of nutrients.
Department of Grain Science and Industry, College of Agriculture Kansas State University, Manhattan, Kansas, 2006
Department of Grain Science and Industry, College of Agriculture Kansas State University, Manhattan, Kansas, 2006
Online since: October 2011
Authors: Yue Zhong Lin
Experiment design
Original materials
Concrete material
The cement is Portland cement of 52.5,Macadam is grain of 5~20mm in thistle county, density 2.8 kg/cm3.
Table 4 Column’s axis direction load ability Type Circulating number 0 35 70 105 140 Z1 420 330 366 393 320 Z2 340 210 229 241 212 Z3 345 220 295 305 251 Note: load unit is kN.
Table 4 Column’s axis direction load ability Type Circulating number 0 35 70 105 140 Z1 420 330 366 393 320 Z2 340 210 229 241 212 Z3 345 220 295 305 251 Note: load unit is kN.
Online since: March 2011
Authors: Sergey I. Sidorenko, Lesya Demchenko
Besides, the contribution to the total mass transfer at the expense of grain-boundary diffusion need to be considered.
The maximum of number of mobile dislocations which can transfer the interstitials by the dislocation-dynamic mechanismin was found in the range of deformation 10-15 % [9, 10].
The maximum of number of mobile dislocations which can transfer the interstitials by the dislocation-dynamic mechanismin was found in the range of deformation 10-15 % [9, 10].
Online since: October 2012
Authors: Farihan M. Azizan, Mohd Yusry Mustafa, Hadi Purwanto
A numbers of author showed that some of the important trends have present regarding the relationship the relationship between mechanical properties and microstructure of Zinc-Aluminium alloy but it sufficient information available on the information on Zinc-Tin alloy.
The improvement in tensile strength and elongation could be ascribed by grain size increment.
The improvement in tensile strength and elongation could be ascribed by grain size increment.
Online since: January 2013
Authors: Zhi Cheng Lu
(4) Other types of vibration isolation system: foam rubber, foam plastic, soft wood, felt, sawdust and fine-grained sand, applicable for small apparatus and instrument.
3 Design essential for vibration isolator [2]
(1) Design the acting point of exciting force near the centroid of facility to prevent swinging; ensure that the sum of elastic moments around the centroid is close to zero, i.e. identical deformation, to stabilize the elastic support
(2) Arrange the springs symmetrically about the centroid, odd number of springs in each row, to facilitate adding or removing 1-2 springs during debugging.
(2) Arrange the springs symmetrically about the centroid, odd number of springs in each row, to facilitate adding or removing 1-2 springs during debugging.