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Online since: June 2014
Authors: Qing Gao, Guo Hua Wang, Tian Shi Zhang, Qi Yi Wang, Chun Gao
Heat
/kJ·kg-1·K-1
Thermal Conductiviy Solid /W·m-1·K-1
Thermal Conductiviy Liquid /W·m-1·K-1
25
200
1.6
2.1
1.1
0.6
36
232
1.5
2.0
0.6
0.5
58
235
1.4
2.5
1.9
1.0
2.2 experimental system
(a) System diagram (b) Temperature measuring points arrangement
Figure 1 The experimental system diagram and temperature measuring point layout
As shown in figure 1 (a), the experiment system by the energy storager, data collection system, water tank, fan, pump, turbine flowmeter, thermocouple, manifold, control valve, etc.
Internal spherical monomer as shown in figure 1 (b), decorate two temperature measuring point I and II, respectively, is located in the center of sphere diameter and length of 1/4. 3 Experimental Data Collection and Analysis This section mainly studied the melting point of the ball, the medium flow's influence on the heat storage properties, melting point, traffic different ball performance difference is bigger. 3.1 Medium flow rate As shown in figure 2, 3, in view of the three kinds of PCM in different flow rate of 5 L/min and 1.333 L/min contrast, heat storage process can be seen, within the scope of experiment with the increase of traffic to the main storage, process release rate has been increased significantly.
Development of a Method for the Long-Term Efficiencyand Cost Evaluation of Mobile Idle-Reduction Technologies (MIRT).
Internal spherical monomer as shown in figure 1 (b), decorate two temperature measuring point I and II, respectively, is located in the center of sphere diameter and length of 1/4. 3 Experimental Data Collection and Analysis This section mainly studied the melting point of the ball, the medium flow's influence on the heat storage properties, melting point, traffic different ball performance difference is bigger. 3.1 Medium flow rate As shown in figure 2, 3, in view of the three kinds of PCM in different flow rate of 5 L/min and 1.333 L/min contrast, heat storage process can be seen, within the scope of experiment with the increase of traffic to the main storage, process release rate has been increased significantly.
Development of a Method for the Long-Term Efficiencyand Cost Evaluation of Mobile Idle-Reduction Technologies (MIRT).
Online since: June 2010
Authors: Oksana Ganpantsurova, Aleksandr Gubarev
At the same time for predicting operational
efficiency of the windmill the data are necessary for some years ahead.
The hydrosystem should transfer a stream of power at several wind turbine operating modes, in other words, provide stable operation and minimal energy losses, as for minimal so the maximal value of power (thus, according to the data gained during structural optimization, values of power can change tenfold).
Functional graph of flexible operation of the system: 1 - connection of the generator with rated power N1; 2 - connection of the generator with rated power N2; 3, 5, 7 - turning on of memory elements which fix the raise of pressure; 4, 6, 8 - turning on of memory elements which fix the pressure reduction; 9 - connection of the additional pump Q, cm 3/s V, m/sec V, m/s р, MPa Fig. 4.
The hydrosystem should transfer a stream of power at several wind turbine operating modes, in other words, provide stable operation and minimal energy losses, as for minimal so the maximal value of power (thus, according to the data gained during structural optimization, values of power can change tenfold).
Functional graph of flexible operation of the system: 1 - connection of the generator with rated power N1; 2 - connection of the generator with rated power N2; 3, 5, 7 - turning on of memory elements which fix the raise of pressure; 4, 6, 8 - turning on of memory elements which fix the pressure reduction; 9 - connection of the additional pump Q, cm 3/s V, m/sec V, m/s р, MPa Fig. 4.
Online since: May 2006
Authors: Rejane A. Nogueira, Francisco Ambrozio Filho, João Franklin Liberati, Waldemar Alfredo Monteiro, Iara M. Esposito, Oscar O. Araujo Filho
Table 2 presents the
density and viscosity data of the binder components.
Table 1 - Particle size distribution of AISI T15 powder, manufacturer data.
It is possible to observe a pseudo-plastic behavior, i.e, a reduction of viscosity with the shear rate, what it is favorable for the injection process [1, 5], and this behavior remained for a long period.
Table 1 - Particle size distribution of AISI T15 powder, manufacturer data.
It is possible to observe a pseudo-plastic behavior, i.e, a reduction of viscosity with the shear rate, what it is favorable for the injection process [1, 5], and this behavior remained for a long period.
Online since: September 2014
Authors: Ying Hua Yu, Wen Song Ruan, Si Yu Chen, Jia Xing Shen
Fig.2 The experimental scheme Fig.3 The control system frame
The chatter signal got from the sensor convert into the electronic signal and input it into the charge amplifier, then send signal through charge amplifier amplification into the multifunctional data acquisition system and conduct conversion of A/D, then the converted signal could input the computer.
Through the fuzzy control system we designed and use the data acquisition system to carry out D/A conversion. the converted analog signals by the power amplifier, the magnetic fluid-foam metal damper applied electric field, the damper can provide corresponding controllable damping force control of machine tool chatter, thus suppressing the purpose of cutting chatter.
Subsystem block is the encapsulation figure of steerable damping force .The relationship between its amplitude and the electric current is as the formula(2).Subsystem 1 is the encapsulation figure of chatter reduction of figure 7.
Through the fuzzy control system we designed and use the data acquisition system to carry out D/A conversion. the converted analog signals by the power amplifier, the magnetic fluid-foam metal damper applied electric field, the damper can provide corresponding controllable damping force control of machine tool chatter, thus suppressing the purpose of cutting chatter.
Subsystem block is the encapsulation figure of steerable damping force .The relationship between its amplitude and the electric current is as the formula(2).Subsystem 1 is the encapsulation figure of chatter reduction of figure 7.
Online since: December 2012
Authors: Xian Zhang Feng, Li Ping Wang, Li Hong Yu, Zhi Qiang Jiang, Liang Ji Chen, Jing Li, Yan Mei Cui
The NC technology depend on the data carrier and data operations of the binary forms.[1-6]
Parsons Company first proposed the idea to control the machine by the digital pulse in the U.S, in 1948.There is the first 3 coordinate CN milling machines in 1952.
Heavy width reduction rolling technology of hot slabs.
Heavy width reduction rolling technology of hot slabs.
Online since: January 2015
Authors: Xin Zhang, Xiao Shuai Zhang, Hong Wei Chen
Table 1 Variable Symbols and its Physics Meaning
symbol
Physical meaning
symbol
Physical meaning
m
Vehicle mass[kg]
i0 /η0
Main reduction ratio/efficiency
f
Rolling resistance coefficient
ig/ηg
Gearbox ratio / efficiency
i
Road slope
Ie / IMG1 / IMG2
Moments of inertia for engine/motor1/motor2
Cd
Air resistance coefficient
Te / TMG1 / TMG2
Torque of engine/ motor 1/motor 2
A
Windward area[ m2]
If
Equivalent moment of inertia
r
Tire rolling radius [ m]
Td
Integrated drive torque
αmax
Grade Ability
Computational formulas of drive torque and moment of inertia at different driving mode are summarized in Table 2.
Based on the data of engine and motor, external characteristic curves at different drive modes are drawn in fig. 2. 1.
Speed (km/h) Max.Gradeability (%) Acceleration Time 0~20km/h (s) Acceleration Time 0~50km/h (s) EV1 79.3119 12.1966 5.9116 34.5494 EV2 116.8865 26.6085 2.9437 14.0262 Engine 86.0573 19.2535 4.3579 29.783 Hybird 99.6788 34.3812 3.8163 15.7022 Full Driving 99.6788 51.9783 2.3136 10.0845 The data in Table 3 indicate that, maximum speed of vehicle lies in EV mode 2, because the maximum speed of motor is greater than the maximum speed of engine.
Based on the data of engine and motor, external characteristic curves at different drive modes are drawn in fig. 2. 1.
Speed (km/h) Max.Gradeability (%) Acceleration Time 0~20km/h (s) Acceleration Time 0~50km/h (s) EV1 79.3119 12.1966 5.9116 34.5494 EV2 116.8865 26.6085 2.9437 14.0262 Engine 86.0573 19.2535 4.3579 29.783 Hybird 99.6788 34.3812 3.8163 15.7022 Full Driving 99.6788 51.9783 2.3136 10.0845 The data in Table 3 indicate that, maximum speed of vehicle lies in EV mode 2, because the maximum speed of motor is greater than the maximum speed of engine.
Online since: October 2013
Authors: Sung Wook Won, Yeoung Sang Yun, In Seob Kwak, Jang Sik Shin
The experimental isotherm data were plotted using the Langmuir model, which is shown in Fig. 1(A).
The sorbed Ru ions can be recovered as a highly concentrated solution by elution (data not shown).
This process is possibly simple and cost-effective compared to the conventional hydrometallurgical process, which involves a multi step process such as leaching, extraction, reduction and precipitation.
The sorbed Ru ions can be recovered as a highly concentrated solution by elution (data not shown).
This process is possibly simple and cost-effective compared to the conventional hydrometallurgical process, which involves a multi step process such as leaching, extraction, reduction and precipitation.
Online since: July 2022
Authors: Lenka Klakurková, Martin Juliš, Pavel Gejdoš, Martin Dyčka
. %)
Analysis
Figure
Mg
Al
Zn
O
Si
1
6a
59.0
22.0
3.8
12.1
3.1
2
6a
57.6
21.6
2.8
11.8
6.1
3
6a
51.5
19.4
2.6
24.8
1.6
1
6b
56.6
30.3
2.8
10.3
-
2
6b
56.4
33.0
3.2
6.1
1.3
3
6b
58.2
34.0
2.1
5.7
-
4
6b
56.7
33.0
2.2
7.6
0.5
1
6c
45.5
12.6
1.2
39.4
1.2
1
6d
55.8
-
-
7.0
37.2
2
6d
54.0
3.8
0.4
8.4
33.3
3
6d
63.4
29.8
3.5
1.9
1.4
4
6d
59.6
33.0
3.6
3.0
0.8
The obtained data and measurement results confirm the findings presented in [3].
The data presented in this paper extend the previously acquired knowledge.
· The reduction of chemical reactions between molten metal and shell during casting will be possible by a combination of methods reported in the literature.
The data presented in this paper extend the previously acquired knowledge.
· The reduction of chemical reactions between molten metal and shell during casting will be possible by a combination of methods reported in the literature.
Online since: October 2008
Authors: Marivalda Pereira, Viviane Gomide, Natália Ocarino, Rogéria Serakides, Maria de Fatima Leite
After 72 hours of incubation the viability of the osteoblasts was evaluated through the MTT
assay, based on the reduction of tetrazolium salt to formazan crystals by dehydrogenase present in
living cells mitochondria.We left 200 µl of culture medium in each well and added 60 µl of stock
solution of MTT (5 mg/ml).
Data was analyzed Graph Pad Prism signed rank test.The results expressed as means ± SD of triplicate wells was repeated three times.Total 9 wells were assayed in each experimental group.
Data was analysed GraphPad Prism signed rank test.
Data was analyzed Graph Pad Prism signed rank test.The results expressed as means ± SD of triplicate wells was repeated three times.Total 9 wells were assayed in each experimental group.
Data was analysed GraphPad Prism signed rank test.
Online since: May 2004
Authors: Chan Mook Kim, Jun Suh Yu, J.Y. Kim, S.B. Yoon
Experimental
Colloidal gold particles were prepared via the citrate reduction method as described previously [15].
The corresponding pore size distribution data calculated from the adsorption branches of nitrogen isotherms by Barrett-Joyner-Halenda method showed narrow pore size distributions centered at 2.9 nm, 4.3 nm, and 2.6 nm, respectively.
particle size a Sample name core diameter [nm] Shell thickness [nm] BET surface Area [m2/g] total pore volume [ml/g] pore size b [nm] Au@SCMS silica 200 30 404 0.39 2.9 Au@carbon capsule 195 24 1166 1.47 4.3 Au@silica capsule 190 24 1134 1.07 2.6 aThe particle size was determined from the electron microscopy data.
The corresponding pore size distribution data calculated from the adsorption branches of nitrogen isotherms by Barrett-Joyner-Halenda method showed narrow pore size distributions centered at 2.9 nm, 4.3 nm, and 2.6 nm, respectively.
particle size a Sample name core diameter [nm] Shell thickness [nm] BET surface Area [m2/g] total pore volume [ml/g] pore size b [nm] Au@SCMS silica 200 30 404 0.39 2.9 Au@carbon capsule 195 24 1166 1.47 4.3 Au@silica capsule 190 24 1134 1.07 2.6 aThe particle size was determined from the electron microscopy data.