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Online since: October 2014
Authors: Salam J. Bash Al-Maliky
This in turn leads to a reduction in the friction losses.
This is due to the reduction in pumping head from one side and the increase in the submerged length from the other side.
Fig. 2 Effect of suction pipe diameter on the pumping rate at submergence ratio (0.2) Fig. 3 Effect of suction pipe diameter on the pumping rate at submergence ratio (0.3) Fig. 4 Effect of suction pipe diameter on the pumping rate at submergence ratio (0.4) Fig. 5 Effect of suction pipe diameter on the pumping rate at submergence ratio (0.5) Pumping rate (Kg/s) Ds= 0.063m Ds= 0.048m Ds= 0.033m Ds= 0.027m Ds= 0.021m Fig.6 The relation between pumping rate and submergence ratio for the different suction pipe diameters ----- Experimental data ___ Stenning & Martin model Fig.7 A comparison between the experimental data and Stenning & Martin model References [1] Awari G.
Online since: October 2013
Authors: Wei Jie Wu, Guo Jie Ye
(3) Seen from the operator moving data got with Spaghetti Diagram, there is much unnecessary movement of operations staff in the production process, resulting in waste, as shown in Fig.3.
Fig.5 Spaghetti diagram of optimized elevator controller assembly line The reduction of process time.
Table 1 Compare of elevator controller assembly before and after improvement subject Optimized status Optimized status Reduced ratio Cycle time(day) 6.95 6.09 12.40% Manufacturing time(Min) 121.97 102.33 16.10% Operator number (person) 5 4 20.00% Work time per month(hour) 2405 1953 18.79% Over time per month(hour) 557 105 81.15% Summary By introducing the flexible improvement of elevator controller assembly line, the specific sequence of operations, precautions, methods for analytical tools, methods for data collection and analysis, experience of using analytical tool are described to improve traditional production line with Value Stream Mapping.
Zammori: Application of value stream mapping for lean operations and cycle time reduction: an Indian case study [J].
Online since: January 2018
Authors: Surasak Suranuntchai, Aekkapon Sunanta
Material properties data that needed to input into FE program could be represented in Fig. 3.
When adjusting DBRF of drawbead no. 1 and no. 3, the simulation results showed the reduction of cracks area on the part with reducing DBRF as seen in Figs. 9-10.
From the results studied, the suitable process conditions needed to be improved were the new drawbead design, which adjusted two drawbead geometry follow DBRF on die face, had shown the reduction of the cracks zone on the part, when comparing with the original design.
In addition, sincere thanks must be given to Thai Summit Automotive Co., Ltd for useful advice and providing the importance data about the parts.
Online since: June 2010
Authors: Chang Hou Lu, Wen Tao Sui
Techniques which enhance the signal in these situations are therefore highly desirable for early fault detection. [1] In vibration analysis for mechanical fault detection, noise reduction has been mostly done using filters.
The noise reduction methods based on filters can not effectively remove the noise which contains components in all frequency ranges.
The vibration acceleration data of bearings are obtained from the Case Western Reserve University [8].
[8] CWRU, Bearing Data Center, http://www.eecs.case.edu/
Online since: January 2013
Authors: Xiao Ping Jin, En Rong Mao, Xue Liang Wang, Zheng He Song
Increasing competition has forced manufactures to make considerable reductions in machine design and building cycles.
For the steering system, the secondary reduction gear and Ackerman steering system are worked out just after the input of initial design parameters.
When a new model is required, the stored historical data, similarity algorithms and interference engine help the designers to calculate the degree of similarity of the machine being designed to the one already built, give early suggestion of the trend and work out final results.
Thus in the future work, collecting more empirical knowledge from the experts and learning more rules from the historical data are going to be done.
Online since: November 2007
Authors: Tetsuya Kameyama, Hikoshiro Hayashi, Takao Saito, Katsuya Kato
So far, we have demonstrated that MC3T3-E1 cells cultured at low cell density on sand-blasted substrates showed significant reduction of cell proliferation, subsequent poor differentiation and mineralization with increase of surface roughness [1].
This suppressed proliferation caused significant reduction of differentiation and mineralization, which might be resulted from lack of gap-junction communication required for maturation of osteoblast-like cells.
The cells on culture-day 1 showed little BrdU incorporation (data not shown), suggesting DNA synthesis was almost inhibited under this condition.
Western blotting analysis showed there were also no obvious differences in cell-to-substrate attachment (integrin α5β1) and cell-to-cell communication (Cx43) among the substrates on culture-days 7 (data not shown).
Online since: February 2011
Authors: Hong Sun
Therefore, only the current data from strips 2 to 22 are used in the following presentations.
Even though the current data from numbers 1 and 23 are not used in the final result analysis, these two strips must be put in place and connected to the same potentiostat to ensure the validity of the symmetry assumption for the two adjacent measuring strips.
Firstly, the oxidation of hydrogen in the anode is faster 105 times than the reduction of oxygen in the cathode.
At the downstream, the membrane absorbs water produced by the reduction of oxygen, leading to the decrease of the resistance and the increase of the current density.
Online since: June 2015
Authors: Hidekazu Tsuchida, Naohiro Sugiyama, Jun Kojima, Emi Makino, Norihiro Hoshino, Yuichiro Tokuda
Therefore, to spread the use of SiC devices, mass-production technologies and cost reduction of SiC wafers are necessary.
This enables long-term growth, which contributes to a reduction of production costs.
On the other hand, in the model with clustering, the growth rates of the experimental data correspond to clustering model data in the whole temperature range.
Online since: December 2010
Authors: Zhen Long Wang, Yu Kui Wang, Jian Li, Cheng Guo
The strain of the center of reduction actuator B and C after simplification is .
The equation of momental equilibrium of the arm unit can be got: (5) The elasticity produced by the left silicone body of the neutral layer is F1 (N);The resultant force produced by actuator B and C at the center of reduction is F2 (N);The elasticity produced by the right left silicone body of the neutral layer is F3 (N) the force equation of the arm unit can be got: F1=F+F2+F3 (6) Some conclusions can be got by calculating the mechanical model.
Through the experiment, experimental data at different voltages and different time has been got, as table 1 shows.
Before the experiment, a maximum bending angle (132.39°) has been calculated from the mechanical model, which is approximately equal to the experimental data (132.48°) (figure6-b).
Online since: February 2013
Authors: Wen Rong Liu, Qian Qian Chai, Wei Yao, Chun Xiang Geng
Introduction A lot of research demonstrated selective catalytic reduction can effectively remove nitrogen oxide in flue gas, which is currently being developed as a new flue gas treatment technique.
The data were collectedin range 2θ=5~75゚, scan speed was 10゚/min.
Data [5] showed that the phosphoric acid as a good adhesive could improve the adhesiveness between TiO2 particles, and increase the compressive strength of them.
[5] Bin Wu: Study of Novel Mn-based Catalyst for Selective Catalytic Reduction of NOx at Low-temperature.
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