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Online since: June 2012
Authors: Xian Min Li, Zhen Yu Song, Ya Qian Ma
What are prepared in the test are Cu and nickel particles, with particle size of being 10 ~ 100nm.Major preparation methods of Cu nano-particles are gas evaporation, mechanical and chemical, plasma, gamma-ray radiation, and liquid phase reduction methods, etc.
Condidering that the other preparation methods need more complicated equipments and processes, this test makes use of the liquid phase reduction method.
The liquid phase reduction method generates copper particles through the reaction of the reducing agent HCHO and the Cupric hydroxide solution.
After several tests, we obtain the data shown in Figure 6 and Figure 7: Figure 6.
Online since: August 2012
Authors: Xue Bin Yang, Kun Cai, Zheng Dong Chen, Yao Fen Zhang, Ming Xue Li
With a suitable scheme of neutral temperature and comfort air speed, reduction of energy consumption of the central chiller plant may surpass the additional energy requirement of the air side equipment, then both energy saving and thermal comfort can be achieved for the entire air-conditioning system.
The dataset consists of 30,000 buildings (10,000 office buildings for each of the three major climatic zones) with their detailed constructional and operational data and of their simulation outputs.
In Thailand office buildings, when the ambient temperature varied between 26.6 and 33.5 ºC whereas the set-point temperature varied between 22 and 28 ºC, Yamtraipat et al [12] reported that the mean energy consumption is about 6.14% reduction corresponding to a 1 ºC increase of the set-point.
(c) In the hot and humid climate, the 1 ºC increase of the set-point will lead to about 6% reduction of the mean energy consumption.
Online since: February 2012
Authors: Farzan Barati, Faramarz Fereshteh Saniee
In fact, CO2 emissions reduction constitutes a must in transportation industry and not only.
The specimens were compressed, up to a height reduction of 50%, in isothermal conditions in the temperature and strain rate ranges of 473K–513 K and 0.00025s-1 - 0.025s-1, respectively.
The measured data were then compared with the so-called calibration curves, as shown in Fig. 1, which were constructed from the finite element simulation results [10], and the values of friction factor m could be evaluated.
Sigmoid curves for AZ41 magnesium alloy Determination of the initial flow curve using the experimental results and the analytical sigmoid curves FE Simulations of the ring test with various friction factors Calculation of forming load and geometrical changes of the sample Determination of the numerical calibration curves Calculation of pa and for various reductions and frictional conditions Preparation of the plot of the numerical sigmoid curves Use the new flow curve Specifying new friction factor and flow curve No Are the differences between new values of friction factor and flow stresses and the corresponding previous ones small enough?
Online since: October 2011
Authors: Zhu Lu, Juan Du
Only a little part of the organics could be removed out of the polluted environment through physical and chemical methods, such as dilution, diffusion, volatilization, oxidization, reduction and neutralization.
The average data were shown in the following table 1.
The figures in Table 2 lead us to the conclusion that biostimulantⅠhad a better performance and stability than biostimulantⅡand blank, particularly in turbidity reduction.
Focus on single index, the removal rate of turbidity was the most, NH3-N and CODCr reduction were not obviously.
Online since: July 2011
Authors: Xue Fei Shen, Tao Chen, Ning Liu
Ridges at the edges can cause short-circuits in OLED devices or reduction in the working longevity and efficiency of the devices.
The reduction ratio of objective lens is 10:1.
The chemical wet etching processing is favorable for the reduction of the recast ridge at the edges. keep the excimer laser fluences as 5.81 J/cm2 and the translational speed of working platform as 10 mm/min to fabricate two ITO electrode patterns on two ITO glass sheets.
Results and discussion The microstructure of ITO electrode patterns was viewed and measured with non-contact 3D surface profiler (Wyko NT1100,Veeco Instrument Inc., USA), and the data were analyzed and simulated using WYKO Vision32 software(WYKO Corporation, USA).
Online since: August 2013
Authors: Le Ma, Yi Chai, Zheng Lu, Ying Ying Zhang
Recycling and re-manufacturing activities are done by the manufacturer, due to the manufacturer's salable product inventory part from remanufacturing, a direct result of the reduction in the number of suppliers, resulting in a reduction in the interests of suppliers.
Demand forecast For manufacturers, whether the production plans or parts procurement plans are based the forecast on the basis of good market demand, taking into account the characteristics of the system data exists volatility, but no significant growth trend, using exponential smoothing method to predict demand, exponential smoothing formula is as follows: (1) Do z-transform, (2) 3.1.2.
The supplier market demand will be reduced; it will also bring about a reduction in the amount of the production and procurement of suppliers. 50 weeks, reaching the product life cycle of the product is recycled for re-manufacturing activities, and assume that the process of recycling and re-manufacturing is no time delay, the manufacturers of new products production and purchase volume and instantly dropped, and maintain in a stable value.
Online since: September 2006
Authors: Laurent Barrallier, A. Kouadri
RESULTS Metallurgical results The laser procedure leads to a reduction in size of the grains in the weld zone and the presence of a high crystallographic texture only in the surface of the weld line, the main orientation of which is as follows: {101 1} 3 41 3 (58 % of the grains) [3].
It can be seen that the profile had a zigzag pattern and there is no clear tendency from the experimental data.
CONCLUSION This study shows that laser welding profoundly modifies at a local level the metallurgical (reduction of grain size, presence of a texture at the surface of the weld line) and mechanical state of moulded sheets of AZ91 alloy.
The complexity of the association of thermic, metallurgical and mechanical aspects has shown by observation a superficial layer where the presence of a strong texture is accompanied by a reduction in the intensity of the residual stresses which are maximal only in the sub layer.
Online since: October 2014
Authors: Chang Wu Xiong, Xiao Dong Zhou
Optimization Design of CDL The amount of vibration response reduction by a constrained damping layer is dependent upon the design parameters.
By attaching constrained damping layer patches on the base PCB panel, a reduction of 12 dB compare with the bare PCB is achieved in the vibration level of the second resonant peak.
Optimization of segmented constrained layer damping with mathematical programming using strain energy analysis and modal data[J].
Optimal Placement of a Constrained Damping Layer for Reduction of Interior Noise, 11th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference. 2006
Online since: December 2014
Authors: Stanisław Legutko, Grzegorz M. Krolczyk, Jolanta B. Krolczyk
., in the mechanism, its reduction improves several aspects of mechanical design as well [1].
A balanced mechanism has good dynamic performance due to the reduction of the actuator forces (torques), especially for the heavy machine or having large payload with slow speed [12].
The output data to asses slats deformations are the amplitude of the first harmonic resonance derived from the threshing drum unbalance.
A balanced mechanism has good dynamic performance since it leads to a considerable reduction of the actuator forces (torques).
Online since: September 2011
Authors: Yun Dong Sha, Feng Tong Zhao, Jia Han, Xian Zhi Cui
Compressor Transducer System Data Acquisition System Computer Fig. 2 Block diagram of measurement system In this test, several structure adjustments are realized by adjusting deflection angles of IGV and stator adjustable vanes.
Wisler: Loss Reduction in Axial Flow Compressors Through Lower-Speed Model Testing: Journal of Turbomachinery, Vo1. 107 (1995), p. 354-363
Neise: Experimental Study of Tip Clearance Losses and Noise in Axial Turbomachines and Their Reduction: Journal of Turbomachinery, Vol. 119 (1997), p. 460-471
Neise: Reduction of Tip Clearance Losses and Noise in Axial-Flow Machines: AGARD PEP 85th Meeting on Loss Mechanisms and Unsteady Flows in Turbomachines (Derby, UK, May, 1995), p. 8-12
Showing 14031 to 14040 of 40699 items