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Online since: August 2008
Authors: Gobwute Rujijanagul, C. Puchmark
Although, variation in the data was found, the trend can be well fitted by the phenomenological kinetic grain growth equation [10] expressed as (3) where G defines as the average grain size at the time t, k' the constant, m the kinetic grain growth exponent, E the apparent activation energy, R the gas constant, and T is the temperature in Kevin.
There was an increase in maximum dielectric constant from 14890 for the 1100 o C sintered sample to 21150 for the 1200 o C sintered sample, followed by reductions for further sintering temperatures.
Joint Committee on Powder Diffraction Standards (JCPDS) PDF-4, Internation Centre for Diffraction Data (ICDD), 2000
Online since: October 2006
Authors: Kee Suk Nahm, Eun Kyung Suh, Sang Kwon Lee, Nam Kyu Cho, Han Kyu Seong, Heon Jin Choi, Ki Chul Choi
Introduction One dimension semiconductor nanowires provide a good system to investigate the dependence of electrical and thermal transport or mechanical properties on dimensionality and size reduction or quantum confinement effects [1, 2].
(a) SEM image of single GaN nanowire, (b) Gate voltage dependent ID-VSD data recorded on single GaN nanowire (80 nm radius, 3.1 μm length) shown in Fig. 3(a).
-3 -2 -1 0 1 2 3 -10 -5 0 5 10 ID Drain current (μA) VSD Source-drain voltage (V) Gate voltage (VG) +30V +20V +10V 0V -10V -20-100 102030 8.0 8.2 8.4 8.6 8.8 9.0 9.2 2.94 2.96 2.98 3.00 VSD ID Drain current (μA) VG Gate voltage (V) -4 -3 -2 -1 0 1 2 3 4 -6 -4 -2 0 2 4 6 1.45x10-8 A/V dID/dVG Fitting data Slope μ(c/L2) dID/dVG (x 10 -8 A/V) VSD Source-drain voltage (V) (b) (a) (c) (d) 1 μm
Online since: November 2005
Authors: Wisessint Attaporn, Kazuto Nishida, Hideo Koguchi
During this process, heat or mechanical loading applied to the bonding part of COG may cause a large stress, strain and deflection, which are key factors causing a reduction in the reliability of electric devices.
Firstly, Young's modulus and yield strength for the nickel were determined in the same manner as the experimental data and are shown in Table 1.
The results of the FEM for contact force, shape of ACF interconnection and elastic recovery agreed well with the experimental data.
Online since: July 2014
Authors: Wei Ma
During construction of large-scale construction project, the technical risk assessment is often lack of necessary historical data and faces the problem of “inadequate and deficient information”: technology is neither clear nor certain in itself, it has a portion of known information and a portion of unknown information; the solution of technical risk assessment is featured by differentiation and non-uniqueness and the experience, identification ability and cognitive level of human being are also limited.
Seen from the data in Table 4, the maintainability, technical compatibility and intellectual property right protection of technical risk of this large-scale construction project are in or on the verge of the “high risk” grey cluster, so these aspects still need close follow-up and it is necessary to pay close attention to them during construction for further reduction of technical risk.
Online since: July 2012
Authors: Zhi Gang Wei, Guang Hui Hu, Xin Long Tian, Chu Min Xiao, Zhan Chang Pan, Shou Kun Wu, Zhu Liang Li, Jian Feng Deng
The positions and relative intensities of the diffraction peaks were in good agreement with the Powder Diffraction Standards data (JCPDS data card36–1451).
Firstly, larger crystallite size resulted in decrease of grain boundary, which led to higher conductivity. the rod-like structure at 500˚C represented a very close contact which may also had positive effect on the reduction of the resistivity.
Online since: June 2014
Authors: Ming Yung Wang, Hsiao Kang Ma
Fig. 5 shows the fuel gas in successive reduction; from the above results and Fig. 6 shows there is slight change in 5% case compare with airtight condition that is until 240 seconds fuel gas up to a steady supply.
Obviously rice husk has largest gap with experiment data, others are almost identical to the experiment data, error in the 7%.
Online since: November 2012
Authors: Chun Mei Wang, Ye Jian Qian, Zhi Fang Chen
In Fig. 1(d), the calculated data show the characteristic bell-shaped NOX curves versus fuel/air equivalence ratio.
Fig. 2 shows the calculated data for engine performance as a function of inlet air temperature.
However, when the inlet air temperature is more than 320 K, there is a reduction in the incylinder pressure.
Online since: June 2014
Authors: Jie Sun
Damage identification based on the flexibility curvature The relation between flexibility matrix and modal data is : (3) Where: --modal order, --mode matrix, modal matrix can be obtained by mass matrix , that is , ,---natural frequency matrix.
Figure1 Discrete model drawing of the continuous beam Model analysis Damage is simulated by the reduction of the elastic modulus.
Damage index are made and then are input into the BP neural network (due to limitation these data are not listed).
Online since: October 2021
Authors: Xiao Zhou Li, Mao Xun Wang, Bin Dai, Shen Wang, Le Tong, Jin Kai Xu
The cutting force data is processed by DynoWare software.
Due to the characteristics of fiber anisotropy, when surface grinding ceramic matrix composites, there are two fiber directions of 0o and 90o on the grinding surface, and the surface roughness Sa of the two fiber angle directions should be measured as experimental data.
The greater the vibration amplitude, the greater the reduction in surface roughness.
Online since: April 2013
Authors: P.S. Pa
An effective evaluation on the process both features and sets up the complete processing parameters data, which is expected to apply propagation as a super finishing following turning machining process in the future.
The amount of reduction in the workpiece's surface after electrochemical finishing is 20µm, which is designed in the process for the dimensional control of parts.
The measuring data is chosen from at least two different locations.
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