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Online since: February 2018
Authors: Jing Wei Zhao, Zhen Shan Liu, Pi Zhi Zhao
The incubation time becomes shorter with the higher cold rolling reduction.
The calculated apparent activation energy for recrystallization decreases with the increasing cold rolling reduction, indicating that the recrystallization occurred much easier in AA5754 sheet with higher cold rolling reduction.
When the cold rolling reduction increases to 67%, the recrystallization becomes much faster.
The values of k and n were determined by fitting the experimental data (Fig. 7).
In contrast, the curves fitted according to the recrystallization time demonstrate a better agreement with experimental data.
The calculated apparent activation energy for recrystallization decreases with the increasing cold rolling reduction, indicating that the recrystallization occurred much easier in AA5754 sheet with higher cold rolling reduction.
When the cold rolling reduction increases to 67%, the recrystallization becomes much faster.
The values of k and n were determined by fitting the experimental data (Fig. 7).
In contrast, the curves fitted according to the recrystallization time demonstrate a better agreement with experimental data.
Online since: May 2012
Authors: Guang Ning Pu
The test data show that the beam-reduction and rib-addition strengthening method results in an obvious enhancement of the natural vibration frequency of simply supported hollow slab bridges, which proves that the strengthening method has remarkable improvement effect on the rigidity of bridges.
The study result is that the beam-reduction and rib-addition strengthening method can greatly enhance the structural behavior of hollow slab bridges.
Fig.1 Cross sections of the bridge before and after strengthening (Unit: cm) Test and data analysis Dynamic test.
This is totally identical with the result of the appearance inspection and the conclusion from the static test data.
Conclusions Based on the practical test data from a 30m-span prestressed hollow slab bridge, the natural vibration frequency and vibration mode of the bridge before and after strengthening are compared and analyzed in this article.
The study result is that the beam-reduction and rib-addition strengthening method can greatly enhance the structural behavior of hollow slab bridges.
Fig.1 Cross sections of the bridge before and after strengthening (Unit: cm) Test and data analysis Dynamic test.
This is totally identical with the result of the appearance inspection and the conclusion from the static test data.
Conclusions Based on the practical test data from a 30m-span prestressed hollow slab bridge, the natural vibration frequency and vibration mode of the bridge before and after strengthening are compared and analyzed in this article.
Construction of the Decision Method Based on Energy Saving and Reduction of Greenhouse Gas Emissions
Online since: June 2014
Authors: Hui Qin Dong, Chao Huang, Hong Lin, Ji Sun
According to the survey's raw data, this paper not only calculates the energy levels of conventional coal-fired power plant in North China and an integrated gasification gas-steam combined cycle (IGCC) power plant, but also computes their carbon dioxide emissions.
According to these two plants produce energy consumption data, using the above method for calculating the integrated energy, greenhouse gas emissions, carbon intensity and carbon productivity.
Calculations and comparisons of these two sets of data in accordance with the same capacity and the same tariff case have been done.
The data of each index show in Table3.
Parameters of the decision method are determined by the calculation method of energy saving, greenhouse gases emissions, carbon productivity, the carbon intensity and the weight of each index bases on quantitative data.
According to these two plants produce energy consumption data, using the above method for calculating the integrated energy, greenhouse gas emissions, carbon intensity and carbon productivity.
Calculations and comparisons of these two sets of data in accordance with the same capacity and the same tariff case have been done.
The data of each index show in Table3.
Parameters of the decision method are determined by the calculation method of energy saving, greenhouse gases emissions, carbon productivity, the carbon intensity and the weight of each index bases on quantitative data.
Online since: October 2025
Authors: Bambang Kun Cahyono, Achmad Ridwan Abdullah, Haryo Dwito Armono
The data used included tidal observations, bathymetry and topography surveys, wind and wave data, and hexareef formation data.
Study Location and Survey Area Data.
Bathymetry or Depth Data.
Depth Data to Computational Grid Results Wind and Wave.
Tidal Data Evaluation Results The RMSE value obtained from comparing observation data and tide calculations indicates adequate accuracy.
Study Location and Survey Area Data.
Bathymetry or Depth Data.
Depth Data to Computational Grid Results Wind and Wave.
Tidal Data Evaluation Results The RMSE value obtained from comparing observation data and tide calculations indicates adequate accuracy.
Online since: June 2015
Authors: Lan Fang Jiang, Jie Gang Mou, Yun Qing Gu, Shui Hua Zheng, Dong Shun Dai, Evan Wang, Zhuang Zhi Sun
Coating a layer of soft silicone material on the surface of a rotating disk and determinate the rotating resistance in the fluid, according to the presentation of data, it has drag reduction effect compared with rigid surface and this kind of method also can be used on the research of flexible surface drag reduction technique.
Drag reduction in a rectangular duct using riblets.
The measurement of dynamic properties of viscoelastic materials for turbulent drag reduction//European Drag Reduction Meeting, Emerging Techniques in Drag Reduction.
Turbulent drag reduction using compliant surfaces.
Active wall motions for skin-friction drag reduction.
Drag reduction in a rectangular duct using riblets.
The measurement of dynamic properties of viscoelastic materials for turbulent drag reduction//European Drag Reduction Meeting, Emerging Techniques in Drag Reduction.
Turbulent drag reduction using compliant surfaces.
Active wall motions for skin-friction drag reduction.
Online since: October 2014
Authors: Bin Zheng Fang, Hui Li, Chen Liang Zhou, Jian Wei Cao, Na Zhang, Jia Li Han, Xi Dong Wang
Catalyst characterizations
X-ray powder diffraction (XRD) data were taken Bruker D8 diffractometer equipped with CuKα(l=0.1541 nm) radiation operating at 40 kV and 40 mA for 2θ angles ranging from 1.25° to 80° with a step interval of 0.2°.
a: ML, b: OMS, c: Cu-ML, d:Cu-OMS The N2 isotherm adsorption-desorption data for ML, OMS, Cu-ML and Cu-OMS after calcined are displayed in Fig. 2.
However, commonly used method to obtain results of adsorption-desorption data and the downstream calculations may not very accurate about this type of pore structure.
The other reason is the bounded water in the interlayers, which maybe affect the desorption data, and lead to the adsorption-desorption isothermal cannot return.
So, the N2 isotherm adsorption-desorption data still meaningful at here.
a: ML, b: OMS, c: Cu-ML, d:Cu-OMS The N2 isotherm adsorption-desorption data for ML, OMS, Cu-ML and Cu-OMS after calcined are displayed in Fig. 2.
However, commonly used method to obtain results of adsorption-desorption data and the downstream calculations may not very accurate about this type of pore structure.
The other reason is the bounded water in the interlayers, which maybe affect the desorption data, and lead to the adsorption-desorption isothermal cannot return.
So, the N2 isotherm adsorption-desorption data still meaningful at here.
Online since: August 2013
Authors: Wen Yong Wang, Xiao Juan Ma
The result shows that the hourly concentration, daily mean concentration and annual mean concentration of NOX in air exceed the standard data, and the affected areas respectively account for 0.2%, 0.18% and 0.12% of the total area of the economic circle.
Whether the emission reduction of NOx of Chengdu Economic Circle can be successful is the key for finishing the task of emission reduction of NOx during “the Twelfth Five-Year Plan” in Sichuan Province.
The NOX emission of the domestic area source in the Chengdu Economic Circle (including all cities in the circle) can be calculated according to the population data of each city, energy data, per capita living energy consumption of standard coal for domestic use, liquefied petroleum gas, natural gas in each city, etc. in the statistical yearbook of Sichuan Province by using the emission factors [5] of NOX in the rural and urban household cooking range measured by Zhang J. etc in 2000 (showed as Table 4).
Therefore, the NOx concentration distribution of the whole economic circle can not be fully reflected only through monitoring data.
Therefore, the emission reduction of the NOx becomes the actual need for the protection of atmospheric environmental quality.
Whether the emission reduction of NOx of Chengdu Economic Circle can be successful is the key for finishing the task of emission reduction of NOx during “the Twelfth Five-Year Plan” in Sichuan Province.
The NOX emission of the domestic area source in the Chengdu Economic Circle (including all cities in the circle) can be calculated according to the population data of each city, energy data, per capita living energy consumption of standard coal for domestic use, liquefied petroleum gas, natural gas in each city, etc. in the statistical yearbook of Sichuan Province by using the emission factors [5] of NOX in the rural and urban household cooking range measured by Zhang J. etc in 2000 (showed as Table 4).
Therefore, the NOx concentration distribution of the whole economic circle can not be fully reflected only through monitoring data.
Therefore, the emission reduction of the NOx becomes the actual need for the protection of atmospheric environmental quality.
Online since: June 2014
Authors: Zhi Gang Zhang, Ying Ying Guo
Because of the increasing demand of the simulation experimental data, the weapons target-injuring efficiency has become a very important indicator so as to be included in the evaluation system.
The variance reduction techniques should be combined with Monte Carlo method.
Simulation of Missile’s Flight Process While the high-speed computer is developing fast, using Monte Carlo Method to estimate statistic data of weapons system has become an important branch of military simulation [2].
Variance reduction techniques The common techniques of variance reduction are: Antithetic Variables Method, Control Variants Method, Stratified Sampling Method, Importance Sampling, Conditioning Method, etc.
We use Matlab to calculate data; 1.
The variance reduction techniques should be combined with Monte Carlo method.
Simulation of Missile’s Flight Process While the high-speed computer is developing fast, using Monte Carlo Method to estimate statistic data of weapons system has become an important branch of military simulation [2].
Variance reduction techniques The common techniques of variance reduction are: Antithetic Variables Method, Control Variants Method, Stratified Sampling Method, Importance Sampling, Conditioning Method, etc.
We use Matlab to calculate data; 1.
Online since: May 2011
Authors: Jun Teng, Chun Kai He, Jian Hua Chen
Damage assessment of high-rise hybrid buildings structures based on monitoring data
Monitoring data is the basis of this method.
The monitoring data here refer to are the real-time monitoring data in the process of earthquake.
In this paper, there are two sources of real-time monitoring data: first, the real-time monitoring data that be got when the structure meet the real earthquake; second, the monitoring data that be got from shaking table test.
Utilize monitoring data to amend the result of finite element.
However, using the incremental loading method, a series of monitoring data will be got if the monitoring data is from shaking table test.
The monitoring data here refer to are the real-time monitoring data in the process of earthquake.
In this paper, there are two sources of real-time monitoring data: first, the real-time monitoring data that be got when the structure meet the real earthquake; second, the monitoring data that be got from shaking table test.
Utilize monitoring data to amend the result of finite element.
However, using the incremental loading method, a series of monitoring data will be got if the monitoring data is from shaking table test.
Online since: January 2014
Authors: Pei Yuan Lee, Chung Yi Huang, Yu Sheng Hu, Jiing Yih Lai
To achieve the goal, the proposed system must provide the following functions: 3D modeling, visualization, segmentation, bone reduction, fixation and data output.
Display of CT data.
The CT data is essentially a sequence of two-dimensional images, which can be represented as a set of volume data where a three-dimensional matrix recording the gray value of each pixel on the images is employed.
For example, the volume rendering technique can only show the surface data of the bony structure as well as its neighboring soft tissues from any section.
Accordingly, the display of 3D isosurfaces data and 2D images simultaneously enables one to catch more information from the CT data.
Display of CT data.
The CT data is essentially a sequence of two-dimensional images, which can be represented as a set of volume data where a three-dimensional matrix recording the gray value of each pixel on the images is employed.
For example, the volume rendering technique can only show the surface data of the bony structure as well as its neighboring soft tissues from any section.
Accordingly, the display of 3D isosurfaces data and 2D images simultaneously enables one to catch more information from the CT data.