Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: August 2006
Authors: Hidehiro Yoshida, H. Ito, Yuichi Ikuhara, Takahisa Yamamoto, T. Sakuma
On the other hand, it was revealed that a
reduction of flow stress does not always give an increment of elongation in this system as predicted
previously [9].
In the figure, the data points at nominal strain of 0% represent for respective initial grain sizes.
In the figure, the data points at nominal strain of 0% represent for respective initial grain sizes.
Online since: July 2014
Authors: Bruna da Costa Andrade, Marcelo Andrade Macedo, José Cleverton da Conceição Passos
The XRD data were indexed by the hematite phase (ICSD88418).
As the ionic radius of Ca2+ is 0.99 Å, while the ionic radius of Fe2+ and Fe3+ are 0.76 and 0.64 Å, respectively, doping was expected to lead to increased cell volume and consequent reduction of the surface area, resulting in a shift of diffraction peaks toward higher angles.
As the ionic radius of Ca2+ is 0.99 Å, while the ionic radius of Fe2+ and Fe3+ are 0.76 and 0.64 Å, respectively, doping was expected to lead to increased cell volume and consequent reduction of the surface area, resulting in a shift of diffraction peaks toward higher angles.
Online since: January 2013
Authors: Dong Ruan, Yvonne Durandet, Martin Vcelka, Christopher C. Berndt
Introduction
Improvements in vehicle occupant safety, coupled with a reduction in vehicular mass, are ongoing pursuits of the automotive industry.
A diagram showing experimental setup: (a) Drop Tower and associated data acquisition equipment; (b) a composite sandwich beam made from carbon fibre face sheets and aluminium foam core with a nominal relative density of 10%.
A diagram showing experimental setup: (a) Drop Tower and associated data acquisition equipment; (b) a composite sandwich beam made from carbon fibre face sheets and aluminium foam core with a nominal relative density of 10%.
Online since: January 2013
Authors: Hong Bin Xiao, Chuan Sheng Chen
The process of liquefaction in sandy soils in which the rise of pore water pressure causes a drastic reduction of shear strength, is a well understood phenomenon, and a procedure for its evaluation has been developed.
Empirical techniques based on field performance data were subsequently developed and promoted.
Empirical techniques based on field performance data were subsequently developed and promoted.
Online since: February 2014
Authors: Hyun Do Yun, Mi Hwa Lee, Bae Su Khil, Young Seok Chae
The mixtures were the same as the three concrete mixtures that were used for the adiabatic temperature rise test for the heat characteristics data of the used materials and concrete required for the analysis of the hydration heat, compression strength was calculated through the previous material tests.
K: Thermal Analysis of the Heat of Hydration in Concrete with Considering Heat Reduction Techniques, Journal of Korea Concrete Institute, Vol.7 (1995), p.176 [5] Korean Concrete Institute (KCI), “Design code for structural concrete”, 2012 [6] Americal Convrete Instute (KCI), “Building Code Requirement for Structure Concrete”, 2011
K: Thermal Analysis of the Heat of Hydration in Concrete with Considering Heat Reduction Techniques, Journal of Korea Concrete Institute, Vol.7 (1995), p.176 [5] Korean Concrete Institute (KCI), “Design code for structural concrete”, 2012 [6] Americal Convrete Instute (KCI), “Building Code Requirement for Structure Concrete”, 2011
Online since: December 2012
Authors: Milthon S. Silva, André P. Nóbrega, José R.T. Júnior
Right below, we have a comparative table for the carbon footprints of different energy sources, some values are presented as an interval, because of the different kinds of implementation for a same source:
Table 1 - Carbon Footprint of different energy sources [1,2,4]
Source
Emissions[Kg.C/MWh]
Wind Power(Onshore)
4.64
Nuclear
5
Wind Power(Offshore)
5.25
Hydro
5-30
Biomass
25-93
Photovoltaic
58
Gas(Combined Cycle Gas Turbine)
577
Gas(Open Cycle Gas Turbine)
751
Coal
1000
And after, we have a carbon footprint comparative chart with data of real - low carbon - plant installed in UK:
Fig. 2 - Clean sources Comparative[2]
Even in a low carbon plant comparative, wind power generation shows the lowest emission rates.
An example of that is the power reduction just by venting steam.
An example of that is the power reduction just by venting steam.
Online since: October 2013
Authors: Yuan Qing Wang, Peng Tian, Xu Dong Shi, Yan Nian Zhang
The ABAQUS simulation specific data are that expansion angle is taken as 30o, eccentricity taken as 0.1, twin screw ultimate compressive strength/single shaft ultimate compressive strength is taken as 1.16, constant stress ratio is taken as 0.6667, and viscosity coefficient is taken as 0.0005.
Choose 8-nodes linear reduction integral unit (C3D8R an eight-node linear brick, reduced integration) for concrete, two nodes linear truss element (T3D2: A2 - node linear 3-d truss) for steel bar.
Choose 8-nodes linear reduction integral unit (C3D8R an eight-node linear brick, reduced integration) for concrete, two nodes linear truss element (T3D2: A2 - node linear 3-d truss) for steel bar.
Online since: March 2014
Authors: Chen Li, Cui Ping Liu, Zhe Wang
Although the corresponding low-order model can be gotten by the model reduction method, the accuracy would be reduced accordingly, and finally it will lead to a great difference between the results of the analysis and the actual conditions, keeping the accuracy requirements hard to be achieved[4, 5].
With feedback data of grating ruler as output system, combined ball screw feed system characteristics and control requirements, choosing good quality second-order dynamic model as a reference model ,using Narendra program MRAS is built by testing the system until the adjustable reference model achieves matching with reference model, finally deduce the second-order model of ball screw feed system.
With feedback data of grating ruler as output system, combined ball screw feed system characteristics and control requirements, choosing good quality second-order dynamic model as a reference model ,using Narendra program MRAS is built by testing the system until the adjustable reference model achieves matching with reference model, finally deduce the second-order model of ball screw feed system.
Online since: January 2015
Authors: Di Li, Song Bao Luo, Jian Ming Zhang, Chang Yu Xu, Chang Tao Pang
Fig. 2(b) shows, the surface roughness would improve with the reduction of the cutting depth; but when the cutting depth is less than a certain value, the surface roughness would increase rapidly.
Upon completion of the full aperture reflector calibrating, fitted mirror shape could be gained by using specialized coordinate measurement and evaluation software — RationalDMIS to process the coordinate data.
Upon completion of the full aperture reflector calibrating, fitted mirror shape could be gained by using specialized coordinate measurement and evaluation software — RationalDMIS to process the coordinate data.