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Online since: July 2013
Authors: Hui Mei Zhang, Hai Bo Cao, Xiang Miao Xie
As can be seen from Figure 2 and Figure 3, the maximum compressive stress of tunnel surrounding rock appeared at the intersection of the invert and sidewalls, its value is 17.22MPa, and the maximum tensile stress appeared at invert, its value is 0.352 MPa.
2.2 The analysis of temperature field for surrounding rock
According to the geological data and meteorological data of Osaka mountain tunnel engineering, the temperature boundary conditions of the computational domain are set to: AB and CD sides are adiabatic boundary, BC side ventilates to the atmosphere, and the measured temperature varying curve is[3] .Where, tk units for hours.
Compared with the state the tunnel just repaired, the downward displacement of vault and the upward displacement of invert decreases, this is because of the reduction of strain energy due to the heat releasing of surrounding rocks and lining under the action of circulating temperature.
Compared with the state the tunnel just repaired, the downward displacement of vault and the upward displacement of invert decreases, this is because of the reduction of strain energy due to the heat releasing of surrounding rocks and lining under the action of circulating temperature.
Online since: October 2013
Authors: T. Vargas, Blanca Escobar, Daniela Bravo, Indira Jaque, Aldo Collari
Both microorganisms showed a high oxidative activity on the ferrous iron initially added to the experiments of chalcopyrite bioleaching, presenting after 12 hours from the beginning, 550 mv for At. ferrooxidans at 300C and over 600 mv for bioleaching with S. acidophilus at 450C (data not shown).
Here, also the results can be explained for the precipitation of jarosite, 600 ppm of total ferrous precipitated (data not shown) on the surface of pyrite in the bioleaching at 45ºC which prevented, on one hand, the active participation of bacteria and, on the other hand, the diffusion of reactive and products on the surface of sulfide.
Jonhson, Reduction of soluble iron and reductive dissolution of ferric iron-containing minerals by moderately thermophilic iron-oxidizing bacteria, App.
Here, also the results can be explained for the precipitation of jarosite, 600 ppm of total ferrous precipitated (data not shown) on the surface of pyrite in the bioleaching at 45ºC which prevented, on one hand, the active participation of bacteria and, on the other hand, the diffusion of reactive and products on the surface of sulfide.
Jonhson, Reduction of soluble iron and reductive dissolution of ferric iron-containing minerals by moderately thermophilic iron-oxidizing bacteria, App.
Online since: February 2014
Authors: Byung Seung Kong, Won Suk Jang, Joon Soo Kim, Duck Chan Lee, Byung Soo Kim
The real-time velocity data was stored in the labtop through a RS232 serial connector and programmed software runs to obtain the real-time CO2 emission by calculating the CO2 concentration coupled with rpm and gas volume.
In order to compare the relationship among gas velocity, rpm, and CO2 emission, time-series data was plotted for 75 minutes shown in the Figure 2.
Kim, , Estimation of Emissions of Carbon Dioxide(CO2) in the Metropolitan Area and the Necessity of Developing the Learning Materials for its Reduction, Master’s Degree dissertation, Korea National University of Education, Chung-Buk, Korea, p. 19 (2007)
In order to compare the relationship among gas velocity, rpm, and CO2 emission, time-series data was plotted for 75 minutes shown in the Figure 2.
Kim, , Estimation of Emissions of Carbon Dioxide(CO2) in the Metropolitan Area and the Necessity of Developing the Learning Materials for its Reduction, Master’s Degree dissertation, Korea National University of Education, Chung-Buk, Korea, p. 19 (2007)
Online since: August 2013
Authors: Ting Li, Tian Shuang Qiu, Hong Tang
Simulation Results and Discussions
The heart sound data are downloaded from Internet or collected in the authors’ lab.
All heart sound data are preprocessed as follows.
Noise and disturbance reduction for heart sounds in the cycle frequency domain based on non-linear time scaling.
All heart sound data are preprocessed as follows.
Noise and disturbance reduction for heart sounds in the cycle frequency domain based on non-linear time scaling.
Online since: January 2010
Authors: Roumen Kakanakov, M.V. Zamoryanskaya, T.P. Popova, M. Milanova, G. Koleva, P. Vitanov, V. Bakardjieva
Spectral response and electrical characteristics
of the TPV cells fabricated on the base of such double heterostructures are improved due
to reduction of GaInAsSb surface recombination velocity [3] and photon recycling effect.
XRD data showed that FWHM values were lower for the structures grown on GaSb surface treated only in HCL.
The XRD and TEM data on the grown epilayers are indicative of the excellent materials quality and flat interfaces.
XRD data showed that FWHM values were lower for the structures grown on GaSb surface treated only in HCL.
The XRD and TEM data on the grown epilayers are indicative of the excellent materials quality and flat interfaces.
Online since: November 2006
Authors: Fei Wang, Xue Zeng Zhao, Jia Ying Chen
The reduction results in
changes in the static and dynamic behavior of the structures.
The ease of experimentation and data processing of vibration based detection methods make them attractive from an engineering perspective.
For the prediction of crack details from these data, a program has been written in MATLAB based on the theory given earlier.
The ease of experimentation and data processing of vibration based detection methods make them attractive from an engineering perspective.
For the prediction of crack details from these data, a program has been written in MATLAB based on the theory given earlier.
Online since: February 2014
Authors: Wu Xu, Xiao Li Zhang, Chun Feng Lv
If a display function of voice prompt is needed, audio materials, floor information are saved in database system, in which information corresponding to user instructions can be displayed through data analysis[5].
Through the network realization and object data communication diagram.
The virtual product propagations bring out the reduction of operation costs and the increase of product benefits, and satisfy the customers of the requirements for systems with real-time, interaction and immersion behaviors, and it also can bring out practical applications.
Through the network realization and object data communication diagram.
The virtual product propagations bring out the reduction of operation costs and the increase of product benefits, and satisfy the customers of the requirements for systems with real-time, interaction and immersion behaviors, and it also can bring out practical applications.
Online since: September 2013
Authors: Radim Čajka, Kamil Burkovič, Vojtech Buchta, Roman Fojtík
The other factor is that there was only one tile tested and it is necessary to test more specimens for getting the needy statistical data [7], [11].
Improvement of the hydraulic equipment has been planed so that the data could be at disposal.
IABSE Conference New Delhi, India, (2005): Role of Structural Engineers towards Reduction of Poverty.
Improvement of the hydraulic equipment has been planed so that the data could be at disposal.
IABSE Conference New Delhi, India, (2005): Role of Structural Engineers towards Reduction of Poverty.
Online since: September 2015
Authors: Jagannath Nayak, M.G. Ananda Kumar, S. Seetharamu, P. Sampath Kumaran
The brittle and hollow nature of fly ash cenospheres in the matrix also contributed to the reduction in hardness and density of the samples as seen from Fig.3 and 4.
The development of finer microstructure in the microwave sintered samples lead to better erosion loss which is about 12 to 15 % over its counterpart. 3.3 Dry Sliding Wear: The slide wear data have been obtained for the microwave sintered samples (M1 to M4) and conventionally sintered (C1 to C4) samples for applied loads of 1, 2 and 3 kg, slide speed of 200 rpm, sliding distance of 6000 m over a hard alloy steel disc of 62 HRC with a surface finish of about 10 µm.
The SEM picture corroborates the slide wear data in terms of grain morphology.
The development of finer microstructure in the microwave sintered samples lead to better erosion loss which is about 12 to 15 % over its counterpart. 3.3 Dry Sliding Wear: The slide wear data have been obtained for the microwave sintered samples (M1 to M4) and conventionally sintered (C1 to C4) samples for applied loads of 1, 2 and 3 kg, slide speed of 200 rpm, sliding distance of 6000 m over a hard alloy steel disc of 62 HRC with a surface finish of about 10 µm.
The SEM picture corroborates the slide wear data in terms of grain morphology.
Online since: July 2013
Authors: Zhi Hua Sun, Zhong Chuan Shi, Xiao Rong Zhou, Phil Scott, Xiao Yun Zhang, George E. Thompson, Janette M. Harris
The reduction in thickness range is most likely due to additional bombardment of the inner layers due to the extended spray time.
A significant result from the data is that all spray pressures and the lowest two temperatures produced coatings with significant areas of exposed steel, Fig. 2a.
Scanning electron micrographs of (a) Al-50wt%Zn, and (b) Zn-20wt%Ni coatings; (c) EDX elemental mapping data indicating the initial and final coating compositions.
A significant result from the data is that all spray pressures and the lowest two temperatures produced coatings with significant areas of exposed steel, Fig. 2a.
Scanning electron micrographs of (a) Al-50wt%Zn, and (b) Zn-20wt%Ni coatings; (c) EDX elemental mapping data indicating the initial and final coating compositions.