Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: May 2014
Authors: Toshiyuki Hashida, Kazuhisa Sato
This experimental study has produced a systematic data set of the elastic modulus and fracture stress which contribute to the implementation of stress and strain analyses of SOFCs.
The experimental results demonstrated that there was a characteristic value of initial porosity above which the mechanical properties could be maintained during a reduction- re-oxidation cycle.
Deformation and Mechanical damage The data acquisition system employed in this study is described in our previous report [3].
Analysis and imaging of the obtained data were done by improving information technique, which are one of the techniques for wavelet analysis and location analysis.
Future efforts will focus on development of techniques for efficiently processing the huge volume of data, and investigating methods for automatic extraction of the period and features of valid signals, without setting threshold values beforehand.
Online since: April 2008
Authors: Bo Jonson, Björn Zethræus, Ruud Beerkens, Adriaan Lankhorst
- a study of the possibilities Bo Jonson 1, a, Björn Zethræus1, b, Ruud Beerkens2,c and Adriaan Lankhorst2,d 1 School of Technology and Design, Växjö University, SE 351 95 Växjö, Sweden 2 TNO Glass Group, De Rondom 1, Eindhoven, The Netherlands a bo.jonson@vxu.se, b bjorn.zethraeus@vxu.se, cruud.beerkens@tno.nl, dadriaan.lankhorst@tno.nl Keywords: CO2 reduction, glass furnace, woody bio fuel, energy balance calculations, non carbonate batch compounds Abstract.
Tables 1 and 2 summarizes the calculated data for glass furnace wood combustion in comparison with natural gas combustion.
Combustion and furnace data, 50 t p d furnace, wood and natural gas combustion Wood Wood Wood Gas % cullet; mass % 50 50 80 50 Surface area melter; m2 28,1 28,1 28,1 28,1 T melt in throat; o C 1340 1340 1340 1340 Air excess; vol. % 12 20 12 8 Batch humidity; mass % 3 3 3 3 Net calorific value gas; MJ/Nm3 31,65 Combustion value, wood ; MJ/kg 17 17 17 - Cold air leaking in; Nm3/hr 400 400 400 400 Emmissivity flame part; [-] 0,4 0,4 0,4 0,25 Air preheat; o C 1195 1195 1167 1197 Regenerator efficiency 48,9 49,7 49,1 53,8 Energy consumption ; MJ/kg glass 7,48 7,64 7,09 8,05 Wood/ gas consumption; Kg/Nm3.
Silicate compounds are thus the only ones left for consideration and studies in this work, although some more data on hydroxides on to be collected in order to achieve a more complete picture.
Introducing silicates will of course imply a reduction of the sand content of the batch, as one of the factors explaining the enhanced reactivity.
Online since: October 2010
Authors: Min Quan Kuang, Shan Xiang Zhang, Pei Xu
Substituting the above values into Eq. (1) and fitting the calculated results to the experimental data, we have ρ » 4 %
For comparisons, the observed EPR data for the similar tetragonal Cu2+ centers on the original trigonally distorted octahedral Cd2+ site [7] in CsCdCl3 and the octahedral interstitial site in the CdSe nanocrystals [18] are supplied in Table 1.
b The experimental data for the Cu2+ center on the Cd2+ site in CsCdCl3 [7].
c The experimental data for the Cu2+ center on the octahedral interstitial site in the CdSe nanocrystals [18].
Discussion One can find from Table 1 that the theoretical EPR parameters based on the relative elongation ratio ρ in Eq. (4) are in good agreement with the experimental data.
Online since: October 2014
Authors: Septimiu Albetel, Vlad Martian, Mihai Nagi
Data reduction.
Data obtained from the test was reduced using the technique described by Wang et. al. in [11] with the help of the ϵ-NTU method.
Chi, Heat transfer and friction characteristics of plain fin-and-tube heat exchangers part I: new experimental data, Int.
[10] ASHARE Guideline 2, Engineering Analysis of Experimental Data, Atlanta, ASHARE (1986) [11] C.
Chi, Data reduction for air-side performance of fin-and-tube heat exchangers, Exp.
Online since: March 2014
Authors: Guo Jian Cheng, Ya Juan Tian, Ye Liu, Zhe Wang
PCA is used to reduce the dimension of original data, while FNN is applied to train and test the new data.
PCA PCA, Principal Component Analysis, is a linear input dimension reduction technique.
Experimental results This experiment used PCA to reduce the dimension of characteristic parameters of statistical data on water injection, and then FNN was applied to train and predict the data for further research.
The experimental processes are shown in figure 2: Fig. 2 Experimental process Data preparation.
The fuzzy membership function center C and width B obtained randomly. 116 groups of data samples were randomly divided into two parts of the training set and test set, the training set for 100 groups of data samples, the test sets for the rest of the 16 groups of data samples.
Online since: October 2013
Authors: Jie Dai, Jian Min Xiong, Jin Zhi Zhou
The paper specially focuses on how to fulfill the requirements of engineering projects by properly replacing fine aggregates with crumb rubber concrete based on the experimental results and their potential application, and accumulating experiment data for future design of rubberized concrete according to specific engineering requirements.
The density reduction mainly contributed to the lower specific gravity of crumb rubber (1120kg/m3) compared to that of river sand (2610 kg/m3).
The density reduction feature could be reasonably used in a number of engineering projects, such as false facades, and interior construction [10].
It is clear that the higher the rubber content in the concrete mix, the more the compressive and flexural strength reduction.
The strength reduction could be attributed to the lower strength of rubber aggregate than surrounding cement, microcracks initiated around rubber particles upon loading because of elastic mismatch.
Online since: February 2013
Authors: Rong Wang, Ai Ping Tang
Therefore, reduction of excess sludge is one of the biggest challenges in biological wastewater treatment.
All the fate of the nitrogen were showed in the Fig.2, the data showed that most of the nitrogen released from the ozonated sludge were escaped from the supernate in the form of nitrogen and ammonia. 10.31 1.02 109.83 121.04 Solid nitrogen Organic nitrogen Ammonia Nitrate nitrogen Other gas forms (ammonia or nitrogen) Nitrite nitrogen 3.23 Fig.2 Nitrogen balance after ozonation (Units: mg/L) Ozone oxidation enables the destruction of microorganism cells and the elution of cytoplasm compounds into the bulk solution [7].
Choi: Ozonation of wastewater sludge for reduction and recycling.
Hwang: Reduction of sludge by ozone treatment and production of carbon source for denitrification.
Weerapakkaroon: Advanced sewage treatment process with excess sludge reduction and phosphorus recovery.
Online since: July 2011
Authors: Terry Bennett, Andrew Tyas, James A. Warren, Stephen D. Fay, Sam E. Rigby
Historically, four methods have been employed to produce these propagation and loading data. 1) Closed form mathematical analysis of shock wave propagation/interaction. 2) Experimental test data. 3) Numerical analysis of the relevant differential equations governing shock propagation and target interaction. 4) Empirical or quasi-empirical prediction methods.
Thus, data from a large number of disparate experimental trials can be combined into simple load prediction relations.
Figure 6 shows an example of the very good correlation between the cleared pressure prediction derived this way and the experimental data from Figure 4.
Data from Figure 4 with Hudson clearing prediction added Figure 7.
Cumulative specific impulse vs time data from Figure 6 Figure 8.
Online since: March 2010
Authors: Wen Wu He, Shu Li Sun, Min Gang Zhang
The total elongation and reduction in area were calculated by the hot tension.
So activation energy of P92 steel in the austenite range is calculated with the datum of 1000-1250℃.
The reduction in area is also gradually ascending.
In Fig. 5(b), the reduction in area has an inflexion point at 1150℃.
It can be observed that the reduction has little influence on the volume fraction of dynamic recrystallization.
Online since: June 2015
Authors: M. Nor M. Yusuf, N. Atiqah Jailani, Mukarramah M. Kamal, S. Sholehah Hussein, R. Hussin, Karim Deraman, W. Nurulhuda W. Shamsuri, Zuhairi Ibrahim
The data were scanned from 15º - 60º of 2θ at room temperature.
The XRD data of samples was found to be in good agreement with the reported XRD pattern of BaBPO5 (PDF 01-089-4624).
The data also show similarities to the pattern assigned previous study of BaBPO5: Ce and BaBPO5: Sm phases [2, 16].
The data show no peaks originating from the dopant.
Data XRD shows the BaBPO5 phosphors were evaluated to have hexagonal structure.
Showing 8011 to 8020 of 40694 items