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Online since: December 2013
Authors: Oksana Melikhova, Jakub Čížek, Wolfgang Anwand, Martin Vlach, Gerhard Brauer, Stefan Wagner, Helmut Uchida, Ivan Procházka, Astrid Pundt, František Lukáč, Patrik Dobron, Ryota Gemma, Marián Vlček
Localization of a positron in an open-volume defect causes a reduction of positron annihilations with high momentum core electrons and leads to an increase of the S parameter.
The out-of-plane lattice constant for the first and the second generation grains determined from fitting of XRD data is plotted in Fig. 6a as a function of hydrogen concentration in the film.
XRD data for the polycrystalline and the epitaxial Pd film loaded with hydrogen are shown in Figs. 7 and 8, respectively.
Since VEPAS data did not show any increase of defect concentration in this range of hydrogen concentrations the stress release is likely caused by rearrangement of misfit dislocations existing already in the film.
The out-of-plane lattice constant for the first and the second generation grains determined from fitting of XRD data is plotted in Fig. 6a as a function of hydrogen concentration in the film.
XRD data for the polycrystalline and the epitaxial Pd film loaded with hydrogen are shown in Figs. 7 and 8, respectively.
Since VEPAS data did not show any increase of defect concentration in this range of hydrogen concentrations the stress release is likely caused by rearrangement of misfit dislocations existing already in the film.
Online since: December 2012
Authors: Xing Dan Zhu, Jing Zhou Zhang, Xiao Ming Tan
Three roughness configurations have been investigated, and the results have been compared with data for a smooth disk.
Convergence is achieved when both of the following criteria have been met: (a) reduction in all residuals of five orders of magnitude, and (b) no observable change in surface temperature prediction for an additional 30 iterations.
The temperature readings are then transferred to a data logger.
The instrument to record voltage and current, and data logger to record thermocouple readings are on a stationary table neat to the test stand.
Convergence is achieved when both of the following criteria have been met: (a) reduction in all residuals of five orders of magnitude, and (b) no observable change in surface temperature prediction for an additional 30 iterations.
The temperature readings are then transferred to a data logger.
The instrument to record voltage and current, and data logger to record thermocouple readings are on a stationary table neat to the test stand.
Online since: September 2013
Authors: Prabhat Kumar
The clean source of electricity by Fast Breeder Reactors is to make effective utilization of depleted uranium available in the country, use plutonium as a fuel with significant reduction in the radioactive waste.
MANUFACTURE OF PFBR EQUIPMENT AND MAIN CONSIDERATIONS: The major factors considered for the selection of materials include operating conditions, availability of design data in nuclear codes, ease of fabrication, International experience and safety [2,3].
Figure-4: Dished end profile inspection during fabrication using swing arm gauge In addition to radiography examination of Main Vessel weld joints, ultrasonic examination is specified as an additional requirement for generation of Pre-Service Inspection (PSI) data, which could be later used as base-line data for In-Service Inspection (ISI).
MANUFACTURE OF PFBR EQUIPMENT AND MAIN CONSIDERATIONS: The major factors considered for the selection of materials include operating conditions, availability of design data in nuclear codes, ease of fabrication, International experience and safety [2,3].
Figure-4: Dished end profile inspection during fabrication using swing arm gauge In addition to radiography examination of Main Vessel weld joints, ultrasonic examination is specified as an additional requirement for generation of Pre-Service Inspection (PSI) data, which could be later used as base-line data for In-Service Inspection (ISI).
Online since: September 2013
Authors: Ting Li, Wen Yi Dong, Hong Jie Wang, Jin Nan Lin, Feng Ouyang, Qian Zhang
The first-order constant (k) for SS removal was higher for the BAF using lower air superficial velocity than the case of using higher air superficial velocity (data are not shown).
The specific deposit data achieved the maximum accumulation (12043, 7592 and 4887 g/m3) at the air superficial velocity of 5.4 m/hr in the bottom three layers of 0-50, 50-100, and 100-150 cm.
The data indicates a clear trend: for almost the same mass of total solids deposited (shown in Fig.4), the distribution of the mass deposits with higher air superficial velocities showed relatively uneven.
This result indicates that even though the headloss in the whole filter changed slightly, there would be a growth of the headloss in the top section but a reduction in the bottom section as the air detachment, resulting in a decline of the difference between the headloss along the filter height.
The specific deposit data achieved the maximum accumulation (12043, 7592 and 4887 g/m3) at the air superficial velocity of 5.4 m/hr in the bottom three layers of 0-50, 50-100, and 100-150 cm.
The data indicates a clear trend: for almost the same mass of total solids deposited (shown in Fig.4), the distribution of the mass deposits with higher air superficial velocities showed relatively uneven.
This result indicates that even though the headloss in the whole filter changed slightly, there would be a growth of the headloss in the top section but a reduction in the bottom section as the air detachment, resulting in a decline of the difference between the headloss along the filter height.
Online since: July 2008
Authors: Shao Yi Wu, Guang Duo Lu, Li Hua Wei, Hua Ming Zhang
From the cluster approach, the spin-orbit coupling coefficients ζ and ζ', the orbital reduction
factors k and k' and the dipolar hyperfine structure parameters P and P' can be expressed as [19]:
ζ = N t (ζd 0 + λt 2
ζ p0
/2) , ζ' = (N t N e)
1/2 (ζd 0 − λ t λ e ζ p
0 /2) ,
k = N t (1 + λt 2/2 ) , k' = (N t N e)
1/2
[1−λt (λ e + λsA)/2] ,
P = Nt P0 , P' = (Nt N e)
1/2 P0
Obviously, they are in poor agreement with the experimental data, particularly the theoretical anisotropy gy − gx (≈ 0.01) is two order in magnitude smaller than the observed result (≈ 1.5 [11]).
Substituting the related parameters into Eq. 4 and fitting again the calculated g factors to the experimental data, we obtain ∆R ≈ 5.4%.
Discussion Table 1 reveals that the calculation results (Cal. e) of the spin Hamiltonian parameters for the Co 2+ center in CaTiO3 show reasonable agreement with the experimental data, by considering the local (planar) bond length variation ∆R and the J-admixtures based on the 6 × 6 energy matrix containing the contributions from ligand orbitals and spin-orbit coupling and the fourth-order orthorhombic crystal-field parameter Dη.
Obviously, they are in poor agreement with the experimental data, particularly the theoretical anisotropy gy − gx (≈ 0.01) is two order in magnitude smaller than the observed result (≈ 1.5 [11]).
Substituting the related parameters into Eq. 4 and fitting again the calculated g factors to the experimental data, we obtain ∆R ≈ 5.4%.
Discussion Table 1 reveals that the calculation results (Cal. e) of the spin Hamiltonian parameters for the Co 2+ center in CaTiO3 show reasonable agreement with the experimental data, by considering the local (planar) bond length variation ∆R and the J-admixtures based on the 6 × 6 energy matrix containing the contributions from ligand orbitals and spin-orbit coupling and the fourth-order orthorhombic crystal-field parameter Dη.
Online since: October 2013
Authors: Atthakorn Thongtha, Somchai Maneewan, Chantana Punlek, Weera Punin, Tanongkiat Kiatsiriroat
Table 2 shows the composition of the residues of three typical MBT systems.Also included in the data are dry lower heating values of this RDF-5.
However, it still needs further treatment to produce RDF of proper size reduction and compaction.
Table 8 Emissions of CO and NOx in the flue gas for RDF-5 combustion Components RDF-5 (15:85) RDF-5 (20:80) MSW [34] Standard [35] 600 oC 700 oC 800 oC 600 oC 700 oC 800 oC CO (ppm) 71 172 218 82 208 224 321 690 NOx (ppm) 1.00 2.67 5.33 1.17 4.33 7.00 18 250 Remark: The values shown are averaged from triplicate samples taken Table 9 A comparisons of energy production costs between RDF-5 and other fuels using Thailand data is shown in Table 8.
Fuel type Cost (฿/ton) HHV (MJ/ton) Per unit cost (฿/MJ) RDF-5 (15:85) 677.20 45,347 0.014 RDF-5 (20:80) 648.94 47,112 0.013 Bagasse[36] 806.90 31,131 0.033 Paddy Husk[36] 1,150.00 28,390 0.049 Lignite[37] 750.00 16,748 0.045 Bituminous[37] 1,300.00 25,104 0.053 Remark: The calculations are based on fuel cost in Thailand (2009).Exchange rate: 32.8023 ฿/USD, 39.2188 ฿/EUR.The exchange rates reference as the Krung Thai Bank Public Company Limited effective data on March, 2010.
However, it still needs further treatment to produce RDF of proper size reduction and compaction.
Table 8 Emissions of CO and NOx in the flue gas for RDF-5 combustion Components RDF-5 (15:85) RDF-5 (20:80) MSW [34] Standard [35] 600 oC 700 oC 800 oC 600 oC 700 oC 800 oC CO (ppm) 71 172 218 82 208 224 321 690 NOx (ppm) 1.00 2.67 5.33 1.17 4.33 7.00 18 250 Remark: The values shown are averaged from triplicate samples taken Table 9 A comparisons of energy production costs between RDF-5 and other fuels using Thailand data is shown in Table 8.
Fuel type Cost (฿/ton) HHV (MJ/ton) Per unit cost (฿/MJ) RDF-5 (15:85) 677.20 45,347 0.014 RDF-5 (20:80) 648.94 47,112 0.013 Bagasse[36] 806.90 31,131 0.033 Paddy Husk[36] 1,150.00 28,390 0.049 Lignite[37] 750.00 16,748 0.045 Bituminous[37] 1,300.00 25,104 0.053 Remark: The calculations are based on fuel cost in Thailand (2009).Exchange rate: 32.8023 ฿/USD, 39.2188 ฿/EUR.The exchange rates reference as the Krung Thai Bank Public Company Limited effective data on March, 2010.
Online since: February 2018
Authors: Dimitrios Dionysopoulos, Eugenia Koliniotou-Koumpia
The software Vision64TM was used to acquire the data and compute the mean surface roughness (Ra, Rq and Rz expressed in μm) on each image.
Having preliminarily checked that data distribution was normal in each experimental group (p>0.05) and that group variances were homogeneous (p>0.05) (Kolmogorov–Smirnov test and Levene’s test, respectively), the one-way ANOVA was applied to verify the existence of statistically significant between-group differences, followed by the Tukey’s test for post hoc comparisons (Bonferroni corrected) at a level of significance of a=0.05.
Recent literature data show conflicting results whether surface roughness of nanofilled composites really influence biofilm formation, and it seems that the statement and the identified threshold of 0.2 μm was only true until the previous generation of microhybrid composites [12].
Dissolution of inorganic fillers occurs due to to the presence of hydrofluoric acid which comprised by hydrogen and fluoride ions in APF gel, leading to reduction in surface microhardness [20].
Having preliminarily checked that data distribution was normal in each experimental group (p>0.05) and that group variances were homogeneous (p>0.05) (Kolmogorov–Smirnov test and Levene’s test, respectively), the one-way ANOVA was applied to verify the existence of statistically significant between-group differences, followed by the Tukey’s test for post hoc comparisons (Bonferroni corrected) at a level of significance of a=0.05.
Recent literature data show conflicting results whether surface roughness of nanofilled composites really influence biofilm formation, and it seems that the statement and the identified threshold of 0.2 μm was only true until the previous generation of microhybrid composites [12].
Dissolution of inorganic fillers occurs due to to the presence of hydrofluoric acid which comprised by hydrogen and fluoride ions in APF gel, leading to reduction in surface microhardness [20].
Online since: July 2021
Authors: Wen Jing Chen, Rui Cao, Xiao Xuan Li, Ge Song
The main survey data is analyzed below.
The research team obtained rough data through interviews with the construction team.
This is very close to the data(1.42 times) in ref. [9].
This conflicts with the conclusion in ref. [13] that three bedrooms are appropriate due to the reduction of the family population.
The research team obtained rough data through interviews with the construction team.
This is very close to the data(1.42 times) in ref. [9].
This conflicts with the conclusion in ref. [13] that three bedrooms are appropriate due to the reduction of the family population.
Online since: September 2013
Authors: Amir Al-Ahmed, Haitham M. Bahaidarah, Mohammad A. Jafar Mazumder
Moreover, polyaniline synthesized with these polyelectrolytes maintains charge neutrality during reduction and this poses an added advantage for immobilization of the biomolecule.
The bio-catalytic reaction involves the reduction of the flavin group (FAD) to (FADH2) of the enzyme by glucose.
All these biosensor systems that were prepared using PANI and its derivatives were successfully categorized using a range of instrumental techniques and most of them showed good detection limits, stability and fast response time compared with the data of other biosensors available in the literature.
Though some commercial biosensors are trying to use polyaniline, but not very specific data is available regarding PANI’s use as a viable biosensor.
Morphology and chemistry of its oxidation and reduction in aqueous electrolytes, Faraday Trans. 82 (1986) 2385-2400
The bio-catalytic reaction involves the reduction of the flavin group (FAD) to (FADH2) of the enzyme by glucose.
All these biosensor systems that were prepared using PANI and its derivatives were successfully categorized using a range of instrumental techniques and most of them showed good detection limits, stability and fast response time compared with the data of other biosensors available in the literature.
Though some commercial biosensors are trying to use polyaniline, but not very specific data is available regarding PANI’s use as a viable biosensor.
Morphology and chemistry of its oxidation and reduction in aqueous electrolytes, Faraday Trans. 82 (1986) 2385-2400
Online since: November 2005
Authors: Harshad K.D.H. Bhadeshia
(a) (b)
Fig. 4: (a) Wear and (b) rolling-contact fatigue resistance determined in whole-wheel tests, of
carbide-free bainitic rail steels; data from Jerath [17].
Elements such as molybdenum and vanadium must be used cautiously because their addition can lead to an increase in strength, which in turn can trigger a reduction in toughness.
Typical performance data are illustrated in Fig. 4 and Fig. 6.
Table 1: Characteristics of the new rails and associated data for the Swiss and French applications (Howard Smith, Corus).
Elements such as molybdenum and vanadium must be used cautiously because their addition can lead to an increase in strength, which in turn can trigger a reduction in toughness.
Typical performance data are illustrated in Fig. 4 and Fig. 6.
Table 1: Characteristics of the new rails and associated data for the Swiss and French applications (Howard Smith, Corus).