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Online since: December 2012
Authors: Zhe Lü, Yan Wei Liu
The transient behavior in the re-equilibration process was analyzed by fitting the relaxation data to the solution of Fick’s second law with appropriate boundary conditions[10].
Thermal expansion curve for LSCF Thermal expansion Thermal expansion data obtained upon heating for LSCF is given in Fig. 2.
Specific TEC values Sample TEC (10-6 K-1) 30~600oC 600~800oC 30~800oC LSCF in air 14.4 18.0 15.3 The appearance aboved can mainly be attributed to: (1) the loss of lattice oxygen(so- so-called β-desorption of oxygen) and the formation of oxygen vacancies; (2) Simultaneously, the reduction of the Fe and Co ions from higher to lower valences, must occur with the creation of oxygen vacancies in order to maintain the electrical neutrality[13].
According to analysis, the reason is that small polaron hopping mechanism dominates the electron conduction at low temperature, while the charge compensation of oxygen vacancies at high temperature. the loss of lattice oxygen and the formation of more oxygen deficiency, which thus caused the thermal reduction of Co and Fe cations to lower states[15].
The conductivity decrease above 600 is attributed to the loss of lattice oxygen and the formation of more oxygen deficiency, which thus caused the thermal reduction of Co and Fe cations to lower states.
Online since: December 2013
Authors: Chiu Yu Cheng, Fang Yu Liang, Ying Chien Chung
The optimal pH range for CV biodegradation (50 mg/L) by A. hydrophila YC 57 in the single-chambered MFC was found to be 6 to 8 and average 96.5±0.7% degradation efficiency was achieved (data not shown).
The optimal temperature range was found to be 25 to 35oC and average 95.2±0.5% degradation efficiency was achieved (data not shown).
Oxidation and reduction peaks of anolyte were not obvious at initial 4 h.
When operation time achieved 6 h, oxidation and reduction peaks were observed at 0.15 V and -0.18 V, respectively.
When operation time achieved 8 hours, oxidation and reduction peaks increased to 0.18V and -0.16V, respectively.
Online since: October 2014
Authors: Adrian Judele, Valentin Zichil, Aurelian Albut
Introduction The cars makers are constantly searching for innovative methods that will lead to reduction of the car body weight simultaneous with reduction of the productions cost.
A very promising opportunity, to satisfy all the requirements (production costs and reduction weight) is to use semis made from bimetallic sheets, known initially as Tailor Welded Blanks (TWBs).
The data obtained during simulations was loaded in postprocessor software for measurements.
The remaining 0.171% is attributable to deviations from the model. which may be due to other factors. to measurement error. or to a failure of the current model to fit the data adequately.
Online since: August 2016
Authors: F.R. Cúnico, T.J.B. Schmitt, R.L.P. Carnin, M.A.B. Bruno, Marilena Valadares Folgueras
The values of weight loss resulting from calcification are shown in Table 1, which also shows the data of chemical analysis in the form of percentage by oxide mass.
Furthermore the tables show data from different particle size distribution, considering that the largest differential is the fraction of fine particulate.
Moreover, the reduction will not be effective if an improvement in compression efficiency occurs.
The decrease of the relative density with an increase in compaction pressure confirms the relationship between the reduction of density with the generation of volatiles.
For the sintered material at 1000°C the effect of the use of the residue in the reduction of porosity can be highlighted, which is associated, at first, with the best compacting effect resulting from change in the particle size distribution of the mixtures, caused by the introduction of the waste.
Online since: September 2021
Authors: Francisco Ramírez Rivera, Víctor González Holguín, Jesús Cuadrado, Yokasta García Frómeta
Recent research has shown evidence that in countries with a tropical climate, the usage of thermal insulation in façade solutions can help in the reduction of internal temperatures when applied over the traditional constructive solution [2].
In addition, it shows how the 3R methodology (reduction, reuse and recycling) can be used for the development of thermo-acoustic insulations based on residues.
A USB interface is employed to connect the acquisition unit to the computer to record and store all the data.
The data was collected every minute for 108 minutes.
At the same time, it allows the reduction of organic fiber waste generated in the agricultural sector, valorizing the waste through the production of a new product with insulating characteristics.
Online since: August 2021
Authors: Xiao Yong Wang
Benitez et al. [8] presented a carbonation model considering real degradation data.
The reduction of service life due to global warming is clarified based on parameter analysis.
Relative Service Life Reduction due to Global Warming Parameter Analysis of Service Life.
Parameter analysis of service life Service Life Reduction due to Global Warming.
Analysis of correlation between real degradation data and a carbonation model for concrete structures.
Online since: November 2016
Authors: Michael Ferry, Jia Qi Duan, Md Zakaria Quadir
Rolling was carried out at ambient temperature to ~50% reduction per cycle.
Data acquisition was conducted in several areas covering near surface, quarter- and centre-thickness regions of the processed sheet for finding the texture inhomogeneities throughout the sheet thickness.
Data from various regions were combined to represent the overall texture of the corresponding sample.
Further reductions in the inclination would make this LAGB seem to be parallel to RD.
When simulating the textures for fcc metal with a reduction of 95%, component ε ND-RD was introduced to the relaxed constraints model [14], which allows less than five slip system to operate considering the stress continuity condition at grain boundaries.
Online since: August 2015
Authors: Nofri Yenita Dahlan, M.A. Abdul Aziz, S.M. Shokri
Four investment scenarios have been considered i.e. 1) 5% annual increment in capacity rate financial (CRF) and fixed operating rate (FOR), 2) 5% annual reduction in CRF and FOR, 3) escalation in fuel price and 4) 2.5% annual escalation in FOR and variable operating rate (VOR).
Test Data The technical and cost parameters of the Prai Power Plant are shown in Table 1.
In this case, there is no annual escalation or reduction is considered in the uncertainty parameters.
The reduction in CRF and FOR by 5% each year would reduce the levelised tariff to 32.8sen/kWh.
We would also like to acknowledge Mr Mohd Rizal bin Ramli, Head of Capacity Planning from Energy Commission (EC) Malaysia and Mr Moha Zaini Jamil, Senior Engineer (Mechanical) from Tenaga Nasional Berhad (TNB) who provides us with valuable data and system information for the studies.
Online since: October 2020
Authors: Ismel V. Musov, Azamat A. Khashirov, Azamat L. Slonov
There is little data available in the literature describing the effect of FDM-printing technology on the properties of the resulting products and they relate to a relatively narrow range of polymeric materials, namely polylactide (PLA), acrylonitrile butadiene styrene (ABS) and polyetherimide (PEI) with the commercial name ULTEM 9085.
The rheological data of the polyphenylene sulfone matrix and the composite based on it were obtained using an LCR 7000 capillary rheometer of DYNISCO (USA).
And the composite material with more viscosity than pure PPSF can’t provide enough adhesion in the small contact spot which leads to the properties reduction.
The weight of bars and “dogbones” printed with sparse filling in comparison with the + 45/-45 ° mode Size of grid, mm Bar weight, g “Dogbone” weight, g Sparse mode 1 (rhombus) 3.35 1.97 2 (rhombus) 3.03 1.86 3 (rhombus) 2.85 1.80 4 (rhombus) 2.75 1.77 3 (hexagonal) 2.91 1.82 4 (hexagonal) 2.78 1.75 +45/-45 mode - 3.60 2.00 The results of the study demonstrate a weight reduction from 8 to 23 % in the case of bars and from 1.5 to 12.5 % in the case of “dogbones”, which suggests that the percentage of weight reduction depends on the geometry of the printed product.
Online since: November 2016
Authors: Rustam Kaibyshev, Anna Mogucheva, Mikhail Lebyodkin, Tatiana Lebedkina, Diana Yuzbekova
It follows from Eq. 1 that the strength increases with a reduction in the grain size.
These plates, ~10 mm thick, were rolled at ambient temperature with a total reduction of ~90 pct. providing a final thickness of ~ 1.1 mm.
The CR with a total reduction of 90 pct. leads to a decrease in the transverse size of coarse grains to ~1.8 μm.
It can be suggested that two different linear dependencies correspond to the data points.
The first one describes the effect of grain size on YS for the 5024 alloy with a moderate dislocation density, while the second one approximates data for cold-rolled samples characterized by high dislocation densities.
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