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Online since: May 2020
Authors: Ekaterina Podjelnikova, Valery Dyubanov, Pavel Grudinsky
The methods of pyrometallurgical processing of ZLR by reduction smelting [8], reduction roasting [9-11], flotation processing with preliminary sulphiding roasting [12], roasting with Na2CO3 [13-15] are known.
XRD pattern of ZLR sample Fig. 2 and 3 show the flowsheets that were developed for selective dissolution of different zinc and copper phases based on the data in [22].
Due to the absence of thermodynamic data for ktenasite Cu2.4Zn2.6(SO4)2∙(OH)6∙6H2O it was recalculated to the corresponding sulphates of zinc ZnSO4∙6H2O and copper CuSO4∙5H2O.
Mixture components ZLR to iron sulphate ratio Recovery rate [%] Zn Cu Fe 1 ZLR without roasting - 23.5 41.8 - 2 ZLR + FeSO4∙7H2O 1:2 99.5 88.9 2.6 3 ZLR + Fe2(SO4)3∙9H2O 1:1 98.5 89.1 1.8 The obtained data shows that sulphatizing roasting leads to much more complete recovery of zinc and copper compared to the unroasted ZLR.
Yuan, Recovery of iron from zinc calcines by reduction roasting and magnetic separation, Miner.
Online since: July 2017
Authors: Anna Timoszyk, Joanna Niedbach, Paulina Śliżewska, Agnieszka Mirończyk, Jacek J. Kozioł
The accumulation and reduction of gold were followed by visual observation of the samples turning purple.
The recorded spectral data were then plotted using the UV Probe.
We obtained rapid synthesis only when using living cells (data not shown).
At all temperatures only nanospheres were synthesized by the suspension and supernatant (data not shown) of P. aeruginosa.
In the present study, in the experiment conducted at 90oC, an intense peak at around 537 nm appeared within 15 min (data not shown), indicating that denatured proteins also synthesized GNPs.
Online since: January 2013
Authors: Yan Hui Jiao
Lubricant can contribute to reduction of overall noise and vibration generated by machines, both by reducing generation of acoustic energy in lubricated contacts and by modulating the transmission of vibration through the lubricant.
This section will outline some of these mechanisms and suggest how lubricant optimization can contribute to reduction of noise generation at source.
Noise reduction in system lubricants Foam generation and vapor entrainment depend partially on bulk lubricant properties such as viscosity, but are more sensitive to interfacial properties such as dynamic surface tension, Gibbs elasticity and interfacial shear and dilational viscosities[3] Refrigeration lubricant formulations for improved noise and vibration performance must maintain stable, controllable levels of foam and vapor entrainment in order to deliver improved acoustic performance without compromising reliability and efficiency.
Figure 2 shows vibration velocity data recorded on the base of the compressor shell, for two different lubricant base-fluid types having different inherent foaming performance, formulated with different concentrations of the same acoustically active additive.
In the case of domestic appliance refrigeration compressors, use of acoustically optimized lubricant formulations, designed to deliver controllable levels of foaming and vapor entrainment, can significantly reduce compressor shell vibration amplitude translates into reduction in radiated sound power intensity.
Online since: May 2016
Authors: Marco Mauceri, Francesco La Via, Hans von Känel, Danilo Crippa, Ivan Prieto, Thomas Kreiliger, Marco Puglisi, Mojmír Meduňa, Leo MIGLIO, Fulvio Mancarella
A significant reduction of SF density with respect to planar material was observed for the {111} planes parallel to the ridges.
A significant reduction of SF densities has been achieved by Nagasawa et al. in their pioneering work on undulant-Si and variations there from [1].
Fig. 4. a) Perspective SEM image of a defect at the upper edge of a 3C-SiC ridge. b) EBSD data overlaid on SEM image.
An EBSD image taken in this region is shown in the middle and the corresponding image after noise reduction on the right of Fig. 4.
La Via, Defect reduction in epitaxial 3C-SiC on Si(001) and Si(111) by deep substrate patterning, Materials Science Forum 821-823 (2015) 193-196.
Online since: January 2013
Authors: Xian Zheng Gong, Su Ping Cui, Chen Li, Hong Tao Wang, Xian Ce Meng
Data for cement produced in MSC and LNB technology is analyzed.
The data is collected from the real clinker production situation and the measurement is taken in 12 hours continuously.
The input and output data was from this report.
Considering the formal fluctuations of emissions, some data are shown in min and max form.
Data for cement producion in MSC and LNB technology can be established.
Online since: December 2012
Authors: He Sheng Tang, Chang Yuan Hu, Li Xin Deng, Song Tao Xue
In this paper, evidence theory is proposed as an alternative to the classical probability theory to handle the imprecise data situation.
Recently, evidence theory has become a focal point of research in international academic, and is widely used in uncertainty reasoning, target identification, fault diagnosis and data fusion [3,4,5,6].
In fact, data in the case (a) can be regarded as a special case of data in the case (b) when the uncertain parameter is taken a single value.
Evidence theory can represent many types of uncertain data, and it has good compatibility with probability theory, so evidence theory has the potential to handle epistemic uncertainty quantization.
[5] Zhang Xiaoming, Wang Hangyu, Huang Da, Cooperative multi-platform data fusion based on D-S evidence theory, Computer Engineering, 2007, 33(11): 242-243(246)
Online since: June 2021
Authors: Surasak Suranuntchai, Benjaphorn Khuanngern
Therefore, it is vital in building production capacity to achieve cost reduction.
The material properties data needed to input into the FE program used could be represented in Fig. 3.
However, when adjusting pressure range 2.3 -1.7 bar, the simulation results showed the reduction of cracking tendency zone on the part (having better formability) as seen in Fig. 7.
The pressure, which adjusted decrease 2.3 bar to 2 bar, had shown the reduction of the crack and cracking tendency zone on the part, when comparing with the previous pressure.
In addition, sincere thanks must be given to Stainless Steel Home Equipment Manufacturing Co., Ltd. for useful advice and providing the importance data about the parts.
Online since: July 2007
Authors: Xing Dong Zhang, Yao Wu, L. Zheng, J.M. Luo, X.H. Shi
Based on CT scan data, relatively accurate model of femur for finite element analysis (FEA) were obtained.
A patient with left leg at higher amputated position provided the resource of CT data of residual femur, which was shown in Fig.1.
The data were given in the DICOM format and can be transfered into the CAD software.
Maximal stress of new type of implant was 207.00MPa and that of one-part implant was 240.98MPa, and maximal perpendicular Fig.1 CT scan data Acetabulum Fig. 2 Improved design of osteointegrated implant a:CAD model b: FE model distal part lag part femur Fig.3 model of the assembly deformation was 0.0918cm and 0.0682cm, with the reduction of 14.51% for the former and 25.7% for the latter.
Furthermore, the reduction of peak stress promoted with the increasing of loads, which is sharp under abnormal loads.
Online since: February 2018
Authors: Jan L. Vítek, David Čítek, Pavel Jursík
More resilient connection of shear sheets to the top flange and a high resistance of UHPC allow for reduction of the extent of shear connectors.
During the experiment it has been proven that the performance of the beams with both variants of shear connection is very similar even with the significant reduction of the extent of shear connectors.
Numerical Analysis The main goals of the numerical analysis are proving the possibility of reducing the amount of shear connectors, evaluating of influence of the reduction of extent of shear connectors on stiffness of the girder in bending, evaluating of load bearing capacity of the new proposed shear connection, description of its behavior and description of the stress state around the local puzzle sheets.
It was proven that the new proposed connection of precast elements providing also the shear connection of the precast deck and the steel structure is able to resist combined loading and it is not a cause of any reduction of stiffness in bending and thus the proposed connection has no influence on distribution of internal forces and it can serve as full shear connection [4].
In the future there should be gathered more data and information from experimental measurements for determining of load bearing capacity of this type of shear connection.
Online since: February 2012
Authors: Hsien Ta Lin
E-mail: sd471216@yahoo.com.tw Keywords: Data envelopment analysis; Efficiency; Life Insurance Industry Abstract.
This study sourced the 2010 data of 25 Taiwanese life insurance companies, and conducted data envelopment analysis (DEA) to evaluate their operating efficiencies.
The data are sourced from 25 insurance companies in 2010.
Two-stage evaluation of bank branch efficiency using data envelopment analysis.
Efficiency measurement using independent component analysis and data envelopment analysis.
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