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Online since: June 2022
Authors: João Bessa, Luisa M. Arruda, Raul Fangueiro, Inês P. Moreira, Inês Boticas
After receiving the alkaline pre-treatment, a not very significant reduction occurred with respect to this property (WCA 168.84º ± 6,8200), in addition to presenting a high standard deviation.
Furthermore, there is an increase in the absorption band of all functionalised samples, which indicates a reduction in the reflectance band.
This result may indicate that, in addition to PEG contributing to the reduction of electrical resistance values, when compared to plasma treatment, alkaline treatment made the substrate more reactive for PEG bonds.
This result confirms the data obtained in the Ground-State Diffuse Reflectance and Contact Angle of this sample, considering that polar functional groups on the surface of the cotton substrate by the addition of water, added to the plasma discharge, make the cotton knitted fabric more adsorptive and hydrophilic, therefore, contributed to their electrical resistance value reduction (Figure 6) Figure 6.
Online since: September 2008
Authors: Lucia Faravelli, Clemente Fuggini, Filippo Ubertini
For every test, four sets of data are recorded by the accelerometers: two in-plane accelerations, 1v&& and 2v&& , and two out-of-plane accelerations 1w&& and 2w&& .
As for the previous tests, representing the uncontrolled vs controlled responses permits to clearly evaluate the reduction of the in-plane and out-of plane accelerations, which is achievable by applying the wrapped pre stressed SMA wire (see Fig. 10,11).
The experimental results outline that the benefit introduced by the SMA wire consists in a reduction of the peak resonant response (see Fig. 12, where only the backward phase for each result is plotted).
The results emphasizes the reduction of the amplitude of vibration due to the presence of the wrapped SMA wire.
Moreover, close to the main resonance, the semi-active controller guarantees a further reduction of the cable response.
Online since: August 2004
Authors: Régine Molins, Yves Bienvenu, H. El Kadiri
An important reduction in the alumina-growth rate on the fusion zone occurs at 900°C, thereby, suppressing the discontinuous increase in mass gain commonly observed during the high temperature oxidation of alumina-forming alloys.
To our knowledge, advanced joining methods with high energy beams have not yet been successfully used to fix monolithic matrices in spite of their promising cost reduction and productivity improvement.
Quantitative analysis of major and trace elements with EDS and WDS-EPMA performed on cross-sectional specimens polished down to 1/4 µm are presented in Table 1 in comparison with the chemical composition data provided by the steel-maker [3].
As such, the reduction of oxidation kinetics on the FZ manifests as a slowing of the structural changes controlling the establishment of the compact layer.
Conclusion The examination of the scales and metal/scale interfaces evolving on the BM and laser FZ at 900°C reveals a variety of time-dependent microstructural and morphological differences that can account for the considerable reduction in the oxidation kinetics of the fusion zone.
Online since: November 2025
Authors: Saad K. Shather, Tahseen M. Salman, Baraa M.H. Albaghdadi
Moreover, when substantiated by actual data or comparisons to conventional finishing techniques—such as grinding or polishing—the rationale becomes more compelling and technically robust.
Results indicate significant surface roughness reduction and removal of recast layers, enhancing surface quality without micro-shaft deformation.
The machining procedure of shear cutting is the most harmful when it comes to surface imperfections that cause a considerable reduction in fatigue life.
- No tribological tests (wear/corrosion) post-finishing. evaluated the impacts of fatigue life, microcracks, discharges craters, and recast layers in microtools made via wire-electrical discharges grinding (WEDG) Results indicate significant surface roughness reduction and removal of recast layers, enhancing surface quality without micro-tool deformation. [31] fluid magnetic abrasives (FMA) micro-shafts of tungsten - Recast layer removal mechanisms in WEDG parts require further investigation. improve the surface quality of micro-shaft surfaces created by wire-electrical discharges grinding (WEDG) to prevent microcracks, discharge craters, and recast layers.
Results demonstrate significant surface roughness reduction, uniform material removal, and removal of recast layers, enhancing surface quality without micro-shaft deformation. [32] laser cutting, shear cutting, wire cutting, or polished. electrical steel sheet - Edge-finishing MAF methods for steel sheets not compared to conventional techniques. evaluates how the edge surface affects the fatigue behavior of thin electrical steel sheets under repeated loading. similar fatigue patterns, particularly at low cycle counts.
Online since: January 2017
Authors: Jian Yu Li, Ying Li Zhu, Gang Qi, Jun Zhang
Wang [8] designed dealloyed PtAuCu electrocatalyst to improve the activity and stability of both oxygen reduction and methanol oxidation reactions.
With the changes in the geometric, electronic and surface structure, the PtAuCu electrocatalyst shows an enhancement in oxygen reduction reaction and methanol oxidation reaction activity, as well as an improvement in their stability.
Table 1 Basic data of Toray carbon paper [9].
As for the cathode catalyst, the most concern is to improve the electrocatalytic activity for the oxygen reduction and resistance to methanol [18][19].
Fu: Dealloyed PtAuCu electrocatalyst to improve the activity and stability towards both oxygen reduction and methanol oxidation reactions, Electrochimica Acta Vol.212 (2016), p. 277-285
Online since: September 2011
Authors: Da Jin Li
The realistic application demonstrates that the SSCMT system has brought good results in reduction of training cost, stimulation of learning interest, and improvement of training quality.
Work in coal mine varies a lot and objects and ways of operation differ very much, which can be divided into three kinds: machine operation, data detection and walking in underworkings.
Online since: July 2014
Authors: Fan Jin Song, Shu Qin Tian, Dong Qiang Wang
The number of rural population reduction and demographic imbalance greatly influenced the process of building new socialist village.
The sixth national census data show that the Chinese population geographical distribution is undergoing profound changes; the central province of hollowing trend is higher than the eastern and western provinces.
Online since: August 2019
Authors: Budhy Kurniawan, Dhawud Sabilur Razaq, Agung Imaduddin
Comparison of resistivity (ρ) data with the theoretical model shows that the electrical properties of both samples are well described using the electron-electron, electron-phonon, electron-magnon, and kondo-like spin dependent scattering theory.
Fig. 2 (b) shows the resistivity data obtained in zero magnetic field for LBSMO and LBSMCO-5 samples.
Temperature dependence of resistivity data analyzed using percolation model for (a) LBSMO and (b) LBSMCO-5.
The insets on both figures represent the metal insulator transition obtained using the first derivation of resistivity data.
It can be seen from the obtained R2 value that the resistivity data are well fitted using the percolation model, thus it can be said that the obtained parameters from this model are eligible to express the transport mechanism in both samples.
Online since: February 2017
Authors: György Czél, Mate Zattler
The aforementioned markings were indicated on the materials by the manufacturer but no technical data sheet was attached to them.
In our paper, the simple process of control-calculation is merely described omitting the iteration set of exact technological data.
The data used for the calculation are as follows: Volume of moulding cavity: V=511.9 cm3, time of filling the cavity: t=5.82 s, the smallest size of cross section at the nozzle: A=2.83*10-5m2.
It was necessary to apply the Rabinowitsch and Bagley corrections in order to get more precise flow data.
By knowing the geometrical data of our test capillaries, the actual value of apparent viscosity was calculated from the volume rate by using the Hagen-Poiseuille relationship.
Online since: September 2005
Authors: Cecilia Surace, Marco Gherlone, Massimiliano Mattone, Alessandra Tassotti, Alexander Tessler
One of the drawbacks of these methods is that the data of the undamaged structure are necessary for a comparison with the data of the damaged one.
Effects of random error in the curvature data are also studied in order to ascertain the sensitivity of the method to noisy experimental data.
Furthermore, distribution of the discrete data can be completely arbitrary.
Effects of random error in the curvature data were also studied in order to ascertain the sensitivity of the method to noisy experimental data.
Since the experimentally measured data are inherently noisy, the sensitivity of the considered technique to the noise affecting measured data is of primary concern.
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