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Online since: October 2014
Authors: Mohd Faizal Mohideen Batcha, Hamidon bin Salleh, Vijay R. Raghavan, Suzairin bin Md Seri, Zainal Ambri bin Abdul Karim
The results obtained were compared to the experimental data of Seri et al. (2014).
Sano, A note on the drag reduction for a circular cylinder due to double rows of holes, Fluid Dyn.
Yajima and O.Sano, A note on the drag reduction for a circular cylinder due to double rows of holes, Fluid Dyn.
Online since: December 2011
Authors: S.A. Teryusheva, G.S. Beloglazov, S.M. Beloglazov
Such corrosive media appear as a result of active sulfate reduction [1].
In sea water, pitting corrosion would develop under the influence of SRB; active sulfate reduction leads to significant hydrogen absorption by steel.
Eh defines sulfate reduction rate.
Data obtained for steel St3 corroded at OC concentration of 5 mMol×dm–3, are presented on Fig. 3.
Table 1 contains experimentally measured efficiencies of OС action inhibiting corrosion of steel St3 that have been determined gravimetrically on the basis of measurements performed at corrosion media with SRB, as well as the data on OC efficiencies of inhibiting hydrogen absorption by steel.
Online since: May 2015
Authors: Tawatchai Charinpanitkul, Sira Srinives, Kanin Selamassakul, Navapass Peaunbida, Suchaporn Jiamjitton, Chinnawich Phamornnak, Chotiros Plabplueng, Bovornlak Oonkhanond, Worasak Klongthong
The IR transmittance of rGO appeared to be relatively flat, indicating disappearance of functional groups after the chemical reduction with L-AA.
However, it was observed that the error bar of the sensing response at pH 3 was exceptionally high, which requires further investigation with more sensors and sensing data.
The data were interpreted from two identical sensors.
Conclusion The rGO was successfully synthesized by a modified Hummers method, followed by chemical reduction with L-AA.
Guo, Reduction of graphene oxide via L-ascorbic acid, Chemical Communications, 46(2010) 1112-4
Online since: May 2022
Authors: Wan Ryan Asri, Afrianti Meilani, Nova Yuliasari, Hasanudin Hasanudin
FFA reduction (X) was calculated according to the initial and remaining free fatty acid concentration difference.
The data can be considered valid if the determination coefficient value is close to 1.0 [8].
Fig. 2 Shows the correlation between the experimental and predicted value from the mathematical model of FFA reduction.
Thus, the kinetic model can well predict the reduction of free fatty acids.
Validation data shows that the kinetic equation model can be accepted for calculating free fatty acid esterification of SPO kinetic with a determination coefficient of 0.9612.
Online since: April 2013
Authors: Marion Merklein, Livan Fratini, Wolfgang Böhm, Davide Campanella
For instance, chassis exclusively made of aluminum sheet metals provide weight reductions for a mid-class car body of 200 to 300 kg [1].
The experimental analysis was carried out to obtain the material behavior using different numbers of cycles, and to validate the numerical results in comparison with the data measured during the experimental tests (such as the pressure on the lateral arms of the roll and velocity of the roll themselves).
The entry thickness (hin) and the width (win), the exit thickness (hout) and the width (wout), the reduction per cycle and the measured separating forces, on the two sides of the roll, are given in this table.
Once the material behavior was inserted into the code, in order to compare the numerical model with the real case, the machine output data and the results of the numerical model were compared.
Furthermore, the 2D model can be used also to predict other tool parameters, such as the maximum reduction to be applied or the maximum pressure on the roll or even the rolling velocity.
Online since: July 2015
Authors: Christian Hühne, Robert Prussak, Daniel Stefaniak, Michael Sinapius
This paper focuses on the reduction of process-related thermal residual stress in fiber metal laminates and its impact on the mechanical properties.
The reduction of the residual stress leads to an increase in strength.
In addition, the calculated curves by (6) for a metal volume fraction of 65% and material data of Table 1 are presented, which show a good correspondence to the measured values, with a calculated strength increase of 3.6%.
[8] Hexcel, HexPly 8552 Epoxy Matrix - Product Data, 2008
Matsubara, Reduction of thermal residual stress in carbon fiber aluminum laminates using a thermal expansion clamp, Composite Part A: Science and Manufacturing. 42 (2011) 986–992
Online since: July 2018
Authors: Yuriy S. Nechaev
On Mechanisms of “Grain Boundary Sliding”, in Light of the Kaibyshev-Valiev Data on Two Limit “Non-Equilibrium” GB States in Deformed Metallic Materials Yuriy S.
According to experimental data (e.g., [18, 19]), there is some mutual turning of grains during superplastic deformation of materials.
In a number of works, including [39] on Co75Ti25 alloy and [40] on Ti50Ni25Cu25 alloy, experimental data on the cyclicity of the amorphization of a material were obtained that in some sense conformed to the data in Fig. 1 (and Fig. 3a in [11]), along with the data in [41] on the amorphization of Ti–Ni alloys (with the shape memory effect) via cold rolling (ε = 0.5).
Another series of relevant problems that could be solved using the concept of periodic formation of a local liquid-like state in metallic materials during IPD should also be noted: (1) interpreting data on diffusion abnormalities [11, 13, 27, 42]; (2) interpreting data on the bimodal distribution of grain sizes (nanosizes and microsizes) [11, 13, 38, 43, 44]; (3) interpreting data on abnormal slip bands [11, 38, 43, 44]; (4) data on the high local stresses in the regions of grain boundaries, the waviness of grain boundaries, and intergrain cracking [10, 11, 13]; (5) data on the “nanocrystallization” of amorphous materials [11, 38, 40, 42, 44]; and (6) data on high-speed superplasticity [45].
Priority data of April 13, 1977
Online since: October 2010
Authors: Xiang Wei Chen, Zhi Kui Zhang, Zhao Hui Liu
The main Image processing approaches is used such as Smoothing process, Noise reduction, Edge detection, Region Splitting, and Hough Transform etc.
(1) where is the height of roughness irregularities from the mean value and is the number of sampling data.
Fig.3 (b) shows the Noise reduction and Smoothing object processing image.
Online since: June 2008
Authors: Sabet Divsholi Bahador, Lei Zhang, Yao Wen Yang
The reduction in actuation as a result of strain distribution inside the actuator is considered to improve the prediction ability of the existing model based on the Bernoulli-Euler formulation.
In this work, the existing 1-D Bernoulli-Euler formulation for strain transfer is extended to 2-D cases and also improved to account for the reduction in actuation as a result of strain distribution inside the actuator.
The uniform strain model shows a good fit to the experimental data with thickness of epoxy equal to 0.1 mm but the prediction accuracy decreases with the increase in thickness of epoxy.
Online since: June 2024
Authors: Mahmoud M. Abd El-Razik, Abeer Al-Desouqi, Nour K. Bahgat, Toaa M. El-Shazly, Tasneem A. Imam
The weather data files follow the seven climate regions and the different cities, starting with Alexandria, then Cairo, Minya, Asyut, Hurghada, Kharga, and finally Aswan.
The simulations will also compare the most recent weather data files for 2021 with the original from 2006 to determine whether they are still applicable to today's energy depletion rates.
The methodology involves employing quantitative research to analyze the impact of climate change on energy consumption rates, utilizing records from ECEEE and Egypt’s weather data files.
The weather data files represent seven climatic regions, with cities including Alexandria, Cairo, Minya, Asyut, Hurghada, Kharga, and Aswan, each corresponding to a specific region.
The study assesses the applicability of these values to current energy depletion rates by comparing recent weather data files from 2021 to the original records from 2006.
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