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Online since: June 2025
Authors: Marek Kočiško, Martin Pollák, Jakub Kaščak, Peter Gabštur
Experimental design is based on the mathematical principle of accumulating data from various random solutions and allowing for intervention by the designer.
Advantages include high design freedom, material waste reduction, rapid iteration and prototyping, production of complex and lightweight structures such as lattices and organic shapes, and use of various materials.
The resulting design is an optimized shape, which often requires additional processing and adjustments to accommodate manufacturing capabilities.[13] Fig. 2 Progressive material reduction through topology optimization tools.[13] Topology Both design approaches can be combined within a single design process.
A 25% reduction in vehicle weight can eliminate fuel consumption by approximately 10%, while a 25% reduction in aerodynamic drag will only result in about a 5% decrease in fuel consumption.
This way, we achieved a significant reduction in weight while maintaining the desired strength and functionality of the prototype.
Online since: July 2006
Authors: B. Bonnetot, A. Gervasini, G. Postole, A. Auroux
The TEM micrograph presented in Fig. 3 shows clearly that several particles are stacked into larger particles, which was favoured by the oxidation-reduction cycle of palladium.
The nanoparticles gathered at the support grain border aggregated after heating and oxidation of palladium leading to larger particles after oxidation-reduction cycles.
Ethyleneglycol was used as the dispersing phase and the reduction of precursors into metal was performed using hydrazine as previously operated.
Catalyst SBET [m 2/g] Metal [wt%] Metal particle size [nm] Pd/BN_glc 221 0.74 16 Pt/BN_glc 220 0.73 12 Ag/BN_glc 250 1.16 31 Au/BN_glc 249 0.34 16 The metal particle sizes for each catalyst were obtained from XRD data for the calcined samples, using the Scherrer formula as previously reported.
Unfortunately the nanoparticles deposed seem to be gathered and they collapse into larger aggregates during the thermal oxidation-reduction cycles applied to palladium.
Online since: December 2016
Authors: Ardeshir Mahdavi, Michal Krajčík, Lucia Kudiváni
However, supplying the personalized air only when the occupant is at the desk, and thus reducing the airflow rate may not imply a reduction of energy consumption because the outdoor air may have a free cooling effect, beneficial in the offices that may be frequently overheated even during the winter period.
The weather file used for the simulations was a TMY2 weather file SK-Bratislava-118160.tm2 from the Meteonorm data base.
However, the overall reduction in the energy demand was only about 20% as less energy was needed for space heating in CAV than in PV.
Thus, the three main factors influencing the energy demand were: a) reduction of the energy for fans due to the lower supply air flow rate; b) reduction of the energy for the heating coil heating up the cooler supply air; c) reduction of the energy needed for space heating when the amount of cooler fresh air supply was decreased.
Online since: March 2023
Authors: Lyubov Yablon, Ivan Budzulyak, Olha Popovych, Mariia Khemii, Roman Ilnytskyi
During discharge (reduction) protons diffuse from the active material / electrolyte interface into the NiOOH structure with simultaneous displacement of OH- ions into the electrolyte solution [12].
The presence of two cathodic current maxima is presumably due to the reduction of two nickel oxyhydroxide phases.
The discharge of γ-NiOOH involves a two-step reaction: the reduction of γ-NiOOH to α-Ni(OH)2 and the subsequent aging of α-Ni(OH)2 to form β-Ni(OH)2 [16].
Simultaneously, the reduction of β-NiOOH to β-Ni(OH)2 occurs.
The values of the specific capacitances of the nickel molybdate hydrate modified by ultrasound for 60 minutes are higher or comparable to the data available in the literature: 679 F/g at a current density of 1 mA/cm2 [13], 142 F/g at a scan rate 5mV/s [20] and in [21], an electrode based on NiMoO4 hydrate at a discharge current of 0.5 A/g reaches a specific capacitance of 682 F/g.
Online since: December 2012
Authors: Yuan Bo Qin, Dong Xin Lu
Second, preprocessing--we preprocess obtained data, check data integrity and data consistency, deal with noisy data, complete missing data by statistical methods and form database.
Forth, data mining--adopting different KDD algorithm to mine data according to the aim of what kind of data to find.
Fifth, interpretation/evaluation--evaluating data and deciding whether to deposit data into the database or not.
However, there no standardization but for data formats and for data interchange.
" [4] "Data Mining Curriculum".
Online since: September 2011
Authors: C. Sanjeeviraja, B. Anuradha
The chemical reduction can be without a catalyst, as in silver coating on glass using a reducing agent for silver nitrate, or with a catalyst, as in the case of reduction of NiCl2, by sodium hypophosphite, the metal being deposited on nickel itself.
Fig. 3: XRD patern of MgIn2O4 thin films at 1500C This result is in good agreement with the literature data (JCPDS data)]ientation. rred olycrystalline in nature and ()s [2,3] n - type f H.
At x ≤ 0.46, we observed 002, 004 and 101 peaks indexed from the crystallographic data of the hexagonal structure of ZnO.
At x= 0.58, we observed 002 and 200 peaks indexed from the crystallographic data of the structure of ZnO and MgO, respectively.
At x ≥ 0.62, we observed 200 and 220 peaks indexed from the crystallographic data of the cubic structure of MgO.
Online since: July 2017
Authors: S.N. Grigoriev, Igor N. Bobrovskij, N.M. Bobrovskij, Abdumalik Rakhimovich Seitkulov, Aleksey A. Lukyanov
The test results were measured on profilograph and were obtained the following data: the width of the grooves wear was 936 microns with burnishing and 1152 microns with polishing, depth was 2.16 and 4.94 microns respectively.
The test results were measured on profilograph mod. 252 and were obtained the following data: the width of the grooves wear was 936 microns with burnishing and 1152 microns with polishing, depth was 2.16 and 4.94 microns respectively.
The vertical position of the shaft contributes to wear of the shaft connected with the fact that the sealing area gather the wear product generated during operation of gears and bearings in the reduction gearbox, gearbox and spindle heads.
Unfortunately, due to the confidentiality agreement it is impossible to bring the absolute values, but the relative value of these defects: front - 42%, rear - 58% (the given data based on the defects statistics for a 5 year period, due to the technological modernization of production lines it is inappropriate to carry out the analysis on the basis of 10 years of statistics).
Online since: February 2013
Authors: Toru Fujii, Masahiro Itani, Kazuya Okubo
Even when the data of regenerated energy by two motors was compared with that through gears (ig=1.0), 35.4% of improvement was obtained at the condition where the maximum improvement was obtained by two.
Nmm(t), Nsm(t), K, ifg, ic(t) denote the number of revolutions of SM and MM, the back electromotive force coefficient, the final reduction gear ratio and speed ratio of CVT, respectively.
Even when the data of regenerated energy by two motors was compared with that through gears (ig=1.0), 35.4% of improvement was obtained at the condition where the maximum improvement was obtained by two motors as shown in the figure.
Even when the data of regenerated energy by two motors was compared with that through gears (ig=1.0), 35.4% of improvement was obtained at the condition where the maximum improvement was obtained by two motors as shown in the figure. 5.
Online since: February 2013
Authors: Víctor Elizondo, Juan C. Briceño, Carlos M. Travieso, Jesús B. Alonso
The steps involved in this preprocessing stage include: Background Subtraction, Binarization Process and Noise Reduction.
The binarization process consists in trans-forming due to an appropriate threshold, a gray scale or color image into a binary one, allowing reducing the volume of data that should be processed.
Noise Reduction.
The last step in the preprocessing stage would be the noise reduction step, in order to eliminate all undesired objects in the frame image as shown in Fig. 2a.
There are cases where the noise reduction step is not needed, for example in the binarization process of Fig. 1c; the process outputs a really nice binary image without much noise.
Online since: April 2024
Authors: Guney Guven Yapici, Burak Bahat
These enhancements can be attributed to the reduction in grain size achieved through the MDF process [3,4].
The data from the physical experiments were used to set up a computer simulation using the finite element method. 3D shape and a simple material model were added to the computer simulation to mimic the physical experiment.
The authors found that the stress-strain (S-S) curve increases as the specimen reduction in terms of thickness while subjected to identical applied pressure.
Following MDF, the reduction in the percent elongation at break value shall also be noted (Figure 4).
It can be disclosed that 3 cycles MDF processing demonstrated a favorable impact on the yield strength, hardness, and fracture strain values of the alloy, while inducing a reduction in the tensile strength of the material.
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