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Online since: May 2019
Authors: Gennadiy Pivnyak, Michał Potempa, Natalia Dreshpak, Stanislav Vypanasenko, Leonid Meshcheryakov, Liudmyla Zaika
Let’s introduce the variable K (K = 0, 1, 2… Kh), corresponding to the number of the pitch of the grid in time.
Here Kh – is the total number of pitches.
The step of the calculation process h should be chosen in such a way so that the zone of the flow of the electric current in the metallic cover δ or ξ was equal to the integral whole number of the values h.
New principles of grain thermal treatment.
Online since: August 2017
Authors: Thomas Wischgoll, Jörg Hartig, Hans Hagen, Christina Gillmann, Tobias Post, Benjamin Kirsch, Bernd Hamann, Jan Christian Aurich
Indexable Insert cemented carbide · grain size: superfine (0.2 - 0.9 µm) · 89.7 % tungsten carbide / 9.6 % cobalt / rest chrome shape: DNMA 15 04 16 corner radius rϵ: 1.6 mm tool included angle ϵ: 55° wedge angle β: 90 cutting edge geometry: · tool 1: sharp cutting edge · tool 2: form-factor K ≈ 1 / cutting edge radius rβ ≈ 25 µm · tool 3: form-factor K ≈ 1 / cutting edge radius rβ ≈ 55 µm · tool 4: form-factor K ≈ 0,5 / cutting edge radius rβ ≈ 25 µm Coating AlTiN (approx. 2 µm) Cutting process cooling lubricant: dry cutting speed: vc = 160 m/min feed: f = 0.2 mm/U depth of cut: ap = 2 mm tool cutting edge angle: κ = 93° tool orthogonal rake angle: γ = -6° tool cutting edge inclination: λ = -6° the wear state of the tool (Fig. 2).
The visualization itself is easy to understand as the available image series are ordered as a twodimensional matrix (x-Axis: time of use, y-Axis: tool number).
The visualization is not restricted to a specific number of time-steps or amount of cutting tools considered.
Of course, the complexity of the visualization raises with the number of input images used in the comparison.
Online since: August 2024
Authors: Yuliya Danchenko, Vladimir Andronov, Halina Olijnyk, Oleksandr Mirus, Valentina Evtushenko
To a certain extent, this leads to some undesirable technological features of the use of these materials: a high rate of hardening, a rapid increase in viscosity during the hardening process and, as a result, the formation of a large number of residual stresses, which in turn negatively affects the properties of the finished material.
Another explanation for this phenomenon is that when the number of acid molecules increases, the number of dissociated molecules decreases and, accordingly, the concentration of the most active hydrogen ions (protons) decreases, which are obviously absorbed into the body of polymer concrete, disrupt the structure and cause a decrease in the strength of the material.
Kapustin, Influence of Plasticizers on the Properties of Fine-Grained Polymer Concrete.
Online since: May 2008
Authors: Peter Müllner, G. Kostorz
This is somewhat in contrast to conventional wisdom which states that interface mobility is high for high-energy boundaries and low for low-energy grain boundaries (since twin boundaries have exceptionally low energy).
The incidence of shuffle increases with increasing number of atoms per primitive unit cell.
With increasing stress, an increasing number of disconnections line up in the interface and form a nascent disconnection wall (Fig. 4b).
There are a number of options how the disclinations may react.
(b) With ongoing transformation, the number of martensite plates increases and the dipoles move such as to extend the size of the plates.
Online since: December 2013
Authors: Hardev Singh Virk, K.V.R. Murthy
In this way, the huge number of actual vibrational modes of the lattice can be approximated by a small number or a combination of specific normal coordinates.
The outer orbitals overlap and split into a number of sub-levels, all with slightly differing energies.
In order to carry out OSL dating, mineral grains have to be extracted from the sample.
Most commonly these are so-called coarse grains - 100-200 μm, or fine grains - 4-11 μm.
Usually only a portion of these vibrational eigenstates are represented due to the massive number of possible vibrations in a molecule.  
Online since: December 2014
Authors: Fabiano André Trein, Alexandre Silva Vargas, Marco Antônio Siqueira Rodrigues, João Paulo Castro Gomes
A B Figure 1: A) Polyurethane (PU) synthetic laminate and B) EVA waste After collection, the waste was comminuted separately in a knife mill, equipped with a 6 mm mesh sieve, with the aim of homogenizing the grain size.
An excess of “cotton” shaped material, characterized as EVA waste, can be seen in Figure 3(a), alongside a small number of filaments, characterized as PU waste, which are fully anchored in the EVA matrix.
In Figure 3(b), note the greater balance between the number of filaments (PU) and the EVA matrix.
As discussed above, the synthetic PU laminate consists of 10% polyurethane and 90% polyester fibers, which gives rise to the increased number of filaments between figures “a” and “c” [21].
Online since: June 2011
Authors: Mujuni Katunzi Tumaini, Qin Zheng
Recent growth is based on a number of factors including the decrease in costs of underlying technological requirements like software, the early reports of benefits and the industry-wide learning of best practices, and the greater probability of having to compete against rivals enjoying the advantages of SCM [2].
Although a considerable amount is known about the poor record of SME progress in the developing world, this knowledge continues to be imperfect and a large number of questions remain unanswered, implying that there is no clear identification of the most pertinent explanations to the essence of SME predicament.
The study involved respondents from agricultural small and medium-sized firms, namely; food and beverages, grain milling, brewing, dairy, drinking water, oil processing and baking.
Venturing, integration and outsourcing from other enterprises or institutions are conducted by only a marginal number of respondents.
Online since: December 2023
Authors: Ki Woo Nam, Gum Hwa Lee, Jong Kyu Park
Therefore, because the crack number to be detected is small, the reliability of maintenance is ensured, and there is an advantage of reducing NDI time and the number of repair portions.
This improves the reliability of NDI and reduces the number of repair portions. 5) If surface modification of the NDI-detected crack has not been conducted after repair, high-resolution NDI1 with a high crack-detection probability must be performed to ensure safety. 6) The main factor contributing to improving the fatigue strength and rendering surface cracks harmless is the compressive residual stress induced by the application of IH.
Kitsunai, Effect of microstructure on fatigue crack growth mechanisms in high strength steel (Relationship between crack growth rate and prior austenite grain size), The Society of Materials Science of Japan, 29 (1980) 795–800
Online since: October 2006
Authors: Shigeki Sakai
Considerable numbers of ferroelectric and insulator combinations were tested.
Among them, a limited number of papers showed data retention results that are summarized in Table 1.
The Id,on and Id,off were measured at Vkeep= 2.0V after a large number of the endurance pulse cycles were applied to the FET gate electrode.
We find, for x=1.0, crystal grains and their boundaries in the HfO2 insulating layer, and rougher interface between the insulating and Pt layers (Fig. 11(a)).
Online since: June 2018
Authors: Georgios V. Seretis, Aikaterini K. Polyzou, Christopher G. Provatidis, Dimitrios E. Manolakos
Same number of specimens for each stainless steel flakes content underwent tensile tests.
Only DP-Spray by Struers (diamond product containing exclusively polycrystalline diamonds) of 1 μm grain size was used for polishing, in order to avoid any possible effect of an alumina solution on the EDS results.
Here, considerably lower number of pores, of the same size as previously, can be observed as well as groups of steel flakes of high directivity towards solidification kernels, see Fig.5.
· In the case of 0.5 wt% stainless steel flakes addition, considerably lower number of pores, of the same size as previously, can be observed.
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