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Online since: September 2017
Authors: Ľuboslav Straka, Slavomíra Hašová, František Špalek
The total number of electrodes was eight.
Table 2 Physical properties of the graphite with designation EX – 60[7] Density [g.cm-3] Hardness [Shore] Specific Resistance [Ω.m.10-6] Tensile Strength [MPa] Compressive strength [MPa] Typical Grain Size [μm] 1.8 62 13 80 140 10 Properties of copper electrodes.
Table 3 Chemical composition and basic physical properties of copper electrodes with designation EN Cu-ETP (DIN E-Cu 58) [9] Chemical Composition Physical Properties Cu [%] O [%] Pb [%] Density [g.cm3 ] Hardness (Vickers) [HV] Specific Resistance [μΩ.cm] Typical Grain Size [G] min. 99.95 Max. 0.04 Max. 0.05 8.94 40 -70 1678 10 The Experimental Conditions Evaluation method.
Online since: December 2023
Authors: Andrey N. Dmitriev, Galina Yu. Vitkina, Elena A. Vyaznikova, Roman V. Alektorov
The number of silicate bonds in the sinter is determined by its basicity (CaO/SiO2 ratio or (CaO+MgO)/(SiO2+Al2O3)).
In accordance with the Russian State Standard 25732-88, the measurement of specific or true density was carried out by weighing the sample in a pycnometer without liquid and with a known liquid (ethanol), and then calculating the ratio between the mass of the solid and its occupied volume, without considering the volume of pores inside the grains and the volume of voids between them.
Bulk density was measured by weighing in air and water, and then calculating the ratio of the mass of the sample to its occupied volume, including the volume of the pores inside the grains.
Online since: January 2010
Authors: Masahiko Demura, Toshiyuki Hirano, Dang Moon Wee, Y. Xu, Hye Youn Lee
It should be noted that the γ matrix was homogeneously etched, although the foil consisted of the recrystallized grains with the various crystallographic orientations [9]; for example, one of the grains is shown by the dotted lines in Fig. 1(a).
The surface morphology was changed with the etching time: a number of the exposed γ´ particles increased; and the roughening occurred on the surfaces of the γ´ particles with a fine dimple structure.
Online since: May 2011
Authors: Hua Wen, Cheng Gong, Qi Jun Hu
The electro-osmosis can remove the free water and part weakly bound water in the soil, especially for fine-grained soil with low permeability it is a very effective method of dehydration.
Table 1 testing program of reducing water content in the over-wet soil number Test methods test parameters Test time remarks 1 electro-osmosis volts d.c.36V With no water coming out 2 vacuum preloading Upper vacuum; Lashing velocity: 2L/S; limiting vacuum:0.06Pa With no water coming out 2X-2 type of sliding-vane rotary vacuum pump (motor power: 0.55kW) Table 2 Physical index test results of the over-wet soil in Ya’an areas Density [g/cm3] specific gravity Water content [%] void ratio saturation dry density [g/cm3] 1.843 2.71 40.67 1.07 0.99 1.310 Table 3 Particle analysis results of the over-wet soil in Ya’an areas Size[mm] >60 2~60 0.075~2 0.075~0.002 <0.002 Mass percentage after screening [%] 0 0 8.6 33.6 57.8 Mass percentage of grain less the size [%] 100 100 91.4 57.8 — Test devices and methods The test of reducing water content of the over-wet soil by electro-osmosis.
Online since: May 2016
Authors: Zuhailawati Hussain, Baba Gowon, Shamsul Baharin Jamaludin, Polycarp Evarastics, Kahtan S. Mohammed, Harith Mohd Shobi
The additives either segregate at the W-W grain boundary to form intermetallic phases there or dissolved in the matrix to provide short-circuit diffusion path [1].
The activation effects of Fe is minimal because grain growth were effectively inhibited due to the presence of pores [24].
The number of W-W contacts is equally the highest.
Online since: August 2018
Authors: Fang Wang, Ai Xia Chen, Da Ming Du, Rui Hua Wang, Yin Yan Ju, Jie Guang Song, Ming Han Xu, Lin Chen
Based on the differences of aluminum metal in the alumina matrix, interfacial bonding between the cermet and the aluminum metal based on the alumina ceramic has four types, such as grain boundary, intergranular, intracrystalline intergranular mixed, and interfacial reaction.
So far, a number of different processes have been developed for the preparation of Al2O3/metal multiphase materials.
Furthermore, as the pressure increased, the preferred orientation of the grain also increased, and this increase resulted in serious local defects that cannot be densified.
Online since: August 2016
Authors: Rosari Saleh, Hesni Shabrany, Hendry Tju, Ardiansyah Taufik
Recently, a number of methods have been developed to remove organic pollutant from wastewater.
Lattice constant and grain size of ZnO/CuO/NGP composites with various NGP weight percent.
Sample Lattice Constant (Å) Grain Size (nm) ZnO CuO NGP a=b c a b c a=b=c ZnO CuO NGP ZnO/0.1CuO/5 wt% NGP 3.25 5.21 4.60 3.44 5.29 3.55 20 12 23 ZnO/0.1CuO/10 wt% NGP 3.25 5.21 4.69 3.42 5.13 3.61 20 12 24 ZnO/0.1CuO/15 wt% NGP 3.25 5.21 4.60 3.44 5.29 3.61 20 12 25 The degradation of methylene blue as a function of time under irradiation of visible light and of ultrasound separately is plotted in the inset of Fig.1.
Online since: June 2025
Authors: Daniel Kottfer, Patrik Klučiar
Subsequently, the functional surfaces were ground and then gradually polished using diamond paste with grain sizes of 15 µm, 9 µm and 3 µm.
Finally, the samples were polished using diamond paste with a grain size of 1 µm.
The maximum loading force was 104 µN, the number of injections in the same place was 10.
Online since: November 2017
Authors: Renate Gildenhaar, Georg Berger, Barbara Peleska, Jens Günster, Alireza Houshmand, Doaa Adel-Khattab, Fabian Peters, C. Knabe, Tom Knauf, Wolf Dietrich Hübner, Alexander Rack, Michael Stiller
The Freiburg Ethics Commission International approved the study (study code ZD-MA-MS-2013-1, reference number 013/1294).
Test materials were: first, granules with a crystalline phase Ca2KNa(PO4)2 and with a small amorphous portion containing sodium magnesium silicate (Si-CAOP) (porosity 75%, grain size 1000 to 2000 µm; Osseolive™, Curasan AG, Germany) [6].
Second, β-TCP granules (porosity 65%, grain size 700 to 1400 µm, Ceros™; Mathys Inc., Switzerland) [3].
Online since: January 2013
Authors: Hong Chao Kou, Ruo Lin Li, Xiang Hong Liu, Ting Li Lu, Q. Li, Lian Zhou, Guang Sheng Xu
The cell numbers were equal in each well (5 × 104/ml) at the beginning of each experiment.
However, upon incubation of the cells with some of the discs their numbers sig-nificantly changed in time and this is reflected by changes in numbers of adhering cells as macrophages must adhere in order to survive in in vitro conditions.
As can be seen from the photos that hydroxyapatite distribution is more dispersive, where some of the original surface slices grain is visible, and some distribution is obvious on the porous titanium surface without precalcified.
The number of cells on all specimen are less than that of standard sample (Control) cell number, no matter the surface modified or not.
Cell numbers cultivated 7 days are obviously higher than that of the cell number cultivated 3 days.
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