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Online since: July 2020
Authors: Nafisah Osman, Oskar Hasdinor Hassan, Mohd Affandi Nur Syafkeena
Y-doped barium cerate-zirconate (BCZY) ceramic oxide is proven to be a competent material as an electrolyte with high proton conductivity as well as chemical and mechanical stabilities in CO2 and H2O atmospheres.
Introduction Chemical composition and microstructural parameters of a material are taken as two major factors that will affect the protonic conductivity of polycrystalline solid oxide electrolytes.
Owing the ability to self-organize in solution, surfactant can modify the interfacial property and enhanced the compatibility between particles of different characteristics [5].
Surfactant affects the phase formation of BCZY ceramic powder as well as its morphology.
Wang, Effect of Surfactants on Dispersion Property and Morphology of Nano-Sized Nickel Powders, T Nonferr Metal Soc. 24(11) (2014) 3739–3746
Online since: October 2023
Authors: Gracia M. Bruscas-Bellido, Sergio Benavent-Nácher, Jose V. Abellán-Nebot, Julio Serrano, Pedro Rosado-Castellano
In this sense, during last years the authors have identified many errors in the students’ tests due to the deficient assimilation of basic concepts from previous courses, such as physical concepts (torque, power, energy, etc.) or mathematical concepts (inequalities, use of exponential functions and logarithms, trigonometry, properties of statistical distributions, etc.), among others.
In fact, the authors have realized that many of the errors committed by the students in the manufacturing tests are mainly due to a poor assimilation of basic concepts from previous courses (e.g., physical concepts such as torque, power, energy; mathematical concepts such as inequalities, use of exponential functions and logarithms, trigonometry, properties of statistical distributions, etc.).
In [6], an extensive bibliographical review on this issue is presented, including a meta-analysis of numerous references and concluding that the prior knowledge is an excellent predictor of achievement after learning, but there is no consensus or convergence in the identification of the main factors of this influence.
In this sense, the work presented in [5] identifies some determining factors in prior knowledge to understand its effect on learning.
Another interesting example is presented in [8], focused on the teachers' previous knowledge and their experience, and the influence of these factors on the quality of teaching in the field of biology.
Online since: October 2010
Authors: Xu Hai Zhang, Feng Fang, Shu Yong Tan, Xiang Jun Wu
All these researches aim at improving adhesion property.
On the other hand, CrN films are known to have high hardness, good corrosion resistance, high-temperature oxidation resistance and wear properties, and have become important technological materials in the fields of cutting and forming tools, bearing and machine parts, dies and moulds.
Results present that proper bias-graded process can also optimize other mechanical preperties such as hardness.
Firstly, all of films exhibit CrN with the B1 NaCl structure (JCPDF 76-2494), indicating the bias voltage does not affect the phase constitution whether it is constant or graded.
References [1] S.Zhang and A.Nasar: Nanocomposite Thin Films and Coatings: Processing, Properties and Performance, Imperial college press(2007)
Online since: March 2021
Authors: Abdullah N.H. Hanis, A. Talib Syahirah, Ahmad Azura, Ismail N.I. Najwa
The double layer affects the arrangements of the clay particles , and hence, the physical and mechanical properties of the soil are also affected [6].
The properties of the soil sample are shown in Table 1.
The chemical properties of the waste dust is shown in Table 2.
Cementitious properties of super-fine steel slag.
Effect of mechanical activation on the hydraulic properties of stainless steel slags.
Online since: December 2012
Authors: Nan Ge, Hai Bin Chen, Hua Jing Qu
The results show that the slit in the floor open-angle measures, due to the reinforcement in the slab near the beam end is cut off, the beam end flexural capacity reduced by 19%, the column end bearing capacity is very small, the bearing capacity of the beams side of the gap increases, the does not affect the bearing capacity of the premise to ensure strong column and weak beam seismic requirements.
"Strong column and weak beam of many factors, of which the floor slab reinforced the negative moment of the beam end flexural capacity had a significant effect.
The calculation of floor slabs reinforced stress required reduction calculation, equation (5), (6) and were plate top and the bottom plate of steel stress reduction factor.
Member section size: beam 350mm x 700mm, corner posts, side column 450mm × 450mm, middle column 600mm x 600mm, thickness of plate 180mm, concrete grade C30 , the mechanical properties of the standard value.
Online since: September 2017
Authors: V.P. Popov, A.N. Zaichenko, B.M. Seredin
However, the scattering of the experimental points in the graph indicates possible influence of other factors, unaccounted by (Eq. 2).
This dependence can be explained qualitatively by the improvement in the protective properties of oxide coating formed on the smoother surface and by decrease of resistance of the coating to the aluminum melt with the temperature increase.
Seredin, Patterns with separated p+-regions for semiconductor power devices at currents up to 100 A, Crystallization and properties of crystals.
Poluhin, Analysis of the technological factors of the thermomigration process, Power electronics. 5 (2013) 118-120
Devitsky, Cristal properties of silicon obtained by termomigratio, Newsletter of Nort-Caucasus federal university, 3(54) (2016) 24-30
Online since: August 2021
Authors: Zakhar G. Sakoshev, Aleksey N. Blaznov, Vyacheslav V. Firsov
The exposure of the two factors at a time (tension and environment impact) is more intense than their successive exposure―this event is known as the Rehbinder effect [2].
It was found that the concrete environment adversely affects the durability and strength of polymer composite materials [12-14].
But the nature of failure in the midsection suggests that the specimens were actually affected by chemical ageing.
Yan, Mechanical properties of discrete BFRP needles reinforced seawater sea-sand concrete-filled GFRP tubular stub columns, Construction and Building Materials. 244 (2020) 118330
Zhurkovsky, Geometric and mechanical characterization of ribbed FRP rebars, Polym.
Online since: January 2010
Authors: Arne Lucas, Fritz Thorey, Andrea Meyer-Lindenberg, Nina von der Höh, Dirk Bormann
This was done in at least 15 consecutive steps, so as to minimize the mechanical load of the blank during threading.
In the three-month group, a total of 29% of the limbs (n = 7) were affected.
For conventional implants factors as roughness of the surface or size and condition of hollows or pores play an important role [9].
To what extent this behaviour would affect the limits of using resorbable screws has to be investigated in studies focussing especially on biomechanical properties of degrading screws.
To what extent this influences the maximum tolerated mechanical stress of future screw geometries remains to be tested in further biomechanical investigations.
Online since: May 2015
Authors: Mohamad Firdaus Abdul Wahid, N.R. Nik Roselina, C.M. Mardziah, Koay Mei Hyie
Introduction Calcium phosphate (CaP) ceramics have been widely used as implant material as it exhibits excellent biocompatibility properties with human body [1].
Thus, BCP ceramics were developed to combine the properties of more stable HA and resorbable β-TCP.
These ionic substitutions could disturb morphology and crystallinity structures which in return affect the properties of the calcium phosphate ceramics.
Various studies have been done to improve the properties of CaP [8].
Zinc ions play significant role as bone growth factor in in vitro and in vivo [8, 9].
Online since: November 2012
Authors: Mamoru Aizawa, Nobuyuki Kanzawa, Hidenori Konishi, Tetsuya Inayama
In addition, inositol phosphates are known signal transduction factors in most mammalian cells and play a role in controlling cell function [7].
To utilize the unique properties of IP6-cement, we aim to develop a high performance biomaterial that has anti-tumor activity by controlling the growth arrest action of IP6-cement.
Results and Discussion IP6-HAp cement did not affect the proliferation of MC3T3-E1 cells during long culture periods.
level surface roughness of cement might affect cell proliferation.
Aizawa, Fabrication of chelate-setting hydroxyapatite cements from four kinds of commercially-available powder with various shape and crystallinity and their mechanical property, J.
Showing 21331 to 21340 of 26166 items