Materials Literature
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Tissue engineering is a research field for artificial substitutes to improve or replace biological functions. Scaffolds play a important role in tissue engineering. Scaffold porosity and pore size provide adequate space, nutrient transportation and cell penetration throughout the scaffold structure. Scaffold structure…
Die casting process of Mg alloys for high temperature applications was studied to produce an engine oil pan. The aim of this paper is to evaluate die casting processes of the Aluminium oil pan and in parallel to apply new Mg alloy for die casting the oil pan. Temperature distributions of the die and flow pattern of th…
Diesel particulate filter (DPF) has been developed to optimize engine out emission, especially particulate matter (PM). One of the main important factors for developing the DPF is estimation of soot mass being accumulated inside the DPF. Evaluation of pressure drop over the DPF is a simple way to estimate the accumula…
A series of multinuclear cyclotriphosphazene ligands were synthesized and used as artificial nuclease enzyme model.All of these new compounds were confirmed by MS,1H NMR,31P NMR,13C NMR and IR.Preliminary studies on the cleavage of pUC19 DNA in the presence of metal complexes were performed.The results strongly sugges…
Pure and methylene blue (MB) doped poly(methyl methacrylate) (PMMA) samples were prepared by free radical vinyl polymerization. The effect of methylene blue, which itself is polar in nature, on the glass transition temperature, electric permittivity, and microhardness of the PMMA matrix was studied. It was found that…
We studied pressure effects on YbCu5 and YbInCu4, good examples of the Yb-based compounds to investigate the nonmagnetic-magnetic transition in Yb-based strongly correlated electron systems. With increasing pressure, the low-temperature Fermi liquid state of YbCu5 is gradually suppressed, suggesting the second-order l…
This study focuses on the performance characteristics of polymer electrolyte membrane fuel cell (PEMFC) using the AC impedance technique. The experiment was carried out to investigate the optimal operating conditions of PEMFC such as cell temperature, flow rate, humidified temperature and back-pressure. The fuel cell…
Nowadays, many components in automobile, aircraft, offshore structure and industry require lightness and high strength. However, since developments of advanced materials have limitations, it mainly is applying to method of surface hardening. This study offered research about camshaft that is one among engine important…
Summary. The aim of the paper is to inform that at the Faculty of Electrical Engineering of the Silesian University of Technology in Gliwice the work on the socalled joint electro-acoustic method applied to diagnosis of power transformers has been started. It has been assumed that this method is to consist in simultan…
In a stainless steel autoclave of 15 ml capacity, pure hexagonal aluminum nitride （h-AlN） foam has been synthesized by direct reaction of AlCl3 with NaN3 in non-solvent system at 650 ℃ for 3h. The scanning electron microscopy （SEM） shows that the obtained foam material has characteristic sponge-like morphology. The re…
ABSTRACT ：Bifunctional silane (TESPD) is added into silica filled SBR compound and its effects with respect to the vulcanization properties, the processability, and the physical properties are investigated. The addition of the TESPD intosilica filled SBR compound increases the degree of crosslinking by formation of a…
Abstract In cases of high-level radioactive waste repositories, heat load is apparent by radioactive waste decay. The safety of a waste repository would be influenced by changing circumstances caused by heat transfer through rock. Thus, a ventilation system is necessary to secure the waste repository. The first priori…
Remanufacturing is an industrial manufacturing process. The merits of remanufacturing are to reuse old products to perform like a new product and to save energy, natural resources, landfill space and to reduce air pollution by less re-smelting. This paper proposes a systemic approach for activating the domestic remanu…
ABSTRACT Hydrogen production by the reaction of aluminum alloys and NaOH solution was studied for an automotive proton exchange membrane fuel cell(PEMFC) application. In our experiment conditions(30~75℃, NaOH 0.5~5M), passivation of aluminum was not occurred. Higher rate of hydrogen production was observed at the reac…
This paper presents a per unit aggregation model for representing a group of three-phase induction motor loads connected in the same bus. All parameters of the model are derived based on no load tests and block rotor tests with the development for a generalized aggregation of induction motors with similar and differen…
Abstract Since cerium carbonate becomes porous cerium oxide by releasing carbon dioxide and vapour steam during calcination ofcerium carbonate, nano size cerium oxide can be obtained by milling calcined cerium carbonate. Therefore cerium carbonate[Ce 2 (CO 3 ) 3 ·XH 2 O] is used generally for the preparation of nano s…
The band structures and the magnetic properties of Co 3 V 2 O 8 compound have been calculated by ab initio scalar-relativistic full potential local orbital method within the local spin density approximation.The band calculations were performed for para-, ferro-, and antiferromagnetic Co 3 V 2 O 8 compounds.The main co…
Ga-doped ZnO (GZO) thin films were prepared by pulsed laser deposition (PLD) method on a large substrate at room temperature in vacuum. Two regions of apparently different optical transmittance were found in the deposited area, and their properties such as thickness, sheet resistance, optical and electrical properties…
Investigation of the surface morphology, growth mechanisms and optical properties of CdSe films obtained by the close-spaced vacuum sublimation (CSVS) technique, which are promising for use as the absorption layers of tandem solar cells and photodetectors, was carried out in the present paper. Measurements of the opti…
In this paper two methods for an improved characterization of the geometry of Rockwell diamond indenters are investigated: The establishment of a group standard of indenters and the derivation of an area function with a nano measuring machine. A group standard of indenters yields better statistical results than the ca…