Materials Literature
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Composite materials based on fiber-reinforced polymers are becoming preferred materials for aircraft and spacecraft construction. Their use as structural materials in recent years has proved their advantages. This paper offers an overview of several applications in aeronautics, but it focuses on composites application…
Adsorption of Gnetum africana leaves extract and corrosion inhibition of carbon steel in hydrochloric acid solutions have been investigated using gravimetric technique. Inhib ition efficiency increased with extract concentration and time of exposure. The effect of temperature on the corrosion behavior of mild steel in…
We study the Blume-Capel model on the square lattice. To allow for wetting and interfacial adsorption, the spins on opposite boundaries are fixed in two different states, "+1" and "-1", with reduced couplings at one of the boundaries. Using mainly Monte Carlo techniques, of Metropolis and Wang-Landau type, phase diagr…
Considered diffractive optical elements that form a complex vortex beams for rotating micromechanical elements. Presented experiment of the formation of the beams and experiment by the rotation of agglomerations of polystyrene microparticles in complex vortex beams.
The inherent properties of silica, such as optical transparency, high biocompatibility, chemical and colloidal stability, controllable porosity, and easy surface modification, provide silica materials with a tremendous potential in biomedicine. Therefore, the coating of Au nanoparticles with silica largely contributes…
In recent years, increasingly higher strength grades of steel have been used to meet the increasingly demanding requirements placed on rockbolts in underground coal mines. An unfortunate consequence of this has been the occurrence of premature failure of the rockbolts due to stress corrosion cracking. Stress corrosion…
Impregnation is a cost-effective and scalable method for the non-covalent addition of different compounds on the surface of suitable substrates. For supercapacitors, it provides an alternative strategy for attaining higher energy densities by combining high surface area carbon electrodes with surface species adding a…
There is great interest in the oxygen reduction reaction (ORR) in basic solution due to the development of alkaline fuel cell and metal air battery. Pt is a kind of highly active catalyst for ORR to go through 4e pathway. However, the price of Pt is expensive, and the annual production is only 181.6 tons, which is far…
In this paper, we present a new model developed in order to analyze phenomena which arise in the solidification of binary mixtures using phase-field method, which incorporates the convection effects and the action of magnetic field. The model consists of flow, concentration, phase field and energy systems which are no…
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Proteins are constituted of amino acids that are linked with each other in a defined sequence and through peptide bonds to form polypeptide chains, containing up to hundreds of amino acids. Proteins are typically present in emulsions and foams, and they show an edible interfacial complex. The major challenges for food…
Crystal chemical data for more than 100 compounds with “glaserite” type structure are summarized and evaluated. A revised general formula for “glaserite” type compounds (GTC) is deduced – X(□;1)Y(□;2)[M(TO4)2]. It gives information for two important structural characteristics of GTC. The first one is that main structu…
Detailed textural and clay mineralogical study of Gosthani estuary (lat. 17° 53’- 17°56’ N: long. 83° 26’- 83° 28’ E) has been carried out. The textural studies clearly establish that the sediments are of medium grain size, moderately sorted, positively skewed and deposited under moderate to low energy conditions with…
Fruits and vegetables are living tissues subjected to quality changes after harvesting. The loss of strawberries can reach 40% during storage. In order to investigate the effects of postharvest application of nanocomposite packaging on shelf life and quality characteristics of strawberry fruit, a factorial experiment…
Liposomes are spherical shaped lipoidal vesicles which are under extensive investigation as drug carriers for improving the bioavailability and delivery of therapeutic agents. Due to innovative developments in liposome technology, numerous liposome based drug delivery systems are currently in clinical trial, and recen…
Polymer-nanosilica composite was prepared using Silica nano particles as reinforcing fillers in Acrylonitrile Butadiene Rubber (NBR). The rheological behavior of the polymer nano composite was studied using Rubber Process Analyzer [RPA-2000, USA]. The dispersion of the silica nano particles based filler in the Nitrile…
The aim of this work was to determine the influence of the fatigue bending of textile packag es consisting of aluminised basalt woven fabrics, textile inserts and linings on their structural and thermal insulation properties. For the process of bending, an STM 601/12 device of the SATRA company was used. Three kinds o…
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Magnesium is actively investigated for biodegradable implant materials because of nontoxicity and similar mechanical properties of bone. The problem of biodegradable magnesium implant is its high corrosion rate in vivo. Magnesium might be corroded and lost mechanical integrity before new bone is regenerated. The corro…
In this paper, we present the new results of biosensor that is made from the surface–modified quantum dots with acetylcholinesterase enzymes (AChE) for optical detection of the pesticides. The quantum dots (QDs) mentioned in this study are CdTe, CdSe/ZnS and CdSe/ZnSe/ZnS - the thick shell QDs are totally new. The res…