Materials Literature
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Abstract The results of energy absorbing analysis of VP159 austenitic steel and LH556 cast alloy were presented in this article. The assessment was carried out on the basis of drop-weight tower perforation test at impact energy equal to 500J and striker velocity equal to 12,5 m/s. Moreover, the basic mechanical proper…
The effective viscous inertia properties exhibited by suspensions in the presence of oscillatory wave processes are considered. A cell model of a concentrated suspension is used to derive the dependence for the complex density, whose real and imaginary parts characterize the effective inertia and the bulk viscous resi…
Lightning produces extremely high voltages that generated induce overvoltage which have a high tendency to effect the electrical apparatus especially renewable energy plant that directly expose to this source. This study was performed through experimental work by investigating the effect of induce overvoltage upon the…
By single crystal X-ray diffraction the crystal structure of the complex salt [Co(NH 3 ) 5 Cl] 2 (W 10 O 32 )·4H 2 O is determined and the IR spectrum is interpreted. The crystal chemical analysis of the structure of complex cations and decatungstate anions and their packing in the structure is performed.
It is shown that if one takes into account the eective mass of the electron, which in real structures is actually dierent than the free electron mass, the electron and positron self-energy eects may result in atter and smaller enhancement of the electronpositron momentum distribution. Thus, the many-body eects mention…
Carbon nanofillers/polymer nanocomposites foam with electrical conductivity was a novel functional material. In this study, the CNTs/PMMA nanocomposites were prepared by the combination of ultrasonic dispersion and anti-solvent precipitation method. Then supercritical foaming method was untilized applied to prepare th…
Polycrystalline samples of lysozyme were prepared with and without a Langmuir-Blodgett (LB) thin film template via both the hanging drop method and batch crystallisation. Powder diffraction methods are used to compare these samples and to measure their resistance to radiation damage at room temperature. The X-ray indu…
The electronic appliance is capable of emitting electromagnetic waves that will cause the damage of electrical equipment and influence peoples health. In this study, stain steel filament (SS filament) and 75D PET filament were used to manufacture SS/PET composite yarn The SS/PET composite yarn were made by the wrappin…
A common approach for predicting member response under blast loading is through the use of a finite element software package. Such an analysis typically requires the implementation of a three dimensional mesh and, therefore, requires significant computational effort. In this paper, it is shown how a displacement based…
The method of electrochemical impedance is used to study the behavior of titanium with a layer of oxide with smooth and nanotube structures obtained by anodizing in sulfuric-acid solutions. It is shown that the controlling process of formation of both nanotube and usual oxide at high potentials is mass transport in a…
Barium strontium titanate glass-ceramics with different La2O3 concentrations have been prepared by a melting-annealing technique. The effect of La2O3 concentration on phase evolution, microstructure and electrical properties of (Ba,Sr)TiO3-Al2O3-SiO2 glass-ceramics has been investigated. The X-ray diffraction results…
Abstract This paper presents the results of research on the phytoseston of the Vistula River along a distance of 163 km. The research was conducted between 1994 and 2010. A total of 218 diatom taxa were identified in the phytoseston. A large number of diatoms were represented by only a few specimens, and, in some case…
Compósitos polímero/cerâmica à base de poli (fluoreto de vinilideno), PVDF, e cerâmicas ferroelétricas de titanato zirconato de chumbo modificado com lantânio, PLZT, foram sintetizados a partir da dispersão de partículas de cerâmica na solução polimérica. A temperatura de secagem dos materiais, para a evaporação dos s…
The paper addresses the catalytic activity of oxygen-containing Cu-Co-Fe catalysts applied onto carbon nanotubes in the CO oxidation reaction. The carbon nanotubes were synthesized on an Fe 2 O 3 catalyst. The activity of oxide-containing Cu-Co-Fe catalysts is shown to depend on the treatment of metal-carbon precursor…
Ionizing radiation directly causes serious damage to human health, and a protective system capable of absorbing or reflecting ionizing radiation is required urgently. In this work, electrospun poly (vinyl alcohol) (PVA) and Poly (vinyl Alcohol)/Erbium Oxide (PVA/Er2O3) nanocomposite fibrous mats were fabricated. These…
Summary Different mesoporous SiO2 structures were synthesized by a novel process in which poly(N‐isopropyl acrylamide)‐co‐polystyrene (PNIPAM‐co‐PS) copolymer particles with 10 and 35 wt% styrene, respectively, acted as templates. The copolymer particles were prepared by direct miniemulsion polymerization and subseque…
A modification for the embedded-atom method is proposed to calculate the vacancy migration energy in fcc metals, and this modification is based on a bimodal electron density distribution in a crystal. This modified method makes it possible to use the Coulomb potential with only one adjustable parameter, namely, the ef…
Over the past years, synthesis of pyrrole-imidazole (Py-Im) polyamides has been achieved by solution-phase and solid-phase methods. Comparing with solution-phase synthesis, the solid-phase synthesis has showed great superiority in various aspects. The solid-phase synthesis is a rapid, effective, energy-saving and envi…
A novel composite of poly (ethylene glycol) (PEG) functionalized gold nanoparticles (AuNP-PEG) dispersed within Poly (lactic-go-glycolic) (PLGA) films, were prepared to demonstrate the concept of a combined targeted and sustained implant material. This technology offers the promise of improved therapies for difficult…
Numerical experiments are used to examine how the molecular mass and polydispersity index of polystyrene synthesized by controlled addition-fragmentation radical polymerization depend on various control parameters of the process, such as the temperature and initial concentrations of monomer, initiator, and reversible…