Materials Literature
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In the paper methods of thermoluminescence (TSL) and time-resolved spectroscopy were used for investigation of shallow electron traps near edge of 4f⁰ band in CeO₂ and nonstoichiometric CeO₂₋x nanocrystals. It was shown that presence of the electronic traps located about 0.2 eV lower than the bottom of 4f⁰ band leads…
Polycarboxylic acid anti-crease finishing agent is used to finish silk. The optimal finishing process was selected through orthogonal experiment. The optimal process conditions were as follows. The optimal concentration of both finishing agent Y and magnesium chloride was 100g/L. The optimal baking temperature and bak…
Homo-crystallization and melting behavior of poly(L-lactic acid) (PLLA) with poly(D-lactic acid) (PDLA) (≤10 wt.%) was studied. The different thermal history had been applied to exert structural variation on stereocomplex (SC). The PLLA/PDLA blend showed different crystallization and melting behavior when cooled from…
Saint-Gobain has developed a unique all ceramic SOFC stack with performance characteristics that make it an attractive solution to the cost and durability challenges of commercializing conventional SOFCs. Saint-Gobain’s all ceramic stacks achieve power density higher than 200 mW/cm2 when operating at 800 °C and 0.75 V…
Abstract It is shown that at unprecedented (high) temperatures an extremely slow long lasting shear treatment, which requires almost an hour for its unwinding, can produce a highly oriented structure in the melt of a crystallizing polypropylene. It seems that a convection process, which is characteristic for shear flo…
In this study, cellulose acetate fibers (CA) were prepared by the technique of electrospinning. A new ternary solvent mixture consisting of acetone / dichloromethane (DCM)/N,N-dimethylformamide (DMF) at the ratio of 2/1/1 (v/v/v) was used in the electrospinning process. The suggested composition of solvents ensured co…
In the present work, effect of von Karman geometric nonlinearity on the vibration characteristics of a Y-shaped single walled carbon nanotube (Y-SWCNT) conveying viscose fluid is investigated based on Euler Bernoulli beam (EBB) model. The Y-SWCNT is also subjected to a longitudinal magnetic field which produces Lorent…
The crystal structures, magnetic and dielectric properties for the ordered double perovskites LnPbNiSbO6 (Ln = La, Pr) have been investigated. Rietveld refinements of x-ray diffraction data have been indexed for the monoclinic symmetry in space group P21/n (No. 14) and a highly rock-salt ordered arrangement of NiO6 an…
Abstract Brominated tert octyl phenol formaldehyde resin (PR) is an important cross linker for chlorinated butyl rubber (CIIR). There are two competitive reactions in the vulcanization process of CIIR, the cross-linking reaction and the self-poly-condensation reaction of PR. The cross-linking density was measured by t…
The doping effect of (Na0.5K0.5)NbO3 (NKN) as alternatives for rare-earth elements on the electrical properties of BaTiO3 has been investigated, in terms of their substitution behavior. The dielectric constant of a specimen with x = 0.05 was about 79% higher than that of pure BaTiO3, and the temperature coefficient of…
The simultaneous suppression of sidelobes and the sharpening of the central peak in the process of diffraction pattern detection based on asymmetric apodization have been investigated. Asymmetric apodization is applied to a semicircular array of two-dimensional (2D) aperture functions, which is a series of 'coded-phas…
A study for electrocatalytic hydrogenation of oxalic acid has been reported using the self-organized TiO 2 nanotube electrode prepared by anodic oxidation method. The prepared electrode was characterized by SEM and XPS. The electrocatalytic activity of the TiO 2 nanotube electrode was evaluated by CV and galvanostatic…
The tetragonal-phase BaTiO3 as the high dielectric (HK) layer and the magnetic FePt film as the metal gate (MG) are proposed to be the gate stack scheme on the Ge (100) substrate. The ∼75% dielectric constant (κ-value) improvement, ∼100X gate leakage (Jg) reduction, and the promising Jg-equivalent-oxide-thickness (EOT…
In this study, the effects of different washing types on the selected denim fabric’s strength and elongation were researched. For this aim, 3 different washing processes (rinse, enzyme and enzymatic stone washing) were determined. Fabric strength and elongation values were mesured before and after washing. The test re…
The purpose of this work is to provide an overview of the current state of the art and recent developments in the applicability of composite materials in civil and structural engineering. The book contains a collection of research articles written by national and international experts, that addresses current and futur…
Samples of cadmium selenide colloidal quantum dots (CQDs) prepared in water and organic media were studied. The possibility to control luminescence peak position through technological parameters variation during synthesis process was shown and different luminescence mechanisms in CQDs were demonstrated. Cadmium seleni…
An improved toughness-stiffness balance was achieved in PBT matrix by adding poly(n-butyl acrylate)/poly(methyl methacrylate-co-glycidyl methacrylate) (PBMG) core-shell structured copolymer. A series of poly(n-butyl acrylate)/poly(methyl methacrylate-co-glycidyl methacrylate) (PBMG), core-shell structured modifiers wi…
Lead zirconatetitanate Pb(Zr0.52Ti0.48)O3, (PZT) from a mixture of commercial PbO, TiO2 and ZrO2 powders was successfully prepared using a planetary ball mill. The microstructure and electrical properties of PZT ceramic were found to be highly sensitive to the sintering condition. The influence of microstructure and e…
ОСОБЕННОСТИ ДЕФОРМИРОВАНИЯ И РАЗРУШЕНИЯ КОМБИНИРОВАННЫХ ПОЛИМЕРНЫХ ТРУБ ПРИ НИЗКИХ ТЕМПЕРАТУРАХДвухслойные комбинированные конструкции в которых один слой, обладающий высокой прочностью и жестокостью, из металла, армированного композита или высокопрочного пластика является несущим, а другой из высокодеформативного пол…
We report on a simple and effective method of synthesizing graphene‐like nanosheets on silicon substrates pre‐deposited with a carbon film or carbon nanodots in hot‐filament(HF)CVD from a methane precursor. The results of field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and…