Materials Literature
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Summary Nanoporous thermostable polycyanurate (PCN) films were generated by in‐situ metal complex‐catalyzed polycyclotrimerization of 4,4′‐ethylidenediphenyl dicyanate in the presence of 20–50 wt.% of inert high‐boiling temperature liquids as porogens, i.e. dioctyl, dibutyl or dimethyl phthalates (DOP, DBP or DMP), fo…
We characterized the 6,12-bis{[N-(3,4-dimethylphenyl)-N-(2,4,5-trimethylphenyl)]amino} chrysene (BmPAC), which has been proven to be a blue fluorescent emission with high EL efficiency. The blue fluorescent device exhibits good performance with an external quantum efficiency of 5.8% and current efficiency of 8.9 cd/A,…
Statistical methods was combined with micromechanics. Based on the parallel bar system, the damage law of the concrete materials subjected to uniaxial compressive stress was simulated. Furthermore, the meso-statistical damage constitutive of concrete materials was studied base on the Weibull’s statistical theory of th…
Foams have been generated from aqueous poly(vinyl alcohol) solution by two different methods: dispersion (mechanical) method, i.e., by bubbling a gas through a porous medium into the aqueous poly(vinyl alcohol) solution, and the condensation (chemical) method, i.e., by performing a gas-generating reaction directly in…
A self-powered artificial pacemaker is demonstrated using a high-performance flexible piezoelectric PMN-PT thinfilm energy harvester. As reported by K. J. Lee and co-workers on page 4880, a PMN-PT harvesting device can convert slight mechanical movements to high electric power and provides functional electrical stimul…
This paper presents a microfluidic device enabling culture of vascular smooth muscle cells (VSMCs) where extracellular matrix coating, VSMC seeding, culture, and immunostaining are demonstrated in a tubing-free manner. By optimizing droplet volume differences between inlets and outlets of micro channels, VSMCs were ev…
Carbon nanotubes (CNTs) have been considered for designing antennas, but their losses result in poor radiation efficiency, especially at microwave frequencies. However, their outstanding carrier mobility, large surface area per unit mass and adjustable surface chemistry make them ideal for functions such as reconfigur…
The non-sinusoidal inrush current has high magnitude and hence the discrimination from the other operating conditions such as internal faults becomes difficult in the protection of a power transformer. This paper proposes an effective method based on wavelet transform for the differentiation between inrush current and…
The sintering behaviour of 17Ni/(10NiO–NiFe2O4) cermet not only is influenced by the characteristics and impurities of the raw materials but also is dependent on extra pressure during the fabrication process. Our work was concerned with the effect of sintering pressure on the relative density, mechanical properties an…
We report a voltammetric study of several nitroaromatic compounds such as the drugs: Nifedipine, Nitrendipine, Furnidipine and Nisoldipine in multiwalled carbon nanotubes (MWCNT) modified electrodes.
In tissue engineering and regenerative medicine, the conditions in the immediate vicinity of the cells have a direct effect on cells’ behaviour and subsequently on clinical outcomes. Physical, chemical, and biological control of cell microenvironment are of crucial importance for the ability to direct and control cell…
A theoretical interpretation of the photoluminescence excitation spectra of self-organized polar GaN/(Al,Ga)N quantum dots is presented. A numerical method assuming a realistic shape of the dots and including the built-in electric field effects is developed to calculate their energy structure and hence their optical a…
The pulsed eddy current nondestructive testing signal for ferromagnetic plate thickness testing is sensitive to the plate's thickness and probe lift-off effect simultaneously. This feature leads to the difficulty of eigen-value extraction in thickness quantification. To remove the probe lift-off effect, a method based…
The kinetics of Ce(III) oxidation with ozone in 0.1–3.2 M H2SO4 solutions was studied by spectrophotometry. The reaction follows the first-order rate law with respect to each reactant. The rate constant k slightly increases with an increase in the acid concentration, which is associated with an increase in the O3/O 3…
INTRODUCTION: Pseudomonas luteola is an uncommon opportunistic pathogen. It is recognized as an uncommon cause of infections in underlying medical disorders. Infections caused by this microorganism are health care associated. CASE PRESENTATION: The current study isolated P. luteola from empyema in a patient with tuber…
Organic light emitting diodes (OLEDs) have been the focus of intense study since the late 1980s, when the low voltage organic electroluminescence in small organic molecules such as Alq3, and large organic molecules such as polymers (PPV), was reported. Since that time, research has continued to demonstrate the potenti…
The effect of the solidification gradient (G = 60 and 150°C/cm) at a solidification rate R = 10 mm/min on the structural parameters and the short- and long-term strength characteristics of blade-type single-crystal workpieces made of a heterophase γ′ + γ VKNA-1V-type γ′(Ni3Al)-based alloy with low contents of refracto…
The photovoltaic performance of a hybrid ZnO/P3HT heterojunction was improved by modifying the device surface with the MK-2 dye. This organic dye enhanced the compatibility between the polymer and the metal oxide, increased the exciton separation efficiency, and improved the molecular ordering in the charge transport…
A 3D elastic-plastic finite element method (FEM) model of cold strip rolling for 6-high continuous variable crown (CVC) rolling mill was developed. The rolling force distributions were obtained by the internal iteration processes. The calculated error has been significantly reduced by the developed model. the absolute…
The adhesive strength of adhesive joints between metal surfaces has been improved considerably by modifying an adhesive based on a copolymer of ethylene with montmorillonite vinyl acetate. It as been proved that the static (adhesive joint) and dynamic (frictional interaction) adhesion modes are correlated. It has been…