Materials Literature
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Here the authors report a comprehensive study on InAs sub-monolayer quantum dots with different capping layers. After performing systematic optimization of InAs deposition and GaAs thickness, they grew three samples, namely A, B and C, using solid-state molecular beam epitaxy with identical architecture but different…
Three strategies are commonly used to optimize corrosion control: adjusting pH and alkalinity, developing Pb(iv) scale by maintaining free chlorine residuals throughout the distribution system, and applying orthophosphate‐based corrosion inhibitors at appropriate dosages and pH ranges.
The aim of the study was to compare the behavior of seeded cells on synthetic and natural aortic valve scaffolds during a low-flow conditioning period. Polyurethane (group A) and aortic homograft valves (group B) were consecutively seeded with human fibroblasts (FB), and endothelial cells (EC) using a rotating seeding…
Tissue engineering encompasses a multidisciplinary approach gearedtoward the development of biological substitutes designed to restoreand maintain normal function in diseased or injured tissues. Thisarticle reviews the basic technology that is used to generateimplantable tissue-engineered grafts in vitro that will exh…
In oxy/fuel combustion of coal, the pulverised coal is burned with oxygen at concentrations greater than the currently allowed value of 21 %. This may well provide advantages in carbon sequestration against other technologies such as pre- and post-combustion capture. However the risk of dust explosions increases signi…
Abstract A π‐conjugated phenylaza‐15‐crown‐5‐triazol‐substituted coumarin fluoroionophore 1 was synthesized by copper(I)‐catalyzed Huisgen alkyne‐azide 1,3‐dipolar cycloaddition (CuAAC "click" reaction). 1 can display selective fluorescence enhancement toward Fe3+ over Hg2+, Cr3+ and the other metal ions in aqueous so…
The current excitation strategy for harmonic and subharmonic imaging (HI and SHI) uses short sine-bursts. However, alternate pulsing strategies may be useful for enhancing nonlinear emissions from ultrasound contrast agents. The goal of this study was to corroborate the hypothesis that chirp-coded excitation can impro…
Abstract The multitude of chemically reactive species that are involved in plasma polymerization process make difficult to anticipate how the polymer will look like. In order to prepare polymerized films with imposed properties a good control over the plasma polymerization reaction should be done. In this paper, we in…
In this paper, a new multi-conductor transmission line (MTL) method is introduced to analyze the voltage distribution of power transformer windings, including inserted capacitance continuous winding and duplex winding, under lightning overvoltage excitation. This new MTL model may take into account electromagnetic ind…
In this work, the effect of a low-temperature plasma on the zeta potential of cotton fabric was studied. The silver particle absorption on cotton fabric when modified by a low-temperature plasma was also investigated. The modification consisted of plasma pre-functionalization followed by a one-step wet treatment with…
We studied by X-ray diffraction analysis, IR spectroscopy, and scanning electron microscopy (SEM) the phase composition and the structure of coatings based on silicon-containing hydroxyapatite (Si-HA) deposited by RF-magnetron sputtering. The sputtering target contained two phases (apatite and tricalcium phosphate) an…
The physical, chemical, and biological properties of nanostructures depend strongly on their geometrical dimensions. Here we present a fast, noninvasive, simple-to-perform, purely optical method that is capable of characterizing nanostructure dimensions over large areas with an accuracy comparable to that of scanning…
This article provides the brief overview on effect of dopant on the performance of zinc oxide (ZnO) as photocatalysts for the degradation of dye wastewaters. ZnO itself is a semi conductor having wide band gap (3.37eV), thus requiring high energy to work as a photocatalyst. To decrease the band gap or to alter its req…
Linear permanent magnet synchronous motors are often used in applications where a high accuracy is needed. This paper investigates the influence of the key design parameters on the performance of a linear actuator with vertically magnetized magnets and a magnet array with quasi-Halbach magnetization. The performance i…
Highly ordered mesoporous MCM-41silica with hexagonal structure was synthesized using extracted amorphous silica from sedge (Carex riparia) ash. Obtained mesoporous materials functionalized by 3-(Aminopropyl) trimethoxysilane (APTMS) and their structures characterized by means of X-ray diffraction (XRD), nitrogen adso…
We study the properties of a finite two-dimensional electron gas system in the Hartree-Fock approximation. We obtain exact analytical expressions for the energy in a finite two-dimensional fully spin-polarized (spinless) system of electrons interacting with a Coulomb potential immersed in a finite square region unifor…
A compact high-resolution structure for plasmonic wavelength demultiplexers with cascading square resonators is proposed and demonstrated numerically by using the two-dimensional finite element method. It is found that the full width at half maximum of the transmission spectrum can be narrower (∼10 nm) than any result…
Tin sulfide (SnS) thin films were grown by single zone sulfurization process using sputtered tin layers. Metallic tin (Sn) layers were grown on molybdenum (Mo) coated soda-lime glass substrates by DC magnetron sputtering. The sputtered Sn layers along with sulfur flakes were kept in a graphite box and sulfurized using…
In the thermal modeling of electric machines by lumped parameters, an important step is the tuning of influential poorly known parameters to calibrate the model. The use of Inverse methods based on the minimization of residuals between measured and calculated temperatures is therefore of great help. In this paper, the…
A new approach which integrates multiple nonlinear constrained optimization algorithms in conjunction with an improved heuristic algorithm is presented. The approach includes capitalization of losses in the global design optimization process of three-phase oil-immersed distribution transformers. In addition, the propo…