Materials Literature
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The use of low frequency (20 kHz), high energy ultrasound for the degradation of the antibiotic ofloxacin in water was investigated. Experiments were performed with a horn-type ultrasound generator at varying applied power densities (130-640 W/L), drug concentrations (5-20 mg/L), hydrogen peroxide concentrations (0-10…
The thermoelectric power generation with various thermal conditions is examined. An analysis model considered the manufacturing factors and the pellet size is presented to predict the performance characteristics of thermoelectric generators. The theoretical analysis shows that the maximum power output is produced when…
Abstract The hydrogen and carbon monoxide separation is an important step in the hydrogen production process. If H 2 can be selectively removed from the product side during hydrogen production in membrane reactors, then it would be possible to achieve complete CO conversion in a single‐step under high temperature cond…
The urea-water-solution based selective catalyst reduction(SCR) system is one of the effective device to reduce the NOxemission of diesel engines. In order to realize the SCR technology in automotive application, a model-based approach is used for controller design in this paper. NOxemission must be regulated while NH…
We demonstrate ambipolar graphene field effect transistors individually controlled by local metal side gates. The side gated field effect can have on/off ratio comparable with that of the global back gate, and can be tuned in a large range by the back gate and/or a second side gate. We also find that the side gated fi…
The chitosan/polycaprolactone (CS/PCL) vascular scaffolds were prepared by electrospinning in order to combine the advantage of CS and PCL into the vascular scaffolds. The obtained CS/PCL vascular scaffolds were dried with ethanol, and then characterized by SEM and electronic universal testing machine. The endothelial…
This paper reports the reaction of cotton cellulose with sulphamic acid using pad bake process.
Multi-walled carbon nanotubes (MWNTs) were in-situ coated with anatase TiO2 via sol-gel process followed by annealing of the composites using infrared (IR) lamp. SEM results showed that MWNTs were coated with 15-45 nm thick TiO2 layer depending on the composite ratios. Based on the XRD results, MWNTs were found to sho…
Magnetic nanoparticles (Fe 3 O 4 ) were synthesized by the solvothermal method using FeCl 3 · 6H 2 O and ethylene glycol as a reactant. Powder X-ray diffraction, FT-IR, TEM, SEM, and VSM were used to characterize the magnetic particles. The reacting factors, such as reacting time, the concentration of iron source and…
Calcium tungstate nanocrystalline was successfully synthesised via a microwave irradiation method using Ca(NO3)2 and Na2WO4 in ethylene glycol, without the requirement of any calcination. The product was analysed by X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmissi…
The adsorption of five different IVA group atoms on graphene is studied by using the density functional theory. The adsorption energy, geometric, and electronic structure are calculated. We find that the adsorption energy decreases when the atomic number of adsorbate increases. The interaction between the adsorbate an…
The short-circuit photocurrent was measured in ferroelectric capacitors of polycrystalline and epitaxial quality. The interest was to study the possible relation between photocurrent and back-switching phenomena due to ferroelectric polarization imprint, as suggested by Pintilie et al. [J. Appl. Phys. 101, 064109 (200…
Based on the tight-binding formalism, we investigate the Anderson and the Kondo model for an adatom magnetic impurity above graphene. Different impurity positions are analyzed. Employing a partial-wave representation we study the nature of the coupling between the impurity and the conducting electrons. The components…
sublattices ferrimagnet Cu2OSeO3 with a cubic symmetry and a linear magnetoelectric effect. There is no spectroscopic evidence for structural lattice distortions below TC=60K, which are expected due to magnetoelectric coupling. Using symmetry arguments we explain this observation by considering a special type of ferri…
For accurate detection and diagnosis of Partial Discharges (PDs) in Gas Insulated Switchgears (GISs), there is a need for better understanding of the physical mechanisms for the PD activity. Accordingly, we have been investigating the PD characteristics and associated mechanisms for electrode/epoxy delamination of GIS…
Abstract In this work, the synthesis of magnetite nanoparticles by two variant chemical coprecipitation methods that involve reflux and aging conditions was investigated. The influence of the synthesis conditions on particle size, morphology, magnetic properties and protein adsorption were studied. The synthesized mag…
The solvent exchange of hydrogel particles allows direct loading of hydrophobic inorganic nanoparticles into the gel particles without modification of the particles surfaces and the hydrogel networks. The hydrophobic coating of the loaded nanoparticles is well retained, leading to an excellent chemical stability in wa…
Chitosan/alginate nanoparticles which had been optimized in our previous study using two different N/P ratios were chosen and their ability to release epidermal growth factor receptor (EGFR) antisense was investigated. In addition, the stability of these nanoparticles in aqueous medium and after freeze-drying was inve…
UNLABELLED: Paclitaxel has fared poorly in clinical trials against brain glioma. We hypothesized that superparamagnetic nanocarriers may enhance its bioactivities by delivering it into the brain. MATERIALS AND METHODS: The magnetic paclitaxel nanoparticles (MPNPs) were fabricated and their cytotoxicity against glioma…
Magnetization, x-ray diffraction, and specific-heat measurements reveal that SmCoAsO undergoes three magnetic phase transitions. A ferromagnetic transition attributed to the Co ions, emerges at ${T}_{C}=57\text{ }\text{K}$ with a small saturation moment of $\ensuremath{\sim}0.15\text{ }{\ensuremath{\mu}}_{B}/\text{Co}…