Materials Literature
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Fabrication and characterization of different natural dyes extracts of dye sensitized solar cell (DSSC) are reviewed in this paper. Inorganic metal complex, N3 dye is also studied as a comparison. The paper focussed on the performance of sensitization which is related to the interaction between dye and TiO2 surface. T…
A mathematical model for the seeded emulsion copolymerization of styrene, butadiene, and an acidic monomer has been developed. The outputs of the model include monomer conversion, copolymer composition, solids content, average particle size, 4‐PCH and 4‐VCH concentrations, overall molecular weight distribution, gel co…
The subject of progressive collapse assessment in RC structures has been concerned in various studies. In contrast, most of these studies have attended to a scenario in which an instantaneous removal of a column due to unexpected impact or explosion has occurred. The present study addresses progressive collapse in RC…
Physical models of NO x formation are becoming more and more interesting in the area of combustion feedback control. The fact that cylinder pressure sensors are made available on the market enables fast and accurate calculations of heat release, which is an essential part of every physical NO x formation model. This a…
Organic–inorganic hybrid solar cells based on poly(3-hexylthiophene) and electrospun TiO2 nanofibers were fabricated by solution process. The efficiency of the device was improved by modifying CdS nanoparticles on the surface of TiO2 by electrochemical method. The CdS layer can lead to the increase of both open circui…
The domains exempted by the RoHS EU Directive, as aerospace, where Sn63Pb37eutectic solder alloy with low silver content addition are used, are characterized by a large range of working temperatures and high mechanical stress level. In the paper, the mechanical strength of solder joints produced using Lead and Lead-Fr…
Recent advances in Graded Density Impactor fabrication technique have increased the maximum achievable pressure in gas gun quasi-isentropic experiments to 5 Mbars. In this report, we outline the latest methodologies and applications of Graded Density Impactors in experiments at extreme conditions. These new Graded Den…
A novel axial field disk type switched reluctance motor (AF-SRM) with single teeth stator and segmental rotor is introduced in this paper. The proposed stator poles are composed of excitation poles and auxiliary poles, the rotor is made up of a series of discrete segments. Because of the axial field structure and nove…
SiNx-passivated AlGaN/GaN high electron mobility transistors (HEMTs) on Si substrates demonstrated high tolerance to 2 MeV proton irradiation, up to a dose of 6 × 1014cm-2. Radiation-induced changes were observed in Hall mobility, two-dimensional electron gas sheet carrier density, sheet resistance, ON-resistance, tra…
The phenomenon of particle resuspension plays a vital role in numerous fields. Among many aspects of particle resuspension dynamics, a dominant concern is the accurate description and formulation of the van der Waals (vdW) interactions between the particle and substrate. Current models treat adhesion by incorporating…
PURPOSE: To test whether citrate is elevated in adult patients with gliomas using (1)H magnetic resonance spectroscopy (MRS) at 3T in vivo. METHODS: Thirty-four adult patients were enrolled in the study, including six subjects with glioblastomas, eight subjects with astrocytomas (World Health Organization grade 3, n =…
The effects of powder stream when using different feeding nozzles on the attenuation of the laser power were investigated theoretically and experimentally. The powder streams were recorded with a high speed camera. The average velocity of the particles was obtained using standard Particle Image Velocimetry (PIV) techn…
Converter transformer is the most important equipment in DC transmission system. Polarity reversal is a special working condition of converter transformer in service, and the polarity reversal test is also generally regarded as the most important experiment for converter transformer. In the calculation of the polarity…
The Ground Management Program at John F. Kennedy International Airport (JFK) aims to leverage the availability of comprehensive airport surface surveillance data and airline schedule information to better manage the taxi-out process, reduce taxi times, and improve efficiency. During periods when departure demand excee…
In the last years the interest in new synthetic and natural titanosilicates has increased. Due to the tunable pore diameter and other distinct characteristics, these materials can be utilized for commercially important separations of gas mixtures of similar size molecules, catalysts and removal of radioactive elements…
Abstract Hydraulic pressure testing of composite gas cylinders damages the cylinders, but provides very limited information. For this reason, the Federal Institute of Materials Research and Testing (BAM) demands the assessment of the safety of design types for retest periods of more than three years by employing destr…
The present paper deals with the mode I and pull-out performance of unreinforced and with pin-reinforced carbon-fibre-reinforced plastic specimen. Especially, the influence of the pin geometry on the aforementioned tests was investigated. The rectangular pins require a higher pull-out force and cause higher energy con…
The results of the parametric analysis of the methanol oxidation to formaldehyde on the basis of the kinetic model of reactions on an iron-molybdenum oxide catalyst and the two-dimensional model of a multitubular reactor were reported in the paper. The results of kinetic experiments on an industrial Fe-Mo granular cat…
X-ray free electron lasers are used in measuring diffraction patterns from nanocrystals in the 'diffract-before-destroy' mode by outrunning radiation damage. The finite-sized nanocrystals provide an opportunity to recover intensity between Bragg spots by removing the modulating function that depends on crystal shape,…
A fractal (crumpled) polymer globule, which is an unusual equilibrium state of a condensed unknotted macromolecule that is experimentally found in the DNA folding in human chromosomes, has been formed through the hierarchical collapse of a polymer chain. The relaxation dynamics of the elastic network constructed throu…