Materials Literature
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Purpose The purpose of this present work is to investigate how different parameters of the blast cleaning process affect properties and quality of brass parts surface. It aims to study the following process variables: particle abrasive shape: (spherical (S) and angular (G) shot), particle abrasive size (S170, G40 and…
Oncoids built by calcimicrobial laminae from the Pliensbachian Massone Member (Calcari Grigi Formation, Trento Platform) have been studied in detail for the first time. Two groups of microorganisms attributed to calcified cyanobacteria have been identified. The first represents a new taxon of the family Thaumatoporell…
The purpose of this study was to characterize the behavior of a functionally graded material through experimentation and analytical modeling. Functionally graded materials are a ceramic metal composite which transitions from metal on one face to ceramic on the opposite face. Creating reliable models required verifying…
This paper reports a new study where radiation effects are studied in details in an SOFC stack. The 3D model used includes and couples fluid dynamics, electrochemistry, electrical conduction, diffusion, and heat transfer physics. The model was built using in-house experimental voltage-current density data for validati…
Simulation of the QUENCH-12 experiment (reflood of a VVER test bundle) was performed by means of the computer code ATHLET-CD. The calculated results were compared with the ones measured during the experiment. Sensitivity analysis was performed for such parameters as gas flow rates, electrical parameters, breakaway ons…
Nano-sized barium titanate (BaTiO3) powders with ultra-high crystallinity have been successfully prepared by a hydrothermal condition at 170°C for only 2 h. In this study, the influence of processing parameters on the phase and the particle size of hydrothermally derived BaTiO3 powders was investigated. The powders we…
During normal lifetime, transformers are submitted to a variety of electrical, mechanical and thermal stresses. One of the most critical situations is that caused by external short circuits, which produces high currents in the transformer windings and hence high internal forces in the windings. These forces are potent…
The (0001) surface of layered InSe semiconductor crystals is studied experimentally using X-ray photoelectron spectroscopy and theoretically within the context of the method of the electron density functional with periodic boundary conditions. It was found that the structure of the surface layer of atoms and their sta…
Using Monte Carlo simulation methods in the grand canonical ensemble we have studied the behavior of mixed Ar-Kr, Ar-Xe and Kr-Xe monolayer films on the graphite basal plane. We have considered the adsorption of the lighter component, either argon or krypton, under the condition of a fixed chemical potential of the he…
Abstract Abstract 1446 Myeloid derived suppressor cells (MDSC) are a relatively novel population of myeloid derived immunomodulatory cells which have been reported to be associated with poor prognosis in solid tumors. Preliminary data suggest that this population is also increased in high risk newly diagnosed patients…
Thin epitaxial gadolinium manganite (GdMnO 3 ) films were manufactured on single-crystal substrates of neodymium gallate (001) (NdGaO 3 ) and strontium titanate (001) (SrTiO 3 ) by the high-frequency magnetron sputtering method. The RBS analysis demonstrated that the thickness of the obtained films was ∼100 nm and the…
This work presents the characterization of 7,7'-Bis[(aza-18-crown-6)carbonyl]thioindigo (I) by quantum chemical calculations and spectral techniques. The molecular geometry, frontier molecular orbitals (FMO), molecular electrostatic potentials (MEP) and nonlinear optical properties of I in the ground state have been c…
Widely used for the design of resonant electronic devices, Mason's scalar rule is adapted here to the study of resonant subwavelength optical structures. It turns out to be an efficient formalism, especially when dealing with multiple wave interference mechanisms. Indeed it allows to comprehend the underlying physical…
Investigations of nanoscale silicon powders obtained by plasma chemical synthesis in various process parameters were carried out by transmission electron microscopy, X-ray photoelectron spectroscopy, and infrared (IR) spectroscopy. It was demonstrated that the powders consist of spherical particles with an average dia…
A comparative analysis of structures of compact samples of Bi 0.5 Sb 1.5 Te 3 thermoelectric materials, obtained by the spark plasma sintering (SPS) and traditional hot-pressing methods, was performed by the X-ray diffractometry and scanning electron microscopy methods. It is shown that the spark plasma sintering meth…
Much attention to electrical properties of titanium dioxide is due to the fact that it has recently started to be used in the manufacture of various electronic devices. Temperature dependences of the directcurrent (DC) and alternating-current (AC) conductivities of titanium dioxide layers doped with vanadium, as well…
A simple method is reported for the synthesis of “alkyl amine interacted Cu2(OH)PO4 nanostructures” viz. nanoplates (copper NPs) and nanotubes (copper NTs) exhibiting interesting surfactant and amphiphilic properties suitable for solvent-free catalytic applications.
Magnetic Ni micro/nanostructures with controlled morphology have drawn intensive attention due to their interesting physicochemical properties and potential applications in micro/nanodevices. In this study, one-dimensional Ni nanochains with an average diameter of about 140 nm were prepared by a magnetic-field-assiste…
Abstract Polyethylene (PE)/fullerene C60 nanocomposites, and PE samples for comparison in the presence of 0.1 wt % and 0.3 wt % 2, 5‐dimethyl‐2, 5(tert‐butylperoxy) hexane peroxide (DHBP) were prepared by melt mixing. FTIR characterization showed that reactive C60 could be grafted onto PE chains via a radical mechanis…
Abstract To create reversible supramolecular ionic networks, ionic cross‐links were formed from acid pendant functions in poly(styrene‐co‐methacrylic acid) copolymers by the addition of calcium carbonate. The random dispersion of acid functions in the polystyrene chain is ensured by NMR analysis. The partial reaction…