Materials Literature
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The formation and post-decomposition kinetics of supercooled austenite of low-alloyed pipe steels obtained upon heating in an intercritical temperature range is investigated by velocity dilatometry. The decrease in the stability of austenite in the pearlite region after austenization in the intercritical temperature r…
The transport coefficients (the Nernst-Ettingshausen coefficient Q 123, electrical conductivity σ11, thermal conductivity κ ii , the Seebeck coefficients S 11 and S 33, and the Hall coefficient R 213) in samples of layered compounds of the homologous series AIVBVI-A 2 V B 3 VI (AIV = Ge, Sn, Pb; AV = Bi, Sb; BVI = Te)…
Let G = (V, E) be a simple graph. The bipartite vertex frustration of G, denoted by ψ(G), is the smallest number of vertices that have to be deleted from a graph to obtain a bipartite subgraph. It is easy to see that ψ(G) is a topological index and G is bipartite if and only if ψ(G) = 0. Thus ψ(G) is a measure of bipa…
The effect of rare earth addition on thermal stability of Fe 50− x Cr 15 Mo 14 C 15 B 6 M x (x = 0, 2 and M=Y, Gd) is studied. Thermal and structural properties are measured using differential scanning calorimetry and x-ray diffraction, respectively. The microstructure is observed by using a scanning electron microsco…
Abstract In the present paper one can find a short review of the main experimental results on the switching effect and its theoretical analysis, which have been elaborated in the Ioffe Institute, Russia, from 1963 until today.
The Mössbauer spectra of the quasi-one-dimensional semiconductor antiferromagnets TlFeS2 and TlFeSe2 are analyzed. It is shown that complete compensation of the magnetic moments is violated in the quasi-one-dimensional antiferromagnetic domains of TlFeS2 and TlFeSe2 due to spin fluctuation (spin flops). In this case,…
Abstract An amphiphilic peptide that adopts a random-coil or β-sheet conformation depending on the pH of the dissolved aqueous solution forms a monolayered fiber array when a mica substrate is immersed in the random-coil solution. The random-coil peptide adsorbed on the substrate spontaneously transforms into a fibrou…
Isotropic electrically conductive adhesive with epoxy matrix filled with silver flakes was modified with addition of multi-walled silver nanotubes and with silver nanoparticles. Samples of adhesive as received and modified adhesive were formed. Part of the samples was aged in increased temperature, in increased humidi…
The dynamic viscosities of In-Bi and Ag-Yb alloy systems are measured by the torsional oscillation viscometer and the corresponding melt fragilities (M) are calculated from the temperature dependence of viscosities fitted by the Arrhenius equation. It was found that the melt fragility of the intermetallics is larger t…
Abstract The paper presents a short description of the model of the phenomenon of droplet spreading in presence of a liquid film, as well as the experimental facility, calculations methodology and results of experimental research concerning determination of the boundary angle at which droplet begins to slide on the ho…
To get basic information on corrosion of metals under sewage sludge environment, in this work, the corrosion behavior of SAE1045 steel under SiO2 gel with 3 wt% NaCl was investigated by electrochemical polarization method. The results show that the self-orrosion potential of the steel move to more negative value in Si…
Some effects induced by laser treatment in GeS2 glasses, glass-ceramics and selected chalcogenide crystals are presented. We show that thermal treatment of glasses or introducing controlled disorder in crystal lattice give the opportunity to make the desired changes in the optical and electrical properties of material…
The modified polyacrylamide/organic montmorillonite (PAM/OMMT) flocculant was prepared by in-situ intercalation polymerization with acrylamide monomer and OMMT under CO2 inert atmosphere. The OMMT was synthesized with MMT and cetyl trimethyl ammonium bromide (CTAB) as intercalation agent by cationic exchange reaction.…
The hydration performance and pore structure of fly ash-cement (FC) pastes were investigated by means of XRD, TG, ex-situ leaching (ESL) and MIP. The results reveal that the influence of curing age to the kinds of hydration products of FC pastes is unconspicuous. As the content of fly ash increase, the Ca(OH)2 content…
Took the heavy cylinder rolling mill as subject investigated, which is used to produce the nuclear power cylinder, the large hydrogenation reactor cylinder and the coal liquefaction reactor cylinder. And the cylinder rolling mill has two drive rolls which is different from conventional ring rolling mill. The rolling t…
The use of nanocarriers to deliver drugs to tumor tissue is one of the most important strategies in cancer therapeutics. Recently, gold nanorods (GNRs) have begun to be used in cancer therapy because of their unique properties. The purpose of this study was to show the potential that GNRs have against human nasopharyn…
Transverse flux switched reluctance motors enable the application of a large MMF per pole to a machine with a large number of poles. This paper will investigate the difficulties of building these machines and their advantages and shortcomings. Electrical, magnetic and mechanical difficulties are investigated and ways…
Nanoscale manipulation of properties of drug delivery systems (DDSs) provides improved control over the pharmacokinetics and pharmacodynamics of encapsulated drugs relative to free drugs. This article summarizes the preparation and therapeutic applications of paclitaxel–gelatin nanoparticles (PGNs) (Type B, 75 Bloom)…
Owing to the volatilization of isopropanol (IPA), instability in the alkaline texturization of monocrystalline silicon has been a big problem for a long time. Many additives were adapted to replace IPA, such as high boiling point alcohols. In this experiment, as a new attempt, sodium lauryl sulfate (SDS), a type of an…
Abstract In order to obtain nanopatterned surfaces, natural allophane particles originating from Japanese soils were immobilized as single particles on Si wafer substrates.When derived from aqueous suspensions, only a few nanoparticles were deposited and detected on the surface due to the weak adsorption of allophanes…