Materials Literature
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Using the maleic anhydride as the anti-crinkle agent and nano-silica as the catalyzator, suitable amounts of emulsifier and osmosis agent were added to the solution for the anti-crinkle treatment of silk. The effect of the concentration of nano-silica and drying time were examined. Taking the restoring angle of the cr…
plantat -Inkubation Zur Abschätzung der in-vivo-Stabilität von plasmagespritzten Hydroxylapatit-Beschichtungen auf Knochenimplantaten wurden Langzeitversuche (bis 56 Tage) in proteinfreier simulierter Körperflüssigkeit nach Kokubo durchgeführt. Sowohl reine als auch Mangan-dotierte Hydroxylapatit-Schichten wurden durc…
Preferential precipitation on dislocations has been discussed by considering interaction energy between transformation strains to change the crystal structure and stress fields around dislocations. For quantitative calculation, precipitation of the hcp α phase from the bcc β matrix in a Ti alloy is analyzed. A previou…
The conventional strawboard technology employing MDI binders has shown technical and economical disadvantages, specifically, high resin costs and additional costs related to release agents required to avoid sticking of panels to press plates. The adhesion of urea formaldehyde (UF) resin to the straw fiber has been dem…
Neural Network (NN) and actual frequency transplantation (AFT) are combined for prediction of dynamic hysteresis when the exciting field, H(t), is highly polluted by harmonics. The NN forecasts the Fourier Series for flux density for well-known H(t) waveforms (i.e., triangular, square wave fields etc.). The task of AF…
The effect of Xe+ bombardment on the surface morphology of four different polymers, polystyrene (PS), poly(phenylene oxide), polyisobutylene, and polydimethylsiloxane, was investigated in ion energy and fluence ranges of interest for secondary ion mass spectrometry depth-profiling analysis. Atomic force microscopy (AF…
The type specimens of Perenniporia contraria and of its presumed taxonomic synonym, Fomes subannosus, have been revisited. In addition, some recent collections identified as P. contraria have been re-examined, demonstrating that the present concept of the latter taxon is confused. The species is illustrated and its co…
Some Keggin-structural (hetero)polyoxotungstates with a lacunary hole, such as undecatungstosilicate ([SiW11O39]8-, SiW11), greatly sensitize methicillin-resistant Staphylococcus aureus (MRSA) to beta-lactams. In this study, the effects of lacunary-substituted derivatives of SiW11 were tested to determine if the lacun…
Na- or K-substituted PrMnO3 and NdMnO3 phases have been prepared using neutral NaCl or KCl fluxes at a relatively low temperature of 900 °C. These flux syntheses not only promote the reaction at low temperatures but also act as a source of the alkali metal in the final product. The structures of these oxides have been…
The effect of a pi-electron-donating macrocyclic molecule on the photochromic behavior of viologen derivatives was investigated in a thin polymer film. The intermolecular interactions between the viologens and the macrocyclic molecule were investigated in a solution before photoirradiation. In acetone, benzylviologens…
The thermoelectric properties of dense Fe1-xMnxSi2 (0.00≤x≤0.10) fabricated by spark plasma sintering have been characterized in the temperature range between 300 and 1150K. Fe1-xMnxSi2 is p-type over the measured temperature range. The electrical resistivity (ρ), Seebeck coefficient (S) are strongly affected by the M…
This paper discusses the application of confocal laser scanning microscopy for the investigation of corrosion processes on aluminum alloy AA2024-T3 occurring beneath a transparent organic coating. The ability of the microscope to monitor the topography of both the alloy surface under the coating and the surface of the…
The objective of the current study was to investigate the relationship between polymer adhesion and post-coating thermal treatment. A novel adhesion technique was used to quantify the adhesive properties of applied acrylic films. Differential scanning calorimetry was used to determine the glass transition temperature…
Superplasticity is generally associated with fine grains, grain boundary sliding, accommodation, high tensile ductility and high strain-rate-sensitivity at elevated temperatures. This paper reviews some of the recent important findings in very fine-grained superplastic materials, including the areas of high-strain-rat…
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The development of 9-12% chromium steels is reported to have originated in 1912 with the manufacture of a 12%Cr:2-5% Mo steel for steam turbine blades by Krupp and Mannesmann in Germany [1,2]. However, in 1912-13 Brearley in the U.K., while attempting to develop high-temperature steels for gun barrels, accidentally di…
The dinuclear cobalt porphyrin of (5,10,15,20-tetrakis(N-methyl-4-pyridinio)porphyrinato)cobalt(II) (CoTMPyP) with (5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrinato)cobaltate(II) (CoTPPS) has allowed spectroelectrochemical analysis of electron transfer processes in DMSO. In the II–II valence state it undergoes stepw…
In order to clarify the relationship between electroluminescence (EL) and degradation in crosslinked polyethylene (XLPE), the EL measurement was carried out using three kinds of samples, block samples with two different electrode systems, and film samples. The spectral measurements revealed that the UV component of EL…
Abstract [(Por)M(R)(OOR′)] + Y − (Por: TPP [tetraphenylporphyrin], OEP [octaethylporphyrin]; M: Sb, As, P; R: Me, Et, Ph; R′: H, C(=O)m‐ClC 6 H 4 , t‐Bu) were prepared from [(Por)M(R)(X)] + Y − (X: OTf, Br). The reactivities of the peroxide porphyrins toward nucleophiles such as triphenylphosphine increased in the ord…
Electrical resistivity, infrared absorption and reflectivity measurements of a single crystal of black phosphorus have been carried out under pressure in order to clarify the semiconductor–semimetal transition. The resistivity showed a typical metallic temperature dependence at 1.8 GPa while a singular temperature dep…