Materials Literature
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Magnetic properties were investigated for the alternately deposited film of C60 and Co which has found to exhibit tunnel magnetoresistance (MR) of 10–80%. Magnetic field and temperature dependences of magnetization showed typical superparamagnetic behaviors with the blocking temperature of 40 K. The magnetization curv…
A comparison of the effects of ultrasound produced by low- and high-frequency ultrasonic apparatuses upon biological systems is one of the basic problems when studying ultrasound cavitation effects. One possibility for how to compare these effects is the indirect method which uses well-known physical quantities charac…
The impact of power network changes on one ageing mechanism in one simple insulation system is considered. The effects of non-power frequency events on electrical treeing in epoxy resins are critically reviewed. These non-power frequency events include 3rd, 5thand 7thodd harmonics and various impulses superposed upon…
The H(2)F(3)(-) anion in mononuclear [Cu(dpd)(2)][(H(2)F(3))(2)] (dpd = di-2-pyridyl-methanediol) exists as a HF(2)(-)/HF adduct as evidenced by infrared spectroscopy and X-ray crystallography.
The solid solution of barium titanate (BaTiO3) and sodium niobate (NaNbO3) -- Ba1−x Na x Ti1−x Nb x O3 (BNTN) is a new lead-free material. BNTN ceramics obtained by the conventional ceramic method possess the classical ferroelectric behaviour when 0<x<0.075 and 0.55<x<1 and relaxor behaviour when 0.075 ≤ x ≤ 0.55 1 Kh…
This paper presents simulations of initial velocity distribution of fragments for non-trivial shapes of casing in exploding shells, using a semi-empirical computational model. The key to the proposed approach is the use of transformation of a general geometrical shape to a hollow sphere followed by an application of G…
A practical and step-efficient synthesis of a novel homologous series of G1–G5 dendronized macromonomers and their G1–G4 polymers is described. All dendronized polymers have tert-butyl-protected carboxylic acid functions at the dendrons peripheries and are thus ideal candidates for subsequent “surface” engineering. In…
This paper discusses the possibility of iron loss reduction in non-oriented electrical steel (NO) sheets with a composition corresponding to JIS grade 35A210, and estimates the optimum iron loss from experimental data. The hysteresis loss of processed pure NO steel was decreased by 0.27 W/kg from the present 35A210 st…
Ultrasound was irradiated to an aqueous solution of KI for oxidizing iodide ions in a rectangular-channel type sonoreactor with 14 oscillators mounted in series. The ultrasonic frequency was 133.2 kHz. For different setting conditions with or without a reflector, the reaction was carried out in a batch and continuous…
This paper has investigated the basic characteristics of switching surges in a gas-insulated substation and induced surges to a control cable based on EMTP simulations. It has been found that a switching surge voltage on the core conductor of a gas-insulated bus (GIB) tends to increase and the oscillating frequency be…
To provide engineering data useful in design, manufacture and operation of hydrogen storage vessels in hydrogen refueling stations, fatigue test machine equipped with high-pressure hydrogen autoclave was introduced. The effect of steel’s strength level, temperature effect, fracture toughness and pressure effect were e…
Interaction of Pd-clusters [Pd(CO)(OCOR)](n) with NO was investigated, these Pd-clusters were found to promote the NO disproportionation into N(2) and NO(2)(-) in mild conditions; an eight-nuclear palladium cluster Pd(8)(micro-CO)(4)(micro-OOCCMe(3))(8)(micro-NO(2))(4) with a new type of structure and an uncommon set…
In order to study the low-temperature phase transition in CaCd6, which is attributed to a reordering of the innermost tetrahedral cluster shells, accurate Embedded-Atom-Method potentials are developed for this system. With these potentials, the ideal cluster structure and the couplings between neighbouring clusters ar…
In order to assess the structural integrity of a reactor pressure vessel (RPV), it is assumed that a surface crack resides through the cladding at the inner surface of the vessel. It is, therefore, important to precisely evaluate stress intensity factor (SIF) under the residual stress field due to weld overlay claddin…
We computed the thermal conductivity of silicon single crystal thin film with a thickness of 25 nm–134 nm at room temperature by non-equilibrium molecular dynamics simulation. The thermal conductivity was shown to depend on the thickness of the film, and is markedly lower than that in bulk silicon. The phonon classica…
Synthesis of four trinitrotoluene stilbene derivatives and assessment for SERRS activity is reported.
Mannich reactions have been carried out with a variety of model alkylphenols and dimethylamine, methylamine, and diethylenetriamine to trace the origin of persistent coloured products occurring in related reactions with pentadeca(e)nylphenol and 4- tert-alkylphenols. It was found to be attributable to the presence of…
Green composites composed of long maize fibers and poly ε-caprolactone (PCL) biodegradable polyester matrix were manufactured by the thermo-mechanical processing termed as 'Sequential Molding and Forming Process' that was developed previously by the authors' research group. A variety of processing parameters such as f…
To investigate the tissue adhesive function of a hydrogel composed of biocompatible amphiphilic polymers, polymers with various architectures were prepared from 2-methacryloyloxyethyl phosphorylcholine (MPC), electrolyte monomers and hydrophobic n-butyl methacrylate (BMA). A polyion complex (PIC) hydrogel was formed w…
Graphitic Structures by Design (GSD) is a novel technology for growing graphite in precise patterns from the nano to the macroscale, rapidly (&gt;1 layer/sec), at low temperatures (ca. 500°C), and in a single step using ordinary laboratory equipment. The GSD process consists of exposing particular metals (Ni, Pd,…