Materials Literature
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In order to clarify the influence of water vapor on evaporation and crystallization of an amorphous SiO2 scale formed on SiO2-formers, fused silica was exposed for up to 49 h at 1373—1673 K in N2-O2-H2O atmospheres. The water vapor concentration was regulated to 19.6 and 46.7% (vol%). Under conditions of low water vap…
Electrochemistry of gallium hexacyanoferrate (GaHCF) as an analogue of prussian blue having a high-potential redox system was studied. A thin film of GaHCF was directly generated on a Ga substrate surface to fabricate a modified electrode. Electrochemical behavior of the modified electrode was studied at a typical coo…
The effect of the acidity of the environment on the topography and photophysics of sensitizer molecules in homogeneous solutions, and when embedded in a lipid microenvironment, was studied. Four hematoporphyrin (HP) analogs were studied, which have chemical "spacers" of varying lengths between the chromophoric tetrapy…
In this paper, a phase diagram is developed for the molar mixtures of nematic liquid crystals of 5CB and MBBA. In order to understand the interaction of the two systems, dielectric permittivities ˜‖ and ˜⊥ were measured for mixtures of various concentrations. The usual assumption is that in the absence of chemical rea…
In order to clarify the correlation between the grain boundary energy and its atomic structure in copper, energy and atomic structure of ‹110› symmetric tilt boundaries in copper were simulated by molecular dynamics method. From the calculations, it was revealed that the grain boundary energy of ‹110› symmetric tilt b…
Abstract The reaction of 6‐amino‐2(2‐hydroxy‐2‐phenyl‐ethyl)benzo[de]isoquinoline‐1,3‐dione with toluene diisocyanate and other additives to form the structure of the fluorescent dye‐based polyurethane (PU) ionomer has been proven by infrared (IR) spectroscopy. In aqueous solution, the fluorescence performance for the…
The formation mechanism, optical absorption and emission spectra of Cr4+ ions-containing Li2O-SiO2 system transparent glass-ceramics were investigated. In this material, the main crystalline phase was Li2O•2SiO2, and the percent crystallinity and crystal size were 67-72 and 20-33 nm, respectively. The remarkable chang…
We synthesized multi-walled carbon nanotube(MWNT)/polyaniline(PANI)nanocomposites from an oxidative dispersion polymerization using poly(vinyl alcohol)(PVA)as a polymeric stabilizer. Purified MWNT whose metallic catalysts have been removed in acidic media was applied. The formation of nanocomposites and their morpholo…
A ternary (Fe0.82Ga0.18)85B15 alloy was vitrified by melt spinning at wheel velocities of over 28.5 m/s. Two exothermic peaks were observed at onset temperatures of 692 K and 787 K. The melt-spun amorphous alloy ribbon exhibits saturation magnetostriction of +30 × 10−6 at the field of 80 kA/m. The magnetostriction inc…
The band structure of n-type diamond samples co-doped with boron and sulfur was studied using ultraviolet photoelectron spectroscopy (UPS) and Mott-Schottky analysis. The results show that the Fermi energy of the co-doped diamond is about 0.8-1.9 eV above the Fermi level of boron-doped diamond. The electron affinities…
Polycrystalline (Na1−yMy)xCo2O4 (M=Nd, Sm, Dy and Yb; y = 0.01∼0.05) samples were synthesized by a polymerized complex method. The effects of partial substitution of rare-earth metals for a Na-site on the thermoelectric properties of NaxCo2O4 were investigated, and their differences with the sample prepared by a conve…
By combining X-ray diffraction and X-ray absorption spectroscopy, the structural evolution of the InSe alloy has been explored up to 3.3 GPa and 1500 K with the use of the Paris–Edinburgh large volume cell. These conditions allowed us to study the solid and the liquid states and to measure the pressure evolution of th…
A model experiment was performed to investigate movement of inclusions near the solid wall and engulfment into the solidifying front. Polystyrene particles (100 μm in diameter) were suspended in flowing melts (water, 20 mass% NaCl aqueous solution and succinonitrile). As the average flow velocity increased, number of…
A general purpose shape memory alloy model has been developed and implemented in MSC.Marc 2003. This model is based on a phenomenological model that provides a description of a wide range of the observed behavior, which is tractable from both analytical and computational viewpoint. The present model describes the deve…
X‐ray photoelectron spectra (XPS) of carbyne‐like carbon (CLC) film obtained by the polymer reaction route were measured and analysed. Dehydrohalogenation reaction was carried out effectively regardless of the starting precursors. Cls core‐level spectrum of CLC film shows the anomalous lowest peak maxima at 282.6 eV c…
This unique guide to Plone covers everything from installing Plone (on Mac OS X, Windows, and Linux) to writing code for the system. As part of the Apress library of Python programming and content man
Changes in composition of diatom (Bacillariophyceae) communities and pollen content were analyzed in two cores from the lake Krakower See, Mecklenburg-Vorpommern, Northern Germany. Based on the pollen stratigraphy, a time-depth-curve was built that allowed an estimate of the rate of sedimentation. The pollen curves, e…
One of the authors has proposed an HCCI combustion engine system that was fueled with dimethyl ether (DME) with a high cetane number and methanol-reformed gas (MRG) with a high anti-knock property in the previous research. In the system, both DME and MRG are to be produced from methanol by onboard-reformers utilizing…
Combustion tests on SiC/SiC CMC components were performed in an aircraft combustion environment using the rich-burn, quick-quench, lean-burn (RQL) sector rig. SiC/SiC fasteners were used to attach several of these components to the metallic rig structure. The effect of combustion exposure on the fastener material was…
The effect of impurities on formation of interfacial metallic voids, during uniform dissolution of aluminum in 1 M NaOH, was investigated. These voids are thought to act as initiation sites for pitting corrosion, and were previously shown to be formed by NaOH dissolution. Samples of three different bulk purities were…