Materials Literature
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Dielectric properties of surface stabilized ferroelectric liquid crystal (SSFLC) cells have been investigated both experimentally and theoretically. The thickness mode is found to consist of two relaxation processes. A decomposition of an analytical solution of the complex dielectric permittivitye(v) in terms ofthese…
The picosecond time-resolved spectroscopy is carried out to clarify the physical origin of the central peak that has been reported in uniaxial ferroelectric triglycine sulfate $({\mathrm{NH}}_{2}{\mathrm{CH}}_{2}\mathrm{COOH}{)}_{3}\ensuremath{\cdot}{\mathrm{H}}_{2}{\mathrm{SO}}_{4}$ (TGS). An ultraslow relaxational m…
The influence and the role of alkali metals added to Cu ion-exchanged NaX (Cu–NaX) catalysts on the gas-phase catalytic oxidation of benzyl alcohol were examined based on the oxidation results, O2 uptakes and insitu IR measurements. The addition of alkali metals to the Cu–NaX catalyst particularly promoted the catalyt…
Polyhydroxyalkanoate biosynthesis genes of Aeromonas caviae were expressed in Escherichia coli LS5218 (fadR atoC(Con)), and the polyhydroxyalkanoate-producing ability of the recombinants was investigated. A LS5218 strain harboring only phaCAc (polyhydroxyalkanoate synthase gene) did not accumulate any polyhydroxyalkan…
Fractography of AISI 316 unstabilized austenitic stainless steels, after tensile testing,is the main topic of the present work. To characterize relationships between the steelmicrostructure, mechanical properties, and fracture mode, methods of light, scanning, andtransmission electron microscopies were used. The trans…
The thermal decomposition behaviors of polystyrene, its derivatives, and polyolefins were investigated by thermogravimetric method in which gas chromatography and/or mass spectrometry are interfaced. Decomposition products of polystyrene and poly(p-methyl styrene) were found to be predominantly monomers with a few dim…
The diatomitic sediments in Falconara (6.93 to 6.08 Ma) have a total thickness of c. 27 m, and the sequence is composed of 41 diatomite/claystone couplets. The deposition of these biosiliceous sediments, seemingly modulated by the astronomical precession cycle (21,000 years period), has been suggested to have taken pl…
Thin films of (ZnO)x(CdO)1-x oxides were deposited on glass substrates by spray pyrolysis and annealed in air at 450º C. The structural and optical properties of the as grown and thermal annealed thin films are presented. The crystalline structure was studied by X-ray diffraction (XRD) having found the presence of the…
The objective of this paper is the interpretation of distributions and phase-resolved patterns of partial discharges apparent charge and energy. Results of the measurements performed have been obtained in long-term tests at increased electrical and thermal stresses. This issue is of vital cognitive importance for the…
Chemical Vapor Deposition of Barium Strontium Titanate Thin Films by the Direct Liquid Injection of Ba ( methd ) 2, Sr ( methd ) 2, and Ti ( mpd ) ( tmhd ) 2 Without Solvent, Lee, Jung‐Hyun, Rhee, Shi‐Woo
Soda-lime glass samples have been subjected to either a thermal or an electric field assisted ion exchange. The effective refractive indices of the modes supported by the guides have been measured using a prism coupler before and after annealing and refractive index profiles have been reconstructed from the data. The…
Tartaric acid is a low‐molecular weight organic acid commonly present in the soil solutions of humic horizons. Tartrate anion forms relatively stable complexes with heavy metals, which may affect heavy metal mobility in the root zone and uptake by plants. However, no methods are available for determining its content i…
Upward directional solidification experiments have been carried out on Pb-Sn binary alloys. The macrosegregation along the length of a sample in hypereutectic Pb-Sn alloys is not observed. However, it is observed in the hypoeutectic Pb-Sn binary alloy. The intensity of the longitudinal macrosegregation increases as th…
Abstract Three photochromic monomers containing a permanent dipole photochromic azobenzene group spaced from the methacryloyl moiety by a polymethylene segment were synthesized in three steps starting from 4‐cyanoaniline. The monomers were homopolymerized and copolymerized with an optically active monomer, (‐)‐menthyl…
The first trial for numerical simulations of solid/liquid interface shape change around an insoluble particle for Fe-C alloys has been carried out. Real-time interface shape evolution during unidirectional solidification has been calculated using the phase-field model with parameters determined by thin interface limit…
An radioactivity monitor for waste solution has been constructed using a liquid scintillation technique, which enables beta-emitter mixture to be analytically radioassayed. The method of least squ-ares has been applied to the radioassay for relatively low-level beta-emitter mixture in radioactive waste solution. This…
Test results of the modified wood (lignomer) are presented with a view to its future application in shipbuilding industry. Influence of modification process of the wood on its strength, water absorbability, impact and fire resistance properties is highlighted.
The effect of shape parameters of seam puckering on its fractal dimension has been analyzed to evaluate the seam pucker of the garments. The shape of seam puckering has been defined as three-dimensional waves that are generated on the seam line and propagate to the edge line. Five shape parameters are defined to chara…
Structural antiferrodistortive phase transitions have been studied in mixed disordered perovskites Rb1−xKxCaF3 crystals over a wide concentration range (0 < x < 1) by Raman spectroscopy and a full group theory analysis has been carried out. Raman spectra have been indexed in all phases and a “one mode” behavior is evi…
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