Materials Literature
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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…
No abstract available.
Lattice parameter data of a wide range of oxide solid solutions M 1−y M' y O 2-y/2 formed between the fluorite dioxides MO 2 (y=0) and the C-type sesquioxides M'O 1.5 (y=l) are compiled and critically reviewed. Due to the formation of oxygen vacancy in the anion sublattice, the lattice parameters of these solid soluti…
Spark plasma sintering (SPS) is a technique to produce various alloys with low cost. The titanium alloys of Ti-M (M=Co, Ni, Nb, Mo, Ru, Pd, Ta, W and Re) were prepared by SPS and those microstructures and corrosion resistance were examined.A powder of M was mixed with the powder of titanium at at% of M from 0.1 to 1.0…
Natural fibre-nonwoven -mats made of jute, hemp and flax were used for the study. Composite plates of jute/epoxy, hemp/epoxy and flax/epoxy at different volume fractions were prepared by autoclave moulding technique. In jute/epoxy composites, it was found that the impact strength decreases with increasing fibre volume…
Dy 3+ doped fluorozirconate (ZBLAN) glasses were prepared, and the absorption and emission spectrum of Dy 3+ ions in ZBLAN glasses were measured. Using Judd Ofelt theory, parameters of Dy 3+ ions in fluorozirconate glasses according to the absorption spectrum and the emission cross of 6F 11/2 ( 6H 9/2 )→ 6H 15/2 tranb…
The present work focused on developping textile microstructure and improving magnetic properties of the 3Y-ZrO2/Ba-hexaferrite composite by post-plastic deformation. In summary, A 3Y-ZrO2/Ba-hexaferrite composite has been fabricated by powder metallurgical processes. Because BaFe12O19 particles behave like "small magn…
The thermal decomposition behavior of polylactide fabrics treated with tetrabromobisphenol A (TBP-A) or triphenylphosphate (TPP) in suspension was studied by thermogravimetry (TG) and differential thermal analysis (DTA). The TG analysis showed that the thermal decomposition of a TBP-A-treated sample with the limiting…