Materials Literature
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Wet electron microscopy (EM) is a new imaging method with the potential to allow higher spatial resolution of samples. In contrast to most EM methods, it requires little time to perform and does not require complicated equipment or difficult steps. We used this method on a common murine macrophage cell line, IC-21, in…
Co–Al–Ni alloys were produced by melt-spinning followed by heat treatment. X-ray and thermomagnetic studies revealed that the rapidly solidified melt-spun ribbons consisted of a nonequilibrium bcc-(Co,Ni)Al-type structure. The Curie temperature was closely dependent on the Ni content of the Co–Al–Ni alloy. Although th…
The Japanese and Spanish nuclear industries have conducted joint experimental programmes since early 1990's to address fuel performance issues such as fuel volume change and fission gas release. These efforts have produced large amount of valuable information on in-reactor performance of fuel materials representing cu…
Purpose To study the degradation behaviour of borosilicate glass, which is suitable for hermetic sealing with Molybdenum and Kovar (Fe/Co/Ni) alloys, as a function of concentration and temperature in both acidic and alkaline media for long durations, up to 160 h. Design/methodology/approach The degradation (weight los…
High-quality crystals of gallium selenide (GaSe) and thallium arsenic selenide (Tl3AsSe3) were successfully grown. The refractive indices were measured in the subterahertz spectral region using time-domain spectroscopy. GaSe has a refractive index of 3.2 and an absorption coefficient of 1 cm–1, along with an absorptio…
This paper presents a method for modelling the seam puckering of multi-layer fabrics by considering the thread shrinkage as well as seam structure and fabric compression properties. A theoretical investigation and numerical calculation of forces acting on the sewing thread were carried out. Based on this, the forces c…
We describe a novel process for expanding perlite rocks, at temperatures from 1220 to 1370 K and elevated pressures, (3.3–16.0) × 10 5 Pa, in flowing water vapor. Our results demonstrate for the first time that heating markedly increases the compressive strength of perlite, reducing its viscosity and giving rise to pe…
The effect of rare-earth doping (R = Gd, Dy, Ho) to different levels (0, 10 −5 , 10 −4 , 10 −3 , 10 −2 , and 10 −1 at %) on threshold switching and low-frequency current oscillations in single crystals of indium selenide, a layered III–VI semiconductor, has been studied in broad ranges of temperatures (77–400 K), wave…
Abstract This communication describes versatile vapochromic behavior that is accompanied by a phase change between charge-polarization (CP) and charge-density-wave (CDW) states with increasing and decreasing temperature in [{NH3(CH2)5NH3}2][Pt2(pop)4I]·4H2O (pop = P2H2O52−) (1).
The electrochemical behavior of antimony and antimony oxide (Sb2O3) films formed in sulfuric acid (H2SO4) and phosphoric acid (H3PO4) solutions has been studied using open-circuit potential measurements, galvanostatic polarization, and electrochemical impedance spectroscopy (EIS) techniques. The results showed that th…
A novel dynamic microcellular foaming technology is presented in the form of mechanical vibration, forming an oscillatory shear orthogonal superposition upon steady shear flow. The effects of steady and oscillatory shear on polystyrene foam processing were investigated with a novel dynamic foam processing simulator. C…
Abstract Different polyethylene–polypropylene blends have been prepared in the presence of trimethylol propane trimethacrylate (TMPTMA) monomer. The prepared polymeric samples were cured using an electron beam accelerator at different irradiation doses ranging from 5 to 50 kGy. The influence of loaded TMPTMA wt% and i…
This paper reports data on cellulose triacetate (CTA) film base stability obtained at 21 and -16 °C over a 10-year period. Results demonstrated the potential of subfreezing storage temperatures for stabilizing CTA films that have already started to decay. After over 10 years of storage at -16 °C, no change i…
Abstract It is well known that analysis using transmission electron microscopes (TEM) yields very high resolution images of thin specimens. However, the applicability of TEM analysis is not universal due to the requirement that a high internal vacuum is required. This high vacuum precludes the TEM study of living spec…
Polyamide (PA)-6 is an engineering thermoplastic. It finds its application in electrical, mechanical, and automotive parts due to its very high processing and excellent barrier properties to oils. Unfortunately, Nylon-6 (Ny6) is relatively high priced, has poor impact strength, particularly when notched, and poor dime…
In this paper, a novel uniplanar directional coupler using left-handed transmission lines is proposed. Short microstrip parallel coupled lines and asymmetrical delay line pairs make multi-sectioned coupler enhance the directivity as well as the coupling. Each delay line pair consists of a right-handed transmission lin…
This study focuses on the mechanism of lean NO(2) reduction by hydrocarbons (propane, propene, and isobutane) over HZSM-5. In-situ FTIR measurements indicate a close correlation between formation of isocyanate species, consumption of water (formed in the reaction), and formation of amine species. The results in this i…
Sols for Pb(Zr0.53Ti0.47)O3 (PZT) thin films were prepared by 2-methoxyethanol route from lead acetate, titanium n-propoxide, and zirconium n-propoxide, the latter either unmodified or modified with acetylacetone or acetic acid in a 2∕1 molar ratio and deposited on sapphire (0001). By Zr K-edge extended x-ray absorpti…
The deformation and strength characteristics, as well as rheological properties and biodegradability of film materials prepared by hot pressing and slot extrusion methods from polyethylene-plasticized starch-compatibilizer blends were examined. Polyethylene with grafted itaconic acid served as compatibilizer. The form…
Short fibre reinforced composites were made from keratin fibres obtained from poultry feathers. The matrix material was either polypropylene or a blend of polypropylene and maleic anhydride modified polypropylene (MaPP). In general, the addition of MaPP to polypropylene (PP) did not alter the tensile properties of the…