Materials Literature
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We have investigated phosphate glasses of metaphosphate composition containing three different cations Ag+, Li+ and Pr3+. Using Raman spectroscopy we study the influence of the modifier on the host structure of the glass. We observe an overall softening of the bands in the AgPO3 compared with LiPO3 and Pr(PO3)3. This…
The behaviors of phosphor screen under low‐energy electron excitation were investigated. A phosphor screen was deposited by an electrophoretic method, thereafter transparent tin oxide was implanted in this screen by electroplating. It was found that incorporation of a small quantity of tin oxide onto the phosphor scre…
Epilithic diatoms were sampled at 48 sites along the St. Lawrence River, from Salaberry de Valleyfield to Québec City, in an attempt to determine how diatom assemblages were related to measured water quality variables. Canonical correspondence analysis was used to explore the relationships between environmental variab…
The kinetics of the dissolution of colloidal gold in aerated cyanide solutions has been investigated with a view to developing a fundamental understanding of the mechanism involved. Experimental results obtained are consistent with an electrochemical mixed potential model, where the mixed potential is set up in the pa…
We have developed a new Corner potential suitable for computer simulation studies of pure and mixture systems composed of rodlike, disklike, and spherical molecules. The pair potential is assumed to have the shifted Lennard–Jones 12-6 potential which has the general form of εf(σ0/(r−σ+σ0)). The strength parameter ε an…
The thermoluminescence (TL) method can be used to discriminate irradiated and non-irradiated paprika. This study reports the polymineral composition of the dust adhered to paprika; radiation-specific luminescence is emitted by the inorganic material (mainly quartz, feldspars and calcite). On the basis of the shape of…
Niobium‐alumina (Nb‐Al2O3) composites have been fabricated via the pressureless sintering of compacts of intensively milled Nb‐Al2O3 mixtures. Strength and fracture toughness of the composites increase as the niobium content increases. For a composite that contains 50 vol% niobium, strengths of up to 680 MPa, with a c…
The nascent morphology of UHMW PE exhibits high melting point, high crystallinity, and increased WAXS line breadth relative to samples formed by melt crystallization. Different empirical relationships between crystal size and melting point are observed for nascent and molded samples. This differentiation is removed fo…
Silica membranes exhibiting excellent molecular sieving capability, which would find applications in fuel-cell electric vehicles with on-board hydrogen generation, for example, are the aim of the sol-gel strategies outlined here. It is shown that optimization of the sol-gel synthesis parameters is important in order t…
The mechanical properties of composites consisting of high density polyethylene (HDPE) and oil palm frond (OPF) have been investigated. Three sizes of OFF at different filler loadings were compounded using a single screw compounder. Modulus of rupture (MOR) of the OPF-HDPE composites decreased with increasing filler l…
An experimental investigation of the dynamics of horizontal soap films stretched over circular or square boundaries undergoing periodic transverse oscillations at frequencies in the range 20–200 Hz is reported. Concomitant with modes of transverse flexural oscillations, it was observed that two-dimensional vortices in…
Nanomorphologies and crystallographic orientations of the brazed interface of silicon nitride (Si 3 N 4 ) were analyzed via high‐resolution transmission electron microscopy. When Si 3 N 4 was brazed using an Ag‐Cu‐Ti alloy, titanium nitride (TiN) nanoparticles were formed adjacent to the ceramic as reaction products,…
Hexadecakis(2,2,2-trifluoroethoxy)-substituted vanadyl and zinc phthalocyanines, and hexadecakis(ethoxy)vanadylphthalocyanine, were synthesized and characterized. Their aggregation properties were studied by evaluation of the concentration dependence of absorption spectra. Hexadecakis(2,2,2-trifluoroethoxy)-substitute…
It is reported that annealing of oxidized porous silicon in water vapor at about 250 °C drastically enhances its blue emission. Infrared absorption studies indicate that this annealing increases all the absorption peaks related to O–H vibrations, except for that of free silanol which disappears completely. No traces o…
The BLANC program suite is a set of programs which can be used for macromolecular structure determination by X-ray crystallography. The suite is designed to provide experienced crystallographers and students with a number of simple tools, at the same time allowing the building and testing of new algorithms. Besides a…
Soluble preparations of [LysB28,ProB29]-human insulin analogue (LysPro) exhibit more rapid absorption than human insulin upon subcutaneous injection. Biphasic mixtures of LysPro and intermediate-acting insulin suspensions could provide advantages over current preparations for the treatment of diabetes. To prepare biph…
A prototype production system for recycling expanded polystyrene (EPS), which uses an orange oil, d-limonene, as the EPS shrinking agent, has been developed. This system consists of an apparatus to dissolve EPS and a recycling plant to separate the limonene solution. The recycling plant can mass reproduce polystyrene…
The stability of aqueous suspensions containing SiC nanoparticles prepared by inductively coupled plasma has been studied. Physicochemical analyses indicated that the as‐prepared samples consisted of monocrystalline spherical particles of the 3C‐SiC polytype with a mean diameter of about 40 nm. HRTEM clearly showed th…
Three simple equations are presented, which describe the variation of protein solubility (S) with changes in salt concentration, in terms of either the salt molality (M), the salt activity (ax), or the water activity (aw). Each equation yields, essentially independent, estimates of the numbers of salt ions (delta vx)…
Adsorption of proteins occurs via diffusion toward the interface, actual adsorption, and subsequent irreversible conformational changes resulting in denaturation of the native protein structure. The conventional kinetic models describing these steps are based on the assumption that the denaturation transitions obey th…