Materials Literature
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Evolutionary information derived from the large number of available protein sequences and structures could powerfully guide both analysis and prediction of protein-protein interfaces. To test the relevance of this information, we assess the conservation of residues at protein-protein interfaces compared with other res…
Cross-linking of gelatin A and B with N,N-(3-dimethylaminopropyl)-N'-ethyl-carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) was optimised by varying the NHS/EDC molar ratio at constant EDC concentration. Native and cross-linked gelatin gels were characterised using the degree of swelling, the number of…
Electrical conductivity of , as a function of temperature and oxygen partial pressure, is measured with a complex impedance method. The increase of electrical conductivity with reducing oxygen partial pressure can be described well by a model that assumes constant mobility of both oxygen vacancies and electrons, based…
We report measurements of the glass transition temperature, T(g), in free standing polymer films in a low M(n) limit where chain confinement effects are not observed. The measured T(g) values are accurately described by a layer model incorporating a mobile surface layer with a size determined by the length scale of co…
A two-dimensional model for biofilm growth and detachment was used to evaluate the effect of detachment on biofilm structures. The detachment process is considered to be due to internal stress created by moving liquid past the biofilm. This model generated a variety of realistic biofilm-formation patterns. It was poss…
The use of protein–substrate binding to program the self-assembly of nanoparticle-based structures from aqueous solution is highlighted here. The systems discussed include aqueous dispersions of metal nanoparticles with surface-attached antibodies and bivalent antigens in solution (see Figure), and ferritin-encapsulat…
The relations between morphology and electrochemical performance of Ni/yttria‐stabilized zirconia (YSZ) anodes are investigated. Four types of anodes are prepared on YSZ electrolyte three‐electrode pellets. A fine cermet of 0.5–1 μm particles, a coarse cermet of 2–3 μm particles, a porous Ni‐paste anode, and a Ni‐felt…
A room temperature extensional strain of 5.1% was observed in martensitic Ni/sub 48/Mn/sub 31/Ga/sub 21/ alloy in the magnetic field of 480 kA/m. The magnitude of field-induced strain decreases with increasing external compressive stress applied in the direction of expansion. The compressive stress of about 3 MPa prev…
We report the use of atom transfer radical polymerization (ATRP) to amplify initiators patterned on films of gold into polymer brushes of poly(methyl methacrylate) (PMMA), poly(hydroxyethyl methacrylate) (PHEMMA), poly( tert -butyl methacrylate) (PTBA), poly(isobornyl methacrylate) (PIBMA), and poly((dimethylamino)eth…
Not only a component of molecular conductors! Tetrathiafulvalene (TTF) and its derivatives are versatile building blocks in many areas of materials chemistry. This article reviews the current role of substituted TTFs in cation sensors, liquid crystals, intramolecular charge-transfer and nonlinear optical materials, su…
Uniform Ag nanowires have been synthesized within nanoscale channels of mesoporous silica SBA-15 by a simple chemical approach, which involves AgNO3 impregnation, followed by thermal decomposition.
Polynuclear compounds of magnetic transition metal ions are attracting large interest after the discovery that their magnetisation may relax very slowly at low temperature. Since their behaviour is similar to that of bulk magnets they may be called single molecule magnets. Here we review the magnetic properties of iro…
30 years of IrIII coordination chemistry with polyimine-type ligands are summarized. Over the years, milder reaction conditions have been used for their synthesis, allowing the incorporation of various functional substituents. Complexes are described with bidentate and terdentate ligands, with both N- and C-donor site…
A thermodynamics-based variational method is developed to establish the equations of motion for three-dimensional (3D) interacting dislocation loops. The approach is appropriate for investigations of plastic deformation at the mesoscopic scale by direct numerical simulations. A fast sum technique for determination of…
The brucite-like Mg2+/Al3+ layered double hydroxide (LDH) was synthesized by using the coprecipitation method and calcined at a variety of temperatures. The starting LDH and the calcination products (mixtures of binary oxides and spinels) were characterized by X-ray diffraction, IR spectroscopies and thermogravimetric…
Research Article| January 01, 2000 Jarosites and Their Application in Hydrometallurgy John E. Dutrizac; John E. Dutrizac Mining and Mineral Science Laboratories, CANMET, Natural Resources Canada, 555 Booth Street, Ottawa, Ontario, Canada K1A OG1 Search for other works by this author on: GSW Google Scholar John L. Jamb…
Solution pH was measured using water proton NMR via chemical exchange dependent saturation transfer (CEST) with selected chemical exchange sites. Several useful pH-sensitive proton chemical exchange agents were found: 5,6-dihydrouracil, 5-hydroxytryptophan, and a combination of 5-hydroxytryptophan and 2-imidazolidinet…
The skeletons of many organisms are composed of high-magnesian calcite(10–40 mol.-% Mg), which is not stable under equilibrium conditions. Here, high magnesian calcite particles (>20 mol.-%) are produced at ambient temperature in the presence and absence of additives. Most importantly these particles are shown to init…
A series of polyurethanes from polyols derived from soybean, corn, safflower, sunflower, peanut, olive, canola, and castor oil were prepared, and their thermal stability in air and nitrogen assessed by thermogravimetric analysis, FTIR, and GC/MS. Oil-based polyurethanes generally had better initial thermal stability (…
This article is a portion of a comprehensive study on carbon nanofiber–reinforced thermoplastic composites. The thermal behavior and dynamic and tensile mechanical properties of polypropylene–carbon nanofibers composites are discussed. Carbon nanofibers are those produced by the vapor-grown carbon method and have an a…