Materials Literature
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A novel approach for the creation of photopatternable fluorescent polyethylene-based liquid crystal composites was developed. Stretched porous polyethylene (SPPE) films were used as the polymer matrices. A liquid crystalline (LC) photopolymerizable mixture containing nematogenic dimethacrylate, cholesterol-containing…
Vegetable oil-based and potentially biodegradable polyesters were prepared from 9-hydroxynonanoic acid methyl ester. This paper describes ozonolysis of vegetable oils and the method for preparation of useful monomers and in particular 9-hydroxynonanoic acid methyl ester. Ozonolysis of soybean oil and castor oil in met…
Creep-recovery behaviour of natural fibre–biopolymer composite systems, poly(lactic acid)–flax and poly(hydroxybutyrate)–flax, with various additives, was quantitatively resolved into elastic deformation, viscoelastic deformation and viscous flow. Comparative interpretation of creep behaviour between composites with d…
Mechanical reliability such as strength and brittleness is of great interest for application of brittle materials, i.e. glasses and glass fibres. In this paper we study the fracture behaviour and the tensile strength of glass wool fibres (GWFs) of both basalt and E-glass compositions, which play an important role in b…
The dynamics of adsorption and oxidation of CO on Ru(0001) electrode in sulfuric acid solution have been studied using in situ FTIR spectroscopy under potential control and at open circuit, the latter at 20 and 55 degrees C. The in situ IR data show clearly that the bisulfate anion adsorbs on the Ru(0001) surface over…
“Etch and coat” methods, potentially useful for large scale production of superhydrophobic surfaces on metals, have been extended by introduction of a thin 20 nm Au interlayer which allowed thiol surface modifiers to be investigated. Fe, Ti and Zn surfaces modified in this way with a polyfluorothiol generally had lowe…
Thermal process characterization based on calculating effective activation energies from variable temperature diffuse reflection infrared spectroscopy (VT-DRIFTS) measurements is demonstrated. Experimental factors that affect the accuracies of activation energy values are outlined. Infrared radiation scattering effici…
The unique physical properties of nanowires and nanotubes originate from either the small dimensions of the objects, or structural modifications induced by the confined synthesis and surface effects. These features make them very promising for applications in nanoelectronics and nanosensors in particular. In this pape…
Homogeneous partition coefficients (D) for Ra and Ba in calcite were determined from coprecipitation experiments using the Continuous Addition Method (CAM). The D-values derived for Ra and Ba are: DRa = (1.5 ±0.6) ×10-1 and DBa = (1.6 ±1.1) ×10-2. Although these data were derived at low precipitation rates (R) for cal…
This communication shows experimental results that clearly demonstrated the influence of the crystalline surface structure of the platinum electrode on the early stages of the electropolymerization of pyrrole in aqueous media. The platinum surface structure determines adhesion, coverage level, charge transfer properti…
Human beta(2)-microglobulin (beta(2)m) forms amyloid fibrils in hemodialysis related amyloidosis. Peptides spanning the beta strands of beta(2)m have been shown to form amyloid fibrils in isolation. We have studied the self-association of a 13-residue peptide Ac-DWSFYLLYYTEFT-am (Pbeta(2)m) spanning one of the beta-st…
Two dinickel mimics, [LNi2(DMF)4](ClO4)3 () and [L'Ni2(CH3CN)4](ClO4)3 (), for the active site of urease supported by a disubstituted benzoate polydentate ligand were synthesized and fully characterized, subsequently addition of urea afforded two urea adducts, [LNi2(urea)4](ClO4)3 () and [L'Ni2(urea)4](ClO4)3 ().
Electrodeposition of diamondlike carbon films through oxidation of acetylides (prepared both in situ and ex situ) dissolved in dimethylsulfoxide (DMSO) was carried out at room temperature by potentiodynamic, potentiostatic, and galvanostatic methods onto gold substrates. Diamondlike carbon films (and nanoinclusions of…
Material selection in architecture is not only about choosing the strongest, cheapest, or most obvious materials available. Architects also choose warm, formal, functional, or local materials for buildings. And the material options are not limited by only these considerations. The material selection process is a compl…
The ability of nano (approximately 100 nm) sterically stabilized liposomes (nSSLs) to target tissue invaded by a foreign body was demonstrated. Radioactively labeled nSSL remote loaded with the anti-inflammatory drug methylprednisolone hemisuccinate (MPS), to form nSSL-MPS, were injected i.v. to mice that, 2 or 3 week…
-doped nanocrystalline terbium aluminum garnet ( , ) phosphors were successfully synthesized in low temperature by nitrate-citrate gel combustion method using microwave irradiation as a heating source. The pure TAG phase was obtained after calcining at for . The prepared nanocrystalline phosphors showed a broad peak a…
Titanium grade 2 (UNS1 R50400), alloy 400 (UNS N04400), alloy 20 (UNS N08020) and alloy C-276 (UNS N10276) were electrochemically explored to determine their corrosion susceptibility behavior when exposed to environments typically found on existent atmospheric column overhead systems in mexican crude oil refineries. L…
The effects of the number of screws and screw sizes on bending moment resistance of L-type furniture corner joints con structed of particleboard (PB) and medium density fiberboard (MDF) with resin surfacing were investigated in this study. Six different sizes of screws which included two diameters (4 and 5 mm) and thr…
The synthesis of a new series of EGTA (ethyleneglycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid) derivatives incorporating aromatic and functionalized aromatic moieties into the oxoethylenic bridge is described. A solution thermodynamic study was carried out to determine the influence of structural modificatio…
One of the most urgent requirements in nanotoxicology is a quantitative assessment of internalized nanomaterials in cells. We present an in vitro assay called ‘max-flat’ for the measurement of internalized particles in macrophages. Fluorescent polystyrene (PS) beads of diameters 1 µm, 500 nm, 200 nm, 100 nm and 20 nm…