Materials Literature
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Thermoplastic starch is potentially a low cost alternative biodegradable plastic that is readily available material, but owing to its poor mechanical properties and high susceptibility to water, its actual replacement of the polymers currently in use is limited. In this study we investigated the employment of wood pul…
Oxygen reduction on Cu in near-neutral 5% NaCl and its subsequent inhibition by Cr(VI) and Ce(III) compounds has been examined using stationary and rotating Cu electrodes. The results show that Cr(VI) is a highly efficient inhibitor not matched by comparable concentrations of Ce(III) in its effect. Results suggest ( i…
General introduction Topological spaces and dynamical systems Groupoids, $C^\ast$-algebras, and their invariants Approaches to Calculation I: Cohomology for codimension one Approaches to Calculation II: Infinitely generated cohomology Approaches to Calculation III: Cohomology for small codimension Bibliography.
High-silica zeolite with (MTW), Beta with (BEA), and ZSM-5 with (MFI) coatings were synthesized by hydrothermal crystallization without seeding using a new two-silica method on Al-alloy (Al-2024-T3 and Al-6061-T4) and stainless steel (SS-304). The pure-silica MTW and BEA coatings synthesized in this study have not bee…
We studied systematically the crystal structure of simultaneously ferroelectric and antiferromagnetic RMn 2 O 5 (R = Pr-Lu and Y, except Tm) oxides, based on powder X-ray diffraction and Rietveld analysis. We propose a simple picture of the change of the structure with the size of a rare earth ion.
A magnesium (Mg) solid solution with a novel long periodic hexagonal structure was formed for a Mg97Zn1Y2 (at%) alloy in a rod form prepared by extrusion of atomized powders at 573 K as well as in a melt-spun ribbon form. The novel structure of the rod alloy had an ABACAB-type six layered packing with lattice paramete…
A series of six, cationic, zwitterionic and anionic Eu complexes has been examined for the analysis of hydrogencarbonate concentration in the intracellular and extracellular ranges; an anionic complex incorporating three glutarate residues and a sensitising acridone chromophore (lambda exc = 410 nm) exhibits a 69% cha…
Poly(ε-caprolactone) (PCL) layered silicate nanohybrids were synthesized by ring opening polymerization of ε-caprolactone according to a well-controlled coordination–insertion mechanism. Montmorillonites were surface-modified by non functional (trimethylhexadecylammonium) and hydroxy functional alkylammonium cations,…
The kinetics of localized corrosion in AA2024 alloys were studied using the foil penetration technique. The growth kinetics for localized corrosion in AA2024-T3 exhibited a strong anisotropy, being slower in the short transverse or plate through-thickness direction than in either the longitudinal or long transverse di…
Abstract The linear combinations of Gaussian‐type orbitals–fitting function (LCGTO‐FF) method has been used to investigate the cohesive properties of three fluorite structure actinide oxides (ThO 2 , UO 2 , and PuO 2 ), and their clean and hydroxylated (111) surfaces, within the generalized gradient approximation (GGA…
Surfactant-templated sol-gel polymerisation was explored to synthesize the resorcinol-formaldehyde (RF) gels without supercritical drying step, which were further carbonised to obtain porous carbons of a tunable pore size.
Recent advances in liposome technology have resulted in the production of effective drug delivery formulations, although toxicity concerns remain. In order to overcome this problem we prepared anionic liposomes without using any volatile organic solvent or detergent. Liposomes prepared by this heating method (HM-lipos…
Polyaniline (PANI) has been studied as an active material for electrochemical capacitors. Polymerization of aniline to PANI has been carried out potentiodynamically on a stainless steel (SS) substrate, instead of Pt-based substrates generally employed for this application. The PANI/SS electrodes have been evaluated by…
Polyvinylsilazane, as a precursor for Si‐C‐N ceramics, was prepared by ammonolysis of functionalized chlorosilanes. Pyrolysis under inert atmospheres at T p = 1000°C led to an amorphous Si‐C‐N‐(H) ceramic. Further heat treatment caused the transformation to the thermodynamically stable crystalline phase assemblage. Th…
The cryptate [EuII(2.2.2)(H2O)2]2+ displays several interesting features with respect to pO2 responsive MRI contrast agent applications: it is relatively stable against oxidation, it has two inner sphere water molecules, and the water exchange and electron spin relaxation rates are in the optimal range to attain high…
Iron(III) tetraphenylporphyrin triflate, Fe(tpp)OTf, works as an efficient and characteristic Lewis acid catalyst in the selective rearrangement of α,β-epoxy ketones into 1,2-diketones.
Mesocellular carbon foam composed of nanometer sized primary particles was synthesized using hydrothermally synthesized MSU-F silica as a template and poly(furfuryl alcohol) as a carbon source.
In order to elucidate design principles for biocompatible materials that can be created by in situ transformation from self-assembling oligopeptides, we investigate a class of oligopeptides that can self-assemble in salt solutions to form three-dimensional matrices. This class of peptides possesses a repeated sequence…
Transparent silica glasses were obtained by sintering a green compact (fabricated by slip-casting methods for high-purity silica glass powder) in diverse atmospheres. The relationships between sintering atmosphere and sintering temperature that result in transparent, sintered silica glass were shown. The results indic…
Argon- and air-plasma treatments have been used to modify the surface of sisal fibres. The Taguchi method of experimental design with three factors and three levels is used to optimise the treatment parameters in relation to fibre strength. The effects of plasma treatment on interfacial bonding between sisal fibres an…