Materials Literature
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Thermal power plants and refineries around the world share many of the same problems, namely aging equipment, high costs of replacement, and the need to produce more efficiently while being increasingly concerned with issues of safety and reliability. For equipment operating at high temperature, there are many differe…
In this work two different synthesis methods of perovskites, SrCo0.5FeO3, were compared: combustion synthesis and oxides mixture aiming at evaluating their use as membranes for partial oxidation of methane. The combustion synthesis method explores an exothermic, generally very fast and self-sustaining chemical reactio…
Samples of unalloyed iron powder were compacted and sintered in an abnormal glow discharge, generated in a gas mixture of 80% Ar + 20% H2 by using a pulsed power source. The samples were placed on a holder, acting as the discharge cathode, and were heated by the bombardment of ions, strongly accelerated in the cathode…
Short bamboo fiber reinforced epoxy composites were developed with varying fiber content. The void content, density, and weight reduction of these composites were determined. The void content of these composites was found to be decreasing with increasing fiber content. The density of these composites was found to be d…
As an efficient nanolens, we propose a self-similar linear chain of several metal nanospheres with progressively decreasing sizes and separations. To describe such systems, we develop the multipole spectral expansion method. Optically excited, such a nanolens develops the nanofocus (“hottest spot”) in the gap between…
Abstract New inorganic ionic liquids (IIL) consisting of an inorganic polyoxometalate anion with the Keggin structure and a sodium cation, that is Na 13 [Ln(TiW 11 O 39 ) 2 ]· x H 2 O [where Ln = lanthanide (type 1)], Na 5 [MTiW 11 O 39 ]· x H 2 O and Na 6 [MTiW 11 O 39 ]· x H 2 O [where M = transition metal (type 2)]…
Colorless and transparent aluminium phosphate gels and glasses with P/Al ratios ranging from 0.5 to 3.0 are prepared via the sol–gel process using aluminium lactate and phosphoric acid as precursors. This glass-forming range is significantly wider than accessible via the melt cooling route. Optimum pH ranges and therm…
The aim of Modeling and Simulation of Microstructure Evolution in Solidifying Alloys is to describe in a clear mathematical language the physics of the solidification structure evolution of cast alloys. The concepts and methodologies presented here for the net-shaped casting and the ingot remelt processes can be appli…
A hydroxyapatite-supported Pd nanocluster (PdHAP) efficiently catalysed the dehalogenation of various organic halides in the presence of atmospheric molecular hydrogen; chlorobenzene gave benzene in an excellent TON of 10 000 for 10 h. Moreover, the dehalogenation of halophenols in aqueous conditions was also achieved.
Optical anisotropy plays a fundamental role on light propagation in nematic liquid crystals. With specific reference to nematicons, we investigate the transverse dynamics due to the interplay of nonlinear self-confinement, birefringent walk-off and a bias-dependent transverse index profile.
The polysaccharide chitin is found in nature as a major component of the organic fraction of several biocomposites in which an organic matrix is associated with an inorganic fraction. The relationship between the mineral phase and the organic phase implies a high level of molecular recognition. Chitin in mineralized b…
A hydrous ruthenic acid possessing a layered structure with a crystalline framework was prepared by proton exchange of a layered potassium ruthenate. Its electrochemical capacitor behavior was studied by cyclic voltammetry in various electrolytes. Specific capacitance up to 390 F at a scan rate of 50 mV s −1 , which i…
The air- and moisture-stable pentanuclear yttrium cluster H(5)[Y(5)(mu(4)-O)(mu(3)-O)(4)(mu-eta](2)-Ph(2)acac)(4)(eta](2)-Ph(2)acac)(6)](Ph(2)acac = dibenzoylmethanide) has been used as a homogeneous catalyst for the oxidation of aldehydes to the corresponding carboxylic acids in the presence of air.
Wildland firefighters work in unfavourable environments involving both heat and moisture. Moisture in clothing systems worn by wildland firefighters may increase or decrease heat transfer, depending on its source and location in the clothing system, location on the body, timing of application and degree of sorption. I…
A conceptual design of a Heat Pipe‐Segmented Thermoelectric Module Converters (HP‐STMCs) space reactor power system (SRPS) for a net power of 110 kWe is developed. The parametric analysis changed the number of radiator’s potassium heat pipes from 224 to 336 and calculated the effects on the operation parameters and to…
The objective of this paper is to present a method for the design of solid wood panels with cross layers. The stress distribution in and the deformation behaviour of solid wood panels were analysed using the composite theory. The shear influence in solid wood panels was determined using the shear analogy method. A str…
Surface bound silicatein retains its biocatalytic activity, which was demonstrated by monitoring the immobilisation of silicatein using a histidine-tag chelating anchor and the subsequent biosilicification of SiO(2) on surfaces by surface plasmon resonance spectroscopy, atomic force microscopy and scanning electron mi…
Recently, in order to meet the increasing demand of power consumption of electronic devices, Power MEMS is attracting attention which aim is to generate power inside the electronic devices. The object of the-present research is to develop a micro power generator that converts kinetic energy into electricity. Electrost…
Three new dinuclear copper(II) complexes, derived from end-to-end and end-on azido bridging ligands and triamine derivatives, have been synthesized and their crystal structures have been determined by X-ray diffraction methods. These are the dinuclear end-to-end compounds, [Cu2(μ1,3-N3)2(Et3dien)2](ClO4)2 (1) and [Cu2…
A new type of compact band pass filters based on planar structures with three metal levels is proposed. The central layer consists on a coplanar waveguide (CPW) with periodic wire connections between the central strip and ground planes. In the upper and lower metal levels, split ring resonators (SRRs) are etched and a…