Materials Literature
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This paper describes the results of copper coupons exposed to a class III mixed flowing gas environment (MFG) following the guidelines given by the Battelle Laboratory and the International Electrotechnical Commission for environmental testing. Corrosion products were studied in detail using scanning electron microsco…
Plane wave based ab initio DTF all valence electron spin polarized calculations are reported for the electronic structure and geometry of differently shaped graphene molecules. These polycyclic hydrocarbon molecules comprise four series: D2h symmetric linear polyacenes C4m+2H2m+4 (m=2,…,25); D6h hexagulenes with zigza…
Dendrimers are three dimensional polymers, nanoscopic in size, most widely explored in the field of drug delivery in recent times. In order to establish these polymers as controlled and targeted drug delivery systems, they should be non-toxic, biocompatible and biodegradable. The purpose of the present study is to inv…
The ligand triethylenetetramine-N,N,N',N'',N''',N'''-hexaacetamide (ttham) was synthesized with the aim of forming lanthanide complexes suitable as contrast agents for magnetic resonance imaging applications utilizing the chemical exchange-dependent saturation transfer (CEST) effect. It was designed to exclude water m…
Proton Conduction in Perovskite Oxide BaZr0.5Yb0.5O3 − δ Prepared by Wet Chemical Synthesis Route, Ahmed, Istaq, Knee, Christopher S., Eriksson, Sten-Gunnar, Ahlberg, Elisabet, Karlsson, Maths, Matic, Aleksandar, Börjesson, Lars
This paper describes recent progress on a hydrogen magnetic refrigerator. Magnetic refrigeration makes use of the magnetocaloric effect, and is well known as an efficient method in principal because its cooling cycle can most closely follow the Carnot cycle with appropriate heat switches. A liquefaction principal of o…
We recently shown, using tight-binding calculations, that nonequilibrium valley polarization can be realized in graphene, when the current is injected through "valley filter": a ballistic point contact with zigzag edges. Here we demonstrate, that the effect is surprisingly robust against changing the crystallographic…
A method for the synthesis of thiochromans based on the reactions of stilbenes and alkoxycarbenium ion pools, which were generated and accumulated by the reaction of anodically generated ArS(ArSSAr) + with thioacetals, has been developed.
Twenty thermophilic/thermotolerant fungal strains were isolated from compositing soils and screened for production of different enzymes (Endoglucanases, β-glucosidase, Fpase and xylanases) to assess their deinking efficiency. Three isolates, Aspergillus sp. AMA, Aspergillus terreus AN1, and Myceliophthora fergusii T4I…
An alternative method for the preparation of polyhedral phenylsilsesquioxanes is reported. Phenylsilsesquioxane resin and freshly hydrolysed phenyltrimethoxysilane was refluxed with various phase-transfer catalysts and potassium fluoride in toluene yielding octaphenylsilsesquioxane, or in a mixture of THF and ethanol…
Unprotected arylbiuret units were smoothly introduced onto pi-conjugated structures to afford new supramolecular materials leading to interpenetrated networks.
This study adopts the acoustic emission (AE) method to measure partial discharges (PD) in a cast-resin dry-type transformer and proposes a waveguide atop the high-voltage winding of the transformer to improve the propagation of the PD acoustic signals occurring in winding to acoustic emission sensors used. A waveguide…
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A polymer based Ferroelectric gate FET at 1T non-volatile memory on bulk silicon is demonstrated. Spin-coated 40 nm and 100 nm P(VDF-TrFE) (70%-30%) ultra-thin films have been integrated onto 10 nm SiO2layer as gate dielectric into a conventional silicon n-MOSFETs. A 1T non-volatile memory cell with an operating volta…
Addition of H2 to the phosphine alkene ligated complex [Rh(dppe)(PCyp2Cyp′)][BArF4] 1 (Cyp = cyclo-C5H9; Cyp′ = cyclo-C5H7, ArF = 3,5-(CF3)2C6H3) in the solid state results in hydrogenation of the alkene and uptake of two further equivalents of H2 to afford the dihydride–dihydrogen complex [Rh(dppe)(PCyp3)(H)2(η2-H2)]…
A series of solid solutions in the La0.8Sr0.2MnO3±δ (LSM)–xLa0.95Ni0.6Fe0.4O3−δ (LNF) system were synthesised by solid-state reaction to investigate the effect of Ni/Fe substitution for Mn on their DC electrical conductivity, structure and thermochemical stability. A non-linear change in structure, conductivity, magne…
Abstract For electrochemical systems such as solid oxide fuel cells (SOFCs) or solid oxide electrolyzer cells (SOECs), perovskites are widely used as cathode material for the reduction of molecular oxygen. At present, strontium-substituted lanthanum manganite, La 1- x Sr x MnO 3-δ (LSM), is used as standard SOFC catho…
Smaller size reactors are going to be an important component of the worldwide nuclear renaissance. An inappropriate application of the economy of scale would label the small-medium size reactors as not economically competitive with larger plants because of capital costs ($/kWe) and O&M costs ($/kWh) that would app…
Films of bamboo‐like carbon nanotubes (BCNTs) were grown directly on copper substrates by sulfur‐assisted hot filament chemical vapor deposition (HFCVD). The effects of substrate temperature and growth time over the BCNT structure were investigated. The films were characterized by scanning electron microscopy (SEM), R…
Mesoporous alumina (MA) samples with high surface area and comparatively narrow pore size distributions were synthesized for the first time using aluminium powder as an aluminium source and polyethylene glycol (PEG) as a structure directing agent via a sol–gel method in alkaline solution. Thermogravimetric and differe…