Materials Literature
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Poly(3,6-N-vinylcarbazole) (PVK) films were prepared by electrochemical oxidation of N-vinylcarbazole on a platinum electrode using acetonitrile as solvent and tetraethyl ammonium tetrafluoroborate as electrolyte. The electro-synthesis was carried out using electrical potential cycling in the presence of tetraethyl-am…
Calotropis gigantea Linn and Tridax procumbens Linn, are well documented medicinal plants distributed in Asia and Africa and are useful for many ailments. The anti-inflammatory activity of low dose of the aqueous extract of T. procumbens and ethanolic extract of C.gigantea were assessed on carrageenan induced paw edem…
Nanofibres are easily produced from polymer solutions of polyvinyl alcohol using the elec trospinning method. Nanofibres combined with nonwoven PP material (polypropylene) have potential uses in a wide range of filtration applications. The high surface area of a high porous structure makes nanofibres ideally suited fo…
Problem statement: Polyetherimide (PEI) has several uses such as electrical insulation.It can undergo different constraints like heat or high voltage which influence its performances as insulator.In this study, the effects of heating on structural and electrical properties of polyetherimide (Ultem 1000) are studied.Ap…
Novel benzylether type aldehyde and acetal terminated dendrons were synthesized and attached to a silica gel support; a linear spacer was also introduced as a control material. The supported dendritic compounds were mainly characterized by solid state 13C CPMAS NMR, elemental analysis and X-ray photoelectron spectrosc…
Recent development in Information and Communication Technology (ICT) has drawn attention of scientists and engineers to develop ICT enabled laboratories. In this context development of an ICT enabled high voltage laboratory with facilities of remote operation is required because of its demand in the Engineering educat…
Fresh-cut Fa-lun mango samples (Mangifera indica L.) were coated with chitosan solutions at concentrations of 0% (control), 0.5 and 0.8%, respectively. They were then placed into plastic trays, over-wrapped with polyvinylchloride film and stored at 6°C for 7 d. Fresh-cut mangoes were evaluated by measuring weight loss…
Polycrystalline samples of Ca3−xNaxCo2−xMnxO6 (x=0.0–0.5) have been prepared by the sol-gel cum combustion method using sucrose in order to investigate the effects of the coupled substitution of Na and Mn on Ca and Co sites on the transport properties of Ca3Co2O6(Co326). The products were characterized by Fourier tran…
This work is focused on structural and optical properties of TiO2 thin films doped with different amount of terbium. The thin films have been prepared by high energy reactive magnetron sputtering (HE RMS) and by low pressure hot target reactive magnetron sputtering (LP HTRS) processes. Thin films were deposited from m…
Brazilian kaolinite clay was used to study urea intercalation (K UR) and delamination (Kur/DL) processes. The intercalated sample was delaminated by ultrasonic treatment in acidic solution. The basal distance changed from 0.72 to 1.08 nm with increasing surface area from 20.3 to 90.5 m² g-1 for K UR and K UR/DL. Suspe…
We consider amphiphilic dendrimers of the second generation by an appropriate modeling of the inter-monomer interactions, introducing suitable attractive microscopic potentials between the inner, solvophobic monomers and repulsive potentials between the outer, solvophilic ones. By employing Monte Carlo simulations, we…
Ferroresonance is a nonlinear oscillatory phenomenon, which occurs in capacitance-coupled transformers under certain conditions in a power system. The magnetizing branch of the transformer at no-load is modelled by nonlinear equation using a laboratory recorded hysteresis loop of a transformer. Various numerical simul…
The previous CEA corrosion code COCHISE provided satisfactory simulations of in-reactor corrosion of the fuel cladding when used in its validity range. In contrast, it could lead to hazardous predictions if applied out of this range due to the strongly linked parameters mainly based on the analysis of French pressuriz…
Simple chemical cross-linking of beta-casein micelles resulted in the formation of thermally responsive proteinaceous nanoparticles that exhibit lower critical solution temperatures.
SHG measurements on a highly transparent clay film ion-exchanged with chiral metal complexes revealed that the mono-molecular layer of the chiral complexes in an interlayer space acquired a non-centrosymmetric character.
Malate dehydrogenases (MDHs) are specific class of ubiquitous and multimeric oxidative decarboxylases with well conserved amino acid sequences in structurally important regions and with similar overall structural topology. They mostly use malate or oxaloacetate as substrates to generate pyruvate and utilize preferenti…
Among the fields in which Russian science can chalk up, of primary importance are nanotechnologies involving nanosized-particles-based modern materials with preset properties. The specific properties of metallic nanoparticles open up wide possibilities of preparing novel materials in electronics, effective catalysts,…
Surface properties of ethylene and vinyl acetate copolymers (EVAs) are considered depending on their composition and history of surface formation. The kinetics of structural transformations in the near-surface layers of copolymers is investigated. Relaxation times and the equilibrium state of the EVA surface are deter…
The nanoscale peeling of the graphene sheet is numerically studied by molecular mechanics simulation. In the simulation, a rectangular-shaped monolayer graphene sheet with each side of 38 Å×21 Å, comprised of 310 carbon atoms, is peeled from the rigid graphite surface. The six-membered ring around the center position…
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