Materials Literature
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Abstract The present paper is in part a continuation of our recent work dealing with the fully reversible Li‐driven Cu extrusion/injection of Cu in Cu 2.33 V 4 O 11 . The peculiar electrochemical property of such a compound was mainly ascribed to both structural considerations (presence of anchoring oxygen, giving fle…
In this paper, the authors propose two modified temperature-dependent equivalent circuit models for single- and double-walled carbon nanotube (SWCNT & DWCNT) interconnects at first, and the temperature effect on crosstalk in SWCNT and DWCNT interconnects are investigated, respectively. The crosstalk-induced delay and…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. Bahoura, A. Lee, R. Mundle, R. B. Konda, G. Kogo, O. Bamiduro, O. Yasar, W. Moore, K. Zhang, F…
Y-doped BaCeO3 (BaCe0.90Y0.10O3−δ) thin films have been deposited on (100) MgO substrates by pulsed laser deposition. The BaCe0.90Y0.10O3−δ thin film prepared at substrate temperature of 600 °C and oxygen gas pressure of 15 mTorr exhibits a predominantly c-axis orientation. The thin film consists of small grains with…
The possible synergistic effect in the manifestation of the wear resistance and antifriction properties of nickel-Teflon composite electrolytic coatings was analyzed. The results of calculations of the diagnostic properties of the coatings in terms of the “concentration-wave” model are discussed in comparison with the…
Time-resolved synchrotron powder diffraction was used to follow the thermal transformation of cement-asbestos. Thermal transformation of asbestos fibers into nonfibrous crystalline phases is a promising solution for the elimination of these hazardous minerals. Time resolution offered by the use of an imaging plate det…
The photolysis kinetics was studied, and methods were suggested for photostabilization of complexes of europium with β-diketones and europium cinnamates and quinaldates in polyvinyl chloride.
The reactions of ethylene glycol with iron and cobalt oxalates upon heating in air are reported. Heat treatment of mixtures of oxalate powders with ethylene glycol yields new compounds (solvates) via the replacement of the water molecules in the oxalate structure by ethylene glycol molecules: MC 2 O 4 · 2H 2 O + HOCH…
Cyanoethylation of long alfa fibers was studied, and these chemically modified fibers were used to manufacture alfa-polyester composites. The dynamic mechanical thermal properties of an unsaturated polyester resin (cured) and of composites of unmodified and chemically modified alfa-polyester were studied using a dynam…
Abstract Depolymerization and monomer recovery from polycarbonate (PC) by methanolysis was investigated. Methanolysis with molar ratios of methanol to polycarbonate ranging from 12.5 to 50 was carried out from 170°C to 300°C for up to 30 min. Polycarbonate decomposed into two monomers, bisphenol A (BPA) and dimethyl c…
A cellulose derivative/liquid crystal composite‐type electro‐optical cell using a commercial cholesteric liquid crystal (CLC) was investigated. The electro‐optical properties of the system were examined, i.e. the dependence on applied voltage of the reflected wavelength and the minimum and maximum transmissions. A thi…
This paper presents analysis of leakage currents on high voltage insulators in frequency and time-frequency domains. Leakage currents were measured on five silicone rubber insulators under salt fog conditions and recorded over 1000 hours. Different types of leakage current patterns were identified and were grouped acc…
The physical properties of different varieties of cotton fibres of various origins have been studied after extraction using solvents and alkali scouring with reference to enzyme scouring process. Enzyme scoured samples show comparable results with that of solvent extracted and alkali scoured samples in terms of fibre…
Certain possibilities of scanning electron microscopy and cryoporometry based on nuclear magnetic resonance (NMR) have been evaluated to determine pore sizes in porous silicon. The results obtained by these methods have been compared. NMR cryoporometry has been shown to be promising in the investigation of porous mate…
A new thallium-rich variety of murunskite has been found in the Palitra peralkaline pegmatite at Mount Kedykverpakhk, the Lovozero alkaline pluton, Kola Peninsula, Russia. This mineral occurs as a flattened dark bronze segregation (0.3 × 0.8 × 0.8 mm) overgrowing ussingite in a cavity. The chemical composition is as f…
Abstract Vinyl ester resins are unsaturated polyesters, widely used as matrix for high performance composite materials. The paper presents the synthesis and characterization of some vinyl ester resin/hydroxyapatite bioactive compositions using an unsaturated copolyester based on turpentine oil as reactive diluent. The…
X-ray powder diffraction data collected in transmission and high-throughput geometries were used to analyze form I of atorvastatin. The X-ray wavelength of the synchrotron radiation used in this study was determined to be λ =1.3771 Å. Form I of atorvastatin was found to be triclinic with space group P 1 and unit cell…
Titanium is commonly used as an implant material because of its strength, durability, density, and ability to passivated. Two titanium surfaces were compared, one produced by passivation following the ASTM F87 standard and one produced by treating coupons with piranha. The XPS spectra of the two treated titanium surfa…
In this study, endothelial cell (EC)-seeded nanocomposite grafts were preconditioned with 1-2 dynes/cm(2) in vitro to establish whether low shear stress resulted in improved cell adherence prior to physiological shear stress (15 dynes/cm(2)). Alamar blue cell viability was assessed. Polymerase chain reaction was condu…
Abstract A new polymer poly{(lactic acid)- co -[(glycolic acid)- alt -(L-lysine)]} (poly[LA- co -(Glc- alt -Lys)]) was synthesized and modified with a cell adhesion peptide, Gly-Arg-Gly-Asp-Tyr (GRGDY, abbreviated as RGD). The process for preparing poly[LA- co -(Glc- alt -Lys)]/RGD involved four steps: Firstly, (3S)-3…