Materials Literature
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Paper made from recycled, chemically pulped fibers typically has lower strength than paper made from virgin fibers. This was confirmed with respect to tensile and compression strength for an unbleached softwood kraft pulp. It was also confirmed that the addition of sucrose, at high concentration, to virgin pulp before…
Ring twisting gives the strength properties of yarn like friction spinning. Two multifilaments arranged in parallel and slightly twisted together form a loose structure with a slightly mixed arrangement of fibres. The structure of pneumatic textured yarn obtained by means of a stream of compressed air has a greatly mi…
To gain a better understanding of the mechanism of corrosion inhibition by oxygen reduction reaction (ORR) inhibitors, the concentration dependence of ORR inhibition has been determined for hexavalent chromium, cerrous ion, and 2,5-dimercapto-1,3,4-thiadiazolate on a Cu rotating disk cathode. The results show critical…
The magnetic glass ceramics with the particles of SrFe12O19 having various aspect ratios was obtained by the crystallisation of oxide glass precursors in different chemical systems.
The binding properties of 1,4,7-triazacyclononane ([9]aneN3) to metal cations can be adapted through sequential functionalisation of the secondary amines with aminoethyl or aminopropyl pendant arms to generate ligands with increasing numbers of donor atoms. The new amino functionalised pendant arm derivative of 1,4,7-…
Abstract This paper summarizes recent synthetic efforts devoted to the generation of new, second-generation texaphyrin-type drugs, specifically species that involve known or potential anticancer agents covalently attached to a tumor-localizing texaphyrin core. Particular emphasis will be placed on the strategies neede…
Electroless gold nanoplating of various forms of surfactant tubules yielded mono-, double- and multi-helical gold nanowires and their yarns in solution.
A Mg—Zn—Y—Zr alloy sheet containing icosahedral quasicrystalline particles and Zr-rich particles has been developed by the thermomechanical processes, i.e. hot extrusion and hot rolling. The grain size is found to be 5 μm. The superplastic deformation behavior of the alloy has been investigated. Under the test conditi…
A facile strategy for the in situ synthesis of terbium complex-silica nanocomposites is described. The resultant spherical nanocomposites possess good monodispersity and exhibit luminescent properties of terbium complex.
Dense, tetragonal single-phased and nanocrystalline zirconia ceramics containing 3 mol % without impurities and with average grain sizes of 60 nm were prepared. Electrical properties were investigated by impedance spectroscopy as far as the ionic radius is increased from 0.098 to 0.109 nm, respectively, from to Conduc…
Recent results on dielectric spectroscopy of relaxor ferroelectrics are reviewed and analyzed in relation to the structural peculiarities and lattice dynamics.
The crystal structures, EPR spectra and magnetic properties of the novel halogen- and cyano-substituted nitronyl nitroxide radicals 2-(2,6-dichlorophenyl)benzimidazolyl N,N′-dioxide, 6, 2-(2,6-difluorophenyl)benzimidazolyl N,N′-dioxide, 7, 2-(2-chloro-6-fluorophenyl)benzimidazolyl N,N′-dioxide, 8, 2-(2,3,6-trichloroph…
Abstract The combustion of metal particles may generate a temporal electrical field due to a difference in the electrochemical potential across the growing oxide shell, which usually is a mixed ionic electronic conductor. A novel measurement technique enables simultaneously measurement of the temporal electrical field…
Textiles including polyester fibers made from recycled PET bottles have increased to be produced recently. We examined on performance and durability of woven fabrics that include recycled polyester fibers. First, forty-eight commercially available fabrics which include polyester fibers made from PET bottles were colle…
Self-diffusion measurements along the phase director of the nematic and smectic A phase of the thermotropic liquid crystal 4-n-octyloxy-4′-cyanobiphenyl (8OCB) have been performed by 1H fringe field NMR diffusometry in the static fringe field of a superconducting magnet. The method used proves well suited to a precise…
Inclusion crystals of 3,3′-bis-(4-fluoro-phenyl)-3H,3′H- [2,2′]biindenylidene-1,1′-dione (1b) showed a reversible color change from yellow to red upon photoirradiation, although 1b itself did not show photochromic property in the solid state.
The factorization rules of Li [J. Opt. Soc. Am. A 13, 1870 (1996)] are generalized to a cylindrical geometry requiring the use of a Bessel function basis. A theoretical study confirms the validity of the Laurent rule when a product of two continuous functions or of one continuous and one discontinuous function is fact…
A hydrogen bonding effect on photocurrent generation has been evaluated successfully in a mixed film of porphyrin and fullerene with hydrogen bonding on an ITO electrode, which exhibits efficient cathodic photocurrent generation as compared to the reference system without hydrogen bonding.
The cationic lanthanide complexes of two neutral tripodal N,O ligands, tpa (tris[(2-pyridyl)methyl]amine) and tpaam (tris[6-((2-N,N-diethylcarbamoyl)pyridyl)methyl]amine) are studied in water. The analysis of the proton lanthanide induced NMR shifts indicate that there is no abrupt structural change in the middle of t…
Abstract Thirty-two glycoconjugated porphyrins were synthesized by a modification of Lindsey method in the presence of Zn(OAc)2·2H2O as a template. The Zn2+ ion template strategy improved the yield about three-fold in the case of meta-substituted tetraphenylporphyrins. In addition, free-base porphyrins were obtained a…