Materials Literature
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Abstract Gas composition analysis measurements have been performed in the outlet gas stream of a laboratory metal dusting test furnace in order to study the influence of metal dusting on gas reactions. This analysis has shown that carbon deposition is associated with metal dusting, i.e. the material most severely atta…
Abstract Poly( L ‐lactide) (PLLA) and poly(3‐hydrobutyrate‐ co ‐3‐hydroxyvalerate) (PHBV) were blended with poly(butadiene‐ co ‐acrylonitrile) (NBR). Both PLLA/NBR and PHBV/NBR blends exhibited higher tensile properties as the content of acrylonitrile unit (AN) of NBR increased from 22 to 50 wt %. However, two separat…
Well-shaped single crystals of NdNiO 3 perovskite have been grown for the first time under high oxygen pressure conditions, in a belt-type press at 4 GPa. The reaction took place in sealed platinum capsules, in the presence of KClO 3 as the oxidizing agent. It seems that the choice of hydroxides of the cations involve…
The influence of electron-donating ability of tertiary amines on the bleaching process of methylene blue and the coloration time dependence on different ITO roughness on glass substrates have been investigated to improve the electrooptical properties of a new photoelectrochromic organic film.
At ambient pressure the solubility of magnesium in iron is very limited (of the order of 0.025 at.% in the liquid state), and vice versa. In a series of experiments using the piston–cylinder and multi-anvil apparatus at pressures up to 20 GPa and temperatures up to 2000 °C, we found an increase in the solid solubility…
We have investigated the potential dependent surface phase behaviour of a Cu(111) electrode in a neutral sulfate containing electrolyte by cyclic voltammetry (CV) and electrochemical in situ scanning tunneling microscopy (ECSTM). The cyclic voltammograms show characteristic peaks for the formation/reduction of an oxid…
Abstract We investigated a system formed of isotactic polypropylene (iPP) and hydrogenated hydrocarbon resin MBG273 (up to 30 wt % resin) to study the influence of the composition on the morphology, structure, and properties of its blends and derived films. All the blends, after the mixing of the components in the mel…
Abstract The graft copolymerization of methyl methacrylate (MMA) onto high α‐cellulose was carried out homogeneously in an N,N ‐dimethyl acetamide/lithium chloride solvent system by using benzoyl peroxide as radical initiator. The rate of grafting was evaluated as a function of concentrations of initiator and monomer,…
Recent reports state that a high magnetic field improves the crystal quality of bovine adenosine deaminase (ADA) with an inhibitor [Kinoshita et al. : Acta Cryst. D59 (2003) 1333]. In this paper, we examine the effect of stirring solution on ADA crystallization using a vapor-diffusion technique with rotary and figure-…
Pd-capped Mg 2 Ni alloy thin films were prepared by DC magnetron sputtering using Mg, Ni and Pd targets, and their hydrogen sensing characteristics have been investigated. Pd-capped Mg 2 Ni films with thicknesses of 10 nm Pd and 40 nm Mg 2 Ni show a good hydrogen sensing property for hydrogen-containing air at room te…
Abstract The luminescent europium complex Eu(phen) 2 Cl 3 (H 2 O) 2 (phen refers to 1,10‐phenanthroline) was doped in poly(methyl methacrylate) (PMMA) and polyvinylpyrrolidone (PVP), respectively. The formed composite systems with different molar ratios of CO groups in polymers and Eu ions were characterized by X‐ray…
Multielectron ionization of colloidal CdSe quantum dots under intense femtosecond UV excitation has been studied. By directly probing the absorption from the ionized electron, quantitative measurements of the yield and dynamics of the ionization have been made as a function of excitation fluence and variations of size…
We have observed a reversible high-spin to low-spin transition around 11 kbar at room temperature for the polymeric spin crossover complex Fe(pyridine) 2 [Ni(CN) 4 ] using high pressure Raman spectroscopy. The pressure dependence of vibrational frequencies in the two spin-states has been studied up to 50 kbar. The res…
Luminescence is a highly sensitive analytical method since nowadays single molecule detection is becoming common and henceforth, its interest for medical analysis and diagnosis. In this short review, the emphasis was put on the basic principles pertaining to the design of efficient luminescent lanthanide-containing la…
A general synthetic route to the pyridine-bridged dithiazolodithiazolyl framework R 2 BPR 1, involving N-alkylation of a 4-substituted 2,6-dichloropyridine, followed by amination and double Herz cyclization with S 2 Cl 2, has been developed. The radicals R 2 BPMe (R 2 = Me, Ph) have been prepared and characterized by…
Abstract Ethylene/vinyl acetate rubber (EVM) was reinforced by sodium methacrylate (NaMAA) that was in situ prepared through the neutralization of sodium hydroxide and methacrylic acid in EVM during mixing. The mechanical properties of EVM vulcanizates with different NaMAA loadings and at different crosslink densities…
Abstract Different novel copolymers, ABA‐type block copolymers composed of polyamide4 as outer segments and polyoxyethylene as an inner segment and AB‐ and ABA‐type block copolyamides containing polyamide4 and another hydrophilic polyamide derived from a bicyclic lactam, were synthesized by the anionic ring‐opening po…
The microwave-assisted polyol process was investigated for the synthesis of several nanophase metals under different conditions in the temperature range of 100 to 200 °C. Nanophase Ag metal particle synthesis using ethylene glycol (EG) was carried out at 100 and 150 °C in the presence of polyvinyl pyrrolidone (PVP), d…
Temperature-dependent inelastic neutron-scattering measurements of the generalized phonon density-of-states for superconducting ${\mathrm{MgCNi}}_{3},$ ${T}_{c}=8\mathrm{K},$ give evidence for a soft-mode behavior of low-frequency Ni phonon modes. Results are compared with ab initio density-functional calculations. Th…
Two poly(pyridinium salt)s with bulky organic counterions (tosylate and triflimide) were synthesized by either the ring-transmutation polymerization reaction of 4,4‘-(1,4-phenylene)bis(2,6-diphenylpyrylium tosylate) with 1,12-diaminododecane on heating in dimethyl sulfoxide (DMSO) at 145−150 °C for 24 h or the metathe…