Materials Literature
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Total energy calculations have been performed within the periodic density-functional theory framework to study the dissociation of molecularly adsorbed nitrogen monoxide NO over three different catalytic surfaces: palladium, rhodium, and palladium-manganese (100). The potential energy surfaces for NO dissociation on t…
Mesoporous organosilicas based on a bridged organosilicate have been synthesized using a triblock PEO−PLGA−PEO copolymer containing a more hydrophobic poly(dl-lactic acid-co-glycolic acid) block and the structural difference between mesoporous organosilicas prepared from PEO−PLGA−PEO and PEO−PPO−PEO block templates is…
Onconase is an amphibian protein that is now in Phase III clinical trials as a cancer chemotherapeutic. Human pancreatic ribonuclease (RNase 1) is homologous to Onconase but is not cytotoxic. Here, ERDD RNase 1, which is the L86E/N88R/G89D/R91D variant of RNase 1, is shown to have conformational stability and ribonucl…
A new copper carboxylate polymer with cyanoacetate anion as a ligand was synthesized and studied using X-ray diffraction, IR, and EPR spectroscopy. The crystal is tetragonal: a = 14.702(2) Å, c = 13.470(3) Å, Z = 8, space group I 4 1 / a , and R = 0.0634. The copper atoms in the centrosymmetric dimeric fragment have a…
In this study, we explore the use of La0.7Ba0.3MnO3−δ (LBMO) for use in uncooled infrared bolometers. To obtain a high temperature coefficient of resistance (TCR) (defined as 1/R dR/dT) at near-room temperature, thin films were deposited on SrTiO3 (100), LaAlO3 (100) and MgO (100) substrates by a laser ablation method…
ABSTRACT: This study investigated the esterification of pigskin gelatin with fatty acid catalyzed by acid in aqueous medium. Factors affecting the esterification reaction B temperature, pH, water content, fatty acid concentration, fatty acid type and reaction time‐ were elucidated in the view of optimizing the reactio…
The preparation of starch carbamates of wrinkled pea starch in homogeneous phase catalysed by dibutyltin dilaurate in DMSO as solvent is described. The empfloyed isocyanates have linear alkyl chains with 7, 9, 11, 15 or 18 carbon atoms. Starch carbamates with equal degrees of substitution and different alkyl chains le…
The current work is focused on the examination of a new method for the determination of the specific surface areas of non-porous and macroporous carbons from gas adsorption isotherms. This method has rigorous foundations since it utilizes the adsorption potential distribution which is a unique thermodynamic characteri…
Three Cocconeis Ehrenberg species, epiphytic on the leaves of Posidonia oceanica (L.) Delile, were studied by light and electron microscopy. A new species, C. pseudonotata, is described which is closely related to C. notata Petit and C. diruptoides Hustedt. Gross morphology and the presence of a sigmoid raphe and ster…
The mechanical response of knitted glass- (GF) and carbon fiber (CF) fabric-reinforced polyamide-12 (PA-12) composites was compared both under static (tensile, flexural) and dynamic (perforation impact) conditions. The GF- and CF-content of the composites produced by hot pressing of 8 layers of planar weft knits conta…
Abstract Catalytic reduction of NO by propene in the presence of oxygen was studied over Sn–Al2O3 prepared by the sol–gel method. The maximum NO conversion did not change much with Sn loading (1–5 wt%), although the effective temperature window for NO reduction shifted to lower temperatures with increasing Sn loading.…
Abstract While the association constant of the colored form of a thermally irreversible photochromic indolylfulgimide with 2, 6-bis (octanoylamino)pyridine in toluene at 21 °C was 156 ± 11 mol−1 dm3 through triplex hydrogen bonding, that of its colorless form, generated by visible-light irradiation, was increased to 8…
Submerged arc weld materials have been employed in a study of the effects of manganese and carbon on phosphorus segregation and intergranular embrittlement. The equilibrium grain boundary segregation behaviour of these elements during aging has been studied in two different boiler shell weld materials, which differ ma…
Abstract Paper presented a t the NATO A dvanced Study Institute, May 4-1 4 , 2001 (Kas, Turkey) The structure of the glass forming system (V 2 O 5 )x -(Na 2 O • P 2 O 5 ) (1-x) , (x = 0-0.4), has been inves tigated using Raman spectroscopy. The stretching vibrations of various phosphate groups, connected to phosphoru…
Abstract A series of hydrophobically modified poly(acrylic acid)( R H ‐PAA) were synthesized by solution copolymerization of acrylic acid with a small amount of alkyl acrylate (alkyl chain with a length of 8, 12, 14, 16, 18) and their solution properties were also systematically studied. It was found that the random d…
Polyphosphates of the compositions LiPO3, Li4H(PO3)5, and LiMn(PO3)3 were prepared by the reactions of Li2CO3 and MnO2 with melts of polyphosphoric acids at 240–350°C, and their crystal structures were established. The unit-cell parameters are a = 13.074 Å, b = 5.4068 Å, c = 16.452 Å, β = 99.00°, sp. gr. P2/n; a = 6.6…
Lithium titanate (Li2TiO3) is one of the most attractive tritium breeders for breeding blanket in fusion reactor from view points of low tritium inventory, high chemical stability and so on. The data on the performance of a blanket mockup with pebble bed under neutron irradiation is needed for the design of breeding b…
Polycrystalline Pb(Zr,Ti)O 3 (PZT) films were fabricated at a low temperature of 450°C by the electron cyclotron resonance plasma-enhanced chemical vapor deposition (ECR PECVD) method. Stoichiometric PZT films with the pure perovskite phase could be obtained over a wider range of deposition conditions on Pt/RuO 2 hybr…
A subbandgap light scattering investigation of vitreous arsenic trisulfide, $v\ensuremath{-}{\mathrm{As}}_{2}{\mathrm{S}}_{3},$ fibers subjected to external elongation stress has been undertaken in order to elucidate the photoinduced fluidity effect [H. Hisakuni and K. Tanaka, Science 270, 974 (1995)] in a microscopic…
Experimental solubilities are reported at 25.0°C for ferrocene dissolved in 46 different organic nonelectrolyte solvents containing ether-, chloro-, hydroxy-, ester, methyl-and t-butyl-functional groups. Results of these measurements, combined with previously reported ferrocene solubilities taken from the chemical lit…