Materials Literature
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Steam reforming (SRM) and oxidative steam reforming of methanol (OSRM) were carried out over a series of coprecipitated CuO-CeO2 catalysts with varying copper content in the range of 30-80 at.% Cu (¼ 100 � Cu/(Cu þ Ce)). The effects of copper content, reaction temperature and O2 concentration on catalytic activity wer…
The aim of this research was to develop the interrelation between twist and the overfeed of the effect component and such structural and geometrical indices of fancy yarns as the linear density, the height of the effects, the width of the effects, the distances between effects, and the number of effects per unit lengt…
The crystal structures of general composition n Bi 2 O 3 - m B 2 O 3 were analyzed and systematized with the use of the structures of borate groups. Based on the CNs calculated by the bond valence method, the shapes of bismuth coordination polyhedra derived from an octahedron were suggested. A correlation was found be…
The initial corrosion of 7A04 aluminium alloy in marine atmosphere was studied.Salt fog test was used to simulate the marine atmospheric environment.Electrochemical impedance spectroscopy(EIS) and scanning Kelvin probe(SKP) were employed to investigate the electrochemical behavior of 7A04 aluminium alloy in marine atm…
Th is study was designed to determine some mechanical properties such as modulus of rupture (MOR) and modulus of elasticity (MOE) of wood treated with some environmentally-friendly fi re-retardant boron compounds. Sodium perborate (SP) boric acid, (BA), and borax (BX) were used as boron compounds. Wood specimens were…
An efficient, fast and easy method for the synthesis of new optically active and thermally stable aromatic polyamides (PAs) containing a pendant phthalimide group and L-leucine flexible side-spacer using ionic liquid (IL) by microwave irradiation, as well as conventional heating, has been investigated. ILs are outstan…
Melt sonocrystallization a novel particle engineering technique to enhance dissolution of hydrophobic drugs and to study its effect on crystal properties of drug. It forms Valdecoxib agglomerates with number of shallow circular pits on the surface leads to increase solubility. Melt sonocrystallization process was deve…
Changes in thermal and mechanical properties of polyvinylbutyral (PVB) modified phenolic resole resin were studied. The DSC and TGA studies show that an increase in PVB content results in a reduced thermal stability at temperatures above 360 °C, but causes little change in thermal properties at temperatures below 300…
NRC publication: Yes
We have reported a new approach to fabricate mesoporous silica composite nanosheets by milling the corresponding hollow spheres. The mesoporous nanosheets are amphiphilic, and can be well dispersible both in water and oil, serving as particulate emulsifiers in o/w or w/o systems. The mesoporous silica can assist other…
The aim of this study was to characterize the influence of functionalization of synthetic poly-(L-lactic acid) (PLLA) nanofibers on mechanical properties such as maximum load, elongation, and Young's modulus. Furthermore, the impact of osteoblast growth on the various nanofiber scaffolds stability was determined. Nano…
We study the thermal and electric transport of a fluid of interacting Dirac fermions as they arise in single-layer graphene. We include Coulomb interactions, a dilute density of charged impurities and the presence of a magnetic field to describe both the static and the low frequency response as a function of temperatu…
CO oxidation reaction was studied over monometallic and bimetallic palladium--platinum catalysts at 25:75, 50:50, and 75:25 Pd:Pt atomic fractions co-impregnated over a \gamma -Al_2O_3 support. The size of the metal particles, measured by modified hydrogen chemisorption, increased as the Pd fractions in the catalyst i…
Water‐soluble DNA‐wrapped single‐wall and double‐wall carbon nanotubes (DNA‐SWNTs, DNA‐DWNTs) have been well separated by length incorporating size‐exclusion high‐performance liquid chromatography (HPLC). The morphology and electronic properties of the size‐ (length‐) separated DNA‐SWNTs and ‐DWNTs are investigated by…
In order to investigate the phonon dynamics of molten NaI, inelastic X-ray scattering measurements were preformed near the melting point at the beamline BL35XU of the SPring-8. A fast sound mode exceeding the ultrasonic velocity of sound by about 45% was observed as in other molten alkali halides, which is in fairly g…
The evolution of microprocessor architectures has driven semiconductor manufacturers making transition from ceramic to organic package substrate technology in order to take full advantage of the silicon advances. However, large mismatch in coefficients of thermal expansion (CTE) between silicon die and organic substra…
Small indications were found in one replacement reactor pressure vessel head (RPVH) mock-up being fabricated from Alloy 690 material and compatible weld metals, Alloy 52/152. The mockups were non-destructively examined and the lowest number of cracks found was five and the highest number was 22. There are numerous ind…
Electrochemical etching of NiTi alloy in a pH 6 fluoride solution is proposed as a convenient, less dangerous procedure than traditional chemical etching in oxidizing HF media. Anodic polarization produces protons at the electrode surface, and local acidification increases the concentration of HF that efficiently diss…
(Ba1 − x Ca x )6Nb2O11 solid solutions were synthesized. The compositions were shown to be single-phase at 0.23 ≤ x ≤ 0.47 and have a double perovskite cubic structure with an incomplete oxygen sublattice. The interaction of solid solutions with water vapor and their electrical properties were studied. In dry atmosphe…
A pressure-induced phase transition and stability in Si 2 CN 4 polymorphs under high pressure are studied by first-principles calculations. The result shows that the phase transition pressure of α- and β-Si 2 CN 4 to the cubic spinal phase is 29.9 GPa and 27.5 GPa predicted by thermodynamic method respectively. Under…