Materials Literature
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Six different membranes previously prepared by the authors by graft copolymerization of acrylic acid (AA) and 2‐hydroxyethylmethacrylate (HEMA) onto chitosan were characterized. The graft copolymerization of the vinyl monomers onto chitosan was confirmed by FTIR and DMTA. The chitosan used was also characterized by DM…
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Purpose To establish a method of transforming the 3D cutting patterns constructed and modelled into 2D patterns, excluding the fabric parameters. Design/methodology/approach Three methods have been developed for transforming 3D cutting part segments into 2D segments. They are based on the computer‐based application of…
A large-scale, high-resolution finite element methodology for thermomechanical analysis of complex engine components has been developed. This paper describes the process and presents an example evaluation of an engine cylinder head. Because of its non-symmetric configuration, the cylinder head was entirely modelled. T…
Purpose In this paper, the main aim is to study the synergistic effects of alkanethiols upon inhibition of Schiff bases, N , N ′‐ethylen‐bis and N , N ′‐ ortho ‐phenylen‐bis in 0.5 M sulphuric acid solutions. Design/methodology/approach Measurements were carried out in a three‐electrode cell assembly connected to the…
Abstract— The C K edge of Orgueil nanodiamonds (Cδ diamonds) was acquired by electron energy-loss spectroscopy (EELS), with an energy resolution of 300 meV. The spectra show peaks at 282.5, 284.7, and 286.4 eV, which occur in the band gap below the main diamond edge and are absent from the bulk diamond spectrum. These…
We have used first-principles linear response calculations and molecular dynamics to study the relaxor ferroelectric Pb(Mg 1/3 Nb 2/3 )O 3 -xPbTiO 3 (PMN-x PT). First-principles calculations for ordered PMN show a low-symmetry monoclinic ground state. A new set of phase transitions to lower symmetry rhombohedral and m…
Silicon carbonitride (SiCN) films were deposited by radio-frequency magnetron sputtering and then annealed at different temperatures from 1100to1300°C in hydrogen atmosphere. The as-deposited films and films annealed at 1100°C did not show photoluminescence (PL), whereas strong PL peaks appeared at 355 and 469nm after…
Abstract A new kind of supramolecular building unit was synthesized from 1,2,4,5-benzenetetracarboxylic acid and 4-hydroxypyridine by a simple procedure. The structure of the building unit was characterized by 1H NMR spectroscopy, IR spectroscopy, EA, and XRD. Under suitable conditions, supramolecular hydrogels and fi…
ZnO nanostructures including nanorod and nanotower were synthesized on Ag nanoisland coated Si substrate by thermal evaporation and vapor phase transport at atmospheric pressure. The as-prepared ZnO nanorods and nanotowers were single crystal growing along [0001] direction. The growth of ZnO nanostructures strongly de…
Three phase transformers used in the electric power applications are composed either of three single phase transformers or they are three limb core type. The majority of three phase core-type transformer dynamic models neglect magnetic nonlinearity and saturation. This paper presents two magnetically nonlinear iron co…
The interactions between Er3+ ions OH groups in Er-doped Bi2O3-based glasses were investigated for samples with various Er OH concentrations. From the analyses of the total decay rate of the I13∕24 level of Er3+ it was confirmed that the OH groups are dominant quenching centers of excited Er3+ and a cause of concentra…
The diatom subclass Eunotiophycidae has recently expanded in composition. While it still includes a single order, the Eunotiales, and two families, the Eunotiaceae and Peroniaceae, the former includes four genera, Eunotia, Actinella, Semiorbis and Desmogonium, while the Peroniaceae includes only one, the genus Peronia…
The simple salt approximation for the lattice energy of double salts is used to provide an estimate of their molar solubilities. These calculations are compared with solubilities obtained from literature thermodynamic data and are within an order of magnitude for about 75% of the 81 minerals and other double salts exa…
Magnetization, static and ac magnetic susceptibility, nuclear forward scattering, and electrical resistivity measurements have been performed on polycrystalline ${\mathrm{Eu}}_{4}{\mathrm{Sr}}_{4}{\mathrm{Ga}}_{16}{\mathrm{Ge}}_{30}$, a type I clathrate that has divalent strontium and europium ions encapsulated within…
Abstract Single crystals of Ti 2 Rh 6 B were synthesized by arc-melting the elements in a water-cooled copper crucible under an argon atmosphere. The new silver-like compound with metallic luster crystallizes in space group Fm -3 m (no. 225) with a = 7.8191(5) Å, V = 478.05(5) Å 3 , and Z = 4. The refinement converged…
The tunable property and thermal stability of (Ba0.25Pb0.25)Sr0.5TiO3 films derived by pulsed laser deposition have been investigated. The substitution of Pb for Ba in (Ba,Sr)TiO3 (BST) system has been revealed to raise the transition temperature close to room temperature (RT) and enhance the tuning property. It is pr…
On the basis of literature data, montmorillonite (MMT) as a filler of polymeric composites was characterized, namely the structure and the possibility of its modification. The authors' investigations concerned the process of preparation of nanocomposites based on isotactic polypropylene (PP) with MMT, with use of thre…
Iodine is a fission product of major importance in a severe reactor accident because volatile species exist under reactor containment conditions. Radiolytic oxidation of iodide ions is an important source of volatile iodine species. The SISYPHE tests provide an experimental database of prime importance for the study o…
PbO-P2O5-As2O3 glasses containing different concentrations of Al2O3 ranging from 0 to 5 mol% were prepared. Dielectric properties (viz., dielectric constant , loss tan and a.c. conductivity over a moderately wide range of frequency and temperature and dielectric breakdown strength in air medium), optical properties (o…