Materials Literature
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The grafting of 4-vinyl pyridine (VP) to styrene-butadienestyrene triblock copolymer (SBS) by radiation-induced graft copolymerization was studied. The cohesive properties such as cohesive energy (Ecoh), molar volume (V), solubility parameter (delta), molar molecular weight (WM), specific volume (Vg), and density (1/V…
This paper discusses tree inception and breakdown voltage characteristics of XLPE cable insulation subjected to impulse voltages superimposed on ac voltage. The tree initiation tests were performed on laboratory-molded specimens equipped with needle electrodes, whereas the breakdown tests were conducted on a full-size…
As device geometry shrinks to 0.35 μm and below, the parasitic capacitance between closely spaced metal lines becomes important in terms of resistance‐capacitance time delay in device switching. In this study, we investigated the use of fluorine doped plasma enhanced chemical vapor deposition grown silicon oxide thin…
Abstract This paper presents the results obtained using a new method for analyzing polymer blend morphologies. The method is based on the selective solubilization of the matrix followed by a separation of the dispersed phase in suspension by filtering. A suspension of the nodular part going through the filter is obtai…
The Kossel diagram technique has been used in the study of the blue phases of liquid crystals for some years. In this paper quantitative information extracted from Kossel diagrams of blue phases one (BPI) and two (BPII) is presented. The method used provides absolute measurements of the lattice parameters in these blu…
In this paper, finite-element method (FEM) formulations with edge elements for directly calculating the phase constants of ferrite-loaded waveguides with arbitrarily magnetized directions are presented. Dispersion characteristics are calculated for the partially-filled ferrite rectangular waveguide structure, where th…
A systematic investigation of the properties of LiF:Mg,Cu,P has been performed with respect to the concentration of Mg (0-1.0 mol%), Cu (0-0.5 mol%) and P (0-5.0 mol%) activators. 120 different samples of LiF:Mg,Cu,P material were prepared using uniform batches of chemical substrates. From each material a group of sin…
A general theory for the spatial ordering of immobile clustered defects in irradiated materials is presented here. A vectorial form for the Fourier transforms of perturbations in the concentration of point and clustered defects is derived. Linear stability analysis indicates that, under conditions appropriate for void…
Abstract In the Maláiguide Complex (Betic Cordilleras, Spain), dickite is widely developed in clastic Permo-Triassic sequences. The lateral extent stretches at least 300 km along the Betic range, whilst vertical extent is variable and appears limited to the lowest 20–150 m of these sequences. Textural, chemical and cr…
Abstract Liquid‐crystalline (meth)acrylate monomers and polymers having mesogenic groups based on 4‐alkyloxy‐4′‐cinnamoylbiphenyl ( m = 2, 6) were synthesized. The methacrylate monomers 4c, d were polymerized by free radical polymerization. Under the same conditions, the acrylate monomers 4a, b gave unidentified polym…
A possible explanation for the relaxation behavior of many phenomena, and in particular of dielectric polarization phenomena, has been to assume the existence of a distribution of relaxation frequencies instead of a single relaxation frequency. It has been demonstrated that the natural scale for the distribution of re…
ac susceptibility (${\mathrm{\ensuremath{\chi}}}_{\mathrm{ac}}$=${\mathrm{\ensuremath{\chi}}}^{\ensuremath{'}}$-j${\mathrm{\ensuremath{\chi}}}^{\mathrm{\ensuremath{''}}}$) of an aligned bound ${\mathrm{Sm}}_{2}$${\mathrm{Fe}}_{17}$ powder sample has been measured along the easy direction as a function of temperature,…
A process based on liquid‐phase sintering and subsequent annealing for grain growth is presented to obtain in situ ‐toughened SiC‐30 wt% TiC composites. Its microstructures consist of uniformly distributed elongated α‐SiC grains, matrixlike TiC grains, and yttrium aluminum garnet (YAG) as a grain boundary phase. The c…
Assignment of the component bands in the infrared spectrum of tremolite containing A(Na,K) and TAl shows that the nontremolite components in the crystal are not randomly distributed throughout the structure but show extreme short-range order. Na and K at the A site are locally associated with Al at an adjacent Tl site.
Tensile properties of a cross‐ply glass‐ceramic composite were investigated by conducting fracture, creep, and fatigue experiments at both room temperature and high temperatures in air. The composite consisted of a barium magnesium aluminosilicate (BMAS) glass‐ceramic matrix reinforced with SiC fibers with a SiC/BN co…
In Escherichia coli, isochorismate is a common precursor for the biosynthesis of the siderophore enterobactin and menaquinone (vitamin K2). Isochorismate is formed by the shikimate pathway from chorismate by the enzyme isochorismate synthase encoded by the entC gene. Since enterobactin is involved in the aerobic assim…
A layered material, B${\mathrm{C}}_{2}$N, has huge polymorphic structures which depend on the atomic arrangements. In order to investigate the relation between the vibrational properties of monolayer B${\mathrm{C}}_{2}$N systems and their intralayer atomic arrangements, the lattice vibrations of various polymorphic st…
Radiographic contrast agents are associated with a number of adverse effects, including central nervous system effects and seizures. Almost all contrast agents are primarily filtered and excreted by the kidneys, and they accumulate in patients with end-stage renal disease. Brain retention of contrast associated with h…
Abstract Offscraped strata within the toe of Nankai accretionary prism display an overall facies pattern of thickening and coarsening upward. Detrital clay minerals within the Quaternary trench-wedge facies are dominated by illite; chlorite is the second-most abundant clay mineral, followed by smectite. Relative miner…
The equilibrium of dissociated dislocations is discussed in terms of intrinsic material properties such as the ideal stacking fault energy (ideal SFE) and the stacking fault (SF) strain. The ideal SFE is defined as the energy per unit area of an infinitely extended SF in an ideal infinite crystal. The effective SFE is…