Materials Literature
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We present a resonating-valence-bond theory of superconductivity for the Hubbard-Heisenberg model on an anisotropic triangular lattice. Our calculations are consistent with the observed phase diagram of the half-filled layered organic superconductors, such as the $\ensuremath{\beta}$, ${\ensuremath{\beta}}^{\ensuremat…
Abstract A simple and versatile technique has been developed to prepare TiO 2 and TiO 2 ‐based composite (TiO 2 –CdS and TiO 2 –Au) nanotube arrays. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray (EDX) analysis, X‐ray diffraction (XRD), thermogravimetric analysis (T…
Carbon nanotubes (CNTs) have been in the forefront of nanoscience and nanotechnology because of their remarkable electronic, mechanical, and thermal properties and specific functions. CNTs have high potentials for possible applications in the fields of energy, electronics, IT, and materials. However, because of the in…
OBJECTIVE: To compare the effect of internal tibial rotation on the computed tomographic (CT) and standard radiographic assessment of tibial torsion (TT) in dogs. STUDY DESIGN: In vitro study. SAMPLE POPULATION: Cadaveric canine hind limbs (6 pairs). METHODS: The cranial cruciate ligament was transected, and caudo-cra…
Space charge is formed in cables insulated with crosslinked polyethylene. It has not been clear whether the crosslinking byproducts or the crosslinked polymer morphology is responsible for the space charge formation. In order to clarify this point additive-free noncrosslinked low-density polyethylene, additive-free cr…
Abstract Block copolymers of poly(pentafluorostyrene) (PFS) and poly(methyl methacrylate) (PMMA) (PFS‐ b ‐PMMA) have been synthesized using atom transfer radical polymerization (ATRP). Then, nanoporous fluoropolymer films have been prepared via selective UV decomposition of the PMMA blocks in the PFS‐ b ‐PMMA copolyme…
Two-dimensional aperiodic tilings are collections of polygons, devoid of any translational symmetries, capable of covering a plane without gaps and overlaps. Although aperiodic, these structures can exhibit order and symmetry in an extended sense. In this paper, we study the radiation properties of planar antenna arra…
Glucocorticoids can inhibit solid tumor growth possibly due to an inhibitory effect on angiogenesis. The antitumor effects of the free drugs have only been observed using treatment schedules based on high and frequent dosing for prolonged periods of time. As long-circulating liposomes accumulate at sites of malignancy…
Irradiation induces the formation of stacking fault tetrahedra (SFTs) in a number of fcc metals, such as stainless steel and pure copper. In order to understand the role of the material's parameters on this formation, pure Cu, Ni, Pd and Al, having a respective stacking fault energy of 45, 125, 180 and 166 mJ m−2, hav…
Phonon dispersions and vibrational density of states of MgSiO 3 postperovskite, the new high‐pressure phase of MgSiO 3 perovskite, are calculated as a function of pressure up to 180 GPa using density‐functional perturbation theory. The calculated frequencies are then used to determine the thermal contribution to the H…
Abstract Acid‐solubilized collagen (ASC) and pepsin‐solubilized collagen (PSC) were isolated from the skin of bigeye snapper ( Priacanthus macracanthus ) with yields of 64 and 11 g kg −1 wet weight, respectively. Both ASC and PSC were characterized as type I collagens with no disulfide bonds. Peptide maps of ASC and P…
SiO 2 -epoxy and SiO 2 -glass-fiber epoxy nanocomposites were prepared to study the influence of SiO 2 nanofiller particles on the mechanical properties. The size and concentration of free volume were tested by positron annihilation spectroscopy. The experimental results demonstrate that uniform dispersion of nanopart…
A high mobility (∼1.0cm2∕Vs) n-type organic field-effect transistor is devised in terms of the combination of semiconducting and metallic charge-transfer (CT) compounds, namely, DBTTF-TCNQ crystals as channels and TTF-TCNQ thin films as electrodes for carrier injections on top of the crystals. Comparison of the field-…
Arachidonate 5-lipoxygenase is the key enzyme in leukotriene biosynthesis and catalyses the initial steps in the conversion of arachidonic acid to biologically active leukotrienes. Leukotrienes are considered as potent mediators of inflammatory and allergic reactions and regarding their pro-inflammatory properties the…
V 2 O 5 thin films were prepared by pulsed laser deposition (PLD) over a wide substrate temperature range, 30−500 °C, and were characterized by studying their microstructure and optical properties. Rutherford backscattering spectrometry (RBS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM),…
Ferrocene-bridged trisporphyrin (2) was synthesized by two-steps condensation of corresponding aldehydes and dipyrromethanes, and its self-assembling behavior based on the complementary coordination motif of imidazolylporphyrinatozinc(II) was investigated in conjunction with hinge-like flexibility given by freely rota…
Three-dimensional, orthogonal lead sulfide (PbS) nanowire arrays and networks have been prepared by using a simple, atmospheric pressure chemical vapor deposition (APCVD) method. These uniform nanowires (average diameter 30 nm) grow epitaxially from the surface of the initial PbS crystal seeds and form orthogonal arra…
Lead magnesium niobate–lead titanate, 0.675Pb(Mg 1/3 Nb 2/3 )O 3 –0.325PbTiO 3 (PMN–32.5PT) ceramics were textured (grain‐oriented) in the 〈001〉‐crystallographic direction by the templated grain growth process. The textured PMN–32.5PT ceramics were produced by orienting {001}‐SrTiO 3 (ST) platelets (∼10 μm in diameter…
Single‐phase silicon carbide (SiC) nanotubes were successfully synthesized by the reaction of carbon nanotubes with silicon powder at 1200°C for 100 h. X‐ray diffraction patterns indicated that most of the carbon from the carbon nanotubes that were reacted with silicon at 1200°C for 100 h was transformed to SiC. Trans…