Materials Literature
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PURPOSE: To retrospectively review data in 13 patients with biopsy-confirmed nephrogenic systemic fibrosis (NSF), assess the associated risk factors, and report the incidence of NSF at the authors' institution. MATERIALS AND METHODS: This HIPAA-compliant study had institutional review board approval; informed consent…
Copper/lophine core/shell nanocomposites were fabricated through the self-assembly of lophine on the surfaces of copper nanostructures. The growth of the lophine shells was induced by the cooperation of coordination and several other noncovalent interactions. The dimensions, structures, and morphologies of the nanocom…
The molecular mobility of peroxy radicals at the ends of isolated polystyrene chains (IPSOO) tethered on the solid surface of poly(tetrafluoroethylene) (PTFE) was investigated in a vacuum in the temperature range from 10 to 250 K by electron spin resonance spectroscopy. The onset of an anisotropic tumbling motion of I…
The pulsed field gradient nuclear magnetic resonance method has been used to study self-diffusion of cyclohexane in a commercial MCM-41 material at different external gas pressures from zero to saturated vapor pressure. It is found that the effective diffusivities exhibit three different regions with increasing pressu…
We present experimental studies on the dielectric properties of amorphous cerium dioxide in Au–CeO 2 –Au systems on strontium titanate substrates. From measurements of the capacitance versus contact area we calculated the dielectric constant of cerium dioxide at room temperature to be r = 26.9 ± 0.5. These measurement…
[structure: see text] The synthesis of a Pacman heterobisporphyrin associating an octaethyl porphyrinatozinc (ZnOEP) energy donor and a triaryl porphyrinatozinc (ZntPP) energy acceptor around a calix[4]arene spacer is described. Contrary to previous symmetrical architectures, correlations between the chromophores in t…
A ray-theoretic account of the passage of light through a radially inhomogeneous transparent sphere has been used to establish the existence of multiple primary rainbows for some refractive index profiles. The existence of such additional bows is a consequence of a sufficiently attractive potential in the interior of…
Gold nanoparticles (Au NP) have been synthesized in aqueous phase under ambient conditions in the presence of a series of various cationic double chain as well as dimeric (gemini) surfactants. The spacer chain and twin tail length of these surfactants has been systematically varied to see the effect of hydrophobicity…
The formation of cadmium sulfide (CdS) particles in the gaps between the layers of the multilamellar vesicles is described, introducing a new pathway in the preparation of nanometer-scale particles. The in situ structural characterization of both the CdS particles and the vesicles as a reaction medium was performed in…
Poly( d, l -lactide)s with fluorocarbon functional groups located at either the chain end or center are synthesized by the ring-opening solution polymerization of d, l -lactide using monohydroxy or dihydroxy terminated semifluorinated alcohols as co-initiators respectively. The surface composition−depth profiles of th…
The experimental parameters that control the size and size distribution of dysprosium oxide nanoparticles synthesized by homogeneous precipitation technique have been systematically investigated. The particles were characterized with respect to their size, shape, and thermal decomposition behavior. It was found that t…
The dependence of surface plasmon resonance (SPR) characters of core-shell structure ellipsoidal nanorods was investigated as functions of the gold shell width and dielectric constant. A dipole-limit calculation indicated that, there are four SPR absorption peaks occur. The two shorter wavelength peaks are attributed…
There are still many unanswered questions related to the problem of a capillary surface rising in a tube. One of the major questions is the evolution of the liquid meniscus shape. In this paper, a simple geometry method is proposed to solve the force balance equation on the liquid meniscus. Based on a proper model for…
Abstract Amphoteric superabsorbent composite with semi‐interpenetrating polymer networks (semi‐IPN) composed of poly(acrylic acid) (PAA)/Ca‐bentonite/poly(dimethyldiallylammonium chloride) (PDMDAAC) was prepared by a combination of intercalative polymerization and a sequential IPN method and the effects of reaction pa…
This paper presents the results of the experimental study of nano and micro indentation size effect on selected (001) oriented face centered cubic (FCC) crystals (Ni, Au, and Ag). Following a detailed description of experimental techniques and correction factors, indentation size effects in (001) oriented Au, Ag, and…
In order to evaluate the possibility of using Cr³⁺ co-doping to modify the emission properties of Pr³⁺-based quantum cutting phosphors, which emit one ultraviolet (UV) and one visible photon from each vacuum-UV photon absorbed, into phosphors that emit two visible photons, the optical spectroscopies between 150 and 75…
We present a novel configuration for a twisted-nematic liquid-crystal display (TN-LCD) that makes it operate as a controllable polarization rotator. We extend a previously reported polarization rotator configuration using a zero-twist LCD inserted between two quarter-wave plates. We first operate the TN-LCD in the pol…
Adsorption dynamics of ${\mathrm{O}}_{2}$ on Cu(100) and on reconstructed $\mathrm{Cu}(100)\text{\ensuremath{-}}(2\sqrt{2}\ifmmode\times\else\texttimes\fi{}\sqrt{2})R45\ifmmode^\circ\else\textdegree\fi{}\text{\ensuremath{-}}\mathrm{O}$ at 300 and $553\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ have been investigated by emp…
Abstract Molten caprolactam, in which a polyamide copolymer (HPN) containing rigid segments was dissolved, was polymerized by means of anionic ROP to in produce polyamide (PA, nylon) 6 blends with HPN in situ. A novel molecular composite was achieved in which toughness and strength were simultaneously improved, as wel…
Abstract An acrylic resin emulsion containing a quaternary ammonium salt (hybrid q ‐chitosan/acrylic resin emulsion) was prepared by emulsion polymerization using an acrylic monomer with and without DAAM. DAAM was used to incorporate a functional keto group into the acrylic resin emulsion. Furthermore, a hybrid chitos…