Materials Literature
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Luminescence properties are reported for the Eu 2+ -doped materials Ba 2 Mg(BO 3 ) 2, Ba 2 Ca(BO 3 ) 2, and Sr 2 Mg(BO 3 ) 2; they exhibit red, green, and yellow emission, respectively. Results from these materials have been coupled with those from another extensive series of Eu 2+ -doped borates to establish a correl…
Abstract The unsteady‐state kinetics of NH 3 adsorption–desorption and of selective catalytic reduction (SCR) of NO with NH 3 were studied over model V 2 O 5 /TiO 2 and V 2 O 5 –WO 3 /TiO 2 catalysts by transient response techniques. Over both catalysts the dynamic experiments could be successfully described by a kine…
The diesel particulate filter (DPF) technology with the use of fuel additives as regeneration aids is a promising technology for modern and future low-emissions diesel engines. The development of efficient and reliable DPF systems requires understanding of the regeneration process. Although the role of mathematical mo…
Macroscopically oriented silicate−surfactant liquid crystals are produced by slow cooling of lamellar and hexagonal mesophases through their isotropic−anisotropic phase transition in an 11.7 T magnetic field. Comparisons of in situ experimental and simulated 2 H NMR spectra quantify the degrees of orientational order…
Silver and mercury ions are reduced in a common solution by sodium borohydride in the presence of poly(ethyleneimine). Colloidal alloy particles are formed, whose plasmon absorption band is blue-shifted with increasing mercury-to-silver ratio. The reduction mechanism is rather complex: large mercury “drops” are first…
The state of the art in understanding of electromigration induced failure is outlined in the following review. An overview of the basic principles responsible for electromigration in conductors is followed by an explanation of what the consequences of electron flow directed mass transport are in circuit wiring with an…
The ability of clip shaped molecules based on the building block diphenylglycoluril to form complexes with dihydroxybenzene guest molecules has been studied in detail. The binding strength of these complexes can be varied over a wide range ( K a ≈ 0−10 5 M - 1 ), by applying small modifications in the host or the gues…
Other| October 01, 1997 Surface site-specific interactions of aspartate with calcite during dissolution; implications for biomineralization H. Henry Teng; H. Henry Teng Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States Search for other works by this author on: GSW Go…
The breaking thread and the sessile drop methods have been used to evaluate the interfacial tension between a polypropylene (PP) and a polyethylene-terephthalate (PET). An excellent correlation was found between the two. The breaking thread technique was then used to evaluate the interfacial tension of these blends at…
Simulations of translational motion on lattices with spatially heterogeneous dynamics have been performed. Translation occurs by nearest neighbor jumps on a three-dimensional simple cubic lattice. The overall lattice is subdivided into cubic blocks. The rate for jumps within a given block is controlled by the local re…
A new class of crown spirobenzopyrans were designed and synthesized. The crown spirobenzopyrans showed thermally irreversible photochromism only in the presence of alkali-metal cations accompanying cation-selective coloring efficiency. Thus, the new crown spirobenzopyrans could transmit information of two different si…
The characterization of the hepatobiliary contrast agent Gd-EOB-DTPA (gadolinium 3, 6, 9-triaza-3, 6, 9-tris(carboxymethyl)-4-(4-ethoxybenzyl)-undecandicarboxylic acid) in various media (water solution, protein containing solution, phosphorylated metabolites solution, and excised and perfused liver) was performed usin…
Abstract Packaging is important to preserve food quality. It is a barrier to water vapor, gas, aroma, and solute migration between the food and the environment. With the recent increase in ecological consciousness, research has turned toward finding biodegradable materials. The different kinds of biopackaging are disc…
Seven strains of filamentous fungi and one yeast were isolated from flax that was dew retted in the United States. These filamentous fungi were subcultured to purity and identified, and six appear not to have been reported earlier as isolates from dew-retted flax. Five of the purified U.S. strains, two fungi isolated…
2-O-(beta)-Mannosylglycerate, a solute that accumulates in some (hyper)thermophilic organisms, was purified from Pyrococcus furiosus cells, and its effect on enzyme stabilization in vitro was assessed. Enzymes from hyperthermophilic, thermophilic, and mesophilic sources were examined. The thermostabilities of alcohol…
Surface molecular motions of monodisperse polystyrene (PS) films, their binary and ternary blend films, and commercially available polydisperse PS films were investigated on the basis of scanning force microscopic (SFM) measurements at 293 K. The monodisperse PSs were synthesized by a living anionic polymerization. Th…
An electromechanical coupling coefficient is a measure of the effectiveness with which a piezoelectric material (or a device employing such a material) converts the energy in an imposed electrical signal to mechanical energy, or vice versa. There are different kinds of material and device coupling coefficients, corres…
The Escherichia coli degradosome is a multienzyme complex with four major protein components: the endoribonuclease RNase E, the exoribonuclease PNPase, the RNA helicase RhlB and enolase. The first three of these proteins are known to have important functions in mRNA processing and degradation. In this work, we identif…
We explored molecular films of polyionic materials built by electrostatic deposition on a charged surface. Formation of self-assembled monolayers is monitored for poly(styrenesulfonate) (PSS) adsorbed on charged surfaces of amine-terminated self-assembled monolayer (SAM) and poly(allylamine) (PAA) on a PSS monolayer.…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTLiquid Crystal Alignment on Photoreactive Side-Chain Liquid-Crystalline Polymer Generated by Linearly Polarized UV LightNobuhiro Kawatsuki, Hiroshi Ono, Hirohumi Takatsuka, Tohei Yamamoto, and Osamu SangenView Author Information Dep…