Materials Literature
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The electrochemical properties of the interface between Ni and yttria-stabilized zirconia (YSZ) in the H 2 H 2 O Ni YSZ electrode have been investigated in order to obtain knowledge on the effect of segregation of impurities to the electrode-electrolyte interface on performance. Even for a relatively pure nickel…
This paper proposes a simple, practical PSPICE model of a three-phase, three-legged, saturated transformer with accurate performance. The transformer is modeled with its electric and magnetic equivalent circuits and a simple but reliable characterization of its nonlinear magnetic behavior. Two three-phase transformers…
Oxygen plasma-treated quenched and annealed polypropylene (PP) films with different crystallinities were investigated to characterize the surface rearrangement behavior during aging using contact-angle measurements and X-ray photoelectron spectroscopy. Optimum plasma conditions were examined by varying the power, time…
Abstract This review describes nuclear waste forms for high-level waste (HLW), that is, glasses, ceramics, and glass-ceramics, as well as for low- and intermediate-level waste (LILW), that is, cement, bitumen, glass, glassy slags, and ceramics. Ceramic waste forms have the highest chemical durability and radiation res…
The coordinating chemistry of lanthanides, relevant to the biological, biochemical and medical aspects, makes a significant contribution to understanding the basis of application of lanthanides, particularly in biological and medical systems. The importance of the applications of lanthanides, as an excellent diagnosti…
Characterization and control of the mechanical properties of the extracellular matrix are critical to the interpretation of results of in vitro studies of cultured tissues and cells and for the design of functional engineered constructs. In this work a viscoelastic tensile test system and custom culture chambers were…
This article describes a number of important recent microscopy tools and their application in particular to the study of porous inorganic materials. The authors believe that these new techniques are on the threshold of delivering enormous new power in the chemist's arsenal for understanding new and complex behaviour i…
Author: Reuter, Karsten et al.; Genre: Journal Article; Issued: 2004-02-03; Open Access; Title: Oxide formation at the surface of late 4d transition metals: insights from first-principles atomistic thermodynamics
Dendrimers are highly branched macromolecules which may engage in host-guest interactions, acting as either hosts or guests; this review is specifically concerned with the binding behavior of dendrimers containing single or multiple guest residues interacting with individual, freely diffusing hosts.
Fillers are used along with various commodities as well as engineering polymers to improve the properties of polymers. The performance of filled polymers is generally determined on the basis of the interface attraction of filler and polymers. Fillers of widely varying particle size and surface characteristics are resp…
Novel hollow nanoshells of Mn(2)O(3) with controllable ultrathin shell thickness have been fabricated through layer-by-layer assembly of exfoliated MnO(2) nanosheets and polyelectrolytes on polymer bead templates, followed by removal of the polymer cores via calcination.
Reaction of aqueous/ethanolic solutions of CoCl2.6H2O and nitrilotripropionic acid (H3ntp=N(CH2CH2COOH)3) in the presence of potassium hydroxide affords the hydroxy-bridged tetranuclear cluster [Co4mu3-OH)2(H2O)6(ntp)2].2H2O (1). The Ni(II) analogue [Ni4(mu3-OH)2(H2O)6(ntp)2].2H2O (2) can also be isolated using aqueou…
The effect of chitosan on Saccharomyces cerevisiae (the yeast that carries out alcohol fermentation), Brettanomyces bruxellensis and Brettanomyces intermedius (contaminants of alcohol fermentations), was investigated. The effect of chitosan was tested on each yeast, as well as on mixed cultivations of S. cerevisiae +…
The TCNE22− π-dimer has many of the characteristics of a chemical bond despite its remarkably long (2.9 Å) C–C bondlength, as it exists in crystalline solids. Using computational methods, we examine the nature of this long bond by obtaining potential energy curves that are, for the first time, in satisfactory agreemen…
In this study, the synthesis of nanostructured particles of nitrides (Cr2N, Co2N, Fe4N, Cu3N, Ni3N), metal (Cu) and oxides (Al2O3, TiO2, Ga2O3) by using supercritical ammonia in the reaction medium is described. The elaboration process is based on the thermal decomposition of metal precursors in a supercritical ammoni…
Using first-principles molecular dynamics, we investigate the interactions of water with the (0001) α-quartz surface. Both the cleaved (unreconstructed) surface, which presents non-bridging oxygen atoms, and the dense surface, which is characterized by 3-membered and 6 membered-rings with siloxane bonds at the top, ar…
Dynamical heterogeneities in a colloidal fluid close to gelation are studied by means of computer simulations. A clear distinction between some fast particles and the rest, slow ones, is observed yielding a picture of the gel composed of two populations with different mobilities. Analyzing the statics and dynamics of…
Abstract The common claim that dolomitization creates 12% porosity is based on the mole-for-mole replacement equation. However, in the past 50 years, data have been collected demonstrating that dolomitization does not create porosity. Instead, dolostones inherit the porosity and fabric of the precursor limestone, and…
We develop a conservative, second order accurate fully implicit discretization of ternary (three-phase) Cahn-Hilliard (CH) systems that has an associated discrete energy functional.This is an extension of our work for two-phase systems [13].We analyze and prove convergence of the scheme.To efficiently solve the discre…
The origins of persistent interactions among localized corrosion sites were investigated using multielectrode arrays (MEA). MEAs consisted of one hundred 250 μm diam AISI 316 stainless steel wires configured into close-packed rectangle and far-spaced configurations. Experiments were conducted in dilute chloride soluti…