Materials Literature
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Die Tonminerale heben sich durch eine Vielfalt von Reaktionen von allen anderen Mineralen und anorganischen Feststoffen abo Als wichtigste Bestandteile der Tone verleihen sie diesen die besonderen Eigenschaften, die die Menschen in ihren frfiheren Kulturen als Bau-und Gefrulmaterial auszunutzen wuBten. Heute haben die…
Refluxing mixed solutions of palladium(II) chloride and hexachloroplatinic(IV) acid in ethanol–water (1 : 1, v/v) in the presence of poly(N-vinyl-2-pyrrolidone) results in well dispersed and stable colloidal dispersions of polymer-protected palladium/platinum bimetallic clusters. The UV–VIS absorption spectra and tran…
For a long time, classification of partial discharges was performed by eye, by studying discharge patterns at the ellipse of an oscilloscope screen. The introduction of digital processing techniques allowed automation of the recognition procedure. These procedures are reported and applied to a number of actual HV cons…
Reviews surface flashover of insulator, primarily in vacuum, although some comments are made about the effect of ambient gases on surface flashover. It presents theoretical mechanisms of surface flashover and pertinent experimental results. The holdoff voltage of insulators depends upon many insulator parameters, such…
All articles of this category 4,5-Dichloro-1,2-dicyanobenzene (5) was prepared in an overall yield of 49% from 4,5-dichloro-1,2-benzenedicarboxylic acid (1) . The reactions of 5 with phenols, thiophenol and 1-propanethiol led in a nucleophilic displacement reaction to the 4,5-bis(aryloxy)-,4, 5-bis(phenylthio)-and 4,5…
The study of metallic melts, their physical properties, and their solidification behaviour is of relevance to understanding of fundamental principles and to metallurgical applications. Many, if not most, of these properties are extremely sensitive to contamination of the melt by impurities. Consequently, containerless…
Appropriate surface modification has significantly improved the blood compatibility of polymeric biomaterials. This article reviews methods of surface modification with water-soluble polymers, such as polyethylene oxide (PEO), albumin, and heparin. PEO is a synthetic, neutral, water-soluble polymer, while albumin and…
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermodynamic modeling of hydrothermal synthesis of ceramic powdersMalgorzata M. Lencka and Richard E. RimanCite this: Chem. Mater. 1993, 5, 1, 61–70Publication Date (Print):January 1, 1993Publication History Published online1 May 2002Published inissue 1 January 1993https://…
Over the past seven years, many examples of periodic crystals closely related to quasicrystalline alloys have been discovered. These crystals have been termed approximants, since the arrangements of atoms within their unit cells closely approximate the local atomic structures in quasicrystals. This colloquium focuses…
PREFACE Electrochemical Engineering may be defined as understanding and development of practical materials and processes which involve electrochemical reactions The discipline includes electrochemical methods of synthesis, process recycling, energy conversion and materials protection. Moreover, its importance must gro…
Kinases that catalyze phosphorylation of sugars, called here sugar kinases, can be divided into at least three distinct nonhomologous families. The first is the hexokinase family, which contains many prokaryotic and eukaryotic sugar kinases with diverse specificities, including a new member, rhamnokinase from Salmonel…
This outstanding reference provides a comprehensive discussion of magnetoelasticity based on three accepted descriptions of magnetostriction: elastomagnetic matrices, a group symmetrical description, and a tensor formalism. It explores recent advances that rely mainly on Callen's work and emphasizes the influence of t…
Abstract We have made additional evaluations of the electron inelastic mean free paths (IMFPs) and of the predictive IMFP formula TPP‐2 presented in papers II and III of this series. Comparisons have been made with other formulae for the IMFPs and electron attenuation lengths (ALs). We find substantial differences bet…
The synthesis of dendritic polyether macromolecules based on a 3, 5-dihydroxybenzyl alcohol building block and having carboxylate groups as chain-ends is described. These novel macromolecules behave as unimolecular micelles and their ability to solvate hydrophobic molecules has been investigated by UV–VIS spectroscopy…
This text aims to bring together accepted concepts on the molecular structure, fine structure and morphology of cellulose, and to examine the interrelation between the structure and the accessibility of fibrous cellulose substrates.
Compositions of modern first-cycle sands derived from granitic and metamorphic terrains in the Spanish Central System have been analyzed in order to evaluate the contributions of different bedrock types. The results of this work indicate that sand composition normally does not permit quantitative statements concerning…
Microkinetic Analysis and Catalytic Reaction Synthesis Microkinetic Analysis The Supporting Role of Empirical Information Informative Experiments Ethylene Hydrogenation Catalyzed by Platinum Ammonia Synthesis Catalyzed by Iron Ethane Hydrogenolysis Catalyzed by Group VIII Metals Methane Oxidation Catalyzed by Molybden…
Described as THE classic text on magnetism, FERROMAGNETISM covers the basics of magnetics, as well as in-depth coverage of magnetic materials. IEEE Press has now brought this important cornerstone of magnetics research back into print. Recognized for its breadth of coverage, this book includes information on magnetic…
Magnesium alloys have high strength/weight ratios, but poor corrosion resistance affects the viability of increased magnesium usage in aerospace and other applications. This review approaches the problem of magnesium corrosion from the standpoint of corrosion science by discussing the thermodynamics, kinetics, and mic…