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Der Bingham-Medaillenträger / The Bingham Medallist
Generalized atomic displacements in crystallographic structure analysis
An attempt is made to summarize both theoretical and experimental aspects of generalized atomic displacement parameters (ADP's) in crystalline matter. Generalized displacement parameters are used to describe the weakening of Bragg intensities via the anharmonic (static or thermal) Debye–Waller factor (DWF) and its rea…
Pure gold cluster of 1:9:9:1:9:9:1 layered structure: a novel 39-metal-atom cluster [(Ph3P)14Au39Cl6]Cl2 with an interstitial gold atom in a hexagonal antiprismatic cage
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPure gold cluster of 1:9:9:1:9:9:1 layered structure: a novel 39-metal-atom cluster [(Ph3P)14Au39Cl6]Cl2 with an interstitial gold atom in a hexagonal antiprismatic cageBoon K. Teo, Xiaobo Shi, and Hong ZhangCite this: J. Am. Chem. Soc. 1992, 114, 7, 2743–2745Publication Dat…
Grain‐Size‐Dependent Transformation Behavior in Polycrystalline Tetragonal Zirconia
Experimental observations of the tetragonal phase transformation behavior in polycrystalline zirconias and the related toughening contribution are presented. An analysis which considers transformation thermodynamics and residual stresses is developed to describe the influence of grain size on tetragonal‐to‐monoclinic…
Mineral crystals in calcified tissues: A comparative study by SAXS
The shape, the typical orientation, and the average size of mineral crystals in different types of mineralized tissues were investigated by means of small-angle x-ray scattering (SAXS). To rule out eventual artifacts due to sample preparation, four different standard preparation techniques were used and a comparison s…
Potential applications of the boron cluster compounds
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPotential applications of the boron cluster compoundsJaromir PlesekCite this: Chem. Rev. 1992, 92, 2, 269–278Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/cr00010a005https://…
Relaxation processes in supercooled liquids
The characteristic features of alpha - and beta - relaxation in the supercooled state of nonnetwork forming liquids and polymers are reviewed. Particular emphasis is put on properties observed recently by neutron scattering and molecular dynamics studies within the mesoscopic time region. The data indicate the existen…
Magnetoacoustics of ferrites and magnetoacoustic resonance
A review is given of theoretical and experimental papers on the interaction of acoustic waves with spin waves in ferridielectrics. The region of the resonance interaction—the magnetoacoustic resonance (MAR), in which the interaction is synchronous and is most effective, is discussed in greatest detail. Considerable at…
Modern approaches to the preparation of "palladium on charcoal" catalysts
The methods of preparation of deposited palladium catalysts on carbon carriers are discussed. The characteristics of the structures of porous carbon materials, the methods for the regulation of their structural and physicochemical characteristics, the methods for the deposition of palladium on a carbon carrier, and in…
Lifshitz point on the state diagram of ferroelectrics
An analysis is made of the shape of the phase diagrams of substances in the neighborhood of the Lifshitz point, which separates the second-order phase transitions going from the initial phase to a commensurate and to an incommensurate phase. The conclusions of the thermodynamic theory in the mean field approximation a…
Rational Design and Synthesis of New Polymeric Material
Polymers constitute one of the four main areas of materials science. Modern research in polymers focuses on the ways in which tailored macromolecules organize themselves in the solid state and on materials design and synthesis at the interface between polymer science and the fields of ceramics, metals, and electroacti…
Advanced Materials for Aircraft Engine Applications
A review of advances for aircraft engine structural materials and processes is presented. Improved materials, such as superalloys, and the processes for making turbine disks and blades have had a major impact on the capability of modern gas turbine engines. New structural materials, notably composites and intermetalli…
Innovative Materials Processing Strategies: a Biomimetic Approach
Many organisms construct structural ceramic (biomineral) composites from seemingly mundane materials; cell-mediated processes control both the nucleation and growth of mineral and the development of composite microarchitecture. Living systems fabricate biocomposites by: (i) confining biomineralization within specific…
Crystallization of Nucleic Acids and Proteins
Abstract In the last decade crystallography has emerged as a key tool for understanding the structures of biological macromolecules, yet the crystallization techniques themselves have been perceived as difficult to perform. This book provides the first detailed and rational guide to producing crystals of proteins and…
Kinetics of BaSO4 Crystal Growth and Effect in Formation Damage
Abstract In the North Sea, due to the extensive use of water injection for oil displacement and pressure maintenance, many reservoirs experience the problem of scale deposition when injection water starts to breakthrough. In most cases the scaled-up wells are caused by the formation of sulphate scales of Barium and St…
Syntheses and reactions of urethanes of cellobiose and cellulose‐containing uretdione groups
Abstract Urethanes of cellobiose and cellulose‐containing uretdione groups are synthesized by the reaction of aliphatic and aromatic diisocyanate uretdiones with the saccharides. The syntheses are performed as a heterogeneous reaction in dimethyl acetamide using dibutyl tin dilaurate as a catalyst, as well as a homoge…
Injection‐moulded blends of a thermotropic liquid crystalline polymer with polyethylene terephthalate, polypropylene, and polyphenylene sulfide
Abstract The properties of various blends of a polyester‐type thermotropic liquid crystalline polymer (LCP) with polyethylene terephtalate, polypropylene, and polyphenylene sulfide were investigated. The polymers were blended in a twin screw extruder after which samples were injection moulded. The mechanical propertie…
The introduction of alkyl, ester, carboxylate, amino, hydroxyl, and phosphate functional groups to the surface of polyethylene
Abstract The surface of polyethylene was derivatized with ester, carboxylate, amino, hydroxyl, and phosphate functional groups. α, ω bifunctional alkanes, containing on one end a primary amine, were coupled to oxidized polyethylene through an amide linkage. Polyethylene was first oxidized with chromic acid, the carbox…