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Titelei

作者信息未提供1993-04-01Applied Rheology

Hydrogen in polycrystalline diamond: An infrared analysis

B. Dischler、C. Wild、W. Müller-Sebert 等 4 位作者1993-04-01Physica B Condensed Matter

Abstract Hydrogen in polycrystalline diamond (PCD) films has been analysed by infrared spectroscopy. A series of differently prepared PCD films exhibiting considerable differences in the shape of the C-H stretch absorption band has been studied. The spectra are consistently explained by a superposition of lines from s…

Phase Equilibria and ThermodynamicsHigh-pressure geophysics and materialsDiamond and Carbon-based Materials Research

Incorporation of phthalocyanines by cationic and anionic clays via ion exchange and direct synthesis

Kathleen A. Carrado、J. E. Forman、Robert E. Botto 等 4 位作者1993-04-01Chemistry of Materials

Phthalocyanines (Pc) and metallophthalocyanines were incorporated into the galleries of anionic and cationic clays via ion exchange and in situ crystallization of the synthetic clay layers. Intercalation compounds between the layered magnesium silicate clay hectorite and cationic phthalocyanines were directly prepared…

Porphyrin and Phthalocyanine ChemistryElectrochemical Analysis and ApplicationsAnalytical Chemistry and Sensors

Origin, Diagenesis, and Mineralogy of Chlorite Minerals in Devonian Lacustrine Mudrocks, Orcadian Basin, Scotland

Stephen Hillier1993-04-01Clays and Clay Minerals

Abstract Chlorite and corrensite are common clay minerals in lacustrine mudrocks from the Devonian Orcadian Basin, Scotland. The relationship of their occurrence to vitrinite reflectance data demonstrate that they are authigenic minerals, formed during burial diagenesis/metamorphism at temperatures of ≥120°C. Whole ro…

Geological and Geochemical AnalysisClay minerals and soil interactionsGroundwater and Isotope Geochemistry

Introduction to the Rietveld method

R. A. Young1993-04-01OpenAlex

Abstract In Chapter 2, Dr Rietveld has provided an account of the inception and early development of his method and of the growth of its acceptance from being initially ignored to the very widespread and vigorous use in many fields that it now enjoys. In this chapter, we provide a general introductory account of what…

X-ray Diffraction in CrystallographyEnzyme Structure and FunctionAdvanced X-ray Imaging Techniques

Modelling X-ray or neutron scattering spectra of lyotropic lamellar phases : interplay between form and structure factors

Frédéric Nallet、R. Laversanne、D. Roux1993-04-01Journal de Physique II

The lamellar phase of two binary systems, AOT/water and DDAB/water, is studied by X-ray or neutron scattering techniques, along dilution lines. We observe on both systems a large wave vector diffuse scattering with the following features : i) its shape is independent of dilution ; ii) its intensity scales linearly wit…

Surfactants and Colloidal SystemsMaterial Dynamics and PropertiesLiquid Crystal Research Advancements

Enzymatic polyesterification in organic media. Enzyme‐catalyzed synthesis of linear polyesters. I. Condensation polymerization of linear hydroxyesters. II. Ring‐opening polymerization of ϵ‐caprolactone

Dafna Knani、Arie L. Gutman、David H. Kohn1993-04-01Journal of Polymer Science Part A Polymer Chemistry

Abstract With the object to synthesize polyesters by enzymatic catalysis in organic media, two directions have been investigated: (1) the condensation polymerization of linear ω‐hydroxyesters and (2) the ring‐opening polymerization of lactones. The commercially‐available crude porcine pancreatic lipase (PPL), suspende…

Enzyme Catalysis and Immobilizationbiodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical Applications

Nature of Alumina in Phosphate Glass: I, Properties of Sodium Aluminophosphate Glass

Richard K. Brow1993-04-01Journal of the American Ceramic Society

Glasses along four compositional tie lines, I: xAl(PO 3 ) 3 ’(1 – x)NaPO 3 , II: xAlPO 4 ′(1 – x)NaPO 3 , III: xAl 2 O 3 ′(1 – x)NaPO 3 , and IV: xNaAlO 2 ,(1 – x)NaPO 3 , have been prepared and a number of their properties evaluated. In general, Al 2 O 3 additions increase the glass transition temperature, decrease t…

Nuclear materials and radiation effectsGlass properties and applicationsLuminescence Properties of Advanced Materials