Maciej J. Kotarba、Jan Środoń2000-04-01Clay Minerals
Abstract The MudMaster computer program, based on the modified Bertaut-Warren- Averbach (BWA) XRD method, was used in the study of diagenetic evolution of illitic material in shales. The illitic material was characterized by XRD as a mixture of illite-smectite (I-S) and discrete illite. The experimental conditions for…
Geological and Geochemical AnalysisSoil and Unsaturated FlowClay minerals and soil interactions
Cristina Siligardi、Maria Cristina D'Arrigo、Cristina Leonelli 等 5 位作者2000-04-01Journal of the American Ceramic Society
This paper reports results that show the effect of microwave absorption on the bulk crystallization of two glasses in the CaO—ZrO 2 —SiO 2 system. The glass samples were devitrified using either microwave or conventional heating, to compare the results obtained from the two different techniques. Remarkably different c…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsMicrowave Dielectric Ceramics Synthesis
Shinichi Kato、Hidero Unuma、Toshitaka Ota 等 4 位作者2000-04-01Journal of the American Ceramic Society
Hydrous tin oxide powders were precipitated at room temperature via the neutralization of sodium stannate with gluconic acid. The gluconic acid was generated by the oxidation of glucose, with the assistance of a glucose oxidase/catalase system. The hydrous tin oxide, which had a large surface area, was obtained when a…
Mesoporous Materials and CatalysisPolyoxometalates: Synthesis and ApplicationsCatalysis and Oxidation Reactions
R. A. Johnson、Ali Borhan2000-04-01Physics of Fluids
We examine the effect of surfactants on the evolution of the shape of an initially nonspherical drop translating in an otherwise quiescent fluid at low Reynolds number. A combination of the boundary-integral method and a finite-difference scheme is used to solve the coupled fluid dynamics and surfactant transport prob…
Surface Modification and SuperhydrophobicityFluid Dynamics and Heat TransferPickering emulsions and particle stabilization
Peter Eaton、Paul A. Holmes、J. Yarwood2000-04-01Applied Spectroscopy
We have combined attenuated total reflectance/Fourier transform infrared (ART/FT-IR) and Raman microscopy to examine the diffusion rates and redistribution profiles of three different silane adhesion coupling agents into plasticized and unplasticized PVC. Below the glass transition temperature ( T g ) of the polymer,…
Polymer crystallization and propertiesConducting polymers and applicationsLuminescence and Fluorescent Materials
Jia‐Min Lin、M. Chen‐Chi、Nyan‐Hwa Tai 等 5 位作者2000-04-01Polymer Composites
Abstract Phenolic/silica ceramers were prepared by the sol‐gel method. Carbon fiber reinforced phenolic/silica ceramer composites with high thermal resistance were fabricated. Tetraethyl orthosilicate (TEOS) was used as a monomer for sol‐gel system. Different ratios of the sol‐gel solutoins and phenolic resins were ad…
Synthesis and properties of polymersAerogels and thermal insulationSilicone and Siloxane Chemistry
Ana E. Bohé、Julio J. Andrade Gamboa、Daniel M. Pasquevich 等 5 位作者2000-04-01Journal of the American Ceramic Society
The microstructure of ZrO 2 fine particles produced by a novel synthesis method at 450° and 950°C has been studied. The fundamentals of the synthesis method, which involves both chemical and diffusion phenomena, are presented. The method is based on mass transport through the gaseous phase between metallic zirconium a…
Advanced ceramic materials synthesisNuclear Materials and PropertiesAdvanced materials and composites
P. P. Semyannikov、Tamara V. Basova、V. M. Grankin 等 4 位作者2000-04-01Journal of Porphyrins and Phthalocyanines
Mass spectrometric studies of the composition of the gaseous phase under solid compounds of free phthalocyanine ( H 2 Pc ) and its complexes with aluminium ( AlClPc , AlFPc , ( AlPc ) 2 O ) and copper ( CuPc ) were performed in the temperature range up to 700 °C. It has been shown that the phthalocyanines sublime in t…
Porphyrin and Phthalocyanine ChemistryPhotodynamic Therapy Research StudiesPhotochemistry and Electron Transfer Studies
Walter C. Phillips、Martin Stanton、Alexander Stewart 等 6 位作者2000-04-01Journal of Applied Crystallography
A charge-coupled device (CCD)-based detector designed for macromolecular crystallography is described. The detector has an area of 200 × 200 mm, a readout time of 1.6 s, and total noise equivalent to approximately three 12 keV X-ray photons per pixel. The detector is constructed from a 2 × 2 array of four identical un…
Enzyme Structure and FunctionAdvanced X-ray Imaging TechniquesX-ray Spectroscopy and Fluorescence Analysis
Takafumi Kitazawa、Misako Eguchi、Masuo Takeda2000-04-01Molecular crystals and liquid crystals science technology. Section A, Molecular crystals and liquid crystals/Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals
Two-dimensional coordination polymer compounds FeL2Ni(CN)4 (L: 2, 3, or 4-methylpyridine) have been synthesized and characterized by single crystal X-ray diffraction method.
Metal-Organic Frameworks: Synthesis and ApplicationsMagnetism in coordination complexesLanthanide and Transition Metal Complexes
O.V. Mishin、E.M. Lauridsen、Niels Christian Krieger Lassen 等 8 位作者2000-04-01Journal of Applied Crystallography
A novel experimental technique that employs high-energy synchrotron radiation is used for the investigation of through-thickness texture gradients in two aluminium plates, cold-rolled 40% with either intermediate or small draughts. In these two plates, crystallographic textures are inspected in a large number of layer…
Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of SteelsX-ray Diffraction in Crystallography
Alexander McPherson2000-04-01Journal of Applied Crystallography
A method is proposed, and preliminary experiments are described, for collection of X-ray data from macromolecular crystals in situ . The usual processes of mounting for either room-temperature or cryogenic X-ray data collection are eliminated by growing crystals, using vapor diffusion, on small supports or films that…
Protein Structure and DynamicsMass Spectrometry Techniques and ApplicationsEnzyme Structure and Function
Devang Shah、Minhtien Tran、Pierre Berger 等 7 位作者2000-04-01Macromolecules
This paper describes the biosynthesis and properties of bacterial poly(hydroxyalkanoate)s (PHA) with predominantly hydroxyl end groups. Hydroxy termination is achieved by the addition of low molecular weight diols to the culture. It is found that low molecular weight diols of various structures can be easily incorpora…
biodegradable polymer synthesis and propertiesElectrospun Nanofibers in Biomedical ApplicationsCarbon dioxide utilization in catalysis
Jacques Rappaz、Jean-François Scheid2000-04-01Mathematical Methods in the Applied Sciences
We investigate the well-posedness of a phase-field model for the isothermal solidification of a binary alloy due to Warren–Boettinger [12]. Existence of weak solution as well as regularity and uniqueness results are established under Lipschitz and boundedness assumptions for the non-linearities. A maximum principle ho…
Metallic Glasses and Amorphous AlloysAluminum Alloy Microstructure PropertiesSolidification and crystal growth phenomena
Fristina Rahma、S. Fellahi2000-04-01Polymer Composites
Abstract A polymeric coupling agent acrylic acid grafted polypropylene (AAgPP) was synthesized and its efficiency in CaCO 3 /PP composite was investigated. The grafting of acrylic acid monomer (AA) onto polypropylene was performed using an internal mixer. The effect of peroxyde, acrylic acid monomer content, temperatu…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesNatural Fiber Reinforced Composites
S. Brochard、P. Beauchamp、J. Grilhé2000-04-01Physical review. B, Condensed matter
In a previous static atomistic simulation, it has been shown unambiguously that a surface step is a privileged site for dislocation nucleation. Before dislocation nucleation, an elastic shear, localized in the plane in zone with the step where nucleation will occur, is observed. The real dislocation forms when this lo…
Microstructure and mechanical propertiesMetal and Thin Film MechanicsAluminum Alloy Microstructure Properties
A. N. Morozov、A. V. Zvelindovsky、J. G. E. M. Fraaije2000-04-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We generalize the earlier theory by Fredrickson [J. Rheol. 38, 1045 (1994)] to study the orientational behavior of the hexagonal phase of diblock copolymer melt subjected to steady shear flow. We use symmetry arguments to show that the orientational ordering in the hexagonal phase is a much weaker effect than in the l…
Theoretical and Computational PhysicsRheology and Fluid Dynamics StudiesBlock Copolymer Self-Assembly
M. C. Burla、Benedetta Carrozzini、G. Cascarano 等 5 位作者2000-04-01Journal of Applied Crystallography
Crystal structure solution in P 1 may be particularly suitable for complex crystal structures crystallizing in other space groups. However, additional efforts and human intervention are often necessary to locate correctly the structural model so obtained with respect to an allowed origin of the actual space group. An…
Enzyme Structure and FunctionCrystallization and Solubility StudiesX-ray Diffraction in Crystallography
V. M. Pergamenshchik2000-04-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We study the effect of the divergence (surfacelike) K24 and K13 terms on stability of the uniform ground state of a nematic phase. It is shown that the K13 term can effectively boost the action of the K24 term. As a result, even if the two Ericksen stability conditions are satisfied, spontaneous deformations can occur…
Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsAdvanced Materials and Mechanics
Giacomo Certini、Giuseppe Corti、F. C. Ugolini2000-04-01Journal of Plant Nutrition and Soil Science
Low-molecular-weight organic acids (LMWOA's) play an important role in soil genesis and plant physiology. Oxalic acid is one of the more common and abundant LMWOA's in forest soils, where it accumulates especially as salts of Ca. In two soils under silver fir (Abies alba Mill.) from Tuscany, Italy, we measured the oxa…
Soil Carbon and Nitrogen DynamicsSoil and Unsaturated FlowClay minerals and soil interactions