Georgios A. Spyroulias、Catherine P. Raptopoulou、Dominique de Montauzon 等 7 位作者1999-04-01Inorganic Chemistry
The synthesis, spectroscopic characterization, and electrochemical study of eleven heteroleptic and their corresponding homoleptic lanthanide sandwiches are reported. Studies in solution have been carried out in solvents of different basicity, in order to elucidate the equilibrium between the protonated and deprotonat…
Metal complexes synthesis and propertiesPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation Mechanisms
Tae Jin Kang、Dae Hwan Cho、Hyun Suk Whang1999-04-01Textile Research Journal
A new objective method for evaluating fabric wrinkles involves a 3-D projecting grid technique based on image processing. The uniform grid is projected on the AATCC replica surface, and then the gridded image of each replica is captured by the image capturing system. Noise reduction and extraction of the horizontal fe…
Optical measurement and interference techniquesTextile materials and evaluationsColor Science and Applications
T. Ungár、Matteo Leoni、Paolo Scardi1999-04-01Journal of Applied Crystallography
Anisotropic strain broadening in X-ray or neutron powder diffraction can cause severe difficulties in whole powder-pattern fitting and Rietveld structure refinement. Several phenomenological models have been proposed to deal with this problem. These, however, lack physically sound bases. In the present work the disloc…
Nuclear materials and radiation effectsX-ray Diffraction in CrystallographyCrystallography and Radiation Phenomena
Meiyun He、Guofu Wang、Zhoubin Lin 等 6 位作者1999-04-01Materials Research Innovations
The compound β-LaSc3(BO3)4 crystallizes in the rhombohedral with space group R32 and cell parameters a=9.819(3), c=7.987(1) Å, Z=3, V=666.5(3) Å3, Dc=3.80 g/cm3, λ(MoKβ)=0.71067 Å, F(000)=708, final R=0.053. RW=0.072 for 512 observed reflection with I≥3σ(I). The La atoms, Sc atoms and B atoms occupy trigonal prisms, o…
Nuclear Materials and PropertiesInorganic Chemistry and MaterialsElectronic and Structural Properties of Oxides
N. Boden、Richard J. Bushby、Zhou Lü 等 4 位作者1999-04-01Liquid Crystals
Cyano groups have been introduced into alkoxytriphenylene-based mesogens by bromination followed by treatment with copper(I) cyanide. The introduction of cyano substitutents enhances the mesophases ranges.
Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsMesoporous Materials and Catalysis
P. Harris1999-04-01Interdisciplinary Science Reviews
This article considers the ways in which humankind has made use of charcoal down the ages, as a fuel, as an artistic material, and as an adsorbent. The scientific study of charcoal's structure is discussed, and the role played by Rosalind Franklin highlighted. Current ideas on the structure of charcoal are summarised.
Carbon Nanotubes in CompositesPolymer crystallization and propertiesPolymer Nanocomposites and Properties
D. Robinson、Azucena Zamora1999-04-01American Mineralogist
Clay mineralogical X-ray diffraction and electron microprobe studies have been carried out on separated <2 μm fractions from cutting and core material from three wells in the Chipilapa geothermal system in El Salvador. The data indicate that the smectite to chlorite transition is prevalent, but a secondary smectite…
Clay minerals and soil interactionsIron oxide chemistry and applicationsTherapeutic Uses of Natural Elements
Cheng Dong、H. Chen、Feng Wu1999-04-01Journal of Applied Crystallography
This paper presents a new algorithm to remove the Cu K α 2 profile in X-ray powder diffraction patterns. Previous algorithms for α 2 elimination can be divided into two categories. The first category assumes the shape identity of the α 1 and α 2 components. The second category uses parameters by fitting experimental d…
Metallurgical Processes and ThermodynamicsX-ray Spectroscopy and Fluorescence AnalysisX-ray Diffraction in Crystallography
Zhuang L. Boynton、Joseph J. Koon、Elaine M. Brennan 等 7 位作者1999-04-01Applied and Environmental Microbiology
Poly(3-hydroxyalkanoates) (PHAs) are biodegradable thermoplastics which are accumulated by many bacterial species in the form of intracellular granules and which are thought to serve as reserves of carbon and energy. Pseudomonas putida accumulates a polyester, composed of medium-side-chain 3-hydroxyalkanoic acids, whi…
biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionBiopolymer Synthesis and Applications
Sunglae Cho、A. DiVenere、George K. Wong 等 5 位作者1999-04-01Journal of Applied Physics
In order to understand the doping behavior of extremely narrow band gap materials and to optimize their characteristics for use in a thermoelectric module, we performed n- and p-type doping experiments on semiconducting Bi0.91Sb0.09 alloy thin films using the group VI(IV) element Te(Sn) as donor (acceptor). Thermoelec…
Advanced Thermoelectric Materials and DevicesAdvanced Thermodynamics and Statistical MechanicsThermal Radiation and Cooling Technologies
Ruxandra Gref、G. Miralles、E. Dellacherie1999-04-01Polymer International
Polylactic acid (PLA) nanospheres coated with monomethoxypolyoxyethylene (MPOE) were prepared from amphiphilic diblock copolymers (MPOE-PLA) by an emulsion–evaporation procedure in the presence of sodium cholate as surfactant. Nanospheres with various concentrations of MPOE at their surface and various MPOE molar mass…
Nanoparticle-Based Drug DeliverySurfactants and Colloidal SystemsPolymer Surface Interaction Studies
Christine C. Dupont‐Gillain、Bernard Nysten、Paul G. Rouxhet1999-04-01Polymer International
Collagen adsorbed on poly(methyl methacrylate) (PMMA) was investigated using X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and water contact angle measurement, after either fast drying or slow drying. Quantification by XPS of the amount of adsorbed collagen is shown to be influenced by the dryi…
Surface Modification and SuperhydrophobicityPolymer Surface Interaction StudiesAdhesion, Friction, and Surface Interactions
N. Dingenouts、Matthias Ballauff1999-04-01Langmuir
The packing of latex spheres achieved in the first step of film formation is considered. The latexes consisting of PMMA or poly(styrene) particles were dried at temperatures far below the glass temperature of both materials. The weight-average diameters were between 69 and 106 nm whereas the standard deviation of the…
Polymer crystallization and propertiesMaterial Dynamics and PropertiesPolymer Nanocomposites and Properties
Roberto Bao、Maria da Codnceição Freitas、César Andrade1999-04-01The Holocene
Diatom and sedimentological analyses of a 7.6-m core of the Albufeira coastal lagoon, western Portugal, provide information about the forcing factors and environmental history of the evolution of this lagoon during the last 2500 years. At this timescale, eustasy is considered to be a minor environmental control on the…
Geology and Paleoclimatology ResearchMarine and coastal ecosystemsDiatoms and Algae Research
Jochen Friedrich、Y.-S. Lee、B.E. Fischer 等 6 位作者1999-04-01Physics of Fluids
In the present paper we experimentally study the effects of a rotating magnetic field (RMF) on the fluid flow in an electrically conducting melt (Gallium), kept in a cylindrical container heated from below (Rayleigh-Bénard configuration). The experimental data are compared to results obtained from three-dimensional, t…
Fluid Dynamics and Turbulent FlowsSolidification and crystal growth phenomenaMetallurgical Processes and Thermodynamics
Ignacio Pagonabarraga、M. H. J. Hagen、C. P. Lowe 等 4 位作者1999-04-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We analyze the short-time dynamical behavior of a colloidal suspension in a confined geometry. We analyze the relevant dynamical response of the solvent, and derive the temporal behavior of the velocity autocorrelation function, which exhibits an asymptotic negative algebraic decay. We are able to compare quantitative…
Fractional Differential Equations SolutionsMaterial Dynamics and PropertiesAdvanced Thermodynamics and Statistical Mechanics
Yiwen Luo、Ignace Verpoest1999-04-01Polymer Composites
Abstract In liquid composite molding, such as RTM or SRIM, the dry reinforcement is first compressed in the mold, and then the resin is injected into the mold cavity and cured. Knowledge of the compressibility of the reinforcement is important in order to estimate the mold closing force and the attainable range of fib…
Mechanical Behavior of CompositesTextile materials and evaluationsMaterial Properties and Processing
J.-J. Park、Su‐Il Pyun、W.-J. Lee 等 4 位作者1999-04-01CORROSION
The effect of bicarbonate ions (HCO3−) on pitting corrosion of type 316L stainless steel (SS, UNS S31603) was investigated in aqueous 0.5 M sodium chloride (NaCl) solution using potentiodynamic polarization, the abrading electrode technique, alternating current (AC) impedance spectroscopy combined with x-ray photoelec…
Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques
Yutaka Tokiwa、Mariko Konno、Haruo Nishida1999-04-01Chemistry Letters
Abstract To examine a hypothesis that microorganisms regard poly(l-lactide) (PLLA) as a protein substrate like silk, a silk-utilizing actinomycete, Amycolatopsis sp. strain KT-s-9, was isolated. The strain KT-s-9 was confirmed to degrade and utilize silk fibroin rapidly. By the clear zone method, it was determined tha…
biodegradable polymer synthesis and propertiesEnzyme Production and CharacterizationSilk-based biomaterials and applications
Masafumi Unno、Shamsul Bahri Alias、Miwako Arai 等 6 位作者1999-04-01Applied Organometallic Chemistry
Synthesis of cage and ladder silsesquioxanes by the dehydration of silanols using dicyclohexylcarbodiimide (DCC) is described. The reaction of 1,3-dicyclohexyldisiloxane-1,1,3,3-tetraol with DCC gave octa(cyclohexylsilsesquioxane) in 13% yield. The bicyclic ladder siloxane 3 (Ph 8 Thex 2 Si 6 O 7 ) was prepared from 1…
Metal and Thin Film MechanicsSynthesis and characterization of novel inorganic/organometallic compoundsSilicone and Siloxane Chemistry