Nina Lundholm、Grethe Rytter Hasle、Greta A. Fryxell 等 4 位作者2002-09-01Phycologia
Pseudo-nitzschia americana and the two closely related species P. brasiliana Lundholm, Hasle & G.A. Fryxell sp. nov. and P. linea Lundholm, Hasle & G.A. Fryxell sp. nov. are described, based on morphology. The phylogenetic positions of P. americana and P. brasiliana are inferred from partial nuclear-encoded large-subu…
Aquatic Ecosystems and Phytoplankton DynamicsDiatoms and Algae Research
Wenru Zeng、Shunfang Li、W. K. Chow2002-09-01Journal of Fire Sciences
Chemical reactions of burning Poly(methyl methacrylate) (PMMA) are reviewed in this paper although kinetics of thermal decomposition are believed to be fairly simple. Basically, there are three stages in the combustion of PMMA. Firstly, PMMA decomposes to produce monomer methyl methacrylate (MMA). Secondly, monomer MM…
Fire dynamics and safety researchFlame retardant materials and propertiesThermal and Kinetic Analysis
Hans-Detlef Luginsland、Joachim Fröhlich、André Wehmeier2002-09-01Rubber Chemistry and Technology
Abstract The silane modification of precipitated silica for rubber applications is state-of-the-art. Usually, bifunctional silanes are used to provide a silica-to-rubber coupling. In this paper, the general effect of the silane modification on the Payne-effect of silica-filled compounds (S-SBR/BR) is investigated by a…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesLubricants and Their Additives
S. M. Rossnagel、I. C. Noyan、C. Cabral2002-09-01Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena
Thin films of W have application in semiconductor interconnect structures as diffusion barriers and potentially as seed layers for electroplating. Thin W films have been deposited by sputtering [physical vapor deposition (PVD)] at near-room temperature, using Ar as the working gas, for evaluation of the electrical and…
Metal and Thin Film MechanicsCopper Interconnects and ReliabilitySemiconductor materials and interfaces
Kengo Kishimoto、T. Koyanagi2002-09-01Journal of Applied Physics
Sintered degenerate n-type PbTe samples with small grain sizes ranging from 0.7 to 4 μm were prepared and the effects of grain size on their thermoelectric properties were then investigated. The Seebeck coefficient of the sintered samples increased almost double when the grain size decreased from 4 to 0.7 μm. On the o…
Advanced Thermoelectric Materials and DevicesTopological Materials and PhenomenaPhase-change materials and chalcogenides
A. Sozinov、A.A. Likhachev、K. Ullakko2002-09-01IEEE Transactions on Magnetics
Several kinds of martensitic phases have been found in nonstoichiometric Ni/sub 2/MnGa alloys in numerous recent studies. The structural, magnetic, and mechanical properties important for a giant magnetic-field-induced strain response in these alloys are presented. Depending on the martensite crystal structure Ni-Mn-G…
Microstructure and Mechanical Properties of SteelsShape Memory Alloy TransformationsMagnetic Properties and Applications
John B. Goodenough2002-09-01IEEE Transactions on Magnetics
Current concepts of the physical origin and mechanisms of losses in magnetic materials are reviewed under three traditional categories: hysteresis losses, eddy-current or dielectric losses, and residual losses. The phenomenological Landau-Lifshitz equation is used to quantitatively express the various manifestations o…
Magnetic properties of thin filmsMagnetic and transport properties of perovskites and related materialsMagnetic Properties and Applications
S. A. Prosandeev2002-09-01arXiv
An analytical result has been obtained for the value of the dynamical charge necessary for calculations of oxygen vacancy kinetics in dielectric perovskite-type crystals. It is shown by using the Berry phase analysis that this charge equals the nominal charge of the vacancy: for example, for the double charged state,…
Materials Science
Anne Charrier、Alessandro Coati、T. S. Argunova 等 10 位作者2002-09-01Journal of Applied Physics
Using grazing-incidence x-ray diffraction and scanning tunneling microscopy (STM), we show that the thermal decomposition of an electronic-grade wafer of 6H-SiC after annealing at increasing temperatures TA between 1080 and 1320 °C leads to the layer-by-layer growth of unconstrained, heteroepitaxial single-crystalline…
Graphene research and applicationsSilicon Carbide Semiconductor TechnologiesSemiconductor materials and interfaces
M. Grossmann、O. Lohse、D. Bolten 等 6 位作者2002-09-01Journal of Applied Physics
Comprehensive imprint measurements on PbZrxTi1−xO3 (PZT) thin films were carried out. Different models, which were proposed in literature to explain imprint in ferroelectric thin films or a similar aging effect (internal bias) in ferroelectric bulk material, are reviewed. Discrepancies between the experimental results…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesFerroelectric and Negative Capacitance Devices
Yuanyuan Lei、Yasuo Ito、Nigel D. Browning 等 4 位作者2002-09-01Journal of the American Ceramic Society
The atomic‐scale structure, composition, and chemistry of grain boundaries in two fluorite‐structured ceramic materials were characterized by a combination of Z ‐contrast imaging and electron energy‐loss spectroscopy (EELS). In the case of a symmetric 24° [001] tilt bicrystal of yttria‐stabilized‐zirconia (YSZ), a shi…
Nuclear Materials and PropertiesNuclear materials and radiation effectsElectronic and Structural Properties of Oxides
P Scheidler、W Kob、K Binder2002-09-01Europhysics Letters (EPL)
Using molecular-dynamics simulations we investigate the relaxation dynamics of a supercooled liquid close to a rough as well as to a smooth wall. For the former situation the relaxation times increase strongly with decreasing distance from the wall, whereas in the second case they strongly decrease. We use this depend…
Material Dynamics and PropertiesTheoretical and Computational PhysicsAdvanced Physical and Chemical Molecular Interactions
Takayuki Fukasawa、Zhen‐Yan Deng、Motohide Ando 等 5 位作者2002-09-01Journal of the American Ceramic Society
Porous silicon nitride with macroscopically aligned channels was synthesized using a freeze‐drying process. Freezing of a water‐based slurry of silicon nitride was done while unidirectionally controlling the growth direction of the ice. Pores were generated subsequently by sublimation of the columnar ice during freeze…
Advanced ceramic materials synthesisSilicon Nanostructures and PhotoluminescenceMXene and MAX Phase Materials
Pham Hoai Nam、Pralay Maiti、Masami Okamoto 等 10 位作者2002-09-01Polymer Engineering and Science
Abstract Polypropylene (PP)/clay nanocomposites (PPCNs) were autoclave‐foamed in a batch process. Foaming was performed using supercritical CO 2 at 10 MPa, within the temperature range from 130.6°C to 143.4°C, i.e., below the melting temperature of either PPCNs or maleic anhydride‐modified PP (PP‐MA) matrix without cl…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Foaming and Composites
Zhi Yu、Chen Ang、Ruyan Guo 等 4 位作者2002-09-01Journal of Applied Physics
Ferroelectric-relaxor behavior of Ba(Ti0.7Zr0.3)O3 ceramics is studied in the temperature range from 150 to 450 K. A broad dielectric peak with a high-dielectric maximum exhibits frequency dispersion. The dielectric relaxation rate follows the Vogel–Fulcher relation with E=0.21 eV and TVF=199.6 K. The polarization hys…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisDielectric properties of ceramics
Kimiyoshi Naito、Hiroyuki Hieda、Makoto Sakurai 等 5 位作者2002-09-01IEEE Transactions on Magnetics
Circumferential magnetic patterned media were prepared on a 2.5-inch-diameter glass plate and on a 3-in-diameter silicon plate. A Ni master disk possessing spiral patterns with 60-250-nm-width lands and a 400-nm-width groove was pressed into a resist film on a CoPt or CoCrPt film to transfer the spiral patterns. A dib…
Block Copolymer Self-AssemblyFluid Dynamics and Thin FilmsNanofabrication and Lithography Techniques
Christian Grave、A. Dieter Schlüter2002-09-01OpenAlex
This Microreview concentrates on synthetic issues regarding shape-persistent cycles whose diameters range from a bit more than 1 nm up to the presently largest representative with approximately 5 nm. Its goal is to provide an overall feasibility picture and give those, who want to enter this field, some guidelines. An…
Advanced Polymer Synthesis and CharacterizationSupramolecular Self-Assembly in MaterialsDendrimers and Hyperbranched Polymers
Helena Santos、Milton S. da Costa2002-09-01OpenAlex
The accumulation of organic solutes is a prerequisite for osmotic adjustment of all microorganisms. Thermophilic and hyperthermophilic organisms generally accumulate very unusual compatible solutes namely, di-myo-inositol-phosphate, di-mannosyl-di-myo-inositol-phosphate, di-glycerol-phosphate, mannosylglycerate and ma…
Protein Structure and DynamicsMetabolomics and Mass Spectrometry StudiesEnzyme Structure and Function
Peter Minárik、Nataša Tomášková、Marta Kollárová 等 4 位作者2002-09-01OpenAlex
Malate dehydrogenases (MDH, L-malate:NAD oxidoreductase, EC 1.1.1.37), catalyze the NAD/NADH-dependent interconversion of the substrates malate and oxaloacetate. This reaction plays a key part in the malate/aspartate shuttle across the mitochondrial membrane, and in the tricarboxylic acid cycle within the mitochondria…
Metabolism and Genetic DisordersEnzyme Structure and FunctionAmino Acid Enzymes and Metabolism
Noriaki Sano、Hsin‐Min Wang、I. Alexandrou 等 7 位作者2002-09-01OpenAlex
A simple method to fabricate high-quality nanoparticles including spherical carbon onions and elongated fullerene-like nanoparticles similar to nanotubes in large quantities without the use of vacuum equipment is reported. The nanoparticles are obtained in the form of floating powder on the water surface following an…
Carbon Nanotubes in CompositesGraphene research and applicationsNanopore and Nanochannel Transport Studies