Xiao‐Ming Chen、Yu-Luan Wu、Yang 等 5 位作者1998-11-01Inorganic Chemistry
Synthesis, crystal structures, and magnetic properties of two types of carboxylate-bridged Cu II 2 Ln III 2 complexes, formulated as [Cu 2 Ln 2 (bet) 10 (H 2 O) 8 ](ClO 4 ) 10 ·2H 2 O ( 1; Ln III = La III, Ce III, or Gd III; bet = betaine) and [Cu 2 Ln 2 (bet) 12 (ClO 4 ) 2 ](ClO 4 ) 8 ( 2; Ln III = Gd III or Sm III )…
Magnetism in coordination complexesLanthanide and Transition Metal ComplexesMetal-Catalyzed Oxygenation Mechanisms
Christian Weber、Felix Rustemeyer、Heinz Dürr1998-11-01Advanced Materials
A molecular switching device based on a photochromic dihydroindolizine (DHI) with non-destructive read-out capacity (see Figure for a schematic representation of the erasable dual-mode optical switch) is presented. Two different DHIs based on a pyridazine and a chinoline heterocycle have been investigated and the resu…
Porphyrin and Phthalocyanine ChemistryPhotochromic and Fluorescence ChemistryPhotoreceptor and optogenetics research
Atsunori Matsuda、Yoshihiro Matsuno、Masahiro Tatsumisago 等 4 位作者1998-11-01Journal of the American Ceramic Society
Pregrooves of 1.6 µm pitch for optical data storage have been embossed successfully by pressing a stamper against x CH 3 Si(OC 2 H 5 ) 3 (100 ‐ x )Si(OC 2 H 5 ) 4 ‐derived gel films (60 ≤ x ≤ 100 mol%) on glass‐disk substrates of 130 mm diameter. When x is <40 mol%, the resultant films are too hard to emboss patter…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesAdhesion, Friction, and Surface Interactions
T. Kimura、Reiji Kumai、Y. Tokura 等 5 位作者1998-11-01Physical review. B, Condensed matter
Temperature variations of the lattice structure and the magnetotransport properties have been investigated for a bilayered manganite crystal ${\mathrm{LaSr}}_{2}{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}$ (hole-doping level of $x=0.5$) which undergoes the charge-ordering below $\ensuremath{\sim}210 \mathrm{K}.$ The charge-orde…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides
Serge Gut1998-11-01Materials science forum
A mathematical model of processes taking place during a thermo-chemical heat treatment is presented. The paper focuses on the analysis of phenomena which occur when a diffusing element forms with an alloy a phase diagram with solid solutions. It was assumed that the concentration of elements on the phase boundaries in…
Material Properties and Applications
J. Brian Caldwell1998-11-01Optics and Photonics News
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text J. BRIAN CALDWELL, "All-fused Silica 248-nm Lithographic Projection Lens," Optics & Photonics News 9(11), 40-41 (1998) Export Citation BibTex Endnote (…
Optical Coatings and Gratings
Jon Binner、I. Al-Dawery1998-11-01Superconductor Science and Technology
The potential for the use of microwave radiation as an alternative energy source for the melt texturing of bulk, ceramic high- YBCO superconductors has been investigated with a view to taking advantage of the opportunities presented by this novel heating technique. T-shaped samples of 83% dense, sintered YBCO were mel…
Physics of Superconductivity and MagnetismAdvanced ceramic materials synthesisCopper Interconnects and Reliability
W. Borchard1998-11-01Berichte der Bunsengesellschaft für physikalische Chemie
Abstract In a short survey chemical and physical aspects characterising thermoreversibly gelling systems are gathered. Rheological properties of the system gelatin/water for different polymer concentrations at various temperatures and varying angular frequencies are presented. The results are interpreted following the…
Material Dynamics and PropertiesRheology and Fluid Dynamics StudiesAdvanced Mathematical Theories and Applications
Y. Nir、M. Narkis、A. Siegmann1998-11-01Journal of Macromolecular Science Part B
The presence of aliphatic hydroxyl groups in poly(ethylene-co-vinylaleohol) (EVOH) suggests that these copolymers have the potential of forming miscible blends, within certain composition ranges, with a variety of polymers containing complementary functional groups. Hydrogen bonding in EVOH involves a wide variety of…
Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties
Raja Datta、Auke Talma、A. H. M. Schotman1998-11-01Rubber Chemistry and Technology
Abstract A study has been made to differentiate between the crosslinking reaction of bis-maleimides and bis-citraconimides in squalene as well as in natural rubber. Bis-maleimides are found to participate in the crosslinking reaction in the absence of curatives such as accelerators and sulfur. Bis-citraconimides take…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesLubricants and Their Additives
И. Н. Огородников、A. V. Porotnikov、А. В. Кружалов 等 4 位作者1998-11-01Physics of the Solid State
A study of recombination kinetics in LiB 3 O 5 (LBO) crystals by time-resolved luminescence and absorption spectroscopy is reported. An investigation of the kinetics of transient optical absorption (TOA) and luminescence under ns-scale electron-beam excitation performed within a broad temperature range of 77–500 K and…
High-pressure geophysics and materialsCrystal Structures and PropertiesX-ray Diffraction in Crystallography
O. Breuer、R. Tchoudakov、M. Narkis 等 4 位作者1998-11-01Polymer Engineering and Science
Abstract The effect of shear level on the structure and resultant resistivity of CB‐containing high impact polystyrene/linear low density polyethylene (HIPS/LLDPE) extrudates produced by a capillary rheometer, as a function of blend composition and CB content, was studied. The data were compared with results obtained…
Advanced Sensor and Energy Harvesting MaterialsPolymer crystallization and propertiesPolymer Nanocomposites and Properties
Masabumi Nishikawa、Ken‐ichi Tanaka、Mitsuru Uetake 等 4 位作者1998-11-01Fusion Technology
The tritium bred in a deuterium-tritium fusion reactor is removed from its blanket by using helium sweep gas mixed with some amount of hydrogen to promote the release rate. From the viewpoint of uptake capacity at the partial pressure of tritium and ease of tritium transfer to the main fuel cycle, a cryosorption bed,…
Fusion materials and technologiesParticle accelerators and beam dynamicsSuperconducting Materials and Applications
James Webster、Raechel M. Laing、Brian Niven1998-11-01Textile Research Journal
In order to examine the mechanisms by which seams age and fail under loads typical of those in use, factors and interactions among factors influencing the change in load required to extend an ISO-301 stitched seam (type ISO 1.01.01) during repeated lon gitudinal extension/recovery cycles at low loads are identified. F…
Mechanical Behavior of CompositesTextile materials and evaluationsIndustrial Vision Systems and Defect Detection
Igor Mitkov、Daniel M. Tartakovsky、C. L. Winter1998-11-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
We propose a phenomenological approach for describing the dynamics of wetting front propagation in porous media. Unlike traditional models, the proposed approach is based on the dynamic nature of the relation between capillary pressure and medium saturation. We choose a modified phase-field model of solidification as…
Solidification and crystal growth phenomenaAdvanced Mathematical Modeling in EngineeringFluid Dynamics and Thin Films
Han‐Xiong Huang1998-11-01Polymer Engineering and Science
Abstract Continuous extrusion was studied of self‐reinforced high density polyethylene (HDPE) sheets from flow‐induced crystallization at die pressures varying from 30 to 60 MPa. Their morphology, thermal behavior, tensile strength, and light transmittance were tested. Flow fields of a polymer melt through a convergin…
Mechanical Behavior of CompositesPolymer crystallization and propertiesFiber-reinforced polymer composites
V. M. Anguero、R. C. Adamo1998-11-01OpenAlex
We present an introduction to Spindt cathode eld emission technology developed at SRI with a focus on possible space applications. The low power and light weight of Spindt cathodes makes them ideally suited to space applications requiring electron emission, while the robustness and eciency of the devices provides the…
Carbon Nanotubes in CompositesPlasma Diagnostics and ApplicationsRadiation Effects in Electronics
作者信息未提供1998-11-01Zeitschrift für Kristallographie - Crystalline Materials
Abstract The crystal structure of β -sodium acetate, NaC 2 H 3 O 2 , has been determined from X-ray powder diffraction data. Grid search and Rietveld refinement have been used to determine the structure. The crystal symmetry is orthorhombic (space group Pmn 2 1 , Z = 2) and the unit cell parameters are a = 3.4517(5) Å…
Crystallography and molecular interactionsCrystal Structures and PropertiesX-ray Diffraction in Crystallography
Jean-Christophe Géminard、C. Laroche、Patrick Oswald1998-11-01Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
The equilibrium shape of a looped edge dislocation in a vertical smectic-$A$ film allows the determination of its line tension: in agreement with theoretical predictions, it is found to be proportional to its Burgers vector and to increase as $1/\sqrt{d}$ when the film thickness d decreases.
Liquid Crystal Research AdvancementsBlock Copolymer Self-AssemblyFluid Dynamics and Thin Films
John P. Sharpe、Mohamed Bourham、J.G. Gilligan1998-11-01Fusion Technology
The SIRENS high heat flux facility at NCSU has been used to generate particulate representative of material mobilized during a hard disruption in a fusion reactor. The electrothermal (ET) plasma source in SIRENS has been found to be suitable for disruption simulation. Particulate generation occurs in both the fusion r…
Fusion materials and technologiesMetallurgical Processes and ThermodynamicsIon-surface interactions and analysis