Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A three-dimensional (3D) multi-dislocation system in an elastically anisotropic crystal under applied stress is considered as a particular case of the phase field microelasticity theory of multivariant stress-induced martensitic transformations. This approach reduces the problem of evolution of a dislocation system to…
The thermal shock resistance (indentation–quench method), fracture toughness, and thermal conductivity of three alumina–silicon–carbide–whisker composites and alumina have been investigated. A new procedure for the evaluation of thermal conductivity data is suggested, and higher room‐temperature thermal conductivity t…
The recrystallisation behaviour of PM2000 oxide dispersion strengthened ferritic alloy has been investigated for tube specimens which had been cold deformed after extrusion. The evolution of the recrystallisation temperature, defined as the minimum temperature at which the specimen begins to recrystallise, has been st…
X-ray structure determination of proteins by using the multiple-wavelength anomalous dispersion method targeting selenomethionine is now widely employed. Isoleucine was examined for the second choice of the substitution of methionine next to leucine. We performed a systematic mutational study of the substitutions of m…
Nitroaromatische Sprengstoffe können einfach und schnell nachgewiesen werden, indem man das Löschen der Photolumineszenz fluoreszierender Polysilole beobachtet. Das Löschen beruht auf dem Elektronentransfer vom Leitungsband der Polysilole zu elektronenarmen Molekülen wie Pikrinsäure, Nitrobenzol, DNT und TNT. Verdünnt…
O plástico tem sido cada vez mais usado em nosso cotidiano em diversos tipos de produtos: garrafas, embalagens, automóveis, etc. Diversas alternativas têm sido buscadas para minimizar o impacto ambiental causado pelos polímeros convencionais. Uma importante alternativa é o uso de polímeros biodegradáveis, que podem se…
BaTiO 3 ceramics doped with different La concentrations (0–12 mol%) were prepared by sintering under the reducing conditions of a nitrogen atmosphere containing 1% hydrogen. The critical donor concentration that causes blocking of the exaggerated grain growth was observed to be ∼10 mol% La. The samples, which were sem…
A new type of guided-mode resonant grating filter is described. The filter is independent of polarization state for oblique incidence. The filter has a crossed grating structure, and the plane of incidence on the filter contains the symmetric axis of the grating structure. Theoretical considerations and numerical calc…
This paper deals with some of the physical properties of face-to-face woven carpets with different structural parameters. Based on appearance retention, abrasion resistance, and tuft withdrawal tests, effective parameters of carpet quality are determined by variance and regression analyses, and the changing characteri…
Various methods of order parameter determination from optical measurements are compared. Measurement results of birefringence and refractive index of liquid-crystalline 4'-pentyloxy-4-cyanobiphenyl (OCB) in the nematic phase are reported. Using these data, the polarizability anisotropy was calculated for both Vuks and…
Abstract Solid state microcellular foaming technology was employed to investigate the influence of impact modification on the foamability of neat rigid PVC and rigid PVC/wood‐flour composite samples. The effects of impact modifier types (crosslinked versus uncrosslinked) and concentrations on the void fraction of foam…
We study the surface behavior of Langmuir films of highly concentrated interfacial colloids composed of flocculated silver nanoparticles located at the liquid−liquid interface of water and dichloromethane. Pressure/area isotherms and UV−visible absorption−reflection spectra are acquired in situ simultaneously. The beh…
Most of the important and general dynamic properties of structural glass-forming substances have been classified into twelve different categories in a recent review. Within the same property in each category, by examining a large number of glass-formers, a pattern of variation is found which correlates with the depart…
Abstract A comparative study of the fire‐retardant efficiency of three commercial aryl phosphates—triphenyl phosphate (TPP), resorcinol bis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenyl phosphate) (BDP)—in PC/ABS blends was carried out. The thermal and hydrolytic stability of the fire‐retardant resins, as wel…
The thermoluminescent properties of polycrystalline Dy doped strontium tetraborate are reported. Its efficiency is at least five times larger than that of TLD-700 and therefore comparable to that of Cu doped lithium tetraborate. The isometric plot shows two spectral bands at approximately 480 and 580 nm like the emiss…
An approach which employs pentameric porphyrin arrays as building blocks toward larger porphyrin arrays is described. Two flexible, and one relatively rigid, Ru-centered porphyrin pentamers (1-3) were synthesized and fully characterized. Their potential as building blocks toward larger porphyrin arrays has been studie…
A micromagnetic model has been developed for investigating the effect of stress on the magnetic properties of thin films. This effect has been implemented by including the magnetoelastic energy term into the Landau–Lifshitz–Gilbert equation. Magnetization curves of a nickel film were calculated under both tensile and…
Small angle x-ray analyses show that the shear-induced hexagonal perforated layer phase in a poly(ethylene oxide)- b-polystyrene diblock copolymer consists of trigonal (R3;m) twins and a hexagonal (P6(3)/mmc) structure, with trigonal twins being majority components. Transmission electron microscopy reveals that the he…
The aim of this work was to design, construct, install, and commission an on-line, X-ray diffraction (XRD) analyzer capable of continuously monitoring phase abundances for use in process plant control. This has been achieved through a joint project between CSIRO Minerals and Fuel & Combustion Technology Pty. Ltd.…
The devitrification kinetics and mechanism of a low‐dielectric, low‐temperature, cofirable K 2 O–CaO–SrO–BaO–B 2 O 3 –SiO 2 glass‐ceramic have been investigated. Crystalline phases including cristobalite (SiO 2 ) and pseudowollastonite ((Ca,Ba,Sr) SiO 3 ) are formed during firing. Activation energy analysis shows that…