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。
The properties of amorphous materials determined by the presence of localized atomic and electronic states are reviewed. Experimental data on atomic dynamics in glasses are described. The two-level-system (TLS) model is presented, and the limits of its applicability analysed. The concept of soft atomic potentials, all…
A stable decagonal single phase in conventionally solidified Al–Co–Ni and Al–Co–Cu alloys was found to form in each composition range of 15 to 20 at% Co and 10 to 15%Ni or 15 to 20%Cu. Coexisting decagonal and crystalline phases were also formed in conventionally solidified Al70Rh15Ni15 and Al65Rh20Cu15 alloys. The st…
1. General Background of Phosphate Materials (T. Kanazawa). Phosphate Science. History of industrial phosphate materials manufacture. Characteristics of inorganic phosphate materials. Utilization of phosphates as industrial materials. Some problems in phosphate materials research. Phosphate rock - source of phosphates…
A homogeneously aligned nematic liquid crystal cell with a hole-patterned electrode and with an indium-tin oxide (ITO-) coated counter-electrode has been prepared. A non-uniform electric field can be produced by the asymmetrical electrode structure. The liquid crystal director can be reoriented by applying a voltage a…
Oxidative DNA damage has been implicated in diverse biological processes including mutagenesis, carcinogenesis, aging, radiation effects, and chemotherapy. We examined the in vitro effect of low concentrations of Cu(II) or H2O2 alone and in combination on supercoiled plasmid DNA. As much as 10(-2) M Cu(II) or 10(-2) M…
Alcaligenes eutrophus can accumulate poly-3-hydroxybutyrate (PHB) or polyhydroxyalkanoate (PHA) containing only 3-hydroxybutyrate (HB) and 3-hydroxyvalerate (HV) units. Granule-associated PHB-synthase was active with d(−)-3-hydroxybutyryl-CoA and d(−)-3-hydroxyvaleryl-CoA of the range of d(−)- and l(+)-3-hydroxyacyl-C…
The complex shear viscosity of sterically stabilized colloidal dispersions of different-sized silica particles (radius a=28--76 nm) was measured with torsion resonators and a nickel-tube resonator between 80 Hz and 200 kHz. The volume fraction of the samples was varied from 0.10 to 0.60. In the intermediate-frequency…
Fractal geometry is a non‐Euclidean geometry which has been developed to analyze irregular or fractional shapes. In this paper, fracture in ceramic materials is analyzed as a fractal process. This means that fracture is viewed as a self‐similar process. We have examined the fracture surfaces of six different alumina m…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanical properties at the gel point of a crystallizing poly(vinyl chloride) solutionKlaas Te Nijenhuis and H. Henning WinterCite this: Macromolecules 1989, 22, 1, 411–414Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published inissu…
All articles of this category The recent evolution of sonochemistry has led to important improvement of various synthetic processes. The generally accepted theoretical interpretation is based on the phenomenon of cavitation, i.e. the creation of bubbles in a liquid medium, which collapse with the liberation of a consi…
The first page of this article is displayed as the abstract.
Nuclear magnetic resonance (NMR) spectroscopy has evolved over the last decade into a powerful method for determining three-dimensional structures of biological macromolecules in solution. Key advances have been the introduction of two-dimensional experiments, high-field superconducting magnets, and computational proc…
We report on high-energy ball milling of Ru and AlRu. The deformation results in a drastic decrease of the crystal size to a nanometer scale and in an increase of atomic-level strain. This is accompanied by a disordering of the crystal lattice as is shown by means of the long-range-order parameter in AlRu. The specifi…
We study the problem of a single self avoiding membrane in the vicinity of a weakly attracting interface. The crossover exponent Φ needed to characterize the adsorption transition is shown to lie in the interval 0.6 < Φ < 0.666. Real space renormalization provides a very good value for the bulk exponent v (∼ 0.8) and…
Abstract XPS was employed to detect the surface species deposited on an activated platinum electrode following cathodic polarization in deaerated 0.1 M (NH 4 ) 6 Mo 7 O 24 · 4H 2 O solution. At – 160 mV (saturated calomel electrode, SCE), evidence was found of the possible dissociation of polymolybdate to molybdate wi…
The nucleotide sequence of a 1689bp fragment of the Bacillus subtilis locus containing ptsX (a crr-like gene), ptsH (coding for HPr), and the 5'-end of ptsI (coding for Enzyme I) was determined. The deduced amino acid sequences of ptsH and the N-terminal part of ptsI were compared to those of Streptococcus faecalis an…
A novel photo-sensitized polymerization of pyrrole by the use of tris(2,2′-bipyridine)ruthenium(II) as a photo-sensitizer has been investigated in aqueous solution and in polymer matrix for the fabrication of fine conducting polymer patterns.
Novel accurate and stable measurement methods for the magnetostriction constant lambda /sub s/ and the induced anisotropy constant K/sub u/ are presented for amorphous wires. The two constants are theoretically expressed using a magnetization rotation model with or without tensile and compressive stresses. Values of f…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPredictions of cation distributions in AB2O4 spinels from normalized ion energiesRobin W. Grimes, Alfred B. Anderson, and Arthur H. HeuerCite this: J. Am. Chem. Soc. 1989, 111, 1, 1–7Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Publis…
Physiological resting cells (as opposed to resting spores or cysts) have been identified for the following freshwater diatom species: Actinocydus normanii f. subsalsa, Asterionella formosa, Diatoma tenue var. elongatum, Fragilaria capucina, F.construens, F.construens var. venter, F.crotonenss, F.intermedia var. fallax…