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。
Abstract An evaluation on the effects of pulp and paper mill combined boiler ashes on growth and nutrient uptake by oat ( Avena sativa L., var. 501) and bean ( Phaseolus vulgaris L., var. blue pole) was conducted in a greenhouse. Ash with a calcium carbonate equivalent of 29.1% and a pH of 12.1 was applied at the rate…
Corn, tapioca, wheat, rice, and potato starches were extruded with 30% polystyrene and 5% magnesium silicate or 1% polycarbonate or 0.5% azodicarbonamide in a single screw C. W. Brabender laboratory extruder at 140°C barrel temperature, 140 rpm screw speed, and 16% starch moisture content on dry weight basis. The foam…
The recrystallisation behaviour and its effect on the crystallographic texture during solution heat treatment of thick aluminium alloy 7010 plates has been studied both on commercially hot rolled plates and on laboratory specimens deformed in plane strain compression. In addition to X-ray macrotexture analysis, indivi…
Room-temperature single-crystal X-ray structure determinations of the title compounds, namely, [(ONO2)3Lu(N,N'-bidentate)2], N,N'-bidentate = 'bpy' = 2,2'-bipyridine or 'phen' = 1,10-phenan-throline, are recorded. The complexes are isomorphous with their previously studied lanthanum analogues, being orthorhombic, Pbcn…
Phosphorus-containing flame retardants include red phosphorus, inorganic phosphates, organophosphorus compounds and chlorophosphorus compounds. These are reviewed showing chemical structure and major applica tions. U.S., Western Europe and Japanese producers are given along with their trade names. Intumescent phosphor…
The effects of thermocycle frequency, aging temperature and post-cure conditions on weight loss, microhardness and crack formation of PMR-15 neat resins were investigated. Crack formation was monitored by metallography. The molecular level changes, occurring under the same conditions, were monitored by microscopic FT-…
X-ray diffraction methods are used routinely to identify detrital and authigenic minerals in bulk powders of marine sediment. Semiquantitative bulk XRD analysis, however, is difficult. We employed a mathematical technique using matrix singular value decomposition to solve for reliable normalization factors, thereby al…
Highly oriented Sr 0.5 Ba 0.5 Nb 2 O 6 (SBN50) thin films have been prepared using a sol‐gel method. A homogeneous and stable strontium barium niobate (Sr 1‐x Ba x Nb 2 O 6 , SBN) precursor solution could be prepared via the reaction control of metal alkoxides. The SBN precursor was stabilized by the coordination of t…
Hybrid bimetallic–TTF materials in which the organic layer adopts an unprecedented dimerized structure and the inorganic layer is formed by the first ferromagnetic Cr III –Mn II –Cr III complex are reported. These materials provide valuable information on the magnetic interactions between these metal ions which should…
In the present work we describe an investigation of the influence of low-energy ion irradiation (1-keV ${\mathrm{Ar}}^{+}$) on the surface structure of polycrystalline diamond and amorphous carbon films with various degrees of graphitization. Photoelectron spectroscopy (PES) with excitation energies in the ultraviolet…
The donor and acceptor charge-transfer transitions in YAl${\mathrm{O}}_{3}$:${\mathrm{Ti}}^{3+}$/${\mathrm{Ti}}^{4+}$ were investigated through absorption, emission, excitation, one-photon and two-photon photoconductivities, excited-state absorption, and thermoluminescence. The results are contrasted to similar studie…
Abstract In the present study the idea of five‐fold coordinated aluminium in Al 2 O 3 ‐rich aluminiumsilicate gels and glasses with compositions near to that of mullite (≈72 wt.% Al 2 O 3 , 28 wt.% SiO 2 ) is re‐aximated. Analyses of 27 AlMAS NMR spectroscopy and pair correlation functions on the basis of X‐ray diffra…
Abstract Drying of polymeric coatings often occurs under conditions where the relaxation time of polymer molecules is significant with respect to the processing time scales. The nonequilibrium thermodynamic theory of Durning and Tabor (1986) is applied to model 1‐D drying of viscoelastic solutions with concentration‐d…
An implant system that undergoes a gradual, time-dependent, nontoxic degradation process may offer an efficacious, safe, and desirable alternative to metallic materials used in the treatment of various musculoskeletal conditions. Such a scaffold may also be a suitable vehicle for growing cells and tissue in the labora…
Glasses from the RO.La 2 O 3 .B 2 O 3 (R = Mg, Ca, and Ba) systems have been examined. Glass formation is centered along the metaborate tie line, from La(BO 2 ) 3 to R(BO 2 ) 2 . Glasses generally have transition temperatures >60°C and expansion coefficients between 60 × 10 ‐7 /°C and 100 × 10 ‐7 /°C. Raman and sol…
A self-consistent mean-field treatment of branched polymer additives in a linear polymer matrix is developed in order to study the effect of chain architecture on surface segregation. With branched additives, connectivity between side chains and an increased number of chain ends results in near-surface concentration p…
Abstract Studies of the crystal structures and formation of a charge-transfer (CT) complex proved that 2,2′-bi-1H-imidazole (H2BIM0) forms a new system concerned with the interplay of proton-transfer (PT) and electron-transfer (or charge-transfer (CT)) interactions. X-Ray crystal analyses of newly isolated species, 2-…
It is obvious that functional activity of a protein molecule is closely related to its structure. On the other hand, the understanding of structure-function relationship still remains one of the intriguing problems of molecular biology. There is widespread belief that mutagenesis presents a real way to solve this prob…
Environmental scanning electron microscopy (ESEM) and atomic force microscopy (AFM) were compared as tools for the observation of bacterial biofilms developed on carbon steel and AISI 316 stainless steel surfaces under stagnant conditions. Biofilms were generated in batch cultures of two different isolates of marine s…
The poly(3-hydroxyalkanoate) (PHA) degrading isolate K10 was identified as Streptomyces exfoliatus. This bacterium is distinguished from other PHA-degrading strains by its ability to utilize both poly(3-hydroxybutyrate) (PHB) and poly(3-hydroxyoctanoate) (PHO). A PHA depolymerase structural gene of S. exfoliatus (phaZ…