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 Low‐temperature relaxation behavior was investigated for a bisphenol‐A and three spiroring type epoxide resins cured with aromatic and spiro‐ring‐type diamines. A new well‐defined relaxation denoted here as the β′ relaxation was observed from 50 to 100°C for the spiro‐ring‐type resin systems in both mechanica…
A colloidal tracer system suitable for light scattering experiments has been prepared. The nonaqueous dispersion comprises host and tracer particles of 0.66 μm diameter in which the refractive index of the dispersion medium is adjusted to that of the host particles. Both the host polymer particles and the inorganic tr…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacteristics of platinum thin films on titanium dioxide(110)Y. M. Sun, D. N. Belton, and J. M. WhiteCite this: J. Phys. Chem. 1986, 90, 21, 5178–5182Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Published inissue 1 October 1986https…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystalline isomerism in (.mu.-oxo)bis[(phthalocyaninato)iron(III)]: further characterization of the isomer having a linear or quasi-linear Fe-O-Fe bond system (.mu.-oxo(2))Claudio Ercolani, Marcello Gardini, Keith S. Murray, Giovanna Pennesi, and Gentilina RossiCite this: I…
Extraction of lipids from bacterial cells or sewage sludge samples followed by simple and rapid extraction procedures and room temperature esterification with pentafluorobenzylbromide allowed combined determinations of poly-beta-hydroxyalkanoate constituents and fatty acids. Capillary gas chromatography and flame ioni…
We investigate a random walk model for describing mixed alkali effects in ionic conductors of the β-alumina type. In our model, the observed drastic variation in the transport properties of the mixed crystals is related to critical properties near a percolation threshold, which originates from the blocking of conducti…
A stable adduct was isolated from copper(I1) chloride and the stable free radical 2-phenyl-4,4,5,5-tetramethylimidazoline- 1-oxy1 3-oxide. The stoichiometry of the adduct is 1:2, and a crystal structure analysis has shown the copper ion to be four planar coordinated by two chlorine atoms and two oxygen (nitroxyl) atom…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiscotic mesophases of dirhodium tetracarboxylatesAnne Marie Giroud-Godquin, Jean Claude Marchon, Daniel Guillon, and Antoine SkouliosCite this: J. Phys. Chem. 1986, 90, 22, 5502–5503Publication Date (Print):October 1, 1986Publication History Published online1 May 2002Publis…
A diffusionless cubic (c)→metastable tetragonal (t′) phase transformation occurs in certain alloys in the ZrO 2 ‐Y 2 O 3 system on quenching from elevated temperatures. Microstructural features due to this phase transformation, principally anti‐phase domain boundaries (APB's) and mechanical accommodation twins, have b…
Dilute Al–Fe–Si alloys with Fe/Si weight ratios of 2 and 4, which had been subjected to solidification rates of ~1 and ~10 Ks−1 were investigated by analytical transmission electron microscopy. The precipitation of ‘constituent’ intermetallic phases was characterized as a function of the Fe/Si ratio, alloy purity, rat…
Abstract Thermoplastic elastomer blends of natural rubber (NR) with high density polyethylene (HDPE) and with low density polyethylene (LDPE) were reinforced with short silk fiber. Processing characteristics such as torque and temperature developed during mixing and the effect of processing parameters such as nip gap…
"Scanning Electron Microscopy." Optica Acta: International Journal of Optics, 33(10), pp. 1228–1229
Sintered α‐SiC was corroded by thin films of Na 2 SO 4 and Na 2 CO 3 molten salts at 1000°C. This hot corrosion attack reduced room‐temperature strengths by as much as 50%. Strength degradation was proportional to the degree and uniformity of corrosion pitting attack as controlled by the chemistry of the molten salt.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIsolation and structural characterization of the solvated lithium salts of the Group VA (15) anions [EPh2]- (E = nitrogen, phosphorus, arsenic or antimony) and [Sb3Ph4]-Ruth A. Bartlett, H. V. Rasika Dias, Hakon. Hope, Brendan D. Murray, Marilyn M. Olmstead, and Philip P. Po…
The distribution of local magnetism in Al-Mn quasicrystal alloys has been studied by NMR spin-echo techniques. The $^{55}\mathrm{Mn}$ resonance is found to be close to the position observed in non-magnetic orthorhombic ${\mathrm{Al}}_{6}$Mn and $\ensuremath{\alpha}\ensuremath{-}{\mathrm{Al}}_{73}{\mathrm{Si}}_{10}{\ma…
Abstract Ozone, O 3 , reacts with a carbon sample at room temperature. Clean carbon samples show a half to one and a half order of magnitude increased initial rate constant ( k 0 ) for O 3 loss relative to repetitively exposed carbon samples. The ozone loss rate and therefore the rate constant reaches steady state ( k…
We studied the effect of topical application of arachidonate on the brain surface on blood-brain barrier permeability to either 125I-labeled human albumin or to horseradish peroxidase administered intravenously. Arachidonate was applied under a cranial window, and the concentration of albumin was measured in brain aft…
Both b.c.c. and icosahedral AlCuLi phases coexist following conventional ingot casting. Owing to a slight difference in their composition, they can be distinguished by a Z-contrast technique in a scanning electron microscope. Moreover, the existence of an orientation relationship between the b.c.c. and icosahedral (Al…
The genes for the two subunits of the formate dehydrogenase from Methanobacterium formicicum were cloned and their sequences determined. When expressed in Escherichia coli, two proteins were produced which had the appropriate mobility on an SDS gel for the two subunits of formate dehydrogenase and cross-reacted with a…
A theoretical investigation has been made of the interface excitations associated with the double inversion layers of semiconductor-insulator-semiconductor structure with metallized surfaces. The general dispersion relation has been derived using the local electromagnetic theory. The numerical computation is performed…