Materials Literature
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ADVERTISEMENT RETURN TO ISSUEArticleNEXTConjugates of anticancer agents and polymers: advantages of macromolecular therapeutics in vivoHiroshi Maeda, Len W. Seymour, and Yoichi MiyamotoCite this: Bioconjugate Chem. 1992, 3, 5, 351–362Publication Date (Print):September 1, 1992Publication History Published online1 May 2…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetalloporphyrins as versatile catalysts for oxidation reactions and oxidative DNA cleavageBernard MeunierCite this: Chem. Rev. 1992, 92, 6, 1411–1456Publication Date (Print):September 1, 1992Publication History Published online1 May 2002Published inissue 1 September 1992htt…
Measurements of the thermal conductivity above 30 K of mixed crystals with controlled disorder, (KBr${)}_{1\mathrm{\ensuremath{-}}\mathit{x}}$(KCN${)}_{\mathit{x}}$, (NaCl${)}_{1\mathrm{\ensuremath{-}}\mathit{x}}$, (NaCn${)}_{\mathit{x}}$ ${\mathrm{Zr}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Y}}_{\mathit{x}}$$…
Large crystals of silver selenogallate were grown. Generation of the second harmonic of CO 2 laser radiation in these crystals was studied. An energy conversion efficiency of 19.8% was achieved. Calculations were made of the angular tuning characteristics of optical parametric oscillators using type I and II processes…
Atomistic simulations of hole self-trapping in a pure corundum crystal have been undertaken using three different approaches. The inward Jahn-Teller displacement of two O atoms (on which 80% of the hole density is concentrated), accompanied by the outward displacement of the two nearest Al atoms, gives the energetical…
We have used low-temperature silicon molecular beam epitaxy to grow a δ-doped silicon layer on a fully processed charge-coupled device (CCD). The measured quantum efficiency of the δ-doped backside-thinned EG&G Reticon CCD is in agreement with the reflection limit for light incident on the back surface in the spec…
A theoretical characterization of the guided-mode resonance properties of planar dielectric waveguide gratings is presented. Efficient exchange of energy between forward and backward propagating diffracted waves is shown to be possible with smooth line shapes. The linewidths of the resonances can be controlled by the…
Abstract A plasticity theory is proposed in which the yield strength not only depends on an equivalent plastic strain measure (hardening parameter), but also on the Laplacian thereof. The consistency condition now results in a differential equation instead of an algebraic equation as in conventional plasticity. To pro…
Abstract The activity of an enzyme may be measured by determining the rate of product formation or substrate used during the enzyme-catalysed reaction. For many enzymes there are several alternative assay procedures available and the choice between them may be made on the grounds of convenience, cost, the availability…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Abstract The thermotropic liquid crystalline behaviors of ethylcellullose (EC) were investigated by DSC, polarizing microscope with hot stage, and capillary rheometer. It was found that only those EC that have the ethoxyl content over 45% can exhibit the thermotropic liquid crystalline behaviors: the DSC trace showed…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
Abstract The change of mechanical properties was followed during thermal aging at 85, 95, 105, and 120°C of the 10 PVC–didecylphthalate extrudates studied in the first part of this paper, but also of four new samples differing only by the plasticizer concentration. For these latter samples, the change of dielectric pr…
Abstract Weight‐loss kinetics were studied for 10 industrial extruded samples of poly(vinyl chloride) (PVC) plasticized by 20–30% by weight of didecylphtalate at 85, 95, 105, 110, and 120deg;C. For the most unstable samples, which contained a light coplasticizer, the weight‐loss rate obeyed Fick's law. In the other ca…
The GaP(001) surface treated by H2S has been studied using low-energy electron diffraction (LEED), Auger electron spectroscopy (AES), and x-ray photoelectron spectroscopy (XPS). We, for the first time, find the new surface structure, S/GaP(001)-(1×2), obtained by H2S treatment at 450 °C. The coverage of sulfur is esti…
Heteroepitaxial growth of (001) Al thin films on Si (111) single crystal substrates by vapor deposition was studied by means of x-ray diffraction, Rutherford backscattering spectrometry, and transmission electron microscopy techniques. It was observed that the films deposited at room temperature exhibit random (111) t…
Crystals of KTiOAsO4 were grown by the high temperature solution method and their optical and ionic conductivity properties evaluated. The band edge and IR cutoff were 370 and 4850 nm, respectively. A domain structure prevented efficient frequency conversion in as-grown crystals. The ionic conductivity at 22 °C and 12…
On the surface of a brine-surfactant (AOT) mixture, the long-chain alkanes (N>11) do not spread while the shorter ones (N11) spread leaving a very thin oil film at the surface. The interactions between the oil-water and oil-air interfaces stabilizing the height of this film are a van der Waals attractive potential,…
We show that first-principles electronic structure calculations of silicon wires with diameters up to \ensuremath{\sim}1.5 nm support the idea that quantum confinement and surface effects are responsible for the luminescence in porous silicon. Instead of the indirect gap of crystalline bulk silicon, the band structure…
We have performed first-principles pseudopotential calculations for H-terminated Si wires with thicknesses from 12 to 23 \AA{}, calculating the band gaps and optical matrix elements. Comparison with effective-mass theory shows that the latter is valid for wires wider than 23 \AA{}. We have used our data to analyze the…