Materials Literature
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When the Laue technique is applied to ordinary diffractometer devices and detector systems, problems appear with respect to the Lorentz factor that are unsatisfactorily treated in the literature. A detailed treatment of beam divergence and mosaic spread leads to a derivation of the exact expression for the Lorentz fac…
Magnesium orthosilicate (forsterite) whiskers were synthesized by an oxidation‐reduction reaction in the present investigation. These whiskers were rectangular parallelepipeds, with long sides in a cross‐sectional view from two to ten times as long as the short sides, and measuring from several micrometers to 200 μm w…
The variation of the tilt angle with temperature in the smectic C phase has generally been shown to be non-existent or very slow for compounds or mixtures with the nematic-smectic C transition, while in the case of systems with the smectic A- smectic C transition, a relation between the steepness of this variation, ne…
We present new experimental results on second-harmonic generation in highly conjugated organic molecules and molecular crystals recently developed in our group, as well as on electro-optic eftects in thin-film polymers. A large value of the molecular hyperpolarizability of a new hydrazone-type molecule crystallizing i…
A detailed model for the operation of a flow type atomic layer deposition (ALD) reactor is developed and tested with the growth of tantalum pentoxide thin films. The model incorporates evaporation, diffusion, and convection phenomena in mass transport and a kinetic description of the surface reactions and film growth.…
One of the most commonly overlooked parameters in grain boundary engineering initiatives is solute-interface interactions involving solute concentrations typically in the ppm range. In this work, experimental evidence is presented that demonstrates the significant effect of such interactions upon (1) the specific prop…
The solubility of sulphamethoxypyridazine was measured at several temperatures in mixtures of water:ethanol and ethanol:ethyl acetate. Sulphamethoxypyridazine was chosen as a model drug to compare the solvation effects of proton donor-proton acceptor (water and ethanol) and proton acceptor (ethyl acetate) solvents and…
Since zirconium (Zr) has superior corrosion resistance to concentrated nitric acid (HNO 3 ) at elevated temperature, it has been successfully used as a material for chemical plants to produce HNO 3 or spent nuclear fuel reprocessing plants. However, the occurrence of stress corrosion cracking (SCC) has recently been r…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSoluble Polyimides with Polyalicyclic Structure. 4. Colorless Polyimides from Bicyclo[2.2.1]heptane-2-endo,3-endo,5-exo,6-exo-tetracarboxylic 2,3:5,6-DianhydrideToshihiko Matsumoto and Toshikazu KurosakiCite this: Macromolecules 1995, 28, 16, 5684–5685Publication Date (Print…
The existence of low-frequency, almost dispersionless intrinsic resonant vibrational modes in a transition layer at clean interface between two media (a rigid and a soft crystal) with very different elastic properties is predicted. It is shown that nonlinear interaction of bulk acoustic phonons with fluctuation resona…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, Characterization, and in Vitro Degradation of a Novel Thermotropic Ternary Copolyester Based on p-Hydroxybenzoic Acid, Glycolic Acid, and p-Hydroxycinnamic AcidXiaoming Jin, Cosimo Carfagna, Luigi Nicolais, and Rosa LanzettaCite this: Macromolecules 1995, 28, 14,…
Abstract The structure of cellulose is investigated using a recently derived force field. Published experimental data is taken only as a starting point for purely theoretical investigations. The reliability of the method is validated by calculating physical properties of the obtained geometries. In the course of the i…
Recombinant Escherichia coli fadR atoC(Con) mutants containing the polyhydroxyalkanoate (PHA) biosynthesis genes from Alcaligenes eutrophus are able to incorporate significant levels of 3-hydroxyvalerate (3HV) into the copolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) [P(3HB-co-3HV)]. We have used E. coli fadR (F…
This paper will examine some of the changes that have occurred in epoxy resins and their chemistry and will explore the effect of these changes on electrical insulation. The intent is to present the chemistry in a fashion that will aid insulation designers in compiling their systems and manufacturing processes and wil…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTn-Alkyl Group-Substituted Poly(m-aniline)s: Syntheses and Magnetic PropertiesAkihiro Ito, Ken-ichi Ota, Kazuyoshi Tanaka, Tokio Yamabe, and Kazunari YoshizawaCite this: Macromolecules 1995, 28, 16, 5618–5625Publication Date (Print):July 1, 1995Publication History Published o…
The etching process of polycrystalline tin‐doped indium oxide (ITO) films in HCl solutions is investigated by kinetic and electrochemical experiments and the patterning characteristics are examined by scanning electron microscopy. The influence of oxidizing agents on the etching behavior is studied. A model is propose…
The different corrosion products formed on zinc specimens (pure or industrially electrodeposited) during exposure to solutions containing two concentrations of chloride were identified by Raman spectroscopy; the crystallographic nature of these products was checked by x‐ray diffraction and their morphology was describ…
Tire pyrolysis kinetics was investigated to explore an economically viable design for the pyrolysis process. Derivative thermogravimetry (DTG) and thermogravimetric analysis (TGA) were found to provide valuable information on pyrolysis kinetics and mechanisms of a heterogeneous compound like scrap tire rubbers. Kineti…
Void fraction measurement tests for BWR fuel assemblies have been conducted as part of a Japanese national project. The aim was to verify the current BWR void fraction prediction method. Void fraction was measured using an X-ray CT scanner. This paper describes typical results of void fraction distribution measurement…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRedox Switching of Anthracene Fluorescence through the CuII/CuI CoupleGiancarlo De Santis, Luigi Fabbrizzi, Maurizio Licchelli, Carlo Mangano, and Donatella SacchiCite this: Inorg. Chem. 1995, 34, 14, 3581–3582Publication Date (Print):July 1, 1995Publication History Publishe…