Materials Literature
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Consider a diffraction of a beam of particles in <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper R cubed"> <mml:semantics> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struc…
An experimental apparatus has been developed to permit simultaneous measurement of temperature change and moisture flux through fabrics during the transient period after one set of fabrics has been exposed to humidity and temperature gradients. Both the water vapor method and the sweat method were used to study the tr…
Abstract The ring‐retaining products formed from the OH radical‐initiated reactions of o ‐, m ‐, and p ‐xylene in the presence of NO x have been identified and their formation yields determined. Experiments were carried out at 298 ± 2 K and in the presence of 740 torr total pressure of air. The products observed, and…
Distribution of bacteria influential on the algal growth during the process of development and decay of Gymnodinium nagasakiense red tide and their effects on the growth of G. nagasakiense and Skeletonema costatum were investigated in Uranouchi Inlet, Kochi. Seawater samples collected around red tide period of G. naga…
The authors present a review of surface dielectric behavior of several polymers under high-voltage (HV) outdoor conditions. The scope is limited to materials used to provide weathersheds on non-ceramic insulators and room-temperature vulcanized silicone rubber coating used on ceramic insulators for combating problems…
The small-amplitude periodic optical transmittance response of redox polymer films is derived and related to the corresponding electrical behaviour. The combination of optical and electrical measurements allows Faradaic and non-Faradaic charging processes to be distinguished. The analysis of the modulated transmission…
Superplasticity in ceramics and ceramic composites is reviewed. Deformation characteristics, and in particular the strain rate sensitivities in these materials, are discussed. From the strain rate sensitivity and grain size dependence, deformation mechanisms in these superplastic materials have been addressed. It appe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrolysis of phenyl picolinate at the mineral/water interfaceAlba Torrents and Alan T. StoneCite this: Environ. Sci. Technol. 1991, 25, 1, 143–149Publication Date (Print):January 1, 1991Publication History Published online1 May 2002Published inissue 1 January 1991https://pu…
Abstract Results for four different volume‐dependent rate processes of an epoxy resin, Epon 1001F, fully cured with a stoichiometric amount of 4,4′‐diamino diphenyl sulfone are presented: (1) specific volume measurements at constant rates of cooling; (2) time‐dependent volume measurements after rapid temperature chang…
1′,3′,3′-Trimethylspiro[2H-1-benzopyran-2,2′-indoline](abbreviated to H–SP) and its derivatives, 6-nitro (NO2–SP) and 6-nitro-8-(pyridinium)methyl spiropyrans (Py+–SP), have been intercalated in the interlayers of Montmorillonite. The intercalation was highly dependent on the substituent groups on the SPs. Charged Py+…
Infrared spectra are reported of methanol adsorbed at 295 K on reduced Cu/SiO2 and on Cu/SiO2 which had been preoxidised by exposure to excess nitrous oxide. Methanol was chemisorbed on reduced Cu/SiO2 to give methoxy species on both silica and copper, gave a trace of formate on copper via reaction with residual surfa…
Phthalocyanines (H2Pc) octasubstituted with branched alkoxy chains were synthesized: 2,3,9,10,16,17,23,24- octakis(3,7-dimethyloctoxy)phthalocyanine (1a) and 2,3,9,10,16,17,23,24-octakis(3,7,11-trimethyldodecoxy)phthalocyanine (1b). Their mesomorphic properties were studied by DSC, polarization microscopy and X-ray di…
Abstract The harmonic balance method is a technique for the numerical solution of nonlinear analog circuits operating in a periodic, or quasi‐periodic, steady‐state regime. The method can be used to efficiently derive the continuous‐wave response of numerous nonlinear microwave components including amplifiers, mixers,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses of monometalated and unsymmetrically substituted binuclear phthalocyanines and a pentanuclear phthalocyanine by solution and polymer support methodsClifford C. Leznoff, Polina I. Svirskaya, Ben Khouw, Ronald L. Cerny, Penny Seymour, and A. B. P. LeverCite this: J.…
High-resolution electron-energy-loss spectroscopy of the surface of graphite reveals a discrete loss feature attributed to the excitation of a \ensuremath{\pi}-band plasmon polarized with E\ensuremath{\parallel}c. The frequency of the plasmon is found to be strongly temperature dependent. This arises from the contribu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFunctional metallomacrocycles and their polymers. 25. Kinetics and mechanism of the biomimetic oxidation of thiol by oxygen catalyzed by homogeneous polycarboxyphthalocyaninato metalsHirofusa Shirai, H. Tsuiki, E. Masuda, T. Koyama, K. Hanabusa, and N. KobayashiCite this: J.…
Oxidation behavior of a TiAl coupon was studied in a temperature range 1100 to 1400 K in a flow of purified oxygen at atmospheric pressure using thermogravimetry and standard metallographic techniques. The oxidation kinetics initially follows approximately a linear rate law. The oxidation rate decreases gradually as t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPerformance and stability of the organosilicon surfactant L-77: effect of pH, concentration, and temperatureMoritz Knoche, Hiroto Tamura, and Martin J. BukovacCite this: J. Agric. Food Chem. 1991, 39, 1, 202–206Publication Date (Print):January 1, 1991Publication History Publ…
The polarized absorption spectra, emission spectra, and fluorescence dynamics of Cr:forsterite are presented and analyzed in detail. At least three different kinds of emitting centers are identified by time-resolved spectroscopy. These correspond to two sorts of octahedrally coordinated Cr/sup 3+/ ions and one Cr/sup…
We study the curvature elastic properties of monolayers of diblock copolymers adsorbed at the interface of two incompatible solvents which are also selective solvents for the two blocks. At saturation, the interfacial free energy is minimized with respect to contributions from the chain conformation free energy, the i…