Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSonolysis of polymers in aqueous solution. New observations on pyrolysis and mechanical degradationArnim Henglein and Maritza GutierrezCite this: J. Phys. Chem. 1988, 92, 13, 3705–3707Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Publishe…
In this paper, diffusion wear during milling of titanium alloys is reported. In high speed milling, tool wear is mainly caused by diffusion. The wear pattern is characterised by the combined extension of crater wear on the rake face and glacier wear on the flank. Evidence of diffusion of cobalt and carbon at the inter…
Escherichia coli grown in limited methionine and excess norleucine media accumulate cyanogen bromide-resistant species of proteins after the methionine supply is exhausted. Bacteria, transformed by recombinant plasmid pIPD37 carrying the adk gene and grown under limiting methionine and excess norleucine, synthesize 16…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of nitridoiron(V) porphyrins detected by resonance Raman spectroscopyWolf Dieter. Wagner and Kazuo. NakamotoCite this: J. Am. Chem. Soc. 1988, 110, 12, 4044–4045Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 J…
Abstract The wetting contact angle was measured for water drops settled on the surface of pressed discs of kaolinite, alumina, bentonite, marble, montmorillonite, and quartzite immersed in hexane, octane, dodecane, cis-decalin, and air. Minimum and maximum values of the contact angle were obtained for the given system…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnion-exchange behavior of polypyrrole membranesE. W. Tsai, T. Pajkossy, K. Rajeshwar, and J. R. ReynoldsCite this: J. Phys. Chem. 1988, 92, 12, 3560–3565Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 June 1988https://p…
The electrical conduction of low-density polyethylene (LDPE) has been investigated between 20 degrees C and 150 degrees C and up to 1 MV/cm. Special molded specimens and a self-compensating test cell were used; particular care has been taken in the control of experimental conditions. Absorption currents show broad max…
Direct measurements of grain boundary chromium depletion by energy dispersive x-ray spectroscopy (EDS) in a scanning transmission electron microscope (STEM) are compared to measurements of the degree of sensitization (DOS) using the electrochemical potentiokinetic reactivation (EPR) test technique. Results indicate th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared studies of carbon monoxide and carbon dioxide adsorption on platinum/ceria: the characterization of active sitesD. W. DanielCite this: J. Phys. Chem. 1988, 92, 13, 3891–3899Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCross-conjugated and pseudo-cross-conjugated mesomeric betaines. 1. Synthesis and characterizationKevin T. Potts, Peter M. Murphy, and William R. KuehnlingCite this: J. Org. Chem. 1988, 53, 13, 2889–2898Publication Date (Print):June 1, 1988Publication History Published onlin…
The problem of evaluating the time-to-failure percentiles in progressively-censored tests on solid insulating materials is addressed. Statistical methods to estimate the parameters of the Weibull distribution (and their confidence limits) are examined on the basis of the results of aging with combined thermal-electric…
1. Introduction. In the van der Waals/Cahn-Hilliard theory ([20], We shall consider this theory, but only with a relatively simple dependence on Vu, and only as restricted to isothermal situations; precisely, we shall allow for a free-energy (per unit volume) of the form
Abstract It has been shown that butadiene initiated with potassium naphthalene in the mixture THF‐ n ‐hexane polymerizes conveniently rapidly. The active center is sufficiently stable below 0°C to produce narrow molecular weight linear polybutadiene. The two‐ended living polymer has also served to prepare ring polybut…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermoreversible gelation of isotactic polystyrene: thermodynamics and phase diagramsJean Michel Guenet and Gregory B. McKennaCite this: Macromolecules 1988, 21, 6, 1752–1756Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue…
Deep level transient spectroscopy measurements were performed to study the annealing-induced changes in trap centers in ZnO varistors and to shed more light on varistor stability mechanism. Two electron traps, Ec-0.26 eV and Ec-(0.2–0.3) eV, were observed in the unannealed samples in large quantities (7–9×1014 cm−3).…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnisotropic exchange in the cobalt-cobalt and cobalt-copper dinuclear EDTA hydrate (Co2(EDTA).cntdot.6H2O, CoCu(EDTA).cntdot.6H2O) bimetallic ordered chains. Low temperature investigation of the thermal and magnetic propertiesE. Coronado, M. Drillon, P. R. Nugteren, L. J. De…
A double many-body expansion potential energy surface reported previously for H02(R2A”) and referred to here as DMBE \nI is modified to produce thermal rate coefficients for the reaction 0 + OH - O2 + H in good agreement with experiment. \nThis new potential energy surface will be referred to as DMBE 11. By th…
We report an analysis of the excited-state dynamics, fluorescence, as well as excited-state absorption, in the ${\mathrm{Ni}}^{2+}$-doped vibronic laser systems MgO:${\mathrm{Ni}}^{2+}$ and ${\mathrm{MgF}}_{2}$:${\mathrm{Ni}}^{2+}$. Use is made of this analysis to show the ability and the limitations of the single-con…
Data for as-grown and partially oxidized samples of Ti:Al/sub 2/O/sub 3/ grown by the vertical-gradient-freeze technique show that the residual infrared absorption in these samples is largely due to Ti/sup 3+/-Ti/sup 4+/ pairs. In agreement with this pair model, the residual absorption in as-grown samples has been sub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhosphorescence spectra of bacteriochlorophyllsLarry. Takiff and Steven G. BoxerCite this: J. Am. Chem. Soc. 1988, 110, 13, 4425–4426Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 June 1988https://pubs.acs.org/doi/10.10…