Materials Literature
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Abstract Some viologen crystals bearing a p-toluenesulfonate anion as a counter ion were shown to exhibit reversible photoreductions (photochromism) either in air or under vacuum, whereas in a poly(N-vinyl-2-pyrrolidone) matrix all investigated viologens indicated reversible photocolor developments. Amphoteric ions su…
<div class="htmlview paragraph">OVER THE NEXT SEVERAL YEARS, electrochromic mirrors will be introduced for use on automobiles, initially as interior mirrors and later for the exterior. Electrochromic mirrors have variable reflectivity and this offers an opportunity to select a reflectance level that avoids glare…
Abstract Die Aufnahme von Wasserstoff aus Medien kann bei Stählen mit ferritischen Gefügeanteilen zu Schädigungen führen. Die Wechselwirkung von absorbiertem Wasserstoff und Stahl wird einerseits durch die Wasserstoffaktivität, andererseits durch belastungs‐ und gefügeabhängige Grenzwerte bestimmt. Die Arten wassersto…
The equations for the oxidation of a silicon cylinder or sphere or of a cylindrical hole or spherical cavity in silicon are solved exactly in the quasi‐static limit. In all cases, oxidation is complete after a finite time. If the initial oxidized layer is sufficiently thin and the initial radius is sufficiently large,…
The interaction between rat mammary gland thioesterase II and fatty acid synthetase has been studied by a variety of physicochemical techniques. Pyrene-labeled thioesterase II does not exhibit increased fluorescence anisotropy when mixed with fatty acid synthetase, suggesting that the enzymes do not readily form a com…
High-resolution transmission electron microscopy (HRTEM) reveals a wide variety of deviations from perfect crystalline periodicity within many mineral groups. Among the defects, the linear and planar ones are particularly abundant in synthetic and natural phyllosilicates which show a quasi-one-dimensional structural o…
Analogs of the 2',5'-linked adenylate trimer diphosphate (pp5'A2'p5'A2'p5'A or 2-5A) containing 8-bromoadenosine in the first, second, third, first and third, or second and third nucleotide positions (from the 5' terminus) were synthesized and found to vary dramatically in their ability to bind to and activate the RNa…
The threshold field for flexoelectric instability in nematic liquid crystals, and the upper limit of the maximum tilt angle connected with this instability are rigorously evaluated. The nematic liquid crystal, with positive dielectric anisotropy, is assumed to be in the homeotropic configuration, without external fiel…
Abstract The radiation induced grafting of N‐vinylpyrrolidone in aqueous solution onto poly(vinylidene fluoride) (PVF 2 ) films by preirradiation technique using 160 keV electrons has been investigated. Among the grafting parameters, the most important are storage time after irradiation, grafting time, grafting temper…
The aim of this work was to find the quantitative dependences between fracture toughness K lc and the volume fraction of retained austenite in the matrix of quenched high‐speed steels. The tests were carried out on three model alloys of a different content quotient of Mo: W which, after quenching, were gradually super…
Technical Briefs Fouling Due to Corrosion Products Formed on a Heat Transfer Surface E. F. C. Somerscales, E. F. C. Somerscales Rensselaer Polytechnic Institute, Troy, NY 12181 Search for other works by this author on: This Site PubMed Google Scholar M. Kassemi M. Kassemi Rensselaer Polytechnic Institute, Troy, NY 121…
The primary objective of this investigation was to develop a quantitative model which could correctly predict the effects of material, environment, and stress-related parameters on the stress-corrosion and the corrosion fatigue behavior of stainless and low-alloy steels in high-temperature water. The approach used was…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT13C NMR assignments of the methylene carbons in polypropyleneH. N. Cheng and G. H. LeeCite this: Macromolecules 1987, 20, 2, 436–438Publication Date (Print):February 1, 1987Publication History Published online1 May 2002Published inissue 1 February 1987https://pubs.acs.org/do…
In comparative studies, Hemo-De (PMP Medical Industries, Inc., Irving, Tex.) was found to be a suitable replacement for ethyl acetate in the Formalin-ethyl acetate concentration technique. With essentially equivalent recovery rates for both procedures, the Formalin-Hemo-De concentration technique is considered to be t…
Nucleation of superconductivity in a thin film situated in a parallel magnetic field is considered. The field dependence of the coherence length is taken into account. In particular, the known result for the nucleation field H near the critical temperature ${T}_{c}$ is shown to hold only in the dirty limit. If a certa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCopolymerization of epoxides by aluminum porphyrin - reactivity of (porphinato)aluminum alkoxide as growing speciesTakuzo. Aida, Keiichiro. Wada, and Shohei. InoueCite this: Macromolecules 1987, 20, 2, 237–241Publication Date (Print):February 1, 1987Publication History Publi…
Abstract The importance of modern surface analytical techniques in understanding the mechanisms of corrosion inhibition is discussed. The discussion is conducted in terms of the following metals and inhibitors which inhibit them: copper and alloys – mercaptobenzothiazole, benzotriazole, and benzimidazole iron and nick…
A computer program is developed to generate the spatial symmetric forms of the third-order susceptibility tensor. Mistakes in the trigonal crystal classes (Butcher's "32" and Zhao's "3") were discovered and corrected. A completely corrected table for the third-order susceptibility is presented.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural and iron-57 Moessbauer characterization of 1:1 and 2:3 ferrocenium salts of 7,7,8,8-tetracyanoperfluoro-p-quinodimethaneJoel S. Miller, Jian H. Zhang, and William M. ReiffCite this: Inorg. Chem. 1987, 26, 4, 600–608Publication Date (Print):February 25, 1987Publica…
By means of the approximate renormalization approach of Niu and Nori [Phys. Rev. Lett. 57, 2057 (1986)] the widths of subband segments in the spectrum and the occupation probabilities on subbands are obtained to the lowest order for the two-value Fibonacci chains. The global scaling properties of the spectrum are then…