Materials Literature
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During anodization for porous silicon formation, a nonelectrochemical dissolution reaction of porous silicon is found in addition to an electrochemical porous silicon formation reaction. The amount of dissolved silicon and the porous silicon density in the anodization process are formulated as functions of hydrofluori…
SUMMARY Uptake of K was measured using a single onion root technique with four soil cylinder diameters, and measuring changes in exchangeable K in the soil. Baldwin's model fitted the measured uptake when only exchangeable K was taken up, but that of Heming & Rowell allowed predictions of uptake of both exchangeab…
Investigations were conducted on the pitting corrosion of zirconium in chloride solution under potentiostatic conditions. Both stable and unstable pitting were observed. Unstable pitting indicated by anodic current oscillations resulting from repetitive new pit nucleation and repassivation were all ultimately repassiv…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA novel method of functionalizing the ethyl chain of octaethylporphyrinC. K. Chang and Chariklia SotiriouCite this: J. Org. Chem. 1987, 52, 5, 926–929Publication Date (Print):March 1, 1987Publication History Published online1 May 2002Published inissue 1 March 1987https://doi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLEED study of benzene and naphthalene monolayers adsorbed on the basal plane of graphiteU. Bardi, S. Magnanelli, and G. RovidaCite this: Langmuir 1987, 3, 2, 159–163Publication Date (Print):March 1, 1987Publication History Published online1 May 2002Published inissue 1 March…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIdentification of Antiinflammatory Agents from Sideritis Species Growing in SpainFrancisco A. T. Barberan, Salvador Mañez, and Angel VillarCite this: J. Nat. Prod. 1987, 50, 2, 313–314Publication Date (Print):March 1, 1987Publication History Published online1 July 2004Publis…
Electrochromic iridium oxide films have been prepared by the thermal oxidation of iridium‐carbon composite films (Ir‐C films) obtained by evaporation of Ir from a graphite crucible with an electron gun. The XPS analysis indicates that the Ir‐to‐C ratio in the Ir‐C films lies in a range from 0.061 to 0.165. A change in…
The rate of exocellular levansucrase synthesis in an overproducing (sacUh) strain of Bacillus subtilis was shown to be directly proportional to the amount of two different transient forms of this enzyme located within the membrane fraction of the cells. The apparent Mr of the larger membrane form was 53,000, and that…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDouble glass transitions in aqueous lithium chloride solutions vitrified at high pressures: evidence for a liquid-liquid immiscibilityH. KannoCite this: J. Phys. Chem. 1987, 91, 7, 1967–1971Publication Date (Print):March 1, 1987Publication History Published online1 May 2002P…
Abstract Feldspars in Louisiana Miocene sandstones, at depths of 2,400 to 6,000 m (80 to 150 degrees C), show progresssive reaction with increasing burial. Plagioclase undergoes both dissolution and replacement by albite, whereas K-feldspar undergoes only dissolution. Reactions do not reach completion by 6,000 m (150…
The silica-scaled algae (Synuraceae, Chrysophyceae sensu lato) are compared to other Chrysophyceae, Phaeophyceae and Bacillariophyceae with occasional comparisons to other chlorophyll c-containing algae, scaled protozoa and oomycete fungi. The silica-scaled algae have several unique characters which separate them from…
Note: Bar Ilan Univ,Ramat Gan,Israel Minist Def,Haifa,IsraelG6408Times Cited:43Cited References Count:15 Reference LC-ARTICLE-1987-009doi:10.1366/0003702874449066 Record created on 2006-08-21, modified on 2017-05-10
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, antitumor activity, and x-ray structure of bis(imidazolium) (imidazole)pentachlororuthenate(III), (ImH)2(RuImCl5)B. K. Keppler, D. Wehe, H. Endres, and W. RuppCite this: Inorg. Chem. 1987, 26, 6, 844–846Publication Date (Print):March 1, 1987Publication History Pub…
Abstract Polypyrrole has been electrodeposited at a constant current density of 4 mA cm −2 onto Pt from 0.1 M pyrrole, 0.1 M NBu 4 BF 4 in dry CH 3 CN. The thickness of the polypyrrole has been varied over a wide range of 0.02 to 50 μm. Elemental analysis reveals an excess of hydrogen in the polymer. The electrochemic…
Abstract In this survey, we have concluded that carbon black reinforces ultimate properties of rubber by tear deviation. This can occur at the colloidal level, as the tear is forced to pass around carbon black aggregates, thus increasing the area of the torn surface. Colloidal tear deviation may be the cause of the in…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSmall-angle x-ray scattering study of spinodal decomposition in polystyrene/poly(styrene-co-bromostyrene) blendsHermann Meier and Gert R. StroblCite this: Macromolecules 1987, 20, 3, 649–654Publication Date (Print):March 1, 1987Publication History Published online1 May 2002P…
Pyruvate formate-lyase (PFL) (formate acetyltransferase; EC 2.3.1.54) of oral streptococci is essential for metabolizing sugar into volatile compounds (formate, acetate, and ethanol). This enzyme is extremely sensitive to oxygen, and its activity is irreversibly inactivated by oxygen. When Streptococcus sanguis was an…
A historical review is given on the proton tunneling model in KH2PO4 type ferroelectrics with reference to the experimental results which have been believed to be evidences of the model. Some of the theoretical results based on the model are shown to be inconsistent with recent dynamical experimental results suggestin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystallization-induced asymmetric transformation: stereospecific synthesis of a potent peripheral CCK antagonistPaul J. Reider, Paul Davis, David L. Hughes, and Edward J. J. GrabowskiCite this: J. Org. Chem. 1987, 52, 5, 955–957Publication Date (Print):March 1, 1987Publicat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly dispersed rhodium on alumina catalysts: influence of the atmosphere on the state and dispersion of rhodiumM. I. Zaki, G. Kunzmann, B. C. Gates, and H. KnoezingerCite this: J. Phys. Chem. 1987, 91, 6, 1486–1493Publication Date (Print):March 1, 1987Publication History P…