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Abstract Surface‐enhanced Raman scattering (SERS) spectra of Thiram (C 6 H 12 N 2 S 4 ) and Ferbam (C 9 H 18 N 3 S 6 Fe); and normal Raman scattering (NRS) spectra of Thiram and Metam‐Sodium (C 2 H 4 NNaS 2 ) were investigated. The SERS spectra of the two compounds and NRS spectrum of Metam‐Sodium were recorded for th…
Using the direct measurement of the photosensitized luminescence of singlet molecular oxygen (1O2) the rate constants (kq) have been determined for 1O2 quenching by the monomeric molecules of the following phthalocyanines and naphthalocyanines in chloroform: tetra-(4-tert-butyl) phthalocyanine (I); octa-(3,6-butoxy) p…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDe-SOx catalyst: the role of iron in iron mixed solid solution spinels, MgO.cntdot.MgAl2-xFexO4Jin S. Yoo, Alak A. Bhattacharyya, Cecelia A. Radlowski, and John A. KarchCite this: Ind. Eng. Chem. Res. 1992, 31, 5, 1252–1258Publication Date (Print):May 1, 1992Publication Hist…
The disorder of the ${\mathrm{Ag}}^{+}$ ions in the superionic conductor \ensuremath{\alpha}-AgI has been studied with use of computer simulations in which reorganizations of the ${\mathrm{I}}^{\mathrm{\ensuremath{-}}}$ lattice are inhibited. At high temperatures the ions are evenly distributed over the tetrahedral in…
Effect of MnS inclusions on the stress corrosion cracking (SCC) of low-alloy steel in 288°C oxygenated pure water was studied using slow strain rate tensile (SSRT) test. MnS inclusions dissolve and can act as starting points of SCC. At high amounts of dissolved oxygen (about 8 ppm), pitting corrosion and MnS inclusion…
29 Si MAS‐NMR measurements have been made on a series of lithium borosilicate glasses of general composition R Li 2 O.B 2 O 3 · K SiO 2 . At low alkali contents ( R < 1), the 29 Si resonance envelope is broadened and indicates a distribution of Si sites. As R increases above 1, the FWHM of the 29 Si resonance narro…
The metabolites of the Canadian tuckahoe, the sclerotium of Polyporus tuberaster, have been investigated. The ten-membered lactone tuckolide [1] was isolated, and its structure was determined by spectroscopic methods and confirmed by X-ray crystallography. Ergosterol, ergosterol peroxide, and several unidentified ergo…
The formula of the title compound is no printing error! Instead it announces unusual chemistry. This oxide is subvalent with respect to silver and contains an extremely electron-poor Ag cluster. It therefore seems almost paradoxical that the yellowish shiny metallic oxide is formed under elevated oxygen pressure, that…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and NMR spectroscopy of metallocenium ions. Support for a new ferromagnetic coupling mechanism in decamethylmetallocenium tetracyanoethenidesJanet Bluemel, Nikolaus Hebendanz, Peter Hudeczek, Frank H. Koehler, and Werner StraussCite this: J. Am. Chem. Soc. 1992, 11…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrically conductive metal sulfide-polymer composites prepared by using organosols of metal sulfidesTakakazu Yamamoto, Etsuo Kubota, Atsushi Taniguchi, Somanath Dev, Kuniaki Tanaka, Kohtaro Osakada, and Masao SumitaCite this: Chem. Mater. 1992, 4, 3, 570–576Publication Da…
Fine structural determinations are utilized to illustrate the advantage of the use of mixed oxides as starting materials rather than mixtures of separated oxides, with respect to the expected performance of yttrium‐europium oxide red phosphor for lamps. X‐ray synchrotron diffraction experiments show how improved homog…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray photoelectron spectroscopy study of bulk and colloidal polyanilineM. Aldissi and S. P. ArmesCite this: Macromolecules 1992, 25, 11, 2963–2968Publication Date (Print):May 1, 1992Publication History Published online1 May 2002Published inissue 1 May 1992https://pubs.acs.o…
Molecular-dynamics simulations of several water-crystalline urea interfaces have been performed. The structure and dynamics of water close to the urea crystal surface are discussed in terms of density profiles, positional and orientational distribution functions, and diffusion coefficients. The water structure close t…
The thermal conductivity of heavily doped, n-type Si-Ge alloys has been studied from 300 to 1200 K. The scattering rate of several phonon scattering mechanisms has been calculated, including intrinsic scattering, mass defect and distortion scattering, phonon-electron scattering, and scattering by inclusions. These rat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe mechanism of the desulfurization of benzenethiol by nickel (110)D. R. HuntleyCite this: J. Phys. Chem. 1992, 96, 11, 4550–4558Publication Date (Print):May 1, 1992Publication History Published online1 May 2002Published inissue 1 May 1992https://doi.org/10.1021/j100190a077…
Abstract X‐ray photoelectron spectroscopy (XPS) has been applied to the study of the oxidation state variations of Cr ions in the chromia/zirconia system (CrO x /ZrO 2 ) submitted to redox cycles: O 2 at 773 K (standard oxidation), CO at 673 K (standard reduction) and H 2 O after standard reduction at 743 K. The XPS r…
This paper presents a modification of the block Householder method based on the compact WY representation [R. Schreiber and C. Van Loan, SIAM J. Sci. Statist. Comput., 10 (1989), pp. 52–57]. It is modified in order to introduce more matrix–matrix operations.
The beta-glucosidase encoded by the bglA gene from Bacillus polymyxa was overproduced in Escherichia coli by using a plasmid in which bglA is under control of the lacI promoter. Induction with isopropyl-beta-D-thiogalactopyranoside allowed an increase in the specific activity of the enzyme of about 100 times the basal…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHIV inhibitory natural products. 6. The peltatols, novel HIV-inhibitory catechol derivatives from Pothomorphe peltataKirk R. Gustafson, John H. Cardellina II, James B. McMahon, Lewis K. Pannell, Gordon M. Cragg, and Michael R. BoydCite this: J. Org. Chem. 1992, 57, 10, 2809–…
Nonstoichiometric, anhydrous thin films were produced by sputtering. They can be bleached by means of hydrogen insertion equally fast and efficiently either in an electrochemical cell or in a gas chamber, as demonstrated in this work by using a Pd covered thin film electrode. The electrode mechanical stress and transm…