Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntermediate-spin (S = 3/2) porphyrinatoiron(III) complexesDavid H. Dolphin, John R. Sams, and Tsang Bik. TsinCite this: Inorg. Chem. 1977, 16, 3, 711–713Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Published inissue 1 March 1977https:/…
Abstract and Summary The photo‐sensitized oxidation of methyl linolenate and methyl oleate was studied using erythrosine and riboflavin as sensitizers. The complex mixtures of hydroperoxides obtained were analyzed for the proportion of conjugated products and, after reduction to the corresponding mixtures of hydroxyst…
MnBi particles were prepared by grinding sintered MnBi in a ball mill. The coercivity of these MnBi particles was measured at 300 K and 85 K. At 300 K, the coercivity increased remarkably by grinding, and showed the highest value of 16000 Oe. At 85 K, the coercivity was very low compared with that at 300 K, and was ab…
The influence of water vapor pressure on the equilibrium sodium vapor densities over well‐stirred silica‐based glass melts was investigated. Sodium was assumed to be present in the vapor as Na and NaOH molecules, and the activity of Na.O in the melt was calculated as a function of water vapor pressure above the melt.
Electron paramagnetic resonance studies of Mo3+ ion in NH4Al(SO4)2⋅12H2O single crystals are made at X-band frequencies and at room temperature. It is found that there are four magnetically inequivalent complexes of Mo3+ ion in the lattice which exhibit tirgonal symmetry. The angular variation of the fine structure li…
The program discussed was designed to improve weld quality in Ti-662 sheet. The approach was based on establishing an alloy addition which could be introduced to the weld puddle via the welding filler metal and would provide a relatively homogeneous fine precipitate for grain size control. Yttrium was selected because…
Abstract The work reported here concerns the peroxide crosslinking of ethylene–vinyl acetate rubber. Calculated values for scission‐to‐crosslinking ratios are higher for EVA than for low‐density polyethylene. In the temperature range from 150 to 200°C at a constant peroxide content, a rise in temperature results in a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and electrochemistry of a new platinum "tetrathiolene" cluster, tetrakis(triphenylphosphine)tetrathionaphthalenediplatinum(II,II): a novel system with five reversible oxidation statesBoon-Keng Teo, F. Wudl, J. H. Marshall, and A. KrugerCite this:…
Abstract A method based on the PFT‐NMR technique was developed for a direct determination of unsaturated end groups in PVC. By using NMR proton spectra it was found that the unsaturated groups in PVC contain allylic chlorine atoms. Three types of unsaturated end groups were identified, corresponding to the following m…
The amount and type of borohydride-reducible crosslinks in collagen have been examined as a function of animal age. In a variety of bovine, canine and human tissues the level of redicible crosslinks decreases with time and the ratios of individual compounds change. There is both tissue and species specificity in the e…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular and Crystal Structures of Poly(ethylene oxybenzoate): α FormHiroshi Kusanagi, Hiroyuki Tadokoro, Yozo Chatani, and Kazuaki SuehiroCite this: Macromolecules 1977, 10, 2, 405–413Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNylon-1313 from Brassylic AcidH. J. Nieschlag, J. A. Rothfus, V. E. Sohns, and R. Beltron Perkins Jr.Cite this: Ind. Eng. Chem. Prod. Res. Dev. 1977, 16, 1, 101–107Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Published inissue 1 March 1…
The D-alanine carboxypeptidase of B. subtilis is a membrane-bound enzyme which is inhibited by penicillins and binds them covalently. The enzyme has been labeled with [14C]- or [35S]penicillin. After tryptic or Pronase digestion of the labeled, denatured, reduced, and carboxymethylated enzyme, a radioactive peptide wa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics and Thermodynamics of Interconversion of Macroesters and Macroion Pairs in the Cationic Polymerization of TetrahydrofuranAnna M. Buyle, Krzysztof Matyjaszewski, and St. PenczekCite this: Macromolecules 1977, 10, 2, 269–274Publication Date (Print):March 1, 1977Public…
Abstract Thermally stimulated discharge has been used in the past to diagnose and estimate the magnitude of electrical polarization in polymers. Nevertheless, molecular characterization of operative phenomena by this technique alone is often a difficult task. In the present work, infrared attenuated total reflection s…
A method is presented for the exact nonlinear analysis of reinforced and prestressed concrete slender members subject to biaxial bending. The main feature of the method is the procedure that analyzes the stress-strain state of sections, under given axial force and biaxial moment. The outlined procedure, applied to a n…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWarming-induced reactions in .gamma.-irradiated naphthalene solutions in Freon-mixture glassAkira Kira, Takashi Nakamura, and Masashi ImamuraCite this: J. Phys. Chem. 1977, 81, 6, 511–516Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Publ…
The adsorption of n‐decylamine on zinc from acidic chloride solution has been studied using the corrosion technique. The corrosion rates of zinc in acidic chloride solution containing n‐decylamine are measured as a function of n‐decylamine concentration. The degree of surface coverage as calculated from the corrosion…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic isotope effect on proton tautomerism in tetraarylporphyrinsS. S. Eaton and G. R. EatonCite this: J. Am. Chem. Soc. 1977, 99, 5, 1601–1604Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Published inissue 1 March 1977https://pubs.acs…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn electron spin-lattice relaxation mechanism involving tunneling modes for trapped radicals in glassy matrixes. Theoretical development and application to trapped electrons in .gamma.-irradiated ethanol glassesMichael K. Bowman and Larry KevanCite this: J. Phys. Chem. 1977,…