Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal stability of isocyanate-based polymers. 1. Kinetics of the thermal dissociation of urethane, oxazolidone, and isocyanurate groupsP. I. Kordomenos and J. E. KrestaCite this: Macromolecules 1981, 14, 5, 1434–1437Publication Date (Print):September 1, 1981Publication His…
Cross-linking with glutaraldehyde with subsequent NaDodSO4-polyacrylamide gel electrophoresis has been introduced as a convenient method for studying the association of oligomeric proteins [Hermann, R., Rudolph, R., & Jaenicke, R. (1979) Nature (London) 277, 243-245]. In the present paper, an improved version of this…
In this paper we report the purification of a protein which is able to catalyze both the proline oxidase and the pyrroline-5-carboxylic acid dehydrogenase activities necessary for the oxidation of proline to glutamic acid. The purification involves the preparation of a crude membrane pellet, detergent solubilization,…
We have observed charge-density-wave (CDW) phase transitions in the cubic spinel structure Cu${\mathrm{V}}_{2}$${\mathrm{S}}_{4}$. At 90 K a CDW forms with a reduced wave vector $\stackrel{\ensuremath{\rightarrow}}{\mathrm{q}}=(\frac{1}{4}\ensuremath{-}\ensuremath{\delta})[110]$. The incommensurability $\ensuremath{\d…
Abstract Proportions of the component layers in randomly interstratified illite-smectites can be determined precisely in the presence of discrete illite if two reflections (at 15–16 and 31–32°2 θ Cu K α ) are strong enough to be measured accurately. The method takes into account the variable thickness of the smectite-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamic behavior of automotive catalysts. 1. Catalyst oxidation and reductionRichard K. HerzCite this: Ind. Eng. Chem. Prod. Res. Dev. 1981, 20, 3, 451–457Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published inissue 1 September 19…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of a complex with a carbide bridge between two iron atoms from the reaction of (tetraphenylporphyrin)iron(II) with carbon tetraiodideDaniel Mansuy, Jean Pierre Lecomte, Jean Claude Chottard, and Jean Francois BartoliCite this: Inorg. Chem. 1981, 20, 9, 3119–3121Pub…
Abstract Honessite and hydrohonessite from Unst, Shetland, and Linden, Wisconsin, are sulphate-containing members of the pyroaurite group and are analogous to reevesite. The structural formula can be written (Ni 5.55 Mg 0.10 Fe 2.35 3+ )(OH) 16 (SO 4 ) 1.18 . x H 2 O for the Unst material, with sulphate groups replaci…
Abstract The oxygen reduction characteristics of metalloporphyrins adsorbed at monolayer levels on a high surface area carbon, Norit BRX, have been studied in 8 N H 2 SO 4 and also in 6N KOH. In an acid, oxygen reduction activity is found to be correlated with the Me II /Me III redox potential. Most Co complexes have…
Blood compatibility has been studied for hydrophilic polymers such as poly(vinyl alcohol) (PVA), its derivative, and polyethylene grafted with water-soluble monomers. The surfaces in contact with electrolyte solutions have been characterized by measuring the zeta potentials. The study of plasma protein adsorption on t…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical characterization of hydrous ferric oxides by x-ray photoelectron spectroscopyDavid T. Harvey and Richard W. LintonCite this: Anal. Chem. 1981, 53, 11, 1684–1688Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published inissue…
Initial results in over 50 patients with stroke suggest that positron images made during continuous inhalation of carbon dioxide labeled with oxygen 15 and molecular oxygen labeled with oxygen 15 provide data on tissue function that may be relevant to acute stroke management. Five cases illustrate the following findin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe nature of organosilane to silica-surface bondingThomas G. Waddell, Donald E. Leyden, and Mary T. DeBelloCite this: J. Am. Chem. Soc. 1981, 103, 18, 5303–5307Publication Date (Print):September 1, 1981Publication History Published online1 May 2002Published inissue 1 Septem…
Examples are given of recent abuses or debatable applications of the R-factor ratio test (\cal R) for the assignment of absolute configuration, and it is shown that some of the enhanced ratios that have been used do not necessarily imply a statistically significant reduction in α, the probability of making a wrong ass…
A complete list of (3 + 1)-dimensional superspace groups is presented. These groups describe the symmetry of incommensurate crystal structures with a one-dimensional modulation. A short discussion is given of applications. Extinction rules and Bravais types are tabulated in order to facilitate the determination of the…
"Experimental High-resolution Electron Microscopy." Optica Acta: International Journal of Optics, 28(9), p. 1173
The new edition of this practical microscopy guide includes additional material on high-resolution images of periodic structures and associated techniques. It provides both a view of the fundamental principles of electron microscopy and detailed practical information needed to record the images. Various theoretical re…
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