Materials Literature
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This article, explains the necessary steps to obtained a quartz-low quantitative analysis in an anhydrous Portland cement matrix, by means of a simple addition of a little quantity of Corydon to the sample and applying a simple mathematical formula which gives directly the crystalline compound percentage which determi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymers in two dimensions: renormalization group study using three-parameter modelJack F. Douglas, Binny J. Cherayil, and Karl F. FreedCite this: Macromolecules 1985, 18, 12, 2455–2463Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Pub…
We have recently suggested an approximate computer simulation technique, based on the scanning method, which enables one to extract the entropy (and hence the free energy) of polymer chains from a relatively small sample. So far this technique has been discussed in terms of chains with excluded volume (EV); in the pre…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCorrelations between chain parameters and failure characteristics of polymers below their glass transition temperatureShaul M. AharoniCite this: Macromolecules 1985, 18, 12, 2624–2630Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Publi…
The various forms of alteration presented in the monumental sandstones of the “Palacio de Revillagigedo” (Gijón, Spain) are identified, localized and studied. Among them, the alveolation phenomena (honeycomb erosion) stand aut; the morphologically different alveoles are described and their genesis interpreted.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe paramagnetic metal effect on the ligand localized S1 .apprx. .fwdarw. T1 intersystem crossing in the rare-earth-metal complexes with methyl salicylateSeiji Tobita, Masayuki Arakawa, and Ikuzo TanakaCite this: J. Phys. Chem. 1985, 89, 26, 5649–5654Publication Date (Print)…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new crown heteropolyanion K28Li5H7P8W48O184.92H2O: synthesis, structure, and propertiesRoland Contant and Andre TezeCite this: Inorg. Chem. 1985, 24, 26, 4610–4614Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Published inissue 1 Dec…
Two series of dental composites, along with the unfilled resin matrix, were examined to determine the effects of filler level and size on selected properties. Both series were prepared by incorporating a silanated barium borosilicate filler into a visible-light-activated polyphenylene polymethacrylate resin matrix. On…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInduction of peptide conformation at apolar water interfaces. 1. A study with model peptides of defined hydrophobic periodicityW. F. DeGrado and J. D. LearCite this: J. Am. Chem. Soc. 1985, 107, 25, 7684–7689Publication Date (Print):December 1, 1985Publication History Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of the chromium-catalyzed epoxidation of olefins. Role of oxochromium(V) cationsE. G. Samsel, K. Srinivasan, and Jay K. KochiCite this: J. Am. Chem. Soc. 1985, 107, 25, 7606–7617Publication Date (Print):December 1, 1985Publication History Published online1 May 2002…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTToward an ab initio derivation of crystal morphologyZiva Berkovitch-YellinCite this: J. Am. Chem. Soc. 1985, 107, 26, 8239–8253Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Published inissue 1 December 1985https://pubs.acs.org/doi/10.…
The physical principles underlying the oscillatory behavior of minute gas bubbles in liquids exposed to ultrasound are reviewed. Results from mathematical analyses suggest that these oscillations sometimes become unstable leading to transient cavitation in which a bubble violently collapses during a single acoustic ha…
The tetradentate copper(I1) Schiff base complexes CuHAPen and CuSALen react with Gd(C10)4)3 to yield crystalline materials of formula [(CUHAP~~)~G~(H~O)~](C~O,)(I~) .anZdC [U(HCAUPS~A~L ~~)~G~(H,O)~](C~O~)~.~CUSAL~~. 0.5CzH5N02 (II), respectively. Their crystal structures were determined through X-ray diffraction at r…
This paper reviews the flow behavior of concentrated suspensions as may be of interest in the processing of composites and similar polymeric materials. Succinct synopses are arranged at the end of each section. In general, the state of the art is a good one: a small number of experiments on a new formulation frequentl…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolution studies of cellulose in lithium chloride and N,N-dimethylacetamideCharles L. McCormick, Peter A. Callais, and Brewer H. Hutchinson Jr.Cite this: Macromolecules 1985, 18, 12, 2394–2401Publication Date (Print):December 1, 1985Publication History Published online1 May…
Abstract “Hydrothermal synthesis” usually refers to heterogeneous reactions in aqueous media above 100°C and 1 bar. The previously common distinction between hydrothermal conditions below and pneumatolytic conditions above the critical point is no longer made, since no discontinuities are observed upon exceeding the c…
The method of graphical analysis for the evaluation of sequential data (e.g., tissue and blood concentrations over time) in which the test substance is irreversibly trapped in the system has been expanded. A simpler derivation of the original analysis is presented. General equations are derived that can be used to ana…
We consider a new type of nonradiative transitions in nonmetallic solids. The transitions are not accompanied by heat release but by large (compared with interatomic distances) displacements of individual atoms. These instabilities (electrostatic, vibronic, structural), which lead to formation of defects in solid crys…
We have used solution small-angle X-ray scattering to characterize bovine brain calmodulin in the presence and absence of calcium. In the presence of calcium, calmodulin exists in solution as an elongated molecule with a radius of gyration of 21.5 A and a maximum vector length of approximately 62 A. These values are c…
The existence of large-sized satellite faces on crystals of the mineral calaverite (${\mathrm{Au}}_{1\ensuremath{-}x}{\mathrm{Ag}}_{x}{\mathrm{Te}}_{2}$) is reported. These anomalous high-index faces can be related directly to the wave vector q of the displacive incommensurate modulation recently found in the crystal…