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Restauración de la Iglesia de San Pedro, en Ávila

The work have been carried out in two consecutive phases. Firstly the four wooden nave forms were sustituted by overdimensioned iron lattice girders that entered the aisles and ended in a capping hoop thus allowing the absorption of the pushes from the vaults that were ruining the church fabric. Besides a careful impe…

Relación de revistas que se pueden consultar en la Biblioteca del lETCC

Estudio de la fluorellesteadita por difracción de rayos X: Propuesta de nuevas líneas de difracción

The Ca10(SiO4)3(SO4)3F2 is synthetized and the reflexions obtained by DRX are studied, comparing them with this registered in the J.C.P.D.S. file which corresponds to the same component. A new listing which includes 27 new reflexions is proposed. Some values of the reflexions given in the file 23-113 are modified as w…

Primera consulta sobre la industria de los materiales de la construcción organizada por ONUDI y UNCHS (HABITAT)

This work, devoted to the First Consultation sponsored by ONUDI-UNCHS (HABITAT) relative to "Building Materials Industry", selects three different sides of it: the final version of the conclusions and recommendations prepared in Athens by the participants, the author personal answers, as a participant himself, to some…

Crystal chemistry of a Mg‐vesuvianite and implications of phase equilibria in the system CaO‐MgO‐Al2O3‐SiO2‐H2O‐CO21

Abstract Chemical analysis (including H 2 , F 2 , FeO, Fe 2 O 3 ) of a Mg‐vesuvianite from Georgetown, Calif., USA, yields a formula, Ca 18.92 Mg 1.88 Fe 3+ 0.40 Al 10.97 Si 17.81‐ O 69.0.1 (OH) 8.84 F 0.14 , in good agreement on a cation basis with the analysis reported by Pabst (1936). X‐ray and electron diffraction…

An electrically conductive plastic composite derived from polypyrrole and poly(vinyl chloride)

Abstract An electrically conductive plastic material was obtained by the electrochemical polymerization of pyrrole in a poly(vinyl chloride) matrix. The transmission electron microscopy shows that polypyrrole is uniformly distributed in the matrix. The conductivity of the composites fall in the range of 5 to 50 S/cm,…

XPS study on surface and bulk palladium oxide, its thermal stability, and a comparison with other noble metal oxides

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTXPS study on surface and bulk palladium oxide, its thermal stability, and a comparison with other noble metal oxidesMarcell PeuckertCite this: J. Phys. Chem. 1985, 89, 12, 2481–2486Publication Date (Print):June 1, 1985Publication History Published online1 May 2002Published i…

Outstanding Problems in the Kaolinite‐Mullite Reaction Sequence Investigated by 29 Si and 27 Al Solid‐state Nuclear Magnetic Resonance: I, Metakaolinite

Structural models previously proposed for metakaolinite are examined in light of the most recent published experimental data and new information obtained by solid‐state high resolution 29 Si and 27 AI NMR. A new model for metakaolinite is proposed, consisting of anhydrous regions of distorted AI‐0 tetrahedra containin…

Phase transitions and soft modes in sodium bismuth titanate

The results of experimental studies of the crystal and domain structures of NaO, 5BiO, 5TiO3 as well as its lattice dynamics, dielectric, optical and other physical properties are considered. Nature of peculiar temperature points is discussed.

Interfacial drag and film height for vertical annular flow

Abstract New measurements are presented for film height and pressure drop for vertical gas‐liquid annular flows. Improved methods for predicting the film height and interfacial friction factor are developed for situations in which the liquid film flow rate is known.

The nature of spin-state transitions in solid complexes of iron(II) and the interpretation of some associated phenomena

ADVERTISEMENT RETURN TO ISSUEPREVArticleThe nature of spin-state transitions in solid complexes of iron(II) and the interpretation of some associated phenomenaEdgar Konig, Gerhard Ritter, and S. K. KulshreshthaCite this: Chem. Rev. 1985, 85, 3, 219–234Publication Date (Print):June 1, 1985Publication History Published…

Electron-transfer reactions associated with host-guest complexation. Oxidation of ferrocenecarboxylic acid in the presence of .beta.-cyclodextrin

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron-transfer reactions associated with host-guest complexation. Oxidation of ferrocenecarboxylic acid in the presence of .beta.-cyclodextrinTomokazu Matsue, Dennis H. Evans, Tetsuo Osa, and Nagao KobayashiCite this: J. Am. Chem. Soc. 1985, 107, 12, 3411–3417Publication…

Relationships between octanol-water partition coefficient and aqueous solubility

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRelationships between octanol-water partition coefficient and aqueous solubilityMichele M. Miller, Stanley P. Wasik, Guo Lan. Huang, Wan Ying. Shiu, and Donald. MackayCite this: Environ. Sci. Technol. 1985, 19, 6, 522–529Publication Date (Print):June 1, 1985Publication Histo…

Shape of unperturbed linear polymers: polypropylene

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTShape of unperturbed linear polymers: polypropyleneDoros N. Theodorou and Ulrich W. SuterCite this: Macromolecules 1985, 18, 6, 1206–1214Publication Date (Print):June 1, 1985Publication History Published online1 May 2002Published inissue 1 June 1985https://pubs.acs.org/doi/1…

Transformation of Yttria‐Doped Tetragonal ZrO 2 Polycrystals by Annealing in Water

Phase changes and the microstructure resulting from low‐temperature annealing of yttria‐doped tetragonal ZrO 2 polycrystals in water were investigated at 65° to 120°C. Tetragonal ZrO 2 on the surface of the sintered body transformed to the monoclinic phase, accompanied by microcracking. The transformation rate in wate…

The rheology of concentrated suspensions of spheres in simple shear flow by numerical simulation

The newly developed simulation method known as Stokesian dynamics is used to investigate the rheological behaviour of concentrated suspensions. Both the detailed microstructure (e.g. pair-distribution function) and the macroscopic properties are determined for a suspension of identical rigid spherical particles in a s…

Diffusion-Controlled Macromolecular Interactions

Diffusion-Controlled Macromolecular Interactions, Page 1 of 1 < Previous page | Next page > /docserver/preview/fulltext/biophys/14/1/annurev.bb.14.060185.001023-1.gif

Interactions between acidic proteins and crystals: stereochemical requirements in biomineralization.

Acidic matrix macromolecules are intimately involved in biological crystal growth. In vitro experiments, in which crystals of calcium dicarboxylate salts were grown in the presence of aspartic acid-rich proteins, revealed a stereochemical property common to all the interacting faces. Calcite crystals are nucleated on…

A second order multiconfiguration SCF procedure with optimum convergence

An MCSCF procedure is described which is based on the direct minimization of an approximate energy expression which is periodic and correct to second order in the changes in the orthonormal orbitals. Within this approximation, the CI coefficients are fully optimized, thereby accounting for the coupling between orbital…