Materials Literature
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The infrared and Raman spectra of disordered paraelectric and ordered ferroelectric phases of CsH2PO4 and CsD2PO4 single crystals have been investigated at various temperatures in the 4000–10 and 4000–0 cm−1 range, respectively. An assignment of lattice and internal vibrations in terms of symmetry species and approxim…
The thermal expansion behavior of lithium, sodium, potassium, and rubidium borate glasses was measured. The results indicate that the “borate anomaly” in the thermal expansion coefficient occurs at ∼20 mol% alkali oxide. A maximum in the glass transformation and dilatometric softening temperatures also occurs at ∼27 m…
Using mean field free energy functionals of the type employed by Sullivan, we have investigated the nature of the transition from partial to complete wetting that occurs at a solid-gas interface. We show that this wetting transition can be a first or a second order phase transition. If it is first order, as predicted…
The role of water vapor in crystallite growth and the tetragonal‐to‐monoclinic phase transformation of ZrO 2 was studied using three specially prepared samples: an ultrafine powder of monoclinic ZrO 2 obtained by hydrolysis of ZrOCI 2 , an aggregated powder of tetragonal ZrO 2 obtained by thermal decomposition of Zr(O…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-enhanced Raman scattering by citrate on colloidal silverO. Siiman, L. A. Bumm, R. Callaghan, C. G. Blatchford, and M. KerkerCite this: J. Phys. Chem. 1983, 87, 6, 1014–1023Publication Date (Print):March 1, 1983Publication History Published online1 May 2002Published i…
We studied the attachment of a number of freshwater bacteria from River Sowe, Coventry, England, to test substrata. The attachment of each organism to hydrophobic and hydrophilic surfaces was evaluated, and further studies evaluated the attachment of selected isolates to a number of substrata with a range of water wet…
Previous work has shown that the permanent adhesive of the marine mussel Mytilus edulis is a protein containing large amounts of hydroxyproline (13%) and 3,4-dihydroxyphenylalanine (Dopa, 11%). The protein also known as the polyphenolic protein is produced and stored in the exocrine phenol gland of the mussel and depo…
The present paper points out the importance of three main subjects concerning the presence of sulphur compounds in concrete: i) the maximum sulphate content of concrete aggregates specified in the Spanish concrete standard; ii) the standardized analytical method to determine sulphur compounds in aggregates for concret…
In the present paper, third of the new series started with and industrial portland cement, there is studied the influence exerted by the addition of different quantities of slag to an industrial portand cement (cement 3 < > P-450) in its chemical-resistant behavior when subjected, during various periods of time, to th…
Taking into account the general importance of the item showed in the title, and more particularly that concerning the Spanish Cement Industry considering the present and future energetic circumstances, this report presents the content of the mentioned Colloquim on "The Future of the Spanish Coals". Special mention is…
This report begins with a series of three, comprising the construction of a universal system of ambiental simulation for accelerated tests of materials. If this first publication there are established, on the basis of the specialized bibliography, the criteria which should guide the designing of a system of this type,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTX-ray study of palladium location in Y zeolite during in situ hydrogen reduction, benzene adsorption and benzene hydrogenationG. Bergeret, Tran Manh Tri, and P. GallezotCite this: J. Phys. Chem. 1983, 87, 7, 1160–1165Publication Date (Print):March 1, 1983Publication History…
Monte Carlo calculations for the restricted primitive model at a point in the molten salt region have been made using a variety of summation methods. The empirical conclusion is that the Ewald summation is an excellent method for this work. It is shown that it does not produce significantly anisotropic pair distributi…
In this research the process of formation of a low energy clinker is studied, when fly-ashes (rich in sulphates and lime) and fluorspar are used as raw materials (fly-ashes replaces to the tradicional raw mix partially). The availability of those fly-ashes is shown since clinker at 1.340 °C is obtained. The mineralogi…
A 75,000-dalton protein has been purified approximately 1,000-fold from rat liver, based on its capacity to organize poly(A) in a 27-residue repeating structure. This protein may be identified with the major polypeptide component of cytoplasmic poly(A)-ribonucleoprotein (RNP) previously described. The poly(A)-organizi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCesium and rubidium ion equilibriums in illite clayE. Brouwer, B. Baeyens, A. Maes, and A. CremersCite this: J. Phys. Chem. 1983, 87, 7, 1213–1219Publication Date (Print):March 1, 1983Publication History Published online1 May 2002Published inissue 1 March 1983https://pubs.ac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTActivation of carbon dioxide with aluminum porphyrin and reaction with epoxide. Studies on (tetraphenylporphinato)aluminum alkoxide having a long oxyalkylene chain as the alkoxide groupTakuzo Aida and Shohei InoueCite this: J. Am. Chem. Soc. 1983, 105, 5, 1304–1309Publicatio…
Superlattice spots observed by X-ray and electron diffraction in the tetragonal, metallic, quasi-one-dimensional compounds NbTe 4 and TaTe 4 are interpreted in terms of charge-density waves. It is shown that three slightly different types of columns occur in the crystals. In NbTe 4 at room temperature two types of cha…
Bei der Reaktion von Fe3(CO)12 mit den Dithiolen (II) im Molverhältnis 1:1 entstehen die zweikernigen Komplexe (III), von denen einige bereits mit wesentlich geringerer Ausb. dargestellt wurden.
We present a theory of the dielectric permittivity in which the intermolecular dipole-dipole correlations are treated explicitly. The results for the static permittivity agree with those which have previously been obtained by continuum calculations. The frequency dependence of the permittivity is related to two relaxa…