Materials Literature
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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…
The shear elastic modulus C44 of graphite has been determined by Brillouin scattering from surface waves. The author's value agrees with that obtained from neutron scattering experiments but differs from those determined by ultrasonic technique.
Cathodoluminescence in the 1.40 eV and 2.56 eV systems is observed from most nitrogen-containing synthetic diamonds. The authors show that there is a tendency for the 2.56 eV luminescence to be strong when the 1.4 eV luminescence is strong, and that both are strongest for diamonds grown in the presence of nickel. Abso…
Thermoluminescence measurements of 80 K X-irradiated MgO and MgO:Li single crystals are performed. In pure MgO four glow peaks, observed at 175, 220, 245, and 265 K, are associated with the release of holes from different traps. All these glow peaks show two emission bands at 375 and 700 nm (the latter due to Cr3+ ion…
Space-charge-limited (SCL) currents in materials with quasicontinuous energy distribution of localized states are discussed. A simple analytical method is developed enabling to extract quantitative information about an arbitrary energetic distribution of localized states from a single experimental SCL current-voltage…
In continuation of the investigations of the electrical and thermal conductivity as well as the magneto resistance in the binary system titanium-oxygen for TiOx with metallic conductivity for x < 1.49 the corresponding properties for the semiconductive compounds with 1.49 < x < 2 are measured at low temperatures and m…
Resistivity, Hall-effect, and space-charge---limited---current (SCLC) measurements were performed on InSe single crystals grown by the Bridgman-Stockbarger method. The electrical properties of the investigated samples are dominated by two donor centers at 0.10 and 0.34 eV. The latter donor influences the SCLC at room…
For glassy materials relaxation as a function of time is generally well fitted with the Williams–Watts function exp[−(t/τ0)β] with β≊1/3. One frequently interprets such nonexponential behavior in terms of a superposition of exponential relaxation processes with density ρβ(τ). We have determined ρβ(τ), corresponding to…
A range of high purity type III synthetic silicas (Suprasil 1, Spectrosil, Dynasil 1000) has been subjected to 100 keV X irradiation at 77 K and the induced ESR spectra have been recorded at 100 K before and after successive pulse anneals to higher temperatures. Absolute spin concentrations are determined as functions…
We report photoemission spectra and intensity profiles of the $3d$ emission and the resonant valence-band satellites in NiO and Ni. Ni in Ni metal is in a $3{d}^{9}$ configuration, but Ni in NiO is in a $3{d}^{8}$ configuration. NiO gives an opportunity to study the effect of a larger number of holes in the $d$ config…