Atlas and Catalogue of the Diatom Types of Friedrich Hustedt
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Materials Literature
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Oxomanganese(IV) porphyrins identified by resonance Raman and infrared spectroscopy. Weak bonds and the stability of the half-filled t2g subshell
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxomanganese(IV) porphyrins identified by resonance Raman and infrared spectroscopy. Weak bonds and the stability of the half-filled t2g subshellRoman S. Czernuszewicz, Y. Oliver. Su, Michael K. Stern, Kathleen A. Macor, Dongho. Kim, John T. Groves, and Thomas G. SpiroCite t…
PHOTOSYNTHETIC PIGMENTS IN FIFTY‐ONE SPECIES OF MARINE DIATOMS1
ABSTRACT The photosynthetic pigments of 51 species (71 isolates) of tropical and sub‐tropical diatoms from 13 out of 22 families were examined. These were the Thalassiosiraceae, Melosiraceae, Coscinodiscaceae, Rhizosoleniaceae, Biddulphiaceae, Chaetoceraceae, Lithodesmiaceae, Eupodiscaceae, Cymatosiraceae, Diatomaceae…
Neutron and x-ray scattering studies on semicrystalline polymer blends
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNeutron and x-ray scattering studies on semicrystalline polymer blendsT. P. Russell, H. Ito, and G. D. WignallCite this: Macromolecules 1988, 21, 6, 1703–1709Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 June 1988https…
Dynamics of Layered Interfaces Arising from Phase Boundaries
The dynamics of a material in two phases is studied in the context of phase-field models based on a Landau–Ginzburg free energy functional. They consist of a system of two nonlinear diffusion equations for the temperature and order parameter. The interface between the two phases is treated as a moving internal layer i…
Fast Monte Carlo simulation of MBE growth
A new algorithm is proposed for Monte Carlo simulation of MBE growth. The algorithm is based on using conditional probabilities to select the sites at which events occur. This has the advantage of being economic on computer time, the time per event scaling as the square root of the number of sites in the system. It is…
d10-d10 Interactions: multinuclear copper(I) complexes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTd10-d10 Interactions: multinuclear copper(I) complexesKenneth M. Merz Jr. and Roald HoffmannCite this: Inorg. Chem. 1988, 27, 12, 2120–2127Publication Date (Print):June 1, 1988Publication History Published online1 May 2002Published inissue 1 June 1988https://pubs.acs.org/doi…
Theory of transport processes in single crystal growth from the melt
Abstract The quality of large semiconductor crystals grown from the melt for use in electronic and optoelectronic devices is strongly influenced by the intricate coupling of heat and mass transfer and melt flow in growth systems. This paper reviews the present state of understanding of these processes starting from th…
Petrophysical caracterization and weatherability of the stones of the Seville Cathedral
The petrographical characteristics of the principal types of calcareous materials used in the construction of the Seville Cathedral, as well as some significant physical and deformational properties are presented. Artificial ageing tests were also carried out for evaluating the weatherability of those stones, both fro…
La resistencia mecánica a compresión como parámetro para el control y seguimiento de la arena normalizada ARENAS en el lETcc. 2.ª Parte
This work presents, the process for the continue quality control of the "standardized sand", which is used in the resistance mechanic essays in the cement mortars. With this finality, are exposed the different measures for the control of the apparatus and instruments that have been used to obtain a homogeneity in the…
Noticias
Arenas normalizadas españolas. Su preparación. ARENAS en el lETcc. 1.ª Parte
In 1919, the Ministry of Public Works made the Central Laboratory responsible for all referring to sands with respect to the evaluation of tensile and compressive strengths of cement mortar. After 1956, the then Technical Institute of Construction and Cement took over the preparation and supply of this type of Spanish…
Bibliografía
Analysis of results of tests carried out on earth test pieces
A series of test pieces of 4x4x16 were prepared from Red Earth from Soria, the physical-chemical characteristics of which are given. The effect of each of the following upon the test pieces was studied: increasing the amount of cement on different earth/sand proportions; the type of cement; the variation of the cement…
Reactivity and burnability of cement raw materials witt high manganese content
It has been verified that high manganese content in raw mixes causes alters the mineralogical composition of clinkers. New phases like 2 CaO.Mn02 and Ca2AIMnO5 are developed and C3A formation can be inhibited. Manganese is a flux similar to iron in the traditional raw mixes. The presence of manganese will modify the e…
Editorial
Phenomenal Colors and Sorites
Nontrans has been used as a stick with which to beat sense-datum theorists as well as to cast doubt on the possibility of giving a rational reconstruction of the semantics of everyday color terms. In both cases, what is called into question is the coherence of phenomenal color predicates, or, alternatively, the concep…
Bonding-state characterization of constituent elements in phyllosilicate minerals by XPS and NMR
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBonding-state characterization of constituent elements in phyllosilicate minerals by XPS and NMRA. R. Gonzalez-Elipe, J. P. Espinos, G. Munuera, J. Sanz, and J. M. SerratosaCite this: J. Phys. Chem. 1988, 92, 12, 3471–3476Publication Date (Print):June 1, 1988Publication Hist…
Oscillatory convection in liquid metals in a horizontal temperature gradient
Abstract When growing semiconductor crystals from the melt, the free convection induced in the liquid phase by the imposed thermal boundary conditions can become periodic in time. Recently, the onset of this oscillatory convection has been simulated directly through solution of the time‐dependent governing equations f…
New solvable model of polymer-chain adsorption at a surface
We solve exactly for the polymer adsorption transition in the two- and three-dimensional directed self-avoiding walk models, by employing a novel transfer-matrix approach. The behavior of the fraction of adsorbed monomers at the threshold and in the high-coverage regime is described in detail, as is the phase diagram…