Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIntramolecular coupling in metal-free binuclear phthalocyaninesElaine S. Dodsworth, A. B. P. Lever, Penny Seymour, and C. C. LeznoffCite this: J. Phys. Chem. 1985, 89, 26, 5698–5705Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Publish…
The textural attributes of 8 different heat‐induced protein gel preparations evaluated by torsion failure testing and Instron texture profile analysis (TPA) were compared to sensory ratings by a trained texture profile panel. The gels presented a wide range of textural properties as determined by the instrumental and…
Abstract The thickness, length, width, area and perimeter of 575 particles from 16 aqueously dispersed samples of a variety of interstratified clays, smectites and illite have been recorded using TEM techniques. Complete dispersion of the clay material was achieved by saturating the clay with either Na + or Li + , rem…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPoly(pyrrol-2-ylium tosylate), electrochemical synthesis and physical and mechanical propertiesKenneth J. Wynne and G. Bryan StreetCite this: Macromolecules 1985, 18, 12, 2361–2368Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Publishe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSteric and electronic control of iron porphyrin catalyzed hydrocarbon oxidationsMario J. Nappa and Chadwick A. TolmanCite this: Inorg. Chem. 1985, 24, 26, 4711–4719Publication Date (Print):December 1, 1985Publication History Published online1 May 2002Published inissue 1 Dece…
A metastable phase with the point group symmetry m35 but no ordinary translation symmetry has been found in rapidly quenched (Ti 1−xVx)2Ni alloys with × = 00-0-3 by electron diffraction and high-resolution electron microscopy.
The class of ‘‘facilitated’’ kinetic Ising models introduced in a recent letter is investigated in greater detail. An interpretation of the models in terms of relaxation processes in dense fluids is described. Various types of kinetic behavior are predicted for the different spin models: (A) Arrhenius temperature depe…
Leader peptidase cleaves the amino-terminal leader sequences of many secreted and membrane proteins. We have examined the function of leader peptidase by constructing an Escherichia coli strain where its synthesis is controlled by the arabinose B promoter. This strain requires arabinose for growth. When the synthesis…
A molybdenum containing austenitic steel was exposed in hydrochloric acid at various potentials in the active and passive ranges of the alloys. The surface compositions were analyzed by the ESCA technique. The influence of pretreatment by ion bombardment and mechanical polishing on the passivation behavior was investi…
The equations governing long-wavelength, low-frequency excitations in icosahedral quasicrystals are derived. It is found that while the speeds of the propagating modes are isotropic, the attenuations are not, implying that purely macroscopic experiments can in principle distinguish quasicrystals from crystals, glasses…
This work, a completion of which started in (1), studies the evolution of the mechanical flexural strain of different ranges of mortar samples of 1 X 1 X 6 cm (12 samples/ranges/age/solution) made with sulphoresistant portland cement (P-450-Y, according to RC-75), submerged in filtered drinking water and in the follow…
The study of the suitability of a material for its use as an active addition to the cement and, really, the evaluation of its puzzolanic capacity is a problem which is frecuently present. In this work, a line of behaviour to approach this problem is explained in a practical and definite way, pointing methods of possib…
The petrographical characterization of three spanish sandstones from Villamayor (Salamanca), Somió and Tazones (Asturias) is presented. The significance of the percentage and type of the clay minerals cementing the grains on the pore system geometry, for the rocks studied, is especially emphasized. Besides, correlatio…
In this work, classification and definitions of the additives used to produce concretes, mortars and plasters which base is cement, aim and application field of the UNE 83-200-84 norm (edited on December 1984) elaborated by Working Group n.º 2 "Additives" of the IRANOR Technical Commission n.º 83 "Concretes", are stud…
For the purpose to obtain data for a next revision of the Spanish Concrete Norm about the content of fines in sands fixed to date on 5 % without exceptions, an exhaustive research project has been undertaken. Following, the results of the influence of different contents of calcareous and clayey fines in mortar mechani…
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…