Materials Literature
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The results of dynamic mechanical testing of five industrially produced partially oriented yams (POY) and two conventionally spun and drawn PA 6.6 filament yams are presented, along with some of their structural parameters. Dynamic mechanical spectra of POY samples differ from conventionally spun and drawn yams across…
The selection of component materials is the first step in order to reach a good quality concrete. The Spanish Code EH-91 point out the different requisites for the component materials used in a normal concrete. However, these requisites may be not sufficient for a high strength concrete (HSC). In this paper we present…
This paper points out the importance of soluble salts in the deterioration/conservation of monumental stones. The most frequent salts in monuments as well as their sources are referred. A review of the damage caused by these salts and the developed mechanisms of deterioration is also included. Finally, the distinctive…
Textural sandstone anisotropy is related to the selective deterioration of such stone in buildings. The samples studied come from the Cathedrals of Salamanca. Stone fragments, cut in different directions with regard to the base supporting the ashlars in the wall, are studied by means of a binocular magnifying glass an…
Mortars with lime-tufa-gipsum binder where studied when submitted to different types of curing. The mortars were prepared with a binder/sand ratio of 1/3 and a/c= 0,7, and they were demoulded after 24 hours. In the tested specimens, variations in values of bending strength, compressive strength and volumetric weight w…
Grain boundary mobility of CeO 2 containing 0.1% and 1.0% trivalent dopant cations (Sc, Yb, Y, Gd, and La, in order of increasing ionic radius) has been measured. At the lower dopant concentration (intrinsic regime), mobility is controlled by grain boundary diffusion of host cations, whereas at the higher dopant conce…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAsymmetric Drainage in Foam FilmsJean-Luc Joye, George J. Hirasaki, and Clarence A. MillerCite this: Langmuir 1994, 10, 9, 3174–3179Publication Date (Print):September 1, 1994Publication History Published online1 May 2002Published inissue 1 September 1994https://pubs.acs.org/…
We report here the identification and characterization of pgm, a gene in Escherichia coli that encodes the enzyme phosphoglucomutase, specifically required for the catalysis of the interconversion of glucose 1-phosphate and glucose 6-phosphate. The predicted amino acid sequence of the pgm gene is highly conserved in E…
Technical Briefs On the Modeling of Fracture of Brittle Solids Y. V. Petrov, Y. V. Petrov IPTRAN, Academy of Sciences of Russia, 12 Linia, 13, St. Petersburg, 199178, Russia Search for other works by this author on: This Site PubMed Google Scholar N. F. Morozov N. F. Morozov Department of Elasticity, St. Petersburg St…