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Equipo Editorial1994-09-01Materiales de Construccion
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Analysis of Internal Stress Relaxation in an Al/SiC Composite by Neutron Diffraction
Las sales solubles en el deterioro de rocas monumentales. Revisión bibliográfica
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…
Selective sandstone deterioration in the cathedrals of Salamanca, Textural anisotropy as a cause
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…
Effect of Matrix Modification on the Mechanical Response of PP/Mg(OH)2/EPR Ternary Composites with Controlled Phase Morphology
TABLE OF CONTENTS
Composition-Dependent Properties of Heterogeneous Polymers: Application of Step-by-Step Averaging Approach. I. Heat Conductivity
Influencia del tipo de curado sobre un conglomerante cal-toba-yeso
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…
Role of Defect Interaction in Boundary Mobility and Cation Diffusivity of CeO 2
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…
Asymmetric Drainage in Foam Films
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/…
Molecular cloning and characterization of the pgm gene encoding phosphoglucomutase of Escherichia coli
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…
On the Modeling of Fracture of Brittle Solids
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…
Paraelectric-Ferroelectric Transition in the Lamellar Thiophosphate CuInP2S6
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTParaelectric-Ferroelectric Transition in the Lamellar Thiophosphate CuInP2S6A. Simon, J. Ravez, V. Maisonneuve, C. Payen, and V. B. CajipeCite this: Chem. Mater. 1994, 6, 9, 1575–1580Publication Date (Print):September 1, 1994Publication History Published online1 May 2002Publ…
Influence of the surface chemistry on the wettability of stainless steel
Abstract Degreasing with solvents, chemical etching, polishing, oxygen and argon plasma treatment and heating and drying produce stainless‐steel surfaces with different amounts of organic contamination and ‘bonded water’. The hydroxide/oxide layer of the passive film formed on stainless‐steel foils is also affected by…
Highly ordered structure of icosahedral quasicrystals in Zn-Mg-RE (RE ≡ rare earth metals) systems
A new group of stable icosahedral phases (i-phases) in the Zn-Mg-RE system were found to have an ideal composition close to Zn50 Mg42RE8 (RE ≡ Y, Gd, Tb, Dy, Ho or Er). The new i-phases exhibit a highly ordered and nearly perfect face-centred icosahedral lattice as revealed by electron and X-ray diffraction and high-r…
Design of high temperature Engineering Test Reactor (HTTR)
Construction of High Temperature Engineering Test Reactor (HTTR) is now underway to establish and upgrade basic technologies for HTGRs and to conduct innovative basic research at high temperatures. The HTTR is a graphite-moderated and helium gas-cooled reactor with 30 MW in thermal output and outlet coolant temperatur…
Molecular Tailoring Approach for Simulation of Electrostatic Properties
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Tailoring Approach for Simulation of Electrostatic PropertiesShridhar R. Gadre, Rajendra N. Shirsat, and Ajay C. LimayeCite this: J. Phys. Chem. 1994, 98, 37, 9165–9169Publication Date (Print):September 1, 1994Publication History Published online1 May 2002Published…
Domain formation and elastic long-range interaction in ferroelectric perovskites
On the basis of a Ginzburg-Landau model for ferroelectric perovskites, we calculate an effective free energy for a polarization field by eliminating elastic fields which are coherently induced by inhomogeneous configurations of polarizations. We obtain elastic long-range interaction between polarization fields on an a…
Eigenmode method for electromagnetic synthesis of diffractive elements with three-dimensional profiles
We extend the rigorous eigenmode theory of binary surface-relief gratings to accommodate three-dimensional-modulation profiles, to formulate a synthesis problem for doubly periodic resonance-domain diffractive elements, and to demonstrate some of the problem’s symmetry properties. Several solutions for multiple beam s…
Temperature–Time Texture Transition of Pb(Zr 1− x Ti x )O 3 Thin Films: I, Role of Pb‐rich Intermediate Phases
Lead‐rich intermediate phases, in particular Pt 5–7 Pb and PbO, are found to form on Pt(111) atop Ti–buffered Si substrates prior to formation of Pb(Zr 1− x Ti x )O 3 (PZT) thin films. Pt 5–7 Pb is a [111] textured transient intermetallic phase that nucleates PZT[111] texture. PbO is a [001] textured layer compound th…