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Influence ot the curing temperatures on the evolution of the compression strength of concretes made with different typer of cements

Manuel Fernández Cánovas1991-06-01Materiales de Construccion

In this paper we present the results obtained in the studies carried out on evolution of the compressive strength of identical concretes made with different types of cements based on the spanish standard UNE 80 301 when they are subjected to critical temperatures (5 °C and 35 °C), compared with the same concretes cure…

Editorial

Rosa M.ª Esbert Alemany1991-06-01Materiales de Construccion

Titelei

作者信息未提供1991-06-01Applied Rheology

Electrochromic Behavior of Nickel Oxide Electrodes: II . Identification of the Bleached State by Raman Spectroscopy and Nuclear Reactions

S. Cordoba-Torresi、Anne Hugot‐Le Goff、S. Joiret1991-06-01Journal of The Electrochemical Society

Three different types of nickel oxide electrochromic films are colored and bleached in 1 M KOH solution: porous NiO prepared by anodic oxidation of nickel, NiO ( OH ) x obtained by reactive evaporation, and Ni ( OH ) 2 cathodically deposited. Their crystallographic and chemical identification in the colored and bleach…

Analytical Chemistry and SensorsTransition Metal Oxide NanomaterialsConducting polymers and applications

Is There a Growing Correlation Length near the Glass Transition?

Chandan Dasgupta、A. V. Indrani、Sriram Ramaswamy 等 4 位作者1991-06-01Europhysics Letters (EPL)

We present the results of a molecular-dynamics study on a Lennard-Jones mixture. Measurements of density and bond-angle correlation functions show that the answer to the question posed in the title is NO. We also show that icosahedral order plays no special role in the glass transition, but that a normalized measure o…

Thermodynamic properties of mixturesMaterial Dynamics and PropertiesTheoretical and Computational Physics

Octahedral occupancy and the chemical composition of diagenetic (low-temperature) chlorites

Stephen Hillier、B. Velde1991-06-01Clay Minerals

Abstract The chemical composition of about 500 diagenetic chlorites, determined by electron microprobe, has been studied in six different sedimentary sequences spanning conditions from early diagenesis to low-grade metamorphism, in the temperature range 40–330°C. The range of Fe/(Fe + Mg) is almost complete and is pos…

Geological and Geochemical AnalysisClay minerals and soil interactionsCrystal Structures and Properties

1991 Whitney Award Lecture: Inhibitors—An Old Remedy for a New Challenge

G. Trabanelli1991-06-01OpenAlex

This lecture initially presents the results of systematic research performed to interpret the mechanisms of corrosion inhibitors in various environments. The behavior of several series of S-containing and N-containing compounds has been investigated by radiochemical, electrochemical, gravimetric, and micrographical te…

Hydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and DurabilityCorrosion Behavior and Inhibition

The energetics and structure of nickel clusters: Size dependence

C. L. Cleveland、Uzi Landman1991-06-01OpenAlex

The energetics of nickel clusters over a broad size range are explored within the context of the many-body potentials obtained via the embedded atom method. Unconstrained local minimum energy configurations are found for single crystal clusters consisting of various truncations of the cube or octahedron, with and with…

Machine Learning in Materials Sciencenanoparticles nucleation surface interactionsBoron and Carbon Nanomaterials Research

The glass transition of organic liquids confined to small pores

Catheryn L. Jackson、Gregory B. McKenna1991-06-01OpenAlex

The glass-transition temperatures, Tg, of organic liquids confined to small pores were studied by differential scanning calorimetry (DSC). The Tg was measured as a function of pore size in controlled pore glasses (CPG) having pore diameters in the range of 40–730 Å. The surface of the glass was treated with hexamethyl…

Glass properties and applicationsMaterial Dynamics and PropertiesPhotochemistry and Electron Transfer Studies

One-step synthesis of hyperbranched dendritic polyesters

Craig J. Hawker、R. Lee、Jean M. J. Fréchet1991-06-01OpenAlex

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOne-step synthesis of hyperbranched dendritic polyestersC. J. Hawker, R. Lee, and J. M. J. FrechetCite this: J. Am. Chem. Soc. 1991, 113, 12, 4583–4588Publication Date (Print):June 1, 1991Publication History Published online1 May 2002Published inissue 1 June 1991https://pubs…

Synthesis and Characterization of Heterocyclic CompoundsDendrimers and Hyperbranched PolymersClick Chemistry and Applications

Hydrophobic effects on simple organic reactions in water

Ronald Breslow1991-06-01OpenAlex

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrophobic effects on simple organic reactions in waterRonald BreslowCite this: Acc. Chem. Res. 1991, 24, 6, 159–164Publication Date (Print):June 1, 1991Publication History Published online1 May 2002Published inissue 1 June 1991https://pubs.acs.org/doi/10.1021/ar00006a001ht…

Molecular Junctions and NanostructuresCovalent Organic Framework ApplicationsMembrane-based Ion Separation Techniques

Transition from “Supercapacitor” to “Battery” Behavior in Electrochemical Energy Storage

B. E. Conway1991-06-01OpenAlex

The storage of electrochemical energy in battery, "supercapacitor," and double‐layer capacitor devices is considered. A comparison of the mechanisms and performance of such systems enables their essential features to be recognized and distinguished, and the conditions for transition between supercapacitor and "battery…

Conducting polymers and applicationsSupercapacitor Materials and FabricationFuel Cells and Related Materials