Brian E. Bent、Ralph G. Nuzzo、Lawrence H. Dubois1989-03-01Journal of the American Chemical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface organometallic chemistry in the chemical vapor deposition of aluminum films using triisobutylaluminum: .beta.-hydride and .beta.-alkyl elimination reactions of surface alkyl intermediatesBrian E. Bent, Ralph G. Nuzzo, and Lawrence H. DuboisCite this: J. Am. Chem. Soc…
Semiconductor materials and devicesSynthesis and properties of polymersMesoporous Materials and Catalysis
M. T. S. Nair、P. K. Nair1989-03-01Semiconductor Science and Technology
Cu x S thin films with a wide range of sheet resistances (r Square Operator ) and optical transmittance (T%), indicating different composition x, have been obtained from chemical baths constituted from copper(II) chloride, triethanolamine and thiourea at appropriate pH (10-12). Depending on the deposition parameters,…
Copper-based nanomaterials and applicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films
J. F. Legrand1989-03-01Ferroelectrics
P(VDF-TrFE) copolymers with approximately 30 mol% of TrFE content exhibit above room temperature a ferroelectric transition of first order type with a large thermal hysteresis. We present recent investigations of the ferroelectric phase and of the phase transition using several techniques: second harmonic generation o…
Polymer Nanocomposites and PropertiesDielectric materials and actuatorsAdvanced Sensor and Energy Harvesting Materials
Richard A. Gross、Christopher DeMello、Robert W. Lenz 等 5 位作者1989-03-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe biosynthesis and characterization of poly(β-hydroxyalkanoates) produced by Pseudomonas oleovoransRichard A. Gross, Christopher DeMello, Robert W. Lenz, Helmut Brandl, and R. Clinton FullerCite this: Macromolecules 1989, 22, 3, 1106–1115Publication Date (Print):March 1, 1…
biodegradable polymer synthesis and propertiesEnzyme Catalysis and ImmobilizationEnzyme Production and Characterization
Spiros H. Anastasiadis、Irena Gancarz、Jeffrey T. Koberstein1989-03-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCompatibilizing effect of block copolymers added to the polymer/polymer interfaceSpiros H. Anastasiadis, Irena Gancarz, and Jeffrey T. KobersteinCite this: Macromolecules 1989, 22, 3, 1449–1453Publication Date (Print):March 1, 1989Publication History Published online1 May 20…
Polymer Surface Interaction StudiesBlock Copolymer Self-AssemblyMolecular Junctions and Nanostructures
Matthias Ballauff1989-03-01Angewandte Chemie International Edition in English
Abstract Most of the industrial plastics used up to now consist of flexible macromolecules in which the repeat units are joined together in a nonlinear fashion by rotating bonds. Stiff‐chain polymers, which in the ideal case have a rodlike shape, have received much less attention. The reason for this is that such poly…
Advanced Materials and MechanicsLiquid Crystal Research AdvancementsForce Microscopy Techniques and Applications
Anjan Ray、G.E. Asturias、D.L. Kershner 等 6 位作者1989-03-01Synthetic Metals
Redox titration results and electronic spectral evidence show that the oxidation state of the “emeraldine” base form of polyaniline can vary depending on whether its synthesis is performed in the presence or absence of air. Chemical doping of leucoemeraldine, the completely reduced form of polyaniline, to selected oxi…
Conducting polymers and applicationsElectrochemical sensors and biosensorsAnalytical Chemistry and Sensors
J. G. Dash1989-03-01Contemporary Physics
Most solids begin to melt at temperatures well below the bulk transition, by forming surface layers of liquid a few molecules thick. Although it is difficult to detect by direct observation, the phenomenon known as surface melting is believed to play important roles in many technical and natural processes, including t…
Adhesion, Friction, and Surface Interactionsnanoparticles nucleation surface interactionsMaterial Dynamics and Properties
Equipo Editorial1989-03-01Materiales de Construccion
Extractos de los artículos publicados en el n.° 398 de "Informes de la Construcción", número especial dedicado a conmemorar el 40 aniversario de la revista.
Fernando Aguirre de Yraola1989-03-01Materiales de Construccion
Federico Gutiérrez-Solana、Modesto Jáuregui、Ramón Bohigas 等 4 位作者1989-03-01Materiales de Construccion
This work presents the methodological procedure done on the analysis of ancient mortars from two middle-age castles, the one of Camargo (Vlll century) and the Torrejón at Las Henestrosas (XIII century), both in Cantabria. The analysis pretends to get complementary information to the previous one obtained from the arch…
Equipo Editorial1989-03-01Materiales de Construccion
Gabriel Luis Duque Fernández、Julio Cesar Llópiz Yurell、Ester Rubio Frías1989-03-01Materiales de Construccion
The tricalcium silicate (alite) hydration velocity in cements with and without additives is studied in the presence of "Las Carolinas" quarry tuffs from Cienfuegos province, Cuba, the alite hydration velocity is enhanced reaching velocity constants 1.5 higher than in the standard cement.
Edgardo F. Irassar、Oscar R. Batic1989-03-01Materiales de Construccion
Low calcium fly ash has demonstrated to be an effective pozzolan to improve sulfate resistance of ordinary portland cement (type I). In this paper physico-chemical effects that produce this pozzolan in the mortar exposed to sulfate attack are studied. Dilution and dispersion affects are analyzed using mixes of cement…
M. P. de Luxan、M. I. Sánchez de Rojas、M. Frías 等 6 位作者1989-03-01Materiales de Construccion
En este trabajo se estudia la influencia de la presencia de rocas silíceas opalinas, procedentes de las provincias de Salamanca, Zamora y Avila, en las propiedades de los cementos mixtos fabricados con cemento portland y proporciones variables de estas rocas utilizadas como adiciones activas. La caracterización de est…
N. Sanjeeva Murthy、Manfred Stamm、J. P. Sibilia 等 4 位作者1989-03-01Macromolecules
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural changes accompanying hydration in nylon 6N. S. Murthy, M. Stamm, J. P. Sibilia, and S. KrimmCite this: Macromolecules 1989, 22, 3, 1261–1267Publication Date (Print):March 1, 1989Publication History Published online1 May 2002Published inissue 1 March 1989https://pu…
Polymer crystallization and propertiesSurface Modification and SuperhydrophobicityAdvanced Cellulose Research Studies
William L. Brown、Ian Parsons1989-03-01Mineralogical Magazine
Abstract Homogeneous and heterogeneous phase relationships in the alkali feldspars are reviewed, and behaviour diagrams developed. Al,Si ordering is almost certainly continuous and higher order in both albite and potassium feldspar and has been established reversibly or nearly so down to below 500°C in albite and poss…
Clay minerals and soil interactionsGeological and Geochemical AnalysisSoil and Unsaturated Flow
Jan Mewis、William J. Frith、T. A. Strivens 等 4 位作者1989-03-01AIChE Journal
Abstract The non‐Newtonian viscosities of polymerically stabilized colloidal suspensions are usually predicted and correlated on the basis of data and scaling principles for Brownian hard spheres. Here, the specific effect of the stabilizer layer is investigated using suspensions of monodisperse PMMA particles with a…
Rheology and Fluid Dynamics StudiesMaterial Dynamics and PropertiesPhase Equilibria and Thermodynamics
Christy K. Holland、Robert E. Apfel1989-03-01IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control
An approximate analytical formulation is presented that allows for the calculation of acoustic pressure thresholds for transient cavitation over a variety of frequencies and host fluid parameters. Specifically, R.E. Apfel's (1986) theory is extended to include an estimate of the time delay associated with the Laplace…
Fluid Dynamics and MixingUltrasound and Cavitation PhenomenaUltrasound and Hyperthermia Applications
Dennis A. Corrigan、Sandra L. Knight1989-03-01Journal of The Electrochemical Society
Electrochemical and iodometric measurements on anodically charged thin film nickel hydroxide electrodes indicated an average nickel valence of . In situ visible spectroscopy of nickel hydroxide deposited on optically transparent electrodes featured one strong and broad absorption band with an intensity proportional to…
Conducting polymers and applicationsAnalytical Chemistry and SensorsTransition Metal Oxide Nanomaterials