Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The emeraldine oxidation state of polyaniline in its base form, “emeraldine base” can be solution-processed to yield large flexible films which can be doped to the metallic conducting regime (σ ∼ 1-5 S/cm). The approximate solubility of emeraldine base at room temperature in 80% aqueous acetic acid, 60% and 88% aqueou…
Elongational data on a large number of polyethy lene sam pies with different structures and their blends are presented in order to evaluate the influence of the molecular weight and molecular weight distribution for a given degree of long chain branching. The elongational viscosity rises with the number of branch poi…
An experimental 512-b random-access memory based on ferroelectric-capacitor storage cells has been successfully fabricated and tested. The device was designed solely for use in process development and electrical characterization and includes onboard test circuitry for that purpose. The internal timing of the memory is…
Experimental investigations and applications of advanced ceramics are discussed in reviews and reports presented at the Third International Conference on Ultrastructure Processing of Ceramics, Glasses, and Composites held in San Diego in February 1987. Sections are devoted to precursors and chemistry for ultrastructur…
A novel amphiphilic porphyrin carrying poly(oxyethylene) side chains of controlled chain length was obtained by polymerization of epoxyethane initiated by an aluminium porphyrin [(5,10,15,20-tetraphenylporphyrinato)-aluminium chloride] in the presence of a porphyrin with phenolic substituents [5,10,15,20-tetrakis(4′-h…
A copper(I) complex containing two entwined dpp ligands (dpp = 2,9-diphenyl-1,10-phenanthroline), each covalently linked to a pyrrole sub-unit, has been synthesized; electropolymerization of the complex generates a conductive film on platinum or glassy carbon, which can be reversibly de- and re-metallated.
The energy levels of the molybdenum atom, in all stages of ionization for which experimental data are available, have been compiled. Ionization energies, either experimental or theoretical, and experimental g-factors are given. Leading components of calculated eigenvectors are listed.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe electrochemical doping reactions of the conducting ladder polymer benzimidazobenzophenanthroline (BBL)K. Wilbourn and Royce W. MurrayCite this: Macromolecules 1988, 21, 1, 89–96Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Publishe…
Abstract A lap shear joint method was used to study strength development during welding of polystyrene surfaces‐ The surfaces previously had not been in contact and care was taken to insure rapid wetting of the interface. The shear stress at failure, τ f was measured at room temperature as a function of contact time,…
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Abstract The initial conditions needed for formation of moulins are crevasses and a supply of melt water. Water pouring into a crevasse may fill it until it overflows at the lowest point, which is normally near the margin. However, as the crevasse deepens, it intersects englacial channels through which the water can d…
Abstract In many highly weathered soils crop exploitation of subsoil moisture reserves is severely curtailed by toxic levels of Al. Since vertical movement of lime is usually extremely slow in such soils, specialized mechanical and/or chemical procedures are required to overcome the problem. A field experiment with ma…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerization of monomers containing functional silyl groups. 5. Synthesis of new porous membranes with functional groupsJae Suk Lee, Akira Hirao, and Seiichi NakahamaCite this: Macromolecules 1988, 21, 1, 274–276Publication Date (Print):January 1, 1988Publication History P…
The development of refractory metal alloys for aerospace applications is reviewed. Refractory metals are prime candidates for many high temperature aerospace components because of their high melting points and inherent creep resistance. The use of refractory metals is often limited, however, by poor room temperature p…
A novel high activity, carbon supported, gold catalyst for acetylene hydrochlorination which can be successfully reactivated by HCl treatment is reported.
Novel Preisach-type models of hysteresis are introduced. Their distinctive feature is their ability to describe dynamic properties of hysteresis nonlinearities. The identification problem of fitting dynamic Preisach models to experimental data is discussed. Some recommendations concerning numerical implementation of t…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Saad A. Khan, Carol A. Schnepper, Robert C. Armstrong; Foam Rheology: III. Measurement of Shear F…
Local maxima and other singularities distinguish the temperature range 200-320°C in the electrostrictive versus temperature graph of Na0.5Bi0.5TiO3, known from other experiments as a region of coexistence of phases. Investigation of the pyroeffect in virgin Na0.5Bi0.5TiO3 single crystals reveals the existence of polar…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReduced halides of the rare-earth elementsGerd MeyerCite this: Chem. Rev. 1988, 88, 1, 93–107Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Published inissue 1 January 1988https://pubs.acs.org/doi/10.1021/cr00083a005https://doi.org/10.1…
Abstract The structure of skin layer in injection‐molded polypropylen which displayed a clear two‐phase structure of skin and core has been studied by means of wide‐angle x‐ray diffraction, small‐angle x‐ray scattering, melting behavior, density, dynamic viscoelasticity, and tensile test. In skin layer, the c‐axis and…