Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTImplications of large RGA-elements on control performanceSigurd Skogestad and Manfred MorariCite this: Ind. Eng. Chem. Res. 1987, 26, 11, 2323–2330Publication Date (Print):November 1, 1987Publication History Published online1 May 2002Published inissue 1 November 1987https://…
A model is presented of the steps involved in the manufacturing process of semicrystal line thermoplastic matrix composites. The model relates the temperature and pressure ap plied during processing to a) the flow of the matrix into the fiber tow, b) the formation of contact and bond between adjacent plies, and c) the…
Type I procollagen was purified from the medium of cultured human fibroblasts incubated with 14C-labeled amino acids, the NH2-terminal propeptides were cleaved with procollagen N-proteinase, and the resulting pC-collagen was isolated by gel filtration chromatography. pC-collagen did not assemble into fibrils or large…
Abstract The size of the minor phase in an immiscible polymer blend can have a significant effect on properties such as the impact strength. Few studies, however, have quantitatively considered the parameters controlling the size of the dispersed phase. In this paper, light and scanning electron microscopy have been u…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCation or solvent-induced supermolecular phthalocyanine formation: crown ether substituted phthalocyaninesNagao Kobayashi and A. B. P. LeverCite this: J. Am. Chem. Soc. 1987, 109, 24, 7433–7441Publication Date (Print):November 1, 1987Publication History Published online1 May…
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 Douglass S. Kalika, Morton M. Denn; Wall Slip and Extrudate Distortion in Linear Low‐Density Poly…
Probably the strongest uncharged nitrogen bases are readily accessible, unusually stable oligophosphazenes such as 1–3 (pKa(H2O)≤29–30). They are efficient dehydrohalogenating reagents for primary and secondary halides and exhibit low nucleophilicity. Their stability is revealed by, among other things, the fact that 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTrivacant heteropolytungstate derivatives. 3. Rational syntheses, characterization, two-dimensional tungsten-183 NMR, and properties of tungstometallophosphates P2W18M4(H2O)2O6810- and P4W30M4(H2O)2O11216- (M = cobalt, copper, zinc)Richard G. Finke, Michael W. Droege, and Pe…
Neutral amino acid (NAA) transport across the blood-brain barrier was examined in pentobarbital-anesthetized rats with an in situ brain perfusion technique. Fourteen of 16 plasma NAAs showed measurable affinity for the cerebrovascular NAA transport system. Values of the transport constants (Vmax, Km, KD) were determin…
Abstract The effect of the microstructure on the coercive field of sintermagnets is investigated on the basis of the theory of micromagnetism. From the linearized micromagnetic equations nucleation fields are determinded for magnetic inhomogeneities with quasi‐harmonic spatial variations of the magnetocrystalline anis…
The cathodic polarization of the electrodes sputtered on yttria stabilized zirconia electrolyte was studied at 800°C in air. The system showed high electrode activity for oxygen reduction. The study of the electrode resistance as functions of and temperature revealed that the rate‐determining steps for oxygen reductio…
Abstract Dolomite rock textures can be classified according to crystal size distribution and crystal boundary shape. The classification scheme presented here is largely descriptive but carries genetic implications because size distribution is controlled by both nucleation and growth kinetics, and crystal boundary shap…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA modified UNIFAC group-contribution model for prediction of phase equilibria and heats of mixingBent L. Larsen, Peter Rasmussen, and Aage FredenslundCite this: Ind. Eng. Chem. Res. 1987, 26, 11, 2274–2286Publication Date (Print):November 1, 1987Publication History Published…
1. An Introduction to Electron Energy-Loss Spectroscopy.- 1.1 Interaction of Fast Electrons with a Solid.- 1.2. The Electron Energy-Loss Spectrum.- 1.3. The Development of Experimental Techniques.- 1.4. Comparison of Analytical Methods.- 1.4.1. Ion-Beam Methods.- 1.4.2. Incident Photons.- 1.4.3. Electron-Beam Techniqu…
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The current status and prospects are examined of the rapidly developing field that studies the structure and properties of lyotropic nematic liquid crystals. Typical amphiphiles are presented, and systems based on them. Typical textures and their optical properties are examined. The physical properties of nematics are…
Cathodoluminescence studies of the 3.188 eV vibronic band in 12 C and 13 C synthetic diamonds show that the sharp peaks at around 3.0 eV are local-mode replicas of the zero-phonon line. Accurate measurement of the isotope shifts shows that one of these modes involves the vibration of a single nitrogen atom. This inter…
A woven, double velour Dacron vascular graft was made nonporous by coating it with a layer of collagen prepared from fresh, young calf skin. Grafts were implanted in the thoracic aorta of 24 mongrel dogs and were examined at intervals up to 180 days. The grafts did not require preclotting or special preparation before…
Absolute electron scattering cross sections for argon, krypton and xenon have been measured at low electron energies using the powerful technique of photoelectron spectroscopy. The measurements have been carried out at electron energies varying from 0.7 to 10 eV with an accuracy of +or-2.7%. The cross sections obtaine…
We report the first observation of the absence of the photodarkening (PD) effect in bulk chalcogenide glasses. In the prototype systems ${\mathrm{Cu}}_{\mathrm{x}}$(${\mathrm{As}}_{0.4}$${\mathrm{S}}_{0.6}$${)}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$ and ${\mathrm{Cu}}_{\mathrm{x}}$(${\mathrm{As}}_{0.4}$${\mathrm{Se}}_{…