Materials Literature
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Abstract The molar mass distribution of polyethylenes synthesized at pressures up to 2500 bar and temperatures to 255°C with thermal and partly with photochemical initiation is determined by GPC. In the limiting situation of high pressure, low temperature, and small conversion a distribution function based on a limite…
Transformation range viscosity was measured for multicomponent fluorozirconate glasses in the system 0.56ZrF 4 ·(0.34‐x)BaF 2 ·0.06LaF 3 ·0.04AlF 3 ·xRF, where R =Li, Na, K, or Cs . The results indicate that the viscosity of these glasses can be described by an Arrhenius equation over the viscosity range from 10 7 to…
Article Ungewöhnliche lineare, oligomere Anionen [GanSe2n+2](n + 4)- (n =2,4,6) in festen Selenogallaten des Cäsiums was published on August 1, 1984 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 166, issue 1-4).
Abstract An investigation was made into the effect of coupling agents on the rheological behavior and processability of polypropylene. For the study, each of the following three commercially available coupling agents, a titanate coupling agent (Kenrich Petrochemicals, KR‐TTS) and two silane coupling agents (Union Carb…
Abstract Das neue Oxid Na 4 SnO 3 (hellgelbe, klare Einkristalle) aus: 1. NaO 0,45 und SnO (Na:Sn 2+ = 4,1:1; Ag‐Bömbchen; 600 bis 730°C, 7 bis 66 d); 2. NaO 0,45 , SnO 2 und Sn ±0 (Na:Sn 4+ : Sn ±0 = 8,2:1:1; Ag‐Bömbchen; 650 bis 680°C, 2 bis 66 d); 3. NaO 0,45 , Na 2 SnO 3 und Sn ±0 (Na: Na 2 SnO 3 : Sn ±0 = 6,1:1:1…
At lower concentrations, polyarginine, polylysine, protamine, histones H1, H2A, H2B and H3 cause lysis of human erythrocytes, whereas at higher concentrations inner histones are not hemolytic but induce only surface condensation and alterations in the cell-shape. Antibody coated erythrocytes treated with polyarginine…
Abstract A semicrystalline polymer having a large repeat unit, as does nylon‐11, is particularly suitable for seeking correlation between the orientation of the lattice and the basal planes of the lamellar crystals. In filter mats of nylon‐11 single crystals, the basal planes of the lamellae are parallel to (00l) crys…
Abstract The exchange of Na, K, and Ca ions in vermiculite has been studied between 50 and 150°C at a total normality of 0.1. The free energy changes were negative in the Na → K, Ca → K, and Na → Ca exchange reactions, and the cation preference in the vermiculite was Na < Ca < K in the temperature range examined…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplexes of dimolybdenum(II) with DL-amino acidsFrancoise Apfelbaum-Tibika and Avi BinoCite this: Inorg. Chem. 1984, 23, 18, 2902–2905Publication Date (Print):August 1, 1984Publication History Published online1 May 2002Published inissue 1 August 1984https://pubs.acs.org/doi…
Specimens of nacre from the pearl oyster Pinctada margaritifera were loaded in bending to various fractions of the load needed to cause fracture. For a small number of cycles, less than about 1000, no changes in compliance or strength were found if the load was less than about 60% of the load necessary to cause failur…
Abstract Primary amine and pyridine‐initiated polymerizations of L‐proline‐ N ‐carboxyanhydride (Pro‐NCA) at 20 or 100°C yield exclusively or predominantly 10 3 ‐helices. Only primary amine‐initiated polymerizations in 1,4‐dioxane at 100°C result in partial formation of 3 1 ‐helices. The stability of both 10 3 ‐ and 3…
In order to estimate the influence of the helium pressure on the corrosion of ferritic and austenitic materials, tests were carried out under 2 absolute bar in a circuit without helium recirculation and under 50 bar in the AIDA loop. In both cases the partial pressures of impurities were 1.500, 50, 450, and 50 μatm fo…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCobalt-59 NMR of a cobalt(III) spin-crossover compoundGil Navon and Wolfgang KlaeuiCite this: Inorg. Chem. 1984, 23, 17, 2722–2725Publication Date (Print):August 1, 1984Publication History Published online1 May 2002Published inissue 1 August 1984https://pubs.acs.org/doi/10.1…
Article Die Kristallstruktur von Na4CaSi3O9 und dessen strukturelle Beziehungen zu K4SrGe3O9 und Ca3Al2O6 was published on August 1, 1984 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 166, issue 1-4).
Hannelore Håkansson, R. Ross, (755)-(757) Proposals to Designate Conserved Types for Cymbella C. Agardh and Cyclotella (Kützing) Brébisson, and to Conserve Rhopalodia O. Müller against Pyxidicula Ehrenberg (All Bacillariophyceae), Taxon, Vol. 33, No. 3 (Aug., 1984), pp. 525-531
Large errors are possible in critical-angle measurements of the refractive index of optical absorbers. These arise from the dependence of the reflectivity and transmissivity of a plane optical interface on the imaginary part of the complex relative refractive index. The errors are calculated directly from the Fresnel…
▪ Abstract The phase-field method has recently emerged as a powerful computational approach to modeling and predicting mesoscale morphological and microstructure evolution in materials. It describes a microstructure using a set of conserved and ...Read More
Abstract Experimental techniques have been developed to produce and measure large amplitude one dimensional compression and shear waves in a polyurethane elastomer (Solithane 113). Experimental measurements consisted of time‐resolved compression and shear amplitude measurements at different distances from the impact s…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation U. Bertocci, F. I. Thomas, E. N. Pugh; Technical Note: Stress Corrosion Cracking of Brass in Aqueous Ammon…
Abstract CsCu 2 Cl 3 und CsCu 2 Br 3 wurden auf trockenem Wege durch Synproportionierung von Gemengen CsX/2 CuX (X = Cl, Br) bzw. CsCuCl 3 mit der Gefäßwand eines Cu‐Bömbchens als metallischem Substrat in Form von Einkristallen erhalten. Es ist für CsCu 2 Cl 3 (CsCu 2 Br 3 ): a = 950,75(9) (987,3(1)), b = 1189,8(2) (1…