Materials Literature
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A series of 66 terpolymers of dl-lactide, glycolide, and epsilon-caprolactone was synthesized for the purpose of identifying those materials which exhibited rapid degradation in vitro. Polymers having half-lives from a few weeks to several months were identified. The morphology of each material was characterized by di…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA quasi-tetrahedral tetracopper cluster with syn-anti bridging carboxylate groups: crystal and molecular structure and magnetic propertiesEnrique Colacio, Jean Pierre Costes, Raikko Kivekas, Jean Pierre Laurent, and Jose RuizCite this: Inorg. Chem. 1990, 29, 21, 4240–4246Pub…
Quantum-confinement effects in CdSe microcrystallites in a glass matrix are investigated in the nanosecond time domain. The results of pump–probe and single-beam absorption saturation measurements show strong evidence for electron–hole quantization in the semiconductor microstructures, a different bleaching behavior f…
Machine learning (ML) is transforming all areas of science. The complex and time-consuming calculations in molecular simulations are particularly suitable for an ML revolution and have already been profoundly affected by the application of existing ML ...Read More
Silica glasses were prepared by three different techniques, vapor phase axial deposition method, oxidation of SiCl4 in O2-H2 flame, and O2 or O2-Ar plasma method with changing preparation conditions. This was done with the expectation that O2 molecules dissolve in the glasses with different concentrations by using a w…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIonically crosslinkable polyphosphazene: a novel polymer for microencapsulationSmadar Cohen, M. Carmen Bano, Karyn B. Visscher, Marie Chow, Harry R. Allcock, and Robert LangerCite this: J. Am. Chem. Soc. 1990, 112, 21, 7832–7833Publication Date (Print):October 1, 1990Publica…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxalato-bridged and related dinuclear copper(II) complexes: theoretical analysis of their structures and magnetic couplingSantiago Alvarez, Miguel Julve, and Michel VerdaguerCite this: Inorg. Chem. 1990, 29, 22, 4500–4507Publication Date (Print):October 1, 1990Publication Hi…
It frequently occurs that a biological assembly in a crystallographic asymmetric unit has more than one noncrystallographic symmetry operator. For instance, a tetramer might have the point group 222 or a spherical virus will have the point group 532. A self-rotation function searches for the direction and angle of rot…
Article Geometrische Größen und einfache Modellrechnungen für BO4-Gruppen was published on October 1, 1990 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 191, issue 1-4).
Abstract not Available.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolythioamide synthesis through chemical modification of polyamidesMylene Deletre and Guy LevesqueCite this: Macromolecules 1990, 23, 22, 4876–4878Publication Date (Print):October 1, 1990Publication History Published online1 May 2002Published inissue 1 October 1990https://do…
Abstract A relative increase of the lattice parameters equal to 2.05 × 10 −3 ± 1.8 × 10 −4 is established by X‐ray analysis in ultradisperse powder diamond with average size of crystallites equal to 4.6 ± 0.4 nm as compared with the lattice parameter of a large‐crystal sample. The effect found for diamond as well as t…
Abstract Ausgehend von dem bekannten Konzept der lokalen Dauerfestigkeit werden Probleme bei dessen Anwendung auf martensitische Randschichten, insbesondere Laserhärtungsschichten, erörtert. Es wird eine Methode für die Berechung der Dauerfestigkeit randschichtgehärterer Proben bzw. Bauteile aus martensitisch härtbare…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCarbon dioxide activation by a transition metal-silicon bond. Formation of silanecarboxylate complexes [Cp2Sc[.mu.-O2CSiR3)]2Brian K. Campion, Richard H. Heyn, and T. Don TilleyCite this: Inorg. Chem. 1990, 29, 22, 4355–4356Publication Date (Print):October 1, 1990Publication…
Krejsa, R. J., Bringas, P. Jr. & Slavkin, H. C. 1990 10 15: A neontological interpretation of conodont elements based on agnathan cyclostome tooth structure, function, and development. Lethaia, Vol. 23, pp. 359–378. Oslo. ISSN 0024–1164. Speculation about a conodont-cyclostome connection has led us to search for and e…
Synopsis Oil-in-water emulsions stabilized with nonionic emulsifiers change to water-in-oil emulsions as the temperature rises when the hydrophilic and lipophilic properties of the mixed emulsifier are just balanced. Preparation above the phase inversion temperature followed by rapid cooling yields emulsions that exhi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics and mechanism of polythioamidation in solution. 1. Reaction of mono- and bis(dithioester)s with excess amineMylene Deletre and Guy LevesqueCite this: Macromolecules 1990, 23, 22, 4733–4741Publication Date (Print):October 1, 1990Publication History Published online1…
Abstract New highly sensitive thermoluminescence detectors of universal application on the basis of anion-defect a-Al2O3:C single crystals have been developed. The decisive role of non-stoichiometry in forming luminescence properties of crystals has been ascertained by methods of optical, luminescent and exoemission s…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new class of silicon compounds with interesting nonlinear optical effectsGerard Mignani, A. Kramer, G. Puccetti, I. Ledoux, G. Soula, J. Zyss, and R. MeyrueixCite this: Organometallics 1990, 9, 10, 2640–2643Publication Date (Print):October 1, 1990Publication History Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAqueous solutions of poly(ethyloxazoline) and its lower consolute phase transitionF. P. Chen, A. E. Ames, and L. D. TaylorCite this: Macromolecules 1990, 23, 21, 4688–4695Publication Date (Print):October 1, 1990Publication History Published online1 May 2002Published inissue…