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In this paper, the author describes how effects related to dislocation mobility can be incorporated in the instability criterion in a straightforward manner and used to analyze the strain-rate dependence of (Tc). He begins with a simple example and studies the dynamics of a group of dislocations in the vicinity of a c…
Abstract Kinetics of manganese(III) oxidation of L‐arginine has been studied in the presence of pyrophosphate and acetate ions in acidic media at 328 K and 323 K, respectively. The nature of the oxidizing species formed in manganese(III) solutions was determined by spectrophotometric and redox potential measurements.…
In the present paper we address the question of whether localized failure due to elastoplastic bifurcation can be captured within the fixed‐mesh approach. To this end, the theoretical framework of localization analysis of elastoplastic solids is revisited, and examples of weak discontinuities are presented for an elas…
Author: Kang, C. S. et al.; Genre: Journal Article; Issued: 1994; Title: SYNTHESIS AND PROPERTIES OF AROMATIC MAIN-CHAIN POLYESTERS HAVING<br/> DISPERSE RED-1 NONLINEAR-OPTICAL CHROMOPHORES IN THE SIDE-CHAIN
Abstract The kinetics of the H 2 O 2 decomposition by Cu(II)‐, Co(II)‐, and Fe(III)‐amine complexes supported on the surface of silica‐alumina (25% Al 2 O 3 ) catalyst have been investigated. The decomposition process proceeded with first‐order kinetics for the substrate concentration. With copper complexes, in partic…
Disruptions in tokamak reactors are considered a limiting factor to successful operation and a reliable design. The behavior of plasma-facing components during a disruption is critical to the overall integrity of the reactor. Erosion of plasma facing-material (PFM) surfaces due to thermal energy dump during the disrup…
Abstract The six donor‐acceptor spiro compounds spiro[1,3‐dioxolane‐2,2′‐indan]‐1′,3′‐dione ( 8 ), spiro[indan‐2,2′‐[1,3]oxathiolane]‐1,3‐dione ( 9 ), spiro[1,3‐dithiolane‐2,2′‐indan]‐1′,3′‐dione ( 10 ), spiro[1,3‐benzodioxole‐2,2′‐indan]‐1′,3′‐dione ( 11 ), 5‐methylspiro[1,3‐benzodithiole‐2,2′‐indan]‐1′,3′‐dione ( 12…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal expansion and temperature dependence of elastic moduli of aromatic polyamidesDaniel J. Lacks and Gregory C. RutledgeCite this: Macromolecules 1994, 27, 24, 7197–7204Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published iniss…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of Forsterite by Pyrolysis of a Xerogel: The Effect of WaterDong Gon Park, James C. Duchamp, T. Michael Duncan, and James M. BurlitchCite this: Chem. Mater. 1994, 6, 11, 1990–1995Publication Date (Print):November 1, 1994Publication History Published online1 May 2…
Abstract A chain complex, [Mo2{O2CC(CH3)3}4 bpy]n (bpy = 4,4′-bipyridine), was prepared by the reaction of molybdenum(II) pivalate (Mo2{O2CC(CH3)3}4) and bpy. An X-ray crystal analysis showed that the chain structure is formed by alternating Mo2{O2CC(CH3)3}4 and bpy.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDegradation Kinetics of Polyaniline Base and Sulfonated PolyanilineTsung-Chieh Tsai, D. Alan Tree, and Martin S. HighCite this: Ind. Eng. Chem. Res. 1994, 33, 11, 2600–2606Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Published inissu…
Abstract Die bisher unbekannte Kristallstruktur von β‐Cu 3 SbS 3 bei Zimmertemperatur wurde anhand eines verzwillingten Kristalls ermittelt. Die Verbindung kristallisiert monoklin, RG P2 1 /c (Nr. 14) mit a = 7,808(1), b = 10,233(2) und c = 13,268(2) Å, β = 90,31(1)°, V = 1 060,1(2) Å 3 , Z = 8. Eine Extended‐Hückel‐R…
Abstract A peak‐to‐background method was implemented for standardless electron microprobe analysis of bulk samples and particles. First, a study on the choice of the beam entry point was performed; the region of the particle closest to the detector proved to be the most convenient. Then, a very simple algorithm, which…
Telomers of perfluoropropylene with alpha,omega- diiodoperfluoroalkanes were converted to branched-chain difunctional condensation monomers. The reaction of ethylene with the telomers gave alpha, omega-bis(iodoethyl)perfluoroalkanes, which were converted to the corresponding diols by reaction with fuming sulfuric acid…
Equilibrium constants and enthalpy changes for reactions catalyzed by the hydrolase class of enzymes have been compiled. For each reaction the following information is given: The reference for the data; the reaction studied; the name of the enzyme used and its Enzyme Commission number; the method of measurement; the c…
Abstract The crystal structures of the ordinary pressure forms of indium digermanate In 2 Ge 2 O 7 and disilicate In 2 Si 2 O 7 have been studied from X‐ray powder diffraction data by Rietveld refinement. They are closely related to that of the thortveitite which crystallizes in the monoclinic system with the space gr…
Abstract An extrusion‐grade medium‐density polyethylene was fractionated by size exclusion chromatography and selective solvent extraction. The fractions were studied by infrared spectroscopy, differential scanning calorimetry, and transmission electron microscopy. Infrared spectroscopy showed that chain branching was…
Applicability of linear theory to magnetic anisotropy of 3d-4f intermetallics is investigated with particular reference to ${\mathrm{Sm}}_{2}$${\mathrm{Fe}}_{17}$${\mathrm{N}}_{3}$. A general quantitative criterion for the breakdown of the linear theory is established, according to which the theory falls beyond a 20%…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR Studies, Molecular Characterization, and Degradation Behavior of Poly(amido amine)s. 1. Poly(amido amine) Deriving from the Polyaddition of 2-Methylpiperazine to 1,4-Bis(acryloyl)piperazineF. Bignotti, P. Sozzani, E. Ranucci, and P. FerrutiCite this: Macromolecules 1994,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDensity Functional Study of Ethylene Dimerization by (Acetylacetonato)nickel HydrideL. Fan, A. Krzywicki, A. Somogyvari, and T. ZieglerCite this: Inorg. Chem. 1994, 33, 23, 5287–5294Publication Date (Print):November 1, 1994Publication History Published online1 May 2002Publis…