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Modelling the Solidification Microstructure Formation of Cobalt Dendritic Alloys

03-Nov-2004 | H. Mancha-Molinar, F. Cepeda-Tijerina, M. M. Cisneros-Guerrero, J. Méndez-Nonell, J. Orona-Hinojos, Journal of Materials Synthesis and Processing, 2004

In the present work a mathematical model has been developed to explain the microstructure characteristics obtained during the solidification process of dendritic cobalt alloys, under ordinary low cooling rate conditions. The model, taking into account physical aspects such as undercooling, ...


The Zeolite Micropore as a Unique Reaction Field for the Selective Catalytic Reduction of NO by Hydrocarbon

31-Oct-2004 | Atsushi Satsuma, Akira Shichi, Tadashi Hattori, CATTECH, 2004

Zeolite micropores offer unique reaction fields for catalytic reactions based on narrow pores, a wide variety of channel structure, ion exchangeability and strong solid acids. As a negative effect, narrow pore and channels may suppress the diffusivity of reactant molecules and reduce the catalyst ...


Effect of N-Methyl Substituents in 2-Methoxycarbonylphenylsulfamides on Kinetics and Mechanism of Formation of (1H)-2,1,3-Benzothiadiazin-4(3H)-One-2,2-Dioxides

19-Feb-2004 | Miloš Sedlák, Jaromír Kaválek, Vladimír Machácek, Vojeslav Šterba, Molecules Online, 2004

The cyclization reactions of N-methyl-N'-(2-methoxycarbonylphenyl)sulfamide (1a), N-methyl-N-(2-methoxycarbonylphenyl)-sulfamide (2a), and 2-methoxycarbonylphenylsulfamide (3a) were studied in aqueous amine buffers (butylamine, ethanolamine, morpholine, glycinamide). The dependences observed ...


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