74 resultados para Déri Múzeum


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Description based on: 1948-1956.

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Presenta las conclusiones y recomendaciones del Taller que tuvo por objetivo analizar la incorporacion de la dimension ambiental en la planificacion del desarrollo, la dimension ambiental en el Proyecto DRI-SUR, y las politicas ambientales de los organismos internacionales de financiamiento para el desarrollo.

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Digitalisat der Ausg. Ṿilne, 1929

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Mode of access: Internet.

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In v. 1-37, 1903-1944, the Latin title precedes; v. 38-41, 1945-1948, have only the Latin title.

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Printed materials about the first Jewish museum in Vienna, Austria, which existed 1895 to 1938. Also included is a biography about Maurice (Moritz) Bronner, curator at the museum 1910-1914, by his son, Felix Bronner. Folder 2 holds copies of 2 photographs of Maurice Bronner, circa 1910 and 1965.

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The COREX melter gasifier is a countercurrent reactor to produce liquid iron. Directly reduced iron (DRI), noncoking coal, and other additives are charged to the melter gasifier at their respective temperatures, and O-2 is blown through the tuyeres. Functionally, a melter gasifier is divided into three zones: a moving bed, fluidized bed, and free board. A model has been developed for the moving bed, where the tuyere region is two-dimensional (2-D) and the rest is one-dimensional (1-D). It is based on multiphase conservation of mass, momentum, and heat. The fluidized bed has been treated as 1-D. Partial equilibrium is calculated for the free board. The calculated temperature of the hot metal, the top gas, and the chemistry of the top gas agree with the reported plant data. The model has been used to study the effects of bed height, injection of impure O-2, coal chemistry, and reactivity on the process performance.

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In this paper we present a new method for measuring diffusion coefficients in liquid metals under convection-less conditions with solid/liquid-liquid/solid trilayer. The advantage of this kind of trilayer is that effects from gravity-induced convection and Marangoni-convection can be omitted, so that the diffusion coefficient is determined more accurately. The Ta/Zn-Sn/Si trilayer were prepared with a multi-target ion-beam sputtering deposition technique and annealed in an electric furnace under an argon atmosphere. The interdiffusion of liquid zinc and tin at 500 degrees degree C was investigated. The diffusion concentration profiles were determined by energy dispersive spectroscopy. The interdiffusion coefficients range from 1.0x10(-6)cm(2)/s to 2.8x10(-6)cm(2)/s, which is less than previous values measured by capillary reservoir technique under 1g-environment where various convection exist. The precise interdiffusion coefficients of liquid zinc and tin result from the removing of disturbances of various kinds of convection.