Grupo de trabalho do ISOP entre os anos de 01/01/1958 a 05/03/1964

Zélia Moreira Rebello de Mendonça (3ª pessoa da esquerda para direita)

Engenharia nos sertões nordestinos: o Gargalheiras, a Barragem Marechal Dutra e a comunidade de Acari, 1909-1958

In Brazil, between the late nineteenth and early decades of the twentieth, polytechnic engineers assumed an important role in discussing the establishment of a modern country. The problem of drought in northeastern Brazil gave the professionals performance, within an interventional process more mounts, the conception plans and measures for the purposeful integration of the territory afflicted. With the foundation of Inspetoria de Obras Contra as Secas (IOCS), in 1909, the actions to combat drought and would be institutionalized, them, studies performed out by technical and scientific committees would be systematically applied in the Brazilian Northeast. So, This work was central objective understand the historical process inplantation of a whole infrastructure of modern character by professional technical and their consequences within the Northeast Geographic space, in specific, in the municipality of Acari in the State of Rio Grande do Norte, in the first half of the twentieth century. The politics of the government, through technical education and scientific engineers polytechnics, would emphasize, during the twentieth century, the building of dams, and irrigation canals, wells, railways, highways, between other elements, that would soon transform the physical space-northeast, specifically, the territory acariense. These works began to contribute to the setting of man backcountry their land, promote the regular practice of agriculture even in periods of drought and, the integration, especially, economic of territory acariense the other producing regions of Rio Grande do Norte and the Northeast as well as promoting the modification of the landscape of the world backcountry. These actions functioned as elements of modernity and progress that transformed the space by favoring by favoring the formation of urban networks (urban) in this space

Adsorption of silanes bearing nitrogenated Lewis bases on SiO 2/Si (100) model surfaces

The present paper describes the one-pot procedure for the formation of self-assembled thin films of two silanes on the model oxidized silicon wafer, SiO2/Si. SiO2/Si is a model system for other surfaces, such as glass, quartz, aerosol, and silica gel. MALDI-TOF MS with and without a matrix, XPS, and AFM have confirmed the formation of self-assembled thin films of both 3-imidazolylpropyltrimethoxysilane (3-IPTS) and 4-(N- propyltriethoxysilane-imino)pyridine (4-PTSIP) on the SiO2/Si surface after 30 min. Longer adsorption times lead to the deposition of nonreacted 3-IPTS precursors and the formation of agglomerates on the 3-IPTS monolayer. The formation of 4-PTSIP self-assembled layers on SiO2/Si is also demonstrated. The present results for the flat SiO2/Si surface can lead to a better understanding of the formation of a stationary phase for affinity chromatography as well as transition-metal-supported catalysts on silica and their relationship with surface roughness and ordering. The 3-IPTS and 4-PTSIP modified SiO2/Si wafers can also be envisaged as possible built-on-silicon thin-layer chromatography (TLC) extraction devices for metal determination or N-heterocycle analytes, such as histidine and histamine, with on-spot MALDI-TOF MS detection. © 2005 Elsevier Inc. All rights reserved.

Estudio económico de América Latina 1958 = Economic survey of Latin America 1958

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Introducción: Raúl Prebisch y la agenda del desarrollo en los albores del siglo XXI

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La globalización de Raúl Prebisch

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Raúl Prebisch: un aporte al estudio de su pensamiento

Obra publicada en homenaje del Dr. Prebisch al cumplirse un año de su fallecimiento. Contiene: palabras pronunciadas por el señor Norberto González, Secretario Ejecutivo de la CEPAL en el Instituto de Estudios Internacionales de la Universidad de Chile el 20 de noviembre de 1986; Las cinco etapas de mi pensamiento sobre el desarrollo, artículo presentado por el Dr. Prebisch a un Seminario del Banco Mundial sobre los pioneros del desarrollo; exposición del Dr. Prebisch en el vigésimoprimer período de sesiones de la CEPAL; y una bibliografía de su obra entre 1920 y 1986, recopilación efectuada por la Biblioteca CEPAL/ILPES.

Raúl Prebisch: bibliografía de su obra entre 1920 y 1986

La recopilación incluye materiales existentes tanto en la Biblioteca CEPAL/ILPES como en otras bibliotecas de Santiago y Argentina, así como también en la Sección Archivos de CEPAL.

América Latina en la economía mundial: seminario en homenaje al Dr. Raúl Prebisch

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