Re-evaluation of antibiotic and mercury resistance in Escherichia coli populations isolated in 1978 from Amazonian rubber tree tappers and Indians

A study was carried out to assess the stability of antimicrobial susceptibility of wild isolates upon long-term storage using fifty-three Escherichia coli strains isolated in 1978 from feces of healthy children from the Amazon region in Brazil, exposed to low levels of antimicrobial agents, and examined for resistance to mercury and four antibiotics. All of the strains were kept in Lignieres medium at room temperature and were transferred to fresh media four times during this period. Thirty-five out of the 53 strains analyzed in 1978 were viable. Upon recovery, antibiotic and mercury resistance was estimated. All of the 35 strains maintained their original phenotype in a stable fashion, except for one multiresistant strain which became susceptible to kanamycin. Fifty-four percent of the strains exhibited a resistance phenotype, among which 47% had conjugative plasmids.

Anuario estadístico de América Latina, 1978 = Statistical yearbook for Latin America, 1978

Incluye Bibliografía

Estudio económico de América Latina 1949 = Economic survey of Latin America 1949

Incluye Bibliografía

Estudio económico de América Latina 1978 = Economic survey of Latin America 1978

Incluye Bibliografía

Os quatro núcleos/eixos de produção da poética de Caio Fernando Abreu

This article presents a short study about the literary work of Brazilian writer Caio Fernando Abreu (1946-1996). In order to study his formal and thematic choices, we established criteria based on concepts like motif and plot (dramatic situation), as developed by Tomachevski (1976). A specific articulation between motives and dramatic situations establishes four nuclei of Abreu's literary production, which is characterized by a literary experimentation with these elements and it constructs an organic work that makes itself and/or is made in a dialogic way (Bakhtin, 1981). Firstly, the main characteristics of the four nuclei and the books that embody them will be presented. Then, we will describe how the motives and dramatic situations are re-elaborated from one nucleus to another. Not only does each nucleus features some new elements, but also contains remainders of previous ones. As such, each of Abreu's works can be considered as both the same and unique.

Estudo econômico da América Latina, 1949

Incluye Bibliografía

Estudio económico de América Latina, 1949: selección

Incluye Bibliografía

The monetary and real effects of the financial opening up of national economies to the exterior: the case of Chile 1975-1978

Includes bibliography

Fernando Fajnzylber: una visión renovadora del desarrollo en América Latina

Incluye Bibliografía

Interpretación del proceso de desarrollo latinoamericano en 1949

Incluye Bibliografía