Tolerância à dessecação de sementes de cafeeiro (Coffea arabica L.)

Endophytic bacteria in Coffea arabica L.

Eighty-seven culturable endophytic bacterial isolates in 19 genera were obtained from coffee plants collected in Colombia (n = 67), Hawaii (n = 17), and Mexico (n = 3). Both Gram positive and Gram negative bacteria were isolated, with a greater percentage (68%) being Gram negative. Tissues yielding bacterial endophytes included adult plant leaves, various parts of the berry (e.g., crown, pulp, ...

Teste De Tetrazólio Em Sementes De Abobrinha

The objective of this research was to develop an appropriate tetrazolium methodology for viability and vigor evaluation of squash seeds. The following procedures were tested for preconditioning of the seeds: moistening in wet paper towel for 16 to 24h at 25°C; immersion in water for 15, 30 and 60 minutes at 40°C for tegument removal, and for 30 and 60 minutes for removal of the embryo surroundi...

Adaptation du Virus de l'Echtyma Contrgieux à la Culture de Cellules de Singe

Contribution à l'étude de la maladie athéromateuse

C&L: Uma Ferramenta de Apoio à Engenharia de Requisitos

This paper presents an experimental tool to support requirements engineering activities. This tool, called C&L, is based on two techniques to model software requirements, Scenarios and the Extend Lexicon of the Language. C&L supports a cooperative process to edit Scenarios and the Lexicon. It aims to maintain the traceability between requirements and code. C&L is one of the Requirements Enginee...