Aislamiento de Escherichia coli enteroadsiva (K99) en terneros con sindrome diarreico.

Confirmed nucleotide sequence of fanF of Escherichia coli K99 fimbriae.

Analysis of a naturally occurring K99+ enterotoxigenic Escherichia coli strain that fails to produce K99.

A spontaneously occurring field isolate of enterotoxigenic Escherichia coli that was genotypically K99+ but phenotypically K99- was analyzed for the reason that it did not express K99. The defect, which was cis active, was located within an area 5' to the first gene required for K99 biogenesis and was the result of the deletion of a single base pair.

Intercesión en invocaciones de métodos con la reflexión de Java

Software systems require maintenance to modify them, this involves stopping the system’s execution and apply the changes. Reflection allows to get the executing system’s information and let adapt the system without any interruption. The intercession in Java programming language is limited only in writing into fields, therefore it is not possible to modify the program’s behavior. This paper feat...

Clasificación de polaridad en textos con opiniones en español mediante análisis sintáctico de dependencias

This article describes an opinion mining system that classifies the polarity of Spanish texts. We propose a nlp-based approach which performs segmentation, tokenization and pos tagging of texts to then obtain the syntactic structure of sentences by means of a dependency parser. The syntactic structure is then used to address three of the most significant linguistic constructions in the area in ...

Resultados a corto plazo de angioplastía de rescate en pacientes con infarto agudo de miocardio con trombólisis fallida