Customs transit in the South American countries

Reseña los antecedentes institucionales del transporte terrestre internacional por carretera en Sudamérica: el tránsito aduanero en los convenios de transporte internacional: el tratamiento del tránsito aduanero en la ALALC; interés de los ministros de obras públicas y de transporte de los países del Cono Sur en el Convenio TIR; otras actividades.

Subvención, regulación y propiedad del transporte colectivo en la región metropolitana de Buenos Aires

Documento a ser presentado al seminario sobre transporte colectivo, Buenos Aires, agosto 1990

Estudio de flujos en el corredor San Pablo-Buenos Aires: informe de síntesis

Incluye Bibliografía

TIC, educación y diversidad: el Plan Integral de Educación Digital de la Ciudad de Buenos Aires

Incluye bibliografía

Qué es un BRT, o la implementación del metrobús en la ciudad de Buenos Aires, Argentina

En este boletín FAL se presenta una caracterización del Metrobús de la Ciudad Autónoma de Buenos Aires, analizando de manera preliminar, los resultados de este sistema recientemente implementado.

What is BRT? Rolling out the Metrobús in Buenos Aires, Argentina

This issue of the FAL bulletin describes the Metrobús line which recently started operating in Buenos Aires and provides a preliminary analysis of its performance.

A poesia do romance: Memorial de Aires, um caso exemplar

Pós-graduação em Letras - IBILCE

Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre from dairy cow diets

The objective of this study was to evaluate the behaviour of fibre in the digestive tract on the basis of the passage kinetics of forage and concentrate particles in cows fed different omega-6 fatty-acid sources. The scientific hypothesis of this study was that omega-6 fatty acids do not interfere with the digestion of fibre in the diets of dairy cows. Five primiparous lactating Holstein cows were used in the experiment. The experimental diets were: control (C), ground soyabean (GS), cottonseed (CS), soyabean oil (SO), calcium salts of fatty acids (CSFA). The global mean estimates for the parameters of passage rate (gamma) were 0.038 and 0.055 h(-1) for forage and concentrate, respectively. The only significant effect with respect to the passage rate was a high negative correlation between the concentrate passage rate and dry matter intake. There was less undegradable neutral detergent fibre (NDF) in treatments without added lipid. Dietary supplementation with lipid sources does not alter the kinetic parameters of roughage and concentrate particle passage or in vitro NDF degradation. Sources of omega-6 fatty acids do not alter the rumen degradation and transit of fibre.