The industrial policy debate

Includes bibliography

Grupos de desempeño económico en los países de América, 1955-2003

Incluye Bibliografía

Economic performance clubs in the Americas: 1955-2003

Includes bibliography

El debate sobre política industrial

Incluye Bibliografía

Inbreeding depression on production and reproduction traits of buffaloes from Brazil

The objective of this study was to evaluate the influence of inbreeding depression on traits of buffaloes from Brazil. Specifically, the traits studied were body weight at 205 and 365 days of age, average daily gain from birth to 205 days (ADG_205), average daily gain between 205 and 365 days (ADG205_365) in Mediterranean buffaloes, and milk yield, lactation length, age of first calving and calving intervals in Murrah buffaloes. Inbreeding effects on the traits were determined by fitting four regression models (linear, quadratic, exponential and Michaelis-Menten) about the errors generated by the animal model. The linear model was only significant (P<0.05) for growth traits (exception of ADG205_365). The exponential and Michaelis-Menten models were significant (P<0.01) for all the studied traits while the quadratic model was not significant (P>0.05) for any of the traits. Weight at 205 and 365 days of age decreased 0.25kg and 0.39kg per 1% of increase in inbreeding, respectively. The inbred animals (F=0.25) produced less milk than non-inbred individuals: 50.4kg of milk. Moreover, calving interval increased 0.164 days per 1% of increase in inbreeding. Interestingly, inbreeding had a positive effect on age at first calving and lactation length, decreasing age of first calving and increasing lactation length. © 2012 Japanese Society of Animal Science.

Association between Pseudonocardia symbionts and Atta leaf-cutting ants suggested by improved isolation methods

Fungus-growing ants associate with multiple symbiotic microbes, including Actinobacteria for production of antibiotics. The best studied of these bacteria are within the genus Pseudonocardia, which in most fungus-growing ants are conspicuously visible on the external cuticle of workers. However, given that fungus-growing ants in the genus Atta do not carry visible Actinobacteria on their cuticle, it is unclear if this genus engages in the symbiosis with Pseudonocardia. Here we explore whether improving culturing techniques can allow for successful isolation of Pseudonocardia from Atta cephalotes leaf-cutting ants. We obtained Pseudonocardia from 9 of 11 isolation method/colony component combinations from all 5 colonies intensively sampled. The most efficient technique was bead-beating workers in phosphate buffer solution, then plating the suspension on carboxymethylcellulose medium. Placing these strains in a fungus-growing ant-associated Pseudonocardia phylogeny revealed that while some strains grouped with clades of Pseudonocardia associated with other genera of fungus-growing ants, a large portion of the isolates fell into two novel phylogenetic clades previously not identified from this ant-microbe symbiosis. Our findings suggest that Pseudonocardia may be associated with Atta fungus-growing ants, potentially internalized, and that localizing the symbiont and exploring its role is necessary to shed further light on the association.

Políticas sociales: repensando el desarrollo esencial

Incluye Bibliografía

Tabasco: características e impacto socioeconómico de las lluvias extremas de 2008

Incluye Bibliografía

Hacia la calidad total: la difusión de las Normas ISO de la Serie 9000 en la industria argentina

Incluye Bibliografía

Regulación e inversiones en el sector eléctrico argentino

Incluye Bibliografía

El desempeño industrial argentino más allá de la sustitución de importaciones

Incluye Bibliografía

Evolución del comercio exterior de la industria manufacturera argentina: de la economía semicerrada a la apertura comercial (1974-1997)

Incluye Bibliografía

El proceso de inversiones en la economía argentina: impacto de las reformas de política y procesos de decisión ante un cambio de incertidumbre

Incluye Bibliografía

Regulación de las inversiones en el sector eléctrico argentino

Incluye Bibliografía