5 research outputs found

    Nutrients Cycle within Swine Production: Generation, Characteristics, Treatment and Revaluation

    Get PDF
    The swine production generates slurries nutrients rich, which could be revaluated in cereal crops used for its food and energy generation (biogas) for use on the farm. However, the revaluation requires to know their physical–chemical and biological characteristics, which allow giving an adequate transformation (treatment). On the one hand, swine production and consumption market reveal the superiority of emergent countries on meat/cereal (feed) production and swine meat consumption (concentrated population). The food composition and growth phase will influence the swine slurries composition, which is rich in organic matter, macronutrients (N, P) and micronutrients (Cu and Zn). These characteristics will generate odors (organic matter, macronutrients) and ecotoxicology effects (macro/micronutrients) if they are not treated. Moreover, the swine slurries treatment allows revaluated them in agriculture and obtaining energy. Anaerobic technologies (anaerobic lagoon, mixed complete reactors, UASB, among others) are the most used/cost-effective to organic matter removal from swine slurries, obtaining from 0.28 to 0.83 m3 biogas/kg organic matter. Meanwhile, passive technologies (constructed wetlands) are the most used technologies to nutrients and metals removal. Treated swine slurries from constructed wetlands have agronomic properties. Therefore, the nutrients cycle within swine production would favor concepts of revaluation in origin

    Lesbianas en América Latina: de la inexistencia a la visibilidad

    Get PDF
    Ser lesbiana en Latinoamérica tiene muchos significados, el principal es la posición política de las que se nombran como tales. La construcción de la identidad lésbica implica la conciencia de la discriminación histórica del ser lesbiana; en la medida en que esta palabra tiene connotaciones negativas en la sociedad, la mayoría de las mujeres que aman a otras mujeres y que tienen relaciones sexo-afectivas con ellas no desean denominarse con esta palabra. Como afirma Alfarache, "el nombre es una marca identitaria que posiciona a las mujeres en el mundo y ante los otros, desde la cual las mujeres definen tanto su autopercepción como sus relaciones con las y los demás"

    El campo médico argentino y su mirada al tribadismo, 1936-1955 The medical argentine field and its look on the tribadism, 1936-1955

    No full text
    Este artículo describe y analiza la articulación discursiva sobre el lesbianismo en el campo médico argentino entre 1936 y 1955. Las "verdades" de la medicina poseen una fuerza normativa que constituyen un lugar privilegiado para propiciar la aplicación del modelo heterosexual e imponer esta visión al resto de la sociedad. En primer lugar esbozaremos los argumentos médicos en el ámbito europeo por ser los referentes más recorridos por la elite médica argentina. Luego, analizaremos las relecturas y apropiaciones realizadas en el contexto argentino articulándolas con el modelo hegemónico heterosexual de feminidad.<br>This article describes and analyzes the discursive articulation on the lesbianism in the medical Argentine field between 1936 and 1955. The "truths" of the medicine possess a normative force which constitutes a suitable place to favor the heterosexual model and to impose this point of view to the rest of the society. First we will outline the medical arguments in the European area. They were the most accessed models by the medical Argentine elite. Then, we will analyze the re-readings and appropriations realized in Argentina, articulating them with the hegemonic heterosexual model of femininity

    Representação, partidos e sociedade civil na Argentina e no Brasil

    No full text
    corecore