Integración de imágenes Aster y datos geofísicos aerotransportados para el reconocimiento de zonas de alteración hidrotermal en depósitos epitermales en el sur del Perú

El presente trabajo muestra una metodología para el procesamiento de imágenes satelitales ASTER y mapas geofísicos de reducción al Polo, y mapas radiométricos principalmente %K con los cuales se determinaron zonas de anomalías hidrotermales. Para corroborar los resultados se realizó la interpretación del espectro de una muestra de mano utilizando el PIMA/SP y el estudio de secciones delgadas, pulidas. El resultado del procesamiento de imágenes ASTER y datos geofísicos sirvió para identificar 3 zonas importantes las cuales fueron corroboradas. Zona A ubicada al noreste de la imagen y muestra una alteración del tipo argílica se encuentran los depósitos de Santa Rosa, Tucari y Cacachara. Zona B. Se encuentra al sur oeste en el sector de Charaque y finalmente zona C está al sureste y noroeste de la zona de estudio donde predomina la alteración propilítica

Ecuador's experiment in living well:Sumak kawsay, Spinoza and the inadequacy of ideas

In April 2017 Ecuador halted the continental drift to the conservative right in Latin America by electing leftist Lenín Moreno to the Presidency. Attention has turned, therefore, to the legacy of outgoing President Rafael Correa’s decade in power. To that end, this paper examines one of Correa’s signature programmes, ‘Buen Vivir’ (Living Well), a strategic plan for development underscored by the indigenous Kichwa cosmology of ‘sumak kawsay’. Sumak kawsay is a notion that has been co-opted into policy mechanisms in an attempt to both challenge neoliberal modes of governance, and to disrupt the ontological bifurcation of nature and society. Given the emphasis placed on ecological sensibility in sumak kawsay and Buen Vivir, critics have been quick to highlight the contradictory relations between Ecuador’s mode of environmental governance and its extractivist agenda. Such critiques are as staid as they are well rehearsed. Acknowledging the precarious composition of sumak kawsay, the paper questions the extent to which the ethos of experimentalism in politics can be sustained, eliding stymied technocratic forms of the political. It turns, therefore, to Baruch Spinoza’s treatise on adequate and inadequate ideas. In so doing, the paper examines how one can critique an idea without perpetuating a moral economy in judgment. Consequently, the paper considers the way in which Spinoza’s thought can be charged to recuperate imperilled political ideas

The Endophytic Pseudomonas sp. S57 for Plant-Growth Promotion and the Biocontrol of Phytopathogenic Fungi and Nematodes

Oregano from Socoroma (Atacama Desert) is characterized by its unique organoleptic properties and distinctive flavor and it is produced using ancestral pesticide-free agricultural practices performed by the Aymara communities. The cultivation in this zone is carried out under extreme conditions where the standard production of different crops is limited by several environmental factors, including aridity, high concentration of salts, and boron among others. However, oregano plants are associated with microorganisms that mitigate biotic and abiotic stresses present in this site. In this work, the S57 strain (member of the Pseudomonas genus that is closely related to Pseudomonas lini) was isolated from roots of oregano plants, which are grown in soils with high content of non-sodium salts and aluminum. This bacterium stimulates the growth of Micro-Tom tomato plants irrigated with saline-boric water. Moreover, it controls the growth of phytopathogenic fungi Fusarium oxysporum and Botrytis cinerea and the nematode Meloidogyne incognita under saline-boric conditions. Together with the high levels of bacterial biomass (~47 g/L), these results allow the establishment of the bases for developing a potential new agricultural bioproduct useful for arid and semiarid environments where commercial biological products show erratic behavior

Efficiency of prefabricated biodigesters in the treatment of domestic wastewater in dispersed rural localities

In most developing nations, poor wastewater management continues to be a significant health and environmental concern. In this context, the research seeks to evaluate the efficiency of the biodigester treatment of domestic wastewater through monitoring and evaluation, based on physicochemical and bacterial parameters to reduce environmental pollution caused by excreta in the Chibaya Baja sector, Peru. Water sampling was done in the influent and effluent of the biodigester, taking samples periodically every 15 days, for 01 months, obtaining 03 samples for physicochemical and bacteriological analysis. According to the results obtained from the laboratory, the efficiency of the domestic wastewater treatment was 59.51% of the biochemical oxygen demand (BOD), 49.16% of the chemical oxygen demand (COD), in oils and fats 35.92%, in total suspended solids 52.78% and fecal coliforms (thermotolerant) 89.19%. A comparison of the parameters evaluated with the maximum permissible limits set by the Peruvian Ministry of the Environment reveals that the levels of BOD and COD exceed the limits. Therefore, this wastewater should not be discharged into water bodies