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Evaluación ambiental de ecosistemas altamente sensibles: Uso de líquenes como biomonitores
(Lima, 2002-06)
Se presentan los resultados preliminares de los estudios poblacionales de líquenes de tres ecosistemas diferentes; así como, los contenidos de elementos trazas ensayadas por activación neutrónica en las muestras de líquenes ...
Berilio-7 en Usnea antarctica Du Rietz de la Estación Científica Antártica Machu Picchu
(Lima, 2014-11)
Concentraciones de Be-7 en Usnea antarctica (liquen) colectada durante el verano austral del año 2013, en la Estación Científica Antártica Peruana “Machu Picchu”, fueron determinadas por espectrometría gamma de alta ...
Study of antarctic lichens as environmental biomonitors in the Admiralty Bay: Preliminary study of trace elements contents by neutron activation analysis
(Lima, 2002-06)
Al, As, Cu, Fe, Mn and Ti contents were analyzed for the epilithic antarctic lichen Usnea antarctica, used as a biomonitor for air quality. The samples were taken in the surrounding area of the Peruvian scientific station ...
Beryllium-7 in lichens (Usnea antarctica Du Rietz) colllected in the Machu Picchu Antarctic Scientific Station during the austral summer 2012-2013
(Lima, 2013-11-12)
The presence of Be-7 in Antarctic lichens is verified with an increase in their levels of
concentration, showing an average derived activity 423,13 ± 80,39 Bq/kg for 2013.
Because of the good capability of incorporation ...
Enrichment factors of elements in lichens from the Machu Picchu Antarctic Scientific Station (2013)
(Instituto Peruano de Energía Nuclear, 2013-11-20)
To evaluate properly the extent of accumulation and movement of toxic substances in the environment there must be reliable of their present and past concentrations. The purpose of one project at the IPEN Antarctic Program ...