Cambios estacionales en la concentración de azúcares solubles en órganos perennes de nogal [(Carya illinoiensis (Wangenh.) Koch)]

Mejora de Contraste y Compensación en Cambios de la Iluminación

In this paper a contrast operator built by means of two primitives involving Weber’s Law is presented. The proposed contrast mapping has two objectives, in the first place the contrast enhancement and in the second, the normalization of the processed image. The contrast enhancement is based on the image background detection; this parameter is computed through the analysis of the regional minimu...

Sur la frequence de leptospirose en Iran

Sur la fréquence de leptospirose en Iran

Cambios Rpidos en las Directrices en Comunidades de Pescadores de Yangtze y en la Memoria Local de Especies Extintas

Local ecological knowledge can provide a unique source of data for conservation, especially in efforts to investigate the status of rare or possibly extinct species, but it is unlikely to remain constant over time. Loss of perspective about past ecological conditions caused by lack of communication between generations may create “shifting baseline syndrome,” in which younger generations are les...

Existence de la brucellose en Iran. Isolement de Brucella abortus