Abstract. This paper presents a method to measure the lesions originated by the Cercospora arachidicola and Cercosporidium personatum fungi, which cause, respectively, the early and late leaf spots in peanut plants. The proposed method is based on a modified version…

Abstract. This paper presents a new method based on digital image processing techniques such as color transformations and mathematical morphology, as well as on some specialist knowledge, to provide estimates for the lengths of rice panicles that have been removed…

The process of water erosion occurs in watersheds throughout the world and it is strongly affected by anthropogenic influences. Thus, the knowledge of these processes is extremely necessary for planning of conservation efforts. This study was performed in an experimental…

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El trabajo discute el papel del lenguaje en la tradición de la filosofía trascendental.
En la primera parte, se muestra ante todo el carácter a-lingüístico de las categorías del pensamiento en la filosofía kantiana; se señalan luego las dificultades teóricas…

Descripción completa.

Descripción completa.

Descripción completa.

14 species were determined. The knowledge of this genus in the states of Chihuahua, Distrito Federal, Estado de Mexico, Guanajuato, Guerrero, Michoacán, Nayarit, Oaxaca, Querétaro and Tlaxcala is widened. A sinoptical key is provided for the species cited from Mexico,…

The ecological camp as a university extension project emerged in 2001 from the subject Sociology and Environmental Education in the course Environmental Engineering in the Agronomic Engineering School at National University of the East. It was designed as an environmental…