Juan A. Castillo-Hernández

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The necessity of on-farm research to assess the relationship between shade ecological features and yields has been broadly recognised. On this basis, a more sustainable coffee system could be developed, with better conservation of natural resources. An on-farm research project was conducted in the municipality of Chilón, Chiapas, Mexico, with the objectives(More)
Two species belonging to subgenus Larroussius (P.perniciosus and P. ariasi) were collected in Aragón (Northeast of Spain). P.perniciosus was found in all places taken into account in the study, being the most abundant species in the Mediterranean-type vegetation where it is thought it is the principal vector involved in the transmission of Leishmaniasis. On(More)
This paper shows the abundance, density and phenology of Sergentomyia minuta in Aragon (Northeast of Spain). Specimens were collected using sticky traps and sampling was carried out taking vegetation as ecologycal indicator. Differences in density were found among the studied areas related to ecologycal conditions. S. minuta showed its highest density in(More)
S. In microbiology, microorganisms markers have been found to be useful in the quality control of different products such as water and food, in which the presence of coliforms, especially E. coli has been identified. Several methods for detection and quantification of enterobacteria have been developed by using chromogenic substrates. Among them, indole(More)
In this work we show the results obtained from several measurements, on hearing aid (HA) prototype carried out at the Acoustic Laboratory of the Centro de Ciencias Aplicadas y Desarrollo Tecnológico (CCADET) at the Universidad Nacional Autónoma de México (UNAM). The hearing aid has been developed at the Electronics Laboratory of the same Center. All the(More)
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