108 research outputs found
Stridulatory file and calling song of two populations of the tropical bush cricket Eneoptera surinamensis (Orthoptera, Gryllidae, Eneopterinae)
Income evaluation of small - scale fishers in two brazilian urban reservoirs: Represa Billings (SP) and Lago Paranoá (DF)
Being Objective With a Personal Perspective
This article examines what objectivity means to 15 environmental journalists at two Chinese newspapers and how this value guides their practices. It reveals that although objectivity is central to their journalistic ethos, the participants see it as ethical to organise reports within a framework arising from their personal judgments of news events. The appropriation and particular definition of the American journalistic norm of objectivity increases the participants' political safety and justifies them in playing their perceived role as guardians of society and educators. In so doing, they negotiate with other social actors and consolidate their cultural authority over defining reality
Physicochemical and sensory changes in aged sugarcane spirit submitted to filtering with activated carbon filter
Physiological electrocardiographic findings in a Brazilian cohort of young football players : b-pro foot ecg pilot study
O modelo dos múltiplos fluxos de Kingdon na análise de políticas de saúde: aplicabilidades, contribuições e limites
Subtle effects of environmental stress observed in the early life stages of the Common frog, Rana temporaria
Worldwide amphibian populations are declining due to habitat loss, disease and pollution. Vulnerability to environmental contaminants such as pesticides will be dependent on the species, the sensitivity of the ontogenic life stage and hence the timing of exposure and the exposure pathway. Herein we investigated the biochemical tissue ‘fingerprint’ in spawn and early-stage tadpoles of the Common frog, Rana temporaria, using attenuated total reflection- Fourier-transform infrared (ATR-FTIR) spectroscopy with the objective of observing differences in the biochemical constituents of the respective amphibian tissues due to varying water quality in urban and agricultural ponds. Our results demonstrate that levels of stress (marked by biochemical constituents such as glycogen that are involved in compensatory metabolic mechanisms) can be observed in tadpoles present in the pond most impacted by pollution (nutrients and pesticides), but large annual variability masked any inter-site differences in the frog spawn. ATR-FTIR spectroscopy is capable of detecting differences in tadpoles that are present in selected ponds with different levels of environmental perturbation and thus serves as a rapid and cost effective tool in assessing stress-related effects of pollution in a vulnerable class of organism
A procedure to analyze the viability of rainwater harvesting systems in urban areas based on pre-defined diagrams
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