Utilization of Spirillum volutans for monitoring the toxicity of effluents of a cellulose and paper industry

The motility of Spirillum volutans was used for monitoring the toxicity of effluents of a cellulose and paper industry. Results indicated that there was no correlation between organic content and the toxic effects of the residues in the effluents. The effluents from the chlorination step and from the sludge ponds presented the highest toxicity. on the other hand, the final effluent from the biological treatment basin had no toxic agent. This bioassay showed to be a simple and reliable technique that can be used for adequately monitoring the toxicity of effluents.

Ueber das Spirillum des Säugetiermagens und sein Verhalten zu den Belegzellen.

Inaug.-diss. (M.D.)--Kiel, 1896.

Sodoku: descrição de um caso

A febre por mordida de rato resulta de uma infecção causada pelo Spirillum minus. Os autores descrevem um caso de paciente com febre, astenia e úlcera na região frontal esquerda, após exposição a um roedor. O microorganismo foi identificado através de exame em campo escuro de material obtido do exsudado da úlcera. A penicilinafoi utilizada, com total regressão dos sintomas.

Biological Atlas of the Arctic Seas 2000: Physical oceanography, hydrochemistry, meteorology, and plankton of the Barents and Kara Seas

Presented are physical and biological data for the region extending from the Barents Sea to the Kara Sea during 158 scientific cruises for the period 1913-1999. Maps with the temporal distribution of physical and biological variables of the Barents and Kara Seas are presented, with proposed quality control criteria for phytoplankton and zooplankton data. Changes in the plankton community structure between the 1930s, 1950s, and 1990s are discussed. Multiple tables of Arctic Seas phytoplankton and zooplankton species are presented, containing ecological and geographic characteristics for each species, and images of live cells for the dominant phytoplankton species.