to assess the microbiological status of a biofiltration system used to treat borehole water, filtermatrix samples were analyzed after staining for the presence of active biofilms using confocal laser scanningmicroscopy (clsm). clsm revealed the presence of biofilms on the filter matrix with actively metabolizingmicrobial cells present. thereafter, heterotrophs,manganese oxidizing bacteria (mob)...

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We present a set of library routines that allow easily parallelized graphics rendering routines that require no communication between each parallel task, such as ray-tracing, to be run efficiently in an environment of distributed workstations. The presentation of the paper focuses on the problems encountered in implementing a distributed system under Unix and proposes solutions to each problem....