منابع مشابه
Bacterial Filters
We have come to divide bacteria and viruses into filterable and nonfilterable, and we have come to think that those organisms, visible or invisible, which are smaller than the pores of our filter are filterable. That size, however, cannot be the sole criterion we have known from the behavior of certain aniline dyes.* Thus Victoria blue, a basic dye, will not pass a Berkefeld filter while Congo ...
متن کاملSemi-G-filters, Stonean filters, MTL-filters, divisible filters, BL-filters and regular filters in residuated lattices
At present, the filter theory of $BL$textit{-}algebras has been widelystudied, and some important results have been published (see for examplecite{4}, cite{5}, cite{xi}, cite{6}, cite{7}). In other works such ascite{BP}, cite{vii}, cite{xiii}, cite{xvi} a study of a filter theory inthe more general setting of residuated lattices is done, generalizing thatfor $BL$textit{-}algebras. Note that fil...
متن کاملSurvival of selected bacterial species in sterilized activated carbon filters and biological activated carbon filters.
The survival of selected hygienically relevant bacterial species in activated carbon (AC) filters on a bench scale was investigated. The results revealed that after inoculation of the test strains the previously sterilized AC absorbed all bacteria (10(6) to 10(7)). After a period of 6 to 13 days without countable bacteria in the effluent, the numbers of Escherichia coli, Pseudomonas aeruginosa,...
متن کاملNew uses for membrane filters III. Bacterial mating procedure.
The advantages of using solid media throughout the penicillin procedure for the selection of many auxotrophic (i.e., nutritionally deficient) bacterial mutants of discrete mutational origin were pointed out by Adelberg and Myers (J. Bacteriol. 65:348, 1953). Their procedure requires six layers of agar, the isolation of colonies inbedded under four layers of agar, and several extensive periods o...
متن کاملBacterial interference with coliform colony sheen production on membrane filters.
The membrane filter (MF) method for detection and enumeration of coliform bacteria in drinking water requires that the coliforms both grow and produce a green metallic sheen when the filter is incubated on modified Endo medium at 35 degrees C for 22 h. Large numbers of noncoliform bacteria, which are enumerated by the standard plate count (SPC) technique, can interfere with the detection of col...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1926
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.9.6.811