Results 11 to 20 of about 82,416 (267)
Analyzing the trophic link between the mesopelagic microbial loop and zooplankton from observed depth profiles of bacteria and protozoa [PDF]
Biogeosciences, 2005 It is widely recognized that organic carbon exported to the ocean aphotic layer is significantly consumed by heterotrophic organisms such as bacteria and zooplankton in the mesopelagic layer.
T. Tanaka +2 more
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Nitrite Production by Heterotrophic Bacteria [PDF]
Journal of General Microbiology, 1956 SUMMARY : Heterotrophic bacteria were studied which produced nitrite in the presence of ammonia and in the absence of nitrate. A soil extract medium was prepared which allowed good growth as well as nitrite production in the absence of nitrate. Quantitative data are recorded showing that ammonia decreases as nitrite accumulates when four different ...
T, FISHER, E, FISHER, M D, APPLEMAN
openaire +2 more sources
Assessment of landfill leachate biodegradability and treatability by means of allochthonous and autochthonous biomasses [PDF]
, 2020 The biodegradability and treatability of a young (3 years old) municipal landfill leachate was evaluated by means of chemical oxygen demand (COD) fractionation tests, based on respirometric techniques.
Corsino, S.F., Capodici, M., Di Trapani, D., Torregrossa Michele, Viviani Gaspare
core +1 more source
Metabolic network analysis reveals microbial community interactions in anammox granules. [PDF]
, 2017 Microbial communities mediating anaerobic ammonium oxidation (anammox) represent one of the most energy-efficient environmental biotechnologies for nitrogen removal from wastewater.
Bhattacharjee, Ananda S +6 more
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Bacterial analysis in the water samples from the seacoast of Zhejiang Province
浙江大学学报. 农业与生命科学版, 2003 Both surface and lower layer water samples were collected from 30 coastal areas of Zhejiang province for bacteriological analysis during the periods of May to June and September to October 1998.
DU Ai-fang
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Heterotrophic Activity of Deep-Sea Sediment Bacteria [PDF]
Applied Microbiology, 1975 Sediment samples, containing mixed microbial populations that were decompressed during retrieval from 7,750 and 8,130 m in the Puerto Rican Trench, were recompressed and incubated at the approximate in situ temperature (3 C) and pressure (775 or 815 atm) in the presence of 14 C-labeled amino acids.
J R, Schwarz, R R, Colwell
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Bacterial nitrate assimilation: gene distribution and regulation [PDF]
, 2011 In the context of the global nitrogen cycle, the importance of inorganic nitrate for the nutrition and growth of marine and freshwater autotrophic phytoplankton has long been recognized.
Andrew J. Gates +44 more
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H2S biotreatment with sulfide-oxidizing heterotrophic bacteria. [PDF]
Biodegradation, 2018 Many industrial activities produce H2S, which is toxic at high levels and odorous at even very low levels. Chemolithotrophic sulfur-oxidizing bacteria are often used in its remediation. Recently, we have reported that many heterotrophic bacteria can use sulfide:quinone oxidoreductase and persulfide dioxygenase to oxidize H2S to thiosulfate and sulfite.
Hou N +5 more
europepmc +4 more sources
A survey of heterotrophic bacteria and coliforms in the water of old and new distribution networks [PDF]
Journal of Advances in Environmental Health Research, 2016 Controlling the microbiological quality of water is important for its uses. Microbiological requirements of drinking water ensure the absence of coliforms, but may indicate the potential presence of other potentially pathogenic microorganisms and viruses
Atefeh Jaleilzadeh +4 more
doaj +1 more source
Ecotoxicology and Environmental Safety, 2023 High concentration of ammonia poses a common threat to the healthy breeding of marine aquaculture organisms. Since aquaculture water is rich in organic matter, heterotrophic nitrifying bacteria might play a crucial role in ammonia removal. However, their
Guizhen Li +4 more
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