Results 121 to 130 of about 913 (156)
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Bioavailability of wastewater-derived organic nitrogen to the alga Selenastrum Capricornutum
Water Research, 2004Recent attempts to control cultural eutrophication in nitrogen-limited systems have focused on the simultaneous control of all forms of nitrogen with the underlying assumption that inorganic and organic nitrogen are equally bioavailable. To assess the validity of this assumption, algal growth bioassays were conducted on denitrified wastewater effluent ...
Elif, Pehlivanoglu, David L, Sedlak
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Removal and biodegradation of polycyclic aromatic hydrocarbons by Selenastrum capricornutum
Environmental Toxicology and Chemistry, 2006Abstract The removal and degradation of a mixture of polycyclic aromatic hydrocarbons (PAH), namely phenanthrene (PHE), fluoranthene (FLA), and pyrene (PYR), by a green microalgal species, Selenastrum capricornutum, at different initial cell densities were studied.
Sidney Man Ngai, Chan +3 more
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Growth of selenastrum capricornutum in the presence of synthetic surfactants
Water Research, 1988Abstract The green alga Selenastrum capricornutum Printz was cultured in a synthetic liquid medium and its yield was studied in the presence of 28 different synthetic surfactants. The surfactants were used in different concentrations depending on their inhibitory effects. It seemed that the tested compounds could be grouped into three types according
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Uptake of lead and its influence in the alga Selenastrum capricornutum printz
Talanta, 1991The influence of nutrient level, hours of fight and the flux of air by volume of solution on uptake of lead has been examined from batch growth experiments carried out with the alga Selenastrum capricornutum Printz. The organic matter released by the alga has been characterized in terms of absorbance at 285 nm, dissolved organic carbon and maximum ...
M L, Gonçalves +4 more
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Effect of aluminum and zinc on enzyme activities in the green alga Selenastrum capricornutum
Bulletin of Environmental Contamination and Toxicology, 1995Acid rain produced by atmospheric pollution may decrease the pH value of water and increase the availability and potential toxicity of metals in water which have detrimental effects on aquatic organism, including algae, the important component of the primary production, and, thus, the entire aquatic food chain.
F X, Kong, Y, Chen
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Sensitivity ofselenastrum capricornutum, Daphnia magnaand submttochondrial particles to tributyltin
Environmental Technology, 1993Abstract The purpose of this study was to evaluate the sensitivity to tributyltin (TBT) of two aquatic organisms belonging to two different levels of the feeding chain: Selenastrum capricornutum alga and Daphnia magna crustacean. The EC50 value at 96 h for Selenastrum capricornutum and the ones at 24 h and 45 h for Daphnia magna with relative ...
MIANA P. +3 more
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Environmental Pollution, 1996
The herbicides MCPA, butylate, atrazine and cyanazine are extensively used in Canadian agriculture and information regarding their effects on indigenous biota is scarce. Phytotoxicity assessments were conducted in the laboratory on the common green alga Selenastrum capricornutum using both the active ingredient of the herbicides and their formulated ...
P Y, Caux, L, Ménard, R A, Kent
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The herbicides MCPA, butylate, atrazine and cyanazine are extensively used in Canadian agriculture and information regarding their effects on indigenous biota is scarce. Phytotoxicity assessments were conducted in the laboratory on the common green alga Selenastrum capricornutum using both the active ingredient of the herbicides and their formulated ...
P Y, Caux, L, Ménard, R A, Kent
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Biotransformation of Finasteride (MK‐0906) bySelenastrum capricornutum(Green Algae)
Annals of the New York Academy of Sciences, 1994Finasteride (MK-0906), a drug used for the treatment of benign prostatic hyperplasia, is a highly specific inhibitor of steroid 5 alpha-reductase, an enzyme that converts testosterone (T) to dihydrotestosterone (DHT) in animals and humans. In a study to evaluate the effect of finasteride on the growth of green alga, Selenastrum capricornutum, the ...
E S, Venkataramani +6 more
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Phosphorus-zinc interactive effects on growth by Selenastrum capricornutum (Chlorophyta)
Environmental Science & Technology, 1985Culturing experiments in chemically defined growth media were conducted to observe possible Zn and P interactions on Selenastrum capricornutum Printz growth indexes. Elevated Zn concentrations (7.5 x 10/sup -8/ and 1.5 x 10/sup -7/ M (Zn/sup 2 +/)) were highly detrimental to algal growth, affecting lag, exponential, and stationary growth phases.
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Effects of manganese, copper and lead on Selenastrum capricornutum and Chlorella stigmatophora
Water Research, 1979Algal assays were conducted to observe the responses of Selenastrum capricornutum and Chlorella stigmatophora to the metals manganese, copper and lead, added singly or in combination to both artificial media and natural waters. A 50% reduction in the total algal cell volume of Selenastrum in standard algal assay medium (SAAM) occurred by the addition ...
E.R. Christensen +2 more
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