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Seasonal dynamics of amino acids in two small Siberian reservoirs dominated by prokaryotic and eukaryotic phytoplankton [Text] / G. S. Kalachova [et al.] // Aquat. Ecol. - 2004. - Vol. 38, Is. 1. - P. 3-15, DOI 10.1023/B:AECO.0000021044.55658.71. - Cited References: 37 . - ISSN 1386-2588

РУБ Ecology + Limnology + Marine & Freshwater Biology
Рубрики:
DISSOLVED ORGANIC-MATTER
   PARTICULATE FATTY-ACIDS
   FRESH-WATER ECOSYSTEMS
   BACTERIAL PRODUCTION
   CHEMICAL-COMPOSITION
   RATES
   MICROALGAE
   PROTEINS
   RELEASE
   DAPHNIA
Кл.слова (ненормированные):
amino acids -- phytoplankton -- cyanobacteria -- blooms
Аннотация: The comparison of the dynamics of phytoplankton biomass and total amino acid composition was made for two water bodies: in one the phytoplankton were dominated by prokaryotes (i.e., there was a bloom of cyanobacteria) and by eukaryotic microalgae in the other. The dynamics of phytoplankton biomass and of total amino acid composition of water were investigated during the vegetation season. It was found that the only factor that significantly changed the percentages of amino acids in water was the bloom of cyanobacteria in the "blooming" water body. During the bloom of cyanobacteria, the absolute and relative content of the Leu-Glu group increased, while the contents of other acids generally dropped. Before and after the bloom, no significant variations in the total amino acid composition were recorded. In the reservoir where eukaryotic microalgae dominated, no significant variations in amino acid composition were recorded during the season.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Krasnoyarsk State Agr Univ, Krasnoyarsk 660049, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kalachova, G.S.; Kolmakova, A.A.; Gladyshev, M.I.; Kravchuk, E.S.; Ivanova, E.A.

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Biological effects of the free and embedded metribuzin and tribenuron-methyl herbicides on various cultivated weed species / T. Volova, S. Baranovsky, O. Petrovskaya [et al.] // J. Environ. Sci. Health Part B-Pestic. Contam. Agric. Wastes. - 2020, DOI 10.1080/03601234.2020.1807835. - Cited References:42. - This work was supported by Project "Agropreparations of the new generation: a strategy of construction and realization" [Agreement No 074-02-2018-328] in accordance with Resolution No 220 of the Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning". . - ISSN 0360-1234. - ISSN 1532-4109

РУБ Environmental Sciences + Public, Environmental & Occupational Health
Рубрики:
SYNTHASE-INHIBITING HERBICIDES
CHLOROPHYLL FLUORESCENCE
RELEASE
Кл.слова (ненормированные):
Metribuzin -- tribenuron-methyl -- degradable P(3HB) -- weed growth -- inhibition -- photosynthetic activity
Аннотация: The present study addresses the herbicidal activity and biological effects of the metribuzin (MET) and tribenuron-methyl (TBM) herbicides used to control various weed species (Amaranthus retroflexus, Sinapis arvensis,andLeucanthemum maximum). The effects of the free herbicides and the herbicides embedded in granules of degradable polymer poly-3-hydroxybutyrate [P(3HB)] blended with birch wood flour were compared. Metribuzin, regardless of the form, caused 100% mortality of the three weeds by day 21. The herbicidal activity of tribenuron-methyl was lower than that of metribuzin, but the embedded TBM was superior to the free herbicide in the length and strength of its action on the weeds. Both metribuzin forms dramatically decreased the main parameters of fluorescence: maximum quantum yield of photosystem-II [Y(II)(max)], maximum quantum yield of non-photochemical quenching [Y(NPQ)(max)], and maximum rate of non-cyclic electron transport [ETRmax] and concentrations of chlorophyllaandb. The effect of the embedded TBM on the photosynthetic activity of the weeds was lower in the first two weeks of the growth of herbicide-treated plants but lasted longer than the effect of the free TBM and increased over time. Embedding of metribuzin in the matrix of degradable blend did not decrease its herbicidal activity.

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Держатели документа:
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Krasnoyarsk Sci Ctr SB RAS, Fed Res Ctr, Inst Biophys SB RAS, Krasnoyarsk, Russia.

Доп.точки доступа:
Volova, Tatiana; Baranovsky, Sergey; Petrovskaya, Olga; Shumilova, Anna; Sukovatyi, Alexey; Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]; Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning" [220]

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Development of Biodegradable Delivery Systems Containing Novel 1,2,4-Trioxolane Based on Bacterial Polyhydroxyalkanoates / S. Y. Lipaikin, I. A. Yaremenko, A. O. Terent'ev [et al.] // Adv. Polym. Technol. - 2022. - Vol. 2022. - Ст. 6353909, DOI 10.1155/2022/6353909. - Cited References:70. - \his study was financially supported by the project "Agropreparations of the new generation: a strategy of construction and realization" (Agreement No 074-02-2018-328) in accordance with Resolution No 220 of the Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning." . - ISSN 0730-6679. - ISSN 1098-2329

РУБ Engineering, Chemical + Polymer Science
Рубрики:
IN-VITRO
   BRIDGED 1,2,4,5-TETRAOXANES
   ANTIMALARIAL ACTIVITY
   RELEASE
Аннотация: In this work, delivery systems in the form of microparticles and films containing 1,2,4-trioxolane (ozonide, OZ) based on polyhydroxyalkanoates (PHAs) were developed. Main systems' characteristics were investigated: the particle yield, average diameter, zeta potential, surface morphology, loading capacity, and drug release profile of microparticles, as well as surface morphology and release profiles of OZ-containing films. PHA-based OZ-loaded microparticles have been found to have satisfactory size, zeta potential, and ozonide loading-release behavior. It was noted that OZ content influenced the surface morphology of obtained systems.

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Держатели документа:
Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia.
Russian Acad Sci, ND Zelinsky Inst Organ Chem, 47 Leninsky Prosp, Moscow 119991, Russia.
Inst Biophys SB RAS, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Lipaikin, Sergei Y.; Yaremenko, Ivan A.; Terent'ev, Alexander O.; Volova, Tatiana G.; Shishatskaya, Ekaterina, I; Lipaikin, Sergei; Government of the Russian Federation [074-02-2018-328]

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