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Degradable Polyhydroxyalkanoates as Herbicide Carriers [Text] / S. V. Prudnikova [et al.] // J. Polym. Environ. - 2013. - Vol. 21, Is. 3. - P675-682, DOI 10.1007/s10924-012-0561-z. - Cited References: 31. - We thank Dr. Christopher Brigham for critical review of the manuscript prior to submission. The study was supported by the project initiated by the Government of the Russian Federation for governmental support of scientific research conducted under the guidance of leading scientists at Russian institutions of higher learning (Agreement No. 11.G34.31.0013). . - 8. - ISSN 1566-2543

РУБ Engineering, Environmental + Polymer Science
Рубрики:
CONTROLLED-RELEASE
   SOIL
   BIODEGRADATION
   POLYESTERS
   PESTICIDE
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
   MICROSPHERES
   BACTERIA
Кл.слова (ненормированные):
Herbicide -- Haloxyfop-P-methyl -- Zellek Super -- Sustained-release formulations -- Polyhydroxyalkanoates -- Plant growth suppression
Аннотация: The biodegradable polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) has been used to design experimental sustained-release formulations of the herbicide Zellek Super in the form of films and microgranules. The kinetics of polymer degradation and the dynamics of herbicide release show that the rate and extent of herbicide release from the polymer matrix into the soil depends on the geometry of the carrier and the proportion of the pesticide loaded into it (polymer/pesticide mass ratio). Experiments with the creeping bentgrass (Agrostis stolonifera L.) show that the formulations of the herbicide Zellek Super constructed as microgranules and films can be successfully used to suppress the growth of grasses. This study is the first to demonstrate that biodegradable polyhydroxyalkanoates can be used effectively to construct environmentally friendly sustained-release PHA-herbicide systems that can be placed into the soil together with seeds.

Держатели документа:
[Prudnikova, S. V.
Sinskey, A. J.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Boyandin, A. N.
Kalacheva, G. S.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Sinskey, A. J.] MIT, Cambridge, MA 02139 USA : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Prudnikova, S.V.; Boyandin, A.N.; Kalacheva, G.S.; Sinskey, A.J.; Government of the Russian Federation [11.G34.31.0013]

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Survival and alteration of the plasmid-containing microorganism Escherichia coli Z905/pPHL7 introduced into manmade closed aquatic microcosms [Text] / A. N. Boyandin [et al.] ; ed. M Nelson [et al.] // SPACE LIFE SCIENCES: CLOSED ARTIFICIAL ECOSYSTEMS AND LIFE SUPPORT SYSTEMS. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 31: Meeting of F4 1 Session of the 34th Scientific Assembly of COSPAR (OCT, 2002, HOUSTON, TEXAS), Is. 7. - P. 1763-1768, DOI 10.1016/S0273-1177(03)00118-2. - Cited References: 9 . - ISBN 0273-1177

РУБ Engineering, Aerospace + Astronomy & Astrophysics + Ecology + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences
Рубрики:
MARKER
SOIL
Аннотация: It has been demonstrated that the transgenic microorganism Escherichia coli Z905/pPHL7 (Ap(r)Lux(+)) can exist for a long time at an elevated concentration of mineral salts. The microorganism was introduced into microcosms with sterile brackish water (salinity variable from 21 to 22 g l(-1)) taken from Lake Shira (Khakasia, Russia). The survival of the microorganism was estimated both by measuring the growth of the colonies on solid nutrient media and by the bioluminescence exhibited by the transgenic strain in samples from the microcosms and in the enrichment culture with the added selective factor - ampicillin (50 mug/ml). In the enrichment culture, the bioluminescent signal was registered through the 160-day experiment. It has been shown that in the closed microcosms with brackish water the E. coli strain becomes heterogeneous in its ampicillin resistance. The wpopulations of the transgenic strain were mainly represented by isolates able to persist in the medium containing 50 mug/ml, but there were also the cells (about 10%) with the threshold of ampicillin resistance not more than 0.05 mug/ml. Thus, it was shown that in the microcosms with brackish water and in the absence of the selective factor the transgenic strain survives and retains the recombinant plasmid. (C) 2003 COSPAR. Published by Elsevier Science Ltd. All rights reserved.

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

Доп.точки доступа:
Boyandin, A.N.; Lobova, T.I.; Popova, L.Y.; Pechurkin, PNS; Nelson, M \ed.\; Pechurkin, NS \ed.\; Dempster, WF \ed.\; Somova, LA \ed.\; Somo, , LA \ed.\

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A mathematical model of the global processes of plastic degradation in the World Ocean with account for the surface temperature distribution [Text] / S. I. Bartsev, J. I. Gitelson // Dokl. Earth Sci. - 2016. - Vol. 466, Is. 2. - P153-156, DOI 10.1134/S1028334X16020033. - Cited References:12. - This work was financially supported in part by the State Assignment for fundamental research of RAS (project no. 01201351502). . - ISSN 1028-334X. - ISSN 1531-8354

РУБ Geosciences, Multidisciplinary
Рубрики:
BIODEGRADATION
POLYMERS
SOIL
Аннотация: The suggested model of plastic garbage degradation allows us to obtain an estimate of the stationary density of their distribution over the surface of the World Ocean with account for the temperature dependence on the degradation rate. The model also allows us to estimate the characteristic time periods of degradation of plastic garbage and the dynamics of the mean density variation as the mean rate of plastic garbage entry into the ocean varies.

WOS,
Scopus
Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Bartsev, S. I.; Gitelson, J. I.; State Assignment for fundamental research of RAS [01201351502]

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Thermal, mechanical and biodegradation studies of biofiller based poly-3-hydroxybutyrate biocomposites / S. Thomas, A. A. Shumilova, E. G. Kiselev [et al.] // Int. J. Biol. Macromol. - 2020. - Vol. 155. - P1373-1384, DOI 10.1016/j.ijbiomac.2019.11.112. - Cited References:38. - This studywas financially 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".; The surface of the samples was investigated using a scanning electron microscope Hitachi TM-3000 in the Joint Instrument Use Center at the Krasnoyarsk Scientific Center of Siberian Branch of Russian Academy of Sciences. . - ISSN 0141-8130. - ISSN 1879-0003

РУБ Biochemistry & Molecular Biology + Chemistry, Applied + Polymer Science
Рубрики:
FORMULATIONS
   POLYHYDROXYALKANOATES
   POLYHYDROXYBUTYRATE
   SOIL
Кл.слова (ненормированные):
Poly-3-hydroxybutyrate -- Biocomposite -- Physical properties -- Environmental -- degradation
Аннотация: Biodegradable poly-3-hydroxybutyrate [P(3HB)] and natural fillers - clay, peat, and birch wood flour - were used to prepare powdered composites to form pellets and granules. Pellets were produced by cold pressing of polymer and filler powder whereas granules were produced from the powders wetted with ethanol. Characterization techniques like IR spectroscopy, differential scanning calorimetry, X-ray analysis, mechanical analysis and electron microscopy were employed to study the properties of the initial P(3HB) and fillers and the composites. Analysis of the IR spectra of the composites showed the absence of chemical bonds between the components, i.e. the composites were physical mixtures. Young's moduli of the pellets prepared from initial materials varied considerably, and the highest value was obtained for P(3HB) pellets (350 MPa). Studies of biodegradation of composite pellets and granules in the soil for 35 days showed that the residual mass of the pellets had decreased to 68% for P (3HB); 56.4% for P(3HB)/peat; 67% for P(3HB)/wood flour, and 64% for P(3HB)/clay; granules exhibited a similar mass loss, residual mass of the granules of P(3HB) was 68.4%, P(3HB)/peat 46.4%; P(3HB)/wood flour 77%, and P (3HB)/clay 74%. This shows the significance of the material as an eco-friendly composite without sacrificing its mechanical properties. (C) 2019 Published by Elsevier B.V.

WOS
Держатели документа:
Siberian Fed Univ, 79 Svobodnyi Av, Krasnoyarsk 660041, Russia.
Int & Interuniv Ctr Nano Sci & Nano Technol, Kottayam, Kerala, India.
Krasnoyarsk Sci Ctr SB RAS, Inst Biophys SB RAS, Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Krasnoyarsk Sci Ctr SB RAS, LV Kirensky Inst Phys SB RAS, Fed Res Ctr, 43-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Fed Res Ctr, 50 Akademgorodok, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Thomas, Sabu; Shumilova, A. A.; Kiselev, E. G.; Baranovsky, S., V; Vasiliev, A. D.; Nemtsev, I., V; Kuzmin, Andrei Petrovich; Sukovatyi, A. G.; Avinash, R. Pai; Volova, T. G.; Nemtsev, Ivan; Government of the Russian Federation [220]; Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]

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