Библиотека института биофизики СО РАН

Главная

Базы данных

Труды сотрудников ИБФ СО РАН - результаты поиска

Вид поиска

Каталог книг и продолжающихся изданий библиотеки Института биофизики СО РАН

Иностранные журналы библиотеки Института биофизики СО РАН

Отечественные журналы библиотеки Института биофизики СО РАН

Каталог диссертаций ИБФ СО РАН

Труды сотрудников ИБФ СО РАН

Область поиска

в найденном

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Temperature<.>)

Общее количество найденных документов : 225
Показаны документы с 1 по 20

1-20 21-40 41-60 61-80 81-100 101-120

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova, Tatiana G., Kiselev, Evgeniy G., Demidenko, Alexey V., Zhila, Natalia O., Nemtsev, Ivan V., Lukyanenko, Anna V.
Заглавие : Production and Properties of Microbial Polyhydroxyalkanoates Synthesized from Hydrolysates of Jerusalem Artichoke Tubers and Vegetative Biomass
Колич.характеристики :25 с
Коллективы : Project "Agropreparations of the new generation: a strategy of construction and realization" [075-15-2021-626]; State Assignment of the Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0006]
Место публикации : Polymers: MDPI, 2022. - Vol. 14, Is. 1. - Ст.132. - ISSN 2073-4360(eISSN), DOI 10.3390/polym14010132
Примечания : Cited References:93. - This study was financially supported by Project "Agropreparations of the new generation: a strategy of construction and realization" (Agreement No. 075-15-2021-626) in accordance with Resolution No. 220 of the Government of the Russian Federation of 9 April 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning" (polymer synthesis, properties), and by the State Assignment of the Ministry of Science and Higher Education of the Russian Federation No. FSRZ-2020-0006 (films production, surface properties).
Предметные рубрики: GLUCOSE-UTILIZING STRAIN
RALSTONIA-EUTROPHA
ASPERGILLUS-NIGER
ACID
Аннотация: One of the major challenges in PHA biotechnology is optimization of biotechnological processes of the entire synthesis, mainly by using new inexpensive carbon substrates. A promising substrate for PHA synthesis may be the sugars extracted from the Jerusalem artichoke. In the present study, hydrolysates of Jerusalem artichoke (JA) tubers and vegetative biomass were produced and used as carbon substrate for PHA synthesis. The hydrolysis procedure (the combination of aqueous extraction and acid hydrolysis, process temperature and duration) influenced the content of reducing substances (RS), monosaccharide contents, and the fructose/glucose ratio. All types of hydrolysates tested as substrates for cultivation of three strains-C. necator B-10646 and R. eutropha B 5786 and B 8562-were suitable for PHA synthesis, producing different biomass concentrations and polymer contents. The most productive process, conducted in 12-L fermenters, was achieved on hydrolysates of JA tubers (X = 66.9 g/L, 82% PHA) and vegetative biomass (55.1 g/L and 62% PHA) produced by aqueous extraction of sugars at 80 degrees C followed by acid hydrolysis at 60 degrees C, using the most productive strain, C. necator B-10646. The effects of JA hydrolysates on physicochemical properties of PHAs were studied for the first time. P(3HB) specimens synthesized from the JA hydrolysates, regardless of the source (tubers or vegetative biomass), hydrolysis conditions, and PHA producing strain employed, exhibited the 100-120 degrees C difference between the T-melt and T-degr, prevailing of the crystalline phase over the amorphous one (C-x between 69 and 75%), and variations in weight average molecular weight (409-480) kDa. Supplementation of the culture medium of C. necator B-10646 grown on JA hydrolysates with potassium valerate and epsilon-caprolactone resulted in the synthesis of P(3HB-co-3HV) and P(3HB-co-4HB) copolymers that had decreased degrees of crystallinity and molecular weights, which influenced the porosity and surface roughness of polymer films prepared from them. The study shows that JA hydrolysates used as carbon source enabled productive synthesis of PHAs, comparable to synthesis from pure sugars. The next step is to scale up PHA synthesis from JA hydrolysates and conduct the feasibility study. The present study contributes to the solution of the critical problem of PHA biotechnology-finding widely available and inexpensive substrates.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev I. V., Andrushchenko P. Y., Zotina T. A.
Заглавие : Seasonal formation of annual rings on the scales of Baikal grayling inhabiting the middle reaches of the Yenisei River under altered temperature regime
Место публикации : Environ. Biol. Fishes: Springer Science and Business Media B.V., 2021. - Article in press. - ISSN 03781909 (ISSN), DOI 10.1007/s10641-021-01155-y
Аннотация: The seasonal formation of annual rings on the scales of Baikal grayling from the middle reaches of the Yenisei River has been studied to find out the reasons for the high growth rate of the grayling under altered temperature regime downstream of the dam of the Krasnoyarsk Hydroelectric Plant. The number of circuli outside the last identified annuli and in the second, third, and fourth completed annuli was estimated on 569 fish caught during the annual cycle. The von Bertalanffy growth function was used to describe the increment in the number of circuli over a year. The calculation showed that a new annual ring was produced in July. In November, there was no statistically significant difference between the circulus number in scale increment and the circulus number in the corresponding completed annuli of older fish. Thus, despite the increased duration of the period with optimal water temperatures downstream of the dam of the Krasnoyarsk Hydroelectric Plant, fish growth was observed in a limited period of the year, from July to November. The probable reason for the high growth rate of grayling in the study area is that the fish do not have to waste energy on seasonal migration to the tributaries. Taking into account that grayling biomass production in the middle Yenisei occurs from July to November, we can recommend shifting the dates of commercial fishing for grayling to the end of this period—November–December. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev, Ivan V., Andrushchenko, Pavel Yu., Zotina, Tatiana A.
Заглавие : Seasonal formation of annual rings on the scales of Baikal grayling inhabiting the middle reaches of the Yenisei River under altered temperature regime
Колич.характеристики :10 с
Коллективы : Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory; Krasnoyarsk Regional Scientific Foundation [20-44-240009]
Место публикации : Environ. Biol. Fishes: SPRINGER, 2021. - Article in press. - ISSN 0378-1909, DOI 10.1007/s10641-021-01155-y. - ISSN 1573-5133(eISSN)
Примечания : Cited References:40. - The research was supported by the grant of Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, and Krasnoyarsk Regional Scientific Foundation No. 20-44-240009.
Предметные рубрики: THYMALLUS-ARCTICUS
FLOW REGULATION
SOCKEYE-SALMON
SOMATIC GROWTH
Аннотация: The seasonal formation of annual rings on the scales of Baikal grayling from the middle reaches of the Yenisei River has been studied to find out the reasons for the high growth rate of the grayling under altered temperature regime downstream of the dam of the Krasnoyarsk Hydroelectric Plant. The number of circuli outside the last identified annuli and in the second, third, and fourth completed annuli was estimated on 569 fish caught during the annual cycle. The von Bertalanffy growth function was used to describe the increment in the number of circuli over a year. The calculation showed that a new annual ring was produced in July. In November, there was no statistically significant difference between the circulus number in scale increment and the circulus number in the corresponding completed annuli of older fish. Thus, despite the increased duration of the period with optimal water temperatures downstream of the dam of the Krasnoyarsk Hydroelectric Plant, fish growth was observed in a limited period of the year, from July to November. The probable reason for the high growth rate of grayling in the study area is that the fish do not have to waste energy on seasonal migration to the tributaries. Taking into account that grayling biomass production in the middle Yenisei occurs from July to November, we can recommend shifting the dates of commercial fishing for grayling to the end of this period-November-December.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar, Sergey V., Kolenchukova, Oksana A., Boldyreva, Anna V., Kudryasheva, Nadezda S., Gerasimova, Yulia V., Krasikov, Alexandr A., Yaroslavtsev, Roman N., Bayukov, Oleg A., Ladygina, Valentina P., Birukova, Elena A.
Заглавие : Biogenic Ferrihydrite Nanoparticles: Synthesis, Properties In Vitro and In Vivo Testing and the Concentration Effect
Колич.характеристики :18 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk Territory; Regional Science Foundation [20-416-242907]
Место публикации : Biomedicines: MDPI, 2021. - Vol. 9, Is. 3. - Ст.323. - ISSN 2227-9059(eISSN), DOI 10.3390/biomedicines9030323
Примечания : Cited References:52. - This research was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory and the Regional Science Foundation, grant number 20-416-242907.
Аннотация: Biogenic ferrihydrite nanoparticles were synthesized as a result of the cultivation of Klebsiella oxytoca microorganisms. The distribution of nanoparticles in the body of laboratory animals and the physical properties of the nanoparticles were studied. The synthesized ferrihydrite nanoparticles are superparamagnetic at room temperature, and the characteristic blocking temperature is 23-25 K. The uncompensated moment of ferrihydrite particles was determined to be approximately 200 Bohr magnetons. In vitro testing of different concentrations of ferrihydrite nanoparticles for the functional activity of neutrophilic granulocytes by the chemiluminescence method showed an increase in the release of primary oxygen radicals by blood phagocytes when exposed to a minimum concentration and a decrease in secondary radicals when exposed to a maximum concentration. In vivo testing of ferrihydrite nanoparticles on Wister rats showed that a suspension of ferrihydrite nanoparticles has chronic toxicity, since it causes morphological changes in organs, mainly in the spleen, which are characterized by the accumulation of hemosiderin nanoparticles (stained blue according to Perls). Ferrihydrite can also directly or indirectly stimulate the proliferation and intracellular regeneration of hepatocytes. The partial detection of Perls-positive cells in the liver and kidneys can be explained by the rapid elimination from organs and the high dispersion of the nanomaterial. Thus, it is necessary to carry out studies of these processes at the systemic level, since the introduction of nanoparticles into the body is characterized by adaptive-proliferative processes, accompanied by the development of cell dystrophy and tension of the phagocytic system.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Diaz A. V., Ageev, Aleksander Vladimirovich, Ivanova, Elena Anatolevna, Anishchenko, Olesia Valerevna
Заглавие : Winter atmospheric nutrient and pollutant deposition on Western Sayan Mountain lakes (Siberia)
Колич.характеристики :18 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-04-00960]; Ministry of Science and Higher Education of the Russian Federation [5-100, FSRZ-2020-0014]
Место публикации : Biogeosciences: COPERNICUS GESELLSCHAFT MBH, 2021. - Vol. 18, Is. 5. - С. 1601-1618. - ISSN 1726-4170, DOI 10.5194/bg-18-1601-2021. - ISSN 1726-4189(eISSN)
Примечания : Cited References:86. - This research has been supported by the Russian Foundation for Basic Research (grant no. 20-04-00960) and the Ministry of Science and Higher Education of the Russian Federation (postdoctoral program project no. 5-100, grant no. FSRZ-2020-0014).
Предметные рубрики: FLY-ASH PARTICLES
NITROGEN DEPOSITION
PHOSPHORUS DEPOSITION
Аннотация: The world map of anthropogenic atmospheric nitrogen deposition and its effects on natural ecosystems is not described with equal precision everywhere. In this paper, we report atmospheric nutrient, sulfate and spheroidal carbonaceous particle (SCP) deposition rates, based on snowpack analyses of a formerly unexplored Siberian mountain region. Then, we discuss their potential effects on lake phytoplankton biomass limitation. We estimate that the nutrient depositions observed in the late-season snowpack (40 +/- 16 mgNO(3)-Nm(-2) and 0.58 +/- 0.13 mg TP-Pm-2; TP for total phosphorous) would correspond to yearly depositions lower than 119 +/- 71 mgNO(3)-Nm(-2) yr(-1) and higher than 1.71 +/- 0.91 mg TP-Pm-2 yr(-1). These yearly deposition estimates would approximately fit the predictions of global deposition models and correspond to the very low nutrient deposition range, although they are still higher than world background values. In spite of the fact that such a low atmospheric nitrogen deposition rate would be enough to induce nitrogen limitation in unproductive mountain lakes, phosphorus deposition was also extremely low, and the resulting lake water N: P ratio was unaffected by atmospheric nutrient deposition. In the end, the studied lakes' phytoplankton appeared to be split between phosphorus and nitrogen limitation. We conclude that these pristine lakes are fragile sensitive systems exposed to the predicted climate warming, increased winter precipitation, enhanced forest fires and shifts in anthropogenic nitrogen emissions that could finally couple their water chemistry to that of atmospheric nutrient deposition and unlock temperature-inhibited responses of phytoplankton to nutrient shifts.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev I. V., Andrushchenko P. Y., Chuprov S. M., Zotina T. A.
Заглавие : Structural Features of Scales of Baikal Grayling Thymallus baicalensis under Conditions of an Altered Hydrological Regime
Место публикации : Inland Water Biol.: Pleiades journals, 2021. - Vol. 14, Is. 1. - С. 60-66. - ISSN 19950829 (ISSN), DOI 10.1134/S1995082920060176
Аннотация: Abstract: The number of circuli between annual scale rings of grayling Thymallus baicalensis Dybowski, 1874 sampled in the Yenisei River in the downstream section of the Krasnoyarsk Hydroelectric Power Station, which does not freeze in winter, have been investigated and compared with populations of grayling from large tributaries of the Yenisei River (Amyl, Kan, Nizhnyaya Tunguska, and Bolshaya Kheta). It has been shown that graylings inhabiting the Yenisei River have a significantly higher (1.5–2.0 times, p 0.01) number of circuli in the second, third, and fourth annual rings of the scales than in the populations from the tributaries, which corresponds to a higher growth rate of the grayling population in the Yenisei River. An assumption is made about the transition of graylings inhabiting the Yenisei River channel in the lower reaches of the hydroelectric station to a sedentary lifestyle. © 2021, Pleiades Publishing, Ltd.
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Diaz-De-Quijano D., Vladimirovich Ageev A., Anatolevna Ivanova E., Valerevna Anishchenko O.
Заглавие : Winter atmospheric nutrient and pollutant deposition on Western Sayan Mountain lakes (Siberia)
Место публикации : Biogeosciences: Copernicus GmbH, 2021. - Vol. 18, Is. 5. - С. 1601-1618. - ISSN 17264170 (ISSN), DOI 10.5194/bg-18-1601-2021
Аннотация: The world map of anthropogenic atmospheric nitrogen deposition and its effects on natural ecosystems is not described with equal precision everywhere. In this paper, we report atmospheric nutrient, sulfate and spheroidal carbonaceous particle (SCP) deposition rates, based on snowpack analyses of a formerly unexplored Siberian mountain region. Then, we discuss their potential effects on lake phytoplankton biomass limitation. We estimate that the nutrient depositions observed in the late-season snowpack (4016 mgNO3-Nm2 and 0.580.13 mg TP-Pm2; TP for total phosphorous) would correspond to yearly depositions lower than 11971 mgNO3-Nm2 yr1 and higher than 1.710.91 mg TP-Pm2 yr1. These yearly deposition estimates would approximately fit the predictions of global deposition models and correspond to the very low nutrient deposition range, although they are still higher than world background values. In spite of the fact that such a low atmospheric nitrogen deposition rate would be enough to induce nitrogen limitation in unproductive mountain lakes, phosphorus deposition was also extremely low, and the resulting lake water N: P ratio was unaffected by atmospheric nutrient deposition. In the end, the studied lakes' phytoplankton appeared to be split between phosphorus and nitrogen limitation. We conclude that these pristine lakes are fragile sensitive systems exposed to the predicted climate warming, increased winter precipitation, enhanced forest fires and shifts in anthropogenic nitrogen emissions that could finally couple their water chemistry to that of atmospheric nutrient deposition and unlock temperature-inhibited responses of phytoplankton to nutrient shifts. © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License.
Scopus
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zuev, I., V, Andrushchenko, P. Yu, Chuprov S. M., Zotina T. A.
Заглавие : Structural Features of Scales of Baikal Grayling Thymallus baicalensis under Conditions of an Altered Hydrological Regime
Колич.характеристики :7 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-44-240003]; Krasnoyarsk Regional Foundation [18-44-240003]; Siberian Federal University; Institute of Biophysics, Siberian Branch, Russian Academy of SciencesRussian Academy of Sciences
Место публикации : Inland Water Biol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 1. - С. 60-66. - ISSN 1995-0829, DOI 10.1134/S1995082920060176. - ISSN 1995-0837(eISSN)
Примечания : Cited References:39. - This study was partly supported by the Russian Foundation for Basic Research and Krasnoyarsk Regional Foundation for the Support of Scientific and Scientific-Technical Activity (2018-2020), project no. 18-44-240003, and budget themes of the Siberian Federal University and the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences
Аннотация: The number of circuli between annual scale rings of grayling Thymallus baicalensis Dybowski, 1874 sampled in the Yenisei River in the downstream section of the Krasnoyarsk Hydroelectric Power Station, which does not freeze in winter, have been investigated and compared with populations of grayling from large tributaries of the Yenisei River (Amyl, Kan, Nizhnyaya Tunguska, and Bolshaya Kheta). It has been shown that graylings inhabiting the Yenisei River have a significantly higher (1.5-2.0 times, p 0.01) number of circuli in the second, third, and fourth annual rings of the scales than in the populations from the tributaries, which corresponds to a higher growth rate of the grayling population in the Yenisei River. An assumption is made about the transition of graylings inhabiting the Yenisei River channel in the lower reaches of the hydroelectric station to a sedentary lifestyle.
WOS
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin, Anatoly Nikolayevich, Kazantseva, Eugenia Andreevna
Заглавие : Constructing Slow-Release Metribuzin Formulations by Co-extrusion of the Pesticide with Poly-epsilon-Caprolactone
Колич.характеристики :3 с
Коллективы : Government of the Russian Federation [220, 074-02-2018-328]
Место публикации : Macromol. Symp.: WILEY-V C H VERLAG GMBH, 2021. - Vol. 395: 4th International Conference on Progress on Polymers and Composites (NOV 26-28, 2020, ELECTR NETWORK), Is. 1. - Ст.2000283. - ISSN 1022-1360, DOI 10.1002/masy.202000283. - ISSN 1521-3900(eISSN)
Примечания : Cited References:6. - This study was 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".
Аннотация: A simple and low-cost method of obtaining slow-release pesticide formulations is proposed by co-extrusion of a herbicide metribuzin with a low-melting biodegradable polyester poly-epsilon-caprolactone, at a temperature above the melting points of both components. Formulations containing 10%, 20%, and 40% herbicide are prepared. Metribuzin release in water during 7 days of exposition reached 81% from the formulations with the 10% loading and 96% from the specimens with the 40% herbicide loading. Biodegradation and pesticide release from the polymer constructs are studied in the model soil for 14 weeks. Degradation rates of the specimens increased with an increase in pesticide content: between 9% for the 10%-loaded specimen and 20% for the 40%-loaded specimen over 14 weeks. The release of metribuzin from the specimens with the 10-20% and 40% loadings reached 37-38% and 55%, respectively; thus, taking into account soil degradation of the herbicide, the herbicide content in soil reached 23-25% and 33%, respectively, of the initially loaded into the polymer matrix. The used approach is promising to obtain long-term release formulations for soil application.
WOS
Найти похожие

11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bezmaternykh D. M., Puzanov A. V., Kotovshchikov A. V., Drobotov A. V., Tolomeev A. P.
Заглавие : Hydrochemical Indicators of Water Quality in the Norilsk–Pyasino Lake–River System after a Diesel Fuel Spill at Norilsk Heat and Power Plant 3 in 2020
Место публикации : Contemp. Probl. Ecol.: Pleiades journals, 2021. - Vol. 14, Is. 4. - С. 323-334. - ISSN 19954255 (ISSN), DOI 10.1134/S1995425521040028
Аннотация: Abstract: The results of a hydrochemical analysis of the consequences of an accidental fuel release in the Norilsk–Pyasino water system are presented. The pollution of watercourses in the catchment of Lake Pyasino (a nameless (Nadezhdinsky) creek, the Daldykan River, and the Ambarnaya River) with oil products, phenols, easily oxidizable and hard to oxidize organic matter (COD, PO, and BOD5), suspended solids, inorganic salts, and heavy metals at concentrations exceeding the background levels and MPC for fishery water bodies, as well as a temperature rise in waters of the nameless creek near Norilsk Heat and Power Plant 3 (CHPP-3), have been revealed. The contamination of the surface water decreases downstream in ascending order: nameless creek–Daldykan River–Ambarnaya River. The occurrence of oil products, phenols, and organic substances in the surface waters 2 months after the fuel spill is obviously due to their diffusion from the river bottom sediments, which accumulated a considerable quantity of heavy fractions of diesel fuel after the accident. Increased concentrations of Ca, Cu, Zn, Mn, Co, and Ni in the waters of the studied tributaries of Lake Pyasino are not directly related to the accident; they result from the general technogenic pollution of the territory and the increased geochemical background for these elements. Water contamination with oil products and phenols in the studied areas of Lake Pyasino (its central and northern parts) and the Pyasino River has not been detected. However, Pb concentrations exceed the MPC and Cd is recorded in the water, which is probably due to pollutants that accumulated in previous years. © 2021, Pleiades Publishing, Ltd.
Scopus
Найти похожие

12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Schartau A. K., Mariash H. L., Christoffersen K. S., Bogan D., Dubovskaya O. P., Fefilova E. B., Hayden B., Ingvason H. R., Ivanova E. A., Kononova O. N., Kravchuk E. S., Lento J., Majaneva M., Novichkova A. A., Rautio M., Ruhland K. M., Shaftel R., Smol J. P., Vrede T., Kahilainen K. K.
Заглавие : First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors
Место публикации : Freshw. Biol.: Blackwell Publishing Ltd, 2021. - Article in press. - ISSN 00465070 (ISSN), DOI 10.1111/fwb.13783
Аннотация: Arctic freshwaters are facing multiple environmental pressures, including rapid climate change and increasing land-use activities. Freshwater plankton assemblages are expected to reflect the effects of these stressors through shifts in species distributions and changes to biodiversity. These changes may occur rapidly due to the short generation times and high dispersal capabilities of both phyto- and zooplankton. Spatial patterns and contemporary trends in plankton diversity throughout the circumpolar region were assessed using data from more than 300 lakes in the U.S.A. (Alaska), Canada, Greenland, Iceland, the Faroe Islands, Norway, Sweden, Finland, and Russia. The main objectives of this study were: (1) to assess spatial patterns of plankton diversity focusing on pelagic communities; (2) to assess dominant component of ? diversity (turnover or nestedness); (3) to identify which environmental factors best explain diversity; and (4) to provide recommendations for future monitoring and assessment of freshwater plankton communities across the Arctic region. Phytoplankton and crustacean zooplankton diversity varied substantially across the Arctic and was positively related to summer air temperature. However, for zooplankton, the positive correlation between summer temperature and species numbers decreased with increasing latitude. Taxonomic richness was lower in the high Arctic compared to the sub- and low Arctic for zooplankton but this pattern was less clear for phytoplankton. Fennoscandia and inland regions of Russia represented hotspots for, respectively, phytoplankton and zooplankton diversity, whereas isolated regions had lower taxonomic richness. Ecoregions with high ? diversity generally also had high ? diversity, and turnover was the most important component of ? diversity in all ecoregions. For both phytoplankton and zooplankton, climatic variables were the most important environmental factors influencing diversity patterns, consistent with previous studies that examined shorter temperature gradients. However, barriers to dispersal may have also played a role in limiting diversity on islands. A better understanding of how diversity patterns are determined by colonisation history, environmental variables, and biotic interactions requires more monitoring data with locations dispersed evenly across the circumpolar Arctic. Furthermore, the importance of turnover in regional diversity patterns indicates that more extensive sampling is required to fully characterise the species pool of Arctic lakes. © 2021 The Authors. Freshwater Biology published by John Wiley & Sons Ltd.
Scopus
Найти похожие

13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Karpowicz, Maciej, Feniova, Irina, Gladyshev, Michail I., Ejsmont-Karabin, Jolanta, Gorniak, Andrzej, Sushchik, Nadezhda N., Anishchenko, Olesya V., Dzialowski, Andrew R.
Заглавие : Transfer efficiency of carbon, nutrients, and polyunsaturated fatty acids in planktonic food webs under different environmental conditions
Колич.характеристики :14 с
Коллективы : Polish National Science Centre [2016/21/B/NZ8/00434]; Federal Tasks for Institute of Biophysics SB RAS [51.1.1]; Federal Tasks for Siberian Federal University [FSRG-2020-0019]
Место публикации : Ecol. Evol.: WILEY, 2021. - Article in press. - ISSN 2045-7758, DOI 10.1002/ece3.7651
Примечания : Cited References:62. - This research was supported by the Polish National Science Centre (2016/21/B/NZ8/00434). The research was also supported by Federal Tasks for Institute of Biophysics SB RAS No. 51.1.1 and Federal Tasks for Siberian Federal University No. FSRG-2020-0019. The authors are thankful to Joanna Kozowska for her help in the collection of samples.
Предметные рубрики: PHOSPHORUS STOICHIOMETRY
LIGHT-INTENSITY
ZOOPLANKTON
TEMPERATURE
Аннотация: The trophic transfer efficiency (TTE) is an important indicator of ecosystem functioning. However, TTE data from freshwater food webs are ambiguous due to differences in time scales and methods. We investigated the transfer of essential substances (carbon, nutrients, and polyunsaturated fatty acids) through plankton communities in 30 Polish lakes with different trophic status in the middle of summer. The results of our study revealed that different essential substances were transferred from phytoplankton to zooplankton with varying efficiencies. The average TTE of C, N, P, and the sum of omega-3 PUFA were 6.55%, 9.82%, 15.82%, and 20.90%, respectively. Our results also show a large mismatch between the elemental and biochemical compositions of zooplankton and their food during the peak of the summer stagnation, which may further promote the accumulation of essential substances. There were also large differences in TTEs between trophic conditions, with the highest efficiencies in oligotrophic lakes and the lowest in dystrophic and eutrophic lakes. Therefore, our study indicates that disturbances like eutrophication and dystrophication similarly decrease the TTE of essential substances between phytoplankton and zooplankton in freshwater food webs.
WOS
Найти похожие

14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pilla, Rachel M., Mette, Elizabeth M., Williamson, Craig E., Adamovich, Boris V., Adrian, Rita, Anneville, Orlane, Balseiro, Esteban, Ban, Syuhei, Chandra, Sudeep, Colom-Montero, William, Devlin, Shawn P., Dix, Margaret A., Dokulil, Martin T., Feldsine, Natalie A., Feuchtmayr, Heidrun, Fogarty, Natalie K., Gaiser, Evelyn E., Girdner, Scott F., Gonzalez, Maria J., Hambright, K. David, Hamilton, David P., Havens, Karl, Hessen, Dag O., Hetzenauer, Harald, Higgins, Scott N., Huttula, Timo H., Huuskonen, Hannu, Isles, Peter D. F., Joehnk, Klaus D., Keller, Wendel Bill, Klug, Jen, Knoll, Lesley B., Korhonen, Johanna, Korovchinsky, Nikolai M., Koster, Oliver, Kraemer, Benjamin M., Leavitt, Peter R., Leoni, Barbara, Lepori, Fabio, Lepskaya, Ekaterina V., Lottig, Noah R., Luger, Martin S., Maberly, Stephen C., MacIntyre, Sally, McBride, Chris, McIntyre, Peter, Melles, Stephanie J., Modenutti, Beatriz, Muller-Navarra L., Pacholski, Laura, Paterson, Andrew M., Pierson, Don C., Pislegina, Helen V., Plisnier, Pierre-Denis, Richardson, David C., Rimmer, Alon, Rogora, Michela, Rogozin, Denis Y., Rusak, James A., Rusanovskaya, Olga O., Sadro, Steve, Salmaso, Nico, Saros, Jasmine E., Sarvala, Jouko, Saulnier-Talbot, Emilie, Schindler, Daniel E., Shimaraeva, Svetlana V., Silow, Eugene A., Sitoki, Lewis M., Sommaruga, Ruben, Straile, Dietmar, Strock, Kristin E., Swain, Hilary, Tallant, Jason M., Thiery, Wim, Timofeyev, Maxim A., Tolomeev, Alexander P., Tominaga, Koji, Vanni, Michael J., Verburg, Piet, Vinebrooke, Rolf D., Wanzenbock, Josef, Weathers, Kathleen, Weyhenmeyer, Gesa A., Zadereev, Egor S., Zhukova, Tatyana V.
Заглавие : Global data set of long-term summertime vertical temperature profiles in 153 lakes
Колич.характеристики :12 с
Коллективы : Belarus Republican Foundation for Fundamental Research; AnaEE-France; SILA (Syndicat Mixte du Lac d'Annecy); Castle Lake Environmental Research and Education Program, University of Nevada at Reno; EC project "Response of European Freshwater Lakes [ENV4-CT97-0453]; EC-project "Climate Impacts on European Lakes" [EVK1-CT-2002-00121]; Austrian Climate and Energy Fund [K09ACK00046]; NSFNational Science Foundation (NSF) [DEB 1950170]; Crater Lake National Park Long-Term Limnological Monitoring Program; Ministry of Business, Innovation and Employment: Enhancing the Health and Resilience of New Zealand lakes [UOWX1503]; National Capital Authority; ACT, Australia [GB/NERC/BAS/AEDC/00063]; Belgian Science Policy OfficeBelgian Federal Science Policy Office; North Temperate Lakes LTER NTL-LTER [1440297]; NSERC CanadaNatural Sciences and Engineering Research Council of Canada (NSERC); Canada Research Chairs, Canada Foundation for InnovationCanada Foundation for InnovationCanada Research Chairs; University of Regina; Commissione Internazionale per la protezione delle acque italo-svizzere; Natural Environment Research CouncilUK Research & Innovation (UKRI)Natural Environment Research Council (NERC) [NE/R016429/1]; U.S. NSF Arctic LTER [DEB1637459, LTER_EU_IT_008]; Canton of Zurich [18-44-06201, 20-64-46003]; Russian Ministry of Higher Education and Research [FZZE-2020-0026, FZZE-2020-0023]; National Science Foundation Long Term Research in Environmental Biology program [DEB-1242626]; National Park Service (the Inventory and Monitoring Program); Acadia National Park monitoring program; Gordon and Betty Moore FoundationGordon and Betty Moore Foundation; Andrew Mellon Foundation; US National Science FoundationNational Science Foundation (NSF) [9318452, 9726877, 0235755, 0743192, 1255159]; Institut fur Seenforschung, Langenargen (Internationale Gewasserschutzkommission fur den Bodensee -IGKB); University of Michigan Biological StationUniversity of Michigan System; Belgian Science Policy Office (BELSPO)Belgian Federal Science Policy Office [CD/AR/02 A]; Waikato Regional Council; NIWA; Swedish Research CouncilSwedish Research CouncilEuropean Commission [2017-00635, NSF DEB 1754276]; Lacawac Sanctuary and Biological Field Station; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-04-00362 A, 19-05-00428]
Место публикации : Sci. Data: NATURE PORTFOLIO, 2021. - Vol. 8, Is. 1. - Ст.200. - ISSN 2052-4463(eISSN), DOI 10.1038/s41597-021-00983-y
Примечания : Cited References:45. - This work was conceived at the Global Lake Ecological Observatory Network (GLEON), and benefited from continued participation and travel support from GLEON. This manuscript is dedicated to the late Karl Havens and Alon Rimmer, who provided data for this manuscript. Funding and support for this work came from the following sources: the Belarus Republican Foundation for Fundamental Research; the IGB Long-term Ecological Research Programme; SOERE OLA, AnaEE-France, INRA Thonon les Bains, SILA (Syndicat Mixte du Lac d'Annecy), CISALB (Comite Intercommunautaire pour l'Assainissement du Lac du Bourget), and CIPEL (Commission Internationale pour la protection des eaux du Leman); Shiga Prefectural Fisheries Experiment Station (SPFES); Castle Lake Environmental Research and Education Program, University of Nevada at Reno and UC Davis; the Flathead Lake Monitoring program funded through a consortium of state and private funds, and thank the generous citizens of Flathead Lake for their continued support of lake monitoring; the Institute for water ecology, fish biology and lake research and the Institute for Limnology of the Austrian Academy of Sciences (until 2011), and acknowledge the sampling efforts by many individuals over the long period of investigation, especially H. Gassner, M. Luger, H. Ficker, and R. Kurmayer; the EC project "Response of European Freshwater Lakes to Environmental and Climatic Change" (REFLECT, ENV4-CT97-0453), the EC-project "Climate Impacts on European Lakes" (CLIME, EVK1-CT-2002-00121), the project "Risk Analysis of Direct and Indirect Climate effects on deep Austrian Lake Ecosystems" (RADICAL) funded by the Austrian Climate and Energy Fund (No. K09ACK00046) -Austrian Climate Research Programme (ACRP, http://www.klimafonds.gv.at); O. Garcia and E. Bocel for data analysis and management; D. Cabrera, M.W. Dix, G. Ochaeta, S. van Tuylen, M. Orozco, E. Symonds for sampling efforts; NSF grant No. 0947096 to E. Rejmankova, U.S. PeaceCorps and Ministerio de Ambiente y Recursos Naturales of Guatemala; H. Swain, L. Battoe, K. Main, N. Deyrup (Archbold Biological Station), the Florida Lakewatch program, E. Gaiser (Florida International University); the Crater Lake National Park Long-Term Limnological Monitoring Program; the City of Tulsa (R. West and A. Johnson), the Grand River Dam Authority (R. M. Zamor), W.M. Matthews and US ACE (T. Clyde), and the Oklahoma Water Resources Board; Bay of Plenty Regional Council; Ministry of Business, Innovation and Employment: Enhancing the Health and Resilience of New Zealand lakes (UOWX1503); the field and laboratory staff of the South Florida Water Management District for collecting and analyzing the samples; the Norwegian Water Resources and Energy Directorate (NVE), by courtesy of A. S. Kvambekk; the Lake Champlain Long-term Monitoring program (VT DEC and NY DEC); the National Capital Authority, ACT, Australia; Ontario Ministry of Environment, Conservation and Parks; FirstLight Power Resources and Friends of the Lake, especially G. Bollard and R. White; the Finnish Environment Institute SYKE database (Hertta) and S. Mitikka; N. Spinelli and the Lake Wallenpaupack Watershed Management District; Lakes Heywood, Moss, and Sombre: Long-Term Monitoring of Signy Lake Chemistry by BAS 1963-2004. Ref: GB/NERC/BAS/AEDC/00063, and dataset supplied by the Polar Data Centre under Open Government License (c) NERC-BAS, Lake Nkugute: Beadle (1966), CLANIMAE project funded by the Belgian Science Policy Office; Dr. L.; Garibaldi; NSF awards #1418698 and North Temperate Lakes LTER NTL-LTER #1440297; NSERC Canada, Canada Research Chairs, Canada Foundation for Innovation, Province of Saskatchewan, University of Regina, and Queen's University Belfast; Commissione Internazionale per la protezione delle acque italo-svizzere, Ufficio della protezione delle acque e dell'approvvigionamento idrico del Canton Ticino; KamchatNIRO scientists; Natural Environment Research Council award number NE/R016429/1 as part of the UK-SCaPE programme delivering National Capability; U.S. NSF Arctic LTER DEB1637459; Belgian Science Policy (Choltic, Climlake, Climfish); Ontario Ministry of Natural Resources' Harkness Laboratory of Fisheries Research, especially T. Middel; Max-Planck-Institute for Limnology Plon; staff at Erken Laboratory; Mohonk Preserve and D. Smiley; Lake Sunapee Protective Association; KLL database; International Commission for the Protection of Swiss-Italian Waters (CIPAIS) and the LTER (Long Term Ecological Research) Italian network, site "Southern Alpine lakes", LTER_EU_IT_008; staff and students at MECP's Dorset Environmental Science Centre; the LTER (Long-Term Ecological Research) Italian network, site "Southern Alpine lakes", IT08-005-A (http://www.lteritalia.it), with the support of the ARPA Veneto; Prof. L. Chapman, McGill University (Montreal, Quebec, Canada); Amt fur Abfall, Wasser, Energie und Luft (AWEL) of the Canton of Zurich; grants of RSCF project #18-44-06201 and #20-64-46003, of Russian Ministry of Higher Education and Research (projects. FZZE-2020-0026;. FZZE-2020-0023), and of Foundation for support of applied ecological studies "Lake Baikal" (https://baikalfoundation.ru/project/tochka-1/); National Science Foundation Long Term Research in Environmental Biology program (DEB-1242626); the National Park Service (the Inventory and Monitoring Program as well as the Air Resources Division) and Acadia National Park and the Acadia National Park monitoring program; Gordon and Betty Moore Foundation, the Andrew Mellon Foundation, the US National Science Foundation and the Bristol Bay salmon processors; J. Franzoi, G. Larsen, and S. Morales, and the LTSER platform Tyrolean Alps, which belongs to the national and international long-term ecological research network (LTER-Austria, LTER Europe and ILTER); Institut fur Seenforschung, Langenargen (Internationale Gewasserschutzkommission fur den Bodensee -IGKB); University of Michigan Biological Station (A. Schubel) and Cooperative Institute for Great Lakes Research (R. Miller); the Belgian Science Policy Office (BELSPO) is acknowledged for supporting research on Lake Kivu through the research project EAGLES (CD/AR/02 A); US National Science Foundation awards 9318452, 9726877, 0235755, 0743192 and 1255159; West Coast Regional Council, the Bay of Plenty Regional Council, and Waikato Regional Council, and NIWA; D. Schindler (funding and data access) and B. Parker (logistical support and data management); Swedish Infrastructure for Ecosystem Science (SITES) and the Swedish Research Council under the grant no 2017-00635; NSF DEB 1754276 and NSF DEB 1950170, the Ohio Eminent Scholar in Ecosystem Ecology fund, and Lacawac Sanctuary and Biological Field Station; Russian Foundation for Basic Research, grant. 19-04-00362 A and. 19-05-00428.
Предметные рубрики: CLIMATE-CHANGE
THERMAL STRATIFICATION
OXYGEN DEPLETION
FISH
Аннотация: Climate change and other anthropogenic stressors have led to long-term changes in the thermal structure, including surface temperatures, deepwater temperatures, and vertical thermal gradients, in many lakes around the world. Though many studies highlight warming of surface water temperatures in lakes worldwide, less is known about long-term trends in full vertical thermal structure and deepwater temperatures, which have been changing less consistently in both direction and magnitude. Here, we present a globally-expansive data set of summertime in-situ vertical temperature profiles from 153 lakes, with one time series beginning as early as 1894. We also compiled lake geographic, morphometric, and water quality variables that can influence vertical thermal structure through a variety of potential mechanisms in these lakes. These long-term time series of vertical temperature profiles and corresponding lake characteristics serve as valuable data to help understand changes and drivers of lake thermal structure in a time of rapid global and ecological change.
WOS
Найти похожие

15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pilla R. M., Mette E. M., Williamson C. E., Adamovich B. V., Adrian R., Anneville O., Balseiro E., Ban S., Chandra S., Colom-Montero W., Devlin S. P., Dix M. A., Dokulil M. T., Feldsine N. A., Feuchtmayr H., Fogarty N. K., Gaiser E. E., Girdner S. F., Gonzalez M. J., Hambright K. D., Hamilton D. P., Havens K., Hessen D. O., Hetzenauer H., Higgins S. N., Huttula T. H., Huuskonen H., Isles P. D.F., Joehnk K. D., Keller W. B., Klug J., Knoll L. B., Korhonen J., Korovchinsky N. M., Koster O., Kraemer B. M., Leavitt P. R., Leoni B., Lepori F., Lepskaya E. V., Lottig N. R., Luger M. S., Maberly S. C., MacIntyre S., McBride C., McIntyre P., Melles S. J., Modenutti B., Muller-Navarra D. C., Pacholski L., Paterson A. M., Pierson D. C., Pislegina H. V., Plisnier P. -D., Richardson D. C., Rimmer A., Rogora M., Rogozin D. Y., Rusak J. A., Rusanovskaya O. O., Sadro S., Salmaso N., Saros J. E., Sarvala J., Saulnier-Talbot E., Schindler D. E., Shimaraeva S. V., Silow E. A., Sitoki L. M., Sommaruga R., Straile D., Strock K. E., Swain H., Tallant J. M., Thiery W., Timofeyev M. A., Tolomeev A. P., Tominaga K., Vanni M. J., Verburg P., Vinebrooke R. D., Wanzenbock J., Weathers K., Weyhenmeyer G. A., Zadereev E. S., Zhukova T. V.
Заглавие : Global data set of long-term summertime vertical temperature profiles in 153 lakes
Место публикации : Sci. Data: Nature Research, 2021. - Vol. 8, Is. 1. - Ст.200. - ISSN 20524463 (ISSN), DOI 10.1038/s41597-021-00983-y
Аннотация: Climate change and other anthropogenic stressors have led to long-term changes in the thermal structure, including surface temperatures, deepwater temperatures, and vertical thermal gradients, in many lakes around the world. Though many studies highlight warming of surface water temperatures in lakes worldwide, less is known about long-term trends in full vertical thermal structure and deepwater temperatures, which have been changing less consistently in both direction and magnitude. Here, we present a globally-expansive data set of summertime in-situ vertical temperature profiles from 153 lakes, with one time series beginning as early as 1894. We also compiled lake geographic, morphometric, and water quality variables that can influence vertical thermal structure through a variety of potential mechanisms in these lakes. These long-term time series of vertical temperature profiles and corresponding lake characteristics serve as valuable data to help understand changes and drivers of lake thermal structure in a time of rapid global and ecological change. © 2021, The Author(s).
Scopus
Найти похожие

16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Schartau, Ann Kristin, Mariash, Heather L., Christoffersen, Kirsten S., Bogan, Daniel, Dubovskaya, Olga P., Fefilova, Elena B., Hayden, Brian, Ingvason, Haraldur R., Ivanova, Elena A., Kononova, Olga N., Kravchuk, Elena S., Lento, Jennifer, Majaneva, Markus, Novichkova, Anna A., Rautio, Milla, Ruhland, Kathleen M., Shaftel, Rebecca, Smol, John P., Vrede, Tobias, Kahilainen, Kimmo K.
Заглавие : First circumpolar assessment of Arctic freshwater phytoplankton and zooplankton diversity: Spatial patterns and environmental factors
Колич.характеристики :18 с
Коллективы : RFBRRussian Foundation for Basic Research (RFBR) [20-04-00145_a]
Место публикации : Freshw. Biol.: WILEY, 2021. - Article in press. - ISSN 0046-5070, DOI 10.1111/fwb.13783. - ISSN 1365-2427(eISSN)
Примечания : Cited References:78. - RFBR, Grant/Award Number: 20-04-00145_a
Предметные рубрики: HIGH-LATITUDE LAKES
CLIMATE-CHANGE
SPECIES RICHNESS
BETA DIVERSITY
Аннотация: Arctic freshwaters are facing multiple environmental pressures, including rapid climate change and increasing land-use activities. Freshwater plankton assemblages are expected to reflect the effects of these stressors through shifts in species distributions and changes to biodiversity. These changes may occur rapidly due to the short generation times and high dispersal capabilities of both phyto- and zooplankton. Spatial patterns and contemporary trends in plankton diversity throughout the circumpolar region were assessed using data from more than 300 lakes in the U.S.A. (Alaska), Canada, Greenland, Iceland, the Faroe Islands, Norway, Sweden, Finland, and Russia. The main objectives of this study were: (1) to assess spatial patterns of plankton diversity focusing on pelagic communities; (2) to assess dominant component of beta diversity (turnover or nestedness); (3) to identify which environmental factors best explain diversity; and (4) to provide recommendations for future monitoring and assessment of freshwater plankton communities across the Arctic region. Phytoplankton and crustacean zooplankton diversity varied substantially across the Arctic and was positively related to summer air temperature. However, for zooplankton, the positive correlation between summer temperature and species numbers decreased with increasing latitude. Taxonomic richness was lower in the high Arctic compared to the sub- and low Arctic for zooplankton but this pattern was less clear for phytoplankton. Fennoscandia and inland regions of Russia represented hotspots for, respectively, phytoplankton and zooplankton diversity, whereas isolated regions had lower taxonomic richness. Ecoregions with high alpha diversity generally also had high beta diversity, and turnover was the most important component of beta diversity in all ecoregions. For both phytoplankton and zooplankton, climatic variables were the most important environmental factors influencing diversity patterns, consistent with previous studies that examined shorter temperature gradients. However, barriers to dispersal may have also played a role in limiting diversity on islands. A better understanding of how diversity patterns are determined by colonisation history, environmental variables, and biotic interactions requires more monitoring data with locations dispersed evenly across the circumpolar Arctic. Furthermore, the importance of turnover in regional diversity patterns indicates that more extensive sampling is required to fully characterise the species pool of Arctic lakes.
WOS
Найти похожие

17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin, Anatoly N., Kazantseva, Eugenia A.
Заглавие : Constructing slow-release formulations of herbicide metribuzin using its co-extrusion with biodegradable polyester poly-epsilon-caprolactone
Колич.характеристики :10 с
Коллективы : Project "Agropreparations of the new generation: a strategy of construction and realization" [074-02-2018-328]; Government of the Russian Federation [220]
Место публикации : J. Environ. Sci. Health Part B-Pestic. Contam. Agric. Wastes: TAYLOR & FRANCIS INC, 2021. - Article in press. - ISSN 0360-1234, DOI 10.1080/03601234.2021.1911206. - ISSN 1532-4109(eISSN)
Примечания : Cited References:43. - This study was 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".
Аннотация: Different technologies to prepare long term pesticide forms include polymer coating, preparing composites and encapsulating pesticides in nanoparticles. A simple and low-cost method was proposed to obtain slow-release formulations by co-extrusion of a pesticide with a biodegradable polymer at a temperature above the melting points of both components. A herbicide metribuzin and low-melting polyester poly-epsilon-caprolactone were chosen for this work. Formulations containing 10%, 20%, and 40% herbicide were prepared. During 7 days of their exposition in water, it was released from 81% to 96% of initially loaded metribuzin; the highest release was detected for 40%-loaded forms. Biodegradation of the constructs and pesticide release were further studied in the model soil. Degradation rates of the specimens increased with an increase in pesticide content, from 9% to 20% over 14 weeks for the 10%/20%-loaded and the 40%-loaded specimens, respectively. The release of metribuzin reached, respectively, 37-38% and 55%. The herbicide content in soil was lower due to its partial degradation in soil; it reached 23-25% and 33%, respectively, from initially loaded into the polymer matrix. Release kinetics of metribuzin in water as in soil best fitted the First-order model. The used approach is promising for obtaining long-term release formulations for soil applications.
WOS
Найти похожие

18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bezmaternykh D. M., Puzanov A. V., Kotovshchikov A. V., Drobotov A. V., Tolomeev A. P.
Заглавие : Hydrochemical Indicators of Water Quality in the Norilsk-Pyasino Lake-River System after a Diesel Fuel Spill at Norilsk Heat and Power Plant 3 in 2020
Колич.характеристики :12 с
Место публикации : Contemp. Probl. Ecol.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2021. - Vol. 14, Is. 4. - С. 323-334. - ISSN 1995-4255, DOI 10.1134/S1995425521040028. - ISSN 1995-4263(eISSN)
Примечания : Cited References:22
Аннотация: The results of a hydrochemical analysis of the consequences of an accidental fuel release in the Norilsk-Pyasino water system are presented. The pollution of watercourses in the catchment of Lake Pyasino (a nameless (Nadezhdinsky) creek, the Daldykan River, and the Ambarnaya River) with oil products, phenols, easily oxidizable and hard to oxidize organic matter (COD, PO, and BOD5), suspended solids, inorganic salts, and heavy metals at concentrations exceeding the background levels and MPC for fishery water bodies, as well as a temperature rise in waters of the nameless creek near Norilsk Heat and Power Plant 3 (CHPP-3), have been revealed. The contamination of the surface water decreases downstream in ascending order: nameless creek-Daldykan River-Ambarnaya River. The occurrence of oil products, phenols, and organic substances in the surface waters 2 months after the fuel spill is obviously due to their diffusion from the river bottom sediments, which accumulated a considerable quantity of heavy fractions of diesel fuel after the accident. Increased concentrations of Ca, Cu, Zn, Mn, Co, and Ni in the waters of the studied tributaries of Lake Pyasino are not directly related to the accident; they result from the general technogenic pollution of the territory and the increased geochemical background for these elements. Water contamination with oil products and phenols in the studied areas of Lake Pyasino (its central and northern parts) and the Pyasino River has not been detected. However, Pb concentrations exceed the MPC and Cd is recorded in the water, which is probably due to pollutants that accumulated in previous years.
WOS
Найти похожие

19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T., Kiselev E., Nemtsev I., Lukyanenko А., Sukovatyi A., Kuzmin A., Ryltseva G., Shishatskaya E.
Заглавие : Properties of degradable polyhydroxyalkanoates with different monomer compositions
Место публикации : Int. J. Biol. Macromol.: Elsevier B.V., 2021. - Vol. 182. - С. 98-114. - ISSN 01418130 (ISSN), DOI 10.1016/j.ijbiomac.2021.04.008
Аннотация: Purpose: To synthesize and investigate polyhydroxyalkanoates (PHAs) with different monomer composition and percentages and polymer films prepared from them. Results: Various PHAs: homopolymer poly-3-hydroxybutyrate P(3HB) and 2-, 3-, and 4-component copolymers comprising various combinations of 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), 4-hydroxybutyrate (4HB), and 3-hydroxyhexanoate (3HHx) monomers were synthesized under specialized conditions. Relationships were found between the monomer composition of PHAs and their molecular-weight and thermal properties and degree of crystallinity. All copolymers had decreased weight average molecular weights, Mw (to 390–600 kDa), and increased values of polydispersity (3.2–4.6) compared to the P(3HB). PHA copolymers showed different thermal behavior: an insignificant decrease in Tmelt and the presence of the second peak in the melting region and changes in parameters of crystallization and glass transition. At the same time, they retained thermostability, and the difference between Tmelt and Tdegr was at least 100–120 °C. Incorporation of 4HB, 3HV, and 3HHx monomer units into the 3-hydroxybutyrate chain caused changes in the amorphous to crystalline ratio and decreased the degree of crystallinity (Cx) to 20–40%. According to the degree to which the monomers reduced crystallinity, they were ranked as follows: 4HB – 3HHx – 3HV. A unique set of films was produced; their surface properties and physical/mechanical properties were studied as dependent on PHA composition; monomers other than 3-hydroxybutyrate were found to enhance hydrophilicity, surface development, and elasticity of polymer films. Conclusion: An innovative set of PHA copolymers was synthesized and solution-cast films were prepared from them; the copolymers and films were investigated as dependent on polymer chemical composition. Results obtained in the present study contribute to the solution of a critical issue of producing degradable polymer materials. © 2021 Elsevier B.V.
Scopus
Найти похожие

20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ronzhin, Nikita O., Posokhina, Ekaterina D., Mikhlina, Elena, V, Mikhlin, Yuri L., Simunin, Mikhail M., Tarasova, Lyudmila S., Vorobyev, Sergey A., Bondar, Vladimir S., Ryzhkov, Ilya I.
Заглавие : A new composite material based on alumina nanofibers and detonation nanodiamonds: synthesis, characterization, and sensing application
Колич.характеристики :14 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-29-19078]
Место публикации : J. Nanopart. Res.: SPRINGER, 2021. - Vol. 23, Is. 9. - Ст.199. - ISSN 1388-0764, DOI 10.1007/s11051-021-05309-y. - ISSN 1572-896X(eISSN)
Примечания : Cited References:57. - This work is partially supported by the Russian Foundation for Basic Research, Project 18-29-19078 (E. V. Mikhlina, M. M. Simunin, I. Ryzhkov).
Предметные рубрики: ELECTROCHEMICAL ENERGY-STORAGE
SELECTIVE DETECTION
PHENOL DETECTION
Аннотация: The development of inexpensive, easy-to-produce, and easy-to-use analytical tools for detection of harmful and toxic substances is a relevant research problem with direct applications in environmental monitoring and protection. In this work, we propose a novel composite material based on alumina nanofibers and detonation nanodiamonds for detection of phenol in aqueous medium. The composite material was obtained by mixing an aqueous suspension of alumina nanofibers with a diameter of 10-15 nm and a length of several microns and a hydrosol of nanodiamonds with an average cluster size of 70 nm. The mechanisms underlying the interaction of these nanomaterials are clarified and the physicochemical properties of the composite are investigated. The SEM and TEM studies show that the obtained composite has a network structure, in which clusters of nanodiamonds (10-20 nm in diameter) are distributed over the surface of nanofibers. Coupling of nanomaterials occurs due to opposite signs of their zeta potentials, which results in electrostatic attraction and subsequent chemical bonding as indicated by the X-ray photoelectron spectroscopy and simultaneous thermal analysis. The bonding apparently occurs between functional groups (mainly carboxyl) on the surface of nanodiamonds and amphoteric hydroxyl groups on the surface of alumina nanofibers. The proposed composite allows an easy-to-perform colorimetric analysis for qualitative and quantitative determination of phenol in aqueous samples with linear response over a wide range of concentrations (0.5-106 mu M). Multiple tests have shown that the composite is reusable and retains its catalytic function for at least 1 year during storage at room temperature.
WOS
Найти похожие