scholarly journals The experimental research of sorption and destruction of diesel fuel by fucus algae of the Barents sea

2021 ◽  
Vol 937 (2) ◽  
pp. 022058
Author(s):  
G Voskoboinikov ◽  
D Pugovkin ◽  
L Metelkova
Keyword(s):  
Diesel Fuel ◽  
Petroleum Hydrocarbons ◽  
Barents Sea ◽  
Decisive Role ◽  
Petroleum Products ◽  
Marine Water ◽  
Symbiotic Association ◽  
Main Work ◽  
First Time

Abstract There was shown the role of live and dry algae Fucus vesiculosus (Phaeophyceae) in the purification of the coastal waters from petroleum products. It was revealed that live algae can be effectively used for preventive, daily purification of marine water, when the content of diesel fuel does not exceed 3 mg/l. For the first time, the prospect of using dry fucus for bioremediation of marine water in emergencies creating a concentration of petroleum products in water of 1 g/l has been determined. In the case of using living plants to neutralize toxicant, the decisive role in the process belongs to the symbiotic association of algae and hydrocarbon-oxidizing bacteria. In case of using dry algae, dried macrophytes become a reservoir for the accumulation of diesel fuel. The main work on the destruction of hydrocarbons, probably, lies on HOB, as well as on physicochemical processes. Metabolic processes inherent in living algae and leading to the destruction of petroleum hydrocarbons weren’t determined in this case.

scholarly journals In memory to Ye. V. Naumenko

1995 ◽  
Vol 41 (3) ◽  
pp. 47-47
Author(s):  
Editorial team of Problems of endocrinology
Keyword(s):  
Significant Contribution ◽  
Neural Pathways ◽  
Medical Sciences ◽  
Russian Scientist ◽  
Animal Domestication ◽  
Main Work ◽  
Neuroendocrine Mechanisms ◽  
First Time ◽  
At Home

On November 13, 1994, science suffered a heavy loss - an outstanding Russian scientist, professor, doctor of medical sciences, the founder of a number of original directions in world neuroendocrinology Evgeny Vladimirovich Naumenko prematurely passed away. In the 60s, the scientific interests of E.V. Naumenko were focused on studying the role of biogenic brain amines in the neurochemical regulation of the hypothalamic-pituitary-adrenocortical system. In particular, he proved for the first time that one of the final hypothalamic neural pathways stimulating the synthesis and secretion of corticoliberin is serotonergic in nature. The results of these widely known studies at home and abroad brought well-deserved fame to a neuroendocrinologist from Siberia. In the last 20 years, the main work of E.V. Naumenko concerned the study of genetic evolutionary and ontogenetic aspects of stress, the role of neuroendocrine mechanisms in animal domestication processes, the role of neurochemical brain mechanisms in the dominant behavior of individuals in micropopulations, and the study of a new model of hereditary arterial hypertension. Professor E.V. Naumenko has published over 300 works, including more than a dozen major monographic publications published at home and abroad. These publications are widely known among specialists, they have made a significant contribution to the development of neuroendocrinology and brought well-deserved recognition to their author.

scholarly journals Usage of Enzymes of Algae-macrophytes Antioxidant System for Monitoring Water Pollution By Oil Products

2020 ◽  
Author(s):  
Inna Ryzhik ◽  
Ekaterina Dobychina ◽  
Maria Klindukh ◽  
Dmitry Salahov ◽  
Yana Glukhikh
Keyword(s):  
Hydrogen Peroxide ◽  
Antioxidant System ◽  
Diesel Fuel ◽  
Catalase Activity ◽  
Barents Sea ◽  
Negative Impact ◽  
Petroleum Products ◽  
Oil Products ◽  
Palmaria Palmata ◽  
The Impact

Macrophyte algae are perspective indicator species for assessing the environmental impact of pollutants. One of the ways to estimate the negative impact is to change the activity of enzymes of the antioxidant system. The possibility of using hydrogen peroxide, catalase and superoxide dismutase (SOD) is analyzed in the research for assessing the anthropogenic load on algae macrophytes of different systematic groups: Palmaria palmata (L.) O. Kuntze; Fucus vesiculosus L., Ulvaria obscura (Kützing) Gayral ex Bliding. The natural level of enzymes (in July) and its change under the influence of oil products (diesel fuel) on algae growing in the Barents sea were measured. It is shown that under natural conditions the content of hydrogen peroxide and catalase activity decrease in the series U. obscura < P. palmata < F. vesiculosus; the activity of SOD decreases in the series P. palmata < U. obscura < F. vesiculosus. When diesel fuel is introduced into the habitat of algae, the concentration of hydrogen peroxide in the cells of U. obscura and P. palmata decreases and in F. vesiculosus-increases. Catalase activity in P. palmata and U. obscura increases and catalase activity is not various in F. vesiculosus. The activity of SOD in the prototypes of G. obscura and P. palmata decreases and it remains unchanged in F. vesiculosus. It is shown that the enzyme complex Ulvaria obscura can be used to assess the impact of diesel fuel and only SOD can be used in P. palmata. No reaction of SOD and CAT to the presence of petroleum products was detected in F. vesiculosus.

scholarly journals In memory to Ye. V. Naumenko

1995 ◽  
Vol 41 (3) ◽  
pp. 48-48
Author(s):  
Editorial team of Problems of endocrinology
Keyword(s):  
Significant Contribution ◽  
Neural Pathways ◽  
Medical Sciences ◽  
Russian Scientist ◽  
Animal Domestication ◽  
Main Work ◽  
Neuroendocrine Mechanisms ◽  
First Time ◽  
At Home

On November 13, 1994, science suffered a heavy loss - an outstanding Russian scientist, professor, doctor of medical sciences, the founder of a number of original directions in world neuroendocrinology Evgeny Vladimirovich Naumenko prematurely passed away. In the 60s, the scientific interests of E.V. Naumenko were focused on studying the role of biogenic brain amines in the neurochemical regulation of the hypothalamic-pituitary-adrenocortical system. In particular, he proved for the first time that one of the final hypothalamic neural pathways stimulating the synthesis and secretion of corticoliberin is serotonergic in nature. The results of these widely known studies at home and abroad brought well-deserved fame to a neuroendocrinologist from Siberia. In the last 20 years, the main work of E.V. Naumenko concerned the study of genetic evolutionary and ontogenetic aspects of stress, the role of neuroendocrine mechanisms in animal domestication processes, the role of neurochemical brain mechanisms in the dominant behavior of individuals in micropopulations, and the study of a new model of hereditary arterial hypertension. Professor E.V. Naumenko has published over 300 works, including more than a dozen major monographic publications published at home and abroad. These publications are widely known among specialists, they have made a significant contribution to the development of neuroendocrinology and brought well-deserved recognition to their author.

scholarly journals ADAPTATION, REGULATION OF GROWTH AND REPRODUCTION AND RATIONAL USE OF ALGAE-MACROPHYTES OF THE BARENTS SEA

2020 ◽  
Vol 11 (4) ◽  
pp. 150-178
Author(s):  
G.M. Voskoboinikov ◽  
◽  
V.N. Маkarov ◽  
S.V. Malavenda ◽  
D.V. Pugovkin ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Barents Sea ◽  
Lower Boundary ◽  
Palmaria Palmata ◽  
Symbiotic Association ◽  
Seasonal Temperature ◽  
Electron Microscopic ◽  
Tidal Zone ◽  
The Barents Sea ◽  
First Time

The results of algological researches of the Murmansk Marine Biological Institute for the period from 2015 till 2019 are presented with the following achievements. Analysis of the expeditionary samples revealed 79 species of algae macrophyte, rarely found at the Murman coast, among them 10 species were Chlorophyta, 33 –Phaeophyceae, 36 –Rhodophyta. A significant increase of the occurrence (presence) of Ulva lactuca L.at the Murmansk coast of the Barents Sea in 2009–2019 was noted, due to positive climatic anomalies caused by an increase of the influx of the Atlantic waters. It has been shown for the first time that the various morphological forms of the brown alga Fucus distichuslived on the littoral of the Murmansk coast of the Barents Sea are genetically homogeneous. The morphology of embryogenesis, early ontogenesis of F. distichusis described. It was determined that hydrostatic pressure (from 4 atm) negatively affects the development of spores of Alaria esculentaand Palmaria palmata, and can determine the lower boundary of algae growth. It was shown that a change in the activity of enzymes of the antioxidant system P. palmata: (catalase and superoxide dismutase) depending on the temperature of the environment) is one of the mechanisms of adaptation of algae to growth in the tidal zone and seasonal temperature fluctuations. There were revealed the negative effect of the red algae P. palmataon the growth of F. distichus, F. serratusand the positive effect of Fucus on the growth of P. palmata. A change in the seasonal concentration of 4 B vitamins was determined (riboflavin, pantothenic acid, nicotinic acid and pyridoxine) of P. palmata. Isolated vitamins take part in spore formation and can act as antioxidants. An electron microscopic analysis of the “young” multicellular sporophytes of Saccharina latissimarevealed the presence in cells of a developed photosynthetic reticulum, and a high partial mass of mitochondria, energy structures that apparently provide an intensive process of cell division at this stage of ontogenesis. The participation of florotannins in the regeneration of thallus of Fucus algae was demonstrated. The data on the quantitative and qualitative composition of cultivated and uncultivated epiphytic bacteria of Fucus algae from clean and oil polluted areas of coastal waters of the Barents Sea have been obtained.For the first time, the evidence base presents that morphologically and systematically various macrophyte algae, differing in structure and systematic affiliation, possess in their ability to form a symbiotic association with hydrocarbon-oxidizing bacteria, they show a pronounced ability to sorb and to destruct the oil products, which determines their significant role in bioremediation of coastal waters.

scholarly journals Influence of diesel fuel on the composition and content of free amino acids in the green alga Acrosiphonia arcta

2021 ◽  
Vol 937 (2) ◽  
pp. 022010
Author(s):  
M Klindukh ◽  
E Dobychina ◽  
M Makarov ◽  
I Ryzhik
Keyword(s):  
Amino Acids ◽  
Diesel Fuel ◽  
Free Amino Acids ◽  
Free Amino ◽  
Barents Sea ◽  
Petroleum Products ◽  
Inhibitory Effect ◽  
Arctic Ecosystems ◽  
Negative Effect ◽  
The Impact

Abstract Arctic ecosystems are the most sensitive and vulnerable to anthropogenic impact, namely, the influence of petroleum products. The aim is to identify the effect of diesel fuel (DF) on the composition of free amino acids (FAA) in Acrosiphonia arcta in Barents Sea. The impact of DF concentrations of 20 - 3000 maximal permitted concentration (MPC) was analyzed. It was found that A. arcta contains 20 amino acids, 16 of which are proteinogenic and 8 are essential. The composition of the FAA pool did not change under the influence of DF, but the content of individual FAA and their total amount differed. The ratio of the dominant amino acids changes: at concentrations of DF up to 1000 MPC content of proline increased, and decreased at higher concentrations of DF. Under the influence of DF in concentration of 3000 MPC, taurine content significant increased. The least negative effect was exerted under the influence of DF concentration of 20 MPC, more significant - at the concentration more than 1000 MPC. Changes in the content of FAA are probably associated with the redirection of the synthesis pathways of amino acid groups, as well as the inhibitory effect of the toxicant on protein synthesis.

scholarly journals The circumstances of the origin and history of the development of the church schism of the Belarusian diaspora in the first half of the 1980s

2020 ◽  
pp. 66-79
Author(s):  
Aliaxandr V. Slesarau
Keyword(s):  
Church Leadership ◽  
Decisive Role ◽  
Orthodox Church ◽  
History Of ◽  
The Difference ◽  
Church Schism ◽  
First Time ◽  
Church Governance ◽  
The Church

The article describes the history of the origin and development of the intra-confessional conflict that engulfed the Belarusian Autocephalous Orthodox Church (BAOC) in the first half of the 1980s. For the first time, a conclusion is drawn regarding the decisive role of the ideological prerequisites for the emergence of a split, rooted in the difference in approaches to understanding the principles of church governance. If the highest church leadership was characterised by a commitment to the ideas of the key role of hierarchy (clericalism), then representatives of parishes and Belarusian sociopolitical organisations insisted on the obligation to implement the principle of collegiality. The conflict developed as a result of the structural and administrative division of the BAOC, mutual compromise of opponents, a significant reduction in the financial possibilities of parishes and the disintegration of the Belarusian diaspora. Unlike the Ukrainian Autocephalous Orthodox Church in exile, divided and weakened by internal contradictions, the BAOC was unable to expand its activities in Belarus in the late 1980s and 1990s.

Psychological Resilience Provides No Independent Protection From Suicidal Risk

Crisis ◽  
2016 ◽  
Vol 37 (2) ◽  
pp. 130-139 ◽  
Author(s):  
Danica W. Y. Liu ◽  
A. Kate Fairweather-Schmidt ◽  
Richard Burns ◽  
Rachel M. Roberts ◽  
Kaarin J. Anstey
Keyword(s):  
Risk Factors ◽  
Well Being ◽  
Current Status ◽  
Psychological Resilience ◽  
Cross Sectional ◽  
Life Project ◽  
Resilience Factors ◽  
First Time

Abstract. Background: Little is known about the role of resilience in the likelihood of suicidal ideation (SI) over time. Aims: We examined the association between resilience and SI in a young-adult cohort over 4 years. Our objectives were to determine whether resilience was associated with SI at follow-up or, conversely, whether SI was associated with lowered resilience at follow-up. Method: Participants were selected from the Personality and Total Health (PATH) Through Life Project from Canberra and Queanbeyan, Australia, aged 28–32 years at the first time point and 32–36 at the second. Multinomial, linear, and binary regression analyses explored the association between resilience and SI over two time points. Models were adjusted for suicidality risk factors. Results: While unadjusted analyses identified associations between resilience and SI, these effects were fully explained by the inclusion of other suicidality risk factors. Conclusion: Despite strong cross-sectional associations, resilience and SI appear to be unrelated in a longitudinal context, once risk/resilience factors are controlled for. As independent indicators of psychological well-being, suicidality and resilience are essential if current status is to be captured. However, the addition of other factors (e.g., support, mastery) makes this association tenuous. Consequently, resilience per se may not be protective of SI.

Adam Zalužanský’s “De sexu plantarum” (1592): an early pioneering chapter on plant sexuality

2013 ◽  
Vol 40 (2) ◽  
pp. 244-256 ◽  
Author(s):  
Holger Funk
Keyword(s):  
Nineteenth Century ◽  
English Translation ◽  
History Of Botany ◽  
Main Work ◽  
Botanical History ◽  
History Of ◽  
The University ◽  
First Time

In the history of botany, Adam Zalužanský (d. 1613), a Bohemian physician, apothecary, botanist and professor at the University of Prague, is a little-known personality. Linnaeus's first biographers, for example, only knew Zalužanský from hearsay and suspected he was a native of Poland. This ignorance still pervades botanical history. Zalužanský is mentioned only peripherally or not at all. As late as the nineteenth century, a researcher would be unaware that Zalužanský’s main work Methodi herbariae libri tres actually existed in two editions from two different publishers (1592, Prague; 1604, Frankfurt). This paper introduces the life and work of Zalužanský. Special attention is paid to the chapter “De sexu plantarum” of Zalužanský’s Methodus, in which, more than one hundred years before the well-known De sexu plantarum epistola of R. J. Camerarius, the sexuality of plants is suggested. Additionally, for the first time, an English translation of Zalužanský’s chapter on plant sexuality is provided.

Energetic properties of peat saturated with petroleum products

2020 ◽  
Vol 13 (2) ◽  
pp. 105-109
Author(s):  
E. S. Dremicheva
Keyword(s):  
Crude Oil ◽  
Diesel Fuel ◽  
Energy Use ◽  
Experimental Studies ◽  
Calorific Value ◽  
Petroleum Products ◽  
Ash Content ◽  
Motor Oil ◽  
Initial Sample

This paper presents a method of sorption using peat for elimination of emergency spills of crude oil and petroleum products and the possibility of energy use of oil-saturated peat. The results of assessment of the sorbent capacity of peat are presented, with waste motor oil and diesel fuel chosen as petroleum products. Natural peat has been found to possess sorption properties in relation to petroleum products. The sorbent capacity of peat can be observed from the first minutes of contact with motor oil and diesel fuel, and significantly depends on their viscosity. For the evaluation of thermal properties of peat saturated with petroleum products, experimental studies have been conducted on determination of moisture and ash content of as-fired fuel. It is shown that adsorbed oil increases the moisture and ash content of peat in comparison with the initial sample. Therefore, when intended for energy use, peat saturated with petroleum products is to be subjected to additional drying. Simulation of net calorific value has been performed based on the calorific values of peat and petroleum products with different ratios of petroleum product content in peat and for a saturated peat sample. The obtained results are compared with those of experiments conducted in a calorimetric bomb and recalculated for net calorific value. A satisfactory discrepancy is obtained, which amounts to about 12%. Options have been considered providing for combustion of saturated peat as fuel (burnt per se and combined with a solid fuel) and processing it to produce liquid, gaseous and solid fuels. Peat can be used to solve environmental problems of elimination of emergency spills of crude oil and petroleum products and as an additional resource in solving the problem of finding affordable energy.

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