scholarly journals The copper content in the organs and tissues of Mytilus galloprovincialis Lamarck, 1819 and the flow of its sedimentary deposition into bottom sediments in the farms of the Black Sea aquaculture

2018 ◽  
Vol 3 (4) ◽  
pp. 64-75 ◽  
Author(s):  
N. V. Pospelova ◽  
V. N. Egorov ◽  
N. S. Chelyadina ◽  
M. V. Nekhoroshev
Keyword(s):  
Chemical Composition ◽  
Copper Content ◽  
Water Environment ◽  
The Black Sea ◽  
Content Change ◽  
Exchange Processes ◽  
Mussel Farms ◽  
Copper Exchange ◽  
Mussel Farm

The role of mussels in formation of water chemical composition is determined by the peculiarities of sorption and trophodynamic processes. Copper is a vital element, but of ten metals the toxic effect of which was tested for the survival of mussel and oyster embryos, copper is following mercury. Studying the regularities of copper content change during mussel ontogeny allows to determine both sanitary and hygienic risks of mussel product use during the mollusks cultivation in mariculture and the biogeochemical role in the formation of the chemical composition of the marine water near mussel farms. The purpose of this work is to determine the copper content in the organs and tissues of the mussels during seasonal course of mollusks ontogenesis, to analyze the degree of copper assimilation along the food path of mineral nutrition using the mathematical model and empirical data and to assess the influence of marine farms on the copper exchange processes in the coastal ecosystem. The mollusks were collected from the mussel farm located in the external roadstead of Sevastopol. Studying the copper content in the environment – mussel – biodeposition system, a method of atomic absorption spectroscopy with electrothermal atomization was used. A general model illustrating the process of copper exchange between the mussels and the water environment is presented. Equations for determining the degree of assimilation of metal from food (q) and the limiting coefficient of food accumulation of metal (Кп) are proposed based on the results of measurements of its concentrations in the mussels’ diet, soft tissue and their biodeposition without using radioactive trace elements. The values of the copper removal by the mussel farm were calculated. The role of cultivated mollusks in the heavy metals precipitation was shown.

Hearing the Crimean War

2019 ◽  
Keyword(s):  
Nineteenth Century ◽  
Sound Studies ◽  
The Black Sea ◽  
Crimean War ◽  
National Unity ◽  
Black Sea Region ◽  
Academic Fields ◽  
History Of ◽  
The Many

This book addresses the sounds of the Crimean War, along with the many ways nineteenth-century wartime is aurally constructed. It examines wide-ranging experiences of listeners in Britain, France, Turkey, Russia, Italy, Poland, Latvia, Daghestan, Chechnya, and Crimea, illustrating the close interplay between nineteenth-century geographies of empire and the modes by which wartime sound was archived and heard. This book covers topics including music in and around war zones, the mediation of wartime sound, the relationship between sound and violence, and the historiography of listening. Individual chapters concern sound in Leo Tolstoy’s wartime writings, and his place within cosmopolitan sensibilities; the role of the telegraph in constructing sonic imaginations in London and the Black Sea region; the absence of archives for the sounds of particular ethnic groups, and how songs preserve memories for both Crimean Tatars and Polish nationalists; the ways in which perceptions of voice rearranged the mental geographies of Baltic Russia, and undermined aspirations to national unity in Italy; Italian opera as a means of conditioning elite perceptions of Crimean battlefields; and historical frames through which to understand the diffusion of violent sounds amid everyday life. The volume engages the academic fields of musicology, ethnomusicology, history, literary studies, sound studies, and the history of the senses.

Role of suspended matter in controlling beryllium-7 (7Be) in the Black Sea surface layer

2021 ◽  
pp. 103513
Author(s):  
Dmitrii A. Kremenchutskii ◽  
Gennady F. Batrakov ◽  
Illarion I. Dovhyi ◽  
Yury A. Sapozhnikov
Keyword(s):  
Surface Layer ◽  
Black Sea ◽  
Suspended Matter ◽  
Sea Surface ◽  
The Black Sea

Elucidating the Origin of the Toxicity of Nano-CeO2 to Chlorella pyrenoidosa：the Role of Specific Surface Area and Chemical Composition

2021 ◽  
Author(s):  
Changjian Xie ◽  
Yuhui Ma ◽  
Peng Zhang ◽  
Junzhe Zhang ◽  
Xiaowei Li ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Aquatic Environment ◽  
Cerium Dioxide ◽  
Environmental Application ◽  
Ecotoxicological Effects

With the increasing environmental application and discharge of nano cerium dioxide (nano-CeO2), it is urgent to fully understand its ecotoxicological effects on the aquatic environment. This study for the first...

Research on Ethanol Production by Biological Fermentation of Potato Pulp

2013 ◽  
Vol 805-806 ◽  
pp. 281-285
Author(s):  
Zhong Xu
Keyword(s):  
Chemical Composition ◽  
Ethanol Production ◽  
Production Rate ◽  
Liquid Ratio ◽  
Fermentation Time ◽  
Potato Pulp ◽  
Fermentation Temperature ◽  
Ethanol Production Rate ◽  
Solid Liquid

Bioconversion of potato pulp to fuel ethanol, analysing the potato pulp chemical composition and determining the potato pulp in the role of microorganism produce ethanol under the best conditions is the major research. An analysis of the chemical composition of potato pulp showed that : the basic ingredients are Protein (9.72%), Starch (25.52%), Cellulose (17.90%). The effects of ethanol production rate of solid-liquid ratio, fermentation temperature, inoculumconcertration, fermentation time. The results showed that: the best conditions producting ethanol from potato pulp obtained by single factor experiments are: solid-liquid ratio: 1:15, fermentation temperature: 35°C, inoculumconcertration: 3mL, fermentation time: 20h. Under this occasion, the ethanol production rate was 0.183mL·g-1.

The role of chemical composition in the synthesis of Ca/K-1144 iron based superconductors

2021 ◽  
pp. 159202
Author(s):  
Andrea Masi ◽  
Achille Angrisani Armenio ◽  
Giuseppe Celentano ◽  
Aurelio La Barbera ◽  
Alessandro Rufoloni ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Iron Based Superconductors ◽  
Iron Based

Sb-V-Ox catalysts—Role of chemical composition of MCM-41 supports in physicochemical properties

2009 ◽  
Vol 142 (3-4) ◽  
pp. 175-180 ◽  
Author(s):  
H. Golinska ◽  
P. Decyk ◽  
M. Ziolek ◽  
J. Kujawa ◽  
E. Filipek
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
Mcm 41

Georgian Historians and the Ideological Confrontation Between East and West

2021 ◽  
Vol 30 (1) ◽  
pp. 153-164
Author(s):  
George Gotsiridze
Keyword(s):  
Soviet Union ◽  
Cultural Values ◽  
Black Sea ◽  
The Black Sea ◽  
Black Sea Region ◽  
The Soviet Union ◽  
Long Time ◽  
Science And Culture ◽  
East And West

The work, on the one hand, highlights the mission of Europe, as an importer of knowledge, which has for centuries been the center of gravity for the whole world, and, on the other hand, the role of the Black Sea Region, as an important part of the Great Silk Road, which had also for a long time been promoting the process of rap-prochement and exchange of cultural values between East and West peoples, until it became the ‘inner lake’ of the Ottoman Empire, and today it reverts the function of rapproching and connecting civilizations. The article shows the importance of the Black Sea countries in maintaining overall European stability and in this context the role of historical science. On the backdrop of the ideological confrontation between Georgian historians being inside and outside the Iron Curtain, which began with the foundation of the Soviet Union, the research sheds light on the merit of the Georgian scholars-in-exile for both popularization of the Georgian culture and science in Eu-rope and for importing advanced (European) scientific knowledge to Georgia. Ex-change of knowledge in science and culture between the Black Sea region and Europe will enrich and complete each other through impact and each of them will have unique, inimitative features.

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