scholarly journals Radionuclides Content in Tissues and Organs of Pumpkinseed Lepomis gibbosus (Linnaeus, 1758) from the Zaporizhzhia (Dnipro) Reservoir

2020 ◽  
Vol 79 ◽  
pp. 16-22
Author(s):  
Oleg M. Marenkov ◽  
Oleh S. Nesterenko
Keyword(s):  
Natural Radionuclides ◽  
Food Product ◽  
Lepomis Gibbosus ◽  
Radiation Load ◽  
Research Results ◽  
Radionuclide Content ◽  
Permissible Levels ◽  
Sexually Mature

The article presents the results of studies on the content of artificial (137Cs, 90Sr) and natural radionuclides (226Ra, 232Th, 40K) in tissues and organs of various individuals of pumpkinseed Lepomisgibbosus (Linnaeus, 1758) from the Zaporizhzhia (Dnipro) reservoir. It has been revealed that in the bones of sexually mature pumpkinseed females, the content of radionuclides 137Cs and90Sr is 24.7% and 28.6% less, respectively, than in the bones of males. Summing up the materials of radioecological studies of 2017–2018, the following sequence of tissues and organs of the pumpkinseed by the ability to accumulate radionuclides was obtained: bone> muscle> scales> gills. Research results can be useful for further study on the fish radiation load in the basins of the Dnipro River and during monitoring radioecological research. It was determined that the content of radionuclides in the pumpkinseed muscles did not exceed the permissible levels of radionuclide content for fish as a food product (permissible levels of radionuclide content for 137Cs – 150 Bq/kg, 90Sr – 35 Bq/kg).

Basic principles for assessing the safety of fish products from the ponds exposed to the influence of nuclear fuel cycle enterprises

2019 ◽  
pp. 106-114
Author(s):  
A. V. Trapeznikov ◽  
V. N. Trapeznikova ◽  
A. V. Korzhavin ◽  
V. N. Nikolkin ◽  
A. P. Plataev
Keyword(s):  
Fuel Cycle ◽  
Specific Activity ◽  
River System ◽  
Food Product ◽  
Human Consumption ◽  
Basic Principles ◽  
Fish Products ◽  
Permissible Levels ◽  
Irtysh River

Relevance. In connection with the development of nuclear energy, many aquatic ecosystems have been exposed to radioactive substances. Fish, as an element of biota, is capable to accumulate radionuclides. However, fish is a traditional food. The control of the technogenic radionuclides accumulation level in the ichthyofauna is an important link in ensuring human security.Intention. To analyze the long-term data on the content of long-lived technogenic radionuclides 90Sr and 137Cs in the ichthyofauna of the Ob-Irtysh river system for the period from 2004 to 2016 and Beloyarsky pond for the period from 1977 to 2018.Methodology. Fish as a food product was assessed according to two criteria: a) permissible levels of specific activity of radionuclides (SanPiN 2.3.2.1078-01); b) using the indicator of conformity B and the uncertainty of its definition В (GOST 32161-2013 and GOST 32163-2013).Results and Discussion. Fish of all species that live in the river Tetcha, is not suitable for food use according to the criteria of SanPiN 2.3.2.1078-01, GOST 32161-2013 and GOST 32163-2013. The fish of the Ob-Irtysh river system, the habitat of which is located outside the Tetcha, meets the requirements for fish products. In the period from 1977 to 1989 in the Beloyarsk pond the accumulations of technogenic radionuclides in fish in quantities exceeding sanitary and hygienic standards were possible. Currently, the fish of the Beloyarsky pond fully complies with the sanitary and hygienic requirements for the radiation factor and is safe for human consumption.Conclusion. In the ponds exposed to the atomic energy enterprises, it is necessary to continuously monitor the content of long-lived technogenic radionuclides in fish and assess their amount in accordance with the requirements of SanPiN 2.3.2.1078-01 and using the conformity indicator В and the uncertainty of its determination В. 

scholarly journals Consumer Involvement in the Purchasing Process: Consciousness of the Choice

2019 ◽  
Vol 16 (1) ◽  
pp. 126-136
Author(s):  
Laima Jeseviciute-Ufartiene
Keyword(s):  
Consumer Behaviour ◽  
Food Product ◽  
Consumer Involvement ◽  
Research Purpose ◽  
Future Research ◽  
Research Results ◽  
Food Purchase ◽  
Purchase Process ◽  
Practical Implications ◽  
Purchasing Process

Abstract Research purpose. Consumer is becoming demanded one in the purchasing process. Thus, consumer behaviour analyses thinking about his or her involvement in the purchase process could be a solution for marketers. This article concentrates on the consumer’s choice of food products in the purchase process because the author is interested to clarify the connection amongst choice, purchase and wasting of food. The research purpose is to evaluate the consumer’s consciousness in choosing food product in the purchase process. Design/Methodology/Approach. Quantitative method using questionnaire was applied to 643 respondents whilst implementing formulated aim. Cronbach’s alpha analyses of 35 items (0.870) showed reliability of the research. Findings. The research results indicated that consumer in the food purchase process is low conscious because he or she does not understand that he or she is buying more than what he or she needs and thus some of his or her purchase becomes waste. Consumer’s consciousness could be seen in the consumer’s lifestyle such as preferences for homemade food. Originality/Value/Practical implications. The research results could be used in practice and science. Food-producing companies might use some research results making their packaging solutions. The research results could give incites for scientists for future research.

scholarly journals The Peculiarities of Remodelling Muscle Tissue of Rats Under the Vibration Influence

PRILOZI ◽  
2019 ◽  
Vol 40 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Nazar M. Kostyshyn ◽  
Liybov P. Kostyshyn ◽  
Marta I. Servetnyk ◽  
Mechyslav R. Grzegotsky
Keyword(s):  
Muscle Tissue ◽  
Vertical Vibration ◽  
Male Rats ◽  
Muscle Fibres ◽  
Transverse Strain ◽  
Vibration Acceleration ◽  
Tissue Remodelling ◽  
Acceleration Level ◽  
Permissible Levels ◽  
Sexually Mature

Abstract Study of the influence of vibration oscillations of different frequency, amplitude and vibration acceleration on the structural and functional state and mechanisms of muscle tissue remodelling. An experimental study was conducted on sexually mature male rats. The rats of the four experimental groups were subjected to vertical vibration oscillations of 15, 25, 50 and 75 Hz, respectively. It has been established that pathological changes in muscle tissue in the form of different variants of damage and remodelling tend to increase, which correlates with the frequency of vibration, amplitude and vibration acceleration level, as in the 2nd group, where the maximum permissible vibration levels did not exceed the established allowable norms, and in other groups of animals, where the permissible levels of total vibration were exceeded. By increasing vibration acceleration for more than 1.25 m/s2 (0.13 g, frequency more than 25 Hz and amplitude of 2 mm), severe damages are observed in the form of alterative changes of muscle fibres with the disappearance of transverse strain, homogenization of sarcoplasm, fragmentation with dissociation fibres on separate beams, partial and subtotal myocytolysis, and necrosis of separate fibres. Inflammation is rapidly increasing with the increase in the frequency of vibration and the level of vibration acceleration for more than 5.0 m/s2 (0.51 g).

scholarly journals Environmental radioactivity in southern Serbia at locations where depleted uranium was used

2014 ◽  
Vol 65 (2) ◽  
pp. 189-197 ◽  
Author(s):  
Nataša B. Sarap ◽  
Marija M. Janković ◽  
Dragana J. Todorović ◽  
Jelena D. Nikolić ◽  
Milojko S. Kovačević
Keyword(s):  
Natural Radionuclides ◽  
Hazard Index ◽  
Depleted Uranium ◽  
Radium Equivalent Activity ◽  
Gross Alpha ◽  
External Hazard Index ◽  
Radionuclide Content ◽  
Radium Equivalent ◽  
Radioactivity Monitoring

AbstractIn the 1999 bombing of the Federal Republic of Yugoslavia, NATO forces used ammunition containing depleted uranium. The cleaning of depleted uranium that followed was performed in southern Serbia by the Vinča Institute of Nuclear Sciences between 2002 and 2007 at the locations of Pljačkovica, Borovac, Bratoselce, and Reljan. This paper presents detailed results of radioactivity monitoring four years after cleaning (2011), which included the determination of gamma emitters in soil, water, and plant samples, as well as gross alpha and beta activities in water samples. The gamma spectrometry results showed the presence of natural radionuclides 226Ra, 232Th, 40K, 235U, 238U, and the produced radionuclide 137Cs (from the Chernobyl accident). In order to evaluate the radiological hazard from soil, the radium equivalent activity, the gamma dose rate, the external hazard index, and the annual effective dose were calculated. Considering that a significant number of people inhabit the studied locations, the periodical monitoring of radionuclide content is vital.

scholarly journals Assessment of the Radiation and Health Physics Situation in the Area of Ship Repair Enterprises in Kamchatka Krai

2021 ◽  
pp. 24-28
Author(s):  
D.V. Isaev ◽  
◽  
N.K. Shandala ◽  
V.G. Starinskiy ◽  
A.V. Titov ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Sea Water ◽  
Specific Activity ◽  
Natural Radionuclides ◽  
Health Physics ◽  
Nuclear Power Installation ◽  
Equivalent Dose Rate ◽  
Radionuclide Content ◽  
Territorial Unit ◽  
Ship Repair

The objectives of the study are to examine the radiation and health physics situation in the area of ship repair enterprises servicing ships with nuclear power installation; to assess its possible impact on the environment and the population. Materials and research methods. The study of radiation and health physics situation on the territory was conducted by walking gamma survey using portable gamma spectrometric complexes MKS-01A "Multirad-gamma" and MKS-AT6101C. Gamma-spectrometric and radiochemical methods of analysis were used to determine the specific activity of man-made and natural radionuclides in environmental samples. Results of the study and their analysis. Practical medical and hygienic measures to study the radiation and health physics situation were carried out in 2019. It was found that the ambient equivalent dose rate in the areas of ship repair enterprises is at the level of regional values and does not exceed 0.12 μSv/h. Radionuclide specific activity in the soil of the surveyed areas does not exceed 4.5 Bq/kg — for 90Sr and 12 Bq/kg — for 137Cs, which does not exceed the established norms for unrestricted use of solid materials. Radionuclide content in the sea water samples taken in the area of closed administrative territorial unit Krasheninnikov Bay does not exceed on average: for 137Cs — 7 mBq/L, for 90Sr — 2.1 mBq/L. When comparing the results obtained with the official data on the radionuclide content in the water of Avacha Bay (90Sr up to 2.08 mBq/L at the annual average of 1.14 mBq/L), we may state that they are at the same level as the regional ones. Radionuclide content in bottom sediment samples varies within the following limits: for 137Cs — from 0.14 to 3 Bq/kg, for 90Sr — from 0.11 to 1.5 Bq/kg and is similar to the general values for soil samples. Thus, the radiation and health physics characteristics of the study area vary little and remain practically at the level of the results of studies conducted in 2014-2015. The content of man-made radionuclides in the samples of environmental objects is at the level of average values typical for the region. Potentially radiation-hazardous works carried out in 2019 at enterprises of closed administrative territorial unit Vilyuchinsk had no reliable radiation impact on the environment and population.

scholarly journals THE POSSIBILITY OF DETERMINING THE DURATION OF INJURY BASED ON CHANGES IN THE HISTOMORPHOMETRIC CHARACTERISTICS OF THE THYMUS IN THE EXPERIMENT

2021 ◽  
Author(s):  
Airat A. Khalikov ◽  
Evgeniy M. Kildyushov ◽  
Kirill O. Kuznetsov ◽  
Dmitriy S. Komlev ◽  
Gulnaz R. Rahmatullina
Keyword(s):  
Kinetic Energy ◽  
Microscopic Examination ◽  
Lymphoid Tissue ◽  
Mechanical Damage ◽  
Mechanical Trauma ◽  
Research Results ◽  
Forensic Practice ◽  
The Moment ◽  
And Control ◽  
Sexually Mature

Background. It is known that lymphoid tissue is the first to react to stress, which is manifested by characteristic morphological manifestations, on the basis of which it is possible to study the duration of damage. Aims: study in the experiment the dynamics of changes in the histomorphometric characteristics of the rat thymus in the process of regeneration of the musculocutaneous tissue during mechanical trauma of the thigh. 84 sexually mature rats were studied, which were divided into 2 groups (experiment and control), and then into 4 subgroups, depending on the time elapsed since the moment of injury (1st, 3rd, 15th and 25th days). Mechanical damage was simulated using a setup that transferred kinetic energy to tissues comparable to that of a 5.6 mm rifle bullet. The animals were removed from the experiment by decapitation, the thymus was removed and subjected to microscopic examination. In arbitrary units, the total area of ​​the lobules, the area of ​​the cortical and cerebral zones was determined. Our research results indicate the phasing of changes in the histomorphometric characteristics of the thymus structure, which correspond to the phases of the course of the wound process, which can be used in forensic practice to determine the duration of the injury.

scholarly journals CAESIUM-137 AND STRONTIUM-90 CONCENTRATION IN PINE FOREST MEAT IN DIFFERENT ECOLOGICAL ZONES OF THE REPUBLIC OF SAKHA (YAKUTIA)

2019 ◽  
pp. 79-84
Author(s):  
E. M. Petrova ◽  
N. I. Alekseeva
Keyword(s):  
Specific Activity ◽  
Food Product ◽  
The Body ◽  
Black Grouse ◽  
Ecological Zones ◽  
Wild Game ◽  
Game Birds ◽  
Cesium 137 ◽  
Permissible Levels ◽  
The Republic

The article discussesthe current problem of food quality control, the content ofstrontium-90 and cesium - 137 in the body of wild game birds-wild game inhabiting the territory of the Republic of Sakha (Yakutia). The object for research were carcasses of wild game 3 species: black grouse; partridge; grouse. Radiation safety of wild game as a food product was determined by its compliance with permissible levels of specific activity of radionuclides, in particular 137Cs and 90Sr. These indicators are regulated by TR CU 021/2011 “on food safety”. According to the long-term (2013-2017) results of our studies 137Cs and 90Sr in carcasses of wild game, Northern, Central, Vilyuisk and southern ecological zones of the Republic of Sakha (Yakutia) was not found to exceed the permissible concentration. As a result of our research, the following results were obtained: the content of 137Cs and 90Sr in grouse carcasses: southern - 70.54±0.71 and 26.43±2.54; Central-64.81±0.18 and 20.89±1.95; Vilyuiskaya - 73.12±0.01 and 28.48±1.18. Black grouse does not live in the Northern ecological zone. The results of the study of partridges are as follows: South-69.04±2.95 and 28.17±0.05; Central - 58,69±2,18 19,87 and±0,39; Vilyui - 70,84±1.55 and 27,87±0,04; North - 28,17±0.05 and of 10.83±0,50. In the study of grouse is established: the content of radionuclides in the southern zone - 71,24±1,95; Central was 60.05±0.01 and of 21.11±1,95; Vilyui - 71,11±0.55 and of 11.47±0,32. According to the results of our studies, the data of exceeding the maximum concentration of 137Cs and 90Sr in the carcasses of wild game in all ecological zones of Yakutia were not established.

scholarly journals THE ENVIRONMENTAL IMPACT OF RADIONUCLIDES FROM SOIL AND CLAY MATERIAL FOUND IN "ZBEGOVI" DEPOSIT IN DONJE CRNILJEVO

2018 ◽  
pp. 045
Author(s):  
Sreten Ilić ◽  
Tatjana Golubović ◽  
Tatjana Marković ◽  
Nataša Pajić
Keyword(s):  
Environmental Impact ◽  
Relative Efficiency ◽  
Hpge Detector ◽  
Negative Impact ◽  
Natural Radionuclides ◽  
Spectrometric Method ◽  
Clay Material ◽  
Clay Deposit ◽  
Radionuclide Content ◽  
Surrounding Soil

The paper presents the results of testing radionuclide content in soil and clay samples on the surface mine "Zbegovi" in Donje Crniljevo, Serbia. The results of the study show that the activity of clay samples and surrounding soil derives mainly from natural radionuclides: 232Th, 238U and 40K. The radioactivity of the samples was determined by the gamma spectrometric method using HPGe detector with relative efficiency of 56.2%. The obtained results show that the tested samples can be used as material for brick and ceramic products, cosmetics as well as the fact that the tested clay deposit does not have a negative impact on humans, plants and animals.

scholarly journals Nutrition Physiology of Juveniles Individuals of Pumpkinseed Lepomis gibbosus (Linnaeus, 1758) from the Samara Bay (Ukraine)

2021 ◽  
Vol 83 ◽  
pp. 15-21
Author(s):  
O.S. Nesterenko ◽  
Oleg M. Marenkov ◽  
Ye.S. Pylypenko
Keyword(s):  
Intestinal Epithelium ◽  
Digestive System ◽  
Scientific Research ◽  
Goblet Cells ◽  
Morphometric Parameters ◽  
Fish Nutrition ◽  
Lepomis Gibbosus ◽  
Histological Structure ◽  
Research Results ◽  
June July

The article presents the results of studies physiology of nutrition of juveniles individuals of pumpkinseed Lepomis gibbosus (Linnaeus, 1758) from the Zaporizhzhia (Dnipro) reservoir. histological structure, morphometric parameters of digestive system and nutrition biology were investigated. The material for work were collected during scientific research in June-July 2016–2017. The ichthyological sampling was carried out in the Samara Bay of the Zaporizhzhia (Dnipro) reservoir. Researches of structure of digestive system were conducted using histological methods, researches of nutrition were conducted using ichthyological and hydrobiological methods The height of the intestinal epithelium of the pumpkinseed`s juveniles varies from 15.5 microns to 51.9 microns and on average is 32.59 ± 9.03 microns, the area of secretory goblet cells of the intestine reaches 198.61 ± 36.55 μm2. It was revealed that the pumkinseed’s juveniles only feed on phytoplankton. Research results can be useful for further study on the fish nutrition, especially sexual matured. Also, nutrition studies can help to find biomeliorative methods to combat the pumpkinseed, because the species is in competition with industrially valuable species of fish for fodder.

scholarly journals HELMINTHES OF CATFISH (SILURUS GLANIS L.) IN WATER BODIES OF THE MIDDLE REACHES OF THE SYRDARYA RIVER

2021 ◽  
pp. 33-37
Author(s):  
Abduganiyev
Keyword(s):  
Species Composition ◽  
Infection Rate ◽  
Water Bodies ◽  
Larval Form ◽  
Research Results ◽  
Silurus Glanis ◽  
Mature Form ◽  
Sexually Mature ◽  
Intensity Of Invasion ◽  
Artificial Reservoirs

Study of the species composition of catfish helminths in water bodies of the middle reaches of the Syrdarya river. The material was collected in 2019–2021 in natural and artificial reservoirs of the middle reaches of the Syrdarya river. We examined 216 specimens of the catfish by methods of complete parasitological dissection proposed by V.A. Dogel (1933), A.P. Markevich (1950) and I.E. Bykhovskaya-Pavlovskaya (1952). The helminths found were undergone laboratory inspection according to generally accepted methods of I.E. Bykhovskaya-Pavlovskaya (1952), A.A. Shigin (1986) and O.N. Bauer (1987). As the research results show, the prevalence in catfish was 31.5% with the intensity of invasion 1–70 specimens. 29 species of helminths were recorded in the catfish: 7 species of cestodes, 10 species of trematodes, 9 species of nematodes, and 3 species of proboscis worms, which belong to 27 genera, 19 families, 11 orders and 4 classes. Events of mono- and associative invasions have been reported. From 29 species of helminths found, 17 species were found in the larval form, and 12 species in the sexually mature form. In natural and artificial reservoirs of the Syrdarya region of Uzbekistan, the catfish is infected with 29 species of helminths. The total infection rate in fish is 31.5%. This parameter varies depending on the season of the year

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