Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-87-100
The effect of heavy metals: cadmium, lead, nickel (in concentrations of 10 and 20 μg/l), zinc and iron (50 and 100 μg/l) on the dynamics of population, cell morphology and photosynthetic apparatus (according to the content of photosynthetic pigments – chlorophyll a and carotenoids, chloroplast fluorescence) of Alexandrium affine dinophyte algae during 7 days. It was shown that cadmium had the most depressing effect on the algae: the number of cells decreased and did not recover by the end of the experiment. There was also a decrease in the content of photosynthetic pigments. The addition of lead led to a slight increase in the number of cells, while the content of photosynthetic pigments increased. The presence of nickel, iron andzinc in the medium provoked an increase in the number of cells, but the content of chlorophyll a and carotenoids decreased. All metals led to changes in chloroplast fluorescence and morphological disorders of cells.
{"title":"Influence of heavy metals on population dynamics and photosynthetic apparatus of Alexandrium affine (Dinophyta)","authors":"","doi":"10.17217/2079-0333-2023-63-87-100","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-87-100","url":null,"abstract":"The effect of heavy metals: cadmium, lead, nickel (in concentrations of 10 and 20 μg/l), zinc and iron (50 and 100 μg/l) on the dynamics of population, cell morphology and photosynthetic apparatus (according to the content of photosynthetic pigments – chlorophyll a and carotenoids, chloroplast fluorescence) of Alexandrium affine dinophyte algae during 7 days. It was shown that cadmium had the most depressing effect on the algae: the number of cells decreased and did not recover by the end of the experiment. There was also a decrease in the content of photosynthetic pigments. The addition of lead led to a slight increase in the number of cells, while the content of photosynthetic pigments increased. The presence of nickel, iron andzinc in the medium provoked an increase in the number of cells, but the content of chlorophyll a and carotenoids decreased. All metals led to changes in chloroplast fluorescence and morphological disorders of cells.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122838402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-101-112
V. Kryukov, S. Zhuchkov, T. N. Lazareva, O. Kireeva, N. N. Popovicheva
The level of technogenic non-ionizing electromagnetic radiations of various frequencies constantly grows in the biosphere. Therefore, studies of these radiations influence on biological organisms are very actual. The purpose of the work was to study the consequences of prolonged exposure to EHF radiation on the stability of the genome of anurans. Larvae of the green toad (Bufo viridis) were subjected to EMR at four different EHF frequencies (34.52, 34.67, 34.79, and 35.04 GHz with an energy flux density of 4.88, 5.33, 4.94, and 3.76 mW/cm2, respectively) for 120 hours. After irradiation the frequencies of micronuclei (MN) and nuclear anomalies (NA) in peripheral blood erythrocytes of tadpoles were studied. EHF radiation with a frequency of 34.52 GHz induced a small and statistically insignificant increase in the frequency of MN and NA. Exposure to EHF radiation at frequencies of 34.67, 34.79, and 35.04 GHz caused a statistically significant increase in the frequency of MN and NA in tadpole erythrocytes. A statistically significant increase of the frequency of MN and NA in anuran larvae erythrocytes after exposure to EHF radiation proves a certain danger of an increasing level of EMR in the biosphere, as well as the need for further studies of the effect of non-ionizing radiation on the genomes of lower vertebrates.
{"title":"Influence of ehf radiation on frequency of micronuclei and nuclear anomalies in amphibian larva erythrocytes","authors":"V. Kryukov, S. Zhuchkov, T. N. Lazareva, O. Kireeva, N. N. Popovicheva","doi":"10.17217/2079-0333-2023-63-101-112","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-101-112","url":null,"abstract":"The level of technogenic non-ionizing electromagnetic radiations of various frequencies constantly grows in the biosphere. Therefore, studies of these radiations influence on biological organisms are very actual. The purpose of the work was to study the consequences of prolonged exposure to EHF radiation on the stability of the genome of anurans. Larvae of the green toad (Bufo viridis) were subjected to EMR at four different EHF frequencies (34.52, 34.67, 34.79, and 35.04 GHz with an energy flux density of 4.88, 5.33, 4.94, and 3.76 mW/cm2, respectively) for 120 hours. After irradiation the frequencies of micronuclei (MN) and nuclear anomalies (NA) in peripheral blood erythrocytes of tadpoles were studied. EHF radiation with a frequency of 34.52 GHz induced a small and statistically insignificant increase in the frequency of MN and NA. Exposure to EHF radiation at frequencies of 34.67, 34.79, and 35.04 GHz caused a statistically significant increase in the frequency of MN and NA in tadpole erythrocytes. A statistically significant increase of the frequency of MN and NA in anuran larvae erythrocytes after exposure to EHF radiation proves a certain danger of an increasing level of EMR in the biosphere, as well as the need for further studies of the effect of non-ionizing radiation on the genomes of lower vertebrates.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115170833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-22-44
The results of monitoring of the benthic communities’ state during two years after the ecological catastrophe caused by an outbreak of planktonic microalgae off the coast of Kamchatka in autumn 2020 were presented. The consequences of this phenomenon led to the mass extinction of bottom organisms. As a result, in the zone of the upper sublittoral, a strong depletion of the benthic fauna occurred, not only many species, but also entire groups of animals fell out of its composition: most of the sponges and about a half of species of sea anemones, mollusks, echinoderms, ascidians have disappeared. However, the quantity of some groups of Crustacea has increased significantly.
{"title":"Qualitative assessment of algae harmful bloom impact in autumn 2020 off the coast of South-Eastern Kamchatka (North-West Pacific) on shallow-water benthic communities","authors":"","doi":"10.17217/2079-0333-2023-63-22-44","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-22-44","url":null,"abstract":"The results of monitoring of the benthic communities’ state during two years after the ecological catastrophe caused by an outbreak of planktonic microalgae off the coast of Kamchatka in autumn 2020 were presented. The consequences of this phenomenon led to the mass extinction of bottom organisms. As a result, in the zone of the upper sublittoral, a strong depletion of the benthic fauna occurred, not only many species, but also entire groups of animals fell out of its composition: most of the sponges and about a half of species of sea anemones, mollusks, echinoderms, ascidians have disappeared. However, the quantity of some groups of Crustacea has increased significantly.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127147080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-6-21
In this work, the influence of various concentrations (from 2 to 10% of the total mass) of grape seed flour (GSF) on the quality characteristics of shrimp pate with the addition of herbal ingredients for the nutrition of the elderly was studied in order to establish its acceptable amount in the recipe. The results showed that introduction of GSF in the product, the content of protein, fat, carbohydrates and ash increased, acidity increased, and the moisture content decreased, changed the color of the product from light yellow to dark brown, increases the penetration force and the hardness, viscosity, adhesiveness, gumminess and chewiness and reduces cohesiveness. The organoleptic evaluation showed that the addition of GSF in an amount of 5% of the total mass and above reduces the quality level of the product. The practical possibility of using GSF in the recipe of pate in an amount of less than 5% of the total mass for the preparation of a product with increased nutritional value and with the preservation of its consumer characteristics has been established.
{"title":"The effects of grape seed flour on the quality of shrimp pate with the addition of herbal ingredients for the nutrition of the elderly","authors":"","doi":"10.17217/2079-0333-2023-63-6-21","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-6-21","url":null,"abstract":"In this work, the influence of various concentrations (from 2 to 10% of the total mass) of grape seed flour (GSF) on the quality characteristics of shrimp pate with the addition of herbal ingredients for the nutrition of the elderly was studied in order to establish its acceptable amount in the recipe. The results showed that introduction of GSF in the product, the content of protein, fat, carbohydrates and ash increased, acidity increased, and the moisture content decreased, changed the color of the product from light yellow to dark brown, increases the penetration force and the hardness, viscosity, adhesiveness, gumminess and chewiness and reduces cohesiveness. The organoleptic evaluation showed that the addition of GSF in an amount of 5% of the total mass and above reduces the quality level of the product. The practical possibility of using GSF in the recipe of pate in an amount of less than 5% of the total mass for the preparation of a product with increased nutritional value and with the preservation of its consumer characteristics has been established.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"14 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129204849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-78-86
S. G. Korostelev
It is stated that January there is the most intensive blue crab fishing period in the Shelikhov Bay during the year. At the same time, the catch of males of commercial size per day was 13.474 tons or 7600 pcs. However, this value does not reflect the real possibility of catching per day, since it is limited to the possibility of raw material processing per day (15–16 tons). Information on the size-weight composition of catches and the biological state of crabs is given, as well as the species composition of the by-catch of other species of fish and invertebrates in trap fishing is analyzed.
{"title":"Monitoring of the blue crab fishery (Paralithodes platypus Brandt) in the throat of Shelikhov Bay in January 2018","authors":"S. G. Korostelev","doi":"10.17217/2079-0333-2023-63-78-86","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-78-86","url":null,"abstract":"It is stated that January there is the most intensive blue crab fishing period in the Shelikhov Bay during the year. At the same time, the catch of males of commercial size per day was 13.474 tons or 7600 pcs. However, this value does not reflect the real possibility of catching per day, since it is limited to the possibility of raw material processing per day (15–16 tons). Information on the size-weight composition of catches and the biological state of crabs is given, as well as the species composition of the by-catch of other species of fish and invertebrates in trap fishing is analyzed.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131899572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-66-77
Yuriy P. Dyakov, A. Bugaev
The dynamics of commercial catch of biological resources during the second decade (2011–2020) of the 21st century in sea waters adjacent to the Kamchatka Territory was characterized in the article. The level of such catch is estimated in comparison with the previous decade; a comparative assessment of the operated species is made. The structure conformity of the actual biological resources catching with the predicted one is considered. It was established that according to the degree of predicted catch development herring and salmon were in the lead, crabs were in third place and pollock was the fourth one. A significant poor catch was observed in relation to other important fishery objects and the most pronounced was for mollusks.
{"title":"On commercial exploitation of biological resources in waters of Kamchatka Territory","authors":"Yuriy P. Dyakov, A. Bugaev","doi":"10.17217/2079-0333-2023-63-66-77","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-66-77","url":null,"abstract":"The dynamics of commercial catch of biological resources during the second decade (2011–2020) of the 21st century in sea waters adjacent to the Kamchatka Territory was characterized in the article. The level of such catch is estimated in comparison with the previous decade; a comparative assessment of the operated species is made. The structure conformity of the actual biological resources catching with the predicted one is considered. It was established that according to the degree of predicted catch development herring and salmon were in the lead, crabs were in third place and pollock was the fourth one. A significant poor catch was observed in relation to other important fishery objects and the most pronounced was for mollusks.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123161857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-23DOI: 10.17217/2079-0333-2023-63-45-65
The nutritional relations between fish larvae and zooplankton organisms in marine waters off Kamchatka Peninsula based on the ichthyoplankton samples as well as changes in the diet of fish larvae in Kamchatka waters are considered. In spring, the most suitable food organisms for small fish larvae are polychaeta larvae, Cirripedia and Calanoida nauplii, small forms of copepods, mollusks, juveniles of amphipods. In early summer larvae of Polychaeta, nauplii of Cirripedia and Calanoida, small forms of Cladocera and Copepoda are also available. The main forage organisms for larger larvae are furcilia and calyptopis of euphausiids, small larvae of Decapoda. In the second half of summer, larger forms, mainly of the same organisms, are available for late larvae of many fishes. The relationship between the distribution of marine fish larvae and zooplankton organisms is shown. A list of available food organisms for fish larvae during pelagic development has been compiled. Three main trophic groups have been proposed.
{"title":"Nutritional relationships between fish pelagic larvae and planktonic organisms in adjacent Kamchatka waters","authors":"","doi":"10.17217/2079-0333-2023-63-45-65","DOIUrl":"https://doi.org/10.17217/2079-0333-2023-63-45-65","url":null,"abstract":"The nutritional relations between fish larvae and zooplankton organisms in marine waters off Kamchatka Peninsula based on the ichthyoplankton samples as well as changes in the diet of fish larvae in Kamchatka waters are considered. In spring, the most suitable food organisms for small fish larvae are polychaeta larvae, Cirripedia and Calanoida nauplii, small forms of copepods, mollusks, juveniles of amphipods. In early summer larvae of Polychaeta, nauplii of Cirripedia and Calanoida, small forms of Cladocera and Copepoda are also available. The main forage organisms for larger larvae are furcilia and calyptopis of euphausiids, small larvae of Decapoda. In the second half of summer, larger forms, mainly of the same organisms, are available for late larvae of many fishes. The relationship between the distribution of marine fish larvae and zooplankton organisms is shown. A list of available food organisms for fish larvae during pelagic development has been compiled. Three main trophic groups have been proposed.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116432899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.17217/2079-0333-2022-59-6-14
V. Sivokon’
On February 3, 2022, as part of the SpaceX program, the next Falcon 9 carrier with Starlink satellites was launched. The launch was unsuccessful, which led to the loss of 40 out of 49 satellites. According to SpaceX experts, the cause of this event was an increase in the density of the atmosphere in the intermediate orbit, due to a magnetic storm, followed by deceleration and loss of satellites. Based on the analysis of the geomagnetic situation, the article shows that it is not enough to limit ourselves to consider only a possible change in the density of the atmosphere as the cause of the catastrophe. Most likely, the reason is complex and involves, among other issues, a failure in the operation of the radio-electronic equipment of the satellites due to induced currents and their electrification.
{"title":"GEOPHYSICAL ASPECT OF A CATASTROPHIC LAUNCH OF STARLINK SATELLITES","authors":"V. Sivokon’","doi":"10.17217/2079-0333-2022-59-6-14","DOIUrl":"https://doi.org/10.17217/2079-0333-2022-59-6-14","url":null,"abstract":"On February 3, 2022, as part of the SpaceX program, the next Falcon 9 carrier with Starlink satellites was launched. The launch was unsuccessful, which led to the loss of 40 out of 49 satellites. According to SpaceX experts, the cause of this event was an increase in the density of the atmosphere in the intermediate orbit, due to a magnetic storm, followed by deceleration and loss of satellites. Based on the analysis of the geomagnetic situation, the article shows that it is not enough to limit ourselves to consider only a possible change in the density of the atmosphere as the cause of the catastrophe. Most likely, the reason is complex and involves, among other issues, a failure in the operation of the radio-electronic equipment of the satellites due to induced currents and their electrification.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"324 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115449898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.17217/2079-0333-2022-62-117-125
M. V. Ermak, N. V. Matsishina, P. Fisenko
The 28-spotted potato ladybird Henosepilachna vigintioctomaculata is an endemic pest of field crops in the Russian Far East. The phenetic structure research of this phytophage population can help to monitor the processes occurring in ecosystems, to study the resilience to pesticides and to resistant varieties, as well as to make a significant contribution to the study of the endemic fauna of the Far East. The elytra pattern to study the polymorphism and structure of a potato ladybird population was analyzed. The size and shape of spots, the intensity of color, the position of spots on the elytra, the presence of connected spots were taken into account. As the result, nine phenoforms were identified. The phenoform A2 prevailed (47.81%). The phenoforms A1 and A6 were also frequently discovered. The phenoform A9 had the most seldom occurrence (1.82%). It was stated that morphotypes differ by the linear dimension of elytra spots. The form A2 was characterized by the largest spots. The size of the patterns varied from (104.98 ± 0.071) to (297.01 ± 0.065)μ. The form A1 had the smallest spots.
{"title":"PHENOTYPIC DIVERSITY OF POTATO LADYBIRD POPULATION","authors":"M. V. Ermak, N. V. Matsishina, P. Fisenko","doi":"10.17217/2079-0333-2022-62-117-125","DOIUrl":"https://doi.org/10.17217/2079-0333-2022-62-117-125","url":null,"abstract":"The 28-spotted potato ladybird Henosepilachna vigintioctomaculata is an endemic pest of field crops in the Russian Far East. The phenetic structure research of this phytophage population can help to monitor the processes occurring in ecosystems, to study the resilience to pesticides and to resistant varieties, as well as to make a significant contribution to the study of the endemic fauna of the Far East. The elytra pattern to study the polymorphism and structure of a potato ladybird population was analyzed. The size and shape of spots, the intensity of color, the position of spots on the elytra, the presence of connected spots were taken into account. As the result, nine phenoforms were identified. The phenoform A2 prevailed (47.81%). The phenoforms A1 and A6 were also frequently discovered. The phenoform A9 had the most seldom occurrence (1.82%). It was stated that morphotypes differ by the linear dimension of elytra spots. The form A2 was characterized by the largest spots. The size of the patterns varied from (104.98 ± 0.071) to (297.01 ± 0.065)μ. The form A1 had the smallest spots.","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116861622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.17217/2079-0333-2021-57-70-81
S.V. Yuodvirshis, V. Starikov
{"title":"SOME ASPECTS OF THE ECOLOGY OF SMALL MAMMALS IN URBAN AREAS DURING THE SNOWY SEASON","authors":"S.V. Yuodvirshis, V. Starikov","doi":"10.17217/2079-0333-2021-57-70-81","DOIUrl":"https://doi.org/10.17217/2079-0333-2021-57-70-81","url":null,"abstract":"","PeriodicalId":107323,"journal":{"name":"Bulletin оf Kamchatka State Technical University","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124956777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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