Pub Date : 2023-06-01DOI: 10.23939/ctas2023.01.124
A. Masyuk, D. Kechur, D. B. Kysil, B. Kulish, V. Levytskyi
The physicochemical patterns of interactions in the starch-glycerol-epoxidized soybean oil system were studied. On the basis of rheological curves, the effect of plasticizers on the viscosity of glycerin-starch systems was revealed, depending on the shear rate, time of exposure at temperature, and the nature of starch. The effect of epoxidized soybean oil on the viscosity of glycerin-moist starch systems was revealed. On the basis of IR spectroscopic studies and refractive index values, the existence of interactions between the system components was confirmed. The influence of the nature of the plasticizer on the ability to wet the surface of the plasticized starch was determined using the marginal wetting angle.
{"title":"Рhysico-chemical interactions in plasticized starch materials","authors":"A. Masyuk, D. Kechur, D. B. Kysil, B. Kulish, V. Levytskyi","doi":"10.23939/ctas2023.01.124","DOIUrl":"https://doi.org/10.23939/ctas2023.01.124","url":null,"abstract":"The physicochemical patterns of interactions in the starch-glycerol-epoxidized soybean oil system were studied. On the basis of rheological curves, the effect of plasticizers on the viscosity of glycerin-starch systems was revealed, depending on the shear rate, time of exposure at temperature, and the nature of starch. The effect of epoxidized soybean oil on the viscosity of glycerin-moist starch systems was revealed. On the basis of IR spectroscopic studies and refractive index values, the existence of interactions between the system components was confirmed. The influence of the nature of the plasticizer on the ability to wet the surface of the plasticized starch was determined using the marginal wetting angle.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88344807","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 : 2023-06-01DOI: 10.23939/ctas2023.01.075
M. Stasevych, I. Buchkevych, M. Y. Dronik
The basis of the production technology of the diclofenac substance, which consists of five main technological stages, is justified and proposed. The proposed technological aspects of diclofenac substance production allow obtaining the target product with a total yield of 61%. Material calculations were carried out to obtain 1 ton of the final diclofenac substance. The numbers of necessary technological equipment are selected, and a basic technological scheme for the production of diclofenac is proposed.
{"title":"Тhe technology basis of diclofenac substance production","authors":"M. Stasevych, I. Buchkevych, M. Y. Dronik","doi":"10.23939/ctas2023.01.075","DOIUrl":"https://doi.org/10.23939/ctas2023.01.075","url":null,"abstract":"The basis of the production technology of the diclofenac substance, which consists of five main technological stages, is justified and proposed. The proposed technological aspects of diclofenac substance production allow obtaining the target product with a total yield of 61%. Material calculations were carried out to obtain 1 ton of the final diclofenac substance. The numbers of necessary technological equipment are selected, and a basic technological scheme for the production of diclofenac is proposed.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73377283","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 : 2023-06-01DOI: 10.23939/ctas2023.01.022
M. Zhukrovska, Z. Komarenska
The influence of the reaction conditions on the selectivity of the interaction of oct-1-ene with tert-butyl hydroperoxide in the presence of MoB was investigated. It is shown that the selectivity of 1,2-epoxyoctane formation can vary depending on the reaction conditions.With the participation of the activated form of the catalyst, the selectivity increases significantly, but does not reach 100%. The optimal reaction conditions under which the selectivity of 1,2-epoxyoctane formation exceeds 90% have been established.
{"title":"Influence of reaction conditions on the selectivity of the process of epoxidation of oct-1-ene by tert-butyl hydroperoxide in the presence of МоВ","authors":"M. Zhukrovska, Z. Komarenska","doi":"10.23939/ctas2023.01.022","DOIUrl":"https://doi.org/10.23939/ctas2023.01.022","url":null,"abstract":"The influence of the reaction conditions on the selectivity of the interaction of oct-1-ene with tert-butyl hydroperoxide in the presence of MoB was investigated. It is shown that the selectivity of 1,2-epoxyoctane formation can vary depending on the reaction conditions.With the participation of the activated form of the catalyst, the selectivity increases significantly, but does not reach 100%. The optimal reaction conditions under which the selectivity of 1,2-epoxyoctane formation exceeds 90% have been established.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88633633","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 : 2023-06-01DOI: 10.23939/ctas2023.01.045
А. Ludyn
The water obtained by reverse osmosis was studied and the method of regulating the composition of its ions, necessary for the use of this water in the mashing process in order to obtain high-quality beer, was considered. The influence of mash water ions on beer quality indicators was studied. It was found that the concentrations of individual ions in water have the greatest effect on the organoleptic parameters of the finished drink and especially on the hop bitterness. It was studied that the increase in the ratio of cations Ca2+/Na+ and sulfates and chlorides SO42-/Cl- in mash water has a positive effect on the organoleptic and quality parameters of beer.
{"title":"Іons composition of mash water and their influence on beer quality","authors":"А. Ludyn","doi":"10.23939/ctas2023.01.045","DOIUrl":"https://doi.org/10.23939/ctas2023.01.045","url":null,"abstract":"The water obtained by reverse osmosis was studied and the method of regulating the composition of its ions, necessary for the use of this water in the mashing process in order to obtain high-quality beer, was considered. The influence of mash water ions on beer quality indicators was studied. It was found that the concentrations of individual ions in water have the greatest effect on the organoleptic parameters of the finished drink and especially on the hop bitterness. It was studied that the increase in the ratio of cations Ca2+/Na+ and sulfates and chlorides SO42-/Cl- in mash water has a positive effect on the organoleptic and quality parameters of beer.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81249688","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 : 2023-06-01DOI: 10.23939/ctas2023.01.069
Y. Z. Znak, О. Grynyshyn, Т. І. Chervinskyy
The paper describes the results of studying the composition and properties of oil sludge obtained during oil processing at an oil refinery. Samples of fresh oil sludge and oil sludge of long-term storage, taken at different depths of the storage pond, were studied. The main properties and group hydrocarbon composition of the organic part of oil sludges were studied.
{"title":"Study of the composition and properties of oil sludges formed as a result of oil processing","authors":"Y. Z. Znak, О. Grynyshyn, Т. І. Chervinskyy","doi":"10.23939/ctas2023.01.069","DOIUrl":"https://doi.org/10.23939/ctas2023.01.069","url":null,"abstract":"The paper describes the results of studying the composition and properties of oil sludge obtained during oil processing at an oil refinery. Samples of fresh oil sludge and oil sludge of long-term storage, taken at different depths of the storage pond, were studied. The main properties and group hydrocarbon composition of the organic part of oil sludges were studied.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"133 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76645979","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 : 2023-06-01DOI: 10.23939/ctas2023.01.154
O. Shevchuk, N. Bukartyk, M. Chobit, O. P. Pomyluiko, V. Tokarev
The new method of obtaining nanocomposite hydrogels with embedded mineral nanoparticles has been proposed. CdS nanoparticles have been synthesized in situ in hydrogel matrix based on the copolymer of acrylamide and acrylic acid under the conditions of diffusion fluxes of Cd2+ та S2- structure-forming ions. The formation of CdS nanoparticles in polymeric matrix has been approved by the methods of XRD, energy- dispersive analysis, UV-spectroscopy. The influence of the content of polymer matrix onto physico- mechanical properties of hydrogel has been studied.
提出了一种制备纳米矿物包埋纳米复合水凝胶的新方法。以丙烯酰胺和丙烯酸为共聚物，在Cd2+ та S2-结构形成离子扩散通量的条件下，在水凝胶基质中原位合成了CdS纳米颗粒。通过XRD、能谱分析、紫外光谱等方法证实了CdS纳米颗粒在聚合物基体中的形成。研究了聚合物基质含量对水凝胶物理力学性能的影响。
{"title":"Formation and properties of cross-linked polyacrylamide hydrogels with cds nanoparticles","authors":"O. Shevchuk, N. Bukartyk, M. Chobit, O. P. Pomyluiko, V. Tokarev","doi":"10.23939/ctas2023.01.154","DOIUrl":"https://doi.org/10.23939/ctas2023.01.154","url":null,"abstract":"The new method of obtaining nanocomposite hydrogels with embedded mineral nanoparticles has been proposed. CdS nanoparticles have been synthesized in situ in hydrogel matrix based on the copolymer of acrylamide and acrylic acid under the conditions of diffusion fluxes of Cd2+ та S2- structure-forming ions. The formation of CdS nanoparticles in polymeric matrix has been approved by the methods of XRD, energy- dispersive analysis, UV-spectroscopy. The influence of the content of polymer matrix onto physico- mechanical properties of hydrogel has been studied.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91030045","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 : 2023-06-01DOI: 10.23939/ctas2023.01.001
L. Oliynyk
The process of interaction of copper ions with polyacrylic acid is investigated in this paper.It is shown that complexes are formed by the interaction of polyacrylic acid with copper ions (II) in a wide range of pH.At pH <4 the precipitate of complexes falls, the pH of the solution increases, water-soluble copper complexes (II) with polyacrylic acid are formed.The solubility of such complexes depends on the number of ionized carboxyl groups of the macromolecule.At low concentrations of copper ions (II) in the mixture, complexes associated with two carboxyl groups of polyacids are formed.At high concentrations of copper ions(ІІ), one ion of copper (II) binds only one carboxyl group and hydroxocomplex copper (II) is formed.It was established that the viscosity of aqueous solutions of polyacrylic acid decreases with an increase in the concentration of copper ions (II) due to the formation of complexes between them.The influence of the pH of the solution, the concentration of polyacrylic acid and copper ions (II) in the solution on the amount of bound copper during the formation of copper salt sediment with polyacids is shown.
{"title":"Study of complex formation copper (II) ions with polyacrylic acid","authors":"L. Oliynyk","doi":"10.23939/ctas2023.01.001","DOIUrl":"https://doi.org/10.23939/ctas2023.01.001","url":null,"abstract":"The process of interaction of copper ions with polyacrylic acid is investigated in this paper.It is shown that complexes are formed by the interaction of polyacrylic acid with copper ions (II) in a wide range of pH.At pH <4 the precipitate of complexes falls, the pH of the solution increases, water-soluble copper complexes (II) with polyacrylic acid are formed.The solubility of such complexes depends on the number of ionized carboxyl groups of the macromolecule.At low concentrations of copper ions (II) in the mixture, complexes associated with two carboxyl groups of polyacids are formed.At high concentrations of copper ions(ІІ), one ion of copper (II) binds only one carboxyl group and hydroxocomplex copper (II) is formed.It was established that the viscosity of aqueous solutions of polyacrylic acid decreases with an increase in the concentration of copper ions (II) due to the formation of complexes between them.The influence of the pH of the solution, the concentration of polyacrylic acid and copper ions (II) in the solution on the amount of bound copper during the formation of copper salt sediment with polyacids is shown.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79655734","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 : 2023-06-01DOI: 10.23939/ctas2023.01.110
D. Kindzera, V. Kochubei, V. Atamanyuk, N. Tsiura, A. Helesh
The filtration method of gradual dehydration of Iron(II) sulfate heptahydrate hase been proposed. Based on the generalization of experimental data of hydrodynamics, the calculated dependence Euзовн=155∙Reзовн-0,55∙Hdч was obtained, which makes it possible to determine theoreticallypressure losses in the stationary layer of FeSO4·7H2O.According to the results of complex thermal analysis, the regularities of the gradual dehydration process of FeSO4·7H2O have been established in different temperature intervals. The temperature of 339K has been chosen, to implement the FeSO4∙7H2O dehydration process with the separation of the first three molecules of crystallization water, ensuring the preservation of the crystalline state of the product.The kinetics of moisture removal from FeSO4∙7H2Oat different heights of the material layer and velocities of heat agent movement have been investigated. Based on energy consumption calculations, the optimal parameters of the process were established: the height of the stationary layer Н = 60.10-3mand the fictitious velocities of the heat agent movement v0 =0,86 m/s.The filtration method of gradual dehydration of Iron(II) sulfate heptahydrate hase been proposed. Based on the generalization of experimental data of hydrodynamics, the calculated dependence Euзовн=155∙Reзовн-0,55∙Hdч was obtained, which makes it possible to determine theoreticallypressure losses in the stationary layer of FeSO4·7H2O.According to the results of complex thermal analysis, the regularities of the gradual dehydration process of FeSO4·7H2O have been established in different temperature intervals. The temperature of 339K has been chosen, to implement the FeSO4∙7H2O dehydration process with the separation of the first three molecules of crystallization water, ensuring the preservation of the crystalline state of the product.The kinetics of moisture removal from FeSO4∙7H2Oat different heights of the material layer and velocities of heat agent movement have been investigated. Based on energy consumption calculations, the optimal parameters of the process were established: the height of the stationary layer Н = 60.10-3mand the fictitious velocities of the heat agent movement v0 =0,86 m/s.
{"title":"Study of the influence of regime factors on the kinetics of the dehydration process of iron (ii) sulfate heptahydrate using the filtration method","authors":"D. Kindzera, V. Kochubei, V. Atamanyuk, N. Tsiura, A. Helesh","doi":"10.23939/ctas2023.01.110","DOIUrl":"https://doi.org/10.23939/ctas2023.01.110","url":null,"abstract":"The filtration method of gradual dehydration of Iron(II) sulfate heptahydrate hase been proposed. Based on the generalization of experimental data of hydrodynamics, the calculated dependence Euзовн=155∙Reзовн-0,55∙Hdч was obtained, which makes it possible to determine theoreticallypressure losses in the stationary layer of FeSO4·7H2O.According to the results of complex thermal analysis, the regularities of the gradual dehydration process of FeSO4·7H2O have been established in different temperature intervals. The temperature of 339K has been chosen, to implement the FeSO4∙7H2O dehydration process with the separation of the first three molecules of crystallization water, ensuring the preservation of the crystalline state of the product.The kinetics of moisture removal from FeSO4∙7H2Oat different heights of the material layer and velocities of heat agent movement have been investigated. Based on energy consumption calculations, the optimal parameters of the process were established: the height of the stationary layer Н = 60.10-3mand the fictitious velocities of the heat agent movement v0 =0,86 m/s.The filtration method of gradual dehydration of Iron(II) sulfate heptahydrate hase been proposed. Based on the generalization of experimental data of hydrodynamics, the calculated dependence Euзовн=155∙Reзовн-0,55∙Hdч was obtained, which makes it possible to determine theoreticallypressure losses in the stationary layer of FeSO4·7H2O.According to the results of complex thermal analysis, the regularities of the gradual dehydration process of FeSO4·7H2O have been established in different temperature intervals. The temperature of 339K has been chosen, to implement the FeSO4∙7H2O dehydration process with the separation of the first three molecules of crystallization water, ensuring the preservation of the crystalline state of the product.The kinetics of moisture removal from FeSO4∙7H2Oat different heights of the material layer and velocities of heat agent movement have been investigated. Based on energy consumption calculations, the optimal parameters of the process were established: the height of the stationary layer Н = 60.10-3mand the fictitious velocities of the heat agent movement v0 =0,86 m/s.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"320 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82916394","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 : 2023-06-01DOI: 10.23939/ctas2023.01.148
А. М. Kucherenko, I. Gajdoš, M. Kuznetsova, V. Moravskyi
The possibility of obtaining metallized granules of high-tonnage polymers using classical metallization technology was studied. It is shown that this technology is not effective during the metallization of polyethylene and polypropylene. Certain positive points during metallization were achieved only in the case of polyvinyl chloride granules. It was established that the treatment of granules with etching agents of different nature does not lead to a significant change in surface properties, which can explain the low efficiency of classical technology during the metallization of polyethylene, polypropylene and polyvinyl chloride granules.
{"title":"Сhecking the possibilities of the classic technology of chemical metalization of polymer granules","authors":"А. М. Kucherenko, I. Gajdoš, M. Kuznetsova, V. Moravskyi","doi":"10.23939/ctas2023.01.148","DOIUrl":"https://doi.org/10.23939/ctas2023.01.148","url":null,"abstract":"The possibility of obtaining metallized granules of high-tonnage polymers using classical metallization technology was studied. It is shown that this technology is not effective during the metallization of polyethylene and polypropylene. Certain positive points during metallization were achieved only in the case of polyvinyl chloride granules. It was established that the treatment of granules with etching agents of different nature does not lead to a significant change in surface properties, which can explain the low efficiency of classical technology during the metallization of polyethylene, polypropylene and polyvinyl chloride granules.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90327301","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 : 2023-06-01DOI: 10.23939/ctas2023.01.015
Y. Horak, D. S. Shevchenko, I. В. Sobechko
Based on the temperature dependence of the solubility of 5-(2-nitrophenyl)-furan-2-carboxylic acid, 5-(3-nitrophenyl)-furan-2-carboxylic acid and 5-(4-nitrophenyl)-furan-2-carboxylic acid in propan-2-ol, the enthalpy and entropy of their dissolution were calculated. Taking into account the enthalpy and entropy of melting recalculated to 298 K, the enthalpies and entropies of mixing were calculated. The dependence of the solubility of carboxyl-containing substances at 298 K on their melting point was determined.
{"title":"Thermodynamic parameters of 5-(nitrophenyl)-furan-2-carboxylic acids solutions in propan-2-ol","authors":"Y. Horak, D. S. Shevchenko, I. В. Sobechko","doi":"10.23939/ctas2023.01.015","DOIUrl":"https://doi.org/10.23939/ctas2023.01.015","url":null,"abstract":"Based on the temperature dependence of the solubility of 5-(2-nitrophenyl)-furan-2-carboxylic acid, 5-(3-nitrophenyl)-furan-2-carboxylic acid and 5-(4-nitrophenyl)-furan-2-carboxylic acid in propan-2-ol, the enthalpy and entropy of their dissolution were calculated. Taking into account the enthalpy and entropy of melting recalculated to 298 K, the enthalpies and entropies of mixing were calculated. The dependence of the solubility of carboxyl-containing substances at 298 K on their melting point was determined.","PeriodicalId":9808,"journal":{"name":"Chemistry, Technology and Application of Substances","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88380390","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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