Pub Date : 2024-05-23DOI: 10.1134/s2075113324010179
Sh. A. Musoev, A. V. Knotko, Ya. Yu. Filippov
Abstract
This work examines the reinforcement of reaction-hardening phosphate materials (phosphate cements) for bone implants based on isomorphically cation-(Na+, K+) and anion-(({text{SiO}}_{4}^{{4 - }}), ({text{SO}}_{4}^{2})) substituted tricalcium phosphate (β and α-TCP, Ca3(PO4)2), which are reinforced with silicate (basalt-based) fiberglass. The resulting materials were characterized by XRD and SEM methods, mechanical compression tests were carried out, the setting times of cements were determined, and changes in the pH of aqueous medium in contact with the cements under study were measured. Analysis of microstructure showed that the reinforcing fiber surface, upon contact with the matrix of hardening cement, is partially corroded with the formation of phosphate microparticles on it. Using the pH-metry method, it was found that samples with prolonged contact to water do not significantly change the value of the pH of the aqueous environment, which remains close to the neutral range from 5 to 7.5, favorable for further biological tests.
Abstract This work examines the reinforcement of reaction-hardening phosphate materials (phosphate cements) for bone implants based on isomorphically cation-(Na+. K+) and anion-({text{SiO}}_{4}^{4 - }})、K+）和阴离子（{text{SiO}}_{4}^{4 - }}), ({text{SO}}_{4}^{2})）取代的磷酸三钙（β 和 α-TCP，Ca3(PO4)2），并用硅酸盐（玄武岩基）玻璃纤维对其进行加固。通过 XRD 和 SEM 方法对所得材料进行了表征，进行了机械压缩试验，测定了水泥的凝结时间，并测量了与所研究水泥接触的水介质 pH 值的变化。微观结构分析表明，在与硬化水泥基质接触时，增强纤维表面会被部分腐蚀，并在其上形成磷酸盐微粒。使用 pH 值测定法发现，长期与水接触的样品不会明显改变水环境的 pH 值，其值仍接近 5 至 7.5 的中性范围，有利于进一步的生物测试。
{"title":"Calcium Phosphate Brushite Cements Made of Substituted Tricalcium Phosphate Ca3(PO4)2 and Reinforced with Silicate Glass Fiber","authors":"Sh. A. Musoev, A. V. Knotko, Ya. Yu. Filippov","doi":"10.1134/s2075113324010179","DOIUrl":"https://doi.org/10.1134/s2075113324010179","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This work examines the reinforcement of reaction-hardening phosphate materials (phosphate cements) for bone implants based on isomorphically cation-(Na<sup>+</sup>, K<sup>+</sup>) and anion-(<span>({text{SiO}}_{4}^{{4 - }})</span>, <span>({text{SO}}_{4}^{2})</span>) substituted tricalcium phosphate (β and α-TCP, Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>), which are reinforced with silicate (basalt-based) fiberglass. The resulting materials were characterized by XRD and SEM methods, mechanical compression tests were carried out, the setting times of cements were determined, and changes in the pH of aqueous medium in contact with the cements under study were measured. Analysis of microstructure showed that the reinforcing fiber surface, upon contact with the matrix of hardening cement, is partially corroded with the formation of phosphate microparticles on it. Using the pH-metry method, it was found that samples with prolonged contact to water do not significantly change the value of the pH of the aqueous environment, which remains close to the neutral range from 5 to 7.5, favorable for further biological tests.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149082","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 : 2024-05-23DOI: 10.1134/s2075113324010258
P. N. Petrova, M. A. Markova, V. D. Chernykh
Abstract
This paper presents the results of research on the development of technologies for production of wear-resistant polymer materials based on polytetrafluoroethylene (PTFE) and carbon fibers of the UVIS-AK-P brand. Physical, mechanical, and tribological characteristics of polymer composites have been studied depending on the technology for their production. To predict the performance of the developed composites under various operating conditions, the joint influence of the load applied during the friction process and the sliding speed on the mass wear rate and the friction coefficient of the developed materials has been studied.
{"title":"Investigation of Properties of Polytetrafluoroethylene-Based Composites and Carbon Fibers Depending on the Production Technology","authors":"P. N. Petrova, M. A. Markova, V. D. Chernykh","doi":"10.1134/s2075113324010258","DOIUrl":"https://doi.org/10.1134/s2075113324010258","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This paper presents the results of research on the development of technologies for production of wear-resistant polymer materials based on polytetrafluoroethylene (PTFE) and carbon fibers of the UVIS-AK-P brand. Physical, mechanical, and tribological characteristics of polymer composites have been studied depending on the technology for their production. To predict the performance of the developed composites under various operating conditions, the joint influence of the load applied during the friction process and the sliding speed on the mass wear rate and the friction coefficient of the developed materials has been studied.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141152191","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 : 2024-05-23DOI: 10.1134/s207511332401026x
N. N. Popov, D. V. Presnyakov, E. N. Grishin, T. I. Sysoeva, T. A. Morozova, S. V. Glukhareva, A. A. Kostyleva
Abstract
The properties of the Ni50Ti47.5Hf2.5 alloy with a high-temperature shape memory effect have been comprehensively studied on samples made from a 2.34-mm-thick strip in the initial state and after high-temperature annealing in vacuum. Data on the elemental and phase compositions and structural state have been obtained. The results of investigations of the phase transformation temperatures and the mechanical and thermomechanical characteristics of the alloy are reported. Using annealing and selecting the strain-inducing conditions, the shape recovery temperatures AsSME = 137°C and AfSME = 150°C have been determined. These values are acceptable for creating the required depressurization device. The maximum εSME and ηSME values have been found to be 3.4 and 43%, respectively. These are not very large values for creating an efficient depressurization device for nuclear power plants. The desired displacement values in such a device can be obtained by optimizing the geometry of a thermosensitive element.
摘要 对具有高温形状记忆效应的 Ni50Ti47.5Hf2.5 合金的初始状态和真空高温退火后的 2.34 毫米厚带材样品的性能进行了全面研究。获得了有关元素和相组成以及结构状态的数据。报告了对合金相变温度以及机械和热机械特性的研究结果。通过退火和选择应变诱导条件，确定了形状恢复温度 As SME = 137°C 和 Af SME = 150°C。这些值对于制造所需的减压装置是可以接受的。最大 εSME 和 ηSME 值分别为 3.4% 和 43%。对于为核电站制造高效减压装置来说，这些数值并不算大。通过优化热敏元件的几何形状，可以在这种装置中获得所需的位移值。
{"title":"Mechanical and Thermomechanical Characteristics of the Ni50Ti47.5Hf2.5 Alloy with a High-Temperature Shape Memory Effect","authors":"N. N. Popov, D. V. Presnyakov, E. N. Grishin, T. I. Sysoeva, T. A. Morozova, S. V. Glukhareva, A. A. Kostyleva","doi":"10.1134/s207511332401026x","DOIUrl":"https://doi.org/10.1134/s207511332401026x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The properties of the Ni<sub>50</sub>Ti<sub>47.5</sub>Hf<sub>2.5</sub> alloy with a high-temperature shape memory effect have been comprehensively studied on samples made from a 2.34-mm-thick strip in the initial state and after high-temperature annealing in vacuum. Data on the elemental and phase compositions and structural state have been obtained. The results of investigations of the phase transformation temperatures and the mechanical and thermomechanical characteristics of the alloy are reported. Using annealing and selecting the strain-inducing conditions, the shape recovery temperatures <i>A</i><sub><i>s</i></sub> <sub>SME</sub> = 137°C and <i>A</i><sub><i>f</i></sub> <sub>SME</sub> = 150°C have been determined. These values are acceptable for creating the required depressurization device. The maximum ε<sub>SME</sub> and η<sub>SME</sub> values have been found to be 3.4 and 43%, respectively. These are not very large values for creating an efficient depressurization device for nuclear power plants. The desired displacement values in such a device can be obtained by optimizing the geometry of a thermosensitive element.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149084","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 : 2024-05-23DOI: 10.1134/s2075113324010052
T. A. Borukaev, L. I. Kitieva, A. Kh. Malamatov
Abstract
Stabilization of polybutylene terephthalate by various antioxidants is performed. The optimum concentrations of antioxidants are determined at which substantial values of heat resistance and thermal stability are achieved. It is shown that the use of mixed systems of different stabilizers makes it possible to effectively inhibit the thermo-oxidative destruction of polybutylene terephthalate.
{"title":"Stabilization of Polybutylene Terephthalate by Various Antioxidants","authors":"T. A. Borukaev, L. I. Kitieva, A. Kh. Malamatov","doi":"10.1134/s2075113324010052","DOIUrl":"https://doi.org/10.1134/s2075113324010052","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Stabilization of polybutylene terephthalate by various antioxidants is performed. The optimum concentrations of antioxidants are determined at which substantial values of heat resistance and thermal stability are achieved. It is shown that the use of mixed systems of different stabilizers makes it possible to effectively inhibit the thermo-oxidative destruction of polybutylene terephthalate.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149157","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 : 2024-05-23DOI: 10.1134/s2075113324010209
T. V. A. Nguyen, B. P. Tolochko, F. K. Gorbunov, A. A. Fadina
Abstract
MgAl–layered double hydroxides with different molar ratios of cations were synthesized. The compound with a ratio of 2 : 1 was shown to exhibit better characteristics of thermal stability. The modification of polyurethane by using these hydroxides led to the improvement in the properties of composites: decrease by 47% in flame retardancy, and increase by 24.8 and 54.1% in tensile strength and Young’s modulus, respectively.
{"title":"MgAl-Layered Double Hydroxides: Synthesis, Characteristics, and Their Effects on Flame Retardant and Mechanical Properties of Casting Polyurethane","authors":"T. V. A. Nguyen, B. P. Tolochko, F. K. Gorbunov, A. A. Fadina","doi":"10.1134/s2075113324010209","DOIUrl":"https://doi.org/10.1134/s2075113324010209","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>MgAl–layered double hydroxides with different molar ratios of cations were synthesized. The compound with a ratio of 2 : 1 was shown to exhibit better characteristics of thermal stability. The modification of polyurethane by using these hydroxides led to the improvement in the properties of composites: decrease by 47% in flame retardancy, and increase by 24.8 and 54.1% in tensile strength and Young’s modulus, respectively.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149168","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 : 2024-05-23DOI: 10.1134/s2075113324010210
A. N. Nikolaev, E. S. Stepichev, S. N. Perevislov
Abstract
In this work, diamond–SiC composite materials modified with hafnium have been obtained, and their thermal stability at 1200°C in air has been studied. The phase composition, microstructure, and physical and mechanical characteristics have been determined. A higher thermal stability of sintered Hf-modified materials has been demonstrated compared to a diamond–silicon carbide composite materials with no additives.
{"title":"Heat-Resistant Diamond–Silicon Carbide Composite Materials Modified with Hafnium","authors":"A. N. Nikolaev, E. S. Stepichev, S. N. Perevislov","doi":"10.1134/s2075113324010210","DOIUrl":"https://doi.org/10.1134/s2075113324010210","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this work, diamond–SiC composite materials modified with hafnium have been obtained, and their thermal stability at 1200°C in air has been studied. The phase composition, microstructure, and physical and mechanical characteristics have been determined. A higher thermal stability of sintered Hf-modified materials has been demonstrated compared to a diamond–silicon carbide composite materials with no additives.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149216","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 : 2024-05-23DOI: 10.1134/s207511332401012x
L. Yu. Fedorov, A. V. Ushakov, I. V. Karpov, E. A. Goncharova, M. V. Brungardt
Abstract
Superconducting polycrystalline composites YBa2Cu3O7–x + MoO3 with MoO3 nanofiber content of 1, 5, 10, and 15 wt % have been studied in the work. The temperature and width of transition into the superconducting state of samples with description of possible mechanisms for observable changes have been determined from measurements of electrical resistance. The elastic modulus, yield strength, fracture toughness, and fragility index have been determined from measurements of the Vickers microhardness. Five different models have been used during studies on the physical and mechanical properties of the MoO3-containing bulk HTSC samples to interpret microindentation data and explain the results with consideration of the indentation size effect.
{"title":"Studies on Microhardness of Composition Materials of High-Temperature Superconductor YBCO–MoO3 Nanofibers","authors":"L. Yu. Fedorov, A. V. Ushakov, I. V. Karpov, E. A. Goncharova, M. V. Brungardt","doi":"10.1134/s207511332401012x","DOIUrl":"https://doi.org/10.1134/s207511332401012x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Superconducting polycrystalline composites YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7–<i>x</i></sub> + MoO<sub>3</sub> with MoO<sub>3</sub> nanofiber content of 1, 5, 10, and 15 wt % have been studied in the work. The temperature and width of transition into the superconducting state of samples with description of possible mechanisms for observable changes have been determined from measurements of electrical resistance. The elastic modulus, yield strength, fracture toughness, and fragility index have been determined from measurements of the Vickers microhardness. Five different models have been used during studies on the physical and mechanical properties of the MoO<sub>3</sub>-containing bulk HTSC samples to interpret microindentation data and explain the results with consideration of the indentation size effect.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149113","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 : 2024-05-23DOI: 10.1134/s2075113324010222
P. S. Onishchenko, T. V. Glushkova, A. E. Kostyunin, M. A. Rezvova, T. N. Akentyeva, L. S. Barbarash
Abstract
The physical and mechanical characteristics of the component materials of bioprosthetic heart valves presented in clinical practice in Russia were obtained and generalized for subsequent adaptation of the properties for numerical modeling problems. It was shown that all materials studied have pronounced nonlinearity and can be represented only in the form of polynomial models. A comparison of the results of computer modeling based on the obtained material coefficients did not demonstrate any differences with the data of full-scale bench tests, which made it possible to verify the computer models.
{"title":"Computer Models of Biomaterials Used for the Manufacture of the Leaflet Apparatus of Heart Valve Prostheses","authors":"P. S. Onishchenko, T. V. Glushkova, A. E. Kostyunin, M. A. Rezvova, T. N. Akentyeva, L. S. Barbarash","doi":"10.1134/s2075113324010222","DOIUrl":"https://doi.org/10.1134/s2075113324010222","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The physical and mechanical characteristics of the component materials of bioprosthetic heart valves presented in clinical practice in Russia were obtained and generalized for subsequent adaptation of the properties for numerical modeling problems. It was shown that all materials studied have pronounced nonlinearity and can be represented only in the form of polynomial models. A comparison of the results of computer modeling based on the obtained material coefficients did not demonstrate any differences with the data of full-scale bench tests, which made it possible to verify the computer models.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149154","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 : 2024-05-23DOI: 10.1134/s2075113324010131
M. A. Frolova, A. M. Ayzenshtadt, V. E. Danilov, T. A. Makhova
Abstract
A thermodynamic criterion—surface activity—has been proposed to characterize the reactivity of powder materials obtained by the method of mechanical grinding. The work shows that, between the surface activity calculated taking into account values of the specific surface area of powder materials determined by the method of gas sorption and this criterion calculated from the specific surface area determined by the method of gas permeability, there is a functional interrelation that allows one to draw a conclusion about the effectiveness of mechanical activation of mineral raw material systems.
{"title":"Mineral Powders: Activity and Specific Surface Area","authors":"M. A. Frolova, A. M. Ayzenshtadt, V. E. Danilov, T. A. Makhova","doi":"10.1134/s2075113324010131","DOIUrl":"https://doi.org/10.1134/s2075113324010131","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A thermodynamic criterion—surface activity—has been proposed to characterize the reactivity of powder materials obtained by the method of mechanical grinding. The work shows that, between the surface activity calculated taking into account values of the specific surface area of powder materials determined by the method of gas sorption and this criterion calculated from the specific surface area determined by the method of gas permeability, there is a functional interrelation that allows one to draw a conclusion about the effectiveness of mechanical activation of mineral raw material systems.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141152143","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 : 2024-05-23DOI: 10.1134/s2075113324010283
Yu. A. Puchkov, I. Benarieb
Abstract
This article presents the results of a study of the influence of cooling modes during quenching on the structure and corrosion resistance in NaCl aqueous solutions of a high-tech deformable corrosion-resistant alloy V-1341 in a state after artificial aging. The structure and corrosion resistance of this alloy in the annealed state were also studied. Studies were carried out using the potentiodynamic method, electrochemical impedance spectroscopy, and transmission electron microscopy. The results obtained can be used when choosing the quenching cooling modes for products made of alloy V-1341 and predicting their corrosion resistance.
{"title":"Influence of Cooling Modes during Quenching on Structure and Corrosion Resistance of Alloy V-1341T1","authors":"Yu. A. Puchkov, I. Benarieb","doi":"10.1134/s2075113324010283","DOIUrl":"https://doi.org/10.1134/s2075113324010283","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This article presents the results of a study of the influence of cooling modes during quenching on the structure and corrosion resistance in NaCl aqueous solutions of a high-tech deformable corrosion-resistant alloy V-1341 in a state after artificial aging. The structure and corrosion resistance of this alloy in the annealed state were also studied. Studies were carried out using the potentiodynamic method, electrochemical impedance spectroscopy, and transmission electron microscopy. The results obtained can be used when choosing the quenching cooling modes for products made of alloy V-1341 and predicting their corrosion resistance.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":null,"pages":null},"PeriodicalIF":0.75,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141149203","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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