Pub Date : 2022-01-01DOI: 10.4236/jmmce.2022.105027
A. Njom, A. Mewoli, Marie Josette Ndengue, F. B. Ebanda, Augustine Demze Nitidem, Sandrine Biloa Otiti, Yannick Devario Youssi Bang, Legrand Ndoumou Belinga, Pierre Marcel Anicet Noah, A. Ateba
This article contributes to the development of the new class of fully biode-gradable “green” composites by combining fibers (natural/bio) with biode-gradable resin. The vegetable fibers (Triumfetta cordifolia and sugarcane bagasse) treated with NaOH and bleached were incorporated into a natural rubber matrix. The influence of the fiber ratio on the physical properties, tensile strength and surface hardness of the hybrid composites was analyzed. The results show that the addition of fibers in the natural rubber matrix increases the water absorption capacity but gradually reduces it with increasing fiber ratio. The hybrid composites of the NRT50-50B proportions show the best tensile strengths at 20 phr and a shore A hardness of 43.7 at 30 phr. The combination of two fibers has improved the physical and mechanical properties of the hybrid composites which can be used in engineering applications.
{"title":"Hybrid Composite Based on Natural Rubber Reinforced with Short Fibers of the <i>Triumfetta cordifolia/Saccharum officinarum</i> L.: Performance Evaluation","authors":"A. Njom, A. Mewoli, Marie Josette Ndengue, F. B. Ebanda, Augustine Demze Nitidem, Sandrine Biloa Otiti, Yannick Devario Youssi Bang, Legrand Ndoumou Belinga, Pierre Marcel Anicet Noah, A. Ateba","doi":"10.4236/jmmce.2022.105027","DOIUrl":"https://doi.org/10.4236/jmmce.2022.105027","url":null,"abstract":"This article contributes to the development of the new class of fully biode-gradable “green” composites by combining fibers (natural/bio) with biode-gradable resin. The vegetable fibers (Triumfetta cordifolia and sugarcane bagasse) treated with NaOH and bleached were incorporated into a natural rubber matrix. The influence of the fiber ratio on the physical properties, tensile strength and surface hardness of the hybrid composites was analyzed. The results show that the addition of fibers in the natural rubber matrix increases the water absorption capacity but gradually reduces it with increasing fiber ratio. The hybrid composites of the NRT50-50B proportions show the best tensile strengths at 20 phr and a shore A hardness of 43.7 at 30 phr. The combination of two fibers has improved the physical and mechanical properties of the hybrid composites which can be used in engineering applications.","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"217 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79666692","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 : 2022-01-01DOI: 10.4236/jmmce.2022.103021
Sidpouita Mathilde Koudougou, G. C. Tubreoumya, D. Toguyeni, Tégawendé Justin Zaida
Current pavement design methods do not allow for the reduction of early deformation of the surface layers of bituminous pavements in the city of Ouagadougou. Weather conditions combined with traffic, particularly during heat waves, are factors. The temperature at the surface of the bituminous pavement can reach 62˚C but the complex modulus associated with this temperature is not taken into account in the design, hence the interest in pro-posing laws of dependence of the complex moduli is taken into account in the maximum temperatures of the pavement surface. The objective of this paper is to propose an experimental method to determine the temperature dependence of the complex moduli of asphalt mixes for temperatures between 40˚C and 70˚C. This experimental method consists of performing axial compression tests on cylindrical asphalt specimens. It was applied to three different formulas of bituminous mixes, intended for the wearing course, obtained from mixes of crushed granites, granular classes 6/10, 4/6 and 0/4, pure bitumens of grade 50/70, 35/50 and modified bitumen of grade 10/65. The com-parative study of the experimental results obtained with the results of a semi-empirical ing the modulus of rigidity for design purposes under real pavement exposure conditions in the city of Ouagadougou during heat waves.
{"title":"Experimental Alternative to the Determination of the Thermal Dependence of the Complex Modulus of Asphalt Mixes in Dry Tropical Areas","authors":"Sidpouita Mathilde Koudougou, G. C. Tubreoumya, D. Toguyeni, Tégawendé Justin Zaida","doi":"10.4236/jmmce.2022.103021","DOIUrl":"https://doi.org/10.4236/jmmce.2022.103021","url":null,"abstract":"Current pavement design methods do not allow for the reduction of early deformation of the surface layers of bituminous pavements in the city of Ouagadougou. Weather conditions combined with traffic, particularly during heat waves, are factors. The temperature at the surface of the bituminous pavement can reach 62˚C but the complex modulus associated with this temperature is not taken into account in the design, hence the interest in pro-posing laws of dependence of the complex moduli is taken into account in the maximum temperatures of the pavement surface. The objective of this paper is to propose an experimental method to determine the temperature dependence of the complex moduli of asphalt mixes for temperatures between 40˚C and 70˚C. This experimental method consists of performing axial compression tests on cylindrical asphalt specimens. It was applied to three different formulas of bituminous mixes, intended for the wearing course, obtained from mixes of crushed granites, granular classes 6/10, 4/6 and 0/4, pure bitumens of grade 50/70, 35/50 and modified bitumen of grade 10/65. The com-parative study of the experimental results obtained with the results of a semi-empirical ing the modulus of rigidity for design purposes under real pavement exposure conditions in the city of Ouagadougou during heat waves.","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79859942","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 : 2022-01-01DOI: 10.4236/jmmce.2022.101003
P. Chandra, V. Kumar, R. Kiran, D. R. Kumar, C. P. Rao, R. Suresh
The Metal Matrix Composites application has increased in many areas of science and technology, because of its additional physical, wear and mechanical properties. In comparison with all MMC’s, aluminum-based MMC’s are finding wide applications due to their better strength to weight ratio, better stiffness, and high thermal conductivity as well as very good wear and corrosion properties. The properties of a composite mainly depend on better distribution of reinforcement in the matrix, which is very difficult to achieve. Basically Redmud is a byproduct of alumina, and it is waste product obtained during Bayer’s process. This waste product must be recycled else it may be dangerous to the environment. Redmud can be used as reinforcement for aluminium composites in order to achieve better properties. The proposed research work includes preparation of Aluminum 6061-Red mud metal matrix composites using liquid metallurgy route following stir casting technique. An alloy Al6061 containing 0.60 percent silicon and Magnesium of 0.82 percent was used as the matrix material. Two different compositions of the Aluminum 6061-Red mud composites are prepared in addition to the base matrix and evaluated for mechanical properties also the force acting on the cutting tool at different spindle speeds during machining of the composite materials were analyzed.
{"title":"Fabrication, Characterization and Machining of Al6061 Reinforced with Red Mud Composite","authors":"P. Chandra, V. Kumar, R. Kiran, D. R. Kumar, C. P. Rao, R. Suresh","doi":"10.4236/jmmce.2022.101003","DOIUrl":"https://doi.org/10.4236/jmmce.2022.101003","url":null,"abstract":"The Metal Matrix Composites application has increased in many areas of science and technology, because of its additional physical, wear and mechanical properties. In comparison with all MMC’s, aluminum-based MMC’s are finding wide applications due to their better strength to weight ratio, better stiffness, and high thermal conductivity as well as very good wear and corrosion properties. The properties of a composite mainly depend on better distribution of reinforcement in the matrix, which is very difficult to achieve. Basically Redmud is a byproduct of alumina, and it is waste product obtained during Bayer’s process. This waste product must be recycled else it may be dangerous to the environment. Redmud can be used as reinforcement for aluminium composites in order to achieve better properties. The proposed research work includes preparation of Aluminum 6061-Red mud metal matrix composites using liquid metallurgy route following stir casting technique. An alloy Al6061 containing 0.60 percent silicon and Magnesium of 0.82 percent was used as the matrix material. Two different compositions of the Aluminum 6061-Red mud composites are prepared in addition to the base matrix and evaluated for mechanical properties also the force acting on the cutting tool at different spindle speeds during machining of the composite materials were analyzed.","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79379572","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 : 2022-01-01DOI: 10.4236/jmmce.2022.102012
Salma Ahmeed, G. Damrawi
{"title":"Mechanism of Cluster Formation on Cerium Borosilicate Glasses Based on TEM-EDP and SEM-EDEX Investigations","authors":"Salma Ahmeed, G. Damrawi","doi":"10.4236/jmmce.2022.102012","DOIUrl":"https://doi.org/10.4236/jmmce.2022.102012","url":null,"abstract":"","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74646093","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 : 2022-01-01DOI: 10.4236/jmmce.2022.101001
Zh.K. Aidaraliev, Imiyla Rysbaeva, R. Atyrova, Akimbek Abdykalykov, Baktygul Bekbolot Kyzy, Chynara Zholdoshova, N. Sopubekov, A. Kuduev, Iurii Dubinin, Z. Abdullaeva
This article is presenting history of stone casting and analysis of basalt raw materials assessment from other countries for stone casting technology and various basalts compositions were considered. Analytical methods for calculating composition of charge require a long calculation time and plotting dia-grams, each method has its own advantages and disadvantages. As a research significance, we have proposed an experimental calculation method for calculating raw materials after charging. Analysis of the composition, structure of basalts and charging materials were used in the stone casting technology. According to the comparison method, the required amount of charging materials was calculated for the Suluu-Terek 1, Suluu-Terek 2 and Berestovetsk deposits. The calculated data was confirmed by experimental melts in the process of stone casting.
{"title":"Suitability of Suluu-Terek Basalt Deposits for Stone Casting","authors":"Zh.K. Aidaraliev, Imiyla Rysbaeva, R. Atyrova, Akimbek Abdykalykov, Baktygul Bekbolot Kyzy, Chynara Zholdoshova, N. Sopubekov, A. Kuduev, Iurii Dubinin, Z. Abdullaeva","doi":"10.4236/jmmce.2022.101001","DOIUrl":"https://doi.org/10.4236/jmmce.2022.101001","url":null,"abstract":"This article is presenting history of stone casting and analysis of basalt raw materials assessment from other countries for stone casting technology and various basalts compositions were considered. Analytical methods for calculating composition of charge require a long calculation time and plotting dia-grams, each method has its own advantages and disadvantages. As a research significance, we have proposed an experimental calculation method for calculating raw materials after charging. Analysis of the composition, structure of basalts and charging materials were used in the stone casting technology. According to the comparison method, the required amount of charging materials was calculated for the Suluu-Terek 1, Suluu-Terek 2 and Berestovetsk deposits. The calculated data was confirmed by experimental melts in the process of stone casting.","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84516450","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 : 2022-01-01DOI: 10.4236/jmmce.2022.105029
L. Ahouet, Sorel Dzaba, Brice Dublin Mbossa Elenga, Sylvain Ndinga Okina, Fabien T. Kimbatsa
{"title":"Characterization of the Activity, Mineralogy and Correlations between the Properties of Clayey Soils","authors":"L. Ahouet, Sorel Dzaba, Brice Dublin Mbossa Elenga, Sylvain Ndinga Okina, Fabien T. Kimbatsa","doi":"10.4236/jmmce.2022.105029","DOIUrl":"https://doi.org/10.4236/jmmce.2022.105029","url":null,"abstract":"","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82964042","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 : 2022-01-01DOI: 10.4236/jmmce.2022.102013
Rokhaya Gueye, Jérôme Ledauphin, F. Baraud, L. Leleyter, M. Lemoine, Rokhaya Gueye, Adama Diédhiou, M. Balde, Nango Gaye, M. Seck, D. Fall, A. Wélé
This study determined mineral value and antioxidant activity of Senegal fruits for contributing to improving healthy diet and preventing some chronic diseases. Mineral element contents of Dialium guineense, Landolphia heudelotti, Mangifera indica, Cyperus esculentus and Saba senegalensis, which are widely available and consumed, were studied. The results by ICP-OES spectrophotometry after acid mineralization showed highest levels of (per 100 g fruits), calcium (158 mg), potassium (1018 mg), magnesium (532 mg), zinc (26 mg) with juice of Landolphia heudelotti fruit pulp. Mangifera indica pulp is richer in sodium (89 mg), phosphorus (556 mg), sulphur (384 mg) and silicon (110 mg). Dialium senegalensis pulp is richer in iron (23 mg) and manganese (19 mg). Lyophilized Cyperus esculentus rhizomes analyzed by atomic absorption spectrophotometry gave highest concentrations of (per 100 g fruits), calcium (2550 mg), potassium (11,843 mg) and magnesium (7669 mg) but sodium content (22 mg) is lower. In vitro antioxidant activity evaluation with the DPPH radical showed for 10 mg/ml concentration, highest inhibition percentage for Saba senegalensis 4.03%, followed by Landolphia heudelotti and Dialium guineense, which were significantly similar 2.29% and 2.20% respectively, Mangifera indica 1.7% and finally Cyperus esculentus 0.5%, but much lower compared to the ascorbic acid equal to 96.32% used as a reference.
{"title":"Evaluation of Mineral Elements Content of Senegal Fruits","authors":"Rokhaya Gueye, Jérôme Ledauphin, F. Baraud, L. Leleyter, M. Lemoine, Rokhaya Gueye, Adama Diédhiou, M. Balde, Nango Gaye, M. Seck, D. Fall, A. Wélé","doi":"10.4236/jmmce.2022.102013","DOIUrl":"https://doi.org/10.4236/jmmce.2022.102013","url":null,"abstract":"This study determined mineral value and antioxidant activity of Senegal fruits for contributing to improving healthy diet and preventing some chronic diseases. Mineral element contents of Dialium guineense, Landolphia heudelotti, Mangifera indica, Cyperus esculentus and Saba senegalensis, which are widely available and consumed, were studied. The results by ICP-OES spectrophotometry after acid mineralization showed highest levels of (per 100 g fruits), calcium (158 mg), potassium (1018 mg), magnesium (532 mg), zinc (26 mg) with juice of Landolphia heudelotti fruit pulp. Mangifera indica pulp is richer in sodium (89 mg), phosphorus (556 mg), sulphur (384 mg) and silicon (110 mg). Dialium senegalensis pulp is richer in iron (23 mg) and manganese (19 mg). Lyophilized Cyperus esculentus rhizomes analyzed by atomic absorption spectrophotometry gave highest concentrations of (per 100 g fruits), calcium (2550 mg), potassium (11,843 mg) and magnesium (7669 mg) but sodium content (22 mg) is lower. In vitro antioxidant activity evaluation with the DPPH radical showed for 10 mg/ml concentration, highest inhibition percentage for Saba senegalensis 4.03%, followed by Landolphia heudelotti and Dialium guineense, which were significantly similar 2.29% and 2.20% respectively, Mangifera indica 1.7% and finally Cyperus esculentus 0.5%, but much lower compared to the ascorbic acid equal to 96.32% used as a reference.","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"150 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80385882","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 : 2022-01-01DOI: 10.4236/jmmce.2022.105031
Mengxiong Li, Qi Xu, Jianli Li
{"title":"Evolution of Nonmetallic Inclusion during Steelmaking Process of Cold Heading Steel SWRCH35K","authors":"Mengxiong Li, Qi Xu, Jianli Li","doi":"10.4236/jmmce.2022.105031","DOIUrl":"https://doi.org/10.4236/jmmce.2022.105031","url":null,"abstract":"","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86884053","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 : 2022-01-01DOI: 10.4236/jmmce.2022.102016
Lébé Prisca M.-S. Kouakou, Alfred Niamien Kouamé, Bi Irié Hervé Gouré Doubi, N. Méité, Jean Thierry Kangah, Esmel Privat Zokou, L. Konan, Y. J. Andji-Yapi
This study was carried out with a view to appreciate the value of clay, raw materials in eco-construction. To achieve this, we sampled two clay raw materials denoted Aga and Bak and then characterized. The results obtained from geotechnical and mineralogical tests have shown that the clay samples Aga and Bak are fine soils moderately plastic class A soils consisting essen-tially of quartz with 73.13% and 74.56% respectively for Aga and Bak and clay minerals (kaolinite and illite) with 12.73% kaolinite and 8.55% illite for Aga against 8.31% kaolinite and 13.72% for Bak. Moreover, these samples do not contain swelling clays and contain a sufficient quantity of iron oxides which allows them to be valued in ceramics, in particular in compressed earth bricks (CEB).
{"title":"Characterization of Two Clay Raw Materials from Côte d’Ivoire with a View to Enhancing Them in Eco-Construction","authors":"Lébé Prisca M.-S. Kouakou, Alfred Niamien Kouamé, Bi Irié Hervé Gouré Doubi, N. Méité, Jean Thierry Kangah, Esmel Privat Zokou, L. Konan, Y. J. Andji-Yapi","doi":"10.4236/jmmce.2022.102016","DOIUrl":"https://doi.org/10.4236/jmmce.2022.102016","url":null,"abstract":"This study was carried out with a view to appreciate the value of clay, raw materials in eco-construction. To achieve this, we sampled two clay raw materials denoted Aga and Bak and then characterized. The results obtained from geotechnical and mineralogical tests have shown that the clay samples Aga and Bak are fine soils moderately plastic class A soils consisting essen-tially of quartz with 73.13% and 74.56% respectively for Aga and Bak and clay minerals (kaolinite and illite) with 12.73% kaolinite and 8.55% illite for Aga against 8.31% kaolinite and 13.72% for Bak. Moreover, these samples do not contain swelling clays and contain a sufficient quantity of iron oxides which allows them to be valued in ceramics, in particular in compressed earth bricks (CEB).","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87647636","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 : 2022-01-01DOI: 10.4236/jmmce.2022.102017
D. Moreno, Y. Nahmana, O. Nafman, O. Kam, B. Wolfman, A. Cohen, M. Shapira
{"title":"Mechanical Properties, Metallurgical Characteristics and Anisotropy of Additive Manufacturing of 316L","authors":"D. Moreno, Y. Nahmana, O. Nafman, O. Kam, B. Wolfman, A. Cohen, M. Shapira","doi":"10.4236/jmmce.2022.102017","DOIUrl":"https://doi.org/10.4236/jmmce.2022.102017","url":null,"abstract":"","PeriodicalId":16488,"journal":{"name":"Journal of Minerals and Materials Characterization and Engineering","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79437106","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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