Pub Date : 1900-01-01DOI: 10.5220/0010132800002775
P. Rizky, .. Tamrin, .. Marpongahtun
{"title":"Synthesis of Semi Interpenetrating Polymer Network’s Hydrogel from Bacterial Cellulose","authors":"P. Rizky, .. Tamrin, .. Marpongahtun","doi":"10.5220/0010132800002775","DOIUrl":"https://doi.org/10.5220/0010132800002775","url":null,"abstract":"","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"38 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":"132818747","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: 10.5220/0010138400002775
F. F. Hadiputra, D. R. Silaban, T. Maryati
: Let 𝜒(cid:4666)𝐺(cid:4667) be a chromatic number of vertex coloring of a graph G. A bijection 𝑓: 𝐸 → (cid:4668)1,2,3, … ,|𝐸(cid:4666)𝐺(cid:4667)|(cid:4669) is called local antimagic vertex coloring if for any adjacent vertices do not share the same weight, where the weight of a vertex in 𝐺 is the sum of the label of edges incident to it. We denote the minimum number of distinct weight of vertices in 𝐺 so that the graph 𝐺 admits a local antimagic vertex coloring as 𝜒 (cid:3039)(cid:3028) (cid:4666)𝐺(cid:4667) . In this study, we established the missing value of 𝜒 (cid:3039)(cid:3028) for a case in wheel graph and 𝜒 (cid:3039)(cid:3028) for helm graph.
{"title":"Local Antimagic Vertex Coloring of Wheel Graph and Helm Graph","authors":"F. F. Hadiputra, D. R. Silaban, T. Maryati","doi":"10.5220/0010138400002775","DOIUrl":"https://doi.org/10.5220/0010138400002775","url":null,"abstract":": Let 𝜒(cid:4666)𝐺(cid:4667) be a chromatic number of vertex coloring of a graph G. A bijection 𝑓: 𝐸 → (cid:4668)1,2,3, … ,|𝐸(cid:4666)𝐺(cid:4667)|(cid:4669) is called local antimagic vertex coloring if for any adjacent vertices do not share the same weight, where the weight of a vertex in 𝐺 is the sum of the label of edges incident to it. We denote the minimum number of distinct weight of vertices in 𝐺 so that the graph 𝐺 admits a local antimagic vertex coloring as 𝜒 (cid:3039)(cid:3028) (cid:4666)𝐺(cid:4667) . In this study, we established the missing value of 𝜒 (cid:3039)(cid:3028) for a case in wheel graph and 𝜒 (cid:3039)(cid:3028) for helm graph.","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"1 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":"114299369","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: 10.5220/0010137000002775
Silvia Afriani Sitinjak, .. Andriayani
{"title":"The Effect of Methyl Oleate Variation as a Template in Synthesis of Silica Mesoporous using Tetraethylorthosolocate (TEOS)","authors":"Silvia Afriani Sitinjak, .. Andriayani","doi":"10.5220/0010137000002775","DOIUrl":"https://doi.org/10.5220/0010137000002775","url":null,"abstract":"","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"57 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":"125940704","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: 10.5220/0010133000002775
Rifqah Azzahra Naulidia, S. Handayani, S. Setiasih, S. Hudiyono
: In this study, ester synthesis from commercial oxidized ricinoleic acid using various carboxylic acid was conducted. The double bond in ricinoleic acid was oxidized using KMnO 4 in alkaline condition to form two hydroxyl groups. Oxidized ricinoleic acid was then esterified chemically using palmitic acid, decanoic acid, and butyric acid by ZnCl 2 as catalyst with the molar ratio of oxidized ricinoleic acid to carboxylic acid was 3:1. Esters produced were characterized using FTIR examined as emulsifier and the antimicrobial activity. The results showed that each ester product gave absorption band C=O ester at the range of 1600 cm -1 -1720 cm -1 . The highest conversion percentage of esterification was obtained by oxidized ricinoleic acid-palmitic acid esters with the value of 75%. Simple emulsifier test was performed for each ester and the result showed that esters were able to maintain an emulsion form approximately 24 hours with water-in-oil emulsion (w/o) type. The antimicrobial activity test of esters gave positive results in the presence of inhibition zone to the growth of Propionibacterium acnes and Staphylococcus epidermidis . The highest antimicrobial activity against P. acnes and S. epidermidis was produced by oxidized ricinoleic acid-decanoic acid esters.
本研究以工业氧化蓖麻油酸为原料，采用多种羧酸合成酯。用kmno4在碱性条件下氧化蓖麻油酸中的双键，生成两个羟基。以氯化锌为催化剂，以棕榈酸、癸酸、丁酸为原料，氧化蓖麻油酸与羧酸的摩尔比为3:1，进行化学酯化反应。用红外光谱(FTIR)对所得酯类进行了表征，并对其作为乳化剂和抗菌活性进行了研究。结果表明，各酯产物在1600 cm -1 ~ 1720 cm -1范围内具有C=O酯的吸收带。氧化蓖麻油酸-棕榈酸酯的酯化转化率最高，为75%。对每一种酯类进行了简单的乳化剂试验，结果表明，酯类在油包水(w/o)型乳化液中能保持约24小时的乳化液形态。在抑菌带存在的情况下，酯类对痤疮丙酸杆菌和表皮葡萄球菌的抑菌活性试验呈阳性。氧化蓖麻油酸-癸酸酯对痤疮链球菌和表皮葡萄球菌的抑菌活性最高。
{"title":"Synthesis of Antimicrobial and Emulsifier Compunds through Hydroxyl Group Esterification of Oxidized Ricinoleic Acid","authors":"Rifqah Azzahra Naulidia, S. Handayani, S. Setiasih, S. Hudiyono","doi":"10.5220/0010133000002775","DOIUrl":"https://doi.org/10.5220/0010133000002775","url":null,"abstract":": In this study, ester synthesis from commercial oxidized ricinoleic acid using various carboxylic acid was conducted. The double bond in ricinoleic acid was oxidized using KMnO 4 in alkaline condition to form two hydroxyl groups. Oxidized ricinoleic acid was then esterified chemically using palmitic acid, decanoic acid, and butyric acid by ZnCl 2 as catalyst with the molar ratio of oxidized ricinoleic acid to carboxylic acid was 3:1. Esters produced were characterized using FTIR examined as emulsifier and the antimicrobial activity. The results showed that each ester product gave absorption band C=O ester at the range of 1600 cm -1 -1720 cm -1 . The highest conversion percentage of esterification was obtained by oxidized ricinoleic acid-palmitic acid esters with the value of 75%. Simple emulsifier test was performed for each ester and the result showed that esters were able to maintain an emulsion form approximately 24 hours with water-in-oil emulsion (w/o) type. The antimicrobial activity test of esters gave positive results in the presence of inhibition zone to the growth of Propionibacterium acnes and Staphylococcus epidermidis . The highest antimicrobial activity against P. acnes and S. epidermidis was produced by oxidized ricinoleic acid-decanoic acid esters.","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"84 9 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":"130043202","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: 10.5220/0010139100002775
H. Br Sembiring, Mesy Jelisa
: Flavonoids included polyphenol compounds that are found in many plants which are important compounds in human food.The flavonoid group, including flavanone, flavone, dihydroflavonol, catechin, flavonol, flavan-3-ols, isoflavones, auron, anthocyanidins, proanthocyanidins and chalcones, has a general structure of C6-C3-C6. The aims of this study is to isolate and identify the group of flavonoid compound contained in rambutanbark ( Nephelium lappaceum L.). Rambutan bark powder was extracted maceration with methanol. Methanol extract was dissolved with ethyl acetate repeatedly until the solution was negative flavonoids. Ethyl acetate extract was dissolved with methanol and partitioned with n -hexane. The methanol extract which is a total of flavonoids separated by column chromatography using chloroform: methanol (90:10; 80:20 and 70:30 (v/v)). The isolates obtained were purified by preparative thin layer chromatography and producing flavonoid glycoside, yellow amorphous with Rf value of 0.25 using the chloroform: ethyl acetate eluent (50:50) v/v. The pure isolate obtained were analyzed by UV-Visible Spectropometer, FT-IR, and H-NMR. Based on the interpretation of spectroscopic data, the flavonoid compound isolated from rambutan bark wasflavonol group.
{"title":"Flavonoid Compound from Rambutan Bark (Nephelium lappaceum L.)","authors":"H. Br Sembiring, Mesy Jelisa","doi":"10.5220/0010139100002775","DOIUrl":"https://doi.org/10.5220/0010139100002775","url":null,"abstract":": Flavonoids included polyphenol compounds that are found in many plants which are important compounds in human food.The flavonoid group, including flavanone, flavone, dihydroflavonol, catechin, flavonol, flavan-3-ols, isoflavones, auron, anthocyanidins, proanthocyanidins and chalcones, has a general structure of C6-C3-C6. The aims of this study is to isolate and identify the group of flavonoid compound contained in rambutanbark ( Nephelium lappaceum L.). Rambutan bark powder was extracted maceration with methanol. Methanol extract was dissolved with ethyl acetate repeatedly until the solution was negative flavonoids. Ethyl acetate extract was dissolved with methanol and partitioned with n -hexane. The methanol extract which is a total of flavonoids separated by column chromatography using chloroform: methanol (90:10; 80:20 and 70:30 (v/v)). The isolates obtained were purified by preparative thin layer chromatography and producing flavonoid glycoside, yellow amorphous with Rf value of 0.25 using the chloroform: ethyl acetate eluent (50:50) v/v. The pure isolate obtained were analyzed by UV-Visible Spectropometer, FT-IR, and H-NMR. Based on the interpretation of spectroscopic data, the flavonoid compound isolated from rambutan bark wasflavonol group.","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"328 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":"124631056","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: 10.5220/0010137400002775
L. Chin, E. Chendra, A. Sukmana
: An investor wants the value of his or her money does not have a decline in value against inflation. For this reason, investors need to invest in financial instruments, one of which is stocks. Thus, investors need to create an optimum stock portfolio. Generally, the factors considered by investors in creating an optimum portfolio are expectations of return and portfolio risk. However, besides these two factors, the liquidity is also an important factor to be considered. These three factors will be discussed in this paper to form an optimum portfolio. In addition, because stock transactions use lot units, the optimization problem here is a mixed-integer linear programming optimization problem that will be solved using the Branch and Bound algorithm that is available in toolbox Matlab 2016. This optimization problem will be applied to the formation of a portfolio consisting of stocks in LQ45 index. The LQ45 Stock Index was chosen because shares in this index have high liquidity levels according to the Indonesia Stock Exchange. The computation results show that the portfolio rebalancing model can form a portfolio based on the level of satisfaction of investor.
{"title":"Optimum Stocks Portfolio Selection using Fuzzy Decision Theory","authors":"L. Chin, E. Chendra, A. Sukmana","doi":"10.5220/0010137400002775","DOIUrl":"https://doi.org/10.5220/0010137400002775","url":null,"abstract":": An investor wants the value of his or her money does not have a decline in value against inflation. For this reason, investors need to invest in financial instruments, one of which is stocks. Thus, investors need to create an optimum stock portfolio. Generally, the factors considered by investors in creating an optimum portfolio are expectations of return and portfolio risk. However, besides these two factors, the liquidity is also an important factor to be considered. These three factors will be discussed in this paper to form an optimum portfolio. In addition, because stock transactions use lot units, the optimization problem here is a mixed-integer linear programming optimization problem that will be solved using the Branch and Bound algorithm that is available in toolbox Matlab 2016. This optimization problem will be applied to the formation of a portfolio consisting of stocks in LQ45 index. The LQ45 Stock Index was chosen because shares in this index have high liquidity levels according to the Indonesia Stock Exchange. The computation results show that the portfolio rebalancing model can form a portfolio based on the level of satisfaction of investor.","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"10 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":"121980416","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: 10.5220/0010139500002775
Maria Agustina Kleden, Astri Atti, U. Gerardus
{"title":"The Application of Discriminant Analysis to Determine the Classifications of Human Trafficking Cases in East Nusa Tenggara (ENT) Province","authors":"Maria Agustina Kleden, Astri Atti, U. Gerardus","doi":"10.5220/0010139500002775","DOIUrl":"https://doi.org/10.5220/0010139500002775","url":null,"abstract":"","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"53 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120875468","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: 10.5220/0010205400002775
.. Sartini, Saipul Sihotang
Abstract
摘要
{"title":"Sensitivity of Colletotrichum Capsici Isolated from Chili Pepper (Capsicum annum) against Synthetic Fungicides","authors":".. Sartini, Saipul Sihotang","doi":"10.5220/0010205400002775","DOIUrl":"https://doi.org/10.5220/0010205400002775","url":null,"abstract":"Abstract","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"10 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":"126590567","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: 10.5220/0009876300002775
Yusuf Hafidh, E. Baskoro
: The properties of graph we consider are metric dimension, partition dimension, and locating-chromatic number. Infinite graphs can have either infinite or finite dimension. Some necessary conditions for an infinite graph with finite metric dimension has been studied in 2012. Infinite graphs with finite metric dimension will also have finite partition dimension and locating-chromatic number. In this paper we find a relation between the partition dimension (locating chromatic number) of an infinite tree with the metric dimensions of its special subtree. We also show that it is possible for an infinite trees with infinite metric dimension to have finite partition dimension (locating-chromatic number).
{"title":"Infinite Trees with Finite Dimensions","authors":"Yusuf Hafidh, E. Baskoro","doi":"10.5220/0009876300002775","DOIUrl":"https://doi.org/10.5220/0009876300002775","url":null,"abstract":": The properties of graph we consider are metric dimension, partition dimension, and locating-chromatic number. Infinite graphs can have either infinite or finite dimension. Some necessary conditions for an infinite graph with finite metric dimension has been studied in 2012. Infinite graphs with finite metric dimension will also have finite partition dimension and locating-chromatic number. In this paper we find a relation between the partition dimension (locating chromatic number) of an infinite tree with the metric dimensions of its special subtree. We also show that it is possible for an infinite trees with infinite metric dimension to have finite partition dimension (locating-chromatic number).","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"6 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":"126656770","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: 10.5220/0010152200002775
Junifa Layla Sihombing, .. Herlinawati, Asep Wahyu Nugraha, Ahmad Nasir Pulungan, M. Zubir, Tiamina Nasution, Ary Anggara Wibowo, S. Gea
: This research was aimed to produce biofuel fraction from rubber seed oil by using synthetic Zeolite Y (ZY), Co/ZY and CoMo/ZY catalyst. The insertion of metal used a wet impregnation method. Furthermore, in order to produce a good catalyst, the oxidation and reduction process at 500 o C using oxygen and nitrogen gases at approximately 2 hours were performed. Then, the effect of addition of ZY, Co/ZY and CoMo/ZY had been investigated at catalytic hydrocracking using metyl ester fatty acid (MEFA). The reaction was conducted at 450 o C with ratio of catalyst:feed of 1:4 and 20 mL/sec with hydrogen gas flow. Moreover, the characterization of catalyst depicted that no significant changes in wavenumber of TO4 groups and a crys-tallinity of catalyst. Then, the crystal system of ZY and Co/ZY was indicated as monoclinic while CoMo/ZY was revealed as triclinic. The surface area, pore volume and mean pore of catalysts revealed an increase trend as a result of Co and Mo impregnation. These trends have also been proven with SEM analysis which was shown an equal spreading of metals in the catalysts. Furthermore, the highest result of catalytic performance among catalysts was shown by CoMo/ZY with 59.45% of bio-gasoline. To sum up, the impregnation of Co and CoMo in Zeolit Y depicted a well-effect on its selectivity into bio-gasoline product.
{"title":"Hydrocracking of Mefa Rubber Seed Oil into Biofuels Fraction with Co and CoMo Metals Supported on Zeolite Catalyst","authors":"Junifa Layla Sihombing, .. Herlinawati, Asep Wahyu Nugraha, Ahmad Nasir Pulungan, M. Zubir, Tiamina Nasution, Ary Anggara Wibowo, S. Gea","doi":"10.5220/0010152200002775","DOIUrl":"https://doi.org/10.5220/0010152200002775","url":null,"abstract":": This research was aimed to produce biofuel fraction from rubber seed oil by using synthetic Zeolite Y (ZY), Co/ZY and CoMo/ZY catalyst. The insertion of metal used a wet impregnation method. Furthermore, in order to produce a good catalyst, the oxidation and reduction process at 500 o C using oxygen and nitrogen gases at approximately 2 hours were performed. Then, the effect of addition of ZY, Co/ZY and CoMo/ZY had been investigated at catalytic hydrocracking using metyl ester fatty acid (MEFA). The reaction was conducted at 450 o C with ratio of catalyst:feed of 1:4 and 20 mL/sec with hydrogen gas flow. Moreover, the characterization of catalyst depicted that no significant changes in wavenumber of TO4 groups and a crys-tallinity of catalyst. Then, the crystal system of ZY and Co/ZY was indicated as monoclinic while CoMo/ZY was revealed as triclinic. The surface area, pore volume and mean pore of catalysts revealed an increase trend as a result of Co and Mo impregnation. These trends have also been proven with SEM analysis which was shown an equal spreading of metals in the catalysts. Furthermore, the highest result of catalytic performance among catalysts was shown by CoMo/ZY with 59.45% of bio-gasoline. To sum up, the impregnation of Co and CoMo in Zeolit Y depicted a well-effect on its selectivity into bio-gasoline product.","PeriodicalId":257157,"journal":{"name":"Proceedings of the 1st International MIPAnet Conference on Science and Mathematics","volume":"14 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":"127914421","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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