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Cracking Optimization of Palmitic Acid Using Fe3+ Modified Natural Mordenite for Producing Aviation Fuel Compounds 用Fe3+改性天然丝光沸石优化棕榈酸裂解制备航空燃料化合物
Chemistry and Chemical Technology Pub Date : 2023-09-20 DOI: 10.23939/chcht17.03.625
Abdulloh Abdulloh, Ulfa Rahmah, Ahmadi Jaya Permana, Achmad Affan Mahdy, Titah Aldila Budiastanti, Mochamad Zakki Fahmi
{"title":"Cracking Optimization of Palmitic Acid Using Fe3+ Modified Natural Mordenite for Producing Aviation Fuel Compounds","authors":"Abdulloh Abdulloh, Ulfa Rahmah, Ahmadi Jaya Permana, Achmad Affan Mahdy, Titah Aldila Budiastanti, Mochamad Zakki Fahmi","doi":"10.23939/chcht17.03.625","DOIUrl":"https://doi.org/10.23939/chcht17.03.625","url":null,"abstract":"Natural mordenite from Turen village Malang district Indonesia has been modified to Fe3+-mordenite for heterogenous catalyst in cracking process of palmitic acid to produce Aviation fuel components. Cation exchange method has been used in mordenite modification using FeCl3. The Fe3+-mordenite was characterized by structure analysis, Fe content, Si/Al ratio, number of acid sites, pore size, pore volume, and surface area. The catalytic performances, conversion, and selectivity were measured at 583 K by GC-MS for 1, 2, and 3 hours. The high content of Fe in mordenite has larger Brønsted-Lewis’s acid site, pore volume and surface area than the natural mordenite. The crystal structure of Fe3+-mordenite is still the same with natural mordenite. The Fe3+-mordenite also has a smaller pore size than the natural mordenite. In cracking process of palmitic acid, Fe3+-mordenite performed 61.94 % of conversion and 92.90 %, which produced aviation fuel compounds, namely alkanes, alkene, cycloalkane and aromatic.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010650","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}
引用次数: 0
Application of Infrared Spectroscopy and X-Ray Powder Diffractometry for Assessment of the Qualitative Composition of Components in a Pharmaceutical Formulation 红外光谱法和x射线粉末衍射法在评价药物制剂中成分定性组成中的应用
Chemistry and Chemical Technology Pub Date : 2023-09-20 DOI: 10.23939/chcht17.03.510
Maryna Stasevych, Viktor Zvarych, Mykhailo Dronik, Martyn Sozanskyi, Semen Khomyak
{"title":"Application of Infrared Spectroscopy and X-Ray Powder Diffractometry for Assessment of the Qualitative Composition of Components in a Pharmaceutical Formulation","authors":"Maryna Stasevych, Viktor Zvarych, Mykhailo Dronik, Martyn Sozanskyi, Semen Khomyak","doi":"10.23939/chcht17.03.510","DOIUrl":"https://doi.org/10.23939/chcht17.03.510","url":null,"abstract":"A qualitative assessment of a new four-component pharmaceutical composition has been carried out using the methods of infrared spectroscopy and X-ray powder diffractometry. Qualitative characteristics for the identification of mixture components by absorption bands in infrared spectra and characteristic peaks by positions on the scattering angle 2θ scale in diffractograms were determined. It was experimentally confirmed that the quantitative content of benzocaine and procaine hydrochloride in the mixture without diclofenac sodium decreased by two times compared to their content in the mixture with it. Original infrared spectra and X-ray diffractograms of the new pharmaceutical composition with diclofenac sodium, which can be used for its identification, are presented.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135008705","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}
引用次数: 0
Influence of Potassium Humate on the Technological Aging Processes of Oxidized Petroleum Bitumen 腐植酸钾对氧化石油沥青工艺老化过程的影响
Chemistry and Chemical Technology Pub Date : 2023-09-20 DOI: 10.23939/chcht17.03.681
Myroslava Donchenko, Oleg Grynyshyn, Yuriy Demchuk, Petro Topilnytskyy, Yuriy Turba
{"title":"Influence of Potassium Humate on the Technological Aging Processes of Oxidized Petroleum Bitumen","authors":"Myroslava Donchenko, Oleg Grynyshyn, Yuriy Demchuk, Petro Topilnytskyy, Yuriy Turba","doi":"10.23939/chcht17.03.681","DOIUrl":"https://doi.org/10.23939/chcht17.03.681","url":null,"abstract":"The possibility of using potassium humate as an inhibitor of the technological aging of oxidized petro-leum bitumen has been investigated. Samples of potas-sium humate obtained from various raw materials, in particular peat and leonardite, were selected and compared. Aging coefficients have been calculated and operational properties of modified bitumen as a binding material for hot mix asphalt have been investigated. It was established that 3.0 wt. % of PH-3 added to oxidized petroleum bitumen, slows down the technological aging processes and allows obtaining asphalt concrete with better characteristics compared to the coating made on the basis of unmodified bitumen.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010645","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}
引用次数: 0
Use of Rubber Crumb Obtained from Waste Car Tires for the Production of Road Bitumen and Roofing Materials from Residues of Ukrainian Oil Processing 利用废旧汽车轮胎橡胶屑生产道路沥青和乌克兰石油加工残渣生产屋面材料
Chemistry and Chemical Technology Pub Date : 2023-09-20 DOI: 10.23939/chcht17.03.674
Andriy Nagurskyy, Oleg Grynyshyn, Yuriy Khlibyshyn, Bohdan Korchak
{"title":"Use of Rubber Crumb Obtained from Waste Car Tires for the Production of Road Bitumen and Roofing Materials from Residues of Ukrainian Oil Processing","authors":"Andriy Nagurskyy, Oleg Grynyshyn, Yuriy Khlibyshyn, Bohdan Korchak","doi":"10.23939/chcht17.03.674","DOIUrl":"https://doi.org/10.23939/chcht17.03.674","url":null,"abstract":"The process of modifying road bitumen obtained from the residues of Ukrainian oils processing with rubber crumb has been studied. The dependence of the softening temperature, ductility, penetration, and elasticity of the three-component bituminous composition “bitumen : linseed oil : rubber crumb” on its formulation has been examined. Based on the mentioned composition a new type of cold-applied bitumen roofing has been developed. A process flow diagram for the production of modified bitumen and special-purpose bituminous composition has been developed.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135008712","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}
引用次数: 0
Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite 芳脂环共聚亚胺与烷基化月脱石的组成
Chemistry and Chemical Technology Pub Date : 2023-09-20 DOI: 10.23939/chcht17.03.601
Maira Umerzakova, Talkybek Jumadilov, Ruslan Kondaurov, Rakhima Sarieva
{"title":"Compositions of Arylalicyclic Copolyimide with Alkylated Monthmorillonite","authors":"Maira Umerzakova, Talkybek Jumadilov, Ruslan Kondaurov, Rakhima Sarieva","doi":"10.23939/chcht17.03.601","DOIUrl":"https://doi.org/10.23939/chcht17.03.601","url":null,"abstract":"The results of studies on the preparation and study of the properties of composite materials based on compositions of arylalicyclic copolyimide and alkylated montmorillonite (AMM) modified with polyethylene glycol to increase the affinity of a natural mineral to polymer matrix are presented in the work. It was found that an increase in the compatibility of composition’s components is due to the addition to copolyimide solution of previously prepared mixture of alkylated montmorillonite in 5 % and 2 % polyethylene glycol solution in methylpyrrolidone. Based on IR-spectroscopy of the obtained mixtures and literature data, an assumption about specified composition mechanism was made. Compounds of copolyimide compositions with modified montmorillonite were determined. Found that the total content of alkylated montmorillonite and polyethylene glycol should not exceed 12.5 wt. % in the case of copolyimide – 1 wt. % and in case of copolyimide-2 – 4 wt. %. The optimal conditions for obtaining on their basis transparent composite films with a smooth surface by a mechanical mixing method are found. Their basic thermodestructive and mechanical properties were determined. It was shown that the materials have high thermodestructive and strength properties: the temperature of decomposition onset is 409-421°C, the tensile strength is in the range of 140-168 MPa. The best thermodestructive properties and tensile strength are possessed by films obtained from ternary mixtures of the initial composition 87.5 SPI1 + 7 PEG + 5.5 AMM and 97 SPI2 + 2 PEG + 1 AMM, while the elasticity of the material remained at an acceptable level.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135010639","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}
引用次数: 0
Basicity and Nucleophilicity Effect in Charge Transfer of AlH3-Base Adducts: Theoretical Approach 碱性和亲核性在alh3碱加合物电荷转移中的作用:理论研究
Chemistry and Chemical Technology Pub Date : 2023-06-01 DOI: 10.23939/chcht17.02.221
Mohammed Aichi, Meriem Hafied
{"title":"Basicity and Nucleophilicity Effect in Charge Transfer of AlH3-Base Adducts: Theoretical Approach","authors":"Mohammed Aichi, Meriem Hafied","doi":"10.23939/chcht17.02.221","DOIUrl":"https://doi.org/10.23939/chcht17.02.221","url":null,"abstract":"This study permits to explore the interactions involved in Lewis acid (AlH3) and Lewis bases: CO; H2O; NH3; PH3; PC13; H2S; CN–; OH–; O2–2; F–; N(CH3)3; N2; N2H4; N2H2; C5H5N; C6H5-NH2. By means of DFT theory calculations with B3LYP functional using 6-31G(d,p) basis set and in order to check the effects of both the donor and the acceptor in the establishment of the different adducts we focused mainly on the calculation of the energetic gap ∆EHOMO-LUMO, Gibbs energies ∆G, the angle (θ) in AlH3-base and the interaction energy values Einter. The several parameters of the reactivity (electrophilicity index (ω), nucleophilicity (N), chemical potential (μ), hardness (η), and polarizability (α)) are also calculated to define the weak interaction as well as to distinguish between the nucleophilicity and basicity of different Lewis bases. The results showed that the electronic charge transfer is estimated to be important in the systems where the interaction is established between Al and anionic bases, and the electron donor power is predictable for O–2, F–, OH–, and CN–. The pseudo-tetrahedral adduct arrangements depend on the parameter geometries (bond length interaction and θ angle) and Gibbs energies ∆G characterizing the main stability.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136280940","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}
引用次数: 0
Densities, Excess Volumes, and Partial Molar Volumes of Butyl Methacrylate Solutions in Some Organic Solvents 某些有机溶剂中甲基丙烯酸丁酯溶液的密度、过量体积和部分摩尔体积
Chemistry and Chemical Technology Pub Date : 2023-03-27 DOI: 10.23939/chcht17.01.001
Valentyn Serheyev
{"title":"Densities, Excess Volumes, and Partial Molar Volumes of Butyl Methacrylate Solutions in Some Organic Solvents","authors":"Valentyn Serheyev","doi":"10.23939/chcht17.01.001","DOIUrl":"https://doi.org/10.23939/chcht17.01.001","url":null,"abstract":"Densities and excess volumes of the binary systems of butyl methacrylate with acetonitrile; acetic acid, benzene, 1,2-dichlorethane, and hexane have been measured as a function of composition at 293 K and atmospheric pressure by pycnometric method. The measured excess volumes were correlated by polynomials. The partial molar volumes were calculated by experimental data.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135822433","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}
引用次数: 1
INVESTIGATION OF THE COMPOSITION AND PROPERTIES OFAKSHABULAK OIL 阿克沙布拉克油的成分和性质研究
Chemistry and Chemical Technology Pub Date : 2023-01-01 DOI: 10.52081/chchtj.2023.v02.i2.006
D.Zh Niyazova, I.D Espanova, A.A. Moldanazar, M.S. Serikbaev, M.G Bekkhozhaev
{"title":"INVESTIGATION OF THE COMPOSITION AND PROPERTIES OFAKSHABULAK OIL","authors":"D.Zh Niyazova, I.D Espanova, A.A. Moldanazar, M.S. Serikbaev, M.G Bekkhozhaev","doi":"10.52081/chchtj.2023.v02.i2.006","DOIUrl":"https://doi.org/10.52081/chchtj.2023.v02.i2.006","url":null,"abstract":"Annotation. With the help of modern methods of physico-chemical analysis, the physicochemical properties, origin and fractional compositionof the Akshabulak oil field were studied. Using adsorption column chromatography, the oil was purified from asphaltenes and resins contained in it. The full composition of oil was determined by chromatography-mass spectrometry and the content of compounds in it was calculated by internal normalization. The NIST-08 database was used as a library of Mass spectra. The origin of the oil was discovered, studied by the ratio of 2,6,10,14-tetramethylpentadecane to 2,6,10,14-tetramethylhexadecane on the obtained chromatogram. The proven oil was formed at the seabed off the coast by origin. The fractional composition of oil and the products obtained from it was studied by the method of simulated distillation. The heat of combustion of the products obtained and the octane number of gasoline obtained from oil were determined. The results obtained as a result of the study can be used in oil refining.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135801268","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}
引用次数: 0
THE PROCESS OF EPOXIDATION OF COTTONSEED OIL WITH HYDROGEN PEROXIDE 过氧化氢环氧化棉籽油的工艺研究
Chemistry and Chemical Technology Pub Date : 2023-01-01 DOI: 10.52081/chchtj.2023.v01.i1.001
R. Turmanov, I. Espanova, D.Zh. Niyazova, A.A. Moldanazar, A. Niyazbek
{"title":"THE PROCESS OF EPOXIDATION OF COTTONSEED OIL WITH HYDROGEN PEROXIDE","authors":"R. Turmanov, I. Espanova, D.Zh. Niyazova, A.A. Moldanazar, A. Niyazbek","doi":"10.52081/chchtj.2023.v01.i1.001","DOIUrl":"https://doi.org/10.52081/chchtj.2023.v01.i1.001","url":null,"abstract":"Каталитикалық комплекс сутегі пероксидті ортада аммоний вольфраматының ортофосфор қышқылымен әрекеттесуі кезінде in situ түзілді. Эпоксидтеу үрдісінде триоктилметиламмоний хлориді фазааралық тасымалдау агенті ретінде қарастырылды. Құрамында линолен қышқылы жоқ мақта майының эпоксидтенуі соя майымен салыстырғанда жоғары жылдамдықпен жүретіні көрсетілген, алынған өнімде эпоксидті оттегінің жоғары болуымен және қалдықта қанықпаған қосылыстың аз болуымен сипатталады.Вольфрам қышқылы тұздарының катионы өсімдік майының эпоксидтеу үрдісіне әсер ететіні анықталды. Аммоний вольфраматы жағдайында сутегі пероксиді жоғары жылдамдықпен жұмсалады, бұл үрдістің жоғары көрсеткіштерін сақтай отырып, каталитикалық кешен компоненттерінің мөлшерін азайтуға мүмкіндік береді. Үрдістің таңдалған оңтайлы жағдайында құрамында 6,6% эпоксидті оттегі бар және 3 г I2/100 г аз йод мөлшері бар эпоксидті мақта майы алынды, бұл коммерциялық эпоксидті соя майына қойылатын талаптарға сәйкес келеді. Фосфовольфрамат каталитикалық кешені ретінде натрий немесе аммоний вольфраматы, ортофосфор қышқылынан құралған компоненттер алынды. Фазааралық тасымалдау агенті ретінде триоктилметиламмоний хлориді қолданылды. Үрдістің жүру барысы реакция массасындағы сутегі пероксиді концентрациясының өзгеруіне байланысты бағаланды. Өнімнің сипаттамалары ТУ 0253-061-07510508-2001 нормативтік құжатына сәйкес бағаланды.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80408188","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}
引用次数: 0
RELATIONSHIP BETWEEN COORDINATION NUMBERS OF CRYSTAL LATCH PARAMETERS OF COMPLEX MIXED OXIDES 复杂混合氧化物晶体锁存参数配位数的关系
Chemistry and Chemical Technology Pub Date : 2023-01-01 DOI: 10.52081/chchtj.2023.v02.i2.007
MM Mataev,, M.A Nurbekova, Z.B Sarsenbayeva, B.B Kuandyk
{"title":"RELATIONSHIP BETWEEN COORDINATION NUMBERS OF CRYSTAL LATCH PARAMETERS OF COMPLEX MIXED OXIDES","authors":"MM Mataev,, M.A Nurbekova, Z.B Sarsenbayeva, B.B Kuandyk","doi":"10.52081/chchtj.2023.v02.i2.007","DOIUrl":"https://doi.org/10.52081/chchtj.2023.v02.i2.007","url":null,"abstract":"Күрделі аралас оксидтердің кристаллографиялық көрсеткіштерін есептеу қосылыстардың физика-химиялық қасиеттерін түсіндіреді. Кубты сингонияда кристалданған торлары бар күрделі иондық кристалдардағы иондық радиустарының олардың кристалдық тор параметрлеріне тәуелділігі зерттелді. Кристалдық тордың тұрақтылығы туралы постулатты пайдалана отырып, флюорит құрылымды кубты кристалдардағы ион радиустары мен кристалдық тордың параметрі арасындағы қатынастар тәуелділігі көрсетілді. Күрделі висмутиттердің кристаллографиялық мәндерін бастапқы оксидтердің координациялық сандары мен иондық радиустарын есептеу арқылы шешілді. Алғаш рет изоқұрылысты күрделі висмутиттер қатарының кристалдық тор параметрлерін иондық радиустер арқылы есептеуге арналған теңдеуі қорытылып шығарылды. Координациялық сандар мен элементар ұяшықтар параметрлерін тәуелділігі арқылы байланыс ұзындығы анықталып, байланыстың түзілу шегін көрсететін байланыс кернеулігі есептелген.Координациялық сандар мен элементар ұяшықтар параметрлері тәуелділігі арқылы құрамындағы байланыстардың сипаты түсіндіріліп, байланыс кернеулігі мен байланыс ұзындықтары мәндері барлық қосылыстардың кристалдық торларының толығымен түзілетіндігін дәлелденді. Кристалды заттардың құрылымының тұрақтылық шегі, олардың кристалдық тор энергиясы болып саналады, күрделі аралас висмутитердің кристалдық торлар энергиясы Грушевицкий, Капустинский, Фереман әдістерімен анықталып, иондық радиус арасындағы тәуелділік көрсетіліп, тұрақты кристалды қосылыстар екендігі анықталды. Осы есептелген кристалдық торлар мәндерінің көмегімен көпкомпонентті жүйенің термодинамикалық функцияларын бағалауға болады.","PeriodicalId":9762,"journal":{"name":"Chemistry and Chemical Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135799353","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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