Journal Of Chemical Society Of Nigeria最新文献

SPECTROPHOTOMETRIC INVESTIGATION OF REDOX REACTION BETWEEN NAPHTHOL GREEN B AND THIOSULPHATE ION IN AQUEOUS ACID: KINETICS AND MECHANISTIC APPROACH METHOD 萘酚绿 b 与硫代硫酸根离子在水酸中氧化还原反应的分光光度法研究：动力学与机理方法

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.968

B. Myek, P. A. Anthony, I. Anweting, A. Adetoro, A. I. Anene

{"title":"SPECTROPHOTOMETRIC INVESTIGATION OF REDOX REACTION BETWEEN NAPHTHOL GREEN B AND THIOSULPHATE ION IN AQUEOUS ACID: KINETICS AND MECHANISTIC APPROACH METHOD","authors":"B. Myek, P. A. Anthony, I. Anweting, A. Adetoro, A. I. Anene","doi":"10.46602/jcsn.v49i2.968","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.968","url":null,"abstract":"The kinetics of the redox reaction of naphthol green B (here and thereafter referred to as (NGB3-) with thiosulphate ion has been studied using spectrophotometer at constant ionic strength, I = 0.50 C2mol dm-3 (NaCl), ?H+? = 1.0 ? 10-4 mol dm-3 (HCl) and T = 21 ?1?C. The redox reaction showed a stoichiometry of 2:1 and rate equation for the reaction is: -d[NGB3-]/dt = (a + b[H+])[NGB3-][S2O32-]. The rate of reaction slightly increased with increase in [H+] in the range of (0.5 – 9.0) × 10?4 mol dm?3 investigated. Changes in the ionic strength of the reaction did not affect the rate of the reaction. This showed zero BrØnsted - Debye salt effect. The reaction shows a first order dependence on [oxidant] and [reductant]. Added anion on the reaction rate does not have effect on the rate of the reaction. Michaelis – Menten’s plot of 1/k1 versus 1/ S2O32- and spectrophotometric test suggest presence of an intermediate in the rate determining step. There was evidence of gel formation by the addition of acrylamide to reaction mixture followed by excess methanol. The results obtained suggest the presence of the formation of intermediate complex. Therefore, innersphere mechanism is proposed for this reaction.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"26 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663644","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

GREEN SYNTHESIS OF TITANIUM OXIDE (TIO2) NANOPARTICLES USING Phyllanthus Niruri AND ASSESSMENT OF ITS PHYSIOCHEMICAL PARAMETERS IN WASTEWATER TREATMENT 利用 Phyllanthus Niruri 绿色合成氧化钛（TIO2）纳米颗粒并评估其在废水处理中的物理化学参数

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.965

H. Yunusa, K. I. Omoniyi, S. E. Abechi, S. D. Sani, A. O. Ugwoke, N. Imam

{"title":"GREEN SYNTHESIS OF TITANIUM OXIDE (TIO2) NANOPARTICLES USING Phyllanthus Niruri AND ASSESSMENT OF ITS PHYSIOCHEMICAL PARAMETERS IN WASTEWATER TREATMENT","authors":"H. Yunusa, K. I. Omoniyi, S. E. Abechi, S. D. Sani, A. O. Ugwoke, N. Imam","doi":"10.46602/jcsn.v49i2.965","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.965","url":null,"abstract":"This study investigates the green synthesis of titanium oxide (TiO2) nanoparticles, NPs and assessment of its physiochemical parameters in wastewater treatment. The methanol plant extract of Phyllanthus niruri was utilized for the biosynthesis of titanium oxide NPs. The preliminary phytochemical screening carried out on Phyllanthus niruri plant extract was conducted to identify the bioactive compounds such as alkaloids, flavonoids, tannins, saponins, terpenoids, anthraquinones, glycosides and steroids which may be responsible for stabilizing the nanoparticles synthesized. In the treatment of the industrial wastewater sample; the result indicated that the use of the synthesized titanium oxide nanoparticles led to percentage reduction of 67.21%, 58.96%, 91.19%, 75.56% and 94.67% for BOD, COD, turbidity, oil and grease and phosphate respectively, in the raw wastewater; and was more effective than the use of commercial titanium oxide NPs. The study indicates that synthesis of titanium oxide NPs using Phyllanthus niruri is a better alternative to chemical synthesis of NPs, the green synthesized material is eco-friendly and can serve as a treatment for industrial effluents.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"86 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140659516","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

INVESTIGATION OF CORROSION INHIBITION POTENTIAL OF HYPHAENE THEBAICA SHELLS EXTRACT ON TANNERY MACHINES PARTS IN ACIDIC MEDIUM 贝壳萃取物对酸性介质中制革机械部件缓蚀潜力的研究

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.969

N. Oladunni, I. Anweting, A. Adetoro, Y. O. Ganiyu, E. Uwaiya

{"title":"INVESTIGATION OF CORROSION INHIBITION POTENTIAL OF HYPHAENE THEBAICA SHELLS EXTRACT ON TANNERY MACHINES PARTS IN ACIDIC MEDIUM","authors":"N. Oladunni, I. Anweting, A. Adetoro, Y. O. Ganiyu, E. Uwaiya","doi":"10.46602/jcsn.v49i2.969","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.969","url":null,"abstract":"Corrosion inhibition potential of ternary machine part was investigated by using ethanoic extract of hyphaene thebaica shells as inhibitor at different temperature of 313K and 333K. The Tannery machines part which are majorly made up of mild steels are subjected to harsh conditions, which include exposure to moisture, air, acid, base, salt and other environmental components that causes corrosion on machines’ parts. The aim of this research was to generate measurable and testable data towards the control of corrosion using plant (hyphaene thebaica shells ethanolic extracts) as inhibitor. This was accomplished through the determination of inhibitor’s performance by weight loss techniques, determination of metal-inhibitor interaction mechanism using kinetic parameters and adsorption isotherms (Langmuir and Temkin), the corrosion process through the use of exposure time, phytochemicals of the shell extracts, inhibitor concentration, media concentration, temperature, initial weight of metal and the weight of the metals in every 2 hours for a total of 6 hours. A weight loss technique was adopted and the weights of the mild steel were recorded every 2 hrs for 6 hrs. The highest inhibition efficiency (78.44%) was attained at 333 K for 0.1 g/dm3 concentration of the plant inhibitor. Inhibition efficiency decreased with further increase in the temperature. The green inhibitor was found to be effective because it is ecofriendly, inexpensive and biodegradable.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"50 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140664310","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

SYNTHESIS AND CHARACTERIZATION OF CHITOSAN FROM WASTE SHELLS OF Tagelus Plebeiu OBTAINED FROM OYOROKOTOR, RIVERS STATE, NIGERIA 尼日利亚里弗斯州奥约罗科托尔获取的 Tagelus Plebeiu 废屑中壳寡糖的合成与特性分析

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.972

B. S. Nordee, T. K. J. Ideriah, C. Obunwo, G. .. Cookey

引用次数: 0

THE DESIGN AND CHARACTERIZATION OF MODIFIED POLYTHIOPHENE SUPPORTED PLANT MEDIATED CO-NI BIMETALLIC NANOCOMPOSITES 植物介导的改性聚噻吩双金属纳米复合材料的设计与表征

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.964

G. Awolola, R. O. Ayoola, O. D. Saliu, O. Oluwaniyi, O. Dosumu, O. S. Oladeji

{"title":"THE DESIGN AND CHARACTERIZATION OF MODIFIED POLYTHIOPHENE SUPPORTED PLANT MEDIATED CO-NI BIMETALLIC NANOCOMPOSITES","authors":"G. Awolola, R. O. Ayoola, O. D. Saliu, O. Oluwaniyi, O. Dosumu, O. S. Oladeji","doi":"10.46602/jcsn.v49i2.964","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.964","url":null,"abstract":"Ficus mucuso leaf extract was employed as reducing agent in the synthesis of Co-Ni bimetallic nanoparticles (BMNPs) with two precursors namely; Cobalt (ii) nitrate hexahydrate; [CO(NO3)2.6H2O] and nickel (ii) nitrate hexahydrate; [Ni (NO3)2.6H2O]. Afterwards, acid modified polythiophene was synthesized through the in-situ and ex-situ coupling approach. The nanocomposite obtained from the in-situ method was labelled ‘A’ and that of the ex-situ, ‘B’. The in-situ approach was considered to be more appropriate for synthesizing the BMNPs as confirmed by characterization using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray diffraction analysis (XRD), Energy dispersive X-ray (EDX) analysis, Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA) and Scanning electron microscopy (SEM) techniques. The hexagonal cobalt and the cubic nickel were investigated using XRD to determine the particle sizes taking Debye-Scherrer’s equation to be around 14.495nm for sample A and 15.689nm for sample B. This was reported to be responsible for the corresponding intense peak at A over B. The SEM and TEM measurements portray good correlation indicating the presence of agglomerates in sample B. The EDS analysis taken reported a higher weight of the cobalt and nickel compositions in A than in B. TGA explained the higher decomposition rate of B than A. Also, a more pronounced intense peak was observed in A than in B using FTIR technique. This comparison of both samples makes in-situ synthesis unquestionably the best because of its outstanding performance over ex-situ approach. This is the first report of Ficus Mucuso plant extract being used in nanosynthesis.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"27 26","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663503","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

CHARACTERIZATION OF FATTY ACID ETHYL ESTER BIODIESEL (CWO100) PRODUCED FROM COMPOSITE WASTE OILS, ETHANOL AND KOH 用复合废油、乙醇和甲醇生产的脂肪酸乙酯生物柴油（CWO100）的特性分析

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.966

A. G. Taiwo, O. Shoyemi, M. A. Adepoju, A. A. Ibikunle

{"title":"CHARACTERIZATION OF FATTY ACID ETHYL ESTER BIODIESEL (CWO100) PRODUCED FROM COMPOSITE WASTE OILS, ETHANOL AND KOH","authors":"A. G. Taiwo, O. Shoyemi, M. A. Adepoju, A. A. Ibikunle","doi":"10.46602/jcsn.v49i2.966","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.966","url":null,"abstract":"There is an urgent need to convert Composite waste oils (CWOs) from domestic and industrial sources using circular system thinking approach due to the growing concern of their socio-economic, environmental and governance effects and impacts of increased human anthropogenic activities. CWO was first pre-treated by sieving, heated to reduce moisture/water concentration and the acid value lowered with the addition of sufficient KOH, then base transesterification reaction with ethanol (1:1), 1% KOH at 700C for 2 h. The physio-chemical and fuel properties of the CWO100 was analyzed using standard analytical methods, and the data statistically using SPSS version 20.0. CWO100 (FAEE) has lowest value of water and sediment, acid value, free fatty acid, carbon residue and sulphur, and the highest values for viscosity, specific gravity, density, colour, flash point, iodine. Most of its parameters are within the ASTM/EN standards except in CWOs that requires pre-treatment. CWO100 is better than petroleum diesel and can be applied in diesel engines, plants with little or no modification as a major alternative now and thereafter.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"75 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140665356","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

POLYCYCLIC AROMATIC HYDROCARBON IN SEDIMENT, GROUND AND SURFACE WATER RESOURCES IN COASTAL AREAS OF ONDO STATE, NIGERIA 尼日利亚恩多州沿海地区沉积物、地下水和地表水资源中的多环芳烃

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.970

T. Akinnifesi, F. B. Borokini, A. O. Adegun, E. Mafinuyomi, A. Olonisakin, N. B. Omodara, N. A. Oladoja

{"title":"POLYCYCLIC AROMATIC HYDROCARBON IN SEDIMENT, GROUND AND SURFACE WATER RESOURCES IN COASTAL AREAS OF ONDO STATE, NIGERIA","authors":"T. Akinnifesi, F. B. Borokini, A. O. Adegun, E. Mafinuyomi, A. Olonisakin, N. B. Omodara, N. A. Oladoja","doi":"10.46602/jcsn.v49i2.970","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.970","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs) are of global concern due to their harmful effect on the health of human and the environment. They are known as persistent organic pollutants and linked to severe health effects in humans and ecosystem. This study aimed to investigate the presence and types of these hydrocarbons including assessing their distributions in groundwater water, surface water and sediment in Igbokoda, Irele and Okitipupa coastal areas of Ondo State, Nigeria. The watersamples were extracted with liquid-liquid extraction while the sediment samples were extracted with an ultrasonic bath extractor. The extracts were cleaned with alumina as adsorbent and analyzed using a gas chromatograph coupled to a mass spectrometer. The results showed wide variations in the concentrations of the analytes of interest in the different matrices studied. The total mean concentration range of these pollutants in the samples from the well, borehole, surface water, and the sediment were: 0.15 ± 0.31, 0.11±0.52 to 0.90± 0.28, 0.05±0.02 to0.11±0.52 and 0.16±0.14 to0.21±0.17, respectively. The result revealed that the concentrations of most of these contaminants were higher than the maximum permissible limit of PAH in drinking water and sediment. The contamination level was higher in the borehole water source than the others. The study concluded that all the investigated matrices were contaminated with these pollutants. The study recommended the enactment of new laws of regulating activities leading to the emissions of these pollutants by the Nigerian government inorder to safeguard the environment and human health.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"51 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662244","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

ISOLATION AND CHARACTERIZATION OF CYCLOEUCALENOL TRANSFERULATE FROM LEAVES OF Euphorbia tithymaloides 从 Euphorbia tithymaloides 叶子中分离和鉴定环桉烯醇转移物

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-24 DOI: 10.46602/jcsn.v49i2.963

J. V. Anyam, U. Suleiman, T. Tor-anyiin, J. Igoli

{"title":"ISOLATION AND CHARACTERIZATION OF CYCLOEUCALENOL TRANSFERULATE FROM LEAVES OF Euphorbia tithymaloides","authors":"J. V. Anyam, U. Suleiman, T. Tor-anyiin, J. Igoli","doi":"10.46602/jcsn.v49i2.963","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.963","url":null,"abstract":"The latex, leaves, stems, and roots of Euphorbia tithymaloides (Euphorbiaceae) have traditionally been used to treat earaches, insect stings, ringworm, toothaches, skin cancer, umbilical hernia, and warts. Approximately 1 kg of the pulverized leaves was macerated successively with hexane and ethyl acetate, and resultant Crude extracts were phytochemically screened using standard established procedures. Ethyl acetate extract was loaded onto a column containing slurry of silica gel. Gradients of hexane in ethyl acetate mobile phase were used to elute the column, affording a total of 130 fractions. Fractions 41-47 gave tiny deposit on evaporation labelled UMPT (m.p: 269-270 oC).Their thin layer chromatography gave a single spot of Rf 0.61.These were combined and labelled UMPT44. Phytochemical screening of UMPT44 gave positive test for phenols and triterpenoids. Antimicrobial screening of UMPT44 showed that it was active against some fungi and bacteria. The zone of inhibition measured 30 mm when tested against Coniophora puteana, 29 mm against methicillin-resistant Staphylococcus aureus, 27 mm against Salmonella typhi, and 26 mm against Staphylococcus aureus, Fusarium oxysporum, and Escherichia coli. Additionally, there was a 25 mm zone of inhibition against Serpula lacrymans. The determination of minimum inhibitory concentration and minimum bactericidal/fungicidal concentration indicated that UMPT44 holds promise as a potential antimicrobial agent. Based on evaluation of NMR spectral data and comparison with literature reports, UMPT44 was identified as cycloeucalenol transferulate. This is the first time this compound is isolated from the plant","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"48 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662330","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

RATE OF REACTION IN TERMS OF EXTENT (?) OR ADVANCEMENT OF THE REACTION 反应速率，即反应的程度（？

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-20 DOI: 10.46602/jcsn.v49i2.957

I. A. Akpan, N. O. Offiong, Uwem P. Akai

引用次数: 0

FABRICATION, OPTIMIZATION AND ASSESSMENT OF THE PERFORMANCE CHARACTERISTICS OF CASSAVA LOCAL VARIETY (Ighu) and Colocasia esculenta (COCOYAM) PEEL COMPOSITE BIO-SOLID FUELS CASSAVA 地方品种（Ighu）和 Colocasia esculenta（COCOYAM）果皮复合生物固体燃料的制造、优化和性能特点评估

Journal Of Chemical Society Of Nigeria Pub Date : 2024-04-20 DOI: 10.46602/jcsn.v49i2.962

N. O. Eze, F. Nworie, S. Nnamdi, T. U. Onuegbu

{"title":"FABRICATION, OPTIMIZATION AND ASSESSMENT OF THE PERFORMANCE CHARACTERISTICS OF CASSAVA LOCAL VARIETY (Ighu) and Colocasia esculenta (COCOYAM) PEEL COMPOSITE BIO-SOLID FUELS","authors":"N. O. Eze, F. Nworie, S. Nnamdi, T. U. Onuegbu","doi":"10.46602/jcsn.v49i2.962","DOIUrl":"https://doi.org/10.46602/jcsn.v49i2.962","url":null,"abstract":"The quest for briquette manufacture is increasing due to demand for a cheap and sustainable solid fuel. This study is aimed at investigating the effect of biomass residues of peels of cassava local variety (Ighu) and Colocasia esculenta (cocoyam) on the properties of coal briquettes by blending the agricultural waste with coal. In preparation of briquettes, the ratio of coal to agricultural wastes used were 100:0, 80:20, 60:40, 40:60, 20:80, 0:100. The moisture content, ash content, volatile matter, fixed carbon, calorific values of the raw materials were analyzed. The proximate, mechanical and combustion properties of the coal and bio-coal briquettes produced such as compressive strength, ignition time, moisture content, durability were also analyzed using standard methods. Comparison of the briquettes showed that the ignition time, durability, porosity index and compressive strength of the coal briquettes were enhanced by the biomass residues. The values obtained for the produced briquettes were comparable to those previously reported in literature. The optimum coal : biomass load was 60 : 40. The obtained results showed that the bio-coal briquette produced in this study were environmentally friendly and useful in real applications.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"117 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140680613","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