Chemical Papers最新文献

{"title":"Estimation of total flavonoids, phenols, alkaloids, tannins and in vitro antioxidant activity of Costus pictus D. Don. ex. Lindl. and Dodonaea viscosa (L.) Jacq. leaf extracts","authors":"Jothi Kanmani Bharathi,&nbsp;Muthu Arjuna Samy Prakash","doi":"10.1007/s11696-024-03802-x","DOIUrl":"10.1007/s11696-024-03802-x","url":null,"abstract":"<div><p><i>Costus pictus</i> D. Don. ex. Lindl., a member of the Costaceae family, and <i>Dodonaea viscosa</i> (L.) Jacq., belongs to the family, Sapindaceae which is primarily found in tropical regions<i>.</i> Their medicinal properties are attributed to their chemical compounds, including alkaloids, flavonoids, phenols, tannins, and antioxidants, which are essential for health benefits. This study sought to assess the phytochemical and antioxidant activity of <i>C. pictus</i> and <i>D. viscosa</i> leaves that were extracted using various solvents, and the interrelation between the phytochemical and its antioxidant potential was measured. The antioxidant capacity was determined using approaches such as radical scavenging, metal chelating, and reducing power assays, since a comparative analysis employing various antioxidant evaluation methods suggests that not all adopted methods are substantially linked. Out of the seven approaches that were examined, 2,2‑diphenyl-1-picrylhydrazyl (DPPH) was found to have the highest sensitivity in this study. Methanol extracts of <i>C. pictus</i> and <i>D. viscosa</i> showed the highest antioxidant activity with lower IC₅₀ concentrations of 50.79 and 84.59 μg/ml, respectively. Moreover, similar settings were observed in other approaches that exhibit the potential of antioxidant activity. The higher association of antioxidant activity with phytochemicals such as phenols (<i>r</i> = − 0.46, − 0.45), alkaloids (<i>r</i> = − 0.79, − 0.58), tannins (<i>r</i> = − 4.22, − 0.55), and less with flavonoids (<i>r</i> = 0.25, − 0.01), respectively, in <i>C. pictus</i> and <i>D. viscosa</i> extracts was observed. However, the soxhlet extraction method produces a higher extractive yield than other methods. The results of this study suggest that <i>C. pictus</i> and <i>D. viscosa</i> could be considered capable sources of natural antioxidants and support the use of these medicinal plants to treat a variety of diseases.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"545 - 559"},"PeriodicalIF":2.2,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Degree-based topological insights and graph entropies of Kagome lattice covalent organic frameworks","authors":"Micheal Arockiaraj,&nbsp;Joseph Jency,&nbsp;Arul Jeya Shalini,&nbsp;Krishnan Balasubramanian","doi":"10.1007/s11696-024-03743-5","DOIUrl":"10.1007/s11696-024-03743-5","url":null,"abstract":"<div><p>Covalent organic frameworks (COFs) represent a class of crystalline porous materials that have captured significant interest across various fields due to their high surface area and tunable pore size. The Kagome lattice COFs are a two-dimensional network of interconnected triangles with hexagonal patterns that provide an excellent platform for designing materials with tailored porosity. We provide insights into their network connectivity through degree-based topological indices that facilitate the predictions of physicochemical properties, biological activities, and network transformations during phase transition phenomena. In this study, we analyze Kagome lattice COFs by computing their topological indices and entropies by considering three types of organic linkers using bond partitioning techniques and regression models. Furthermore, we derive quantitative expressions for topological index-based entropies to elucidate the order/disorder structural complexities of these COFs.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"135 - 157"},"PeriodicalIF":2.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antidiabetic activity of the extracted oil from an Indian indigenous plant, Amberboa ramosa: evidences from in silico, in vitro and enzyme inhibition kinetic studies","authors":"Rakesh Kumar Paul,&nbsp;Iqrar Ahmad,&nbsp;Harun Patel,&nbsp;Kaisar Raza","doi":"10.1007/s11696-024-03754-2","DOIUrl":"10.1007/s11696-024-03754-2","url":null,"abstract":"<div><p>The emergence of Type-II diabetes mellitus has created a huge epidemiological change, which led humans to think about their lifestyles and health expenditures. Currently, traditional medicines have gained importance in the improvement of lifestyle modifications. Thus, our present studies explore the antidiabetic activity of the extracted oil from the <i>Amberboa ramosa</i> plant, which is a novel approach. The present studies deal with the extraction and identification of the extracted oil and perform computational studies. In addition, DPP-IV enzymatic inhibition and kinetic studies were performed to understand the mode of inhibitions. The results demonstrated that the percentage of valeranone was more (about 15.63%) than the other identified phytocompounds. The docking studies showed binding only with valeranone in the catalytic pocket of the human DPP-IV enzyme. In the enzymatic studies, IC₅₀ was found to be 14.92 μg/ml, and from the secondary plot, the mode of inhibition was mixed. Thus, the extracted oil inhibits the DPP-IV enzyme by binding at the allosteric site.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"171 - 180"},"PeriodicalIF":2.2,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catalysts screening on production of syngas over novel cobalt-based catalysts supported with dolomite: effect of calcination temperature and Co loading","authors":"Salma Samidin,&nbsp;Arfaezah Anuar,&nbsp;G. Abdulkareem-Alsultan,&nbsp;N. Asikin-Mijan,&nbsp;Wan Nor Roslam Wan Isahak,&nbsp;Lee Hwei Voon,&nbsp;Sin Yuan Lai,&nbsp;Surahim M.,&nbsp;Salmiaton Ali,&nbsp;Mohd Razali Shamsuddin,&nbsp;Yun Hin Taufiq-Yap","doi":"10.1007/s11696-024-03795-7","DOIUrl":"10.1007/s11696-024-03795-7","url":null,"abstract":"<div><p>Dry reforming of methane (DRM) is an effective strategy for combating global warming as it utilizes two major greenhouse gases, CH₄ and CO₂, to produce syngas with a unity ratio. This syngas is ideal for various chemical processes and the synthesis of liquid fuels. Herein, this study we studied effective of DRM over cobalt (Co) supported on dolomite catalyst using varies Co loadings, ranging from 5 to 25%. Effect of calcination temperature was studied ranging 700–900 °C, and it was strongly proven that DRM efficiency proportional increased with calcination temperature due highest calcination temperature may alter the catalyst structure and affecting the absorption of H₂. Noted, rich Co species (20%) catalyst exhibited the highest conversion rates, exceeding 90% for both CH₄ and CO₂ at 900 °C with high stability, without requiring in situ hydrogen gas reduction. The presence of oxygen vacancies on the surfaces of CaO and MgO supplied oxygen atoms to the Co surface, leading to the removal of deposited carbon species and the release of CO. As a result, the 20Co900/Dol catalyst exhibits remarkable catalytic performance and stability, primarily attributable to the swift formation of a uniform alloy and the synergistic interplay between Co and CaO.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"481 - 496"},"PeriodicalIF":2.2,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Review on energy storage applications using new developments in solar photovoltaic materials and systems","authors":"Ekta Tamrakar,&nbsp;Ruchira Singla,&nbsp;R. N. Patel,&nbsp;Arun Kumar,&nbsp;Raunak kumar Tamrakar,&nbsp;Suraj Butolia","doi":"10.1007/s11696-024-03788-6","DOIUrl":"10.1007/s11696-024-03788-6","url":null,"abstract":"<div><p>Solar photovoltaic (SPV) materials and systems have increased effectiveness, affordability, and energy storage in recent years. Recent technological advances make solar photovoltaic energy generation and storage sustainable. The intermittent nature of solar energy limits its use, making energy storage systems are the best alternative for power generation. Energy storage system choice depends on electricity producing technology. The quest for sustainable energy and long-term solutions has spurred research into innovative solar photovoltaic materials. Researchers want to boost solar cell efficiency by developing new materials that turn sunlight into electricity. This report covers the latest solar photovoltaic device material research. Renewable energy sources like solar electricity are crucial to meeting rising energy needs and mitigating climate change. The use of more efficient, cheaper, and more durable materials could improve solar panel performance and photovoltaic device production. Recent solar photovoltaic material advances are examined in this paper. This study examines scalability, stability, and economic viability issues related to these materials. Novel solar photovoltaic materials could change renewable energy. Researchers and engineers have developed materials with enhanced efficiency, cost, and durability through continual study and technical breakthroughs. These materials could improve solar panel performance and help manufacture highly effective photovoltaic devices. They can significantly impact the shift to a green energy system. Before these materials can be employed on a large scale, issues of scalability, stability, environmental effect, and economic viability must be resolved. To ensure a sustainable future, materials for solar PV systems need to be further investigated and developed. Alternative energy could be generated by the use of novel materials in solar photovoltaic systems. However, further research is needed to overcome constraints and enable wider adoption of these systems.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"21 - 42"},"PeriodicalIF":2.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11696-024-03788-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the effectiveness of starch reinforcement in paper production from tropical plant fibers","authors":"Jaffur Bibi Nausheen,&nbsp;Khadoo Pratima,&nbsp;Surroop Dinesh","doi":"10.1007/s11696-024-03776-w","DOIUrl":"10.1007/s11696-024-03776-w","url":null,"abstract":"<p>Fiber derivable from plant species is a promising resource that can be employed in the paper-making sector owing to inherent properties such as environment-friendliness, renewability, and abundance as an alternative to conventional wood fiber that has been engendering adverse environmental effects. This paper aims to present an evaluation of the physical and mechanical properties of pulp and paper manufactured chemically from different biomass feedstocks such as <i>Cocos Nucifera L.</i>, <i>Furcraea Foetida,</i> and <i>Pennisetum Purpureum</i> in different ratios of 20, 60, and 100% with recycled wastepaper. Moreover, an assessment and comparison are also performed between starch-reinforced and unreinforced paper produced from the same biomasses along with 60 g/m² commercial paper to determine the feasibility of the paper to meet market demands. The samples exhibited <i>bulk densities</i> between 225 and 248 kg/m³, <i>grammage</i> between 59.5 and 69.0 g/m², <i>thickness</i> between 0.249 and 0.314 mm, and water absorption rate between 1.27 and 8.24 ± 0.5 s. It was established that the blend reinforced with starch exhibited higher strength properties whereby the tensile index lays within 2.99 to 19.3 Nm/g, burst index varied between 0.213 and 2.27 kPa m²/g and required between 18 and 125 turns to suffer a rupture. It can be determined that composite paper produced from 100% starch-reinforced as well as 100% unreinforced cocos nucifera was most suitable to be employed as writing and printing materials due to the highest values exhibited by this particular paper blend.</p>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"221 - 234"},"PeriodicalIF":2.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, morphological, and thermal properties of cellulose nanofibers extracted from waste paper","authors":"Mohammad Najafabadipoor,&nbsp;Hanie Abbaslou,&nbsp;Somayeh Bakhtiari","doi":"10.1007/s11696-024-03799-3","DOIUrl":"10.1007/s11696-024-03799-3","url":null,"abstract":"<div><p>The disposal of waste paper typically occurs through conventional garbage methods, leading to environmental pollution and the inefficient use of natural resources. This study seeks to transform these discarded materials into a valuable resource, thus mitigating a detrimental environmental impact and enhancing recycling efforts. The research employed both chemical and mechanical techniques to isolate cellulose nanofibers (CNFs) from waste paper. The papers were treated with 17.5% sodium hydroxide to remove certain minerals, followed by bleaching with sodium hypochlorite. This process effectively eliminated hemicelluloses, pectin, and lignin. Acid hydrolysis using hydrochloric acid was also performed at different concentrations, durations, and temperatures to improve treatment results. FTIR analysis showed that a sample treated with 3 M acid at 100 °C for two hours had the highest crystallization index. XRD confirmed a peak crystallinity index of 70%. SEM indicated optimal fibrillation at ambient temperature after two hours. TG analysis revealed a maximum degradation temperature of 361.6 °C, leading to 90% fiber destruction. The combination of chemical and mechanical techniques was highly effective for extracting CNFs.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"519 - 532"},"PeriodicalIF":2.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cerium oxide nanoparticles: sustainable synthesis and diverse applications in electrical properties, catalysis and biomedicine","authors":"H. S. Lalithamba,&nbsp;G. K. Prashanth,&nbsp;H. K. E. Latha,&nbsp; Rashmi,&nbsp;Aisha Siddekha,&nbsp;G. Nagendra","doi":"10.1007/s11696-024-03770-2","DOIUrl":"10.1007/s11696-024-03770-2","url":null,"abstract":"<div><p>This study presents an innovative and environmentally friendly approach for the synthesis of cerium oxide nanoparticles (CeO₂ NPs), characterized using advanced techniques such as FTIR, XRD, SEM, TEM and XPS. Notable spectral peaks at 457 cm⁻¹ and 1380 cm⁻¹ confirm the successful formation of CeO₂ NPs, with an average size of 5.72 nm and a spherical morphology revealed through XRD and SEM analysis. We explored the multifaceted applications of these synthesized NPs, particularly their impressive electrical properties and catalytic capabilities. The CeO₂ NPs demonstrated a remarkable role in synthesizing sulfides from thiols and bromoesters, which were further oxidized to sulfoxides with excellent yields using <i>m</i>-chloroperbenzoic acid (<i>m</i>-CPBA). Electrical property assessments revealed that the CeO₂ NPs exhibit insulating behavior at lower frequencies while transitioning to semiconducting characteristics at higher frequencies. Furthermore, we evaluated the cytotoxicity of the CeO₂ NPs on MCF-7 human breast cancer cells, alongside tests for biocompatibility through blood hemolysis. The NPs displayed a significant DPPH radical scavenging activity with an effective concentration of 242 μg/mL, and a safe hemolytic activity at levels below 2.5 mg/mL, indicating their potential as promising candidates in biomedical applications.</p></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"193 - 209"},"PeriodicalIF":2.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of saline water sources on the crystallographic and morphological criteria of organic-template-free eco-synthesized zeolites","authors":"Doaa M. EL-Mekkawi,&nbsp;Mohamed M. Selim","doi":"10.1007/s11696-024-03780-0","DOIUrl":"10.1007/s11696-024-03780-0","url":null,"abstract":"<div><p>This study novelly investigates the influence of saline water sources in the ecofriendly synthesis of zeolites, employing economical materials like aluminum scraps, and commercial sodium silicate, within an organic-template-free crystallization system. The type of dissolved anions significantly influences the crystallographic and morphological properties of zeolites. Initially, mordenite forms in distilled water, then transforms into P zeolite and eventually the more stable analcime phase. Saline waters significantly slowed down the phase transformation of the zeolites. At prolonged reaction time, pure analcime, exhibiting varying degrees of aggregation, was observed using distilled, tap, and synthetic saline waters containing Cl⁻ or CO₃²⁻. However, mixtures of well-defined crystals consisting of 82.3% P zeolite and 17.7% analcime, or 65.3% P zeolite and 34.7% mordenite, were obtained using waters containing SO₄²⁻ or HCO₃⁻, respectively. When Mediterranean seawater was utilized, a mixture comprising 30.9% mordenite and 69.1% analcime was produced. Conversely, the high salinity of the Red seawater impeded zeolite formation. While distilled water follows classical nucleation and layer-by-layer deposition, saline waters influenced crystallography and morphology, with anions playing a pivotal role. HCO₃⁻ suppressed transformation, while surface-adsorbed Cl⁻ and SO₄²⁻ ions facilitated reverse crystal growth mechanism akin to organic-directing agents. Preliminary tests reveal zeolites’ affinity for removing Cu²⁺ and Fe³⁺ ions, warranting further research. This study opens new avenues for sustainable materials and environmental remediation.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"283 - 301"},"PeriodicalIF":2.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-pot synthesis of zinc ferrite nanocomposite for ultrafast adsorption of Drimarene blue dye","authors":"Muhammad Saad,&nbsp;Hajira Tahir,&nbsp;Shahida Ghazala,&nbsp;Abdullah H. Alluhayb,&nbsp;Payal Kumari,&nbsp;Muhammad Tauqeer Ahmed,&nbsp;Nabeela Naeem","doi":"10.1007/s11696-024-03803-w","DOIUrl":"10.1007/s11696-024-03803-w","url":null,"abstract":"<div><p>Industrialization has not only eased human lives but also posed many problems in the modern world. About 93% of the intake water in textile industries becomes wastewater that needs to be treated to cut down the reliance on freshwater sources. In the present research, bottom-up approach was implemented to synthesize zinc ferrite nanocomposites (ZFNCs) at room temperature. The characterization was performed by FTIR, SEM, EDS, and pH_PZC. The synthesized ZFNCs served as an effective adsorbent to remove textile-colored pollutant Drimarene blue (DB) dye from the aqueous medium. The adsorptive dye removal process was aided by ultrasonic irradiation. Optimization of the adsorption process was carried out using the classical optimization method by optimizing parameters including the dosage of adsorbent, the concentration of dye, ultrasonic irradiation time, pH, and temperature. The % removal of DB by the synthesized nanocomposites under the optimized conditions was 87.67% with an adsorption capacity of 65.75 mg/g. Investigation pertaining to the adsorbate/adsorbent association was carried out by Langmuir, Freundlich, Temkin, Dubinin–Radushkevich, and Harkins–Jura models and the experimental results verified Harkins–Jura model as the best fit model. In the studies pertaining to the sorption kinetics, the pseudo-second-order model was the most appropriate model among various kinetic models. Thermodynamics assessment validated the spontaneity of the adsorption phenomenon. The process was not only thermodynamically feasible but also economical as the cost of operation was only 1.2358 USD/m³. Hence, the present investigation offers ecofriendly and affordable system for eliminating unwanted substances from polluted waterbodies.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":513,"journal":{"name":"Chemical Papers","volume":"79 1","pages":"561 - 574"},"PeriodicalIF":2.2,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}