Progress in Reaction Kinetics and Mechanism最新文献

{"title":"Study on the mechanism of hydrogen production by catalytic pyrolysis of bagasse over CaO/Na&lt;sub&gt;2&lt;/sub&gt;CO&lt;sub&gt;3&lt;/sub&gt;","authors":"Songsong Zhang, Daokuan Liang, Xiaofeng Li, Yaohui Fan, Heyi Huang, Xiao He, Lin Wang, Zhaoying Li, Yong Dong","doi":"10.48130/prkm-0025-0026","DOIUrl":"https://doi.org/10.48130/prkm-0025-0026","url":null,"abstract":"As a major type of agricultural waste, bagasse is rich in volatile matter and low in ash, making it an ideal raw material for thermochemical conversion to hydrogen-rich gas. In this study, an <italic>ex-situ</italic> microwave-assisted catalytic pyrolysis technique was used. CaO and Na₂CO₃ and their mixed catalysts in different ratios were selected for the experiments at 550 °C. The aim is to optimize both the hydrogen yield and concentration of the components to produce high-quality fuel. Thermogravimetric analysis (TG/DTG) revealed the influence of the catalysts: Na₂CO₃ significantly promotes low-temperature deoxygenation, and CaO can effectively adsorb CO₂. Molecular dynamics simulations showed that elevated temperatures promote carbon chain breakage, but too high a temperature (2,500 K) may lead to a carbonization cascade reaction, which inhibits bond breakage. The gas-phase products indicate that the mixed catalyst is most effective at a ratio of CaO : Na₂CO₃ of 1:3, achieving the highest H₂ yield (maximum 17.26%) along with significant hydrocarbon generation inhibition (24.90%), and CO content reduction (23.45%). Catalyst characterization confirmed the presence of CaCO₃ in the mixed catalysts after pyrolysis. The CaO : Na₂CO₃ = 1:3 catalyst was found to have a unique fibrous structure and a microporous network. Raman spectroscopy reveals the ordering of the carbon structure and differences in functional groups under the action of different catalysts. This study provides a theoretical basis for further optimizing the pyrolysis process of bagasse, and helps improve the conversion efficiency of biomass energy.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"51 1","pages":"0-0"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.maxapress.com/data/article/opr/preview/pdf/prkm-0025-0026.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919592","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":"Elucidating the recombination kinetics of 2-naphthyl radicals with phenylacetylene","authors":"Ting Yang, Dezhi Wang, Zhiyao Zhang, Lili Ye","doi":"10.48130/prkm-0025-0012","DOIUrl":"https://doi.org/10.48130/prkm-0025-0012","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs) serve as critical precursors in soot formation, and understanding their formation mechanisms is fundamental for controlling pollutant emissions during the combustion of carbonaceous fuels, such as petrochemical derivatives. This study combines experimental and theoretical techniques to explore the radical-molecule reactions of 2-naphthyl radicals with phenylacetylene (also known as ethynylbenzene), which is potentially a ring-growth pathway for 2-naphthyl. The potential-energy profile was investigated at B2PLYP-D3/def2-TZVPP//M06-2X/6-311+G(d,p) level of theory. Temperature- and pressure-dependent (500–2,500 K and 3–7,600 Torr) rate constants were obtained from RRKM/master-equation simulations. Although the 2-naphthyl radical can add to multiple sites on phenylacetylene, the kinetics is overwhelmingly governed by the addition of the terminal acetylene carbon (β-carbon). At 760 Torr, the stabilization of initial activated adduct into 2-styrylnaphthalene radical prevails below 1,300 K, while the formally-direct channel producing 2-phenylethynyl-naphthalene and H becomes favorable above 1,300 K. For subsequent reaction of 2-styrylnaphthalene radical (i.e., the initial adduct), the sequential isomerization reactions via intramolecular hydrogen transfer dominate at low temperature, whereas the C-H β-scission to form 2-phenylethynyl-naphthalene and H becomes prominent at high temperature. The synchrotron vacuum ultraviolet photoionization molecular beam mass spectrometry experiment indicates a mass peak <italic>m</italic>/<italic>z</italic> 228 from the reaction between 2-naphthyl and phenylacetylene with a photon energy of 9.5 eV. Based on experimental measurements and kinetic analysis, the <italic>m</italic>/<italic>z</italic> 228 peak is deduced to be 2-phenylethynyl-naphthalene. Kinetic analysis of three aryl radicals (i.e., phenyl, 1-naphthyl, and 2-naphthyl) with phenylacetylene reveals that 1-naphthyl, which features a 'zigzag' edge site, exhibits higher reactivity compared to phenyl and 2-naphthyl radicals, both of which possess 'free' edge sites (the phenyl/phenylacetylene and 1-naphthyl/phenylacetylene reactions were studied in <italic>Combustion and Flame</italic>, 2022, 243, 112,014 and <italic>Journal of the American Chemical Society</italic>, 2021, 143, 20,710, respectively). This trend holds across a wide temperature range, except at the very high-temperature end. These findings significantly deepen our understanding of the formation and growth mechanisms of PAHs in combustion systems, providing critical insights into the chemical behavior of aryl radicals and their contributions to the formation and evolution of PAHs.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"50 1","pages":"0-0"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.maxapress.com/data/article/opr/preview/pdf/prkm-0025-0012.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333594","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":"Experimental and kinetic modeling studies on the low-temperature oxidation of &lt;i&gt;n&lt;/i&gt;-heptanol in a jet-stirred reactor","authors":"Jinglan Wang, Zhiwu Xu, Zhanjun Cheng, Boyi Sun, Xuezhi Gao, Zhandong Wang, Jiuzhong Yang, Beibei Yan, Guanyi Chen","doi":"10.48130/prkm-0025-0024","DOIUrl":"https://doi.org/10.48130/prkm-0025-0024","url":null,"abstract":"Alcohols, primarily produced from biomass, are considered promising, both as alternative fuels and as fuel additives. However, short-chain alcohols suffer from low calorific value, corrosion, and hygroscopicity. In contrast, long-chain alcohols are better candidates as their physical and chemical properties closely match diesel, enabling direct use in engines. <italic>n</italic>-Heptanol is a potential long-chain alcohol and exhibits excellent combustion characteristics and significantly low-temperature reactivity. To facilitate engine application and enhance the understanding of <italic>n</italic>-heptanol combustion, its low-temperature oxidation was investigated in a jet-stirred reactor across equivalence ratios of 0.5, 1.0, and 2.0, within the temperature range 550–880 K, at atmospheric pressure. Synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) identified approximately 29 oxidation species (including aldehydes, alkenes, water, etc.), and quantified their mole fraction profiles. An obvious negative temperature coefficient was observed in <italic>n</italic>-heptanol oxidation at the equivalence ratios of 0.5 and 1.0. A detailed kinetic model for <italic>n</italic>-heptanol oxidation was developed based on the Togbé model of <italic>n</italic>-hexanol oxidation. The results indicated that the proposed model can well reproduce the <italic>n</italic>-heptanol oxidation experiments. Rate of product (ROP) analysis revealed that the H-abstraction by OH radicals, forming fuel radicals, was the dominant pathway for <italic>n</italic>-heptanol consumption. Subsequently, fuel radicals predominantly underwent decomposition through the first O₂-addition, H-abstraction, and bond dissociation reactions. Furthermore, this study identified the source of aldehydes and alkenes, such as heptanal, hexanal, 1-heptene, 1-hexene, etc., as products of O₂-addition reactions on fuel radicals. These findings contribute significantly to a deeper understanding of the oxidative behavior of long-chain alcohol fuels.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"50 1","pages":"0-0"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.maxapress.com/data/article/opr/preview/pdf/prkm-0025-0024.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919044","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":"Understanding the rate-limiting step adsorption kinetics onto biomaterials for mechanism adsorption control","authors":"Sahmoune Mohamed Nasser, M. Abbas, Mohamed Trari","doi":"10.1177/14686783241226858","DOIUrl":"https://doi.org/10.1177/14686783241226858","url":null,"abstract":"Biomaterials are a class of porous materials that have been widely exploited over the past two decades. However, the implications of controlling adsorption by rate-limiting steps are still not adequately established. Identifying the rate-limiting step is a promising approach for the design of adsorption systems. In this review, we study in detail the rate-limiting step of the adsorption of dyes in aqueous media on biomaterials to rationalize the factors governing the rate-limiting step involved in the adsorption process using empirical kinetics and mass transfer models. This knowledge is then applied to identify the best fit of these models to study the rate-controlling step involved in the adsorption process, which is crucial for the design of the adsorption system. This review first studies the limiting step of adsorption of dyes in an aqueous medium on biomaterials. Kinetic modeling is used to better understand the rate control step involved in biosorption. Generally, the equations used are empirical models of kinetics and mass transfer and the biomaterials come from the following categories: agricultural and industrial waste, algae, fungi, bacteria, and plants. In most adsorption studies reported in this review, the pseudo second-order model was found to be best suited for fitting the kinetic data of dyes on biomaterials, indicating that chemisorption is the rate-limiting step that controls adsorption. Concerning the diffusion effects of mass transfer, intraparticle diffusion is among the most often used models to examine the rate-limiting step which is controlled by both film diffusion and intraparticle diffusion. The first takes place when the external transfer is greater than the internal transfer while the opposite occurs in the case of porous diffusion. However, the majority of works do not study the real step of controlling the overall adsorption kinetics, namely, film diffusion or intraparticle diffusion.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"16 12","pages":""},"PeriodicalIF":0.7,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139455314","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":"Entropy controlled reaction of piperidine with isatin derivatives in 80% aqueous methanol","authors":"Mohamed A El-Rahman, Mahmoud F. Ibrahim, M. F. Fathalla, S. El-Sadany, Ezzat A. Hamed, A. Z. Omar","doi":"10.1177/14686783231218882","DOIUrl":"https://doi.org/10.1177/14686783231218882","url":null,"abstract":"The reactions of 5- and 7-substituted isatin derivatives (H, Me, Cl, Br) with piperidine in 80% aqueous methanol gave the corresponding 1-(2’-amino-5’- or 3’- substituted phenyl)-2-(piperidin-1-yl) ethane-1,2-dione derivatives. The reaction is proceeded through nucleophilic attack on C-2 followed by ring opening process. The reaction showed a second order and the isokinetic temperature is 169 K indicating that the reaction is entropy controlled. The constant ∆G# value, the linear plot of ∆H# versus ∆S#, plot of log kN values at high temperature versus those at low temperatures indicated that a unified mechanism of the reactions for all substituents. The σo-Taft's constants are linearly correlated with log kN values and the ρ values are (2.01–1.86) pointing out that inductive effect of substituent is predominant and the rate-limiting is the breakdown of the tetrahedral intermediate T− and the ring opening is catalyzed by water.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"108 ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139025215","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":"Kinetics and mechanism of the oxidation of furfural by benzimidazolium dichromate under non aqueous medium","authors":"R. Kalal, D. Panday","doi":"10.1177/14686783211045815","DOIUrl":"https://doi.org/10.1177/14686783211045815","url":null,"abstract":"The oxidation of furfural (2-furaldehyde), by benzimidazolium dichromate (BIDC) in dimethyl sulfoxide, leads to the formation of 2-furoic acid. The reaction is first order with respect to BIDC and hydrogen-ion. However, Michaelis–Menten type kinetics was observed with respect to furfural. The formation constants of furfural-BIDC complexes and the rates of their decomposition have been evaluated at different temperatures. Thermodynamic parameters of the complex formation and activation parameters for the decomposition of the complexes have been calculated. The deuterium isotope effect observed in the oxidation of furfural (kH/kD = 6.23 at 298 K) indicated an α-C-H bond cleavage in the rate-determining step. The reaction has been studied in 19 organic solvents. The analysis of the solvent effect showed that the role of cation-solvation is major. Based on the kinetic data, analysis of the solvent effect and the result of some non-kinetic parameters, a mechanism involving rate-determining oxidative decomposition of the complex, through hydride-ion transfer via a cyclic transition state, to give the corresponding product is suggested.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"229 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73952750","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":"Two coordination polymers: Crystal structures, prevention and nursing values on postoperative infection","authors":"Meng Ding, Fan Yang, Q. Lv, Qiongfang Liu","doi":"10.1177/14686783221090376","DOIUrl":"https://doi.org/10.1177/14686783221090376","url":null,"abstract":"In this current work, two fresh transition metal coordination polymers (CPs) have been created with the reaction between terphenyl-3,3″,5,5″-tetracarboxylic acid (H4L), the symmetrical rigid carboxylic acid ligand and the relevant metal salts under the reaction conditions of solvothermal, and the chemical compositions of the compounds respectively are {[Cu2(TPTC) (DMF)2(H2O)]·2DMF·2H2O} (2) and {[Zn (TPTC) (1,2-bimb)2]·4(H2O)}n (1, bimb = 1,2-bis((1H-imidazol-1-yl)methyl)benzene). Moreover, the prevention and nursing values of the compound on postoperative infection was explored and their corresponding mechanism also was investigated. Firstly, enzyme linked immunosorbent assay kit (ELISA) was employed to detect the release of inflammatory cytokines into plasma. Additionally, the expression of the bacterial survival genes was determined via exploiting the real time reverse transcription-polymerase chain reaction (RT-PCR) after treated with the compound.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"77 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83307390","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":"Melting aspects in flow of second grade nanomaterial with homogeneous–heterogeneous reactions and irreversibility phenomenon: A residual error analysis","authors":"F. Alzahrani, Muhammad Ijaz Khan","doi":"10.1177/14686783221090374","DOIUrl":"https://doi.org/10.1177/14686783221090374","url":null,"abstract":"Here, we scrutinize the entropy analysis in magnetohydrodynamic flow of second-grade nanomaterials with melting effect subject to stretchable bended surface. Heat attribution is modeled through first law of thermodynamics with radiation effect. Major physical effect of random and thermophoretic motion is also addressed. Feature of irreversibility (entropy rate) analysis is also discussed. Isothermal cubic autocatalyses chemical reaction at catalytic surface is discussed. Nonlinear dimensionless differential system is developed through adequate transformation. Optimal homeotypic analysis method (OHAM) is employed to construct convergent solution. Influence of physical variables on entropy rate, fluid flow, concentration, and thermal field is discussed. An augmentation in fluid flow is noticed through curvature variable, while reverse effect holds for magnetic variable. A reverse effect holds for fluid flow and thermal field through melting variable. Entropy analysis is augmented with variation in melting variable. Reduction occurs in concentration through thermophoretic variable, while an opposite effect holds for thermal field. An increment in melting variable leads to reduced concentration. Larger estimation of radiation variable improves entropy analysis.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"36 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75896975","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":"A new mixed-ligand Mn(II) coordination polymer: Protective and nursing values on renal calculus via reducing the Ca2+ concentration in urine","authors":"Yan Yang, Shenmin Zhang, Yi-Qian Zhang, Liang Chen, Tao Xiong","doi":"10.1177/14686783221090373","DOIUrl":"https://doi.org/10.1177/14686783221090373","url":null,"abstract":"In the present study, via using the mixed-ligand synthesis approach, a new Mn(II)-containing coordination polymer (CP) with the chemical formula of {[Mn3(timb)2(SO3–IPA)2(H2O)2]·8H2O} n (1) has been successfully prepared via reaction of MnCl2·4H2O with the tripodal linker 1,3,5-tris(2-methylimidazole-1-yl)benzene (timb) and aromatic dicarboxylic acid ligand –SO3 group functionalized isophthalic acid (H2IPA) ligand. Furthermore, the biological activity of the new compound on renal calculus was assessed, and the related mechanism was explored as well. The Calcium Colorimetric Assay was conducted and the concentration of Ca2+ in urine was determined. The western blotting assay was conducted and the expression levels of the osteopontin (OPN) in the distal tubule were measured. Molecular docking simulation revealed that the carboxyl, iminazole, and sulfonate groups were all involving into the binding interactions with the target protein, and therefore exhibited strong biological activity.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"73 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86143552","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":"Effect of nano bentonite on direct yellow 50 dye removal; Adsorption isotherm, kinetic analysis, and thermodynamic behavior","authors":"A. Mahmoud","doi":"10.1177/14686783221090377","DOIUrl":"https://doi.org/10.1177/14686783221090377","url":null,"abstract":"Developing countries suffering from the toxicity of different industrial effluents especially dyes. This study successfully prepared and characterized nano-bentonite for anionic dye removal (DY 50). The prepared nanoparticles were characterized by X-Ray Diffraction (XRD), X-ray Fluorescence (XRF), Scanning Electron Microscope (SEM), EDAX analysis, FT-IR, and TGA and the obtained results indicated the formation of nanoparticles with an average size of 15 nm. The effect of different operating conditions was studied using different pH, dose, contact time, temperature, and initial DY 50 concentrations. The obtained results indicated that nano bentonite was able to adsorb about 78.3 and 100% for initial concentrations of 100±8.1 and 20 ±1.62 mg/L, respectively. The optimum removal conditions were observed at acidic media (pH 3) using sorbent material dosage 1 g/L for 45 min and 30°C. The adsorption isotherm, kinetic analysis, and thermodynamic behavior were studied by using linear equation form, and the adjusted R2 was compared to detect the preferred models. The adsorption isotherm indicated that heterogeneous, as well as multilayer adsorption, plays an important role in the removal of dye. Kinetic studies indicated the chemisorption interaction between sorbed and adsorbed molecules. Thermodynamic behavior indicated the reaction is exothermic with ∆H equal to −5.24 KJ/mol and ∆S equal −74.2 J/K.mol. Finally, this study strongly recommended using nano bentonite for DY 50 removal from an aqueous solution. The RSM relations show significant relations in all removal models with p-value <0.001. The ANN results indicated that the most effective operating conditions are the effect of nano bentonite dose followed by the pH effect.","PeriodicalId":20859,"journal":{"name":"Progress in Reaction Kinetics and Mechanism","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89901066","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}