Journal of Thermal Analysis and Calorimetry最新文献

{"title":"Thermo-economic performance analysis of green silver nanofluid prepared by using Limonia acidissima seeds and Mangifera indica seeds extract","authors":"Jyoti Gupta,&nbsp;Brijesh Kumar Pandey,&nbsp;D. K. Dwivedi,&nbsp;Saurav Mishra","doi":"10.1007/s10973-024-13957-0","DOIUrl":"10.1007/s10973-024-13957-0","url":null,"abstract":"<div><p>Our current study aims to promote the green synthesis of nanoparticles (NPs) and subsequently the production of nanofluids (NFs) using appropriate combinations of base fluids. The ultrasonic velocity of these NFs was measured using a highly efficient thermal conductivity apparatus. Additionally, we utilized Bridgman’s equation to calculate the thermal conductivity of NFs. Silver NFs synthesized with <i>Limonia acidissima</i> seeds extract exhibited significantly higher thermal conductivity (171%) compared to those synthesized with <i>Mangifera indica</i> seed extract and chemically synthesized silver NFs. This enhanced thermal conductivity can be attributed to the smaller size and nanocubic shapes, which provide a larger surface area for heat conduction. The green synthesis of silver NPs offers several advantages for thermal applications, as they are devoid of harmful chemicals, and the organic capping agent can be easily removed at low temperatures to ensure metallic continuity for effective heat conduction. This study endeavours to determine the optimal combination of base fluid and green-synthesized Ag NPs for enhancing heat transfer in photovoltaic (PVT) applications.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"2025 - 2045"},"PeriodicalIF":3.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-history method for characterizing thermophysical properties of phase change materials: a critical review","authors":"Rohitash Kumar,&nbsp;Swarnima Singh,&nbsp;Ambesh Dixit","doi":"10.1007/s10973-024-13874-2","DOIUrl":"10.1007/s10973-024-13874-2","url":null,"abstract":"<div><p>Phase change materials are widely used for thermal energy storage media for different thermal energy storage applications ranging from building heating and cooling, transportation of heat-sensitive products, electronic cooling, solar water heaters, and waste heat recovery to concentrating solar power plants for their enhanced performance and efficiency. The precise measurement of thermophysical properties is essential for these phase change materials to design efficient thermal systems. The temperature-history (T-history) method has advantages over techniques like differential scanning calorimetry and differential thermal analysis, allowing for the evaluation of properties such as enthalpy, latent heat of fusion, solid and liquid phase specific heat, useful enthalpy in working temperature range, supercooling, and thermal stability. Despite its effectiveness, T-history remains laboratory-based, with no commercial system available, highlighting the need for advancements in experimental setups and analysis protocols since its inception.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1445 - 1475"},"PeriodicalIF":3.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive thermo-economic assessment of an integrated poly-generation plant powered by biomass and natural gas","authors":"Mortaza Shariati,&nbsp;Hadi Ghaebi,&nbsp;Hiva Rashidzadeh,&nbsp;Alireza Rostamzadeh Khosroshahi","doi":"10.1007/s10973-024-13846-6","DOIUrl":"10.1007/s10973-024-13846-6","url":null,"abstract":"<div><p>In response to the growing demand for sustainable energy solutions, this study introduces a novel poly-generation energy plant that integrates biomass and natural gas to produce electricity, hot water, and cooling loads. The primary objective of this research is to evaluate the thermo-economic performance of the proposed system through an exergo-economic analysis using the SPECO approach. This innovative system uniquely combines a double-effect absorption refrigeration cycle, a gasifier unit, a biomass burner unit, and a supercritical carbon dioxide cycle, contributing to enhanced energy efficiency and sustainability. Key findings revealed a net output power of 7.422 MW, an exergy unit cost of 14.8 $ GJ^-1, and an exergy efficiency of 35%. The gasifier was identified as a significant source of irreversibility, with notable exergy destruction occurring within its unit. Furthermore, the sensitivity analysis demonstrated that variations in combustion pressure positively impacted the reduction of the cost per exergy unit across all products. This research provides valuable insights into the optimization of poly-generation systems, paving the way for improved energy efficiency and reduced environmental impact in integrated energy practices.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1983 - 1998"},"PeriodicalIF":3.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Greener reprocessing of medical plastic waste through fuel conversion and enhancing its energy and environmental metrics along with economic assessment","authors":"Suresh Vellaiyan","doi":"10.1007/s10973-024-13971-2","DOIUrl":"10.1007/s10973-024-13971-2","url":null,"abstract":"<div><p>The epidemic has driven a surge in demand for plastic-based personal protective equipment (PPE) kits in healthcare, creating environmental and health risks from discarded PPE waste. This study addresses these issues by converting PPE robes into energy through pyrolysis, producing plastic pyrolysis fuel (PPF) for use in diesel engines. The physicochemical properties of PPF were analyzed, and PPF-diesel blends (10%, 20%, and 30%) were tested alongside neat diesel fuel (NDF) in a single-cylinder diesel engine under varied brake-mean effective pressure (BMEP) conditions. Results show that adding PPF reduces in-cylinder pressure (ICP), heat release rate (HRR), and brake thermal efficiency (BTE). A 30% PPF blend increases brake-specific fuel consumption (BSFC), hydrocarbon (HC), carbon monoxide (CO), and smoke emissions by 13.8%, 23.3%, 10.5%, and 4.5%, respectively, while reducing NOx emissions by 5.5%. To enhance combustion performance and emissions, a water emulsion was added to the NDF + PPF mixture, incorporating 5% and 10% water with 30% PPF. This approach improved engine performance, increasing BTE by 10.8% and reducing HC, CO, NOx, and smoke emissions by 22.3%, 15.9%, 10.3%, and 6.2%, respectively. Cost–benefit analysis shows that water-emulsified PPF-diesel fuel achieves comparable engine performance to NDF while reducing operating costs by 19.1%.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1585 - 1598"},"PeriodicalIF":3.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reactivity of belite in calcium sulfoaluminate-based cements","authors":"Raquel Pérez-Bravo,&nbsp;Imane Koufany,&nbsp;Ana Cuesta,&nbsp;Eric P. Bescher,&nbsp;Miguel A. G. Aranda,&nbsp;Isabel Santacruz,&nbsp;Angeles G. De la Torre","doi":"10.1007/s10973-024-13933-8","DOIUrl":"10.1007/s10973-024-13933-8","url":null,"abstract":"<div><p>The hydration behavior of belite phase in different cements is not well understood. Belite hydrates very slowly but there are reports with faster hydration kinetics. Here, the hydration behavior of belite phase in a commercial belite calcium sulfoaluminate (BCSA) cement has been investigated. The BCSA cement was hydrated with two water-to-cement ratios, 0.50 and 0.65 and at two temperatures, 20 and 40 °C. Studies of calorimetry, NMR, laboratory X-ray powder diffraction (XRPD), thermal analysis (TA) of the pastes, and mass balance calculations have been performed. The calorimetric and LXRPD studies showed that with sufficient water for the hydration reactions to take place, i.e., <i>w</i>/<i>c</i> = 0.65, the degree of reaction of belite is 30% at 7 days and above 60% at 35 days, at 40 °C. The ²⁹Si and ²⁷Al MAS-NMR and TA studies confirmed the reactivity of belite under conditions of sufficient water (thermodynamic requirement) and at high temperature (kinetic requirement). This was demonstrated by the presence of stratlingite by ²⁷Al MAS-NMR and TA. Finally, it was found that ~ 12 mass% of the added water remains unbound, but it is unavailable for the progression of hydration reactions in the studied experimental conditions.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1533 - 1544"},"PeriodicalIF":3.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10973-024-13933-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of heat transfer in bi-directional flow of sodium alginate-based ternary hybrid nanofluid over an extending heated surface with velocity slip conditions","authors":"Showkat Ahmad Lone,&nbsp;Laila A. AL-Essa,&nbsp;Fuad S. Alduais,&nbsp;Afrah Al-Bossly,&nbsp;Abdullah Dawar,&nbsp;Anwar Saeed","doi":"10.1007/s10973-024-13872-4","DOIUrl":"10.1007/s10973-024-13872-4","url":null,"abstract":"<div><p>The analysis of three-dimensional trihybrid nanofluid flow on a stretchable sheet using variable porous medium and diverse nanoparticles (Cu, CuO, Al₂O₃) in a sodium alginate base fluid has many applications in augmenting thermal transfer processes across numerous engineering systems like optimization of thermal management in electronic components, industrial heat exchangers and energy conversion systems. The inclusion of velocity slips and convective heat transfer has many applications in advanced thermal systems in aerospace, renewable energy and automotive sectors efficient heat dissipation in critical. Therefore, in this article, three-dimensional flows of a ternary hybrid nanofluid flow on a stretchable sheet using variable permeable medium. The velocity slip conditions along with convective thermal transportation are also considered in this article along with thermal radiation and heat source. The present analysis is endorsed with the earlier published results by which the validation of present model and applied technique are confirmed. The results of the current investigation demonstrate that a higher magnetic factor boosted the thermal distribution, while reducing the primary and secondary velocity distributions. A higher Casson factor improved both the primary and secondary velocities. Higher velocity slip factors lowered the primary and secondary velocities. The increased thermal Biot number, thermal radiation parameter improved thermal dispersion. The greater the thermal Biot number, radiative and heat source factors, the higher the thermal transfer rate.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1545 - 1556"},"PeriodicalIF":3.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical exploration of thermal dispersion effect on non-Darcian flow of nanofluid along convectively heated truncated cone","authors":"Venkatarao Chukka,&nbsp;Naveen Padigepati,&nbsp;RamReddy Chitteti","doi":"10.1007/s10973-024-13870-6","DOIUrl":"10.1007/s10973-024-13870-6","url":null,"abstract":"<div><p>The present article examines the mixed convective flow of a nanofluid across a truncated cone immersed in a porous media, considering the convective thermal condition (CTC) and the thermal dispersion (TD) effect. The mathematical framework utilized in this investigation is based on Bungiorno’s nanofluid model. Given the intricacy of this flow problem, similar solutions are not applicable. So, non-similar transformations are chosen to non-dimensionalize the equations that govern the nanofluid flow. An efficient Chebyshev spectral collocation method (CSCM) is deployed post-local linearization to tackle the resultant linearized partial differential equations system. By evaluating residual norms, the applied numerical technique CSCM is demonstrated in terms of validity and convergence. The study also examines the impact of flow-influenced factors on temperature, velocity, volume fraction, heat transfer rate, nanoparticle mass transfer rate, streamlines, and isotherms. The heat transfer rate increases with larger thermal dispersion factors under assisting and opposing flow circumstances. This numerical study helps to understand how flow dynamics and thermal behaviour around the truncated cone are affected under the influence of nanofluid flow for different flow conditions. A detailed discussion of the present problems provides guidelines for future experimental and computational research to develop an improved system design when applied to heat and mass transfer industries.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1831 - 1849"},"PeriodicalIF":3.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation of various training functions using ANN to predict the thermal conductivity of EG/water-based GNP/CNC hybrid nanofluid for heat transfer application","authors":"Md. Munirul Hasan,&nbsp;Md Mustafizur Rahman,&nbsp;Suraya Abu Bakar,&nbsp;Muhammad Nomani Kabir,&nbsp;Devarajan Ramasamy,&nbsp;A. H. M. Saifullah Sadi","doi":"10.1007/s10973-024-13873-3","DOIUrl":"10.1007/s10973-024-13873-3","url":null,"abstract":"<div><p>Thermal management efficiency is still a significant problem in many industries and techniques due to the ultimate limitations in the performance of conventional heat transfer fluids. The present research focuses on predicting the thermophysical properties of hybrid graphene nanoplatelet (GNP) and cellulose nanocrystal (CNC) nanoparticles to improve the thermal performance of heat transfer systems. Resolving the thermal management issues can be critical for saving energy, enhancing the effectiveness of the systems, and advancing the existing and emerging technologies needed to handle high temperatures. GNP-CNC/ethylene glycol–water hybrid nanofluids were prepared in volume concentrations from 0.01 to 0.2%. Thermal conductivity was measured from 30 to 80 °C, providing comprehensive data for analysis. The most important resolution was formulated at 0.1% volume concentration within a 60:40 volume ratio of ethylene glycol and water, with UV–Vis analysis showing absorption peaks in the highest order at 0.10% and 0.2% concentrations. Thermogravimetric analysis has shown an increase towards thermal resilience, with the mass decline beginning at 130 °C and full degradation at 500 °C. An interesting observation was invested for 0.20% GNP: CNC, where the onset of degradation occurred at 150 °C, providing an increased variety of potential high temperatures. An artificial neural network (ANN) model was implemented to predict thermal conductivity, and 15 training functions were examined for the ANN structure. The model's best prediction results were obtained by utilizing tansig and Purlin transfer functions in a single hidden layer with ten neurons, which employed the Bayesian regularization function. It reached <i>R</i>² = 99.99%, MSE = 4.8352 × 10⁻⁷, and RMSE = 1.2083 × 10⁻³, which is superior to other functions, e.g. trainlm. The novelty is successfully synthesizing a stable GNP-CNC hybrid nanofluid with excellent thermophysical properties and establishing a highly accurate predictive model. The impact could be widespread in various industries, from better cooling to more efficient energy systems, and even the applicability of this effect in improving industrial processes.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1907 - 1932"},"PeriodicalIF":3.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calorimetric approach for the evaluation of chocolate anti-blooming agents’ potentialities following the cocoa butter/milk fat paradigm","authors":"Francesca Saitta,&nbsp;Enrico Mangano,&nbsp;Marco Signorelli,&nbsp;Dimitrios Fessas","doi":"10.1007/s10973-024-13955-2","DOIUrl":"10.1007/s10973-024-13955-2","url":null,"abstract":"<div><p>The crystallization properties of cocoa butter, milk fat and cocoa butter/milk fat blend 80:20%w/w were explored by means of DSC investigations after rests at different temperature to set up a calorimetric methodology/protocol that leads to a quantitative assessment of the early-stage overall crystallinity in cocoa butter/added fat blends, discriminating the constituent contributions. This quantification is crucial since it is correlated with the early structural state of the matrix in terms of pores and cracks, that is one of the factors that determines the time associated with the blooming onset in chocolate products, and can be used to assess the potentiality of an added fat as a promising anti-blooming agent. Deconvolution and normalization procedures were applied to the DSC curves to obtain the crystallinity evolution for both cocoa butter and milk fat plain systems, which was used to define the degree of crystallinity for the mixed system. The application of the methodology assessed reveals that the main effect of the presence of milk fat, used as a paradigm of a well-known anti-blooming agent in a cocoa based system, is a slowdown of the liquid–solid transition of cocoa butter. Furthermore, in order to directly correlate the calorimetric results with the blooming phenomena, the cocoa butter <i>vs</i>. cocoa butter/milk fat blend comparison was also extended to dark chocolate and simulated milk chocolate matrices, which were investigated through image analysis.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1617 - 1628"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theory of conjugate mixed convection flow of hybridized ethylene glycol based nanoparticles with Joule heating","authors":"Michael O. Oni,&nbsp;Mojeed T. Akolade,&nbsp;Gabriel Samaila,&nbsp;Taiwo S. Yusuf,&nbsp;Yusuf Olatunji Tijani,&nbsp;Abdulhakeem Yusuf,&nbsp;Peter Bukar Malgwi","doi":"10.1007/s10973-024-13875-1","DOIUrl":"10.1007/s10973-024-13875-1","url":null,"abstract":"<div><p>Fundamentals of heat and fluid flow in green energy system is found as an alternative transition technique to achieving a sustainable energy system (combat climate change, energy conversion, renewable energy). Dissipation being an integral part of heat generation and energy transfer in flow medium received no or little attention on conjugate mixed convection model. Considerable attention of this Ethylene Glycol-based hybrid nanofluid is vested on the examination of the Joule and viscous dissipation effects for enhancing nuclear reactor and automotive radiator coolants in mechanical systems. The Tiwari-Das model is employed to incorporate the effects of nanoparticles in the deterministic model. This model provides a comprehensive framework for understanding how the presence of nanoparticles influences the system’s behaviour. As such, the model incorporates the dynamics of Joule heating, electric current density, Darcy, and viscous dissipation for <span>({textrm{Al}}_{2}{textrm{O}}_{3})</span> and Cu nanoparticles in the energy conservation equation. The bivariate spectral local linearization method (BSLLM) is employed to solve the conjugate mixed convection model of Ethylene Glycol fluid suspending <span>({textrm{Al}}_{2}{textrm{O}}_{3})</span> and Cu nanoparticles, since the governing differential equation is of the two unknown variables. During numerical and graphical simulations, results show that for cooling mechanism, the hybridized nanofluid (Ethylene Glycol + <span>({textrm{Al}}_{2}{textrm{O}}_{3})</span> + Cu) outperformed the usual Ethylene Glycol, Ethylene Glycol + <span>({textrm{Al}}_{2}{textrm{O}}_{3})</span> nanofluid throughout the cases considered. The results indicate that in the absence of the Eckert number, the Nusselt number decreases by <span>(0.205%)</span> for the nanofluid, while increasing by <span>(4.639%)</span> for the hybrid nanofluid. Additionally, when excluding the effects of conjugate heat transfer, the Nusselt number decreases by <span>(11.833%)</span> for the nanofluid and by <span>(21.438%)</span> for the hybrid nanofluid. Lastly, when the electric field effect is removed, the Nusselt number decreases by <span>(9.056%)</span> for the nanofluid and by <span>(15.156%)</span> for the hybrid nanofluid.</p></div>","PeriodicalId":678,"journal":{"name":"Journal of Thermal Analysis and Calorimetry","volume":"150 3","pages":"1933 - 1945"},"PeriodicalIF":3.0,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}