Advanced Powder Technology最新文献

{"title":"Evaluation of tortuosity: A radical tessellation-based method in porous spherical particle packing systems","authors":"Zongli Chen,&nbsp;Chenzhe Li,&nbsp;Ying Zhao","doi":"10.1016/j.apt.2026.105191","DOIUrl":"10.1016/j.apt.2026.105191","url":null,"abstract":"<div><div>Estimating the tortuosity of porous electrodes is important for understanding the performance of lithium-ion batteries and optimizing the design of electrode microstructures. In this work, an improved method for estimating the tortuosity of porous electrodes is proposed based on radical tessellation, and the results agree well with those calculated by empirical formulas and finite element simulations. Compared with empirical formulas, the proposed method can estimate tortuosity for more complicated microstructures, regardless of particle distribution and size dispersity; compared with finite element simulations, the proposed method offers a significant advantage in computational efficiency. Based on the method, the influence of different microstructure characters on the tortuosity is discussed. It is found that in addition to the porosity, the particle size and particle aggregation morphology are all critical in influencing the tortuosity of the porous electrode. Finally, the tortuosity obtained by this method is integrated into the Pseudo-2-dimension (P2D) model for the calculation of effective properties, and the results show that this method offers an efficient way in improving the prediction accuracy of P2D models.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 3","pages":"Article 105191"},"PeriodicalIF":4.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and investigation on structural, dielectric and electrical features of novel ferrite based particulate composites","authors":"Khushboo Birra ,&nbsp;Shraddha C. Shirbhate ,&nbsp;Pranay R. Kautkar ,&nbsp;Samir M. Khule ,&nbsp;Sanjay B. Nagdeote ,&nbsp;K. Pushpanjali Patra ,&nbsp;Vishwajit M. Gaikwad","doi":"10.1016/j.apt.2026.105192","DOIUrl":"10.1016/j.apt.2026.105192","url":null,"abstract":"<div><div>Zinc ferrite based (1-<em>x</em>)ZnFe₂O₄(ZFO)-<em>x</em>NiO(NO) (<em>x</em> = 0–40%) composites are synthesized via solid state sintering method. Structural studies reveal the lattice parameters of composites are significantly influenced by the interfacial strain induced at the interfaces of composites. Internal atomic surroundings of both ZFO and NO unit cells are getting modified by composite formation. FTIR spectra indicate structural stability without any structural modulation after the inclusion of NO phase into ZFO matrix. The homogeneous distribution of ZFO and NO grains with significant grain connectivity is noticed for all composite samples. Room temperature dielectric studies indicate the enhancement of dielectric constant and improvement in dielectric loss with the incorporation of NO phase into ZFO matrix. The low frequency dielectric constant values of composites follow effective medium approximation (EMA) model. The interfaces between ZFO and NO phases create conductive interfaces that are accountable for overall enhancement in electrical properties of composites.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 3","pages":"Article 105192"},"PeriodicalIF":4.2,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of counterpart material on glass particle morphology in binary component attrition milling evaluated by experiment and DEM simulation","authors":"Chiharu Tokoro ,&nbsp;Yuki Murata ,&nbsp;Yutaro Takaya ,&nbsp;Hidehiro Kamiya ,&nbsp;Kohei Komori ,&nbsp;O Shourin","doi":"10.1016/j.apt.2025.105150","DOIUrl":"10.1016/j.apt.2025.105150","url":null,"abstract":"<div><div>This study investigated the fragmentation of glass particles in binary mixtures with alumina, steel, and lead during attrition milling. The fragmentation kinetics, particle size distributions, and fragment morphologies were evaluated experimentally, and kinetic parameters were extracted using a population balance model. Discrete element method simulations clarified the dynamic interactions governing the material-dependent fragmentation. The results indicated that the mechanical properties of the counterpart materials strongly affected the collision intensity and fragment morphology. Alumina induces frequent high-energy collisions and efficient size reduction, producing irregular angular fragments. When lead was used, glass exhibited minimal fragmentation because the collision energy dissipated through plastic deformation during prolonged contact. Steel exhibited moderate fragmentation and generates fragments with low aspect ratios and high circularities suitable for recycling applications. The integration of experiments and simulations elucidated selective comminution mechanisms in heterogeneous systems and demonstrated that fragmentation efficiency and particle morphology can be tuned by the choice of counterpart material.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105150"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neutron irradiation-enhanced orange-red emission in double perovskite phosphors for harsh radiation environments","authors":"Noor Zamin Khan ,&nbsp;Zhe Qin ,&nbsp;Sayed Ali Khan ,&nbsp;Anqi Lin ,&nbsp;Zhuan Zhao ,&nbsp;Muhammad Amin Padhiar ,&nbsp;Zakir Ullah ,&nbsp;Sonehra Anjum ,&nbsp;Shimao Wang ,&nbsp;Gang Meng","doi":"10.1016/j.apt.2026.105173","DOIUrl":"10.1016/j.apt.2026.105173","url":null,"abstract":"<div><div>In this study, double perovskite <span><math><mrow><msub><mrow><mi>C</mi><mi>a</mi></mrow><mn>2</mn></msub><mi>L</mi><mi>u</mi><mi>T</mi><mi>a</mi><msub><mi>O</mi><mn>6</mn></msub><mo>:</mo><msup><mrow><mi>S</mi><mi>m</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></span> oxide phosphors were subjected to 14 MeV neutron irradiation with a total fluence of 1 × 10¹³n/cm² to evaluate their performance for space applications. A detailed investigation of photoluminescence (PL), crystal structure, X-ray photoelectron spectroscopy (XPS), and surface morphology for pre- and post-exposure to neutron irradiation. The PL results demonstrated that neutron-irradiated samples exhibit a significantly higher luminescence intensity compared to their non-irradiated counterparts. Notably, the sample with an <span><math><mrow><mn>0.05</mn><msup><mrow><mi>S</mi><mi>m</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></span> doping concentration showed over 15% increase in luminescence intensity for the orange-red emission, peaking at 603 nm under 407 nm excitation, following irradiation. This observation challenges the conventional belief that high-energy radiation invariably degrades optical properties. Our results reveal that neutron irradiation induces beneficial defects, such as oxygen vacancies and lattice distortions, which effectively suppress non-radiative recombination and enhance <span><math><mrow><msup><mrow><mi>S</mi><mi>m</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></span> emission. Furthermore, the <span><math><mrow><msub><mrow><mi>C</mi><mi>a</mi></mrow><mn>2</mn></msub><mi>L</mi><mi>u</mi><mi>T</mi><mi>a</mi><msub><mi>O</mi><mn>6</mn></msub><mo>:</mo><msup><mrow><mi>S</mi><mi>m</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></span> samples exhibit remarkable durability under neutron irradiation. The optical and structural characteristics indicate that <span><math><mrow><msup><mrow><mi>S</mi><mi>m</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math></span>-doped <span><math><mrow><msub><mrow><mi>C</mi><mi>a</mi></mrow><mn>2</mn></msub><mi>L</mi><mi>u</mi><mi>T</mi><mi>a</mi><msub><mi>O</mi><mn>6</mn></msub></mrow></math></span> is a promising orange-red phosphorescent material for applications in harsh radiative environments.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105173"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual role of redox-active V2O5/CeO2 nanocomposite electrodes in high-performance supercapacitor and battery applications","authors":"K. Sutharthani,&nbsp;S.S. Pradeepa,&nbsp;R. Suba Devi,&nbsp;M. Sivakumar","doi":"10.1016/j.apt.2026.105185","DOIUrl":"10.1016/j.apt.2026.105185","url":null,"abstract":"<div><div>Electrochemical attributes of transition metal oxide hybrids are an active domain of research for energy storage applications. This study strives to explore the plausible performance of V₂O₅/CeO₂ nanocomposite in supercapacitor applications and their anode capabilities in Lithium-ion batteries (LIBs). Egg albumin is tapped as a bioreactor solvent for CeO₂ synthesis. Microstructural analysis confirmed the successful integration of CeO₂ into the V₂O₅ matrix, exhibiting a BET surface area of 32 m² g⁻¹ and excellent elemental homogeneity. Owing to their intriguing redox properties, the conjunction of V⁵⁺ and Ce⁴⁺ redox duos refines the diffusivity, thereby resulting in optimum performance in both applications. The discharge capacity of the V₂O₅/CeO₂ nanocomposite was quantified as 1146.57 mAh g⁻¹ at a current density of 0.1 A g⁻¹. After 100 cycles at 1 A g⁻¹, it retained 235.76 mAh g⁻¹, exhibiting an 82.8 % capacity retention. As a supercapacitor electrode, it demonstrated a specific capacitance of 1173.05 F g⁻¹ at 1 A g⁻¹. The cyclic stability of the nanocomposite was verified over 5000 cycles with capacity retention of 97.4 %. The cumulative dissection of the V₂O₅/CeO₂ nanocomposite showcased its strong potential in electrochemical applications.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105185"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel eccentric-pelletisation for rifampicin agglomerates: Process optimization and high-dose pulmonary delivery","authors":"Jianhui Liu ,&nbsp;Hang Zhou ,&nbsp;Jiale Chen ,&nbsp;Ying Ma ,&nbsp;Shuangxi Shao ,&nbsp;Honglei Zhang ,&nbsp;Xiang Luo ,&nbsp;Kaiqi Shi ,&nbsp;Chongjiang Cao ,&nbsp;Jesse Zhu ,&nbsp;Dechun Huang","doi":"10.1016/j.apt.2026.105178","DOIUrl":"10.1016/j.apt.2026.105178","url":null,"abstract":"<div><div>High-dose inhaled therapy offers a promising approach for respiratory infections, requiring efficient particle engineering. While fine particles from the milling process improved lung deposition, their poor flowability and high cohesion posed significant challenges for handling and dosing. In this study, a novel eccentric-pelletisation machine was developed to transform purely fine rifampicin powders into spherical agglomerates, significantly improving their flowability, dispersibility, and handling properties. Key manufacturing parameters − including relative humidity (60–70%), eccentric speed (240 rpm), eccentric time (20 min), and sieve size (400 µm) − were systematically optimized using an L₉(3⁴) orthogonal design. The optimized rifampicin agglomerates exhibited favorable properties, including bulk density (∼0.35 g/cm³), flow rate (∼0.59 g/s), roundness (∼0.92), yield (∼89.68%), and fine particle fraction/mass (&gt;55%/5 mg), ensuring efficient high-dose delivery. Furthermore, the optimized agglomerates from three batches demonstrated excellent reproducibility of aerodynamic and physical properties. This study highlights the potential of the eccentric-pellestisation machine as a robust and scalable platform for producing inhalable rifampicin formulations, providing a foundation for industrial production and clinical applications for respiratory infections.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105178"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measurement and calibration of bonding parameters for a multi-scale DEM model of corn ears: experiment and simulation alignment","authors":"Dandan Han ,&nbsp;Tingyi Mo ,&nbsp;Yunxia Wang ,&nbsp;Chao Tang ,&nbsp;Lin Chen ,&nbsp;Lijia Xu","doi":"10.1016/j.apt.2026.105175","DOIUrl":"10.1016/j.apt.2026.105175","url":null,"abstract":"<div><div>An innovative flexible corn ear Discrete Element Method (DEM) model was established to effectively capture hierarchical anatomical properties of the corncob. By embedding kernel apices within the interstitial voids of xylem annulus particles and establishing multi-point adhesive connections, the model facilitates detachable kernel mechanics and corncob fracture dynamics. Experimental quantification yielded circumferential and axial threshing forces of 19.24 N and 28.70 N for four kernels arranged in a 2 × 2 matrix pattern relative to the corncob. These measurements served as benchmark criteria for systematic bonding parameter calibration. Sequential application of optimization tests identified the optimal bonding parameter set governing kernel–corncob interactions. Model validation demonstrated simulated circumferential and axial threshing forces of 19.37 N and 28.83 N, yielding relative errors of 0.68 % and 0.42 %. Implementation of the calibrated ear DEM model for longitudinal axial flow threshing apparatus simulation successfully reproduced dynamic bond failure mechanisms between kernels and corncob, axial kernel distribution patterns within the cylinder, and the inverse correlation between unthreshed rate and cylinder rotational velocity. The developed flexible ear DEM model substantially advances simulation authenticity and accuracy for threshing processes, furnishing a robust computational platform and theoretical basis for investigating low-loss, high-efficiency threshing separation mechanisms.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105175"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-friendly Typha latifolia gold quantum dots with microfluidic-boosted antimicrobial and antioxidant performance","authors":"Kimia Torabi ,&nbsp;Fateme Aghamir ,&nbsp;Zinab Moradi Alvand ,&nbsp;Ghasem Eghlima","doi":"10.1016/j.apt.2025.105161","DOIUrl":"10.1016/j.apt.2025.105161","url":null,"abstract":"<div><div>This study introduces a sustainable and green approach for synthesizing gold quantum dots (Au QDs) using an ultrasound–assisted method with <em>Typha latifolia</em> leaf extract serving as both the reducing and stabilizing agent. Optimization via Box–Behnken design yielded monodisperse nanoparticles with high crystallinity and a predominantly spherical morphology, exhibiting an average diameter of 6.8 ± 4.7 nm. Spectroscopic and microscopic analyses (XRD, UV–Vis, DLS, FTIR, TEM) confirmed successful formation and surface functionalization of the Au QDs. Antibacterial assessments revealed that the Au QDs achieved complete inhibition of <em>Bacillus subtilis</em> and <em>Escherichia coli</em> at MIC values of 0.20 and 0.40 mg/mL, representing a fold improvement over the crude extract. Integration with a microfluidic platform accelerated bactericidal action, enabling rapid detection of potassium ion leakage (1.57 ± 0.09 ppm for <em>B. subtilis</em>, 1.34 ± 0.06 ppm for <em>E. coli</em>) within 30 min—approximately 50 % faster than conventional assays. Antioxidant performance improved markedly, with DPPH, ABTS, and NO scavenging activities increasing by 28–46 % relative to the extract. Biosafety evaluations using <em>Allium cepa</em>, <em>Artemia urmiana</em>, and MTT assays indicated negligible cytotoxicity and genotoxicity across tested concentrations. Collectively, these results demonstrate that <em>T. latifolia</em>–derived Au QDs possess strong antimicrobial and antioxidant activities, rapid microfluidic–enabled responsiveness, and excellent biosafety, establishing them as promising candidates for translational biomedical and environmental applications.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105161"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of manufacturing route on powder biomaterial Co–Cr–Mo–W dental implants: microstructural and environmental assessment","authors":"Deepak Sharma ,&nbsp;Sanjeev Kumar ,&nbsp;Varun Sharma","doi":"10.1016/j.apt.2026.105186","DOIUrl":"10.1016/j.apt.2026.105186","url":null,"abstract":"<div><div>Microwave sintering, a form of powder metallurgy, and direct metal laser sintering, an additive manufacturing technique, have enhanced the efficiency and sustainability of processing CoCrMoW alloy powder biomaterials used in dental applications. This work examines the microstructural, mechanical, corrosion, and sustainability performance of CoCrMoW dental implants fabricated through two distinct routes. Dental implants fabricated with the direct rapid tooling route exhibited a fully melted, dense microstructure with smooth surfaces and low porosity (3.02%), which enhanced densification, reduced oxidation, and increased crystallinity. On the other hand, dental implants fabricated through the indirect rapid tooling route showed rougher surfaces and higher porosity (38.19%), as well as higher hardness due to the formation of an amorphous phase and oxide dispersion strengthening. Additionally, they exhibited improved corrosion resistance due to the formation of an effective protective oxide film. The direct rapid tooling route demonstrated a significantly lower potential for global warming (0.34 kg CO₂ eq) and fewer repercussions on ecosystems, human health, and resource depletion compared to indirect rapid tooling (19.53 kg CO₂ eq). This study has demonstrated that the direct rapid tooling approach offers a superior, more efficient, and environmentally responsible route for fabricating CoCrMoW alloy dental implants.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105186"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Internal geometry optimization of a vacuum rotary kiln for enhanced low-temperature drying of pharmaceutical solids","authors":"Yuka Fukushima ,&nbsp;Toshiki Nakamura ,&nbsp;Fumihiko Kato ,&nbsp;Shizuki Ohshima ,&nbsp;Motoharu Suzuki ,&nbsp;Kohei Tahara","doi":"10.1016/j.apt.2025.105162","DOIUrl":"10.1016/j.apt.2025.105162","url":null,"abstract":"<div><div>Low-temperature drying is a critical step for ensuring the product quality and long-term stability of pharmaceutical solids such as granules and tablets. Vacuum rotary kilns have a wide range of industrial applications and are potentially applicable to the low-temperature drying of pharmaceutical solids. In this study, a vacuum rotary kiln was modified by the utilization of a hot-water circulation unit to improve the heat transfer efficiency and addition of internal structural components to the rotating cylinder to improve the powder flow characteristics. Experiments demonstrated that these components promoted the ideal cascading motion, which increased contact between the granules and heated cylinder wall and improved mixing uniformity throughout the powder bed. Numerical simulations were conducted to visualize particle trajectories and contact areas and quantify mixing indices. Among the internal structural components tested, flights with an axial gradient and high contact frequency with the powder bed as well as metal liners with high porosity enhanced the drying efficiency by reducing the drying time and minimizing localized overheating. These results demonstrate the potential applicability of vacuum rotary kilns to the low-temperature drying process of pharmaceutical solids by optimizing their internal geometry.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"37 2","pages":"Article 105162"},"PeriodicalIF":4.2,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145922470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}