Powder Technology最新文献

{"title":"Porous HNS/CL-20 composite microspheres: Fabrication via electrostatic spraying with enhanced safety and combustion performance","authors":"Hou Conghua ,&nbsp;Ma Yilin ,&nbsp;Feng Chenhe ,&nbsp;Li Jingyu ,&nbsp;Wang Jingyu ,&nbsp;Zhang Chenyang","doi":"10.1016/j.powtec.2026.122185","DOIUrl":"10.1016/j.powtec.2026.122185","url":null,"abstract":"<div><div>Micro-nano structures are crucial in determining the macroscopic properties of energetic materials, particularly in composite energetic materials with porous architectures, which have attracted considerable attention in contemporary research owing to their exceptional combustion performance and superior thermal stability. In this study, HNS/CL-20 composite energetic microspheres featuring a porous structure were successfully synthesized using electrostatic spraying technology. The prepared microspheres had high sphericity with uniform particle size distribution and exhibited abundant and homogeneous pore structure, significantly increasing the specific surface area to 25.21–27.03 m²/g, representing an increase of 67.17%–79.24% and 195.54%–216.88% compared to nano-HNS and nano-CL-20, respectively. The structural analysis revealed that the composite microspheres retained the characteristic crystal structures of both nano-HNS and CL-20. Mechanical sensitivity testing demonstrated that, in comparison to nano-CL-20, the composite microspheres exhibited enhanced safety in terms of impact and friction sensitivity. Combustion experiment demonstrated that the combustion performance of the microspheres prepared via electrostatic spraying progressively improved, with the optimal deflagration duration and energy release observed at an HNS/CL-20 ratio of 7:3. In comparison to samples of the same proportion prepared via slurry kneading, the combustion rate increased by 30.03%, suggesting that the porous structure effectively accelerated the combustion reaction rate and enhanced the energy release capacity. XPS analysis of the combustion residues further indicates that the combustion is more complete when the HNS/CL-20 ratio is 7:3. In summary, the simple and efficient preparation of porous composite microspheres via electrostatic spraying can significantly improve their combustion performance and safety characteristics.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122185"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185705","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":"High pressure dewatering rolls: Effect of process variables on cake solids concentration and throughput","authors":"Sajid Hassan,&nbsp;Raul Cavalida,&nbsp;Peter J. Scales,&nbsp;Robin J. Batterham,&nbsp;Anthony D. Stickland","doi":"10.1016/j.powtec.2026.122139","DOIUrl":"10.1016/j.powtec.2026.122139","url":null,"abstract":"<div><div>The High Pressure Dewatering Rolls (HPDR) is a novel solid–liquid separation technology that combines compression, vacuum, and shear to enhance dewatering of fine mineral suspensions without requiring filter cloths. This study explores how roller speed, shear, feed concentration, flocculation, particle size distribution, and minimum roller gap affect HPDR performance using well-characterised calcium carbonate suspensions.</div><div>Increasing roller speed reduced cake solids concentration due to shorter dewatering times, but increased solids throughput up to an optimal speed near 4 rpm. At 7 rpm, throughput decreased due to material floating on top of the rollers and not passing through the nip effectively. Introducing shims to maintain a minimum roller gap eliminated floating and improved throughput by allowing more cake to pass through the nip.</div><div>For the coarser suspension, moderate speed difference (5%) slightly improved both performance measures: the highest cake solids concentration of 84.3 wt% was achieved at 0.5 rpm, while the maximum throughput of 445 kg/m².hr occurred at 4 rpm. Flocculation reduced solids passing through the filter and reporting to the filtrate, while adding 20% ultrafine calcium carbonate improved cake packing, reaching 87.9 wt% solids at low speed.</div><div>These results highlight the trade-offs between roller speed, shear, gap size, and feed properties in HPDR operation. Optimising these variables is essential to achieve both high throughput and cake solids, supporting the potential of HPDR as an effective dewatering solution for fine and compressible suspensions.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122139"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076415","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":"Tailoring mechanical and corrosion properties of a binder jet 3D printing Ni34Co28Cr28Al10 medium-entropy alloy via microstructural control","authors":"Wei Xue ,&nbsp;Ling Chen ,&nbsp;Jianwei Li ,&nbsp;Baoyong Li ,&nbsp;Yan Long ,&nbsp;Yuzhong Liu ,&nbsp;Dezhi Zhu ,&nbsp;Zhiqiang Fu","doi":"10.1016/j.powtec.2026.122188","DOIUrl":"10.1016/j.powtec.2026.122188","url":null,"abstract":"<div><div>Binder jet 3D printing (BJ3DP) was employed to fabricate a non-equiatomic Ni₃₄Co₂₈Cr₂₈Al₁₀ medium-entropy alloy (MEA), with a focus on tailoring the microstructure, mechanical properties, and corrosion resistance through post-process heat treatments. The aging treatment promoted the uniform precipitation of nanosized L1₂ particles and short rod-like B2/sigma phases, resulting in a balanced mechanical performance with a yield strength of ∼580 MPa, ultimate tensile strength of ∼725 MPa, and elongation of ∼4.9%. The alloy demonstrated superior corrosion resistance in the 3.5 wt% NaCl solution compared to 316 L stainless steel, characterized by a higher corrosion potential, lower corrosion current density, and stabilized passivation behavior. This enhancement is attributed to the formation of a continuous Cr-rich passive film and protective Al₂O₃-rich regions, despite micro-galvanic coupling between multiphase interfaces. The study highlights the capability of BJ3DP combined with optimized heat treatment to produce high-performance MEAs with tunable mechanical and corrosion properties, supporting the potential application in demanding environments.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122188"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076534","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":"Synthesis of rutile TiO2 from titaniferous slag using microwave heating and phosphoric acid leaching","authors":"Jin Chen ,&nbsp;Mamdouh Omran ,&nbsp;Shenghui Guo ,&nbsp;Kangqiang Li ,&nbsp;Fei He ,&nbsp;Guo Chen","doi":"10.1016/j.powtec.2026.122178","DOIUrl":"10.1016/j.powtec.2026.122178","url":null,"abstract":"<div><div>Artificial rutile TiO₂ is considered a promising substitute for scarce natural rutile. In this work, rutile-type TiO₂ was successfully synthesized from titaniferous slag through a combined process of microwave oxidation roasting and phosphoric acid leaching. The titaniferous slag, mixed with Na₂CO₃, was treated under microwave irradiation to break down the gangue and encapsulation phases, thereby exposing the titaniferous phase and converting it into NaTiO₃. Subsequent phosphoric acid leaching, which improves surface accessibility, efficiently transformed NaTiO₃ into H₂TiO₃. The leached product was then dried and microwave-calcined to obtain rutile-type TiO₂. The effects of leaching time on the microstructure, phase evolution, molecular structure, and surface functional groups of the products were examined using XRD, SEM, Raman, FT-IR, and TEM characterizations to elucidate the reaction mechanisms and determine optimal conditions. The results show that after 6 h of acid leaching, rutile TiO₂ became the dominant crystalline phase, featuring short rod-like structures and a dense, smooth surface. These findings confirm that rutile TiO₂ can be efficiently produced using the optimized process. Overall, this study demonstrates the potential of titaniferous slag as a sustainable raw material for high-value TiO₂ production.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122178"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076474","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":"Numerical simulation of particle-laden flow in an electrostatic precipitator to enhance particulate collection efficiency using an aerodynamic collecting plate profile","authors":"Hossein Yadollahpour Kebria ,&nbsp;Ramin Zakeri ,&nbsp;Masoud Darbandi","doi":"10.1016/j.powtec.2026.122128","DOIUrl":"10.1016/j.powtec.2026.122128","url":null,"abstract":"<div><div>Electrostatic precipitators (ESPs) are effective air-cleaning devices for curbing particulate pollution, but their performance can be affected negatively by electrohydrodynamic (EHD) flow induced by corona discharge. This leads to the formation of vortices close to the collecting electrode's surface. In this study, a numerical investigation of a novel geometry is conducted in order to enhance ESP collection efficiency by employing an aerodynamically shaped collecting electrode (NACA 0012 half-airfoil) in a wire-to-plate configuration. A validated multiphysics model, developed using COMSOL Multiphysics®, simulates the charged particle-laden flow in ESP by coupling three physics of corona discharge, airflow, and Lagrangian particle tracking. The aerodynamic design was implemented and compared with a conventional flat-plate electrode and other geometries under strong EHD conditions (10 W corona power). The results indicated that the NACA 0012 half-airfoil significantly reduces the EHD-induced turbulence compared to the baseline flat plate. This improved flow pattern leads to more effective particle guidance towards the collecting surface, as detected by quantitative analysis of particle trajectories (h_out parameter). As a result, the collection efficiency with the aerodynamic profile raised by 5% (from 55% to 60%). More importantly, a fair assessment of the thickness effect was performed, showing that the NACA 0012 half-airfoil offers a higher efficiency (60% vs. 57%) even compared to a flat plate of equivalent thickness. This efficiency gain is achieved by the airfoil's active management of the EHD flow. While this intense interaction results in a higher pressure drop (aerodynamic penalty) only under strong EHD conditions, the findings highlight aerodynamic shaping as a promising strategy for increasing particle capture efficiency in ESPs, especially for fine particles.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122128"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185861","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":"High-precision online correction of pellet size distribution under stacking conditions: An ARNN model enhanced by GAN-GVMD and attention mechanism","authors":"Weiwen Lu ,&nbsp;Shuang Lin ,&nbsp;Shihua Shao ,&nbsp;Kangkang Tan ,&nbsp;Liangjun Chen ,&nbsp;Hongming Long ,&nbsp;Zhengwei Yu","doi":"10.1016/j.powtec.2026.122170","DOIUrl":"10.1016/j.powtec.2026.122170","url":null,"abstract":"<div><div>The pellet size distribution, as a critical factor affecting blast furnace permeability, reduction reaction kinetics, and hot metal quality. Its high-precision online identification is essential for optimizing pelletizing parameters, improving pellet quality, and sustaining the stable and efficient operation of the blast furnace. In practical applications, machine vision-based pellet size identification is vulnerable to particle segregation, material stacking, and imaging distortions, which cause substantial discrepancies between the surface and true bulk size distributions and ultimately hinder its engineering applicability and large-scale industrial adoption. To address these issues, this study proposes a fused GAN_GVMD_ARNN integrated neural network model to correct the pellet size distribution data obtained from machine vision. After correction, 88% of the samples exhibit a deviation within ±2% between the image-based size composition and the results of sieve analysis. The experimental results demonstrate that the proposed model can effectively enhance the accuracy of pellet size distribution detection and significantly reduce measurement errors, providing a new technical pathway for image-based granulometric analysis.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122170"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076532","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":"One-step desulfurization of metallized pellets roasted by high-sulfur petroleum coke and zinc-bearing dust: Migration and removal mechanisms of sulfur","authors":"Xiting Li ,&nbsp;Zhuo Chen ,&nbsp;Haiming Cheng ,&nbsp;Qihang Wang ,&nbsp;Min Gu ,&nbsp;Weitong Du ,&nbsp;Jiayong Qiu","doi":"10.1016/j.powtec.2026.122167","DOIUrl":"10.1016/j.powtec.2026.122167","url":null,"abstract":"<div><div>The declining quality of global crude oil has led to a steady rise in the output of medium- and high‑sulfur petroleum coke (HSPC), driving research into its utilization in higher-value applications such as fuel or as a reducing agent in industrial processes. In this study, a one-step method was developed for simultaneous desulfurization and preparation of metallized pellets through carbothermal reduction of Zinc-bearing dust using HSPC. The effects of alkaline additives (KOH and NaOH) were systematically examined alongside key parameters including temperature and additive dosage. Thermodynamic analysis and mineralogical characterization elucidated the core mechanism: alkaline additives chemically fix gaseous sulfur species into stable solid sulfates, while concurrently modifying the slag phase structure to encapsulate residual sulfur, thereby achieving efficient sulfur immobilization and separation from the metallic phase. Results showed that sulfur content progressively decreased with rising temperature. Notably, at the optimum condition of 1400 °C with an 8% additive dosage, the desulfurization efficiency reached maximum of 69.88% for NaOH and 72.76% for KOH, demonstrating their superior performance. The majority of residual sulfur was retained within the slag phase as sulfides, enabling clear phase segregation from metallic iron without hindering its formation.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122167"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076533","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":"Machine learning rapid prediction for quality indicators in advanced manufacturing processes of titanium alloys","authors":"Ge Yu ,&nbsp;Yifu Long ,&nbsp;Deyu Yue ,&nbsp;Meng Li ,&nbsp;Yafeng Yang ,&nbsp;Shaofu Li ,&nbsp;Xizhong An","doi":"10.1016/j.powtec.2026.122166","DOIUrl":"10.1016/j.powtec.2026.122166","url":null,"abstract":"<div><div>Laser powder bed fusion (L-PBF) additive manufacturing (AM) of titanium alloys involves complex interactions between thermal and fluid phenomena that strongly influence molten pool geometry, surface morphology, and defect formation. However, conventional experimental and numerical optimization of process parameters is computationally expensive and unsuitable for rapid quality prediction. This study establishes a machine learning (ML) – Shapley additive explanation (SHAP) framework for fast and interpretable prediction of key quality indicators, including molten pool depth, surface roughness, and pore type of L-PBF titanium alloys, using datasets generated from a validated discrete element method (DEM) - computational fluid dynamics (CFD) numerical simulations. Seven ML algorithms (Regression, KNN, BPNN, DT, RF, SVR, and XGBoost) are systematically evaluated with min-max normalized inputs and 5-fold cross-validation. Among them, XGBoost demonstrates the best balance of prediction accuracy, generalization, and efficiency across both regression and classification tasks. To enhance interpretability and reduce the impact of experimental design, SHAP is applied to quantify feature contributions, nonlinear dependence trends, and parameter interaction effects. The SHAP results reveal that molten pool depth is primarily governed by laser power, whereas surface roughness and pore type are dominated by laser scanning velocity. Dependence and partial dependence analysis further uncover monotonic relationships and class switches, such as the strong positive sensitivity of depth to energy input, the suppression of shrinkage pores driven by velocity, and the linear promotion of lack-of-fusion pores by hatch spacing. SHAP interaction matrices confirm that coupled effects between laser power and scanning velocity control both molten pool morphology and pore transition mechanisms, while combinations involving hatch spacing exhibit only weak interactions. Overall, this interpretable ML-SHAP framework not only achieves rapid and accurate prediction of material quality indicators but also provides mechanistic insights consistent with underlying L-PBF physics. The developed approach offers a practical and physically informed tool for intelligent parameter optimization and quality control in additive manufacturing of titanium alloys.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122166"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076481","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":"Experimental and numerical study on discharge flow pattern and dynamic lateral pressure in silos with different hopper inclination angles","authors":"Lingling Jia ,&nbsp;Yuanhao Zhang,&nbsp;Kejin Liu,&nbsp;Peiran Guo,&nbsp;Wenlong Song,&nbsp;Zhenxiang Jin","doi":"10.1016/j.powtec.2026.122227","DOIUrl":"10.1016/j.powtec.2026.122227","url":null,"abstract":"<div><div>To study the effect of different hopper inclination angles on silo discharge flow pattern evolution and dynamic wall pressure, semi-physical model tests and numerical simulations were conducted. The experimental material was stratified using calcined clay pellets of 3.5 mm diameter in two distinct colors. Three sets of discharge tests with 45° hopper inclination angle were performed, in which High-speed photography and pressure sensing techniques were employed to capture the characteristics of particle flow pattern and the dynamic wall pressure. Numerical simulations were conducted for discharge processes with 30°, 45°, and 60° hopper inclination angles. Findings indicate that the overpressure coefficient increases with greater inclination angles. Although the 60° inclination improves discharge efficiency by approximately 25%, it also significantly increases the risk of overpressure at the silo bottom. The arching phenomenon in the lower 1/3 h area of the silo wall transmits the particle load through the force chain network, and its fracture-reconstruction process directly leads to the instantaneous surge of the lateral pressure of the silo wall. The transition points between flow patterns decreases as the hopper inclination decreases. The static zone height during discharge exhibits an initial increase followed by a decrease for hopper inclination angles of 30° and 45°, while no well-defined static zone is observed at 60°. These results provide both experimental evidence and theoretical guidance for the optimized design of silos with varying hopper inclinations.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122227"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185362","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":"A convective heat transfer model for cylindrical biomass particles in fluidized beds accounting for particle orientation and neighboring effects: CFD-DEM validation and application","authors":"Yuhao Hu ,&nbsp;Xiaosong Hu ,&nbsp;Zihan Liu ,&nbsp;Huaqing Ma ,&nbsp;Lianyong Zhou ,&nbsp;Yongzhi Zhao","doi":"10.1016/j.powtec.2026.122232","DOIUrl":"10.1016/j.powtec.2026.122232","url":null,"abstract":"<div><div>As a core component of renewable energy, biomass energy largely relies on fluidized beds for its efficient conversion, where the heat transfer efficiency between cylindrical biomass particles and the carrier fluid directly determines the system performance. However, existing theories cannot accurately describe the heat transfer behaviors of cylindrical particle groups. Furthermore, research on the influence mechanism of the aspect ratio (AR) of cylindrical biomass particles on heat transfer remains insufficient. To address these gaps, a new heat transfer prediction model for cylindrical biomass particles was developed, which considers the combined effects of neighboring particles and particle orientation. Subsequently, based on the computational fluid dynamics coupled with the discrete element method (CFD-DEM), the new model was verified through comparison with experimental results. Finally, the influence of AR on the thermal behaviors of particle groups was comprehensively investigated. Narrow and elongated hot zones were observed to form in the bottom region of the fluidized bed, where an increase in AR directly extends the length of these zones. In addition, AR plays a significant role in dictating the uniformity of bed temperature distribution and expanding the area with a high convective heat transfer rate. The newly developed model has demonstrated reliable predictive capabilities for the thermal behaviors of spherical and non-spherical particles, providing fundamental theoretical tools for optimizing the design of fluidized bed reactors and improving the controllability of industrial biomass conversion processes.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"473 ","pages":"Article 122232"},"PeriodicalIF":4.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185687","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}