Journal of Wind Engineering and Industrial Aerodynamics最新文献

{"title":"Effect of building parameters on urban ventilation efficiency for pedestrian areas: Considering internal and external pollution sources","authors":"Gaoqiang Cao ,&nbsp;Tingting Hu ,&nbsp;Guoyi Jiang ,&nbsp;Jinxin Cao ,&nbsp;Yan Liu","doi":"10.1016/j.jweia.2025.106150","DOIUrl":"10.1016/j.jweia.2025.106150","url":null,"abstract":"<div><div>This study investigated the impact of contemporary residential building layouts on urban ventilation efficiency through computational fluid dynamics simulations. Using a representative Shanghai residential district as a baseline model, multiple urban configurations were developed by systematically varying key parameters including building coverage ratio (<em>BCR</em>), passage width, building height distribution, and spatial arrangement while maintaining a constant floor area ratio. The analysis incorporated both internal and external pollution sources to assess pollutant dispersion patterns across different urban morphologies. Ventilation performance was evaluated using three dimensionless indices: spatially-averaged wind speed ratio, normalized concentration, and visitation frequency. Complementary analyses of air exchange rates and pollutant flux further elucidated ventilation mechanisms and interrelationships between evaluation indices. Main findings reveal that: enhanced ventilation correlates strongly with wider pedestrian passages and lower building coverage ratios; staggered building arrays demonstrate superior ventilation performance compared to aligned configurations under high-density conditions (<em>BCR</em> ≥0.166); vertical height variation in compact layouts (<em>BCR</em> = 0.33) improves ventilation efficiency by 8.8–22.1 % under perpendicular wind incidence (90°); compared to external pollution source, internal source show strong morphological sensitivity. This work validates the robustness of existing design parameter (passage ratio) in ventilation design and expands its scope of application for urban design and planning.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"264 ","pages":"Article 106150"},"PeriodicalIF":4.2,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272331","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":"Analysis of wind-induced vibration and collapse failure of prestressed truss string structures under thunderstorm downbursts","authors":"Yiwen Lu ,&nbsp;Wenhao Liu ,&nbsp;Bin Zeng ,&nbsp;Chang Wu ,&nbsp;Zhen Zhou","doi":"10.1016/j.jweia.2025.106146","DOIUrl":"10.1016/j.jweia.2025.106146","url":null,"abstract":"<div><div>A deterministic-stochastic hybrid model is employed to simulate the thunderstorm downburst wind field on prestressed truss string structures (PTSS). Subsequently, machine learning techniques are utilized to predict the wind pressure coefficients (WPCs) of the structure under such downbursts, which indicate that the XGBoost model demonstrates superior predictive performance, achieving the R² of 0.9921. Based on the wind field simulations and WPC predictions, the wind-induced vibration response of the PTSS is analyzed. The results show that yielding of diagonal web members leads to significant residual deformation, while cables experience tension relaxation, with up to 56 % loss. Subsequent incremental dynamic analysis (IDA) quantitatively investigated the progressive deformation patterns and the wind-driven collapse mechanism. As the downburst wind speed approaches its peak, stress conditions of the top and bottom chords undergo a sudden change. Notably, significant mid-span deformation occurs in the bottom chord on the windward side, leading to bulging and sinking areas. The stress conditions of diagonal web members undergo a secondary abrupt change leading to buckling, increasing buckling degrees among related members. Such changes cause substantial rotations within one-third span of truss on the windward side, culminating in dynamic structural collapse, which indicates the high sensitivity of PTSS under thunderstorm downbursts.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"264 ","pages":"Article 106146"},"PeriodicalIF":4.2,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253737","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":"Aeroelastic testing of monopole mounted on a high-rise building under atmospheric boundary layer wind","authors":"Mohamed Eissa ,&nbsp;Haitham A. Ibrahim ,&nbsp;Amal Elawady","doi":"10.1016/j.jweia.2025.106149","DOIUrl":"10.1016/j.jweia.2025.106149","url":null,"abstract":"<div><div>Modern architectural designs of high-rise buildings have evolved to comprise a higher pinnacle to further increase the building height or to incorporate telecommunication devices by utilizing roof-mounted structures such as monopoles or lattice towers. However, due to their height and flexibility, the susceptibility of roof-mounted structures to wind-induced vibrations becomes a concern, especially when it couples with building-associated vibrations. Prior studies have addressed the wind-induced response of either high-rise buildings solely or ground-mounted telecommunication structures, leaving a gap in understanding the behavior of their roof-mounted replicas. To that end, this paper investigates the dynamic response of roof-mounted monopoles through an aeroelastic wind testing campaign. A 2-DOF aeroelastic model with a geometric scaling of 1:150 was developed to represent a 166-m high-rise building with a 40-m tall hollow-sectioned monopole mounted on the rooftop. This paper considers varying wind speeds and structural damping conditions of the supporting building. Results indicate that wind-induced vibrations of the building significantly amplify the response of the roof-mounted monopole for different Scruton numbers. Additionally, the vibrational characteristics of the building may be reflected in the monopole's response, inducing an amplification in the response. The across-wind response of the building greatly influences the dynamic response of roof-mounted monopoles, an effect that current standards overlook. The findings suggest maximum magnification factors of 8.83 based on the root-mean-square (RMS) of wind forces acting on the tip of the monopole in the across-wind direction. Furthermore, vortex-shedding effects associated with the building cause excessive vibration in the monopole, particularly at low Scruton numbers. This study lays the foundation for bridging the existing gap in the literature and provides foundational insights into wind-induced dynamics of roof-mounted monopoles that potentially inform future advancements in building codes and standards.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"264 ","pages":"Article 106149"},"PeriodicalIF":4.2,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253837","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":"Deep probabilistic modeling of environment-dependent tropical cyclone intensity evolution using Flow generative models","authors":"Wenjun Jiang ,&nbsp;Xi Zhong ,&nbsp;Jize Zhang ,&nbsp;Ahsan Kareem","doi":"10.1016/j.jweia.2025.106127","DOIUrl":"10.1016/j.jweia.2025.106127","url":null,"abstract":"<div><div>In this study, Flow-based deep generative models are developed to simulate the environment-dependent tropical cyclone (TC) intensity evolution. Leveraging Flow’s unique capability to tractably model complex probability distributions, a conditional randomization test was first implemented to reduce the TC intensity dependency from a large pool of fifteen candidate variables to five significant ones. Then, a conditional Flow model was developed to guide the over-ocean environment-dependent TC intensity evolution, and an enhanced land decay model was developed for over-land evolution. 963 storms from China Meteorological Administration (CMA) dataset during 1980 to 2022 were used to develop and evaluate the Flow-based simulation framework in the Western Northern Pacific (WNP) basin. Overall, the proposed approach showed an excellent fit with historical observations in terms of hindcasting performance, simulated TC key statistics, TC spatial distributions, and the probability distributions of 6-h and 24-h intensity change. Flow-based models also competed favorably over existing stochastic linear regression models or Hidden Markov Models. Finally, a site-specific simulation validation along the China coastline showcased its potential for TC wind disaster assessment.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"264 ","pages":"Article 106127"},"PeriodicalIF":4.2,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212851","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":"Prediction of critical tornado load effects on multi-span transmission line–insulator systems: A framework integrated with analytical and optimization methods","authors":"Tao Chen ,&nbsp;Dahai Wang ,&nbsp;Zenghao Huang ,&nbsp;Qingshan Yang ,&nbsp;Guoqing Huang","doi":"10.1016/j.jweia.2025.106136","DOIUrl":"10.1016/j.jweia.2025.106136","url":null,"abstract":"<div><div>Predicting the wind load effects on a multi-span transmission line-insulator system (MSTLIS) during tornado conditions presents challenges due to its unique characteristics, including localized size, three-dimensional wind profiles, and the time-varying, uncertain positions of components resulting from tornado translation. This study focuses on predicting critical tornado-induced reactions transmitted to transmission towers, which are the key factors for controlled load cases in structural design. A nonlinear analytical method is introduced, integrating deformation compatibility and equilibrium equations for conductors and insulators to evaluate the quasi-static dynamic responses of MSTLIS under non-uniform, time-varying tornado loads. The accuracy of this method is validated against numerical results from the finite element method (FEM). Additionally, a pattern search optimization algorithm is utilized to efficiently identify critical tornado load cases under any tornado and structural parameters, outperforming traditional grid search methods. This framework is further employed in a parametric analysis to explore the influence of various parameters on critical load cases. This paper provides novel insights for enhancing the prediction of critical load cases for MSTLIS reactions on towers under moving tornado conditions.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"264 ","pages":"Article 106136"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195343","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":"Study on the calculation method of drag coefficient of lattice angle steel structure under turbulent skewed wind action","authors":"Qi Zhou ,&nbsp;Yakun Gao ,&nbsp;Ledong Zhu ,&nbsp;Jin Wang","doi":"10.1016/j.jweia.2025.106134","DOIUrl":"10.1016/j.jweia.2025.106134","url":null,"abstract":"<div><div>As a critical component of transmission lines, lattice towers are highly sensitive to wind loads. Accurate determination of the drag coefficient for lattice structures under turbulent skewed winds is therefore essential. This study focuses on the aerodynamic behavior of the tower body of an angle steel lattice transmission tower. Through wind tunnel tests and CFD simulations, the aerodynamic force coefficients of the lattice structure were investigated under different wind speeds, solidity ratios, and wind flow fields. A novel calculation formula for the skewed wind load factor of lattice structures was proposed through regression analysis of experimental data. The proposed formula was compared with recommendations from current standards. Additionally, turbulence influence factors and specific angle factors were introduced to quantify the effect of turbulence intensity on the drag coefficient of the lattice structure. The results indicate that the new skewed wind load factor calculation matches well with experimental results and the skewed wind factor can be derived from the solidity ratio. The drag coefficient of the lattice structure increases with rising turbulence intensity. Both the turbulence influence factors and specific angle factors effectively capture the effects of turbulence intensity on the drag coefficient, exhibiting a linear relationship with turbulence intensity.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"264 ","pages":"Article 106134"},"PeriodicalIF":4.2,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204275","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":"Influence of wind-blown sand movement induced by downburst wind on aerodynamic characteristics of a train running on viaduct","authors":"Shengpeng Wang,&nbsp;Liming Du,&nbsp;Xiuzhao Wang,&nbsp;Jing Chen","doi":"10.1016/j.jweia.2025.106135","DOIUrl":"10.1016/j.jweia.2025.106135","url":null,"abstract":"<div><div>As a strong sinking airflow, thunderstorm downbursts are prone to cause convective sandstorms, seriously affecting the safety of high-speed trains (HST) running on bridges. Firstly, an impinging jet flow model was used to simulate the downburst wind field, and nonlinear least-squares fitting was applied to obtain vertical wind velocity profiles from the simulation results. Then, these profiles were combined with inlet conditions to induce sand movement, creating a sandstorm environment. Finally, the discrete phase model (DPM) was applied to analyze the effects of radial distance and sand particle diameter on the HST aerodynamic characteristics. The results indicated that sand concentrations initially increased and then decreased with radial distance, while they consistently increased with larger particle diameters. Since the effect of crosswinds played a dominant role, variations in the pressure coefficient were more sensitive to radial distance than to sand diameter. Furthermore, under different conditions with and without sand, the drag force coefficient (<em>C</em>_<em>X</em>), lateral force coefficient (<em>C</em>_<em>Z</em>), and overturning moment coefficient (<em>C</em>_<em>MX</em>) exhibited the most significant differences at radial distance <em>r</em> = 1.0 <em>D</em>_jet, with 6.63 %, 5.02 %, and 3.47 %, respectively. For the lift force coefficient (<em>C</em>_<em>Y</em>), the maximum difference of 6.10 % occurred at a radial distance of <em>r</em> = 0.5 <em>D</em>_jet. Additionally, as the sand diameter increased from 0.05 mm to 0.5 mm at <em>r</em> = 1.0 <em>D</em>_jet, <em>C</em>_<em>X</em>, <em>C</em>_<em>Y</em>, <em>C</em>_<em>Z</em>, and <em>C</em>_<em>MX</em> of the entire train increased by 87.09 %, 5.16 %, 3.95 %, and 6.01 %, respectively, under radial distance <em>r</em> = 1.0 <em>D</em>_jet.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106135"},"PeriodicalIF":4.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195103","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":"Theoretical research and control measures of gas accumulation based on airflow oscillation model in the upper ventilation of parallel roadway","authors":"Aitao Zhou ,&nbsp;Fangzhou Song ,&nbsp;Kai Wang ,&nbsp;Shunyi Zhang ,&nbsp;Yushuang Hao","doi":"10.1016/j.jweia.2025.106132","DOIUrl":"10.1016/j.jweia.2025.106132","url":null,"abstract":"<div><div>In the field of coal mining, a safe and stable ventilation system is the lifeline of coal mines, and the gas flow generated after the occurrence of coal and gas protrusion disasters seriously affects the stability of the wind flow in the shafts. Therefore, it is of great significance to study disaster control and loss reduction after coal-gas outburst. Previously, there were fewer studies on airflow oscillations in open-loop systems in coal mines. Comprehensive use of theoretical analysis, experimental analysis, and numerical simulation to study the oscillatory behavior of airflow in coal mine open-loop systems. Control equations for an idealized open-loop branching system are defined, and a numerical analysis method that considers dispersion and mixing at the air-methane interface is developed and validated against a physical model. This study derives the oscillatory behavior of airflow caused by gas wind pressure in upward ventilation of parallel inclined roadways. Using modeling to parameterize the effect of initial airflow velocity of stagnant methane in upward ventilated roadways containing parallel branching roadways, the conditions for controlling the phenomenon of oscillating airflow in such upward roadways were simulated, and it was concluded that when the phenomenon of airflow oscillation occurs in parallel upward ventilated systems, the number of airflow oscillations is significantly reduced by increasing the initial airflow velocity. The amplitude of each oscillation is reduced. When the initial wind speed was 0.2 m/s, several wind flow reversals and airflow oscillations occurred. When the initial wind speed increased to 0.35 m/s, two wind flow reversals occurred, and the maximum wind speed difference after the reversal was 0.2 m/s. At an initial wind speed of 0.5 m/s, a single reversal of airflow was observed, but no oscillatory behavior was noted. After the reversal, the maximum wind speed difference was 0.16 m/s, and the maximum wind speed difference was 0.16 m/s in the range of 0.5 m/s-0.65 m/s. The difference in the reversal was 0.12 m/s. The study results are of great significance for preventing and controlling the phenomenon of underground airflow oscillation and ensuring the safe production of coal mines.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106132"},"PeriodicalIF":4.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144195104","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":"Wind-induced loads on photovoltaic (PV) panels on low-sloped gable roofs: Panel size effects","authors":"Mahmoud Abdallah ,&nbsp;Ioannis Zisis","doi":"10.1016/j.jweia.2025.106129","DOIUrl":"10.1016/j.jweia.2025.106129","url":null,"abstract":"<div><div>This study evaluates the aerodynamic performance of photovoltaic (PV) panels mounted on gable roofs, examining the effects of panel size, orientation (portrait vs. landscape), and coverage (full vs. partial) on wind-induced loads. Twelve configurations were tested at the NHERI Wall of Wind Experimental Facility to assess PV panel wind load distributions. Results indicate that small and medium panel arrays in landscape orientation exhibit deeper mean and peak uplift (more negative <span><math><mrow><msub><mi>C</mi><mi>f</mi></msub></mrow></math></span>) than in portrait, whereas large arrays show negligible orientation dependence. Larger panel arrays—especially when installed in landscape orientation with full roof coverage—generally exhibit lower uplift coefficients (normalized per unit area) and smoother pressure distributions than smaller ones. In contrast, portrait orientation reduces overall uplift but may concentrate wind loads along vertical edges, occasionally leading to higher localized suctions under oblique winds. Area-averaged suction coefficients only occasionally exceeded ASCE 7–22 thresholds, while positive pressure forces frequently surpassed design limits, particularly for small and medium panels in landscape orientation and under both full and partial coverage. These findings underscore the importance of refining ASCE standards to better capture the aerodynamic behavior of PV panels with varying sizes and orientations. Future research should explore other roof types and slopes to support broader codification of PV wind load design.</div></div>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"263 ","pages":"Article 106129"},"PeriodicalIF":4.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189809","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":"Resistant Chronic Venous Leg Ulcers: Effect of Adjuvant Systemic Hyperbaric Oxygen Therapy Versus Venous Intervention Alone.","authors":"Amr M Elsharnoby, Ahmed H El-Barbary, Ali E Eldeeb, Hassan A Hassan","doi":"10.1177/15347346221100891","DOIUrl":"10.1177/15347346221100891","url":null,"abstract":"<p><p><i>The aim of this study</i> was to assess the adjuvant efficacy of adding systemic hyperbaric oxygen therapy (HBOT) to definitive venous intervention for healing of resistant chronic venous leg ulcers (VLUs). From 97 chronic VLUs, 63 were subjected to a pre-study standard wound care. Thirty three ulcers failed to achieve 50% size reduction, after the 4-weeks standard care, and were allocated to be treated with: HBOT plus venous intervention (n = 17), or venous intervention alone (n = 16). Primary outcomes were the change in ulcer area, complete healing frequency and time, as well as ulcer recurrence. There was a history of recurrent ulcer (82.3% vs. 69%) in HBOT versus venous intervention groups, respectively. The comparison between both groups with regard to area change showed non-significant difference after 3 months of therapy, while there was a significant difference at 6 and 12 months. A significant positive correlation was found between the HBO sessions numbers (20-40) and the rate of ulcer size reduction. Ulcer complete closure after 3 months was observed in (41.7%) of HBOT group, versus (23%) in venous intervention group; (p = 0.33). After 12 months, complete closure was observed in (83.3%) of HBOT group, versus (53.8%) in venous intervention group; (p = 0.02). The mean time of complete closure was significantly shorter in HBOT group, (p = 0.001). HBOT may be effective as adjuvant to venous intervention in treatment of chronic resistant VLUs, it should be reserved for persistent ulcer. Randomized controlled trials with larger numbers is still needed to elucidate its exact role and specific indications.</p>","PeriodicalId":54752,"journal":{"name":"Journal of Wind Engineering and Industrial Aerodynamics","volume":"36 1","pages":"444-451"},"PeriodicalIF":4.2,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75295494","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}