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  • Open Access

    ARTICLE

    Mapping Characteristics of the Filtration Performance of Gas Turbine Inlet Air Filters under Typical Environmental Conditions

    Yan Shi1,2,*, Rong Zhuang2, Yunshan Bai2, Wenguo Xiang1, Cai Liang1

    Energy Engineering, Vol.123, No.8, 2026, DOI:10.32604/ee.2026.082971 - 12 July 2026

    Abstract The performance evaluation of gas turbine inlet air filtration systems is commonly based on standardized laboratory testing; however, discrepancies frequently arise between laboratory results and actual operating performance. In this study, an on-site testing apparatus was developed to investigate filtration behavior under realistic operating conditions. Field measurements were conducted to analyze pressure loss evolution, particle-size-dependent filtration efficiency, and the influence of environmental parameters, including temperature, humidity, and ambient particulate concentration. Results show that filter pressure loss increased progressively with operational loading, while short-term fluctuations were associated with variations in environmental conditions. Filtration efficiency exhibited an… More >

  • Open Access

    ARTICLE

    Turbulent Flow and Thermal-Hydrodynamic Optimization in Evaporator Tubes with Transverse Partitions

    Omar Ghoulam1, Hind Talbi1,2, Kamal Amghar1, Hamza Faraji3,*, Saloua Senhaji4, Ismael Driouch1

    Energy Engineering, Vol.123, No.8, 2026, DOI:10.32604/ee.2026.076813 - 12 July 2026

    Abstract This study numerically investigates turbulent flow and thermal performance in evaporator tubes equipped with rectangular partitions positioned at different locations. Two configurations are analyzed: (A) partitions on the top wall, center of channel, and bottom wall, and (B) partitions on the bottom wall, center of channel, and top wall. In addition, we examine the effect of varying the positions of the obstacles (S=D2,S=D,S=5D4, andS=3D/2) and the inclination angle (θ=60, θ=75, θ=90, θ=105 and θ=120) of the detached obstacle relative to the walls, an innovative aspect that had not been addressed in previous studies. More >

  • Open Access

    ARTICLE

    Servant leadership and task performance: The chain mediating role of perceived insider status and responsible behavior

    Boqiang Zong1, Yungui Guo2,*, Ningwei Cai3

    Journal of Psychology in Africa, Vol.36, No.3, pp. 311-319, 2026, DOI:10.32604/jpa.2026.078831 - 30 June 2026

    Abstract This study investigated the role of perceived insider status and responsible behavior in the relationship between servant leadership and task performance in the manufacturing, retail, and service sectors. Self-reported survey data were collected from 667 employees across multiple Chinese organizations (females = 52.2%, predominantly aged 26–45 72.0%) and were analyzed using structural equation modeling. Results of testing a sequential mediation model showed that servant leadership is associated with higher task performance. Responsible behavior acts as a partial independent mediator, accounting for 57.24% of the total effect. Importantly, perceived insider status and responsible behavior were found More >

  • Open Access

    REVIEW

    Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate)-Based Hydrogel Strain Sensors: Materials, Fabrication, Performance, and Applications

    Gen Li1,2, Shuhan Liu2, Junhao Cheng2, Ting He2, Zhihong Chen1,*, Baoyang Lu1,2,*

    Journal of Polymer Materials, Vol.43, No.2, 2026, DOI:10.32604/jpm.2026.079972 - 30 June 2026

    Abstract Hydrogel strain sensors are widely used in wearable electronics, human-machine interfaces, flexible electronics, owing to their ability to convert mechanical deformation into electrical signals. This function requires sensor materials to possess both high compliance and electrical conductivity. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has emerged as an ideal candidate for hydrogel strain sensors due to its soft and flexible mechanical properties, tunable mechanical performance, mixed ionic-electronic conductivity, and excellent processability. Although extensive research has been conducted on PEDOT:PSS-based hydrogel strain sensors, there is currently no systematic review that elucidates the translation pathway from high-performance materials design and advanced fabrication More >

  • Open Access

    ARTICLE

    Mechanical Performance and Deformation Mechanisms of Additively Manufactured Lattice Structures under Quasi-Static Compression and Finite Element Analysis

    Izzat bin Mat Samudin1, Muhammad Adam Johan bin Muhammad Affindy1, Quanjin Ma2, Nabilah Afiqah binti Mohd Radzuan1,*

    Journal of Polymer Materials, Vol.43, No.2, 2026, DOI:10.32604/jpm.2026.077219 - 30 June 2026

    Abstract Lattice structures fabricated through additive manufacturing (AM) offer exceptional strength-to-weight ratios, as their geometries allow them to carry high loads with far less material than solid components. When paired with polylactic acid (PLA), they combine biodegradability with ease of processing, allowing the structures to be produced efficiently while also offering an environmentally friendly material option. However, comparative studies across different lattice types under uniform conditions remain limited, as many existing studies only focus on a single geometry type. Therefore, this study investigates the compressive performance of PLA lattice structures, which include body-centered cubic (BCC), honeycomb… More > Graphic Abstract

    Mechanical Performance and Deformation Mechanisms of Additively Manufactured Lattice Structures under Quasi-Static Compression and Finite Element Analysis

  • Open Access

    ARTICLE

    Thermo-Hydraulic Performance and Entropy Generation Analysis of Serpentine and Straight Tubes with Twisted Tape Inserts Using SST k-ω Turbulence Modeling

    Conghai Chen1, Dingran Sun2, Yikai Chen2, Jianxin Xu2,*, Hua Wang2

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.6, 2026, DOI:10.32604/fdmp.2026.082984 - 30 June 2026

    Abstract Serpentine heat exchangers are extensively used in energy and chemical engineering owing to their compact geometry and high thermal performance. To improve their efficiency, three-dimensional numerical simulations are conducted using the SST k-ω turbulence model for both serpentine and straight tubes fitted with twisted tape inserts. Three twist ratios (y = 5.77, 8.57, 12.48) are examined across a Reynolds number range of 10,000 to 22,000. Results show that the average Nusselt number increases with Reynolds number, while the friction factor decreases. In particular, due to curvature-driven secondary motions, serpentine configurations consistently outperform straight tubes in thermal… More >

  • Open Access

    ARTICLE

    Bond Behavior of NPR Bar/Steel Strands with Ultra-High-Performance Concrete

    Qinfeng Pan1, Wei Zhang1, Hao Chen1, Lin Pang2, Xiang Liu1,*, Chun Chieh Yip3

    Structural Durability & Health Monitoring, Vol.20, No.4, 2026, DOI:10.32604/sdhm.2026.083328 - 30 June 2026

    Abstract Ultra-high-performance concrete (UHPC) exhibits high strength, toughness, and durability, making it an excellent candidate for integration with novel high-ductility, high-strength negative Poisson’s ratio (NPR) steel bars. This combination shows promising applications in the fields of bridges and buildings. This study investigates the bonding performance of various types of NPR bars (smooth NPR bars, spiral rib NPR bars, and NPR steel strands) with UHPC as the concrete matrix. It examines the effects of bond length, bar diameter, and NPR bar type on bonding performance, comparing these results with those of normal concrete (NC). A predictive model… More >

  • Open Access

    ARTICLE

    Advanced Machine Learning for Sustainable Concrete Strength Prediction and Resource Optimization

    Nayeemuddin Mohammed1,2, Tahar Ayadat1,2,*, Andi Asiz1,2, Nadeem Pasha3

    Structural Durability & Health Monitoring, Vol.20, No.4, 2026, DOI:10.32604/sdhm.2026.080495 - 30 June 2026

    Abstract Significant efforts have been made to increase the strength of concrete by using industrial waste such as fly ash and steel slag as partial substitutes for concrete in concrete. However, predicting the concrete’s compressive strength is a challenge as it is influenced by several factors such as the shape and size of the aggregate, the water-ratio balance. This study examines the predictive capability of three deep learning models: Bagging Extreme Gradient Boosted Model (BXGBM), Deep Random Vector Functional Link (DRVFL), and Kernel Extreme Learning Machine (KELM) on the prediction for compressive strength of concrete. The… More >

  • Open Access

    ARTICLE

    Experimental and Numerical Investigation of Steel Frame-UHPC Composite Deck for Construction Trestles

    Wu Yang1, Quan Xu1, Zhimin Zhou2, Mingtao Ye3, Shaohua He3,*

    Structural Durability & Health Monitoring, Vol.20, No.4, 2026, DOI:10.32604/sdhm.2026.079184 - 30 June 2026

    Abstract Ultra-high performance concrete (UHPC) exhibits exceptional mechanical properties and durability, making it highly suitable for infrastructure applications. This paper presents the design and evaluation of an innovative steel frame-UHPC composite deck intended for temporary trestles subjected to heavy construction loads and corrosive environments. The mechanical performance of the proposed composite deck was investigated through advanced finite element modeling and full-scale experimental testing. Structural responses of the trestle structure equipped with the composite deck under a 150-t crawler crane were analyzed numerically, while a three-point bending test on a full-scale steel frame-UHPC composite deck determined its… More >

  • Open Access

    ARTICLE

    A Feasibility Study of a Comprehensive Evaluation Method for Bridge Static and Dynamic Performance Based on Trend Analysis of Monitoring Data

    Yongjun Lu1, Zhili Guo2, Yongze Ye3, Xin Liu4, Yao Jin5, Xiang Xu4,6,*

    Structural Durability & Health Monitoring, Vol.20, No.4, 2026, DOI:10.32604/sdhm.2026.078396 - 30 June 2026

    Abstract To fully leverage structural health monitoring data for bridge condition assessment, this study proposes a comprehensive evaluation method that integrates static and dynamic indicators using monitoring data, and demonstrates its feasibility through a short-term monitoring-based trend analysis on a newly built bridge. First, based on statistical principles, the Weibull distribution is employed to extract the dead-load component from static monitoring data. Building upon this, a static performance evaluation method is established by incorporating spatial uniformity and trend non-uniformity coefficients. Subsequently, spectral analysis is performed on the main girder acceleration data to extract fundamental frequency information… More >

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