North China University of Water Resources and Electric Power

Hydraulically Coupled Compressed-Air Energy Storage Systems: A Review of Configurations and Performance with Emphasis on PHCAES

Growing wind and photovoltaic generation increases the demand for large-scale, long-duration energy storage. Pumped hydro compressed-air energy storage (PHCAES) stores and releases energy through pressure transfer between water and compressed air, using air pressure to provide an...

Micron NbC-reinforced Fe-based cladding coatings via EHLA: Microstructure and corrosion

To surmount the drawbacks of conventional laser cladding—including excessive heat buildup, low processing efficiency, and the agglomeration issue of nanoscale reinforcing phases, micron-sized NbC particles reinforced Fe-based cladding coatings were obtained via the Extreme High-S...

Dynamic Response and Progressive Failure of Moraine‐Covered Slopes Under Combined Rainfall and Earthquake Loading

ABSTRACT Rainfall and seismic loading are major factors triggering the instability of moraine slopes widely distributed in the mountainous regions of western China. To investigate the dynamic response and failure mechanisms of moraine soil slopes under combined rainfall and seism...

Anisotropic Creep Characteristics of Sericite Phyllite for Long-Term Service Safety of Tunnel Structures

Foliated metamorphic rock exists widely in the surrounding rock of tunnel structures, underground utility caverns and mountain civil structures, and its laminated foliation structure induces obvious anisotropic time-dependent creep deformation, which seriously threatens the long-...

1D/3D Perovskite Heterostructure via Anion Engineering of Ionic Liquids for High‐Performance Lateral Photodetectors

ABSTRACT Organic‐inorganic hybrid perovskites (OIHPs) have emerged as attractive photoactive materials for next‐generation photodetectors (PDs) due to their facile solution processability and excellent optoelectronic properties. However, the practical applications of perovskite‐b...

Estimation of field-scale crop evapotranspiration from the mechanistic SIF-ET model using the UAV hyperspectral imagery

Accurate estimation of evapotranspiration (ET) is critical for agricultural water management and understanding land-atmosphere interactions. Conventional thermal and optical remote sensing is a powerful tool for ET estimation, but existing methods remain constrained by empirical...

Variable-Amplitude Fatigue Life Prediction of SBS-Modified Asphalt Mixtures with Physical Gel Structures

The service life of SBS-modified asphalt mixtures with physical gel structures is strongly influenced by the loading sequence–interaction coupling effects. However, conventional linear models fail to accurately capture the influence of such coupling effects on fatigue life. This...

Simulation of Acoustic Emission Between Mechanical Seal Interfaces Considering Elastohydrodynamic Lubrication Effects

Acoustic emission (AE) monitoring has been widely employed for condition assessment of mechanical seals. However, the physical origin of high-frequency AE activity under elastohydrodynamic lubrication (EHL) conditions remains insufficiently understood. To address this, a physics-...

Landslide Identification Based on Diverse Remote-Sensing Datasets and Improved Deep Learning Models

Landslides are frequent and destructive geological disasters. Accurate landslide identification is essential for post-disaster reconstruction and preventing secondary disasters. Deep learning has shown considerable potential for recognizing landslide objects from remote-sensing i...

Study on Preparation and Hydration Mechanism of Sand Washing Residue Mud-Based LC3 Cement by Mechanical–Thermal Activation

To enhance the application value of sand washing residue mud (SWRM) and mitigate its adverse environmental impacts, this study focuses on the resource utilization of SWRM. The research employed a combined mechanical–thermal activation method to enhance the activity of SWRM and ut...

Sustainable Optimization of Concrete Transportation Systems for Dam Construction Using a BCMP Closed-Loop Queuing Network

To address the challenges of relying on experience for vehicle allocation in concrete transportation for dam construction—as well as the difficulty in coordinating vehicle capacity, loading/unloading capabilities, and system queuing status—this study focuses on a closed-loop tran...

Integrated crop residue return, film mulching, and irrigation enhance climate resilience of maize production and soil carbon storage in cold regions

Climate change is expected to intensify changes in soil freeze–thaw processes, thereby affecting water availability and agricultural productivity. However, the mechanistic links among climate-induced changes in seasonal freeze–thaw conditions, maize productivity, and soil organic...

Beyond Using AI : Self‐Regulated Pathways to Engagement in AI ‐Assisted Language Learning

ABSTRACT Artificial intelligence (AI) has increasingly reshaped language learning, yet how learners become engaged in AI‐assisted language learning remains insufficiently understood. Drawing on self‐regulated learning theory, this study examined the relationships among AI literac...

Assessment of Local Strain of PVC-P Geomembranes Induced by Particle Cushion Layers

This study investigates the deformation of plasticized polyvinyl chloride (PVC-P) geomembranes (GMBs) on uniform cushions and flat-rounded gravel cushions using a self-developed testing apparatus for GMB deformation and a three-dimensional (3D) laser scanner. Based on the princip...

Characterizing Long-Term Urban Impervious Surface Dynamics and Landscape Pattern Evolution Through an Integrated Area–Density Perspective

Impervious surface expansion is a defining manifestation of urbanization, but changes in total area alone cannot reveal how transitions in development density reshape landscape structure. Adopting an integrated area–density perspective, this study examined impervious surface expa...

Integrating global crop models with knowledge graphs: Evolution, comparison, and future directions

Crop models leverage mathematical methods to simulate plant growth and environmental responses, forming a powerful and critical tool for agricultural decision support in research, management, and policy–making. However, a comprehensive review that systematically integrates global...

The synergistic immobilization mechanism of Cr(VI) and Ni(II) in red mud-based ceramsite fabricated by multi-waste co-sintering

Confronting the dual crisis of hazardous waste accumulation and heavy metal pollution, this study employs a sustainable co-sintering technique at 1150°C for 15 min to transform red mud (RM), excavated soil (ES), and steel slag (SS) into high performance ceramsite. The occurrence...

Carbon Taxation and Regional Cost-Burden Balancing in a Household Plastic-Waste Closed-Loop Supply Chain: An Exact Bilevel Optimization Model

Carbon pricing can change manufacturers’ material choices, while the costs of managing the residual waste remain geographically uneven. We formulate a manufacturer–regulator bilevel model for a household plastic-waste closed-loop supply chain with quantity-dependent recycled-bale...

Diagnosis of abnormal voltage in individual cells and fault trend prediction in energy storage power stations

Abstract During the operation of energy storage power stations, individual cells are prone to voltage inconsistency and abnormal voltage fluctuations due to manufacturing variations, inconsistent aging degrees, and changes in operating conditions. To address this issue, this stud...

Research on the impact mechanical response characteristics of gas containing coal and rock based on RSM

To investigate the dynamic mechanical behavior of gas-containing coal in deep coal mines, dynamic compression tests were conducted on gas-containing coal using a 50 mm diameter split Hopkinson pressure bar (SHPB) system. The central composite design (CCD) method within response s...