Yanshan University

A Photocurable Conductive Hydrogel with Synergistic Electron and Ion Transport for Long-Term, High-Fidelity Electroencephalography Acquisition

Abstract Long-term, high-fidelity electroencephalography acquisition requires bioelectronic interfaces that simultaneously exhibit low skin–electrode impedance, stable electrical conductivity, mechanical compliance, and environmental stability. However, most conductive hydrogels...

Regulating Sodium Deposition Behavior via Polar Functional Group‐Based Interfacial Engineering on an Industrial‐Scale Anode for High‐Performance Na‐CO 2 Batteries

ABSTRACT The development of sodium‐carbon dioxide (Na‐CO 2 ) batteries is crucial for renewable energy utilization and CO 2 fixation. However, their practical application is severely hindered by Na dendrite formation coupled with aggressive CO 2 electro‐/chemical corrosion, and e...

A hypergraph-based dispatchable potential forecasting method for virtual power plants under price incentives

Accurate prediction of the dispatchable potential of a virtual power plant is fundamental to its participation in electricity markets and ancillary grid services. Existing studies often overlook higher-order interactions among heterogeneous distributed resources and their coupled...

Design of Single-Stage Management System for Grid-Connected Photovoltaic Sustainable Power Generation and Its HVRT Technology with Energy Storage Coordination

With the rapid development of sustainable photovoltaic power generation, energy-storage-coordinated grid-connected photovoltaic systems have been widely adopted to stabilize power output and enhance grid adaptability. Aiming at the low fault tolerance of conventional photovoltaic...

Twinned-magnesium metal negative electrodes enable reversible magnesium electrodeposition

Abstract The favourable thermodynamic properties of magnesium make it a promising negative electrode for rechargeable Mg-metal batteries. However, parasitic side reactions and uncontrolled deposition at the unstable electrode/electrolyte interface severely hinder reversible elect...

Human-like memory empowers embodied robots for long-term object navigation

Abstract Effortless object finding by humans, even in cluttered or unseen environments, relies on the seamless integration of perception, memory, and contextual inference. In contrast, embodied robots operating under egocentric perception and partial observability frequently stru...

The effects of cognitive and motor dual-tasks on dynamic stability during stair ascent: a gender-based comparison

Abstract Objective This study aims to examine the impact of dual-task (DT) conditions on dynamic stability during stair ambulation in healthy young adults, with a specific focus on gender differences. The findings show the main effects of dual-task condition and sex, as well as t...

An Improved Droop Control Strategy for Primary Frequency Regulation in Islanded Microgrids Using Distributed Energy Storage

The large-scale integration of renewable energy generation into the grid has led to increased frequency fluctuations in the power grid. Distributed energy storage systems, with their rapid response times, serve as a critical resource for primary frequency regulation. Traditional...

Prescribed-Time Adaptive Robust Force Control of a Pump-Controlled Active Suspension Actuator for Rapid Pressure Build-Up

To address insufficient effective flow, delayed force response, and degraded tracking accuracy of pump-controlled active hydraulic suspension actuators during rapid pressure build-up and frequent reversal, a prescribed-time adaptive robust force control method based on a fixed-ti...

Archeology-inspired enhancement strategy for aluminum alloys

Metal casting naturally produces a fine-grained chill layer at the mold interface, although this surface layer is commonly removed during machining. Inspired by archeological observations of ancient Cu-Sn bronzes, we investigated the effects of preserving this naturally formed me...

Superconducting Hydride Mg2RhH6 Experimentally Achieved at Lower Pressure

Abstract Although tremendous progress has been made in recent years in the field of polyhydride superconductors, the realization of high critical temperature (Tc) superconductivity still relies on formidable high pressures. Searching for superconducting hydrides at lower pressure...

Topology-Evolving Image Encryption Algorithm Utilizing 2D Rosenbrock–Schwefel Hyperchaotic Map

Traditional image encryption methods based on static permutation and diffusion are vulnerable to structural cryptanalysis and usually show limited resistance to channel interference. To address these problems, this paper proposes a robust topology-evolving image encryption algori...

Effective Measurement of the Influence of an Ovoidal Particle Shape on the Tortuosity and Permeability: Theoretical and Numerical Studies

An ovoid is a common particle, which is usually formed by constant extrusion and friction during running water handling. However, there is still debate over how the form of ovoidal particles affects the tortuosity and water permeability of particle packing systems. The tortuosity...

Ultra-Short Hollow-Core Anti-Resonant Fiber Polarization Filter Covering C+L Band Based on SPR Effect

This paper proposes an ultra-short hollow-core anti-resonant fiber (HC-ARF) polarization filter covering the C+L communication band based on the surface plasmon resonance (SPR) effect. The structure consists of six composite tubes, each formed by nesting an elliptical cladding tu...

RTGNet: A Dual-Branch Network Integrating Recurrent Texture and Temporal Dynamics from sEMG for Lower-Limb Joint Angle Prediction

Accurate continuous prediction of lower-limb joint angles from surface electromyography (sEMG) remains challenging because of the nonlinear, non-stationary, and subject-specific nature of sEMG signals, which can reduce robustness and lead to degraded prediction accuracy during hi...

The competition and cooperation mechanism of policy goals in China’s diagnosis-related group: a quantitative analysis based on the BERTopic and Lotka-Volterra models

Aiming at the practical problems such as upcoding and decomposing hospitalizations emerging in China’s Diagnosis-Related Group (DRG) reform, existing studies mostly attribute such issues to aspects like behavioral motivations, which fail to explain the root causes of the problems...

Open-set fault diagnosis of rolling bearings via class similarity-guided graph convolutional adversarial network with adaptive channel feature relation fusion

To address the challenges in open-set fault diagnosis of rolling bearings, such as the vague demarcation of features between known and unknown class faults, as well as the difficulty in capturing the latent correlations among samples, this paper proposes a class similarity-guided...

Heterostructure Engineering of FeS2–MoS2 with Encapsulated Architecture for Long-Term Stability and Fast Kinetics Sodium-Ion Battery Anodes

Abstract Conversion-type transition metal sulfides (TMSs), particularly pyrite-phase FeS2, are promising anodes due to their high theoretical capacity. However, their practical application is hindered by intrinsic drawbacks such as poor electrical conductivity, severe volume expa...

HeterostructureAssembly of Zn-Substituted Fe3O4@NC/CuS@MoS2 for Enhanced ElectrochemicalDetection of Organophosphorus Pesticide Residues

Abstract A hierarchical Zn-substituted Fe3O4@NC/CuS@MoS2 heterostructure was rationally designed for the electrochemical detection of organophosphorus pesticides such as methamidophos and dichlorvos. Hollow Fe2O3 nanospheres were synthesized hydrothermally, followed by Zn-substit...

Copper Ion RemovalMethod and Engineering Dosing PredictionModel Based on Chlorella–Actinomycetes Symbiotic System

Abstract To address the lack of systematic ratio-screening logic and engineering decision-making basis in existing microalgae-bacteria symbiotic systems for heavy metal wastewater treatment, the biological removal systems were constructed using different ratios of Chlorella sp. a...