Hebei University of Science and Technology

Energy Policy and Energy Management in China: Governance Logic and Future Pathways of Structural Transformation

China’s energy policy and management are transitioning from scale expansion to systemic restructuring. During the 14th Five-Year Plan period (2021–2025), renewables accounted for approximately 60% of installed capacity, and the Energy Law took effect. Entering the 15th Five-Year...

A photoinduced, FeX3-catalyzed, stereo- and regio-selective halofunctionalization of olefins with MXn via a radical-polar crossover reaction

The classical reaction for the halofunctionalization of olefins involves hazardous and highly toxic molecular halogens. The goal of chemists is to establish green, inherently safe, highly efficient and sustainable synthetic methods. Here, we report a green approach for the halofu...

UAV path planning via fusion of enhanced RRT* and path-guided Q-learning

This study proposes an unmanned aerial vehicle path-planning framework that integrates improved Rapidly-exploring Random Tree Star (improved RRT*) and Q-learning algorithms (Improved Rapidly-exploring Random Tree Star (IRRT*)-IQL) to address challenges such as low path-planning e...

Locally differentially private graph clustering via structure-preserving graph compression

Abstract Locally differentially private clustering is an effective approach to uncover latent structures in decentralized social graphs while preserving individual privacy. Existing solutions encode graph data using adjacency bit vectors, whose high dimensionality introduces subs...

Enhanced Hydrogen Production via Surface Oxygen Vacancy Regulation in Element-Doped Ni/CeO2 Catalysts

Abstract Steam reforming of methane (SRM) for H2 production is a critically important industrial H2 production pathway that has attracted extensive research. However, catalyst deactivation and instability at high reaction temperatures and low water-to-methane ratios remain pressi...

Spent Iron-Char Catalysts Are Not Waste: A Viewpoint on Integrating Methane Pyrolysis with Steelmaking

Abstract Methane pyrolysis offers a CO2-free pathway to hydrogen production; however, its commercial deployment remains hindered by a stoichiometric constraint: each kilogram of H2 co-produces three kilograms of solid carbon, which rapidly deactivates the catalyst. Conventional s...

Electroenzymatic Cascade for Chiral Hydroxylation of C–H Bond Using In Situ H2O2 Generation

Abstract Unspecific peroxygenase (UPO) catalyzes selective oxyfunctionalization of C–H bonds using H2O2 but suffers from enzyme instability and substrate solubility issues. To address these challenges, a cobalt and nitrogen co-doped carbon nanotubes electrocatalyst with two-elect...

Experimental Study and Reliability Analysis of ESSC–FA–WESS Foamed Lightweight Soil

This study developed ESSC–FA–WESS foamed lightweight soil using early-strength supersulfated cement (ESSC), fly ash (FA), and waste engineering slurry sediment (WESS), and evaluated its performance and reliability. Twelve mixtures combined water-to-binder ratios of 0.55, 0.60, an...

A multi-attribute decoupled learning network for precise segmentation of complex defects on steel surface

In the steel manufacturing industry, precise segmentation of surface defects is critical for achieving high-quality product control. Steel surface defects encompass various types such as cracks, scratches, and weld slag, which exhibit significant disparities in size, shape, and t...

Effects of emotion regulation training on EFL learners’ speaking anxiety, academic engagement, and oral performance: An explanatory sequential mixed-methods design

Speaking anxiety is widely associated with reduced oral participation and performance, but the key unresolved issue is more specific: existing EFL research is dominated by correlational evidence or by interventions that change broad instructional conditions rather than directly t...

Structure-Guided Engineering of Amine Dehydrogenase for Chiral Bulky β -Aryl Amine Synthesis: Dynamic Loop-to-Helix Shift and Hydrogen-Bond Network Reconstruction

Abstract Chiral β-aryl amines are critical structural motifs in various bioactive compounds and pharmaceuticals. Amine dehydrogenases (AmDHs) offer a promising sustainable approach to catalyze the asymmetric reductive amination of β-aryl ketones to chiral β-aryl amines. However,...

A practical non-contact layer thickness measurement method for two-layer clad plates using EMAR

Accurate determination of individual layer thicknesses in multilayer clad plates is essential for quality control and structural integrity assessment. This study proposes an electromagnetic acoustic resonance (EMAR)-based method for layer-thickness measurement of two-layer clad p...

High-Performance Reverse-Mode Liquid Crystal Smart Windows via Co-Optimization of a Phosphate Self-Assembled Interface, a Polyurethane Acrylate Polymer Network, and a Patterned Microstructure

Abstract Reverse-mode polymer-stabilized liquid crystal (RPSLC) smart windows exhibit voltage off transparency and voltage on scattering, which are well aligned with the requirements of daylighting and solar heat insulation in buildings. These characteristics make RPSLC smart win...

Mo-Dopant Mediated Intra-lattice Ultrashort-range Hydrogen Spillover for Ampere-Level Alkaline Hydrogen Evolution

Abstract Hydrogen spillover is an effective strategy to improve the efficiency of the hydrogen evolution reaction (HER), but the challenges remain in creating efficient spillover channels. Herein, an intra-lattice ultrashort-range hydrogen spillover strategy is proposed, which wa...

Study on the degradation performance of LaFeO 3 perovskite catalyst for reactive dyes and the dyeing performance of treated effluent

In this study, perovskite-type LaFeO 3 catalyst was successfully synthesized via the sol–gel method and applied to the catalytic degradation of reactive dye wastewater in the H 2 O 2 system. Experimental results revealed that, under optimized conditions (catalyst dosage = 0.3 g/L...

Stabilizing Grain Boundaries by Flexible Bidirectional Multisite Hydrazide Cations toward High-Performance Inverted Perovskite Solar Cells

Abstract The grain boundary instability induced by defects and tensible strain impedes the realization of high-performance inverted perovskite solar cells (PSCs). Here, we propose a flexible bidirectional multisite additive strategy to stabilize perovskite. (6-(2,5-Dioxo-2,5-dihy...

Quantitative detection of peanut oil adulteration in olive oil via three-dimensional fluorescence spectroscopy and a PARAFAC–BPNN combination

Olive oil as a high-value edible oil is highly susceptible to adulteration in the marketplace, particularly through the addition of low-cost oils, which severely undermines consumer interests and market fairness. In this study, a novel method based on three-dimensional fluorescen...

Iron‐Incorporated Cobalt Phosphate as an Efficient Electrocatalyst for Water Oxidation

ABSTRACT The oxygen evolution reaction (OER) leads to intrinsically sluggish kinetics, requiring a high overpotential and significantly limiting the overall water splitting energy conversion efficiency. Co‐based catalysts have attracted considerable interest for the OER. Numerous...

A Grid-Forming Control Strategy Based on a Hybrid Approach Combining a Physical Model and LSTM for Photovoltaic and Energy Storage Systems

Traditional grid-forming converter (GFC) control faces fundamental challenges in maintaining DC bus stability during rapid power transients, primarily due to the limited dynamic response capability of source-side energy storage devices. To address this, this paper proposes a hybr...

Aerodynamic performance and wake characteristics of a semi-submersible floating wind turbine under platform motion

Conduct overset-mesh-based CFD simulations to quantitatively investigate the aerodynamic performance and wake evolution of a 5 MW semi-submersible floating offshore wind turbine under forced surge and pitch motions. The results demonstrate that platform motions significantly incr...