China General Nuclear Power Corporation (China)

Molecular dynamics insights into bubble nucleation of liquid sodium on hybrid wettability surfaces: Temperature dependence and scale-induced site inversion

Molecular dynamics simulations were performed to investigate the bubble nucleation characteristics of liquid sodium on hybrid-wettability surfaces composed of alternating hydrophilic and hydrophobic stripes. Wall temperature T wall and stripe width w were varied independently to...

Cross-scale mechanistic investigation of multistage carbon dioxide pool flash evaporation with vertical heterogeneity

Pool flash evaporation is a canonical liquid–vapor phase-change process driven by rapid depressurization, yet the stage-dependent flow-pattern evolution and vertical thermodynamic heterogeneity remain poorly understood. Existing heat and mass transfer models treat the process as...

Frost Heave Evolution and Thermo-Hydro-Mechanical Coupling Analysis of Transmission Tower Foundations in Silty Clay of Seasonally Frozen Regions

Frost heave of transmission tower foundations in seasonally frozen regions endangers cold-region power infrastructure and grid security. This study establishes a coupled model to simulate foundation freeze-thaw and frost heave processes, validated via laboratory tests. The result...

Experimental study and modeling Investigation on counter-current flow limitation phenomenon in reactor downcomer with DVI injection

During the refilling phase of a large-break loss-of-coolant accident (LBLOCA), the large upward flow of steam generated in the core region enters the reactor downcomer, causing the cooling water to fail to descend into the reactor core in time. This results in counter-current flo...

Adaptive Soft Robot for Complex Multiple Scenes: Navigating Pipelines, Valves, and Pressure Vessels

ABSTRACT Pipelines, valves, and pressure vessels (PVs) are vital components in nuclear, thermal power, and chemical systems, operating under high temperature and pressure over extended periods, leading to safety risks. Ensuring their safe operation requires regular inspections, w...

A Frequency-Domain Blind Deconvolution Method Based on Weight Feature Extraction and Its Application in Rolling Bearing Fault Diagnosis

Rolling bearing faults typically exhibit sideband structures in the frequency domain, yet conventional blind deconvolution methods operate in the time domain and rely on prior fault periods. To reduce this dependence and broaden applicability, this paper presents a frequency-doma...

Experimental investigation and strength evaluation of steel-plate composite wall-to-wall L- and T-joints with different novel shear reinforcement

The steel-plate composite wall-to-wall joint configuration specified in current design codes is particularly susceptible to shear failure. Existing experimental studies have reached contradictory conclusions regarding whether shear reinforcement can enhance joint strength. The in...

Temperature-dependent longitudinal-wave acoustoelastic behavior of concrete

The acoustoelastic effect provides a physically grounded basis for evaluating internal stress in structures, but temperature variation can substantially interfere with acoustoelastic stress evaluation in concrete. Nevertheless, the influence of temperature on the acoustoelastic r...

Impact of ideal scaling on BEPU uncertainty and sensitivity analysis of the ACME test facility

In applications of the BEPU approach, uncertainty analyses are typically performed only at the test facility or the reactor, and the impact of model scale on uncertainty quantification remains an open issue to be further investigated. As a first step toward addressing this issue,...

A PSA-informed methodology for alternative source term evaluation in HPR1000

Accurate fission product source term assessment is crucial for nuclear safety analysis, equipment qualification, and emergency planning. Traditional deterministic approaches relying on a single conservative scenario fail to capture the enhanced safety features of advanced reactor...

Temperature Effects on Interfacial Area Concentration and Void Fraction in LBE-N2 Bubbly Flow

Temperature-dependent local two-phase flow parameters in lead–bismuth eutectic (LBE)–gas bubbly flows are essential for validating the closure models used in safety analyses of steam generator or heat exchanger tube rupture accidents in lead-cooled fast reactors. However, publish...

Single-Component Photomultiplication-Type Photodetector Based on Donor–Acceptor Copolymer with Bias-Tunable Broadband to Narrowband Response

Abstract All-polymer photodetectors, owing to their remarkable advantages of flexibility and mechanical durability, exhibit demonstrated potential for application in the field of wearable technology. Nevertheless, the frequently employed double-component active layer structure is...

An edge AI‐powered power converter hardware platform for practical end‐to‐end AI‐to‐converter closed‐loop deployment

Abstract Modern power systems require increasingly flexible and responsive power conversion, driving the need for power converters with enhanced controllability and adaptability, where artificial intelligence (AI) plays a key role in enabling intelligent decision making, adaptive...

An Integrated Fault Localization and Diagnosis Method for NPP Temperature Sensor Systems Based on Abnormal Feature-GCN

Temperature sensor systems are critical for nuclear power plant (NPP) condition monitoring, whose reliability underpins unit safety and stability. Fault localization and diagnosis are essential to sustain their stable service. Conventional Principal Component Analysis (PCA) and G...

Association of the triglyceride-glucose index with prostate cancer risk and prognosis: a systematic review and meta-analysis

The triglyceride-glucose (TyG) index has emerged as a convenient and reliable surrogate marker for insulin resistance (IR) and has been linked to an increased risk of several malignancies. However, its association with prostate cancer (PCa) risk remains uncertain. We therefore co...

High-Capacity and Rapid Radioiodine Capture from Gasand Water by Triazine-Functionalized Collagen Fibers

Abstract Effective elimination of radioactive iodine species from nuclear waste is critical for ecological protection, human health safety, and the sustainable development of nuclear energy. Herein, a collagen fiber-based iodine adsorbent (ACFT) was fabricated via glutaraldehyde-...

Bioinspired Large-AreaPolymeric Cucurbituril Monolayerswith Ultrahigh-Density Nanopores Enabling Reversible Charge-Gatingof Ion Transport via Host–Guest Recognition

Abstract Achieving precise control over ion and molecular transport under subnanometer confinement, especially beyond passive sieving, remains challenging in nanofluidics and membrane science. Here, we present a bioinspired strategy that enables the formation of subnanometer chan...

Investigation of Multi-parameter Synchronous Detection Technology for Radioactive Aerosols in Spent Fuel Dissolution Process

Spent-fuel dissolution produces multi-nuclide, high-activity aerosols. Gross α/β CAMs are prone to interference and slow response, limiting timely dose assessment and alarms. We developed an integrated multiparameter synchronous detection system to simultaneously measure activity...

The Cambrian Magmatic Evolution in the Damara Belt, Namibia: Constraints from Garnet-Bearing Granites

Abstract Garnet is a petrogenetic key indicator, common in igneous and medium- to high-pressure metamorphic rocks. It provides valuable constraints for pressure–temperature–time paths in orogenic belts and offers insight into magma generation, evolution, and crystallization. To i...

Flame Retardancy of Vinyl Acetate–Ethylene Emulsion Adhesives Modified with Intumescent Flame Retardants and Fly Ash

Vinyl acetate–ethylene copolymer emulsion (VAE) adhesives are widely used in formaldehyde-free wood-based panels and coating systems, but their inherent flammability limits broader application in fire-safety-demanding fields. In this work, fly ash (FA), an industrial solid waste...