A5072637155- Radioactivity and Radon Measurements
- Radiation Detection and Scintillator Technologies
- Radioactive contamination and transfer
- Nuclear Physics and Applications
- Geophysical Methods and Applications
- Dark Matter and Cosmic Phenomena
- Particle Detector Development and Performance
- Microwave Imaging and Scattering Analysis
- Nuclear and radioactivity studies
- Graphite, nuclear technology, radiation studies
- Atomic and Subatomic Physics Research
- Radioactive Decay and Measurement Techniques
- Radiation Dose and Imaging
- Neutrino Physics Research
- Atmospheric and Environmental Gas Dynamics
- Soil Carbon and Nitrogen Dynamics
- Lung Cancer Diagnosis and Treatment
- Radiomics and Machine Learning in Medical Imaging
- Radiation Therapy and Dosimetry
- Radiation Shielding Materials Analysis
- COVID-19 diagnosis using AI
- Air Quality Monitoring and Forecasting
- Landslides and related hazards
- Methane Hydrates and Related Phenomena
- Soil and Unsaturated Flow
University of South China
2023-2025
Hengyang Normal University
2020-2025
Jinzhou Medical University
2024
Abstract Radon-222 (Rn-222) exhalation rate is vital for estimating radiation risk from many kinds of materials. AlphaGUARD measures the radon concentration based on ionization chamber principle, which currently recognized as a reference instrument to measure radon. In China, measurements are performed by operated in flow-through mode device verify measurement accuracy. These both open and closed loop. can fast rapidly variation chamber, tightly pressed against surface medium accumulate...
Abstract Radon exhaled from rocks, building materials, and soil can be harmful to human health, so it is necessary measure radon its exhalation rate. In this paper, a novel method proposed simulate different medium surface by using solid Rn-222 source, the rate adjusted replacing accumulation chambers with bottom areas. Firstly, an experiment was done determine activity of then theoretical quickly calculated relationship between source area chamber. Three sets comparative experiments were...
Abstract Imaging plates can measure isotopes with alpha decay (such as radon and its progeny, americium, so on). However, the detection efficiency of imaging is affected by particle energy, types plates, overlapping effect. In this study, simulations were performed to analyze relationship between these three influence factors. The research findings suggest that BAS-TR BAS-MS are well-suited for particles energy levels below 6.83 MeV above, respectively. track overlap effect correction method...
Abstract Background To evaluate the efficiency of artificial intelligence (AI)-assisted diagnosis system in pulmonary nodule detection and training junior radiology residents medical imaging students. Methods The participants were divided into three groups. Medical students Grade 2020 Jinzhou University randomly Groups 1 2; Group 3 comprised residents. used traditional case-based teaching mode; 2 ‘AI intelligent assisted system’ mode. All performed localisation, grading qualitative diagnosed...
Abstract The collection efficiency of the hemispherical internal cell radon monitors depends on many factors, with distribution electric field and relative humidity air being particularly important. COMSOL is used to simulate an a plastic upper surface. Simulation results show relatively uniform gradient field. Assuming that felt by positively charged Po-218 ions in linear function its radial coordinate, mathematical model proposed. From this model, we obtained following: 1) under same...
Abstract Accurately measuring Rn-220 is crucial for evaluating natural radiation exposure. For the large volume of normal scintillation cell, detection efficiencies different energy α particles decayed from Rn-222, and their progeny are varied. To address this, two systems low-pressure cell were designed to make shortest range with minimum Rn-222 longer than longest distance between any points in by reducing air pressure. Thus, same. The efficiency can be obtained standard radon chamber,...
Abstract The radioactive decay of radon (Rn-222) and its progenies are significant background sources in an extremely low environment, interfering with investigation like detecting dark matter observing neutrinos. In this paper, a 1000 L ultra-high sensitivity monitor for China Jinping Underground Laboratory (CJPL) based on electrostatic collection Au-Si surface barrier detector was developed. is capable distinguishing Rn-220 from the energy spectrum effectively eliminating any interference...
The importance of determining the radon exhalation rate from water surface is emphasized by increased use and its daughter products as tracers in large-scale circulation studies atmosphere. There were many methods to measure surface. With development measurement instruments on soil, rock building materials, so can be more accurately measured applying these improved instruments. In this paper, a cuboid accumulation chamber surrounded foam boards RAD7 used at three different positions Yixin...
Abstract Two models can be used to measure the radon exhalation rate with a ventilation chamber. The first is custom model flow meter, and second improved without meter. As established standard facilities can't simulate any medium measured by adjusting effective decay constants as required, numerical simulation useful compare two for measuring under different constants. Three rates were simulated rates, results confirmed that quick accurate even when very low. While only calculate far larger...