A5100755936- Radioactivity and Radon Measurements
- Radiation Detection and Scintillator Technologies
- Geophysical Methods and Applications
- Radioactive contamination and transfer
- Nuclear Physics and Applications
- Graphite, nuclear technology, radiation studies
- Soil Carbon and Nitrogen Dynamics
- Nuclear and radioactivity studies
- Nuclear materials and radiation effects
- Atomic and Subatomic Physics Research
- Rock Mechanics and Modeling
- Primary Care and Health Outcomes
- Food Quality and Safety Studies
- Biochemical effects in animals
- Systemic Lupus Erythematosus Research
- Microwave Imaging and Scattering Analysis
- Physical Education and Training Studies
- Nuclear reactor physics and engineering
- Plant nutrient uptake and metabolism
- Patient Satisfaction in Healthcare
- Soil and Unsaturated Flow
- Rice Cultivation and Yield Improvement
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Radiation Dose and Imaging
East China University of Technology
2025
Hengyang Normal University
2021-2024
Xiamen University
2024
Oklahoma State University
2023
Anhui University of Technology
2005
Kiel University
1973
Rice University
1973
University of Birmingham
1973
Illinois Archaeological Survey
1973
United States Geological Survey
1973
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. Rice production is increasingly challenged by irrigation water scarcity, however covering paddy rice soils with films (ground cover system: GCRPS) can significantly reduce demand as well overcome temperature limitations at the beginning of vegetation period resulting in increased grain yields colder regions seasonal shortages. It has been speculated that soil aeration and under GCRPS may result losses organic carbon nitrogen stocks. Here we report on a regional scale experiment,...
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,...
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...
Abstract Radon and its decay products emit internal radiation in the respiratory system upon inhalation, which is a significant contributor to development of lung cancer humans. Accurate measurement radon concentration undoubtedly very important. Among commonly used methods, electrostatic collection method stands out. This involves counting energy spectrum peaks alpha particles, generated by daughters Po-218 Po-214, are collected on surface semiconductor detector determine concentration....
Abstract Endosomal single-stranded RNA-sensing Toll-like receptor-7/8 (TLR7/8) plays a pivotal role in inflammation and immune responses autoimmune diseases. However, the mechanisms underlying initiation of TLR7/8-mediated signaling remain to be fully elucidated. Here, we demonstrate that miR-574-5p is aberrantly upregulated tissues lupus prone mice plasma patients, with its expression levels correlating disease activity. binds activates human hTLR8 or murine ortholog mTlr7 elicit series...
As Rn-222 decays, an alpha particle is emitted and the residual polonium nucleus recoils in opposite direction. At end of recoil path, 88% atoms have a positive charge 12% are neutral. The electric potential distribution 60 ml hemispherical internal cell radon monitor based on electrostatic collection studied for reducing combined probability positively charged Po-218 OH- produced by ionization water vapour air. COMSOL software used to simulate method at 27°C, pressure 0.1 Mpa. For improving...
Abstract Developing an ultra-high sensitivity electrostatic collection radon monitor benefits the scientific experiments of China Jinping Underground Laboratory. Here, a one cubic meter vessel with multi-layer hemispherical metal grid was designed to increase efficiency positively charged Po-218 ions. The 3D model giant constructed using COMSOL Multiphysics simulation software, and potential electric field distributions in were simulated. Numerical results obtained according different radii...