A5040252666- Radiation Therapy and Dosimetry
- Radiation Detection and Scintillator Technologies
- Spaceflight effects on biology
- Radiation Dose and Imaging
- Solar and Space Plasma Dynamics
- Radiation Effects in Electronics
- Wireless Signal Modulation Classification
- Ionosphere and magnetosphere dynamics
- Radioactivity and Radon Measurements
- Advanced X-ray and CT Imaging
- Plant Genetic and Mutation Studies
- Atomic and Subatomic Physics Research
- Muscle activation and electromyography studies
- Infrared Target Detection Methodologies
- Prosthetics and Rehabilitation Robotics
- Smart Agriculture and AI
- Graphite, nuclear technology, radiation studies
- Digital Radiography and Breast Imaging
- Genetics, Aging, and Longevity in Model Organisms
- Orthopaedic implants and arthroplasty
- Planetary Science and Exploration
- Radiation Effects and Dosimetry
- Balance, Gait, and Falls Prevention
- Biofield Effects and Biophysics
- Satellite Communication Systems
National Space Science Center
2014-2025
Chinese Academy of Sciences
2014-2025
Third Hospital of Hebei Medical University
2022-2024
Hebei Medical University
2022-2024
Space Engineering University
2018-2024
Xi'an Jiaotong University
2015-2021
Shenzhen Polytechnic
2013-2017
Rensselaer Polytechnic Institute
2008-2010
National Institute for Radiological Protection
2006-2009
Tsinghua University
2006
Human exploration of the Moon is associated with substantial risks to astronauts from space radiation. On surface Moon, this consists chronic exposure galactic cosmic rays and sporadic solar particle events. The interaction radiation field lunar soil leads a third component that neutral particles, i.e., neutrons gamma Lunar Lander Neutrons Dosimetry experiment aboard China's Chang'E 4 lander has made first ever measurements both charged particles on surface. We measured an average total...
Computational phantoms representing workers and patients are essential in estimating organ doses from various occupational radiation exposures medical procedures. Nearly all existing phantoms, however, were purposely designed to match internal external anatomical features of the Reference Man as defined by International Commission on Radiological Protection (ICRP). To reduce uncertainty dose calculations caused variations, a new generation varying body sizes is needed. This paper presents...
The Space Radiobiological Exposure Facility (SREF) is a general experimental facility at the China Station for scientific research in fields of space radiation protection, biology, biotechnology, and origin life. provides an environment with controllable temperatures experiments organic molecules model organisms such as small animals, plant seeds, microorganisms. cultivation animals can be achieved use microfluidic chips images videos captured by microscopy. SREF also includes linear energy...
ObjectiveIn hip disease patients, pain and movement restrictions might cause changes in bone strength increase the likelihood of falls, finally leading to fracture. The aim this study was identify incidence of, characteristics risk factors for fracture patients with existing disease.MethodsThis a retrospective cohort study. Patients treated at both outpatient inpatient departments our institute were identified by searching electronic medical record system followed retrospectively occurrence...
A high-resolution whole-body voxel model called CAM representing the Chinese adult male was constructed in this paper based on a previous individual model. There are more than 80 tissues and organs CAM, including almost all required ICRP new recommendation. The mass of has been adjusted to reference data. Special considerations were given gross spatial distribution various bone constituents as realistically possible during construction site-specific skeleton. Organ dose conversion...
In vivo radiobioassay is integral to many health physics and radiological protection programs dealing with internal exposures. The Bottle Manikin Absorber (BOMAB) physical phantom has been widely used for whole-body counting calibrations. However, the shape of BOMAB phantoms-a collection plastic, cylindrical shells which contain no bones or organs-does not represent realistic human anatomy. Furthermore, workers who come in contact radioactive materials have rather different body size. To...
Abstracts Space biological effects are mainly a result of space radiation particles with high linear energy transfer (LET); therefore, accurate measurement LET is vital. The in low Earth orbits composed high‐energy galactic cosmic rays (GCRs), solar energetic particles, belts, the South Atlantic Anomaly, and albedo neutrons protons scattered from Earth's atmosphere. CR‐39 plastic nuclear track detectors sensitive to best passive measure radiation. method that employs can all spectra...
A site-specific skeleton voxel model for a Chinese adult male was constructed in this paper upon previous individual model. The whole divided into 19 bones and bone groups; the mass of various tissues at each site, e.g. red marrow, specified according to Asian reference data distribution from ICRP Publication 70. resultant (called CAM) has resolution 1.741 mm x plane, total is 8397.8 g which almost equal value. Dose coefficients marrow surface CAM were calculated, then compared with those...
The radiation damage effect is relatively serious during spacecraft operation in orbit. To know the real cumulative dose orbit accurately, a detector carried on FY-4B satellite. It comprises one electric control unit and three detectors, with total of four payloads. Each includes five dose-monitoring points corresponding to different shielding thicknesses, which are mainly used for measurement depth. Three detectors same function installed X, Y Z positions can detect directions has...
The diagnostic value of next-generation sequencing (NGS) blood samples from patients with periprosthetic joint infection (PJI) after total hip arthroplasty (THA) was evaluated by comparing it drainage fluid NGS and bacterial culture. study designed as a retrospective test. Thirty-six infected were diagnosed PJI according to the Musculoskeletal Infection Society (MSIS) criteria 57 volunteers included in our study. culture chosen detect THA. Blood collected for NGS, fluid, which at same time...
Abstract The orbit of BeiDou satellite system is a very ideal space environment monitoring area. radiation dosimeters are present on this series navigation satellites, and they respectively installed in the x, y z positions. A charge detector cabin used for deep charging potential. Radiation select 100 nm P-channel metal oxide semiconductor (PMOS) sensors, whose range can reach 2 × 10 6 rad (Si). In circuit design part, “zero temperature coefficient” current PMOS as constant source...
Abstract The single event effect caused by space heavy ion radiation is one of the important factors affecting safety and operation spacecraft on orbit. In research evaluation frequency, spatial distribution time characteristics effects, linear energy transfer (LET) spectra play an role. On Beidou navigation M15 M16 satellites, a upset (SEU) LET monitor was developed to obtain upsets memory device which passes through device. Through measurement results from this monitor, correlation between...
Semi-structured orchard environment has the characteristics of high complexity and strong uncertainty, which brings many challenges to localization navigation agricultural automation equipment with limited sensors. This paper introduces a tree trunk system in semi-structured using camera/ultrasonic sensors fusion. In our method, location each trunk, is relative robot, obtained through tracking detection on robot. And direction robot are wheel odometer IMU, respectively, rather than...
To tackle the problem of low utilization resources in space-based resource scheduling system, an adaptive genetic algorithm-based satellite communication strategy is proposed. By analyzing planning model, viewed as a transponder time-frequency allocation problem, and crossover rate variation are adaptively changed to improve optimization performance algorithm. designing simulation scenarios for experiments, improved algorithm, whale gray wolf algorithm traditional used scheduling, results...
Heavy ions of the galactic cosmic radiation dominate risks and biological effects for plants under spaceflight conditions. However, sensitive genes caused by heavy with different linear energy transfer (LET) values have not been thoroughly studied.
The space environment is mutagenic and may induce genomic phenotypic variations. Exploring the changes in transposon activity rice genome under radiation of great significance.
Abstract FengYun‐3E (FY‐3E) was the first operational meteorological satellite in China early morning orbit. The radiation dosimeter, which is part of satellite's Space Environment Monitor (SEM), contains three probes to measure total ionizing dose directions satellite. Improvements dosimeter have been made increase detection sensitivity. RADFET, a sensor, calibrated using 60 Co radionuclide source correlate its threshold voltage shift with dose. improved has sensitivity 0.06 rad (Si) 0.45...
This paper presents a novel real-time gait phase detection method for wearable assist robotics such as lower limb exoskeletons. In order to achieve individualization and user-adaptive assistance, we use an online learning approach incrementally learn update parameters six states Hidden Markov Model. The advantage of this is avoid the manually parameter calibration process. detector in can automatically adapt wearer's changes, rehabilitation To evaluate method, experiments level walking at...