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The current and future potential geographic range of West Indian fruit fly, Anastrepha obliqua （Diptera： Tephritidae）

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Insect Science 2014年第2期21卷 234-244页

作者： Liao Fu Zhi-Hong Li Guan-Sheng Huang Xing-Xia WU Wen-Long Ni wei-wei qu College of Agriculture and Biotechnology China Agricultural University General Administration of quality Supervision Inspection and Quarantine of People's Republic of China Beijing China

The West Indian fruit fly, Anastrepha obliqua （Macquart）, is one of the most important pests throughout the Americas. CLIMEX 3.0 and ArcGIS 9.3 were used to model the current and future potential geographical distribution of this pest. Under current climatic conditions, A. obliqua is predicted to be able to establish throughout much of the tropics and subtropics, including not only North and South America, where it has been reported, but also southern Asia, northeastern Australia and Sub-Saharan Africa. The main factors limiting the pest＇s range expansion may be cold stress. Climate change expands the potential distribution of A. obliqua poleward as cold stress boundaries recede, but the predicted distribution in northwestern Australia and northern parts of Sub-Saharan Africa will decrease because of heat stress. Considering the widely suitable range for A. obliqua globally and in China, enhanced quarantine and monitoring measures should be implemented in areas that are projected to be suitable for the establishment of the pest under current and future climatic conditions.

关键词： Anastrepha obliqua ArcGIS climatic change CLIMEX potentialgeographic distribution

Performance of a plastic scintillation fiber dosimeter based on different photoelectric devices

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维普期刊数据库

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Nuclear Science and Techniques 2021年第11期32卷 25-31页

作者： Yue Yang Cui-Ping Yang Jie Xin Hai-Feng Chen Zhong-Xu Xing wei-wei qu Liang Hu Xin-Jian Chen Ren-Sheng Wang State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China Renji Hospital Affiliated with the Shanghai Jiao Tong University School of MedicineShanghai 200127China Shanghai Ninth People’s Hospital Affiliated with the Shanghai Jiao Tong University School of MedicineShanghai 200127China Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Suzhou 215123China

The photoelectric device of a scintillation dosimeter converts photons produced by radiation into an electrical *** features directly determine the overall performance of the *** a plastic scintillation fiber dosimeter(PSFD)with a current readout mode,systematic studies of the stability and light-dose response were performed for the photomultiplier tube(PMT),silicon photomultiplier(SiPM),avalanche photodiode(APD),and photodiode(PD).The temperature stability,long-term stability,repeatability,signal-to-noise ratio(SNR),and current dose response of the PSFD with the abovementioned photoelectric devices were studied using a pulsed LED light source and the Small Animal Radiation Therapy *** exponential relationship between the dark/ne current and temperature was obtained for all the devices.I is shown that the APD is the most sensitive device to temperature,with a current dependence on temperature reaching 6.5%C^(-1)at room temperature,whereas for the other devices this dependence is always<0:6%C^(-1).In terms of long-term stability,the net current of PD can change by up to 4%when working continuously for 8 h and 2%when working intermittently for 32 h,whereas for the other devices,the changes are all<1%.For the dose response,the PMT and SiPM exhibit excellent linear responses and SNRs within the range of 0.1-60 Gy/min For the PSFD with a current readout mode,the performance of the PMT and SiPM is concluded to be better than that of the other devices in the *** particular,the SiPM,which has a compact size,low bias voltage,and antimagnetic interference,has great advantages for further applications.

关键词： Photoelectric device Plastic scintillation fiber dosimeter(PSFD) Current readout Dose response

Angular distribution measurement for ^12C fragmentation via ^12C ＋ ^12C scattering at 100 MeV/u

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Chinese Physics C 2018年第7期42卷 30-36页

作者： wei-wei qu Gao-Long Zhang Guo-Yu Tian Zhi-Qiang Chen Shou-Ping Xu Royichi Wada State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Suzhou 215123China School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Big Data-based Precision Medicine Beihang UniversityBeijing100083China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Department of Radiation Oncology PLA General HospitalBeijing 100853China Cyclotron Institute Texas A&M UniversityCollege StationTexas 77843USA

The angular distributions and energy spectra of 11B, 10B, and 9Be fragments of 12C in the angular range from 1.0° to 7.5° at 100 MeV/u were obtained via 12C ＋ 12C scattering. Detailed comparisons are presented between the experimental data and the modified antisymmetrized molecular dynamics （AMD-FM）, binary intranuclear cascade model （BIC） and Liège intranuclear cascade model （INCL＋＋）. The experimental angular distributions and energy spectra are well reproduced by the AMD-FM calculations but fail to be reproduced by the physical models installed in the Geant4 program, including the BIC and INCL＋＋ models.

关键词： breakup angular distribution AMD Geant4 simulation

Evaluation of CdZnTe spectrometer performance in measuring energy spectra during interventional radiology procedure

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Nuclear Science and Techniques 2019年第9期30卷 55-60页

作者： Lin Chai Lian Chen Cui-Ping Yang Dong-Dong Zhou Meng-Meng Yang wei-wei qu Gao-Long Zhang Da-Qian Hei Shou-Ping Xu Xin-Jian Chen State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection Soochow University Suzhou 215123 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Suzhou 215123 China School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang University Beijing 100083 China College of Materials Science and Engineering Nanjing University of Aeronautics and Astronautics Nanjing 211106 China Department of Radiation Oncology PLA General Hospital Beijing 100853 China

Interventional radiology has been beneficial for patients for over 30 years of age with the combination of diagnostic and therapeutic methods. The radiation affecting occupationally exposed workers should be evaluated by means of the energy spectra and flux of X-rays in the treatment room. The present study aims to obtain the energy spectra of interventional procedures and study the capability of some detectors to evaluate the dose in interventional procedures. These measurements were taken by silicon-drift, CdTe, and CdZnTe detectors. The energy spectra were corrected by the energy-response curve of each detector. The energy-response curves of silicon-drift and CdTe detectors provided by the manufacturers specification were used. The energy response of the CdZnTe detector was measured by 133Ba and 152Eu γ sources. The experimental data were compared with the simulation results, and their perfect agreement provides a way to correct the energy or dose response, which can be used for the personal dosimeter developed by our group. Moreover, the measured energy spectra can be used in individual radiation protection. The present study shows that the CdZnTe detector is a good candidate detector in interventional procedures.

关键词： Interventional radiology procedures Energyresponse curve Energy spectrum Radiation protection

Attenuation coefficients of gamma and X-rays passing through six materials

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Nuclear Science and Techniques 2020年第1期31卷 26-31页

作者： Xue-Dou Su Gao-Long Zhang Shou-Ping Xu wei-wei qu Lin Song Yu-Hua Huang Ben Wang Yi-Feng Wang Ze-Tao Zhang Wu-Fu Xu Ming-Li Wang School of Physics and Nuclear Energy Engineering Beihang UniversityBeijing 100191China Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang UniversityBeijing 100083China Department of Radiation Oncology PLA General HospitalBeijing 100853China State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China

The aim of this study was to determine the attenuation of gamma and X-rays with different energies caused by passage through different *** this end,different materials with a range of atomic numbers were chosen to measure gamma and X-ray attenuation coefficients and to explore the mechanisms of interaction of gamma and X-rays with matter of various *** is shown that the attenuation coefficients first decrease and then increase with increase in the radiation(photon)*** attenuation of gamma and X-rays passing through materials with high atomic number is greater than that in materials with low atomic *** attenuation minimum is related to the atomic number of the irradiated *** larger the atomic number is,the lower the energy corresponding to attenuation minimum *** and Compton effects are the main processes when gamma rays pass through individual materials with high and low atomic numbers,***,for radiotherapy and radiation protection,different methods should be considered and selected for the use of gamma and X-rays of different energies for use in different materials.

关键词： Attenuation coefficient Interaction mechanisms Gamma rays High-energy X-rays Therapy and protection

Influence of cutting off position of plasma filament formed by two-color femtosecond laser on terahertz generation

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Chinese Physics B 2018年第5期27卷 194-197页

作者： Zhan-Qiang Xue Li-Ping Shang Hu Deng Qian-Cheng Zhang quan-Cheng Liu wei-wei qu Zhan-Feng Li Shun-Li Wang College of Information Engineer Southwest University of Science and TechnologyMianyang 621010China Robot Technology Used for Special Environment Key Laboratory of Sichuan Province Mianyang 621010China College of Manufacturing Science and Engineering Southwest University of Science and TechnologyMianyang 621010China

Femtosecond laser filamentation is a method of generating terahertz,which has wide application in terahertz subwavelength resolution *** this paper,the plasma filament formed by femtosecond laser focusing was terminated with an alumina ceramics at different positions and the influence of the cutting off position of the plasma filament on the terahertz wave was *** results showed that the terahertz amplitude increases as the position approaches the end of the filament *** stability of amplitude and peak frequency of the terahertz generated by the filament formed by two-color femtosecond laser via a lens with a longer focal length is lower than that through a lens with a shorter focal length,especially the terahertz amplitude at the end of the *** study will be helpful for future researchers in the field of THz sub-wavelength imaging utilizing femtosecond laser filament.

关键词： terahertz laser filament

A detector setup for the measurement of angular distribution of heavy-ion elastic scattering with low energy on RIBLL

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Nuclear Science and Techniques 2017年第7期28卷 85-89页

作者： Gao-Long Zhang Yong-Jin Yao Guang-Xin Zhang Zhen-wei Jiao Cheng-Jian Lin Ya-Zhou Niu wei-wei qu Lei Yang Nan-Rou Ma Lei Zheng Hui-Ming Jia Li-Jie Sun Xing-Xing Liu Xiao-Tong Chu Jie-Cheng Yang Jian-Song Wang Shi-wei Xu Peng Ma Jun-Bing Ma Shi-Lun Jin Zhen Bai Mei-Rong Huang Hong-Liang Zang Biao Yang Yang Liu School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China China Institute of Atomic Energy Beijing 102413 China School of Radiation Medicine and Protection Medical College of Soochow University Soochow 215123 China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 China School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China

A detector setup for the measurement of angular distribution of heavy-ion elastic scattering at energies around Coulomb barrier on the radioactive ion beam line in Lanzhou at the heavy-ion research facility in Lanzhou is *** beam profile and the scattering angles on the target are deduced by two parallel plate avalanche counters,and four sets of detector telescopes(including doublesided silicon strip detectors) are placed systematically with the beam line,incorporating with Monte Carlo *** data of ^(16)O on ^(89)Y target were analyzed to compare with the simulation *** is found that the simulated distribution is agreeable with the experimental *** assuming the pure Rutherford scattering at small scattering angles,the angular distribution of elastic scattering of^(16)O+^(89)Y at low energies can be reasonably *** indicates that this set of detector setup can be used for the measurement of angular distributions of heavy-ion elastic scattering at energies around Coulomb barrier.

关键词：兰州放射性束流线重离子研究装置探测器望远镜角分布测量弹性散射低能量设置平行板雪崩计数器

Defects‑Rich Heterostructures Trigger Strong Polarization Coupling in Sulfides/Carbon Composites with Robust Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 528-547页

作者： Jiaolong Liu Siyu Zhang Dan qu Xuejiao Zhou Moxuan Yin Chenxuan Wang Xuelin Zhang Sichen Li Peijun Zhang Yuqi Zhou Kai Tao Mengyang Li Bing wei Hongjing Wu Mengyang Li Bing wei Hongjing Wu School of Physics Xidian UniversityXi’an 710071People’s Republic of China School of Advanced Materials and Nanotechnology State Key Discipline Laboratory of Wide Band Gap Semiconductor TechnologyXidian UniversityXi’an 710071People’s Republic of China School of Microelectronics Xidian UniversityXi’an 710071People’s Republic of China School of Telecommunication Engineering Xidian UniversityXi’an 710071People’s Republic of China MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China The Ministry of Education Key Laboratory of Micro and Nano Systems forAerospace School of Mechanical EngineeringNorthwestern PolytechnicalUniversityXi’an 710072People’s Republic of China

Defects-rich heterointerfaces integrated with adjustable crystalline phases and atom vacancies,as well as veiled dielectric-responsive character,are instrumental in electromagnetic *** methods,however,constrain their delicate ***,an innovative alternative is proposed:carrageenan-assistant cations-regulated(CACR)strategy,which induces a series of sulfides nanoparticles rooted in situ on the surface of carbon *** unique configuration originates from strategic vacancy formation energy of sulfides and strong sulfides-carbon support interaction,benefiting the delicate construction of defects-rich heterostructures in M_(x)S_(y)/carbon composites(M-CAs).Impressively,these generated sulfur vacancies are firstly found to strengthen electron accumulation/consumption ability at heterointerfaces and,simultaneously,induct local asymmetry of electronic structure to evoke large dipole moment,ultimately leading to polarization coupling,i.e.,defect-type interfacial ***“Janus effect”(Janus effect means versatility,as in the Greek two-headed Janus)of interfacial sulfur vacancies is intuitively confirmed by both theoretical and experimental investigations for the first ***,the sulfur vacancies-rich heterostructured Co/Ni-CAs displays broad absorption bandwidth of 6.76 GHz at only 1.8 mm,compared to sulfur vacancies-free CAs without any dielectric *** defects-rich heterostructures,this one-pot CACR strategy may steer the design and development of advanced nanomaterials,boosting functionality across diverse application domains beyond electromagnetic response.

关键词： Defects-rich heterointerfaces Sulfides Polarization coupling Electromagnetic wave absorption

GAS2-Calpain axis modulates the growth of leukemic cells

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GAS2-Calpain axis modulates the growth of leukemic cells