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Absolute differential cross sections for low-energy He+-He collisions via fully quantum dynamics 认领 引用
1
作者 Yu Wan Kun Wang +5 位作者 Yu-Kun Yang Chuan-Liang Li Ling Liu Yong Wu Svetlana A.Yakovleva Andrey K.Belyaev 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第7期216-223,共8页
Angular differential cross sections for elastic scattering and charge transfer in low-energy He+-He collisions underpin diverse plasma applications,yet systematic quantum mechanical data remain scarce.Employing the... Angular differential cross sections for elastic scattering and charge transfer in low-energy He+-He collisions underpin diverse plasma applications,yet systematic quantum mechanical data remain scarce.Employing the fully quantum mechanical molecular-orbital close-coupling method with high-accuracy ab initio potential energy curves,absolute angular differential cross sections are computed over 0.005-1250 eV/u and scattering angles 0.01°-90°.The present results show good agreement with available high-resolution experimental benchmarks in both magnitude and oscillatory structure,with improved consistency over existing semiclassical and single-electron approaches.By decomposing the cross sections into separate symmetric and antisymmetric channel contributions,three classes of oscillatory structures and their energy evolution are identified:regular oscillations from two-channel quantum interference,irregular oscillations from rainbow scattering in the deep attractive well,and fine-scale oscillations from matter-wave diffraction off the repulsive wall.This work provides the first systematic,fully quantum mechanical differential cross-section dataset across the low-energy and full angular range,serving as reliable reference data for plasma modeling and related applications. 展开更多
关键词 elastic scattering charge transfer fully quantum dynamics angular differential cross sections
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Reliability evaluation on partial photoneutron cross sections for 142-146,148,150Nd 认领 引用
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作者 Yu‑Long Shen Zhi‑Cai Li +8 位作者 Ting‑Kai Ma Wen‑Yu Tan Ting Wu Xin‑Xiang Li Ji‑Min Wang Xi Tao Gong‑Tao Fan Rui‑Rui Xu Wen Luo 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第7期152-163,共12页
Systematic disagreements exist mainly in the available partial photoneutron cross sectionsσ(γ,inX)(i=1,2),which were measured using quasimonoenergetic annihilation photons at the Saclay(France)and Livermore(USA)labo... Systematic disagreements exist mainly in the available partial photoneutron cross sectionsσ(γ,inX)(i=1,2),which were measured using quasimonoenergetic annihilation photons at the Saclay(France)and Livermore(USA)laboratories based on neutron multiplicity sorting methods.In this study,the reliability of theσ(γ,inX)for 142-146,148,150Nd isotopes obtained at Saclay was evaluated using an experimental–theoretical method that satisfies the data reliability criteria proposed based on the theoretical model in TALYS.Our evaluations were then compared with the major Evaluated Nuclear Data Libraries,and the differences from the available experimental data were analyzed.It was found that theσ(γ,1nX)data of Saclay were overestimated and theσ(γ,2nX)data were underestimated in the 144-146,148,150Nd cases,which is consistent with the conclusion of Varlamov;on the contrary,theσ(γ,1nX)were underestimated and theσ(γ,2nX)were overestimated in the 142,143Nd cases.Possible reasons for the above inconsistency in the Nd isotopes were further analyzed.Interestingly,subtracting the contribution of isotopic target impurities significantly reduced the discrepancy in the 143Nd case.However,this is no longer applicable to the 142Nd case,and other factors,including the detector efficiency and accidental coincidence events,should be fully considered to resolve such discrepancies. 展开更多
关键词 Partial photoneutron cross sections 142−146,148,150Nd TALYS Experimental–theoretical method Evaluated data
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Research on Key Technologies for Traffic Organization in the Reconstruction and Expansion of Complex Interchanges and Elevated Lifting Sections 认领 引用
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作者 Ruyi Chen 《Journal of World Architecture》 2026年第2期71-78,共8页
Complex interchanges and elevated lifting sections represent critical nodes in the reconstruction and expansion projects of expressways and urban express roads,characterized by the most intricate structures,highest ri... Complex interchanges and elevated lifting sections represent critical nodes in the reconstruction and expansion projects of expressways and urban express roads,characterized by the most intricate structures,highest risks,and greatest traffic disruptions.Under conditions of heavy network traffic,limited construction space,frequent structural transitions,and interweaving multi-directional traffic flows,conventional traffic organization methods struggle to ensure both construction safety and network efficiency.To systematically address core challenges such as traffic dispersion,safety management,construction transitions,and network coordination faced during the reconstruction and expansion of complex interchanges and elevated lifting sections,this paper outlines the engineering characteristics and traffic pain points of these projects.It proposes key technologies for traffic organization in both complex interchange reconstruction and elevated lifting section reconstruction,aiming to provide technical references for similar complex node reconstruction projects.These technologies hold significant engineering value in enhancing traffic safety during construction,reducing congestion risks,and ensuring the smooth operation of the road network. 展开更多
关键词 Complex interchange Elevated lifting section Reconstruction and expansion Traffic organization Traffic transition Safety management Road network coordination
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Deep imaging of LepR+stromal cells in optically cleared murine bone hemisections 认领 引用
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作者 Yuehan Ni Jiamiao Wu +23 位作者 Fengqi Liu Yating Yi Xiangjiao Meng Xiang Gao Luyi Xiao Weiwei Zhou Zexi Chen Peng Chu Dan Xing Ye Yuan Donghui Ding Ge Shen Min Yang Ronjie Wu Ling Wang Luiza Martins Nascentes Melo Sien Lin Xiaoguang Cheng Gang Li Alpaslan Tasdogan Jessalyn M.Ubellacker Hu Zhao Shentong Fang Bo Shen 《Bone Research》 SCIE CAS CSCD 2025年第1期104-120,共17页
Tissue clearing combined with high-resolution confocal imaging is a cutting-edge approach for dissecting the three-dimensional(3D)architecture of tissues and deciphering cellular spatial interactions under physiologic... Tissue clearing combined with high-resolution confocal imaging is a cutting-edge approach for dissecting the three-dimensional(3D)architecture of tissues and deciphering cellular spatial interactions under physiological and pathological conditions.Deciphering the spatial interaction of leptin receptor-expressing(LepR+)stromal cells with other compartments in the bone marrow is crucial for a deeper understanding of the stem cell niche and the skeletal tissue.In this study,we introduce an optimized protocol for the 3D analysis of skeletal tissues,enabling the visualization of hematopoietic and stromal cells,especially LepR+stromal cells,within optically cleared bone hemisections.Our method preserves the 3D tissue architecture and is extendable to other hematopoietic sites such as calvaria and vertebrae.The protocol entails tissue fixation,decalcification,and cryosectioning to reveal the marrow cavity.Completed within approximately 12 days,this process yields highly transparent tissues that maintain genetically encoded or antibody-stained fluorescent signals.The bone hemisections are compatible with diverse antibody labeling strategies.Confocal microscopy of these transparent samples allows for qualitative and quantitative image analysis using Aivia or Bitplane Imaris software,assessing a spectrum of parameters.With proper storage,the fluorescent signal in the stained and cleared bone hemisections remains intact for at least 2–3 months.This protocol is robust,straightforward to implement,and highly reproducible,offering a valuable tool for tissue architecture and cellular interaction studies. 展开更多
关键词 transparent sections straight
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Bifurcation dynamics govern sharp wave ripple generation and rhythmic transitions in hippocampal-cortical memory networks 认领 引用
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作者 Xin Jiang Jialiang Nie +1 位作者 Denggui Fan Lixia Duan 《Chinese Physics B》 SCIE EI CAS CSCD 2025年第12期534-548,共15页
This study investigates the bifurcation dynamics underlying rhythmic transitions in a biophysical hippocampal–cortical neural network model.We specifically focus on the membrane potential dynamics of excitatory neuro... This study investigates the bifurcation dynamics underlying rhythmic transitions in a biophysical hippocampal–cortical neural network model.We specifically focus on the membrane potential dynamics of excitatory neurons in the hippocampal CA3 region and examine how strong coupling parameters modulate memory consolidation processes.Employing bifurcation analysis,we systematically characterize the model's complex dynamical behaviors.Subsequently,a characteristic waveform recognition algorithm enables precise feature extraction and automated detection of hippocampal sharp-wave ripples(SWRs).Our results demonstrate that neuronal rhythms exhibit a propensity for abrupt transitions near bifurcation points,facilitating the emergence of SWRs.Critically,temporal rhythmic analysis reveals that the occurrence of a bifurcation is not always sufficient for SWR formation.By integrating one-parameter bifurcation analysis with extremum analysis,we demonstrate that large-amplitude membrane potential oscillations near bifurcation points are highly conducive to SWR generation.This research elucidates the mechanistic link between changes in neuronal self-connection parameters and the evolution of rhythmic characteristics,providing deeper insights into the role of dynamical behavior in memory consolidation. 展开更多
关键词 hippocampal-cortical memory networks bifurcation analysis rhythmic transitions sharp wave ripples
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Spin-Orbit State-Resolved Differential Cross Sections of S(1D)+HD Reaction 认领 引用
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作者 Yu Li Heilong Wang +3 位作者 Zhirun Jiao Hongtao Zhang Chunlei Xiao Xueming Yang 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2025年第5期582-586,I0147,共5页
Here,we report the spin-orbit state-resolved differential cross sections(DCSs)for the prototype barrierless reaction S(1D)+HD.Both product channels,namely H+SD(2Π3/2,1/2)and D+SH(2Π3/2,1/2),were measu... Here,we report the spin-orbit state-resolved differential cross sections(DCSs)for the prototype barrierless reaction S(1D)+HD.Both product channels,namely H+SD(2Π3/2,1/2)and D+SH(2Π3/2,1/2),were measured by high-resolution crossed molecular beam experiments.The DCSs of the two product channels show an overall forward-backward symmetry,in accordance with statistical model predictions.However,the DCSs for different spin-orbit manifolds show different preferences in forward or backward scattering directions at the same collision energies.This study reveals that,even though the title reaction proceeds via the long-lived complex mechanism,the spin-orbit coupling effects in the product channels play an important role in the reaction process. 展开更多
关键词 Barrierless reaction Spin-orbit effects Crossed molecular beam Differential cross sections
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Investigations of inelastic cross sections of H2O molecule by He2+ and C6+ projectiles with energy range around the Bragg peak 认领 引用
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作者 Guo-Zhuang Li Cheng-Ye Sun +5 位作者 Rui Cheng Yan-Shi Zhang Liang-Wen Chen Sheng Zhang Xin-Xia Li Lei Yang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第2期141-154,共14页
Inelastic collisions are the dominant cause of energy loss in radiotherapy.In the energy range around the Bragg peak,single ionization(SI)and single-electron capture(SC)are the primary inelastic collisions that lead t... Inelastic collisions are the dominant cause of energy loss in radiotherapy.In the energy range around the Bragg peak,single ionization(SI)and single-electron capture(SC)are the primary inelastic collisions that lead to energy loss.This study employs the classical trajectory Monte Carlo method to study the SI and SC processes of H2O molecules using He2+ and C6+ projectiles in the energy range of 10 keV/u to 10 MeV/u.The total cross sections,single differential cross sections,impact parameter dependence of SI and SC,and fragmentation cross sections were investigated.Results illustrate that the cross section for SI is the highest when the projectile energy is close to the Bragg peak energy.When the projectile energy is below the Bragg peak energy,the ionized electrons in the forward direction dominate,and the removal of electrons can be associated with large impact parameters.As the projectile energy increases,the emission angle of the electrons gradually transitions from small angles(60°~120°)to large angles(60°~120°),and the removal of electrons is associated with small impact parameters.The energy distributions of the ionized electron are similar when the projectile energy is equal to,below or above the Bragg peak energy.The fragmentation cross sections after SI and SC in the energy range around the Bragg peak were also estimated. 展开更多
关键词 Classical trajectory Monte Carlo Heavy ion-water molecule collision Inelastic cross sections
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New measurement of 165Ho neutron capture cross sections 认领 引用
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作者 Su-Ya-La-Tu Zhang Yong-Shun Huang +7 位作者 Wei Jiang Jie Ren Rui-Rui Fan De-Xin Wang Chun-Lei Zhang Guo Li Dan-Dan Niu Mei-Rong Huang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2025年第9期1-8,共8页
The neutron capture cross section for165Ho was measured at the backstreaming white neutron beam line(Back-n)of the China Spallation Neutron Source(CSNS)using total energy detection systems,composed of a set of four... The neutron capture cross section for165Ho was measured at the backstreaming white neutron beam line(Back-n)of the China Spallation Neutron Source(CSNS)using total energy detection systems,composed of a set of four C6D6scintillator detectors coupled with pulse height weighting techniques.The resonance parameters were extracted using the multilevel multichannel R-matrix code SAMMY to fit the measured capture yields of the165Ho(n,γ)reaction in the neutron energy range below100 eV.Subsequently,the resonance region’s capture cross sections were reconstructed based on the obtained parameters.Furthermore,the unresolved resonance average cross section of the165Ho(n,γ)reaction was determined relative to that of the standard sample197Au within the neutron energy range of 2 keV to 1 MeV.The experimental data were compared with the recommended nuclear data from the ENDF/B-VIII.0 library,as well as with results of calculations performed using the TALYS-1.9 code.The comparison revealed agreement between the measured165Ho(n,γ)cross sections and these data.The present results are crucial for evaluating the165Ho neutron capture cross section and thus enhance the quality of evaluated nuclear data libraries.They provide valuable guidance for nuclear theoretical models and nuclear astrophysical studies. 展开更多
关键词 Holmium Neutron capture reaction Cross section Total energy detection principle C6D6 scintillator detector China Spallation Neutron Source
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Recent Activity of the Badu-Longwei Segment,Guguan-Xiangong Fault in Southern Liupanshan,Constrained by Rhythmic Sediment Lithology and Geomorphic Characteristics 认领 引用 被引量：2
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作者 SHI Zhigang YUAN Daoyang +2 位作者 HE Wengui LIU Xingwang WANG Jun 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2015年第4期1165-1175,共11页
This study＇s objective was to investigate the Guguan-Xiangong Fault, which lies in the southern Liupanshan area, through satellite image interpretation and field observations. Guguan- Xiangong Fault is divided into f... This study＇s objective was to investigate the Guguan-Xiangong Fault, which lies in the southern Liupanshan area, through satellite image interpretation and field observations. Guguan- Xiangong Fault is divided into five subsegments; among these, the Badu-Longwei segment has been the most recently active. The geomorphic features of the Badu-Longwei segment are clearly displayed, including multiple high fault scarps with fresh bedrock free faces. There is significant evidence for Holocene activity of the three fault sections, located in Renhuashu, Tianjiagou, and Xinjiecun respectively. The three sections feature distinct episodic deposition and fault scratches. Based on 14C- dating and field observations on the three fault sections, two or more paleoearthquakes across the Badu-Longwei fault segment are ascertained, between 5874±116 and 5430±140 a BP, and after 2037±83 a BP respectively. The Badu-Longwei segment of the Guguan-Xiangong Fault is preliminarily extrapolated as the seismogenic structure of the 600 A.D. Qin-Long earthquake. 展开更多
关键词 Guguan-Xiangong Fault Badu-longwei segment dislocated lanform three sections,rhythmic deposition 14C-dating paleoearthquake
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Geometric parameter identification of bridge precast box girder sections based on deep learning and computer vision 认领 引用 被引量：6
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作者 JIA Jingwei NI Youhao +2 位作者 MAO Jianxiao XU Yinfei WANG Hao 《Journal of Southeast University(English Edition)》 EI CAS 2025年第3期278-285,共8页
To overcome the limitations of low efficiency and reliance on manual processes in the measurement of geometric parameters for bridge prefabricated components,a method based on deep learning and computer vision is deve... To overcome the limitations of low efficiency and reliance on manual processes in the measurement of geometric parameters for bridge prefabricated components,a method based on deep learning and computer vision is developed to identify the geometric parameters.The study utilizes a common precast element for highway bridges as the research subject.First,edge feature points of the bridge component section are extracted from images of the precast component cross-sections by combining the Canny operator with mathematical morphology.Subsequently,a deep learning model is developed to identify the geometric parameters of the precast components using the extracted edge coordinates from the images as input and the predefined control parameters of the bridge section as output.A dataset is generated by varying the control parameters and noise levels for model training.Finally,field measurements are conducted to validate the accuracy of the developed method.The results indicate that the developed method effectively identifies the geometric parameters of bridge precast components,with an error rate maintained within 5%. 展开更多
关键词 bridge precast components section geometry parameters size identification computer vision deep learning
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Measurement of Br(n,γ)cross sections up to stellar s-process temperatures at the CSNS Back‑n 认领 引用 被引量：3
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作者 Gao‑Le Yang Zhen‑Dong An +43 位作者 Wei Jiang Xian‑Kai Li Wei‑Wei Qiu Zheng‑Fa Liao Zi‑Yue Zhuang Xiao‑Ping Zhang Sheng‑Li Chen Chen‑Chen Guo Er‑Xi Xiao Xiao Fang Xin‑Xiang Li Xin‑Rong Hu Bing Jiang Jin‑Cheng Wang Jie Ren Wen Luo Zhi‑Chao Zhu Hao‑Yang Lan Zong‑Wei Cao Xu Ma Ying‑Du Liu Pu‑Sen Wang Yi Yang Ping Su Xian‑Gai Deng Wan‑Bing He Chun‑Wang Ma Yu‑Ting Wang Zhi‑Tao Dai Peng‑Qin He Ren‑Guang Tang Tao Zhou Jing Wang Han Yi Yue Zhang Yong‑Hao Chen Rui‑Rui Fan Ke‑Qing Gao Qiang Li Kang Sun Zhi‑Xin Tan Min‑Hao Gu Han‑Tao Jing Jing‑Yu Tang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第11期226-241,共16页
The neutron capture cross sections(n,γ)of bromine were obtained using the time-of-flight technique at the Back-n facility of the China Spallation Neutron Source.Promptγ-rays originating from neutron-induced capture ... The neutron capture cross sections(n,γ)of bromine were obtained using the time-of-flight technique at the Back-n facility of the China Spallation Neutron Source.Promptγ-rays originating from neutron-induced capture events were detected using four C6D6 detectors.The pulse-height weighting technique and double-bunch unfolding method based on Bayesian theory were used in the data analysis.Background deductions,normalization,and corrections were carefully considered to obtain reliable measurement results.The multilevel R-matrix Bayesian code SAMMY was used to extract the resonance parameters in the resolved resonance region(RRR).The average cross sections in the unresolved resonance region(URR)were obtained from 10 to 400 keV.The experimental results were compared with data from several evaluated libraries and previous experi-ments in the RRR and URR.The TALYS code was used to describe the average cross sections in the URR.The astrophysical Maxwell average cross sections(MACSs)of 79,81Br from kT=5 to 100 keV were calculated over a sufficiently wide range of neutron energies.At a thermal energy of kT=30 keV,the MACS value for 79Br 682±68 mb was in good agreement with the KADoNiS v1.0 recommended value.By contrast,the value of 293±29 mb for 81Br was substantially higher than that of the evaluated database and the KADoNiS v1.0 recommended value. 展开更多
关键词 Time-of-flight technique Neutron capture cross sections Maxwell average cross sections
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Absolute Cross Sections for Direct and Dissociative Ionizations of Oxygen Molecule Measured by 350-8000 eV Electron Impact 认领 引用
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作者 Weizhe Huang Taj Wali Khan +3 位作者 Yuting Zhang Enliang Wang Xu Shan Xiangjun Chen 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2025年第2期164-171,I0039,共8页
The direct and dissociative ionizations of oxygen molecule are investigated experimen-tally by electron collision with energies from 350 eV to 8000 eV.The absolute ionization cross sections for the product ions(O2^... The direct and dissociative ionizations of oxygen molecule are investigated experimen-tally by electron collision with energies from 350 eV to 8000 eV.The absolute ionization cross sections for the product ions(O22+,O22+O+,O2+,and their total)and two Coulomb explosion channels(O++O+and O2++O+)are obtained by putting the data of O2+on the scale of Ar+from O2and Ar gases mixed with a fixed relative flow ratio of 1:1.The experimental errors are assessed by taking uncertainties of various factors into account.The present absolute cross sections are well consistent with the previous data in the overlapped energy range below 1000 eV. 展开更多
关键词 Electron collision Absolute ionization cross section Oxygen molecule
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Partial wave scattering cross sections for He-HBr collision 认领 引用 被引量：7
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作者 余春日 凤尔银 +1 位作者 汪荣凯 杨向东 《Chinese Physics B》 CAS 2006年第11期2571-2577,共7页
A new anisotropic potential is fitted to ab initio data. The close-coupling approach is utilized to calculate state-tostate rotational excitation partial wave cross sections for elastic and inelastic collisions of He ... A new anisotropic potential is fitted to ab initio data. The close-coupling approach is utilized to calculate state-tostate rotational excitation partial wave cross sections for elastic and inelastic collisions of He atom with HBr molecule based on the fitted potential. The calculation is performed separately at the incident energies： 75, 100 and 200 meV.The tendency of the elastic and inelastic rotational excitation partial wave cross sections varying with total angular quantum number J is obtained. 展开更多
关键词 close-coupling approach partial wave cross sections He-BrH complex
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Three-dimensional reconstruction of human spinal cord based on histological serial sections 认领 引用 被引量：1
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作者 Guangming Lü Huiqun Wu +3 位作者 Lemin Tang Xiao Han Dafeng Ji Xiaosong Gu 《Neural Regeneration Research》 SCIE CAS 2008年第7期697-700,共4页
BACKGROUND： It is not possible to reconstruct the inner structure of the spinal cord, such as gray matter and spinal tracts, from the Visual Human Project database or CT and MRI databases, due to low image resolution... BACKGROUND： It is not possible to reconstruct the inner structure of the spinal cord, such as gray matter and spinal tracts, from the Visual Human Project database or CT and MRI databases, due to low image resolution and contrast in macrosection images. OBJECTIVE： To explore a semi-automatic computerized three-dimensional （3D） reconstruction of human spinal cord based on histological serial sections, in order to solve issues such as low contrast. DESIGN, TIME AND SETTING： An experimental study combining serial section techniques and 3D reconstruction, performed in the laboratory of Human Anatomy and Histoembryology at the Medical School of Nantong University during January to April 2008. SETTING： Department of Anatomy, Institute of Neurobiology, Jiangsu Province Key Laboratory of Neural Regeneration, Laboratory of Image Engineering. MATERIALS： A human lumbar spinal cord segment from fresh autopsy material of an adult male. METHODS： After 4% paraformaldehyde fixation for three days, serial sections of the lumbar spinal cord were cut on a Leica cryostat and mounted on slides in sequence, with eight sections aligned separately on each slide. All sections were stained with Luxol Fast Blue to reveal myelin sheaths. After gradient dehydration and clearing, the stained slides were coverslipped. Sections were observed and images recorded under a light microscope using a digital camera. Six images were acquired at x25 magnification and automatically stitched into a complete section image. After all serial images were obtained, 96 complete serial images of the human lumbar cord segment were automatically processed with ＂Curves＂, ＂Autocontrast＂, ＂Gray scale 8 bit＂, ＂Invert＂, ＂Image resize to 50%＂ steps using Photoshop 7.0 software. All images were added in order into 3D-DOCTOR 4.0 software as a stack, where serial images were automatically realigned with neighboring images and semi-automatically segmented for white matter and gray matter. Finally, simple surface and volume reconstruction were completed on a personal computer. The reconstructed human lumbar spinal cord segment was interactively observed, cut, and measured. MAIN OUTCOME MEASURES： The reconstructed human lumbar spinal cord segment. RESULTS： Compared with serial images obtained from other image modalities, such as CT, MRI, and macrosections from The Visual Human Project database, the Luxol Fast Blue stained histological serial section images exhibited higher resolution and contrast between gray and white matter. Image processing and 3D reconstruction steps were semi-automatically performed with related software. The 3D reconstructed human lumbar cord segment were observed, cut, and measured on a PC. CONCLUSION： A semi-automatically computerized method, based on histological serial sections, is an effective way to 3D-reconstruct the human spinal cord. 展开更多
关键词 Luxol Fast Blue reconstruction serial sections surface three-dimensional visible human project volume
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Improvement of the Bayesian neural network to study the photoneutron yield cross sections 认领 引用 被引量：10
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作者 Yong-Yi Li Fan Zhang Jun Su 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2022年第11期1-9,共9页
This work is an attempt to improve the Bayesian neural network (BNN) for studying photoneutron yield cross sections as a function of the charge number Z, mass number A, and incident energy ε. The BNN was improved in ... This work is an attempt to improve the Bayesian neural network (BNN) for studying photoneutron yield cross sections as a function of the charge number Z, mass number A, and incident energy ε. The BNN was improved in terms of three aspects:numerical parameters, input layer, and network structure. First, by minimizing the deviations between the predictions and data, the numerical parameters, including the hidden layer number, hidden node number, and activation function, were selected. It was found that the BNN with three hidden layers, 10 hidden nodes, and sigmoid activation function provided the smallest deviations. Second, based on known knowledge,such as the isospin dependence and shape effect, the optimal ground-state properties were selected as input neurons. Third, the Lorentzian function was applied to map the hidden nodes to the output cross sections, and the empirical formula of the Lorentzian parameters was applied to link some of the input nodes to the output cross sections. It was found that the last two aspects improved the predictions and avoided overfitting, especially for the axially deformed nucleus. 展开更多
关键词 Bayesian neural network Photoneutron cross sections Giant dipole resonance
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Psychophysiological effects of rhythmic music combined with aerobic exercise in college students with minimal depressive symptoms 认领 引用 被引量：1
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作者 Ping Yang Hui Yang +2 位作者 Yang Cao Xin Yang Benxiang He 《Sports Medicine and Health Science》 2022年第4期267-274,共8页
Mental health problems are common during the transition from adolescence to young adulthood.Previous studies reported that rhythmic music plus aerobic exercise can have a beneficial effect on emotional state.We examin... Mental health problems are common during the transition from adolescence to young adulthood.Previous studies reported that rhythmic music plus aerobic exercise can have a beneficial effect on emotional state.We examined whether the beneficial effect differed between aerobic exercise interventions with or without rhythmic music.A sample of 94 college students who either had no depressive symptoms(n=47)or minimal depressive symptoms(n=47)underwent 30-min interventions in a randomized and counterbalanced order:rest,rhythmic music,aerobic exercise and aerobic exercise plus rhythmic music.Response time and accuracy of selective attention to positive and negative images were recorded using the spatial cueing paradigm.Participants’heart rate during all conditions and perceived exertion after each condition were measured to clarify physiological and perceptual responses,respectively.The results revealed that a multimodal intervention combining aerobic exercise and rhythmic music had a significant facilitatory effect on attentional bias to positive emotional cues in minimal depressive participants(t=-2.336,p=0.024),including less perceived exertion and higher heart rate after/during the intervention process.The single-modality intervention of aerobic exercise had significant positive effects for individuals with no depressive symptoms(t=2.510,p=0.016).The multimodal intervention was more effective than the single-modality intervention for individuals with minimal depressive symptoms,but the single-modality aerobic exercise intervention was more effective for individuals with no depressive symptoms,providing new evidence for the specificity of the intervention effect for people with different degrees of depressive symptoms. 展开更多
关键词 Multimodal intervention Depression Aerobic exercise Rhythmic music Attentional bias
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Training session intensity affects plasma redox status in amateur rhythmic gymnasts 认领 引用 被引量：1
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作者 Marianna Bellafiore Antonino Bianco +6 位作者 Giuseppe Battaglia Maria Silvia Naccari Giovanni Caramazza Johnny Padulo Karim Chamari Antonio Paoli Antonio Palma 《Journal of Sport and Health Science》 SCIE CAS 2019年第6期561-566,共6页
Purpose:The aim of this study was to examine systemic responses of oxidant/antioxidant status following 2 training sessions of different intensity in amateur rhythmic gymnasts.Methods:Before the experimental training,... Purpose:The aim of this study was to examine systemic responses of oxidant/antioxidant status following 2 training sessions of different intensity in amateur rhythmic gymnasts.Methods:Before the experimental training,10 female gymnasts performed a gradually increased exercise test to assess maximal heart rate,maximal oxygen consumption,and anaerobic threshold.They executed 2 intermittent training sessions separated by 48 h of recovery(48 h-post R):the first was performed at low-moderate intensity(LMI)and the second at high intensity(HI).Blood samples were collected immediately preand post-training and 48 h-post R.Hydroperoxide level(OxL)and total antioxidant capacity(TAC)were photometrically measured.Results:OxL was significantly higher in post-training and 48 h-post R following HI than the same conditions after an LMI session(HI vs.LMI post-training:381.10±46.17(mean±SD)vs.344.18±27.94 Units Carratelli(U.CARR);48 h-post R:412.21±26.61 vs.373.80±36.08 U.CARR).There was no change in TAC between the 2 training sessions investigated.In LMI training,OxL significantly decreased in post-training and increased to reach the baseline at 48 h-post R,whereas TAC increased only at 48 h-post R.In HI training,OxL significantly increased to reach a high oxidative stress 48 h-post R,whereas TAC was lower in post-training than pre-training.Conclusion:The pattern of OxL and TAC levels implies different regulation mechanisms by HI and LMI training sessions.High oxidative stress induced by an HI protocol might be associated with both insufficient TAC and recovery time at 48 h necessary to restore redox balance. 展开更多
关键词 Antioxidant capacity Exercise physiology Free radicals Oxidative stress Reactive oxygen species Rhythmic gymnastics Training intensity
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The (e,2e) triple differential cross sections of Cu^+ (3p) in coplanar asymmetric geometry 认领 引用 被引量：4
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作者 周丽霞 燕友果 门福殿 《Chinese Physics B》 SCIE EI CAS 2010年第7期204-209,共6页
The three-body distorted=wave Born approximation has been used to calculate the （e, 2e） triple differential cross sections （TDCSs） of Cu＋ （3p） in different kinematical variables in coplanar asymmetric geometry.... The three-body distorted=wave Born approximation has been used to calculate the （e, 2e） triple differential cross sections （TDCSs） of Cu＋ （3p） in different kinematical variables in coplanar asymmetric geometry. The angles 4°, 10° and 20° were selected as the scattering electron angles. Under high incident energy （≥500 eV） and high asymmetric detection energy, the binary peaks showed abnormal splits. Such abnormal splits have not been observed in atomic target and outer valence orbitals of ionic target, which indicates that an （e, 2e） process for inner valence orbitals of ionic target would be more complicated than outer valence orbitals. Furthermore, some pronounced peaks appeared at certain ejected angles. We considered that these pronounced peaks are probably related to one kind of double-binary collision. 展开更多
关键词 （e 2e） distorted-wave Born approximation triple differential cross sections double-binary collision
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Preliminary Measurement of the K-Shell Ionization Cross Sections of Ti by Positron Impact in the Low Energy Region 认领 引用 被引量：1
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作者 田丽霞 刘慢天 +3 位作者 朱敬军 安竹 王宝义 秦秀波 《Plasma Science and Technology》 SCIE EI CAS CSCD 2012年第5期434-437,共4页
Measurements were performed of K-shell ionization cross sections of Ti element by 10～30 keV positron impact using the thick-target method. The effects of multiple scattering of incident positron and from bremsstrahlu... Measurements were performed of K-shell ionization cross sections of Ti element by 10～30 keV positron impact using the thick-target method. The effects of multiple scattering of incident positron and from bremsstrahlung photons and annihilation photons with the thick-target method are discussed with the Monte Carlo code PENELOPE. Meanwhile, the Monte Carlo method is also applied to determine the detection efficiencies of X- and γ-ray detectors. Our experimental K-shell ionization cross sections for Ti element are compared with the distorted-wave Born approximation （DWBA） theoretical predictions, and it is found that the agreement of the experimental data and theoretical values is good and this indicates that the experimental method adopted in this study is applicable. 展开更多
关键词 positron impact ionization cross sections thick-target method Monte Carlosimulation
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Charge-Changing Cross Sections of 736 A MeV 28Si on Carbon Targets 认领 引用 被引量：1
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作者 李俊生 党英华 +3 位作者 张东海 程锦霞 S.Kodaira N.Yasuda 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第10期23-26,共4页
The total and partial charge-changing cross sections of 28 Si on carbon targets at 736 and 723 A Me V are studied by CR-39 plastic nuclear track detectors using the HSP-1000 microscope system and the PitFit track meas... The total and partial charge-changing cross sections of 28 Si on carbon targets at 736 and 723 A Me V are studied by CR-39 plastic nuclear track detectors using the HSP-1000 microscope system and the PitFit track measurement software. The values of the total charge-changing cross section are σtot=（11794-50） mb and σtot=（11864-42） mb at 736 and 723A MeV, respectively. The result is compared with the ones obtained by other experimental and theoretical results. The odd-even effect of the partial charge-changing cross section is observed. 展开更多
关键词 CR Si on Carbon Targets Charge-Changing Cross Sections of 736 A MeV
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