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Study on Excitation Function and Isospin Dependencies of Total Reaction Cross Section via the Boltzmann-Uehling-Uhlenbeck Model

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Chinese Physics Letters 2000年第8期17卷 565-567页

作者： CAI Xiang-Zhou SHEN Wen-Qing FENG Jun FANG De-Qing MA Yu-Gang su qian-min ZHANG Hu-Yong HU Peng-Yun Shanghai Institute of Nuclear Research Chinese Academy of SciencesShanghai 201800 CCAST(WorId Laboratory) P.O.Box 8730Beijing 100080

The excitation function and isospin dependencies ofσR have been investigated by using the Boltzmann-Uehling-Uhlenbeck(BUU)model with a square-type density *** the width parameter of the square distribution is obtained by fittingσR at relativistic energies,the BUU-model can reproduce the experimental data at intermediate energies better than Glauber *** systematical underestimation ofσR at intermediate energy by Glauber model was removed out now by BUU calculation *** is also found thatσR is sensitive to nuclear equation of state andσin-NN *** difference factor d defined in text is sensitive to the nuclear structure such as neutron halo and neutron skin,etc.

关键词： BUU removed excitation

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论我国健康扶贫的关键问题与体系构建

中国卫生政策研究 2017年第6期10卷 60-63页

作者：方鹏骞苏敏华中科技大学同济医学院医药卫生管理学院湖北武汉430030

健康扶贫是精准扶贫的重要内容,是实现健康中国战略的关键环节。目前我国贫困人口的健康问题日益突出,健康状况低下又加剧了贫困的发生,因病致贫、因病返贫现象严重。各类医疗保险保障水平依然较低、医疗救助制度尚不完善、县域内医疗... 详细信息

健康扶贫是精准扶贫的重要内容,是实现健康中国战略的关键环节。目前我国贫困人口的健康问题日益突出,健康状况低下又加剧了贫困的发生,因病致贫、因病返贫现象严重。各类医疗保险保障水平依然较低、医疗救助制度尚不完善、县域内医疗机构服务能力较低、县域外转诊率高、贫困地区公共卫生问题较为突出。我国健康扶贫体系的构建,要坚持政府主导、多部门协同的多元健康扶贫主体,加强贫困地区医疗卫生与公共卫生体系建设,建立多路径健康保障体系。

关键词：贫困健康扶贫健康保障体系构建

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-min Qin Zhongliang Li Wen‑Xia su Jia‑min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

Synergistically enhanced ORR and HER performance on Co-N-C coupled in-situ generated PtCo intermetallic

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Journal of Energy Chemistry 2025年第1期100卷 721-729页

作者： Guanyu Luo min Song Lulu An Xiao Huang qian Zhang Chenhao Zhang Tao Shen Shuang Wang Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage (Huazhong University of Science and Technology) ministry of Education School of Chemistry and Chemical Engineering Huazhong University of Science and Technology

Integrating multi-scale sites in a composite catalyst is vital to realize efficient ***,a synergistic composite catalyst consisting of Co atomic sites and in-situ generated PtCo intermetallic compounds （IMCs）(o-PtCo@CoNC) is proposed through Co pre-anchoring and subsequent impregnation-reduction *** loading of Co atoms provides a chance for in-situ generating PtCo ordered intermetallic *** remaining Co single atoms and PtCo IMCs construct synergistic electrocatalytic *** from the ordered structure,synergistic effect of Pt Co IMCs and Co single atoms,o-PtCo@CoNC exhibits excellent electrocatalytic performance for oxygen reduction reaction （ORR） and hydrogen evolution reaction （HER） with mass activity of 1.21 A mgPt-1（at 0.9 V） and5.70 A mgPt-1（at an overpotential of 100 mV）,***,o-PtCo@CoNC delivers negligible loss of half-wave potential and overpotential during long-term stability test in acid solutions,with 13 mV decay after 50,000 potential cycles for ORR and a 2.7 mV decay after 20,000 potential cycles for *** integration strategy of single-atomic sites coupled IMCs paves the way for enhancing the activity and durability of Pt-based electrocatalysts.

关键词： Synergistic effect Intermetallics Single atomic sites Oxygen reduction reaction Hydrogen evolution reaction

孕激素对子宫内膜癌细胞系survivin表达的影响

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基础医学与临床 2009年第8期29卷 855-858页

作者：钱素敏王惠兰沧州市中心医院妇科河北沧州061000 河北医科大学第二医院妇科河北石家庄050000

目的观察孕酮(P)对人子宫内膜癌内膜高分化腺癌细胞株Ishikawa细胞内survivin蛋白表达的影响,探讨孕激素治疗子宫内膜腺癌的机制。方法体外培养人子宫内膜高分化腺癌细胞株Ishikawa细胞,MTT法观察细胞的增殖;流式细胞仪(FCM)检测细胞周... 详细信息

目的观察孕酮(P)对人子宫内膜癌内膜高分化腺癌细胞株Ishikawa细胞内survivin蛋白表达的影响,探讨孕激素治疗子宫内膜腺癌的机制。方法体外培养人子宫内膜高分化腺癌细胞株Ishikawa细胞,MTT法观察细胞的增殖;流式细胞仪(FCM)检测细胞周期和细胞凋亡率;链霉素抗生物素蛋白-过氧化物酶连接(SP)法测定Ishika-wa细胞survivin蛋白的表达。结果P呈剂量依赖性抑制Ishikawa细胞增殖(Psurvivin在Ishikawa细胞中有强表达,P处理24h后,明显下调survivin的表达(Psurvivin的表达可能是调节细胞凋亡的机制之一。

关键词：子宫内膜肿瘤孕酮增殖凋亡

Small extracellular vesicles derived from human induced pluripotent stem cell-differentiated neural progenitor cells mitigate retinal ganglion cell degeneration in a mouse model of optic nerve injury

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Neural Regeneration Research 2025年第2期20卷 587-597页

作者： Tong Li Hui-min Xing Hai-Dong qian Qiao Gao Sheng-Lan Xu Hua Ma Zai-Long Chi State Key Laboratory of Ophthalmology Optometry and Visual ScienceEye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina National Clinical Research Center for Ocular Diseases Eye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina

Several studies have found that transplantation of neural progenitor cells(NPCs)promotes the survival of injured ***,a poor integration rate and high risk of tumorigenicity after cell transplantation limits their clinical *** extracellular vesicles(sEVs)contain bioactive molecules for neuronal protection and *** studies have shown that stem/progenitor cell-derived sEVs can promote neuronal survival and recovery of neurological function in neurodegenerative eye diseases and other eye *** this study,we intravitreally transplanted sEVs derived from human induced pluripotent stem cells(hiPSCs)and hiPSCs-differentiated NPCs(hiPSC-NPC)in a mouse model of optic nerve *** results show that these intravitreally injected sEVs were ingested by retinal cells,especially those localized in the ganglion cell *** with hiPSC-NPC-derived sEVs mitigated optic nerve crush-induced retinal ganglion cell degeneration,and regulated the retinal microenvironment by inhibiting excessive activation of *** analysis further revealed that hiPSC-NPC derived sEVs transported neuroprotective and anti-inflammatory miRNA cargos to target cells,which had protective effects on RGCs after optic nerve *** findings suggest that sEVs derived from hiPSC-NPC are a promising cell-free therapeutic strategy for optic neuropathy.

关键词： exosome miRNA neural progenitor cell neurodegeneration neuroinflammation neuroprotection optic nerve crush optic neuropathy retinal ganglion cell small extracellular vesicles

Optimization of an Artificial Intelligence Database and Camera Installation for Recognition of Risky Passenger Behavior in Railway Vehicles

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Computers, Materials & Continua 2025年第1期82卷 1277-1293页

作者： min-kyeong Kim Yeong Geol Lee Won-Hee Park su-hwan Yun Tae-Soon Kwon Duckhee Lee Railroad Test&Certification Division Korea Railroad Research Institute(KRRI)Cheoldo BangmulgwanroUiwang-si16105Republic of Korea Railroad Safety Division Korea Railroad Research Institute(KRRI)Cheoldo BangmulgwanroUiwang-si16105Republic of Korea

Urban railways are vital means of public transportation in *** than 30%of metropolitan residents use the railways,and this proportion is expected to *** enhance safety,the government has mandated the installation of closed-circuit televisions in all carriages by ***,cameras still monitored *** address this limitation,we developed a dataset of risk factors and a smart detection system that enables an immediate response to any abnormal behavior and intensive monitoring *** created an innovative learning dataset that takes into account seven unique risk factors specific to Korean railway *** data collection was conducted across the Shinbundang Line of the Incheon Transportation Corporation,and the Ui-Shinseol *** observed several behavioral characteristics and assigned unique annotations to *** also considered carriage *** performance was evaluated by camera placement and *** the camera installation plan was *** dataset will find immediate applications in domestic railway *** artificial intelligence algorithms will be verified shortly.

关键词： AI railway vehicle risk factor smart detection AI training data

Isospin Effect of Fragmentation Reaction on the Isotopic Distribution Producedin Intermediate Energy Heavy Ion Collisions

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Chinese Physics Letters 2000年第4期17卷 267-269页

作者： FANG De-Qing SHEN Wen-Qing FENG Jun CAI Xiang-Zhou WANG Jian-song su qian-min MA Yu-Gang Zhu Yong-tai LI Song-Lin WU He-Yu GOU Quan-bu JIN Gen-ming ZHAN Wen-Long GUO Zhong-Yan XIAO Guo-Qing Shanghai Institute of Nuclear Research Chinese Academy of SciencesShanghai 201800 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000

Fragments produced in the reaction of 60 MeV/n^(18)O on Be have been measured *** isotopic distribution of fragmentation reaction is well reproduced by a modified statistical abrasion-ablation model It is predicted that the isotopic distribution shifts toward the neutron rich side for neutron rich projectile,but this isospin effect decreases with the increase of the atomic number difference Z-Z_(A)and disappears at last,where Z and Z_(A)are atomic numbers of the isotopic distribution and the projectile respectively.

关键词： distribution atomic Collisions

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盾构施工引起地表变形预测系统的设计与实现

机械设计与研究 2009年第6期25卷 61-63页

作者：施一萍赵敏媛苏前敏上海工程技术大学电子电气工程学院上海201600

讨论了盾构施工引起地表变形的因素和机理,介绍了采用BP神经网络技术对地表变形预测系统进行设计与实现的过程。结合工程实践,对系统预测精度进行研究,结果表明,采用BP神经网络对盾构施工引起地表变形进行预测是一种行之有效的方法。

关键词：盾构施工地表变形 BP神经网络预测系统