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地学前缘 2009年第S1期16卷 204-204页

作者： L.w.deng~1,Y.w.Fei~2,X.Liu~1,Z.Z.Gong~3 1.School of Earth and Space Science,Peking University,Beijing 100871,China. 2.Geophysical Laboratory,Carnegie Institution of washington,5251 Broad Branch Road,Nw,DC 20015,USA 3.Institute of Spacecraft Environment Engineering,Beijing 100094,China

The presence of light element(s)in the Earth’s core is necessary in order to explain the observed density and velocity discrepancy for the core(Anderson and Ahrens,1994).O,Si,S,C and H were suggested as potential candidates based on cosmochemical considerations(Stevenson,1981).High-pressure experiment results,in conjunction with theoretical and cosmochemical evidences,argued that it is difficult for any one of them to account for the core

关键词： sulfur-carbon-iron high pressure melting planetary core

Spherical cavity-expansion model for penetration of reinforced-concrete targets

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Acta Mechanica Sinica 2019年第4期35卷 535-551页

作者： Y.J.deng w.J.Song X.w.Chen Institute of Systems Engineering China Academy of Engineering PhysicsP.O.Box 919-416Mianyang 621999China Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province Mianyang 621000China Department of Civil Engineering and Architecture Southwest University of Science and TechnologyMianyang 621000China Department of Mechanics and Engineering Science College of EngineeringPeking UniversityBeijing 100871China Advanced Research Institute for Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China State Key Lab of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

The feature of reinforcing bars is introduced into dynamic cavity-expansion theory. Based on the elastic-plastic response penetration model of plain (i.e., unreinforced) concrete (Forrestal and Tzou, 1997), a dynamic spherical cavity-expansion penetration model for reinforced-concrete targets is developed with consideration of the circumferential restriction effect derived from reinforcing bars in the crushed region. The theoretical solution and simplified calculation formula for the cavity radial stress in incompressible and compressible reinforced concrete are obtained by introducing a reinforcement ratio as the volume fraction of rebars in the concrete target. A damping function is presented to describe the restriction effect of a single layer of reinforcing bars on the surrounding concrete, thus establishing a model to calculate the penetration resistance of multilayer reinforced-concrete targets. Compared with test data for the penetration depth, this model considering the circumferential restriction effect produces better results compared with the existing theory.

关键词： Dynamic cavity-expansion theory Reinforced concrete Penetration resistance Reinforcement ratio

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轴类锻件失效分析及其对策

金属加工(热加工) 2025年第1期 127-132页

作者：邓云江苏省特种设备安全监督检验研究院江阴分院

轴类锻件广泛应用于特种设备行业和机械行业中，轴类锻件需要自身的刚性，也需要承受在传递过程中产生的扭矩，再加上生产过程经过热成形，锻件内部的缺陷存在敏感性，极易发生失效。首先，详细介绍了两大容易失效的轴类锻件：离心风机... 详细信息

轴类锻件广泛应用于特种设备行业和机械行业中，轴类锻件需要自身的刚性，也需要承受在传递过程中产生的扭矩，再加上生产过程经过热成形，锻件内部的缺陷存在敏感性，极易发生失效。首先，详细介绍了两大容易失效的轴类锻件：离心风机轴和曲轴。其次，通过发现的失效模式进行定位解剖、试验分析，发现钢锭中存在球状氧化物与硫化物，夹杂物在锻压时因破坏钢的连续性而产生裂纹，锻件由于心部白点而报废，是由锻后热处理工艺不当所致。最后，通过分析对原材料控制、锻后热处理工艺、使用中的加固保护三方面来控制此失效模式。

关键词：轴类锻件安全性能时效失效

镇域耕地整治潜力测算和分级研究——以涪陵区青羊镇为例

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西南师范大学学报（自然科学版） 2015年第3期40卷 125-131页

作者：樊天相杨庆媛潘菲何春燕邓永旺何建西南大学地理科学学院重庆400715

在ArcGIS软件的技术支持下,以重庆市涪陵区青羊镇为研究区域,研究镇域耕地整治潜力的测算和分级,即在测算耕地整治数量潜力的基础上,通过将反映耕地整治质量潜力的产能潜力换算成为新增耕地面积潜力,得到综合了耕地整治质量潜力与数量... 详细信息

在ArcGIS软件的技术支持下,以重庆市涪陵区青羊镇为研究区域,研究镇域耕地整治潜力的测算和分级,即在测算耕地整治数量潜力的基础上,通过将反映耕地整治质量潜力的产能潜力换算成为新增耕地面积潜力,得到综合了耕地整治质量潜力与数量潜力的新增耕地面积与新增耕地系数,实现了耕地整治潜力在数量和质量的统一,并利用新增耕地面积、新增耕地系数双指标法对青羊镇进行了耕地整治潜力分级评价.

关键词：耕地整治潜力测算镇域青羊镇

Performance enhancement of triboelectric nanogenerator based on BaTiO3-incorporated PVDF-HFP nanofibers for self-powered wearable sensors

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Science China Technological Sciences 2025年第1期 266-273页

作者： Tianjie deng Xi ZHANG Zhuanqing YANG Gang XIANG College of Physics Sichuan University

The triboelectric nanogenerators（TENGs） based on polyvinylidene fluoride（PVDF） have attracted significant attention due to their high energy conversion efficiency and strong flexibility. Indeed, the TENGs with higher electrical performance and stronger mechanical robustness are more desirable. In this context, we design and fabricate TENGs based on nanofiber（NF） layer of Poly（vinylidene fluoridehexafluoropropylene）(PVDF-HFP), a copolymer of PVDF with better mechanical properties, in which the enhancement of dielectric constant and specific surface area is achieved by incorporation of BaTiO3into PVDF-HFP NFs using electrospinning. The results show that the TENGs demonstrates superior electrical performance. The optimized TENG exhibits an open-circuit voltage（VOC） of 432 V, a short-circuit current（ISC） of 44.2 μA, and a maximum power density（Pd） of 2.25 w/m2. Practical applications of the optimized TENG are also demonstrated, including its use as power source, cylindrical rotating energy harvester and self-powered wearable sensor. The findings give insights into the fabrication, performance and application of the TENGs based on BaTiO3-incorporated PVDF-HFP NFs, offering promising solutions for energy harvesting and diverse applications.

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Gravitation-enabled Forward Acceleration during Flap-bounding Flight in Birds

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Journal of Bionic Engineering 2018年第3期15卷 505-515页

作者： Yi wang Bret w. Tobalske Bo Cheng Xinyan deng School of Mechanical Engineering Purdue University West Lafayette IN 47907 USA Field Research Station at Fort Missoula Division of Biological Sciences University of Montana Missoula MT 59812 USA Department of Mechanical and Nuclear Engineering Pennsylvania State University University Park PA 16802 USA

Flap-bounding, a form of intermittent flight, is often exhibited by small birds over their entire range of flight speeds. Its purpose is unclear during low to medium speed （2 m·s^-1-8 m·s^-1） flight： aerodynamic models suggest continuous flapping would require less power output and lower cost of transport. To explore its functional significance at low speeds, we measured body trajectory and kinematics of wings and tail of two zebra finches （Taeniopygia guttata） during flights between two perches in a laboratory. The flights consisted of three phases： initial, descending and ascending. Zebra finch first accelerated using continuous flapping, then descended, featuring intermittent bounds. The flight was completed by ascending using nearly-continuous flapping. when exiting bounds in descending phase, they achieved higher velocity than that of pre-bound forward by swinging their body forward similar to pendular motion with conserved me- chanical energy. we recorded takeoffs of three black-capped chickadees （Poecile atricapillus） in the wild and also found similar kine- matics. Our modeling of power output indicated finch achieved higher velocity （13%） with lower cost of transport （9%） when descending, compared with continuous flapping in previously studied pigeons. Flap-bounding could be useful for unmanned aerial vehicle design by mimicking descending flight to achieve rapid take-off and transition to forward flight.

关键词： zebra finch intermittent flight aerodynamics power unmanned aerial vehicle

Persistent alterations in gray matter in COVID-19 patients experiencing sleep disturbances:a 3-month longitudinal study

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Neural Regeneration Research 2025年第10期20卷 3013-3024页

作者： Kaixuan Zhou Gaoxiong Duan Ying Liu Bei Peng Xiaoyan Zhou Lixia Qin Lingyan Liang Yichen wei Qingping Zhang Xiaocheng Li Haixia Qin Yinqi Lai Yian Lu Yan Zhang Jiazhu Huang Jinli Huang Yinfei Ouyang Bolin Bin Mingming Zhao Jun Liu Jianrong Yang Demao deng Guangxi Key Laboratory of Special Biomedicine School of MedicineGuangxi UniversityNanningGuangxi Zhuang Autonomous RegionChina Department of Radiology the People’s Hospital of Guangxi Zhuang Autonomous RegionGuangxi Academy of Medical SciencesNanningGuangxi Zhuang Autonomous RegionChina Department of Sleep Medicine the People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina Department of Radiology The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Guangxi Clinical Research Center for Sleep Medicine the People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxi Zhuang Autonomous RegionChina

Sleep disturbances are among the most prevalent neuropsychiatric symptoms in individuals who have recovered from severe acute respiratory syndrome coronavirus 2 *** studies have demonstrated abnormal brain structures in patients with sleep disturbances who have recovered from coronavirus disease 2019(COVID-19).However,neuroimaging studies on sleep disturbances caused by COVID-19 are scarce,and existing studies have primarily focused on the long-term effects of the virus,with minimal acute phase *** a result,little is known about the pathophysiology of sleep disturbances in the acute phase of *** address this issue,we designed a longitudinal study to investigate whether alterations in brain structure occur during the acute phase of infection,and verified the results using 3-month follow-up data.A total of 26 COVID-19 patients with sleep disturbances(aged 51.5±13.57 years,8 women and 18 men),27 COVID-19 patients without sleep disturbances(aged 47.33±15.98 years,9 women and 18 men),and 31 age-and gender-matched healthy controls(aged 49.19±17.51 years,9 women and 22 men)were included in this *** COVID-19 patients with sleep disturbances were included in a longitudinal *** found that COVID-19 patients with sleep disturbances exhibited brain structural changes in almost all brain *** cortical thicknesses of the left pars opercularis and left precuneus were significantly negatively correlated with Pittsburgh Sleep Quality Index ***,we observed changes in the volume of the hippocampus and its subfield regions in COVID-19 patients compared with the healthy *** 3-month follow-up data revealed indices of altered cerebral structure(cortical thickness,cortical grey matter volume,and cortical surface area)in the frontal-parietal cortex compared with the baseline in COVID-19 patients with sleep *** findings indicate that the sleep disturbances patients had altered morphology in the cortical an

关键词： brain structure cortical gray matter volume cortical surface area cortical thickness hippocampus magnetic resonance imaging Pittsburgh Sleep Quality Index severe acute respiratory syndrome coronavirus 2 infections sleep disturbances sub-cortical volume

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光伏阵列故障在线诊断技术的研究

科学技术创新 2025年第2期 60-63页

作者：邓云广西职业技术学院大数据学院广西南宁

针对光伏阵列裂纹、热斑、开路、短路等故障,人工巡检方式存在检查效率低、准确率不高的问题,本文提出了光伏组件故障在线检测及诊断方法,通过提取光伏组件故障特征参数,建立故障类型与故障原因映射关系网,并反映在神经网络的结构、连... 详细信息

针对光伏阵列裂纹、热斑、开路、短路等故障,人工巡检方式存在检查效率低、准确率不高的问题,本文提出了光伏组件故障在线检测及诊断方法,通过提取光伏组件故障特征参数,建立故障类型与故障原因映射关系网,并反映在神经网络的结构、连接权值和阈值之中,将故障数据录入到经过训练的神经网络模型中,进而实现光伏组件的故障监测及诊断。本文对提高光伏发电运维效率,以及降低运维成本具有十分重要的意义。

关键词：光伏阵列故障诊断神经网络

中国式现代化理论的内在逻辑——学习贯彻党的二十届三中全会精神

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河南社会科学 2025年第1期33卷 13-24页

作者：冯颜利邓雪梅重庆大学马克思主义学院重庆400044

党的二十大阐述的中国式现代化理论,首先,体现于现代化的中国特色与世界普遍性的有机统一,展现了中国式现代化理论的深刻内涵与重要特征。其次,中国式现代化理论在中国现代化建设实践中创立、形成,是实践经验的理论淬炼、升华而形成的... 详细信息

党的二十大阐述的中国式现代化理论,首先,体现于现代化的中国特色与世界普遍性的有机统一,展现了中国式现代化理论的深刻内涵与重要特征。其次,中国式现代化理论在中国现代化建设实践中创立、形成,是实践经验的理论淬炼、升华而形成的中国特色知识体系,具有理论来自实践的内在逻辑。再次,中国式现代化理论来自中国式现代化建设实践,又回到并指导中国式现代化建设实践,这就既要处理好建设过程中的理论与实践的关系问题,还要处理好政策转换为实践的机制问题,更要深刻把握好理论与实践良性互动的内在逻辑。此外,党的二十届三中全会通过的《中共中央关于进一步全面深化改革、推进中国式现代化的决定》在强调“继续完善和发展中国特色社会主义制度,推进国家治理体系和治理能力现代化”的总要求中,聚焦战略任务、瞄准体制机制改革、着力国家治理体系和治理能力现代化建设与水平的提升,这就要进一步把握好理论不断完善的内在逻辑。总之,只有深刻把握中国式现代化理论的内在逻辑,才能进一步全面深化改革;只有不断推进中国式现代化,才能凝心聚力全面建设社会主义现代化国家,以中国式现代化全面推进中华民族伟大复兴。

关键词：中国式现代化理论内在逻辑

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嘉绒藏绣纹样在女士化妆包设计中的应用研究

皮革科学与工程 2025年第1期35卷 107-113页

作者：朱文霜邓梦玮桂林理工大学艺术学院广西桂林541004

嘉绒藏族织绣工艺蕴含着丰富的文化内涵和艺术魅力,嘉绒藏绣非遗文化的创造性转化和发展能更好的保留传统文化记忆。通过文献调研法和案例分析法阐述嘉绒藏绣的纹样技法、风格特点及其当代应用,用设计学方法对嘉绒藏绣代表性纹样进行提... 详细信息

嘉绒藏族织绣工艺蕴含着丰富的文化内涵和艺术魅力,嘉绒藏绣非遗文化的创造性转化和发展能更好的保留传统文化记忆。通过文献调研法和案例分析法阐述嘉绒藏绣的纹样技法、风格特点及其当代应用,用设计学方法对嘉绒藏绣代表性纹样进行提取、分解、重构和再设计,并结合其典型的色彩和布局,融入当下文创市场流行的中青年女士化妆包中,验证嘉绒藏绣传统技艺活态化传承的可行性,拓展女士化妆包的设计创新路径。

关键词：刺绣纹样化妆包非遗文化设计嘉绒藏族

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