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下尿路和外生殖器战创伤及其诊疗研究进展

解放军医学杂志 2024年第3期49卷 335-342页

作者：杨国荣吕凯凯吴洋洋宋涛袁清解放军总医院第三医学中心泌尿外科医学部北京100039 解放军医学院研究生院北京100017

近年来,随着现代战争模式、武器及防护装备的不断革新,战创伤的发生机制、模式发生了很大变化。防弹衣及简易爆炸装置的广泛使用使泌尿生殖系统战创伤发生率逐渐升高,且泌尿生殖系统战创伤的模式也发生了改变,即从内部结构(肾脏、输尿... 详细信息

近年来,随着现代战争模式、武器及防护装备的不断革新,战创伤的发生机制、模式发生了很大变化。防弹衣及简易爆炸装置的广泛使用使泌尿生殖系统战创伤发生率逐渐升高,且泌尿生殖系统战创伤的模式也发生了改变,即从内部结构(肾脏、输尿管、膀胱)转移到外部结构(阴囊、睾丸、阴茎、尿道),提示应将泌尿生殖系统战创伤的研究重点逐渐转移到下尿路及外生殖器创伤。本文就数次现代战争中泌尿生殖系统战创伤的发生率、治疗以及预后进行综述,主要阐述下尿路及外生殖器战创伤相关情况及其诊疗的相关进展。

关键词：泌尿生殖系统损伤下尿路外生殖器战创伤诊疗

激光重熔对激光粉末床熔合制备Ti-6Al-4V合金热稳定性的影响机制研究

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矿冶工程 2024年第3期44卷 135-139页

作者：詹宇星杨扬中南大学材料科学与工程学院湖南长沙410083

研究了激光重熔(LR)对激光粉末床熔合(LPBF)制备Ti-6Al-4V合金的组织性能和热稳定性的影响。结果表明,LR处理后,LRed-Ti-6Al-4V钛合金样品内α′相热稳定性显著提升,β-Ti相出现的温度点由500℃升至700℃。热处理后,LPBF-Ti-6Al-4V钛合... 详细信息

研究了激光重熔(LR)对激光粉末床熔合(LPBF)制备Ti-6Al-4V合金的组织性能和热稳定性的影响。结果表明,LR处理后,LRed-Ti-6Al-4V钛合金样品内α′相热稳定性显著提升,β-Ti相出现的温度点由500℃升至700℃。热处理后,LPBF-Ti-6Al-4V钛合金内晶粒持续生长,700℃以上出现明显的“短棒状”和“粗层片状”特征;而LRed-Ti-6Al-4V样品表层熔化区内晶粒仍维持等轴特征,700℃以上的熔化区和热影响区内呈现较为均匀细小的针状组织。两组样品的表面显微硬度值随温度升高而不断降低,并且分别在700℃和850℃显著下降,β-Ti晶粒的迅速粗化是引起硬度下降的主要原因。

关键词：增材制造 3D打印激光粉末床熔合激光重熔 Ti-6Al-4V 退火热处理热稳定性

节流式燃/氧分离组合固体火箭发动机动态工作过程数值研究

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固体火箭技术 2024年第2期47卷 181-187页

作者：王革杨铭王富祺杨帅关奔哈尔滨工程大学航天与建筑工程学院哈尔滨150001 北京精密机电控制设备研究所北京100076

利用商业软件ANSYS Fluent对节流式燃/氧分离组合固体火箭发动机动态工作过程进行数值研究,揭示该发动机基本动态工作过程以及节流阀作动速度的影响。结果表明,节流阀作动会导致发动机富氧燃烧室压强、节流阀出口质量流量以及发动机推... 详细信息

利用商业软件ANSYS Fluent对节流式燃/氧分离组合固体火箭发动机动态工作过程进行数值研究,揭示该发动机基本动态工作过程以及节流阀作动速度的影响。结果表明,节流阀作动会导致发动机富氧燃烧室压强、节流阀出口质量流量以及发动机推力出现负调现象;节流阀作动速度差异不影响发动机调节后的稳定工作状态;随着节流阀作动速度增大,发动机达到稳定工作状态所需时间逐渐缩短,实现性能调控的响应速度增快,但发动机各参数负调量也随之增大,从而增加了发动机发生振动的风险。

关键词：固体火箭发动机燃/氧分离发动机动态调节过程数值模拟

中华优秀传统文化如何有效融入统编语文教科书

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教育科学研究 2024年第6期 68-74页

作者：杨杨刘珊李新湖南师范大学教育科学学院 410081 湖南第一师范学院教育学院 410205 首都师范大学教育学院 100089

中华优秀传统文化是中华民族的集体文化记忆,它具有典型的凝聚性结构。对中华优秀传统文化进行回应、认同和延续,是语文教科书理应承担的责任。当前多元文化背景下各国文化发展同质化趋势的冲击、中华优秀传统文化自身的多样性以及文选... 详细信息

中华优秀传统文化是中华民族的集体文化记忆,它具有典型的凝聚性结构。对中华优秀传统文化进行回应、认同和延续,是语文教科书理应承担的责任。当前多元文化背景下各国文化发展同质化趋势的冲击、中华优秀传统文化自身的多样性以及文选型教科书的特质使得语文教科书传承中华优秀传统文化面临多重困境。中华优秀传统文化深度融入统编语文教科书,需要树立尊重多元与坚持文化自觉的传统文化教育意识,丰富统编语文教科书中优秀传统文化的内容与载体形式,促进统编语文教科书从文选型向整体型的过渡。

关键词：中华优秀传统文化语文教科书文化记忆统编教材

Exogenous electric field to accelerate wound healing

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Biomedical Engineering Communications 2024年第3期3卷 1-2页

作者： Kai-Qi yang Jia Chen Xiao-Mei Li Si-Yuan Chang Yan-Jun yang Yan-Ling Hu College of Material Engineering Fujian Agriculture and Forestry UniversityFuzhou 350108 China.2Medical Science and Technology Innovation Center School of RadiologyShandong First Medical University&Shandong Academy of Medical SciencesTai’an 271016 China.3School of Basic Medicine Medical College of Putian UniversityPutian 351100 China.4College of Life and Health Nanjing Polytechnic InstituteNanjing 210048 China.5School of Electrical and Computer Engineering College of EngineeringThe University of GeorgiaAthens 30602USA.

Wound healing is a critical physiological process in living organisms that includes repair cell proliferation and migration,etc.[1,2].While effective wound-healing treatment strategies have been developed in the past,few have actively controlled the behavior of skin cells to accelerate wound healing[3,4].The importance of accelerated wound healing lies in its ability to shorten treatment time,reduce the risk of infection,and lower the cost of *** stimulation can modulate cell behavior during wound healing by simulating endogenous electric fields,boosting cell migration,fibroblast proliferation,and granulation tissue growth more significantly than traditional methods[5-7].However,electrical stimulation devices’size,space limitations,and unsustainability make them challenging to use in clinical surgery,hindering real-time and convenient *** is therefore crucial to explore the miniaturization of electrical stimulation devices to advance the healing of skin wounds in clinical ***,Chen et *** a flexible micro-Zn-MnO2(mZMB)battery-based woundplast for wound management,which shows a promising path in biomedical applications(Figure 1)[8].

关键词： healing wound stimulation

High-performance carbon-electrode-based self-powered optoelectronic synaptic devices

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Science China(Information Sciences) 2024年第5期67卷 339-340页

作者： Wen HUANG Xuwen XIA Huixing ZHANG Tenglong GUO Pengjie HANG Bin LI Jiawei TANG Biao LI Chen ZHU Lei WANG Deren yang Xuegong YU Xing'ao LI Jiangsu Provincial Engineering Research Center of Low Dimensional Physics and New Energy & School of Science Nanjing University of Posts and Telecommunications College of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang University

A two-terminal self-powered optoelectronic structure could mimic synaptic functions of a human brain synapse unit(Figure 1(a)) based on the photovoltaic effects [1], demonstrating the potential for decreasing energy consumption for future computing. However, current self-powered optoelectronic synaptic devices face issues of stability and cost,which mainly arise from noble metal electrodes and independent hole transport layers used in these structures. Substituting low-cost carbon for these metal electrodes and carrier transport layers may promise to solve these challenges.

关键词：

Human ESC-derived vascular cells promote vascular regeneration in a HIF-1α dependent manner

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Protein & Cell 2024年第1期15卷 36-51页

作者： Jinghui Lei Xiaoyu Jiang Daoyuan Huang Ying Jing Shanshan yang Lingling Geng Yupeng Yan Fangshuo Zheng Fang Cheng Weiqi Zhang Juan Carlos Izpisua Belmonte Guang-Hui Liu Si Wang Jing Qu Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric DisordersXuanwu Hospital Capital Medical UniversityBeijing 100053China State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Aging Translational Medicine Center Intermational Center for Aging and CancerBeijing Municipal Geriatric Medical Research CenterXuanwu HospitalCapital Medical UniversityBeijing 100053China University of Chinese Academy of Sciences Beijing 100049China Institute for Stem Cell and Regeneration CASBeijing 100101China The Fifth People's Hospital of Chongqing Chongqing 400062China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China National Laboratory of Biomacromolecules CAs Center for Excellence in BiomacromoleculesInstitute of BiophysicsBeijing 100101China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of SciencesBeijing 100101China China National Center for Bioinformation Beijing 100101China Sino-Danish College University of Chinese Academy of SciencesBeijing 101408China Sino-Danish Center for Education and Research Beijing 101408China Aging Biomarker Consortium China Altos Labs San DiegoCA 92121United State

Hypoxia-inducible factor(HIF-1α),a core transcription factor responding to changes in cellular oxygen levels,is closely associated with a wide range of physiological and pathological ***,its differential impacts on vascular cell types and molecular programs modulating human vascular homeostasis and regeneration remain largely ***,we applied CRISPR/Cas9-mediated gene editing of human embryonic stem cells and directed differentiation to generate HIF-ia-deficient human vascular cells including vascular endothelial cells,vascular smooth muscle cells,and mesenchymal stem cells(MsCs),as a platform for discovering cell type-specific hypox-ia-induced response *** comparative molecular profiling across cell types under normoxic and hypoxic conditions,we provide insight into the indispensable role of HIF-1αin the promotion of ischemic vascular *** found human MSCs to be the vascular cell type most susceptible to HIF-1a deficiency,and that transcriptional inactivation of ANKZF1,an effector of HIF-1a,impaired pro-angiogenic ***,our findings deepen the understanding of HIF-ia in human angiogenesis and support further explorations of novel therapeutic strategies of vascular regeneration against ischemic damage.

关键词： HIF-1 human ESC vascular cell regeneration

基于压缩空气储能与增强型地热的三联产系统热力学分析

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中国电力 2024年第1期57卷 209-218页

作者：梁健王蒙杨亚欣胡杨姚尔人陕西省天然气股份有限公司陕西西安710016 陕西省水利电力勘测设计研究院陕西西安710005 西安交通大学能源与动力工程学院陕西西安710049

为提升压缩空气储能技术的能量利用率与供能灵活性,基于能量梯级利用原理,提出了一种耦合压缩空气储能与增强型地热技术的冷热电联产系统。通过建立系统的热力学模型,研究了关键运行参数对系统热力学性能的影响规律,并以系统(火用)效率... 详细信息

为提升压缩空气储能技术的能量利用率与供能灵活性,基于能量梯级利用原理,提出了一种耦合压缩空气储能与增强型地热技术的冷热电联产系统。通过建立系统的热力学模型,研究了关键运行参数对系统热力学性能的影响规律,并以系统(火用)效率和单位能量成本为目标函数,获得了系统的多目标优化解集。结果表明,膨胀机与换热器是系统高效运行的关键设备,提升这2个设备的运行效率对于系统热力学性能以及输出功量的提升作用显著,采用多目标优化方法得到系统的最优(火用)效率为55.73%,最优单位能量成本为6378.94元/kW,能量效率和相对节能率较设计工况分别提升了6.1%和10.68%。研究结果从热力学和经济学角度为系统的工程应用提供了理论依据。

关键词：压缩空气储能地热技术冷热电联产能量分析 (火用)分析

Carbon cathode with heteroatom doping and ultrahigh surface area enabling enhanced capacitive behavior for potassium-ion hybrid capacitors

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Rare Metals 2024年第5期43卷 2136-2149页

作者： Yan Xiong Ya-Fei Zhang Chun-Liu Zhu Lei yang Huan-Yu Liang Jing Shi Jing-Wei Chen Wei-QianTian Shuai Liu Zhi Li Jing-Yi Wu Huan-Lei Wang School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 2V4Canada

Potassium-ion hybrid capacitors(PIHCs)are widely regarded as highly promising energy storage devices,due to their exceptional energy density,impressive power density,and abundant potassium ***,restricted by the inherent capacitive storage mechanism,the carbon cathodes possess a much lower specific capacity than battery-type ***,designing high-performance carbon cathodes is extremely urgent for the development of ***,N,O codoped porous carbon(NOPC)was fabricated through the NaCl hard template method and combined KOH/melamine chemical activation technique,displaying the characteristics of abundant N/O content(4.7 at%/16.9 at%),ultrahigh specific surface area(3092 m^(2)g^(-1))and hierarchical pore *** designed NOPC cathode delivers a high specific capacity(164.4 mAh.g^(-1)at 0.05 A.g^(-1))and superior cyclability(95.1%retention ratio at 2 A·g^(-1)over 2500 cycles).Notably,the adjustable ratio of micropores to mesopores facilitates the achievement of the optimal bal-ance between capacity and rate ***,the pseudocapacitance can be further augmented through the incorporation of N/O functional *** expected,the graphite//NOPC based PIHC possesses a high energy density of 113 Wh·kg-at 747 W·kg^(-1)and excellent capacity retention of 84.4% fter 400 cycles at 1.0 A·g^(-1).This work introduces a novel strategy for designing carbon cathodes that enhances the electrochemical performance of PIHCs.

关键词： Template method N/O co-doping High specific surface area Carbon cathode Potassium-ion capacitors