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一种液压破碎锤活塞失效分析及工艺改进

机械工程师 2024年第4期 145-147页

作者：韩玉娟王尊礼杨晟豪江苏联合职业技术学院(淮安分院) 江苏淮安223005 江苏力博士机械股份有限公司江苏淮安223005 南京工程学院机械学院南京211167

活塞是液压破碎锤的关键部件,活塞问题会导致破碎锤整机失效。一种破碎锤活塞在用户使用冲击过程中出现开裂。对开裂的活塞进行了化学成分、金相组织和开裂原因分析。结果表明,热处理工艺原因是导致活塞在冲击过程中失效的原因。通过改... 详细信息

活塞是液压破碎锤的关键部件,活塞问题会导致破碎锤整机失效。一种破碎锤活塞在用户使用冲击过程中出现开裂。对开裂的活塞进行了化学成分、金相组织和开裂原因分析。结果表明,热处理工艺原因是导致活塞在冲击过程中失效的原因。通过改进热处理工艺,有效防止了活塞在使用过程中产生凹陷、裂纹和局部剥落。

关键词：液压破碎锤活塞失效热处理工艺

Cluster consensus of networks of second-order multi-agent systems with inter-cluster non-identical inputs 25th

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Cluster consensus of networks of second-order multi-agent sy...

Social support for and features of Chinese adults with epilepsy

第25届中国控制与决策会议

作者： yujuan han Wenlian Lu Tianping Chen School of Mathematical Sciences Fudan University Centre for Computational Systems Biology Fudan University School of Computer Science Fudan University

ISBN: (纸本)9781467355339

This paper studies the second order cluster consensus problem for a network of multi-agents. We consider general graph topologies including time variation. A comprehensive analysis is provided. For static topology case, we show that communications among agents and inter-cluster nonidentical inputs generically leads the system to second order cluster consensus. A common Lyapunov function is provided for time varying topologies case. Numerical simulation results demonstrate that the second order cluster consensus can be achieved using the proposed algorithms.

关键词： cluster consensus second-order dynamical system inter-cluster non-identical inputs

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Acta Epileptologica 2022年第3期5卷 169-174页

作者： Rui Zhong hanyu Zhang yujuan han Xin Guo Weihong Lin Department of Neurology The First Hospital of Jilin UniversityChangchun 130012China

Background:The lack of social support for adults with epilepsy(AWEs)is receiving increased attention,as it may result in low quality of *** study was aimed to confirm the demographic characteristics of and clinical factors associated with social support for ***:AWEs were consecutively recruited from our *** 10-term Social Support Rating Scale(SSRS)was used to measure social support.A linear regression analysis with stepwise selection was performed to analyze the independent variables associated with social support for ***:In total,165 AWEs were consecutively included in the present *** regression analysis showed that the marital status(t=-3.550,β=-0.272,P=0.001),the age at onset(t=2.545,β=0.192,P=0.012),and the QOLIE-31 score(t=3.144,β=0.221,P=0.002)were independent variables associated with social support for ***:Our findings suggest that the poor social support is associated with childhood onset of epilepsy and the unmarried *** study also confirmed a negative influence of low social support on quality of life in AWEs.

关键词： Epilepsy Marital status Childhood-onset epilepsy Social support Quality of life

系统性康复治疗对不同年龄脑卒中患者认知、运动及平衡功能的影响

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中国老年保健医学 2024年第3期22卷 18-21页

作者：韩玉娟马艳玲徐浩明悦芳芳李婕旻林依婷陈心雅臧大维康晓平北京小汤山医院天坛小汤山康复中心 102211 首都医科大学附属北京天坛医院康复医学科 100050

目的探讨系统性康复治疗对不同年龄组脑卒中患者认知、运动及平衡功能的影响。方法选取2023年1月至2023年6月在北京小汤山医院天坛小汤山康复中心接受康复治疗的脑卒中患者50例为研究对象,根据年龄分层分为中青年组(18~59岁)22例和老年... 详细信息

目的探讨系统性康复治疗对不同年龄组脑卒中患者认知、运动及平衡功能的影响。方法选取2023年1月至2023年6月在北京小汤山医院天坛小汤山康复中心接受康复治疗的脑卒中患者50例为研究对象,根据年龄分层分为中青年组(18~59岁)22例和老年组(60~80岁)28例,两组均给予系统性康复治疗,比较两组治疗前后临床指标评分,包括简易智力状态检查量表(MMSE)评分、蒙特利尔认知评估量表(MOCA)、Fugl-Meyer运动功能(FMA)评分、Fugl-Meyer平衡功能评定、日常生活活动能力量表(ADL)。结果两组治疗后与治疗前相比,认知、运动、平衡及日常生活活动能力方面均有明显的改善,差异有统计学意义(P0.05)。结论任何年龄组脑卒中患者接受系统性康复治疗后,认知、运动、平衡等功能障碍均能得到明显改善,患者生活质量得以提升,但中青年组患者治疗效果相较于老年组未见明显优势,因此建议不应因为年龄因素而减少老年脑卒中患者常规康复的强度和持续时间。高龄脑卒中患者同样需要系统有效的康复治疗。

关键词：系统性康复治疗不同年龄组脑卒中认知平衡功能

Physicochemical principles of hydrogen metallurgy in blast furnace

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Journal of Iron and Steel Research International 2024年第1期31卷 46-63页

作者： han-jie Guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China

Based on the stoichiometric method and the free energy minimization method,an ideal model for the reduction of iron oxides by carbon and hydrogen under blast furnace conditions was established,and the reduction efficiency and theoretical energy consumption of the all-carbon blast furnace and the hydrogen-rich blast furnace were *** results show that after the reduction reaction is completed at the bottom of the blast furnace,the gas produced by reduction at 1600℃still has a certain excessive reduction capacity,which is due to the hydrogen brought in by the hydrogen-rich blast as well as the excess carbon monoxide generated by the reaction of the coke and the oxygen brought in by the *** the process of the gas with excessive reduction capacity rising from the bottom of the blast furnace and gas reduction process,the excessive reduction capacity of the gas gradually decreases with the increase in the dydrogen content in the *** the all-carbon blast furnace,the excess gas reduction capacity is the strongest,and the total energy consumption per ton of iron reduction is the *** shows that,for the current operation mode of the blast furnace,adding hydrogen in the blast furnace cannot reduce the consumption of carbon required for reduction per ton of iron,but rather increases the consumption of carbon.

关键词： Hydrogen metallurgy Excess gas reduction capacity Theoretical energy consumption Hydrogen-rich blast furnace Thermodynamic model Gibbs minimum free energy method

Engineered plant extracellular vesicles for autoimmune diseases therapy

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Nano Research 2024年第4期17卷 2857-2873页

作者： Ruina han Yan Wu Yafei han Xiangfei Liu han Liu Jiacan Su Institute of Translational Medicine Shanghai UniversityShanghai 200444China Organoid Research Center Shanghai UniversityShanghai 200444China National Center for Translational Medicine(Shanghai)SHU Branch Shanghai UniversityShanghai 200444China Department of Orthopedics Shanghai Zhongye HospitalShanghai 200941China Department of Orthopedics Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092China

Autoimmune diseases(AID)encompass a diverse array of conditions characterized by immune system dysregulation,resulting in aberrant responses of B cells and T cells against the body’s own healthy *** extracellular vesicles(PEVs)are nanoscale particles enclosed by phospholipid bilayers,secreted by plant cells,which facilitate intercellular communication by transporting various bioactive *** to their nanoscale structure,safety,abundant sources,low immunogenicity,high yield,biocompatibility,and effective targeting of the colon and liver,PEVs are regarded as a promising platform for the treatment of *** review provides a comprehensive summary of PEV biogenesis,physicochemical and biological properties,internalization mechanisms,isolation methods,and their applications in various diseases,with a specific focus on their potential roles in ***,we propose engineering approaches and administration methods for ***,we present an overview of the advantages and challenges associated with utilizing PEVs for the treatment of *** gaining a comprehensive understanding of PEVs,we anticipate the development of innovative therapeutic strategies for *** and engineered PEVs hold substantial promise as a valuable resource for innovative technologies in AID treatment.

关键词： autoimmune diseases plant extracellular vesicles extracellular vesicles engineering modification

基于SMIoT的软件定义移动自组织物联网组网机制研究

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无线互联科技 2020年第6期17卷 25-26,33页

作者：韩瑜娟西南民族大学计算机科学与技术学院四川成都610225

文章充分结合SDN集中管控、MANET分布灵活和IoT智能感知的优势,采用SDN+MANET+IoT的思路实现异构网络融合组网,满足智能巡检的需求。利用可编程性高的树莓派智能小车作为IoT硬件平台,并在此基础上搭建分布式MANET网络,实现智能小车集群... 详细信息

文章充分结合SDN集中管控、MANET分布灵活和IoT智能感知的优势,采用SDN+MANET+IoT的思路实现异构网络融合组网,满足智能巡检的需求。利用可编程性高的树莓派智能小车作为IoT硬件平台,并在此基础上搭建分布式MANET网络,实现智能小车集群的自组织组网。同时,为实现智能巡检和相互协作,将OVS交换机移植到树莓派平台,利用扩展的OpenFlow协议,对分布式智能小车集群实施基于SDN技术的集中管控,统一管理集群的物理感知能力、移动监控能力和数据转发能力,进而搭建SMIoT。

关键词：软件定义网络移动自组织网络物联网

FAST unveils a new era in the discovery of long-period pulsars in globular clusters

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Science China(Physics,Mechanics & Astronomy) 2024年第6期67卷 185-186页

作者： Zhanwen han International Centre of Supernovae Yunnan Key LaboratoryYunnan ObservatoriesChinese Academy of SciencesKunming 650011China

Globular clusters(GC)are among the oldest celestial bodies in the Milky *** possessing millions of stars and have been going through abundant stellar interactions,GCs are futile ground for hunting for compact objects,particularly,neutron stars.A significant number of fast-spinning millisecond pulsars(MSPs)have been discovered,comprising the majority of known GC pulsars.

关键词： stars pulsars abundant

On equivalence of state-based potential games

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Science China(Information Sciences) 2024年第6期67卷 313-327页

作者： han WU Jinhuan WANG Institute of Mathematics School of ScienceHebei University of Technology

In this paper, we explore state-based potential games using the semi-tensor product of ***, applying the potential equation, we derive both a necessary and sufficient condition as well as a sufficient condition to verify whether a state-based game qualifies as a potential game. Next, we present two static equivalence conditions of state-based potential games. We then delve into dynamic equivalence. We propose a criterion that allows us to identify state-based games that are dynamically equivalent to state-based potential games and share similar dynamic properties. Ultimately, we introduce the concept of state-based networked evolutionary games. We provide a necessary and sufficient condition to ensure that a state-based networked evolutionary game can be classified as a state-based potential game.

关键词： semi-tensor product of matrices state-based potential game verification equivalence state-based networked evolutionary game