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Microstructure and tribological behavior of tungsten inert gas welding arc brazing tin-based babbit

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Rare Metals 2020年第2期39卷 193-199页

作者： fang-ming zhou Qing-Ya Zhang ming-Xiao Shi Hui Li Jun-Wu Guo Jiangsu Province Key Laboratory of Advanced Welding Technology Jiangsu University of Science and TechnologyZhenjiang212003China

The microstructure of the tin-based babbit obtained by the method of tungsten inert gas welding(TIG)arc brazing was studied by optical microscopy(OM)and X-ray diffraction(XRD).Tribological behavior was investigated by high-temperature friction and wear testing machine(HTFWT),laser scanning confocal microscopy(LSCM),scanning electron microscopy(SEM)and energydispersive spectrometer(EDS).It can be found that the higher welding current of the melting tin-based babbit makes it possible to form isomer structure with fine crystals of the cubic SnSb compounds and large star Cu6Sn5 compounds so that a higher hardness can be achieved,and a lower wear rate can be obtained over the entire distance of sliding *** the applied load is 2 N,the contact surface is oxidized due to the accumulation of friction heat and oxide,which plays a role of lubricated ***,the softer Sn-based solid solution forms obvious furrow under abrasive wear,and the harder SbSn and Cu6Sn5 intermetallic compounds shatter and leave a hole under friction.

关键词： Tin-based babbit TIG arc brazing Microstructure Tribological behavior

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

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七自由度仿生机器人系统冗余问题研究

机械设计与制造 2014年第12期 194-196,199页

作者：方明周曹恒朱钧华东理工大学机械与动力工程学院上海200237

人体下肢的七自由度模型包括髋关节,膝关节和踝关节,但实际中下肢的运动只需要6个自由度即可,由于冗余引起的运动学干涉却没有现成的数学方法可以解决,同时又期望可穿戴机器人即外骨骼与人的交互能够同步,因而从运动学角度解决系统冗余... 详细信息

人体下肢的七自由度模型包括髋关节,膝关节和踝关节,但实际中下肢的运动只需要6个自由度即可,由于冗余引起的运动学干涉却没有现成的数学方法可以解决,同时又期望可穿戴机器人即外骨骼与人的交互能够同步,因而从运动学角度解决系统冗余问题。为了用数学方法描述冗余,定义一个旋转角度:由下肢大腿和小腿组成的平面绕髋关节和踝关节之间的虚拟轴的旋转角度。通过Matlab软件得到机器人的运动空间并与正常人体的运动空间进行比对,从而验证其可行性。

关键词：下肢外骨骼冗余自由度

1-A Nanoscale Homochiral Cobalt(Ⅱ) -base cluster:Structure,Magnetic Properties,Elimination/Exchange Reaction of N3- Bridge in Solution and Assembly Process Study

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1-A Nanoscale Homochiral Cobalt(Ⅱ) -base cluster:Structure,...

Treadmill exercise in combination with acousto-optic and olfactory stimulation improves cognitive function in APP/PS1 mice through the brain-derived neurotrophic factor-and Cygb-associated signaling pathways

中国化学会第六届全国结构化学学术会议

作者： Yue-Qiao Hu,Fu-fang zhou,ming-Hua Zeng~* School of Chemistry & Chemical Engineering, Guangxi Normal University,Guilin,541004

During the past decade the attention of coordination chemists is increasingly directed to the coordination clusters(CCs).But in fact,the understanding of reaction processes and mechanisms that take place in solution conditions remain limited,means that we still have little synthetic control. [Co(L-2H)(HL)(NO)·23HO](L= S,S-Hbzimed)(1),which has SMM behavior,was obtained by the

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来源： cnki会议评论

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Neural Regeneration Research 2025年第9期20卷 2706-2726页

作者： Biao Xiao Chaoyang Chu Zhicheng Lin Tianyuan fang Yuyu zhou Chuxia Zhang Jianghui Shan Shiyu Chen Liping Li Department of Physiology and Pharmacology Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Ningbo Key Laboratory of Behavioral Neuroscience Health Science CenterNingbo UniversityNingboZhejiang ProvinceChina Key Laboratory of Addiction Research of Zhejiang Province NingboZhejiang ProvinceChina

A reduction in adult neurogenesis is associated with behavioral abnormalities in patients with Alzheimer's ***,enhancing adult neurogenesis represents a promising therapeutic approach for mitigating disease symptoms and ***,nonpharmacological interventions aimed at inducing adult neurogenesis are currently *** individual non-pharmacological interventions,such as aerobic exercise,acousto-optic stimulation,and olfactory stimulation,have shown limited capacity to improve neurogenesis and cognitive function in patients with Alzheimer's disease,the therapeutic effect of a strategy that combines these interventions has not been fully *** this study,we observed an age-dependent decrease in adult neurogenesis and a concurrent increase in amyloid-beta accumulation in the hippocampus of amyloid precursor protein/presenilin 1 mice aged 2-8 *** deposition became evident at 4 months,while neurogenesis declined by 6 months,further deteriorating as the disease ***,following a 4-week multifactor stimulation protocol,which encompassed treadmill running(46 min/d,10 m/min,6 days per week),40 Hz acousto-optic stimulation(1 hour/day,6 days/week),and olfactory stimulation(1 hour/day,6 days/week),we found a significant increase in the number of newborn cells(5'-bromo-2'-deoxyuridine-positive cells),immature neurons(doublecortin-positive cells),newborn immature neurons(5'-bromo-2'-deoxyuridine-positive/doublecortin-positive cells),and newborn astrocytes(5'-bromo-2'-deoxyuridine-positive/glial fibrillary acidic protein-positive cells).Additionally,the amyloid-beta load in the hippocampus *** findings suggest that multifactor stimulation can enhance adult hippocampal neurogenesis and mitigate amyloid-beta neuropathology in amyloid precursor protein/presenilin 1 ***,cognitive abilities were improved,and depressive symptoms were alleviated in amyloid precursor protein/presenilin 1 mice

关键词： acousto-optic stimulation adult neurogenesis Alzheimer's disease amyloid precursor protein/presenilin 1 mice amyloid-beta deposition brain cell apoptosis cognitive impairment depression-like behavior involuntary treadmill exercise olfactory stimulation serum metabolites

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负重型下肢外骨骼机器人机构研究与仿真

华东理工大学学报（自然科学版） 2014年第5期40卷 656-659页

作者：方明周王瑜朱钧何立冬曹恒华东理工大学机械与动力工程学院上海200237

设计兼顾人体运动灵活性与有效承载能力的下肢外骨骼机械结构,是负重型下肢外骨骼改善人机协同性、提高承载能力的关键技术之一。针对华东理工大学设计的外骨骼机器人"ELEbot"的结构进行研究并仿真。这种结构能够根据穿戴者步态的变化,... 详细信息

设计兼顾人体运动灵活性与有效承载能力的下肢外骨骼机械结构,是负重型下肢外骨骼改善人机协同性、提高承载能力的关键技术之一。针对华东理工大学设计的外骨骼机器人"ELEbot"的结构进行研究并仿真。这种结构能够根据穿戴者步态的变化,引起自身结构的变化,进而改变下肢外骨骼的空间力闭环,使外骨骼满足不同步态下的功能特性。通过Matlab中的simmechanics模块对建立的模型进行仿真分析,得到人体下肢末端的运动空间,并与正常人体的运动空间比较,得出两者匹配的结论,验证了该结构的可行性。

关键词：外骨骼机器人自由度 simmechanic Solidworks

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飞机隔音棉包覆层热封参数优化研究

包装工程 2014年第19期35卷 46-51页

作者：何立冬曹恒方明周陈诚华东理工大学上海200237

目的研究飞机隔音棉制造过程中包覆层的最佳热封参数。方法分析不同的热封工艺参数(热封温度、热封压力、热封时间)对隔音棉包覆层热封强度的影响,建立主要热封参数与热封强度的数学模型。在此基础上,利用LabVIEW对材料进行热封强度仿... 详细信息

目的研究飞机隔音棉制造过程中包覆层的最佳热封参数。方法分析不同的热封工艺参数(热封温度、热封压力、热封时间)对隔音棉包覆层热封强度的影响,建立主要热封参数与热封强度的数学模型。在此基础上,利用LabVIEW对材料进行热封强度仿真计算和热封参数优化设计,并对数学模型得出的最佳热封工艺参数进行实验验证。结果模型的理论计算值与实验结果基本一致,验证了模型的正确性。结论实现了隔音棉材料热封参数的优化,为某飞机制造公司在隔音棉热封中热封参数的设定提供了参考。

关键词：热封强度工艺参数仿真计算参数优化

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基于离散型荧火虫算法的高校智能排课的研究

数学的实践与认识 2016年第19期46卷 23-30页

作者：沈桂芳李敬明周园园安徽新华学院信息工程学院安徽合肥230088 合肥工业大学管理学院安徽合肥230009

针对传统排课方法排课效率低、成功率低、冲突率高等无法满足现代高校教务管理要求的现状,提出一种基于离散型荧火虫算法的智能排课模型.首先,根据教师、班级、课程、教室及授课时间要求建立一个多目标、多约束的排课数学模型,采用二分... 详细信息

针对传统排课方法排课效率低、成功率低、冲突率高等无法满足现代高校教务管理要求的现状,提出一种基于离散型荧火虫算法的智能排课模型.首先,根据教师、班级、课程、教室及授课时间要求建立一个多目标、多约束的排课数学模型,采用二分图完美匹配操作初始可行排课方案;然后,利用离散型荧火虫优化算法在可行方案中寻找最优排课方案;最后,通过Matlab仿真实验验证其可行性与有效性.

关键词：智能排课离散型荧火虫算法二部图完美匹配

Inhibitory gamma-aminobutyric acidergic neurons in the anterior cingulate cortex participate in the comorbidity of pain and emotion

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Neural Regeneration Research 2025年第10期20卷 2838-2854页

作者： Lu Guan Mengting Qiu Na Li Zhengxiang zhou Ru Ye Liyan Zhong Yashuang Xu Junhui Ren Yi Liang Xiaomei Shao Jianqiao fang Junfan fang Junying Du Department of Neurobiology and Acupuncture Research Third School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhouZhejiang ProvinceChina Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases Third School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhouZhejiang ProvinceChina Fuchun Community Health Service Center of Fuyang District HangzhouZhejiang ProvinceChina

Pain is often comorbid with emotional disorders such as anxiety and *** of the anterior cingulate cortex has been implicated in pain and pain-related negative emotions that arise from impairments in inhibitory gamma-aminobutyric acid *** review primarily aims to outline the main circuitry(including the input and output connectivity)of the anterior cingulate cortex and classification and functions of different gamma-aminobutyric acidergic neurons;it also describes the neurotransmitters/neuromodulators affecting these neurons,their intercommunication with other neurons,and their importance in mental comorbidities associated with chronic pain *** understanding on their role in pain-related mental comorbidities may facilitate the development of more effective treatments for these ***,the mechanisms that regulate gamma-aminobutyric acidergic systems remain *** is also unclear as to whether the mechanisms are presynaptic or *** exploration of the complexities of this system may reveal new pathways for research and drug development.

关键词： anterior cingulate cortex anxiety chronic pain circuit communication comorbidity depression gamma-aminobutyric acidergic neurons parvalbumin neurons synaptic transmission