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陶瓷球高效研磨技术的研究

金刚石与磨料磨具工程 2008年第4期28卷 52-56页

作者：吕冰海袁巨龙戴勇湖南大学国家高效磨削工程技术研究中心长沙410082

为提高陶瓷球研磨过程中的加工效率,本文提出了一种采用固着金刚石磨料的高效研磨技术。采用4～8μm粒径的金刚石微粉作为磨料,以光固化树脂作为结合剂,在300～500 nm波长紫外线照射下,使光固化树脂快速固化,制作固着磨料研磨盘(金刚石... 详细信息

为提高陶瓷球研磨过程中的加工效率,本文提出了一种采用固着金刚石磨料的高效研磨技术。采用4～8μm粒径的金刚石微粉作为磨料,以光固化树脂作为结合剂,在300～500 nm波长紫外线照射下,使光固化树脂快速固化,制作固着磨料研磨盘(金刚石浓度100%),以φ5 mm氮化硅陶瓷球为加工对象,在自行设计的实验台上进行了加工实验。实验结果表明,在保证表面质量的前提下(R_a～40 nm),材料去除率可达100μm/h,其研磨效率约为相同加工条件下传统游离磨料加工的20倍。对加工后陶瓷球表面的观察发现,氮化硅陶瓷球材料主要是以二体磨损的形式去除的。

关键词：陶瓷球金刚石磨料光固化树脂材料去除率

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非晶态合金薄膜铜衬底超精密抛光的实验研究

金刚石与磨料磨具工程 2011年第1期31卷 58-61页

作者：朱从容吕冰海邓乾发任尹飞浙江海洋学院机电工程学院浙江舟山316004 湖南大学国家高效磨削工程技术研究中心长沙410082 浙江工业大学特种装备制造与先进加工技术教育部重点实验室杭州310014 舟山市电力修造厂浙江舟山316000

本文采用聚氨酯抛光盘和绒布抛光垫对铜衬底进行超精密抛光工艺研究,对铜衬底的表面粗糙度、材料去除率以及铜衬底表面组织结构变化过程进行了研究,并讨论了铜衬底在超精密抛光时,不同抛光条件对其表面粗糙度和材料去除率的影响,以及抛... 详细信息

本文采用聚氨酯抛光盘和绒布抛光垫对铜衬底进行超精密抛光工艺研究,对铜衬底的表面粗糙度、材料去除率以及铜衬底表面组织结构变化过程进行了研究,并讨论了铜衬底在超精密抛光时,不同抛光条件对其表面粗糙度和材料去除率的影响,以及抛光压力对铜衬底的表面形成过程的影响。结果表明,采用聚氨酯抛光盘和绒布抛光垫可以消除划痕,抛光后的铜衬底表面粗糙度可达Ra6 nm。

关键词：合金薄膜铜衬底超精抛光表面形成过程

Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di Zhang Pengfei lv Wei Qin Xin He Yuanhua He Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

Blood diagnostic and prognostic biomarkers in amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第9期20卷 2556-2570页

作者： Yongting lv Hongfu Li Department of Neurology Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina Department of Medical Genetics and Center for Rare disease Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina Nanhu Brain-Computer Interface Institute HangzhouZhejiang Province

Amyotrophic lateral sclerosis is a devastating neurodegenerative disease for which the current treatment approaches remain severely *** principal pathological alterations of the disease include the selective degeneration of motor neurons in the brain,brainstem,and spinal cord,as well as abnormal protein deposition in the cytoplasm of neurons and glial *** biological markers under extensive scrutiny are predominantly located in the cerebrospinal fluid,blood,and even *** these biomarke rs,neurofilament proteins and glial fibrillary acidic protein most accurately reflect the pathologic changes in the central nervous system,while creatinine and creatine kinase mainly indicate pathological alterations in the peripheral nerves and *** light chain levels serve as an indicator of neuronal axonal injury that remain stable throughout disease progression and are a promising diagnostic and prognostic biomarker with high specificity and ***,there are challenges in using neurofilament light chain to diffe rentiate amyotrophic lateral sclerosis from other central nervous system diseases with axonal *** fibrillary acidic protein predominantly reflects the degree of neuronal demyelination and is linked to non-motor symptoms of amyotrophic lateral sclerosis such as cognitive impairment,oxygen saturation,and the glomerular filtration *** DNA-binding protein 43,a pathological protein associated with amyotrophic lateral sclerosis,is emerging as a promising biomarker,particularly with advancements in exosome-related *** is currently lacking for the value of creatinine and creatine kinase as diagnostic markers;however,they show potential in predicting disease *** the vigorous progress made in the identification of amyotrophic lateral sclerosis biomarkers in recent years,the quest for definitive diagnostic and prognostic biomarke rs remains a formidable *** review summarizes the lat

关键词： amyotrophic lateral sclerosis biomarker blood biomarkers diagnosis glial fibrillary acidic protein neurofilament light chain prognosis TAR DNA-binding protein 43

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陶瓷球双自转盘研磨方式下研磨均匀性的研究

金刚石与磨料磨具工程 2006年第4期26卷 43-47页

作者：陶宝春王志伟吕冰海黄建平何雪华袁巨龙浙江工业大学精密工程研究中心杭州310014 哈尔滨工业大学机电工程学院哈尔滨150001

对陶瓷球在双自转研磨盘研磨方式下的研磨均匀性进行仿真分析,表明研磨均匀性不仅取决于自旋角θ变化范围,而且取决于θ角的变化过程和球的自转角速度ωb的变化。对研磨均匀性来说,转速比函数幅值影响较大,相位的影响是很小,可以忽略。... 详细信息

对陶瓷球在双自转研磨盘研磨方式下的研磨均匀性进行仿真分析,表明研磨均匀性不仅取决于自旋角θ变化范围,而且取决于θ角的变化过程和球的自转角速度ωb的变化。对研磨均匀性来说,转速比函数幅值影响较大,相位的影响是很小,可以忽略。当内外下盘转速之比从0到2倍的进行连续周期变化时,可以得到较好的研磨均匀性,变化过程任意。

关键词：陶瓷球双自转研磨盘研磨方式转速比函数研磨均匀性

具身理论视角下高职学生工匠精神培养路径研究

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工业技术与职业教育 2024年第2期22卷 82-85页

作者：王洁吕冰海王志强杭州职业技术学院浙江杭州310018 浙江工业大学浙江杭州310014

工匠精神的培养助力国家振兴,作为教育场域中职业精神养成主阵地的高等职业教育义不容辞。教育工作者从多角度切入,研究和实践成果颇丰,但培养现状中也呈现出一定程度的“离身化”“狭义情境化”以及“强制性及形式化”等身心分离问题... 详细信息

工匠精神的培养助力国家振兴,作为教育场域中职业精神养成主阵地的高等职业教育义不容辞。教育工作者从多角度切入,研究和实践成果颇丰,但培养现状中也呈现出一定程度的“离身化”“狭义情境化”以及“强制性及形式化”等身心分离问题。剖析高职学生工匠精神培养中身心分离的现象及其根源,基于具身理论,从认知的具身性、情境性和交互性角度,探索了高职学生工匠精神的培养路径:从学校、专业与师生层面创设工匠精神情境,在日常教学、文化建设与社会实践以及竞赛中开展学生的具身实践,以学生为主体,经由模式、主体与场所保障师生与情境之间显著正向的有效交互,为高职院校提升工匠精神培养效果提供参考。

关键词：具身理论高职学生工匠精神学生主体

基于PSO算法的斜齿轮NURBS齿面重构研究

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高技术通讯 2023年第5期33卷 519-527页

作者：盛啸宇陈锋李威霖刘婷吕冰海赵文宏浙江工业大学机械工程学院杭州310023 浙江方圆检测集团股份有限公司、浙江省市场监管新能源汽车驱动系统重点实验室杭州310018

斜齿轮被广泛应用于高速重载的传动系统中,需要通过齿轮接触分析(TCA)以及齿轮承载接触分析(LTCA)进行强度校核。针对传统的齿轮接触分析所采用的有限元几何模型精度差的问题,提出了一种四阶斜齿轮齿面非均匀有理B样条(NURBS)拟合方法,... 详细信息

斜齿轮被广泛应用于高速重载的传动系统中,需要通过齿轮接触分析(TCA)以及齿轮承载接触分析(LTCA)进行强度校核。针对传统的齿轮接触分析所采用的有限元几何模型精度差的问题,提出了一种四阶斜齿轮齿面非均匀有理B样条(NURBS)拟合方法,并对齿轮渐开线曲面控制点权重进行粒子群优化(PSO)。通过参数化方程生成斜齿轮齿面型值点以进行节点矢量以及齿面控制点的计算,并利用粒子群优化算法,将拟合点到理论曲面的法向投影距离的最大差值作为拟合误差,对构成齿轮的渐开线曲面控制点权重进行调整,实现更为精确的斜齿轮齿面重构拟合。在10×6的网格控制点下,所生成的斜齿轮NURBS渐开线齿面拟合误差为2.059μm,优化后可以达到1.657μm,满足齿廓总偏差2级精度要求,可以为齿轮接触分析以及齿轮承载接触分析提供精确的几何模型。

关键词：非均匀有理B样条(NURBS) 斜齿轮齿面重构法向投影距离粒子群优化(PSO)

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电动汽车用减速器传动效率分析与实验研究

高技术通讯 2023年第2期33卷 221-230页

作者：陈锋李威霖翁文祥何胤达吕冰海杨庆华浙江工业大学机械工程学院杭州310013 浙江方圆检测集团股份有限公司浙江省市场监管新能源汽车驱动系统重点实验室杭州310018 浙江理工大学机械与自动控制学院杭州310018

传动效率是衡量电动汽车用减速器性能的重要指标,对其进行精确的仿真分析和实验研究能为产品设计和优化提供有效支撑。在分析传动效率损失因素的基础上,考虑齿轮啮合损失、轴承损失、搅油与风阻损失和油封损失,建立了传动效率计算模型,... 详细信息

传动效率是衡量电动汽车用减速器性能的重要指标,对其进行精确的仿真分析和实验研究能为产品设计和优化提供有效支撑。在分析传动效率损失因素的基础上,考虑齿轮啮合损失、轴承损失、搅油与风阻损失和油封损失,建立了传动效率计算模型,并对一种电动汽车用单挡二级减速器的传动效率进行仿真分析。搭建了高速三轴实验台,开展了传动效率实验研究,分析了不同转速和扭矩对传动效率的影响。仿真和实验结果表明,随着输入扭矩增加,传动效率先上升后趋于平稳;随着输入转速增加,传动效率下降;低扭、高速工况下,搅油与风阻损失占比最大;高扭、低速工况下,齿轮啮合损失占比最大。将所建立模型、ISO/TR 14179-1模型、ISO/TR 14179-2模型的仿真结果与实验实测结果进行比较分析,所建模型的仿真结果与实验实测结果的综合传动效率误差为0.03%,优于ISO/TR 14179-1(0.63%)和ISO/TR 14179-2模型(0.86%)。

关键词：电动汽车减速器传动效率功率损失效率实验

The pivotal role of microglia in injury and the prognosis of subarachnoid hemorrhage

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Neural Regeneration Research 2025年第7期20卷 1829-1848页

作者： Wenjing Ning Shi lv Qian Wang Yuzhen Xu Department of Rehabilitation The Second Affiliated Hospital of Shandong First Medical UniversityTaianShandong ProvinceChina Department of Central Laboratory The Affiliated Taian City Central Hospital of Qingdao UniversityTaianShandong ProvinceChina

Subarachnoid hemorrhage leads to a series of pathological changes,including vascular spasm,cellular apoptosis,blood–brain barrier damage,cerebral edema,and white matter ***,which are the key immune cells in the central nervous system,maintain homeostasis in the neural environment,support neurons,mediate apoptosis,participate in immune regulation,and have neuroprotective *** evidence has shown that microglia play a pivotal role in the pathogenesis of subarachnoid hemorrhage and affect the process of injury and the prognosis of subarachnoid ***,microglia play certain neuroprotective roles in the recovery phase of subarachnoid *** approaches aimed at modulating microglia function are believed to attenuate subarachnoid hemorrhage *** provides new targets and ideas for the treatment of subarachnoid ***,an in-depth and comprehensive summary of the role of microglia after subarachnoid hemorrhage is still *** review describes the activation of microglia after subarachnoid hemorrhage and their roles in the pathological processes of vasospasm,neuroinflammation,neuronal apoptosis,blood–brain barrier disruption,cerebral edema,and cerebral white matter *** also discusses the neuroprotective roles of microglia during recovery from subarachnoid hemorrhage and therapeutic advances aimed at modulating microglial function after subarachnoid ***,microglia in subarachnoid hemorrhage are targeted with TLR inhibitors,nuclear factor-κB and STAT3 pathway inhibitors,glycine/tyrosine kinases,NLRP3 signaling pathway inhibitors,Gasdermin D inhibitors,vincristine receptorαreceptor agonists,ferroptosis inhibitors,genetic modification techniques,stem cell therapies,and traditional Chinese ***,most of these are still being evaluated at the laboratory *** clinical studies and data on subarachnoid hemorrhage are required to improve the treatment of subarachnoid hemor

关键词： apoptosis blood–brain barrier brain edema microglia neuroinflammation neuron neuroprotection subarachnoid hemorrhage vasoconstriction white matter injury