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Droplet 2024年第3期3卷 49-56页

作者： SungGyu Chun zhengyu yang Jie Feng Department of Mechanical Science and Engineering University of Illinois Urbana-ChampaignUrbanaIllinoisUSA Materials Research Laboratory University of Illinois Urbana-ChampaignUrbanaIllinoisUSA

Thin-film deposition of fluids is ubiquitous in a wide range of engineering and biological applications,such as surface coating,polymer processing,and biomedical device *** the thin viscous film deposition in Newtonian fluids has been extensively investigated,the deposition dynamics in frequently encountered non-Newtonian com-plex fluids remain elusive,with respect to predictive scaling laws for the film ***,we investigate the deposition of thin films of shear-thinning viscoelastic fluids by the motion of a long bubble translating in a circular capillary *** the weakly elastic regime with a shear-thinning viscosity,we provide a quantitative measurement of the film thickness with systematic *** further harness the recently developed hydrodynamic lubrication theory to quantitatively rationalize our experimental observations considering the effective capillary number Cae and the effective Weissenberg number Wie,which describe the shear-thinning and the vis-coelastic effects on the film formation,*** obtained scaling law agrees reasonably well with the experimentally measured film thickness for all test *** work may potentially advance the fundamental understanding of the thin-film deposi-tion in a confined geometry and provide valuable engineering guidance for processes that incorporate thin-film flows and non-Newtonian fluids.

关键词： film weakly bubble

Long-lived yet bare bubbles in ultrasound

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Droplet 2024年第2期3卷 1-2页

作者： Jie Feng zhengyu yang Department of Mechanical Science and Engineering University of Illinois at Urbana–ChampaignUrbanaIllinoisUSA Materials Research Laboratory University of Illinois at Urbana–ChampaignUrbanaIllinoisUSA

Bubbles,often seen as metaphors for transience due to their ephemeral nature,have fascinated artists,engineers,and scientists for *** centuries of research,new and often surprising bubble physics and applications continue to *** particular,bubble-oriented fluid dynamics has been shown to play an important role in various disciplines such as chemistry,colloidal science,catalysis,electrolysis,medicine,biology,geophysics,and many others.1,2 There has been a strong motivation for researchers to investigate and manipulate the lifetime of bubbles,which could help address important questions related to chemical engineering,food/cosmetics industry,and even *** instance,the lifetime of bubbles is linked to the stabilization of foams and the size of bubblebursting *** this end,as the recent discovery of Xiaoliang Ji and coworkers reveals,bubbles suspended in ultrasound could show extraordinary stability without any chemical stabilizers.3 With the bubble lifetime effectively prolonged by approximately two orders of magnitude,their work proposes a new method to produce a longlived bubble.

关键词： bubble lifetime stabilization

基于多维特征的电网海量日线损数据异常识别研究

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电测与仪表 2024年第9期61卷 85-91页

作者：杨铮宇云南电网有限责任公司昆明650000

鉴于现有线损数据异常识别方法无法判断异常线损原因,且查全率低等问题,提出了基于多维特征的电网海量日线损数据异常识别方法。融合各类电力运行数据,组建多维特征日线损数据异常溯源模型,使用皮尔逊相关系数计算不同线路间变压器与电... 详细信息

鉴于现有线损数据异常识别方法无法判断异常线损原因,且查全率低等问题,提出了基于多维特征的电网海量日线损数据异常识别方法。融合各类电力运行数据,组建多维特征日线损数据异常溯源模型,使用皮尔逊相关系数计算不同线路间变压器与电压的关联性,明确线损异常原因;归一化处理日线损数据,引入时间离散度理念评估线损异常程度,利用神经网络学习获得负荷变化下线损数据异常计算模型,输入不同节点负荷值完成日线损数据异常识别操作。仿真实验结果表明,提出方法可以判断异常线损原因,并且异常识别查全率高达94%,提升了电网海量日线损数据异常识别准确性,解决了线损数据异常计算的偏差问题。

关键词：多维特征线损数据异常识别 BP神经网络实时线损

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论数字藏品持有人展览行为的立法评价

知识产权 2024年第2期 87-106页

作者：杨正宇厦门大学知识产权研究院厦门大学一带一路研究院

数字藏品持有人能否展览相应作品的论证,面临展览权与“展示权”内容差异大、数字藏品难谓作品原件、展览权与信息网络传播权冲突等诸多困境。从立法进程考察,我国不仅赋予展览权独立地位,还将载体转移引发的限制权利条款设计为分割权... 详细信息

数字藏品持有人能否展览相应作品的论证,面临展览权与“展示权”内容差异大、数字藏品难谓作品原件、展览权与信息网络传播权冲突等诸多困境。从立法进程考察,我国不仅赋予展览权独立地位,还将载体转移引发的限制权利条款设计为分割权利条款。因此,对数字藏品持有人展览行为正当性的解读应在纠正展览权制度移植偏差的基础上,通过修改《著作权法》第20条第1款展览权“专门条款”,依据默示许可理论拟制免责事由条款,同时以“销售目的”限制线上展示行为过度豁免,从而实现限制权利的逻辑归位,完成因应数字交易特点的修正。

关键词：数字藏品展览权限制条款

Revisiting Educational Issues in the Age of Generative Artificial Intelligence

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Journal of Contemporary Educational Research 2024年第1期8卷 159-164页

作者： zhengyu yang Faculty of Mathematics Hangzhou Normal UniversityHangzhou 311121Zhejiang ProvinceChina

The emergence of generative artificial intelligence(AI)has had a huge impact on all areas of life,including the field of *** can assist teachers in cultivating talents and promoting personalized learning and teaching,but it also prevents individuals from thinking independently and *** the era of generative AI,the rapid development of technology and its significant impact on the field of education are *** are many educational issues related to it,such as teaching methods,student training goals,teaching philosophy and purposes,and other educational issues,that require re-conceptualization and review.

关键词： Generative artificial intelligence Educational philosophy Training objectives Creative thinking Personalized learning

右美托咪定对小鼠脑出血后氧化应激脑损伤及NOX4表达的影响

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重庆医学 2024年第14期53卷 2099-2103,2109页

作者：杨正宇毛庆祥陆军军医大学大坪医院麻醉科重庆400042

目的探讨右美托咪定对小鼠脑出血后氧化应激脑损伤及NADPH氧化酶(NOX)4表达的影响。方法小鼠经腹腔注射右美托咪定30 min后制备脑出血模型,检测小鼠神经运动功能、脑含水量、NOX4 mRNA和NOX4蛋白表达水平及氧化应激水平。结果与对照组比... 详细信息

目的探讨右美托咪定对小鼠脑出血后氧化应激脑损伤及NADPH氧化酶(NOX)4表达的影响。方法小鼠经腹腔注射右美托咪定30 min后制备脑出血模型,检测小鼠神经运动功能、脑含水量、NOX4 mRNA和NOX4蛋白表达水平及氧化应激水平。结果与对照组比较,脑出血组小鼠神经运动功能评分提升(P<0.05),脑水含量增加(P<0.05),NOX4 mRNA和NOX4蛋白表达水平明显增加(P<0.05),氧化应激水平升高;而右美托咪定组小鼠神经运动功能评分明显下降(P<0.05),脑含水量明显减少(P<0.05),NOX4 mRNA和NOX4蛋白表达水平明显减少(P<0.05),氧化应激水平降低。结论右美托咪定可以抑制脑出血后NOX4表达,减轻小鼠氧化应激脑损伤。

关键词：右美托咪定脑出血氧化应激 NOX4

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右美托咪定对脑出血小鼠肥大细胞激活及神经功能损伤的影响

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重庆医学 2024年第2期53卷 171-175页

作者：杨正宇毛庆祥陆军军医大学大坪医院麻醉科重庆400042

目的探讨右美托咪定对小鼠脑出血后神经功能损伤及肥大细胞激活的影响。方法小鼠脑出血前30 min经腹腔注射右美托咪定,脑出血模型制备完成后检测小鼠神经功能、脑含水量、血肿周围肥大细胞数量及类胰蛋白酶、白细胞介素-1β(IL-1β)、... 详细信息

目的探讨右美托咪定对小鼠脑出血后神经功能损伤及肥大细胞激活的影响。方法小鼠脑出血前30 min经腹腔注射右美托咪定,脑出血模型制备完成后检测小鼠神经功能、脑含水量、血肿周围肥大细胞数量及类胰蛋白酶、白细胞介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)表达量。结果与对照组比较,脑出血组的小鼠神经系统功能评分明显提升(P<0.05),脑含水量明显增加(P<0.05),肥大细胞数量明显增加(P<0.05),类胰蛋白酶、IL-1β和TNF-α表达量明显增加(P<0.05);而右美托咪定组的小鼠神经功能评分明显下降(P<0.05),脑含水量明显减少(P<0.05),肥大细胞数量明显减少(P<0.05),类胰蛋白酶、IL-1β和TNF-α表达量明显减少(P<0.05)。结论右美托咪定可以抑制脑出血后血肿周边肥大细胞的激活,减轻小鼠神经功能损害。

关键词：右美托咪定脑出血肥大细胞神经功能

Enhancement of fine particle filtration with efficient humidification

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Chinese Journal of Chemical Engineering 2016年第4期24卷 453-459页

作者： Yumei Zhang Weidong Zhang zhengyu yang Junteng Liu Fushen yang Ning Li Le Du The State Key Laboratory of Chemical Resource Engineering Beijing Key Laboratory of Membrane Science and Technology Beijing University of Chemical Technology Beijing 100029 China

Filtration is one of the most effective methods to remove suspended fine particles from air. In filtration processes,pressure drop of compact dust cake causes problems in efficiency and economy, which has received increasing attention and still remains challenging. In this study, we developed a novel technique to intensify the filtration of fine particles with efficient humidification. Two strategies for humidification, including ultrasonic atomization and steam humidification(controlling of ambient humidity), were employed and proved to be both effective. The regeneration frequency of the filter could be reduced by 55% with ultrasonic atomization, while steam humidification could lead to a 78% reduction in regeneration frequency. The effect of operating conditions on pressure drop and the mass loading during filtration were investigated. The dust cake showed a loose and porous structure with an optimized droplet-to-particle ratio. With the ratio of 1.53 and 0.0282, the maximum mass loading was 552 g·m-2upon the ultrasonic atomization and 720 g·m-2upon the steam humidification. The results show that humidification could slow down the increase of pressure drop during filtration and improve the efficiency of process.

关键词： FiltrationHumidificationLiquid bridgePressure dropDust cake structure

针刺脾俞对衰老大鼠腰骨骼肌萎缩Akt/NF-κB信号通路的影响

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中国骨质疏松杂志 2024年第4期30卷 482-487页

作者：陈艺敏杨正瑜陈群金京郑其开王和鸣陈少清福建中医药大学附属康复医院福建福州350003 福建中医药大学福建福州350122 福建省康复技术重点实验室福建福州350122

目的观察针刺脾俞对衰老大鼠Akt/NF-κB信号通路的影响,探讨针刺脾俞改善骨骼肌萎缩以防治腰痛的可能机制。方法将32只雄性SD大鼠随机分为空白组、模型组、针刺组、阳性药物组,每组8只。空白组大鼠每日项背部皮下注射0.9%生理盐水[300 m... 详细信息

目的观察针刺脾俞对衰老大鼠Akt/NF-κB信号通路的影响,探讨针刺脾俞改善骨骼肌萎缩以防治腰痛的可能机制。方法将32只雄性SD大鼠随机分为空白组、模型组、针刺组、阳性药物组,每组8只。空白组大鼠每日项背部皮下注射0.9%生理盐水[300 mg/(kg·d)],其余3组大鼠每日项背部皮下注射等量的D-半乳糖,连续12周。第9周开始,针刺组取双侧脾俞进行针刺,阳性药物组采用混合氨基酸灌胃,连续4周。用HE染色对骨骼肌组织形态进行观察,TdT-mediated dUTP nick-end labeling(TUNEL)法检测骨骼肌细胞凋亡情况,ELISA检测IL-1β、IL-6T、NF-α释放量,Western Blot检测Akt、p-Akt、NF-κB、p-NF-κB的蛋白表达水平。结果与空白组比较,模型组骨骼肌细胞间隙变宽,部分肌细胞圆形化,肌细胞凋亡数量增多,炎性因子IL-1β、IL-6T、NF-α水平显著上升(P<0.001、P<0.01和P<0.05),p-Akt、NF-κB、p-NF-κB蛋白表达水平升高(P<0.001);与模型组比较,针刺组和阳性药物组,肌间隙窄,肌细胞排列更紧密,凋亡数量减少,炎性因子IL-1β、IL-6T、NF-α水平下降(P<0.01、P<0.01和P<0.05),p-Akt、NF-κB、p-NF-κB蛋白表达水平下调(P<0.001)。结论针刺脾俞可改善D-半乳糖诱导的骨骼肌衰老,并通过抑制Akt/NF-κB信号通路,降低炎症反应,减少骨骼肌细胞凋亡,这可能是针刺脾俞治疗腰痛的潜在作用机制之一。

关键词：衰老性骨骼肌萎缩针刺脾俞 Akt/NF-κB信号通路

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云边协同与区块链融合架构研究与设计

科技导报 2024年第9期42卷 39-50页

作者：李申章杨铮宇李力马鑫堃吴玮李良静张逸彬周智勋云南电网有限责任公司信息中心昆明650011 云南电网有限责任公司昆明650011 云南云电同方科技有限公司昆明650011 昆明理工大学信息工程与自动化学院昆明650500 云南电网有限责任公司昆明供电局昆明650011

从理论、关键技术,具体架构设计等层面研究了云边协同与区块链的融合应用。云边协同与区块链融合架构研究与设计包括了总体融合应用研究与设计、云边协同与区块链交互应用设计、基于云边协同的区块链管理功能设计、基于云边协同的智能... 详细信息

从理论、关键技术,具体架构设计等层面研究了云边协同与区块链的融合应用。云边协同与区块链融合架构研究与设计包括了总体融合应用研究与设计、云边协同与区块链交互应用设计、基于云边协同的区块链管理功能设计、基于云边协同的智能合约管理设计、基于云边协同的区块链数据管理设计。通过研究云边协同与区块链融合的可行性和优势,设计出两者互相融合的通用性架构,该架构可以应用于智慧用电、智能网联汽车、智慧管网、工业物联网等应用场景。

关键词：云边协同区块链智能合约 Docker容器:架构设计