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Flow Separation and Vortex Dynamics in Waves Propagating over A Submerged Quartercircular Breakwater

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China Ocean Engineering 2018年第5期32卷 514-523页

作者： JIANG Xue-lian YANG Tian zou qing-ping GU Han-bin Tianjin Key Laboratory of Soft Soil Characteristics & Engineering Environment Tianjin Chengjian University State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University The Lyell Centre for Earth and Marine Science and Technology Institute for Infrastructure and EnvironmentHeriot-Watt University School of Naval Architecture &Mechanical-Electrical Engineering Zhejiang Ocean University

The interactions of cnoidal waves with a submerged quartercircular breakwater are investigated by a ReynoldsAveraged Navier–Stokes(RANS) flow solver with a Volume of Fluid(VOF) surface capturing scheme(RANSVOF) model. The vertical variation of the instantaneous velocity indicates that flow separation occurs at the boundary layer near the breakwater. The temporal evolution of the velocity and vorticity fields demonstrates vortex generation and shedding around the submerged quartercircular breakwater due to the flow separation. An empirical relationship between the vortex intensity and a few hydrodynamic parameters is proposed based on parametric analysis. In addition, the instantaneous and time-averaged vorticity fields reveal a pair of vortices of opposite signs at the breakwater which are expected to have significant effect on sediment entrainment, suspension, and transportation,therefore, scour on the leeside of the breakwater.

关键词： submerged quartercircular breakwater cnoidal wave flow separation vortex dynamics scour

Higher Harmonics Induced by Waves Propagating over A Submerged Obstacle in the Presence of Uniform Current

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China Ocean Engineering 2014年第6期28卷 725-738页

作者：宁德志林红星滕斌邹青萍 State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Department of Civil and Environmental Engineering University of Maine

To investigate higher harmonics induced by a submerged obstacle in the presence of uniform current, a 2D fully nonlinear numerical wave flume（NWF） is developed by use of a time-domain higher-order boundary element method（HOBEM） based on potential flow theory. A four-point method is developed to decompose higher bound and free harmonic waves propagating upstream and downstream around the obstacle. The model predictions are in good agreement with the experimental data for free harmonics induced by a submerged horizontal cylinder in the absence of currents. This serves as a benchmark to reveal the current effects on higher harmonic waves. The peak value of non-dimensional second free harmonic amplitude is shifted upstream for the opposing current relative to that for zero current with the variation of current-free incident wave amplitude, and it is vice versa for the following current. The second-order analysis shows a resonant behavior which is related to the ratio of the cylinder diameter to the second bound mode wavelength over the cylinder. The second-order resonant position slightly downshifted for the opposing current and upshifted for the following current.

关键词： higher harmonics wave-current interaction HOBEM free mode

Syntheses of Glycosides Containing Imidazole and Triazine

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Syntheses of Glycosides Containing Imidazole and Triazine

中国化学会第四届有机化学学术会议

作者： ZENG, Run-Sheng WU, Gui-ping WEI, Hui-qing zou, Jian-ping (School of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006)

＜正＞In this paper, 4-benzyloxy-ω-methylsulfiny1-acetophenone was prepared by the reaction of ethyl 4-benzyloxy-benzoate and dimethyl sulfoxide in the presence of sodium hydride, followed by Pummerer reaction with concentrated hydrochloric acide to afford ω-hydroxy-ω-thiomethy1-（4-benzyloxy）-acetophenone, which reacted with semicarbazide hydrochloride and urea to give l,2,4-triazine-3-one and imidazolidine-2,4-dione compounds, respectively. The glycosides of two heterocycle compounds were synthesized by phase-transfer catalysis method under the moderate conditions. All the compounds obtained were confirmed by IR, 1H NMR, 13C NMR and MS spectra.

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多环芳烃有机废气的催化燃烧处理技术进展

现代化工 2020年第1期40卷 42-45页

作者：邹庆平陈秀鹃沈树宝陈英文南京工业大学生物与制药工程学院南京工业大学材料化学工程国家重点实验室

综述了多环芳烃有机废气的催化燃烧处理技术,重点介绍了贵金属催化剂和非贵金属催化剂。从催化剂的催化效果出发介绍了催化反应的原理和催化剂的改性方法等,分析了贵金属催化剂和非贵金属催化剂的性能。催化燃烧法由于效率高、广谱性、... 详细信息

综述了多环芳烃有机废气的催化燃烧处理技术,重点介绍了贵金属催化剂和非贵金属催化剂。从催化剂的催化效果出发介绍了催化反应的原理和催化剂的改性方法等,分析了贵金属催化剂和非贵金属催化剂的性能。催化燃烧法由于效率高、广谱性、经济性等成为PAHs最具应用前景的处理技术。

关键词：多环芳烃催化燃烧催化剂催化剂载体

Exploring the interaction between the gut microbiota and cyclic adenosine monophosphate-protein kinase A signaling pathway:a potential therapeutic approach for neurodegenerative diseases

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Neural Regeneration Research 2025年第11期20卷 3095-3112页

作者： Fengcheng Deng Dan Yang Lingxi qing Yifei Chen Jilian zou Meiling Jia Qian Wang Runda Jiang Lihua Huang College of Pharmacy Chengdu University of Traditional Chinese MedicineChengduSichuan ProvinceChina State Key Laboratory of Southwestern Chinese Medicine Resources Chengdu University of Traditional Chinese MedicineChengduSichuan ProvinceChina

The interaction between the gut microbiota and cyclic adenosine monophosphate(cAMP)-protein kinase A(PKA)signaling pathway in the host's central nervous system plays a crucial role in neurological diseases and enhances communication along the gut–brain *** gut microbiota influences the cAMP-PKA signaling pathway through its metabolites,which activates the vagus nerve and modulates the immune and neuroendocrine ***,alterations in the cAMP-PKA signaling pathway can affect the composition of the gut microbiota,creating a dynamic network of microbial-host *** reciprocal regulation affects neurodevelopment,neurotransmitter control,and behavioral traits,thus playing a role in the modulation of neurological *** coordinated activity of the gut microbiota and the cAMP-PKA signaling pathway regulates processes such as amyloid-β protein aggregation,mitochondrial dysfunction,abnormal energy metabolism,microglial activation,oxidative stress,and neurotransmitter release,which collectively influence the onset and progression of neurological *** study explores the complex interplay between the gut microbiota and cAMP-PKA signaling pathway,along with its implications for potential therapeutic interventions in neurological *** pharmacological research has shown that restoring the balance between gut flora and cAMP-PKA signaling pathway may improve outcomes in neurodegenerative diseases and emotional *** can be achieved through various methods such as dietary modifications,probiotic supplements,Chinese herbal extracts,combinations of Chinese herbs,and innovative dosage *** findings suggest that regulating the gut microbiota and cAMP-PKA signaling pathway may provide valuable evidence for developing novel therapeutic approaches for neurodegenerative diseases.

关键词： cyclic adenosine monophosphate emotional disorders gut microbiota neurodegenerative diseases neurological diseases protein kinase A reciprocal regulation signaling pathway strategy therapies

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基于ATmega16计件器的设计与实现

科技信息 2010年第33期 80-80,49页

作者：宋华宁邹清平河池学院物理与电子工程系广西宜州546300

本文设计了一种基于ATmega16单片机的对流水线产品产量进行计件的系统,介绍了系统的硬件电路和软件设计思想。该计件器以集成光电开关为传感器,能够实现准确的产品数量计算,可选加计件或减计件模式,超过设定值时能够及时进行声音报警及... 详细信息

本文设计了一种基于ATmega16单片机的对流水线产品产量进行计件的系统,介绍了系统的硬件电路和软件设计思想。该计件器以集成光电开关为传感器,能够实现准确的产品数量计算,可选加计件或减计件模式,超过设定值时能够及时进行声音报警及重新计数等功能。

关键词：计件器 ATmega16 光电开关

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风化软岩填料适用性控制参数探讨

山西建筑 2008年第25期34卷 25-26页

作者：朱锦富邹青平中铁上海设计院集团有限公司江西地方铁路开发公司

以千枚板岩为研究对象,通过对其矿物成分、崩解性、膨胀性与压缩性、软化性等试验分析,并结合软岩填料的强度与击实试验结果,初步得出千枚板岩填筑路基能满足路基沉降稳定的要求及能否作为路用填料主要受填料浸水软化后强度衰减因素控... 详细信息

以千枚板岩为研究对象,通过对其矿物成分、崩解性、膨胀性与压缩性、软化性等试验分析,并结合软岩填料的强度与击实试验结果,初步得出千枚板岩填筑路基能满足路基沉降稳定的要求及能否作为路用填料主要受填料浸水软化后强度衰减因素控制的结论。

关键词：软岩填料适用性控制参数

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甘蔗组织培养中染色体数目变异的初步研究

广西植物 1989年第4期9卷 327-330页

作者：秦新民梁倩华黄卓瑶覃卫平广西师范大学生物系

本文通过甘蔗桂糖11号组培腋芽苗与其原种的染色体数目的比较,研究了腋芽苗染色体数目的变化情况。发现腋芽苗82％的细胞的染色体数目仍在其原种染色体数目变异的高峰之内。

关键词：甘蔗组织培养染色体数变异

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民国报刊视野中的陈方恪研究

湖北科技学院学报 2025年第1期45卷 19-25页

作者：邹艳徐清南昌大学人文学院江西南昌330031

学界多以“才子”与“浪子”评判陈方恪,前者是指他古典诗词创作的才能,以及文献整理与鉴别的学识,后者是指其在年轻时生活上的放纵以及履历上的任伪职。民国报刊收藏了有关陈方恪的图片、诗作、序文等,这些史料有助于打破学界对陈方恪... 详细信息

学界多以“才子”与“浪子”评判陈方恪,前者是指他古典诗词创作的才能,以及文献整理与鉴别的学识,后者是指其在年轻时生活上的放纵以及履历上的任伪职。民国报刊收藏了有关陈方恪的图片、诗作、序文等,这些史料有助于打破学界对陈方恪评价的“定形”。陈方恪不仅追求雅致的风范而且还具有救亡图存的责任意识,并将其书写进文学创作中。而报刊文献中的《适屦集》序文和追和王国维之创作,展现了陈方恪反映本我、追求创新的文学创作理念。

关键词：民国报刊陈方恪《适屦集》