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WAVE2与细胞骨架的研究进展 被引量:3
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作者 张利军 魏蕾 《武汉大学学报(医学版)》 CAS 2005年第5期678-682,共5页
细胞骨架是细胞内由蛋白质成分组成的三维网架状结构,在细胞变形、细胞运动、细胞迁移等多种生命活动中的作用至关重要。近年来,WAVE2作为一种新的肌动蛋白调节蛋白,其参与细胞信号的转导,调节肌动蛋白的聚合及细胞骨架的重排,在片状伪... 细胞骨架是细胞内由蛋白质成分组成的三维网架状结构,在细胞变形、细胞运动、细胞迁移等多种生命活动中的作用至关重要。近年来,WAVE2作为一种新的肌动蛋白调节蛋白,其参与细胞信号的转导,调节肌动蛋白的聚合及细胞骨架的重排,在片状伪足的形成和细胞迁移中的作用备受人们关注,已在国际上形成一个新的研究热点。 展开更多
关键词 细胞骨架 wave2 细胞迁移
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WAVE2在消化道喉鳞状细胞癌组织中的表达及临床意义
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作者 要兆旭 《现代消化及介入诊疗》 2018年第A02期109-109,共1页
目的:探讨WAVE2在消化道喉鳞状细胞癌组织中的表达及临床意义。方法:选取55例喉鳞状细胞癌患者作为研究对象,采用免疫组织化学方法检测55例患者消化道中喉癌组织中WAVE2蛋白的表达;采用Westernblot检测WAVE2蛋白在喉癌组和癌旁黏膜组织... 目的:探讨WAVE2在消化道喉鳞状细胞癌组织中的表达及临床意义。方法:选取55例喉鳞状细胞癌患者作为研究对象,采用免疫组织化学方法检测55例患者消化道中喉癌组织中WAVE2蛋白的表达;采用Westernblot检测WAVE2蛋白在喉癌组和癌旁黏膜组织中的表达情况。结果:55例喉癌组织中有32例发现有WAVE2蛋白阳性表达,阳性表达率为58.2%;有23例喉癌组织中未见WAVE2蛋白表达,阴性表达率为41.8%。且喉癌组织中WAVE2蛋白表达显著高于癌旁黏膜组织(P<0.05)。WAVE2蛋白表达与临床分期、肿瘤大小和淋巴结转移等临床病理特征有显著相关性。结论:WAVE2在消化道喉鳞状细胞癌组织中高表达且与多种临床病理特征相关。 展开更多
关键词 wave2 喉鳞状细胞癌 基因表达 临床意义
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Rac1和WAVE2蛋白在高脂饮食C57BL/6J幼鼠肾小球中的表达及意义 被引量:1
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作者 甄永煜 艾浩 李晓明 《天津医药》 CAS 2016年第9期1081-1083,1187,共4页
目的探讨Rac1和WAVE2蛋白在高脂饮食诱导的C57BL/6J幼鼠肾小球中的表达及意义。方法 32只3周龄雄性C57BL/6J幼鼠随机分为正常饮食组和高脂饮食组,每组16只。分别给予标准饲料(脂肪含量10%)与高脂饲料(脂肪含量60%)喂养4周。HE染色和PAS... 目的探讨Rac1和WAVE2蛋白在高脂饮食诱导的C57BL/6J幼鼠肾小球中的表达及意义。方法 32只3周龄雄性C57BL/6J幼鼠随机分为正常饮食组和高脂饮食组,每组16只。分别给予标准饲料(脂肪含量10%)与高脂饲料(脂肪含量60%)喂养4周。HE染色和PAS染色观察小鼠肾脏的病理形态学改变;应用免疫组织化学技术及蛋白免疫印迹技术检测Rac1和WAVE2蛋白的表达。结果与正常饮食组相比,高脂饮食喂养的C57BL/6J幼鼠出现了肾小球系膜基质轻度增生以及渗出等病理改变。同时高脂饮食组小鼠肾小球Rac1和WAVE2蛋白的表达明显增强。结论 Rac1和WAVE2蛋白可能共同参与了高脂饮食诱导的C57BL/6J幼鼠肾小球的损伤。 展开更多
关键词 肾小球 rac1GTP结合蛋白质 Wiskott-Aldrich综合征蛋白质 免疫组织化学 印迹法 蛋白质 小鼠 近交C57BL 高脂饮食 wave2
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基于802.11ac Wave2标准的高校图书馆无线网络设计研究——以西安工程大学图书馆为例 被引量:6
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作者 王普雄 郑晓晶 王维君 《价值工程》 2019年第26期254-257,共4页
文章在分析无线网络设计原则以及802.11ac Wave2标准优势的基础上,以西安工程大学图书馆为例,根据西安工程大学图书馆区域功能布局和读者分布以及对无线网络的需求,具体对无线网络的架构、拓扑、部署场景、认证、SSID与信道规划、安全... 文章在分析无线网络设计原则以及802.11ac Wave2标准优势的基础上,以西安工程大学图书馆为例,根据西安工程大学图书馆区域功能布局和读者分布以及对无线网络的需求,具体对无线网络的架构、拓扑、部署场景、认证、SSID与信道规划、安全、运维等方面提出了设计方案,为智慧图书馆构建中的无线网络部署实施提供参考,为智慧校园建设中的全校无线网络覆盖提供一定的实践指导。 展开更多
关键词 无线网络 802.11ac wave2标准 网络架构 智慧图书馆
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Abelson interactor 1 splice isoform-L plays an anti-oncogenic role in colorectal carcinoma through interactions with WAVE2 and fulllength Abelson interactor 1
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作者 Kun Li Yi-Fan Peng +6 位作者 Jing-Zhu Guo Mei Li Yu Zhang Jing-Yi Chen Ting-Ru Lin Xin Yu Wei-Dong Yu 《World Journal of Gastroenterology》 SCIE CAS 2021年第15期1595-1615,共21页
BACKGROUND Expression of the full-length isoform of Abelson interactor 1(ABI1),ABI1-p65,is increased in colorectal carcinoma(CRC)and is thought to be involved in one or more steps leading to tumor progression or metas... BACKGROUND Expression of the full-length isoform of Abelson interactor 1(ABI1),ABI1-p65,is increased in colorectal carcinoma(CRC)and is thought to be involved in one or more steps leading to tumor progression or metastasis.The ABI1 splice isoform-L(ABI1-SiL)has conserved WAVE2-binding and SH3 domains,lacks the homeodomain homologous region,and is missing the majority of PxxP-and Pro-rich domains found in full-length ABI1-p65.Thus,ABI1-SiL domain structure suggests that the protein may regulate CRC cell morphology,adhesion,migration,and metastasis via interactions with the WAVE2 complex pathway.AIM To investigate the potential role and underlying mechanisms associated with ABI1-SiL-mediated regulation of CRC.METHODS ABI1-SiL mRNA expression in CC tissue and cell lines was measured using both qualitative reverse transcriptase-polymerase chain reaction(RT-PCR)and realtime quantitative RT-PCR.A stably ABI1-SiL overexpressing SW480 cell model was constructed using Lipofectamine 2000,and cells selected with G418.Image J software,CCK8,and transwell assays were used to investigate SW480 cell surface area,proliferation,migration,and invasion.Immunoprecipitation,Western blot,and co-localization assays were performed to explore intermolecular interactions between ABI1-SiL,WAVE2,and ABI1-p65 proteins.RESULTS ABI1-SiL was expressed in normal colon tissue and was significantly decreased in CRC cell lines and tissues.Overexpression of ABI1-SiL in SW480 cells significantly increased the cell surface area and inhibited the adhesive and migration properties of the cells,but did not alter their invasive capacity.Similar to ABI1-p65,ABI1-SiL still binds WAVE2,and the ABI1-p65 isoform in SW480 cells.Furthermore,co-localization assays confirmed these intermolecular interactions.CONCLUSION These results support a model in which ABI1-SiL plays an anti-oncogenic role by competitively binding to WAVE2 and directly interacting with phosphorylated and non-phosphorylated ABI1-p65,functioning as a dominant-negative form of ABI1-p65. 展开更多
关键词 Colon cancer Abelson interactor 1 isoform-L Cell adhesion Cell migration wave2
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肾透明细胞癌中Rac1和WAVE2的表达及其相关性
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作者 关有良 臧东钰 王丹 《中国老年学杂志》 CAS 北大核心 2017年第9期2121-2123,共3页
目的研究Rac1和WAVE2蛋白在肾透明细胞癌中的表达及其相关性。方法采用免疫组织化学SP法对肾透明细胞癌标本Rac1和WAVE2的表达进行检测。结果肾癌组Rac1和WAVE2表达阳性率明显高于癌旁组。且Rac1和WAVE2的表达水平与患者年龄、性别无明... 目的研究Rac1和WAVE2蛋白在肾透明细胞癌中的表达及其相关性。方法采用免疫组织化学SP法对肾透明细胞癌标本Rac1和WAVE2的表达进行检测。结果肾癌组Rac1和WAVE2表达阳性率明显高于癌旁组。且Rac1和WAVE2的表达水平与患者年龄、性别无明显关联,而与肿瘤转移有关。Rac1和WAVE2在肾癌中的表达呈正相关。结论肾癌中Rac1和WAVE2蛋白阳性表达率高于正常肾组织,并呈正相关性,可能在肾透明细胞癌的发生发展过程中起关键作用。 展开更多
关键词 肾透明细胞癌 RAC1 wave2
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基于802.11ac wave2协议的高校无线网络应用研究——以南宁学院为例
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作者 徐家丽 《无线互联科技》 2020年第19期25-27,70,共4页
WiFi对于用户具备廉价、易用的特点,是移动互联网中不可或缺且广受欢迎的重要技术,随着时代发展,人们对无线网络的需求越来越高,文章分析基于802.11ac wave2协议的5GHz WiFi的技术优势,结合南宁学院的实际情况,搭建5GHz WiFi网络架构并... WiFi对于用户具备廉价、易用的特点,是移动互联网中不可或缺且广受欢迎的重要技术,随着时代发展,人们对无线网络的需求越来越高,文章分析基于802.11ac wave2协议的5GHz WiFi的技术优势,结合南宁学院的实际情况,搭建5GHz WiFi网络架构并进行测试,研究802.11ac wave2协议在高校校园“互联网+”建设中的应用。 展开更多
关键词 802.11ac wave2 高校 无线网
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乳腺癌中Abi1和c-Abl及WAVE 2的表达及其相互关系 被引量:2
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作者 黄琰菁 于世英 +3 位作者 王江玲 黄念念 李健 冷彦 《中国组织化学与细胞化学杂志》 CAS CSCD 2010年第3期216-220,共5页
目的研究乳腺癌组织中Abi1、c-Abl和WAVE2蛋白的表达及其相互关系。方法应用免疫组化SP法检测66例乳腺癌组织和24例正常乳腺组织中Abi1、c-Abl和WAVE2蛋白的表达情况。结果 1.正常乳腺组织与乳腺癌组织相比,Abi1和WAVE2蛋白表达有显著... 目的研究乳腺癌组织中Abi1、c-Abl和WAVE2蛋白的表达及其相互关系。方法应用免疫组化SP法检测66例乳腺癌组织和24例正常乳腺组织中Abi1、c-Abl和WAVE2蛋白的表达情况。结果 1.正常乳腺组织与乳腺癌组织相比,Abi1和WAVE2蛋白表达有显著性差异(P<0.05),而c-Abl蛋白表达无显著性差异(P>0.05),但有定位的改变。2.Abi1强阳性率与乳腺癌的肿瘤大小、组织学分级、淋巴结转移及临床分期呈负相关性(P<0.05);与患者年龄无关(P>0.05)。c-Abl阳性率及WAVE2强阳性率均与乳腺癌的组织学分级、淋巴结转移及临床分期呈负相关性(P<0.05);与患者年龄及肿瘤大小无关(P>0.05)。3.Abi1蛋白表达与c-Abl和WAVE2蛋白表达呈正相关(P<0.05)。结论乳腺癌中Abi1低表达与预后不良有关。乳腺癌中Abi1蛋白表达的变化可影响c-Abl蛋白的定位和WAVE2蛋白的表达。推测Abi1在Abl/Abi1/WAVE2通路中具有至关重要的地位。 展开更多
关键词 乳腺肿瘤 Abi1 C-ABL wave2 免疫组化
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Study on Wave Characteristics from the South Atlantic Ocean to the Gulf of Guinea Based on Short-Term Numerical Simulation in Winter Season
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作者 XU Fu-min ZHENG Jin-hai +1 位作者 YA Han-zheng XING Tian 《China Ocean Engineering》 SCIE EI CSCD 2023年第2期312-322,共11页
Waves play a major role in the ocean phenomena in the Gulf of Guinea(GoG). In order to reveal the spatial-temporal distribution characteristics and the propagation mechanism of waves from the South Atlantic Ocean to t... Waves play a major role in the ocean phenomena in the Gulf of Guinea(GoG). In order to reveal the spatial-temporal distribution characteristics and the propagation mechanism of waves from the South Atlantic Ocean to the GoG, 4typical points located in mid-latitude of South Atlantic(14°30′W, 30°0′S), south of the GoG(10°30′W, 15°0′S), offshore of the GoG(0°0′, 0°0′) and near shore of the GoG(6°4′58.8″W, 4°3′36″S) are selected, and waves from Atlantic Ocean to GoG are simulated by using a two-layer-nesting wave numerical model SWAN(Simulating Waves Nearshore). The results show that the hybrid waves(waves hereafter) and the swells have strong relationship with local wind in Roaring Forties and at mid-latitude of South Atlantic Ocean, while there is no obvious correlation between waves and local winds in the GoG. Swells are generated in the South Atlantic Ocean and propagate into the GoG. 2D wave spectra at the four selected typical points are simulated. The spectral pattern and wave component structure indicate that the wave system in GoG is dominated by the S-SW swells generated from Roaring Forties and mid-latitude of South Atlantic, whether it is at maximum(2.2-2.8 m), medium(1.8-2.2 m) or minimum(1.2 m) significant wave height in the GoG during simulation period. 展开更多
关键词 Gulf of Guinea wave characteristics 2D wave spectra SWELL roaring forties
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Optical remote sensing image characteristics of large amplitude convex mode-2 internal solitary waves:an experimental study
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作者 Zhixin Li Meng Zhang +1 位作者 Keda Liang Jing Wang 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2023年第6期16-23,共8页
A series of experiments are designed to propose a new method to study the characteristics of convex mode-2internal solitary waves(ISWs)in optical remote sensing images using a laboratory-based optical remote sensing s... A series of experiments are designed to propose a new method to study the characteristics of convex mode-2internal solitary waves(ISWs)in optical remote sensing images using a laboratory-based optical remote sensing simulation platform.The corresponding wave parameters of large-amplitude convex mode-2 ISWs under smooth surfaces are investigated along with the optical remote sensing characteristic parameters.The mode-2 ISWs in the experimentally obtained optical remote sensing image are produced by their overall modulation effect on the water surface,and the extreme points of the gray value of the profile curve of bright-dark stripes appear at the same location as the real optical remote sensing image.The present data extend to a larger range than previous studies,and for the characteristics of large amplitude convex mode-2 ISWs,the experimental results show a second-order dependence of wavelength on amplitude.There is a close relationship between optical remote sensing characteristic parameters and wave parameters of mode-2 ISWs,in which there is a positive linear relationship between the bright-dark spacing and wavelength and a nonlinear relationship with the amplitude,especially when the amplitude is very large,there is a significant increase in bright-dark spacing. 展开更多
关键词 mode-2 internal solitary waves optical remote sensing characteristic parameter wave characteristic
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Proposed Wave Momentum Source for Generating the 22-Year Solar Cycle
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作者 Hans G. Mayr 《International Journal of Astronomy and Astrophysics》 2023年第2期74-88,共15页
For the 22-year solar cycle oscillation there is no external time dependent source. A nonlinear oscillation, the solar cycle must be generated internally, and Babcock-Leighton models apply an artificial nonlinear sour... For the 22-year solar cycle oscillation there is no external time dependent source. A nonlinear oscillation, the solar cycle must be generated internally, and Babcock-Leighton models apply an artificial nonlinear source term that can simulate the observations—which leaves open the question of the actual source mechanism for the solar cycle. Addressing this question, we propose to take guidance from the wave mechanism that generates the 2-year Quasi-biennial Oscillation (QBO) in the Earth atmosphere. Upward propagating gravity waves, eastward and westward, deposit momentum to generate the observed zonal wind oscillation. On the Sun, helioseismology has provided a thorough understanding of the acoustic p-waves, which propagate down into the convective envelope guided by the increasing temperature and related propagation velocity. Near the tachocline with low turbulent viscosity, the waves propagating eastward and westward can produce an axisymmetric 22-year oscillation of the zonal flow velocities that can generate the magnetic solar dynamo. Following the Earth model, waves in opposite directions can generate in the Sun wind and magnetic field oscillations in opposite directions, the proposition of a potential solar cycle mechanism. 展开更多
关键词 Dynamo Models Apply Artificial Nonlinearity Wave Generated Nonlinear Terrestrial 2-Year Oscillation Model-Analogue Example Helioseismology Wave Source Proposed for Solar Cycle Mechanism
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便携式微型化大学物理电学实验平台的设计与应用 被引量:1
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作者 周艳明 翦知渐 +1 位作者 谢中 周正贵 《物理实验》 2022年第1期44-49,共6页
基于WAVE2微型示波器设计开发了便携式物理电学实验平台.利用该实验平台,可以开展示波器的使用、二极管整流特性、热敏电阻温度特性、PN结的物理特性、电阻应变式传感器等多个电学实验项目的教学,扩展了电学实验内容.与居家实验项目结合... 基于WAVE2微型示波器设计开发了便携式物理电学实验平台.利用该实验平台,可以开展示波器的使用、二极管整流特性、热敏电阻温度特性、PN结的物理特性、电阻应变式传感器等多个电学实验项目的教学,扩展了电学实验内容.与居家实验项目结合,能够在非实验室环境下开展涵盖完整内容的物理实验教学.利用该平台构建的实验项目,可用于逾期学生实验重修的替代方案,为大学物理实验线上线下混合式教学积累经验. 展开更多
关键词 居家实验 电学实验平台 wave2微型示波器
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DIRECT NUMERICAL SIMULATION OF VIBRATIONINDUCED T-S WAVE ON BOUNDARY LAYER WALL
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作者 曹卫东 李跃 蒋婷 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2009年第4期274-279,共6页
The spatial growth of the disturbance in the boundary layer is directly numerically simulated, and the receptivity of the Blasius basic flow to the local two-dimensional (2-D) sustainable micro-vibration is investig... The spatial growth of the disturbance in the boundary layer is directly numerically simulated, and the receptivity of the Blasius basic flow to the local two-dimensional (2-D) sustainable micro-vibration is investigated. Results show that the disturbance velocity presents the sine vibration features with the change of time, and the vibration period is identical to the vibration of the local wall. The disturbance velocity presents the fluctuation feature downstream, and the streamwise wave length approximates to the results from the Orr-Sommerfeld equation (OSE). The growth rate from direct numerical simulation(DNS) is a little greater than that from OSE, and their trends are almost consistent. Under the condition of Re= 2 800, the disturbance amplitude gradually grows in the given computational region with the period T=30. However, it firstly increases and then decreases with the period T= 20. The disturbance harmonic of the former is obviously larger than that of the latter. The maximum streamwise and vertical disturbance velocities from DNS do not fully coincide with those from OSE at the vicinity of the local vibration wall, but coincide well with the former when they travel downstream. The 2-D disturbance induced by the local micro-vibration represents the form of Tollmien-Schlichting (T-S) wave on the boundary layer. 展开更多
关键词 boundary layers direct numerical simulation vibrations DISTURBANCE 2-D T-S wave
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NONLINEAR EVOLUTION OF TWO-DIMENSIONAL T-S WAVE IN LOCALIZED ROUGH BOUNDARY LAYER
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作者 陆昌根 吴卫国 戚琴娟 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2009年第3期192-198,共7页
Numerical simulations are carried out to investigate the mechanism of the nonlinear evolution of two- dimensional (2-D) Tollmien-Schlichting (T-S) wave on a localized rough boundary layer. The three-dimensional (... Numerical simulations are carried out to investigate the mechanism of the nonlinear evolution of two- dimensional (2-D) Tollmien-Schlichting (T-S) wave on a localized rough boundary layer. The three-dimensional (3-D) numerical solution of a base flow on a boundary layer is obtained for the localized rough wall with the local- ized ejection, the localized suction and the combination of ejection and suction. Based on numerical simulations, the processes of stable and the most instable nonlinear evolution of the 2-D disturbance T-S wave are studied. The effects of the form on the localized roughness, the intensity, and the distribution structure on the nonlinear evolution of 2-D T-S wave and the growth rate are discussed. Results show that the basic flow induced by the lo- calized rough wall is a key factor causing the fast growth of the disturbance wave. Due to the change of the aver- age flow profile and the existence of the spanwise velocity, the localized rough wall enhances the instability of the flow. Consequently, the instable region of the neutral curve is enlargened, and the maximnum growth rate of the 2-D T-S wave is increased. In the process of the nonlinear evolution of 2-D disturbance T-S wave, with the in- crease of the nonlinear interaction, the most instable 2-D disturbance wave triggers the appearance of the 3-D dis- turbance wave and the high-frequency harmonic wave. Its streamwise wave number and the frequency are the same as those of 2-D disturbance wave. The spanwise velocity can excite the growth of the 2-D disturbance wave, the instability of 2-D wave, the formation of the streamwise vortex, and the generation of 3-D disturbance wave. Simulation results agree well with experimental results. 展开更多
关键词 surface roughness boundary layers 2-D T-S wave
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日本证实细胞移动的关键机理有助于研发控制癌细胞扩散新药
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《生物医学工程研究》 2003年第4期49-49,共1页
关键词 日本 细胞移动 癌细胞扩散 药品研制 wave2 蛋白质
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Simulation of Typhoon-Driven Waves in the Yangtze Estuary with Multiple-Nested Wave Models 被引量:12
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作者 徐福敏 Will Perrie +2 位作者 张君伦 宋志尧 Bechara Toulany 《China Ocean Engineering》 SCIE EI 2005年第4期613-624,共12页
Typhoon-generated waves are simulated with two numerical wave models, the SWAN model for the coastal and Yangtze Estuary domain, nested within the WAVEWATCHIII (WW3) for the basin-scale East China Sea domain. Typhoo... Typhoon-generated waves are simulated with two numerical wave models, the SWAN model for the coastal and Yangtze Estuary domain, nested within the WAVEWATCHIII (WW3) for the basin-scale East China Sea domain. Typhoon No. 8114 is chosen because it was very strong, and generated high waves in the Estuary. WW3 was implemented for the East China Sea coarse-resolution computational domain, to simulate the waves over a large spatial scale and provide boundary conditions for SWAN model simulations, implemented on a fine-resolution nested domain for the Yangtze Estuary area. The Takahashi wind model is applied to the simulation of the East China Sea scale (3-hourly) and Yangtze Estuary scale (1-hourly) winds. Simulations of significant wave heights in the East China Sea show that the highest waves are on the right side of the storm track, and maxima tend to occur at the eastern deep-water open boundary of the Yangtze Estuary. In the Yangtze Estuary, incoming swell is dominant over locally generated waves before the typhoon approaches the Estuary. As the typhoon approaches the Estuary, wind waves and swell coexist, and the wave direction is mainly influenced by the swell direction and the complex topography. 展开更多
关键词 WW3 SWAN typhoon-generated waves East China Sea Yangtze Estuary Takahashi wind model 2 D wave spectra significant wave height
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Nonlinear Random Motion Analysis of Coupled Heave-Pitch Motions of a Spar Platform Considering lst-Order and 2nd-Order Wave Loads 被引量:6
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作者 Shuxiao Liu YougangTang Wei Li 《Journal of Marine Science and Application》 CSCD 2016年第2期166-174,共9页
In this study, the coupled heave-pitch motion equations of a spar platform were established by considering lst-order and 2nd-order random wave loads and the effects of time-varying displacement volume and transient wa... In this study, the coupled heave-pitch motion equations of a spar platform were established by considering lst-order and 2nd-order random wave loads and the effects of time-varying displacement volume and transient wave elevation. We generated random wave loads based on frequency-domain wave load transfer functions and the Joint North Sea Wave Project (JONSWAP) wave spectrum, designed program codes to solve the motion equations, and then simulated the coupled heave-pitch motion responses of the platform in the time domain. We then calculated and compared the motion responses in different sea conditions and separately investigated the effects of 2nd-order random wave loads and transient wave elevation. The results show that the coupled heave-pitch motion responses of the platform are primarily dominated by wave height and the characteristic wave period, the latter of which has a greater impact. 2nd-order mean wave loads mainly affect the average heave value. The platform's pitch increases after the 2nd-order low frequency wave loads are taken into account. The platform's heave is underestimated if the transient wave elevation term in the motion equations is neglected. 展开更多
关键词 spar platform coupled heave-pitch random waves 2nd-order wave loads transient wave elevation time domain analysis
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Mooring observed mode-2 internal solitary waves in the northern South China Sea 被引量:4
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作者 Liang Chen Xuejun Xiong +7 位作者 Quanan Zheng Yeli Yuan Long Yu Yanliang Guo Guangbing Yang Xia Ju Jia Sun Zhenli Hui 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2020年第11期44-51,共8页
The mode-2 internal solitary waves(ISWs)generated by mode-2 internal tide(IT)are identified by mooring observations in the northern South China Sea(SCS)from 2016 to 2017.Two mode-2 ISWs with a re-appearance period of ... The mode-2 internal solitary waves(ISWs)generated by mode-2 internal tide(IT)are identified by mooring observations in the northern South China Sea(SCS)from 2016 to 2017.Two mode-2 ISWs with a re-appearance period of 24.9 h observed on 29 and 30 July 2016 are characterized by type-b ISWs.They occurred when the isotherms compressed obviously in the vertical direction.Modal decomposition of IT horizontal currents shows that the vertical compression of the isotherms is mainly caused by diurnal mode-2 IT.The analysis of the role of the density stratification reveals that a deeper and thinner pycnocline is favorable for generation of mode-2 ISWs rather than pycnocline intensity.By comparing the mode-2 nonlinear,dispersion coefficients and the Ursell numbers calculated based on the stratification associated with different kinds of ITs with the observation results,it is shown that the diurnal mode-2 IT plays a crucial role in the generation of the mode-2 ISWs.When the diurnal mode-2 IT interacts with the semidiurnal IT and causes a deeper and thinner pycnocline,the mode-2 ISWs are easily excited. 展开更多
关键词 mode-2 internal solitary waves South China Sea internal tide mooring observation
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Numerical study on maximum rebound ratio in blasting wave propagation along radian direction normal to joints 被引量:3
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作者 雷卫东 滕军 +2 位作者 HEFNY A 赵坚 关炯 《Journal of Central South University of Technology》 EI 2006年第6期743-748,共6页
In the process of 2-D compressional wave propagation in a rock mass with multiple parallel joints along the radian direction normal to the joints, the maximum possible wave amplitude corresponding to the points betwee... In the process of 2-D compressional wave propagation in a rock mass with multiple parallel joints along the radian direction normal to the joints, the maximum possible wave amplitude corresponding to the points between the two adjacent joints in the joint set is controlled by superposition of the multiple transmitted and the reflected waves, measured by the maximum rebound ratio. Parametric studies on the maximum rebound ratio along the radian direction normal to the joints were performed in universal distinct element code. The results show that the maximum rebound ratio is influenced by three factors, i.e., the normalized normal stiffness of joints, the ratio of joint spacing to wavelength and the joint from which the wave rebounds. The relationship between the maximum rebound ratio and the influence factors is generalized into five charts. Those charts can be used as the prediction model for estimating the maximum rebound ratio. 展开更多
关键词 2-D compressional wave maximum rebound ratio stiffness of joint
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波浪与防波堤相互作用的数值模拟
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作者 赵飞达 刘儒伦 +1 位作者 王在峰 宋积文 《中国水运(下半月)》 2022年第9期48-49,共2页
防波堤作为一种挡浪消浪的水下结构物,可以有效地减少波浪对港口及其海岸的影响。这对延长港口使用寿命、降低事故发生率具有重要意义和实用价值。文中基于有限体积法理论,利用开源计算流体力学软件OpenFOAM和wave2foam库建立了三维数... 防波堤作为一种挡浪消浪的水下结构物,可以有效地减少波浪对港口及其海岸的影响。这对延长港口使用寿命、降低事故发生率具有重要意义和实用价值。文中基于有限体积法理论,利用开源计算流体力学软件OpenFOAM和wave2foam库建立了三维数值波池模型。海浪的传播过程分别用孤立波和规则波模拟。分析了防波堤与孤立波和规则波的相互作用,得到了不同波浪作用下防波堤的力学特性和水动力特性。试验结果表明,在相同高度和宽度下,梳状防波堤与倾斜式防波堤的消波性能差别不大,但造价较低,更适合实际应用。 展开更多
关键词 OPENFOAM 数值模拟 波浪-结构物相互作用 防波堤 Waves2Foam
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