Two-dimensional numerical simulation and experiment on strongly nonlinear wave–body interactions

A constrained interpolation profile (CIP)-based Cartesian grid method for strongly nonlinear wave–body interaction problems is presented and validated by a newly designed experiment, which is performed in a two-dimensional wave channel. In the experiment, a floating body that has a rectangular section shape is used. A superstructure is installed on the deck and a small floating-body freeboard is adopted in order to easily obtain water-on-deck phenomena. A forced oscillation test in heave and a wave–body interaction test are carried out. The numerical simulation is performed by the CIP-based Cartesian grid method, which is described in this paper. The CIP scheme is applied in the Cartesian grid-based flow solver. New improvements of the method include an interface-capturing method that applies the tangent of hyperbola for interface capturing (THINC) scheme and a virtual particle method for the floating body. The efficiency of the THINC scheme is shown by a dam-breaking computation. Numerical simulations on the experimental problem for both the forced oscillation test and the wave–body interaction test are carried out, and the results are compared to the measurements. All of the comparisons are reasonably good. It is shown, based on the numerical examples, that the present CIP-based Cartesian grid method is an accurate and efficient method for predicting strongly nonlinear wave–body interactions.     

ITS共用信息平台的研究

针对目前智能交通各子系统独立应用,存在大量信息孤岛,信息无法充分利用的现状,分析了共用信息平台在数据交换、数据共享以及数据融合挖掘等方面的功能,提出了一种共用信息平台的体系结构,并着重分析了平台各模块的功能。该共用信息平台在实现智能交通系统各子系统的集成上具有良好的灵活性和可扩展性。     

溃坝问题的数值仿真和实验(英文)

In this paper, two novel numerical computation methods are introduced which have been recently developed at Research Institute for Applied Mechanics ( RIAM ), Kyushu University, for strongly nonlinear wave-body interaction problems, such as ship motions in rough seas and resulting green-water impact on deck. The first method is the CIP-based Cartesian grid method, in which the free surface flow is treated as a multi-phase flow which is solved using a Cartesian grid. The second method is the MPS method, which is a so-called particle method and hence no grid is used. The features and calculation procedures of these numerical methods are described. One validation computation against a newly conducted experiment on a dam break problem, which is also described in this paper, is presented.     

结肠癌中hTERT、p21(WAF1/CIP1)的表达及二者相关性研究

目的　探讨hTERT和 p2 1(WAF1/CIP1) (以下简称p2 1)在结肠癌发病中的作用及其相互关系。方法　采用原位杂交和SABC免疫组化技术 ,分别检测 45例结肠癌、10例结肠腺瘤及 10例正常结肠组织中hTERT和 p2 1的表达。结果　hTERT、p2 1阳性反应不仅见于结肠癌 (阳性率分别为 88.9%、46.7% ) ,而且也见于结肠腺瘤 (阳性率分别为 50 .0 %、10 .0 % ) ;结肠癌中hTERT阳性率在晚临床分期 (C +D)病例中增高 (P <0 .0 5) ,而p2 1阳性率在低分化癌及晚临床分期 (C +D)病例中降低 (P <0 .0 5) ;结肠癌中hTERT表达与p2 1表达有相关性 (P <0 .0 5)。结论　hTERT表达和p2 1缺乏均与结肠癌发生有关 ,其表达变化可用于评估结肠癌的生物学行为和判定预后 ,且hTERT较 p2 1更具参考价值     

CIP2A在肝癌组织中的表达及其临床意义

目的探讨CIP2A在肝细胞癌中的表达及其与肝癌临床病理特征的关系。方法采用免疫组化法分析CIP2A蛋白在肝癌组织、癌旁肝组织以及正常肝脏组织中的表达分布;采用RT-PCR法检测肝癌组织及其相对应的癌旁肝组织中CIP2A mRNA的转录水平,统计分析CIP2A mRNA的转录水平与肝癌临床病理特征之间的关系。结果 CIP2A阳性表达主要定位于细胞胞质,肝癌组织中阳性表达率为71.7%(43/60);相对应的癌旁肝组织则较少见CIP2A蛋白阳性表达,其阳性率为23.3%(14/60),且阳性染色分布散在稀疏;正常肝组织中未见CIP2A蛋白阳性表达。肝癌组织中CIP2A mRNA的转录水平显著高于其相对应的癌旁肝组织(P<0.05)。CIP2A mRNA转录水平与肝癌直径、肝癌组织病理分化、临床TNM分期以及是否合并肝癌转移(门静脉癌栓浸润以及肝内转移)等临床病理特征显著相关(P<0.05)。结论 CIP2A在肝癌组织中高表达,且与肝癌的恶性临床病理特征密切相关;CIP2A可能成为潜在的肝癌分子标志物或治疗靶点。     

出口贸易中，采用CIP比采用CIF有利

介绍了在国际贸易中,贸易术语CIF和CIP的异同及其产生的缘由。针对中国外贸实况和集装箱运输与多式联运的迅速发展,论述了采用CIP的意义。     

ITS共用信息平台的研究

针对目前智能交通各子系统独立应用,存在大量信息孤岛,信息无法充分利用的现状,分析了共用信息平台在数据交换、数据共享以及数据融合挖掘等方面的功能,提出了一种共用信息平台的体系结构,并着重分析了平台各模块的功能。该共用信息平台在实现智能交通系统各子系统的集成上具有良好的灵活性和可扩展性。     

P53与P21(WAF1/CIP1)在甲状腺癌中的表达及临床意义

目的　探讨 P53、P2 1 (WAF1 /CIP1 )基因与甲状腺癌的发生、发展及预后的关系以及它们的相互关系。方法　应用 S- P免疫组化技术 ,检测 60例甲状腺癌、1 0例正常甲状腺组织、1 0例结节性甲状腺肿、1 0例甲状腺腺瘤组织中 P53、P2 1 (WAF1 /CIP1 )的表达。结果　 P53、P2 1(WAF1 /CIP1 )阳性反应仅见于甲状腺癌 ,其阳性率分别为 53.3%、41 .7% ;P53阳性率在未分化癌、有淋巴结转移或 、 期病例中增高 (P <0 .0 5) ;但 P2 1 (WAF1 /CIP1 )阳性率在未分化癌、有淋巴结转移或 、 期病例中降低 (P <0 .0 5) ;P53表达与 P2 1 (WAF1 /CIP1 )表达关系密切(P <0 .0 5)。结论　 P53突变、P2 1 (WAF1 /CIP1 )缺乏均与甲状腺癌发生有关 ;P2 1 (WAF1 /CIP1 )在甲状腺癌中表达主要依赖于 P53;P53、P2 1 (WAF1 /CIP1 )在甲状腺癌中表达的变化可用于评估其生物学行为和判断预后     

Numerical simulation of violent sloshing by a CIP-based method

In this article, a new computational fluid dynamics simulation approach based on the constraint interpolation profile (CIP) method is applied to tackle the violent sloshing problem. The present study considers two-dimensional sloshing phenomena in a rectangular tank. By the proposed method, the sloshing problem is viewed as a multiphase problem that includes water and air flows. A stationary Cartesian grid is used and the free surface is solved by an interface capturing method. The CIP combined unified procedure (CCUP) scheme was adopted for the flow solver, and both the CIP scheme and the CIP conservative semi-Lagrangian with cubic interpolation polynomial (CIP-CSL3) scheme were used for interface capturing. For validation of the numerical method, a physical experiment was conducted with a rectangular tank for several frequencies and filling heights. A convergence check was first performed for the method. The numerical simulation results on violent sloshing show that the use of the CIP-CSL3 scheme as an interface capturing procedure gives much better results for the pressures and free-surface profiles than the conventional CIP scheme.     

NetLinx开放网络体系结构在煤码头测控系统中的应用

介绍应用NetLinx开放网络体系结构组建的秦皇岛港煤五期码头自动化测控系统.系统信息层为EtherNet/IP工业以太网,控制层为ControlNet控制网,设备层为DeviceNet设备网.该系统实现了煤码头翻车机、堆料机、取料机、装船机、皮带机及附属设施等多种设备测控系统之间的无缝连接,系统集成成本低,具有良好的网络通信功能及较高的系统运行稳定性和可靠性.