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Defence Technology（防务技术） 2021年第2期17卷 315-326页

作者： Jia-yun Liu Yong-xiang Dong Xuan-yi An Ping Ye Qi-tian Sun Qian Gao State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

The explosive reaction degree and protection from explosions are concerns in the military *** this work,the reaction degree of the composition B explosive was investigated ***-layered compound structures were used as barriers to weaken the blast loads.A comprehensive experiment using a high-speed camera and image processing techniques,side witness plates,and bottom witness plates was *** the experimental fragment velocities,fragment piercing patterns,and damage characteristics,the reaction degree of the explosive impeded by different multi-layered compound structures could be precisely *** parameters of the explosive obstructed by compound structures were obtained by theoretical analysis and numerical *** the common method in which the explosive reaction degree is only distinguished based on the initial pressure amplitude transmitted into the explosive,a following shock wave reflected from the side steel casing was also *** detonation growth paths in the explosive ***,all these shock wave propagation characteristics must be considered to analyze the explosive response impeded by compound structures.

关键词： Reaction degree Explosive protection compound structure Comprehensive experiment

compound structure analysis of a new chaotic system

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Journal of Southeast University(English Edition) 2004年第4期20卷 477-481页

作者：刘文波陈关荣南京航空航天大学自动化学院南京210016 香港城市大学电子工程系

This paper analyzes the compound attractor structure of a new three-dimensional autonomous chaotic system. First, it is found that there exist five equilibria in the chaotic system, and the stabilities of these equilibria are discussed under a constant scalar control input parameter m. Secondly, the trajectories of the attractors on a y-z plane are examined, the reasons why these trajectories can exist or disappear are also described. Finally, the forming procedure of the different scrolls chaotic attractor is explored by computer simulations when the parameter m is varied. It is shown that the new chaotic attractor has a compound structure, it can evolve to other three-dimensional autonomous chaotic systems. The results of theoretical analysis and simulation are helpful for better understanding of other similar chaotic systems.

关键词： three-dimensional autonomous system chaos equilibrium attractor characteristic equation compound structure

compound structure OF NEW FOUR-SCROLLS CHAOTIC SYSTEM

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Transactions of Nanjing University of Aeronautics and Astronautics 2003年第2期20卷 192-195页

作者：刘文波陈关荣南京航空航天大学自动化学院香港城市大学电子工程系

The finding of the compound structure of a new four-scrolls chaotic system is reported, which is obtained by merging together two symmetrical attractors. And the two symmetrical attractors are generated only by adding a constant gain to the original system. Also, the forming procedure of the new four-scrolls chaotic attractor is explored and the relation between the constant gain and the properties of the system is given.

关键词： three-dimensional autonomous system chaotic attractor compound structure

Wave Radiation by A Submerged Ring Plate in Water of Finite Depth

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China Ocean Engineering 2019年第6期33卷 660-672页

作者： CONG Pei-wen LIU Ying-yi GOU Ying TENG Bin State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China Department of Civil and Environmental Engineering National University of Singapore117576Singapore Research Institute for Applied Mechanics Kyushu UniversityKasugaFukuoka 816-8580Japan

A plate submerged at a certain depth underneath the sea surface has been proposed as a structure type for different purposes, including motion response reduction, wave control, and wave energy harvesting. In the present study, the three-dimensional wave radiation problem is investigated in the context of the linear potential theory for a submerged ring plate in isolation or attached to a floating column as an appendage. In the latter case, the ring plate is attached at a certain distance above the column bottom. The structure is assumed to undergo a heave motion. An analytical model is developed to solve the wave radiation problem via the eigenfunction expansion method in association with the region-matching technique. With the velocity potential being available, the hydrodynamic coefficients, such as added mass and radiation damping, are obtained through the direct pressure integration. An alternative solution of radiation damping has also been developed in this study, in which the radiation damping is related to the Kochin function in the wave radiation problem. After validating the present model, numerical analysis is performed in detail to assess the influence of various plate parameters, such as the plate size and submergence depth. It is noted that the additional added mass due to the attached ring plate is larger than that when the plate is in isolation. Meanwhile, the radiation damping of the column for the heave motion can vanish at a specific wave frequency by attaching a ring plate, corresponding to a condition that there exist no progressive waves in the exterior region.

关键词： compound structure hydrodynamic coefficients ring plate zero radiation damping

Daphne-type diterpenes from Daphne linn and their anti-tumor activity

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中国药理学与毒理学杂志 2019年第10期 891-891页

作者： YAO Guo-dong HOU Zi-lin SHANG Xin-yue SONG Shao-jiang School of Traditional Chinese Materia Medica Key Laboratory of Computational Chemistry-Based Natural Antitumor Drug Research & Development

In China, there are 44 kinds of plants belong to Daphne linn, which mainly distributed in southwest and northwest, they play noteworthy roles in traditional Chinese system of application. Daphne-type diterpenes are the active ingredients of Daphne linn. This review aims to give a systematic summary of this type compounds derived from Daphne linn regarding their chemical structures, anti-tumor activities as well as related molecular mechanisms. At the same time, the structure-activity relationship is also discussed briefly. The information related to compound structures, anti-tumor activities and its molecular mechanisms systematically collect from the scientific literature databases. There are about 100 Daphnane-type diterpenes in this genus, which can be divided into five different structural subtypes in accordance with the feature of their structure. In addition, some compounds with no typical structural features are categorized as a separate class. These compounds mainly show different degrees of inhibitory effect on various cancer cells, such as A549, HepG2, HCT116, MCF-7 and HL60. Furthermore, we find the inhibitory activities against human cancer cells is closely associated with their structure. In addition,we also summarize the molecular mechanisms of some representative compounds, such as Yuanhuacine, Yuanhuadine and Genkwadaphnin. We find that these compounds exert their anti-tumor effects mainly by inducing apoptosis,inhibiting invasion and migration, and reversing multidrug resistance. The potent molecular mechanisms by them might be associated with modulation of different cell-signaling pathways. These plants of Daphne linn have prominent medicinal properties, and the anti-tumor activity of Daphnane-type diterpenes is worthy of attention. In order to maximize its application, it is necessary to conduct in depth research. Collectively, we summarize this review and try to make marginal contributions to the further exploration of this type diterpenes.

关键词： Daphne linn Daphnane-type diterpenes compound structure anti-tumor effect molecular mechanism

财务会计概念框架基本逻辑缺陷与理论重构：复合架构思路

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