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FUZZY RELIABILITY-BASED OPTIMUM DESIGN OF LAMINATED COMPOSITES

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Acta Mechanica Solida Sinica 2006年第3期19卷 255-263页

作者： Wei Junhong Chen Jianqiao ge rui Department of Mechanics Huazhong University of Science and Technology Wuhan 430074 China

In conventional reliability-based optimum design of structures, the reliability is computed based on the probability assumption, and the design objective and constraint are considered as deterministic ones. In many cases, however, there exist some fuzzy factors in the design objective and constraint functions. In this paper, the fuzzy reliability and fuzzy constraint are introduced to establish the fuzzy reliability-based optimum model for laminated composites. The examples show that the method developed in this paper can give consideration to both the reliability demand and the economic aspect of a structure. Since the fuzzy reliability-based optimum design is a ＇soft＇ design, the present results provide a new methodology for the effective evaluation of structural reliability and bring us an alternative optimum design idea.

关键词： fuzzy reliability fuzzy constraint the best safety level fuzzy synthetic evaluation

Reliability design optimization of composite structures based on PSO together with FEA

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Chinese Journal of Aeronautics 2013年第2期26卷 343-349页

作者： Chen Jianqiao Tang Yuanfu ge rui An Qunli Guo Xiwei Department of Mechanics Huazhong University of Science and Technology Research and Development Center Wuhan Iron and Steel (Group) Corp.

The present work aims to develop a method for reliability-based optimum design of composite structures. A procedure combining particle swarm optimization （PSO） and finite element analysis （FEA） has been proposed. Numerical examples for the reliability design optimization （RDO） of a laminate and a composite cylindrical shell are worked out to demonstrate the effectiveness of the method. Then a design for composite pressure vessels is studied. The advantages and necessity of RDO over the conventional equi-strength design are addressed. Examples show that the proposed method has good stability and is efficient in dealing with the probabilistic optimal design of composite structures. It may serve as an effective tool to optimize other complicated structures with uncertainties.

关键词： Composite structures FEA PSO Reliability analysis Reliability design optimization

Experimental studies on the heat transfer characteristics of helium-based cryogenic oscillating heat pipes

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Radiation Detection Technology and Methods 2024年第3期8卷 1430-1436页

作者： Huo Yi Ma Changcheng Zhang Jun Huang rui ge rui Institute of High Energy Physics Chinese Academy of SciencesBeijing100049China University of Chinese Academy of Sciences Beijing100049China Hefei University of Technology HefeiChina

Purpose Copper is a cooling transfer material used in cryogenic superconducting *** effective thermal conductivity(ETC)of copper in the 4K region is only about 400 W/(m K).Its heat transfer performance is poor,there are some shortcomings such as large temperature difference,temperature fluctuation lag,cryogenic system layout *** ETC value of helium-based cryogenic oscillating heat pipes(COHP)in the 4K region is much higher than that of ***,the choice of heating power interval is very important,and the heating power will affect the oscillation characteristics of *** In this study,a helium-based COHP heat transfer performance test platform was built in the 4K region,and the effects of heating power and liquid filling rate on oscillation conditions and ETC were *** heating power ranges from 0.1 to 0.5 W,and the liquid filling rate ranges from 20%to 87%.Results and conclusion The heating power interval suitable for oscillation behavior is given *** intrinsic correlation between ETC and amplitude is further *** results are of great significance for improving the performance of cryogenic superconducting systems.

关键词： Heat transfer characteristics Cryogenic oscillating heat pipe Oscillation intensity

Simulation study on thermal performance of two turns helium cryogenic oscillating heat pipe for superconducting accelerator

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Radiation Detection Technology and Methods 2023年第3期7卷 427-434页

作者： Yi Huo Changcheng Ma Jun Zhang rui Huang rui ge University of Chinese Academy of Sciences BeijingChina Institute of High Energy Physics BeijingChina Hefei University of Technology HefeiChina

Purpose In recent years,with the further development of superconducting technology,superconducting devices have been applied in particle accelerators and synchrotron radiation light source *** a new type of heat transfer structure,helium cryogenic oscillating heat pipe can be used to balance local hot spots in superconductors and improve heat transfer *** In this paper,a two-dimensional two-turns helium cryogenic oscillating heat pipe model is *** flow performance of helium cryogenic oscillating heat pipe was analyzed by CFD *** and conclusion The results show that the development of flow pattern in the helium cryogenic oscillating heat pipe first forms bubble flow under the heating of the evaporation section,and then gradually forms slug flow and annular *** process consists of initial stage,transition stage and running *** the running stage,the effective thermal conductivity of COHP oscillates around 15,000 W/(m·K).

关键词： Cryogenic oscillating heat pipe Helium CFD simulation Superconducting accelerator

Role of interleukin 18 in acute lung inflammation induced by gut ischemia repeifusion

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World Journal of Gastroenterology 2005年第29期11卷 4524-4529页

作者： Yong-Jie Yang Yun Shen Song-Hua Chen Xi-rui ge Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Shanghai 20003 l China Department of Traditional Chinese Medicine Shanghai University of Traditional Chinese Medicine Shanghai 201023 China Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200031 China

AIM: To study the changes of endogenous interleukin 18 (IL-18) levels and evaluate the role of IL-18 on lung injury following gut ischemia/***: A superior mesenteric artery occlusion model was selected for this research. The mice were randomly divided into four groups: Sham operation (sham), ischemia (0.5 h) followed by different times of reperfusion (I/R),and I/R pretreated with exogenous IL-18 (I/R+IL-18) or IL-18 neutralizing antibody (I/R+IL-18Ab) 15 min before ischemia. Serum IL-18 levels were detected by Western blot and ELISA, and the levels of IL-18 in lung tissue were evaluated by immunohistochemical staining. For the study of pulmonary inflammation, the lung myeloperoxidase (MPO) contents and morphological changes were ***: Gut ischemia/reperfusion induced rapid increase of serum IL-18 levels, peaked at 1 h after reperfusion and then declined. The levels of IL-18 in lung tissue were gradually enhanced as the progress of *** with I/R group, exogenous administration of IL-18 (I/R+IL-18) further remarkably enhanced the pulmonary MPO activity and inflammatory cell infiltration,and in I/R+IL-18Ab group, the content of MPO were significantly reduced and lung inflammation was also ***: Gut ischemia/reperfusion induces the increase of IL-18 expression, which may make IL-18 act as an important proinflammatory cytokine and contribute to gut ischemia/reperfusion-induced lung inflammation.

关键词： IL-18 Ischemia, Reperfusion Inflammation

High-order nonreciprocal add-drop filter

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Science China(Physics,Mechanics & Astronomy) 2021年第12期64卷 121-129页

作者： Hang Li rui ge YuChen Peng Bei Yan JianLan Xie JianJun Liu ShuangChun Wen Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China

Topological photonics have led to robust optical behavior of optical devices, which has alleviated the influence of manufacturing defects and perturbations on the device performance. Meanwhile, temporal coupled-mode theory(t-CMT) has been developed and applied widely. However, the t-CMT of cascaded coupled cavities(CCC) system and its corresponding high-order filter has yet to be established. Here, the t-CMT of CCC system is established based on the existing t-CMT. By combining the CCC with topological waveguides, a versatile design scheme of high-order nonreciprocal add-drop filter(HONAF) is proposed. The relationship between the coupling effect of cavities and transmission and the filtering performance of HONAF is analyzed quantitatively. Then, a method to improve the transmission efficiency and quality factor of the filter is given. The proposed HONAF is based on the combination of gyromagnetic photonic crystals and decagonal Penrose-type photonic quasicrystals. The transmission and filtering performance of the HONAF are numerically analyzed, which verifies the consistency between theoretical prediction and numerical simulation. The established t-CMT of CCC system can be widely used in coupled resonator optical waveguides and their related systems. The proposed HONAF with excellent performance can also be applied to wavelength division multiplexing/demultiplexing systems.

关键词： filter photonic crystals photonic quasicrystals temporal coupled-mode theory

Breakthroughs on tailoring membrane materials for ethanol recovery by pervaporation

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Chinese Journal of Chemical Engineering 2022年第12期52卷 19-36页

作者： Xia Zhan Xueying Zhao Zhongyong Gao rui ge Juan Lu Luying Wang Jiding Li Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business UniversityBeijing 100048China The Institute of Medicinal Plant Development The Chinese Academy of Medical Sciences(CAMS)and Peking Union Medical College(PUMC)Beijing 100193China Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityBeijing 100083China The State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Bioethanol, as a clean and renewable fuel, has gained increasing attention due to its major environmental benefits. Pervaporation(PV) is a promising and competitive technique for the recovery of ethanol from bioethanol fermentation systems due to the advantages of environmental friendliness, low energy consumption and easy coupling with fermentation process. The main challenge for the industrial application of ethanol perm-selective membranes is to break the trade-off effect between permeability and selectivity. As membrane is the heart of the pervaporation separation process, this article attempts to provide a comprehensive survey on the breakthroughs of ethanol perm-selective PV membranes from the perspectives of tailoring membrane materials to enhance PV separation performance. The research and development of polymeric and organic/inorganic hybrid membranes are reviewed to explore the fundamental structure-property-performance relationships. It is found that mixed matrix membranes with welldesigned membrane structures offer the hope of better control overphysi-/chemical microenvironment and cavity/pore size as well as size distribution, which may provide both high permeability and membrane selectivity to break the trade-off effect. The tentative perspective on the possible future directions of ethanol perm-selective membranes is also briefly discussed, which may provide some insights in developing a new generation of high-performance PV membranes for ethanol recovery.

关键词： Pervaporation Ethanol recovery Microstructure Polymeric membrane Mixed matrix membrane

Changes in the epidemiological burden of melanoma in China from 1990 to 2019 based on the Global Burden of Disease

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中华医学杂志(英文版) 2024年第21期137卷 2636页

作者： Tian Qiong Hu Li Bai ruimin ge rui Zhang Jian Department of Dermatology The First Affiliated Hospital of Xi’an Jiaotong University Xi’an Shaanxi China Department of Pathogenic Biology and Immunology School of Basic Medical Sciences Xi’an Jiaotong University Xi’an Shaanxi China

According to GBD 2019, in Asia, China ranked 12th, 15th, and 27th for these rates among 48 countries, and 3rd among East Asian countries [Supplementary Figure 1, http://***/CM9/C75].According to period and birth cohort trends of melanoma in China, the incidence ASR of melanoma in those aged ≥20 years tended to increase annually with age.[...]all data pertaining to incidence, prevalence, and mortality were estimates.[...]our results suggest that melanoma incidence in China increased during 1990–2019, with the burden of premature melanoma deaths on the socio-economic and healthcare systems in China surpassing the global average.

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BCSE:Blockchain-Based Trusted Service Evaluation Model over Big Data

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Big Data Mining and Analytics 2022年第1期5卷 1-14页

作者： Fengyin Li Xinying Yu rui ge Yanli Wang Yang Cui Huiyu Zhou School of Computer Science Qufu Normal UniversityRizhao 276826China School of Informatics University of LeicesterLeicesterLE17RHUK

The blockchain,with its key characteristics of decentralization,persistence,anonymity,and auditability,has become a solution to overcome the overdependence and lack of trust for a traditional public key infrastructure on third-party *** of these characteristics,the blockchain is suitable for solving certain open problems in the service-oriented social network,where the unreliability of submitted reviews of service vendors can cause serious security *** solve the unreliability problems of submitted reviews,this paper first proposes a blockchain-based identity authentication scheme and a new trusted service evaluation model by introducing the scheme into a service evaluation *** new trusted service evaluation model consists of the blockchain-based identity authentication scheme,evaluation submission module,and evaluation publicity *** the proposed evaluation model,only users who have successfully been authenticated can submit reviews to service *** registration and authentication records of users’identity and the reviews for service vendors are all stored in the blockchain *** security analysis shows that this model can ensure the credibility of users’reviews for service vendors,and other users can obtain credible reviews of service vendors via the review publicity *** experimental results also show that the proposed model has a lower review submission delay than other models.

关键词： social network trusted service evaluation model blockchain identity authentication