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Fault diagnosis method of link control system for gravitational wave detection

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Journal of Systems Engineering and Electronics 2024年第4期35卷 922-931页

作者： GAO Ai xu shengnan ZHAO Zichen SHANG Haibin xu Rui School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Autonomous Navigation and Control for Deep Space Exploration Ministry of Industry and Information TechnologyBeijing 100081China Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of EducationBeijing 100081China

To maintain the stability of the inter-satellite link for gravitational wave detection,an intelligent learning monitoring and fast warning method of the inter-satellite link control system failure is *** from the traditional fault diagnosis optimization algorithms,the fault intelligent learning method pro-posed in this paper is able to quickly identify the faults of inter-satellite link control system despite the existence of strong cou-pling *** constructing a two-layer learning network,the method enables efficient joint diagnosis of fault areas and fault *** simulation results show that the average identification time of the system fault area and fault parameters is 0.27 s,and the fault diagnosis efficiency is improved by 99.8%compared with the traditional algorithm.

关键词： large scale multi-satellite formation gravitational wave detection laser link monitoring fault diagnosis deep learning

Research on the Influence of Network Culture on the Moral Sense of College Students

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学术界 2014年第6期 289-293页

作者： xu shengnan School of Economics and Management Southwest Jiaotong University Chengdu Sichuan 610031

With the rapid development of information technology,the network,as"the fourth media"that college students contact most,has significant impact on the view of life,values and view of the world of college students. Various functions of the network culture also play an important role in the process of moral socialization of college students and in the change of moral cognition,moral emotion and moral will of college students. Thus,we should take full advantage of the multi-function of the network culture,spreading social mainstream values,holding various network moral education activities so as to improve the level of moral sense of college students. This paper attempts to research the influence of network culture from the perspective of moral mentality,starting from the functions of network culture and analyzing the influence of network upon the moral sense of college students,based on which this paper puts forward new concepts and methods of improving the moral education of college students.

关键词：道德意识网络文化大学生价值观念信息技术第四媒体道德意志教育活动

Comparisons of Wave Force Model Effects on the Structural Responses and Fatigue Loads of a Semi-Submersible Floating Wind Turbine

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Journal of Ocean University of China 2024年第1期23卷 69-79页

作者： HAN Yanqing LE Conghuan ZHANG Puyang xu shengnan State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China School of Hydraulic Engineering Ludong UniversityYantai 264025China School of Civil Engineering Tianjin UniversityTianjin 300072China Shandong Marine Aerospace Equipment Technological Innovation Center Yantai 264004China

The selection of wave force models will significantly impact the structural responses of floating wind *** this study,comparisons of wave force model effects on the structural responses and fatigue loads of a semi-submersible floating wind turbine(SFWT)were *** were performed by employing the Morison equation(ME)with linear or second-order wave kinematics and potential flow theory(PFT)with first-or second-order wave forces.A comparison of regular waves,irregular waves,and coupled wind/waves analyses with the experimental data showed that many of the simulation results and experimental data are relatively ***,notable discrepancies are found in the response amplitude operators for platform heave,tower base bending moment,and tension in mooring *** models give more satisfactory results of heave but more significant discrepan-cies in tower base bending moment than the ME *** irregular wave analyses,low-frequency resonances were captured by PFT models with second-order difference-frequency terms,and high-frequency resonances were captured by the ME models or PFT models with second-order sum-frequency *** force models capture the response frequencies but do not reasonably predict the response *** coupled wind/waves analyses showed more satisfactory results than the wave-only ***,an important detail to note is that this satisfactory result is based on the overprediction of wind-induced responses.

关键词： floating wind turbine wave force model potential flow theory Morison equation second-order wave forces

Salt-tolerant mechanism of marine Aspergillus niger cellulase cocktail and improvement of its activity

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Chinese Journal of Chemical Engineering 2020年第4期28卷 1120-1128页

作者： Linian Cai shengnan xu Tao Lu Dongqiang Lin Shanjing Yao Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China College of Environment Zhejiang University of TechnologyHangzhou 310014China

The cellulase cocktail produced by marine Aspergillus niger exhibits a property of salt-tolerance,which is of great potential in cellulose degradation in high salt *** order to explain the mechanism on the salttolerance of the cellulase cocktail produced by marine ***,six cellulase components(AnCel6,AnCel7A,AnCel7B,AnEGL,AnBGL1 and AnBGL2)were obtained by directed *** on their enzymatic properties revealed that oneβ-glucosidase(AnBGL2)and one endoglucanase(AnEGL)exhibited an outstanding salttolerant property,and one cellobiohydrolase(AnCel7B)exhibited a certain salt-tolerant *** study revealed that the salt-tolerant An EGL and AnCel7B endowed the cellulase cocktail with stronger salttolerant property,while the salt-tolerant An BGL2 had no positive ***,after overexpression of AnCel6,AnCel7A,AnCel7B and AnEGL,the activity of cellulase cocktail increased by 80%,70%,63%and 68%,***,the activity of cellulase cocktail was not improved after overexpression of AnBGL1 and *** mixed-strain fermentation with cellobiohydrolase recombinants(cel6 a,cel7a and cel7b recombinants)and endoglucanase recombinant(egl recombinant),the the activity of cellulase cocktail increased by 114%,102%and91%,respectively.

关键词： Marine Aspergillus niger Cellulase component Directed expression Salt-tolerance Cellulase activity

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老年脑梗死患者认知衰弱变化轨迹及影响因素

国际老年医学杂志 2025年第1期46卷 62-67页

作者：徐胜楠梁钦张莉刘时华安徽医科大学附属宿州医院神经内科宿州234000

目的分析老年脑梗死患者认知衰弱的变化轨迹,并探讨其认知衰弱变化轨迹的影响因素。方法选取2023年1月—9月在安徽医科大学附属宿州医院接受治疗的100例老年脑梗死患者作为研究对象。收集患者的临床资料,采用衰弱筛查量表和蒙特利尔认... 详细信息

目的分析老年脑梗死患者认知衰弱的变化轨迹,并探讨其认知衰弱变化轨迹的影响因素。方法选取2023年1月—9月在安徽医科大学附属宿州医院接受治疗的100例老年脑梗死患者作为研究对象。收集患者的临床资料,采用衰弱筛查量表和蒙特利尔认知评估问卷(MoCA)评估患者入院时、治疗后1个月、治疗后3个月、治疗后6个月的认知衰弱情况,将衰弱评分≥3分且MoCA4种均是老年脑梗死患者认知衰弱持续低水平发展成认知衰弱缓慢上升的危险因素(P4种均是老年脑梗死患者认知衰弱持续低水平进展成认知衰弱持续高水平的危险因素(P<0.05),自理能力高是老年脑梗死患者认知衰弱持续低水平进展成认知衰弱持续高水平的保护因素(P<0.05)。结论老年脑梗死患者认知衰弱变化可分为3种轨迹类型,且存在着群体异质性。

关键词：脑梗死认知衰弱变化轨迹影响因素

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Superior adsorption performance of graphitic carbon nitride nanosheets for both cationic and anionic heavy metals from wastewater

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Chinese Journal of Chemical Engineering 2019年第2期27卷 305-313页

作者： Gang Xiao Yaoqiang Wang shengnan xu Peifeng Li Chen Yang Yu Jin Qiufeng Sun Haijia Su State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering (BAIC-SM) Beijing University of Chemical Technology

Water pollution caused by highly toxic Cd(II), Pb(II), and Cr(VI) is a serious problem. In the present work,a green and low-cost adsorbent of g-C_3N_4 nanosheets was developed with superior capacity for both cationic and anionic heavy metals. The adsorbent was easily fabricated through one-step calcination of guanidine hydrochloride with thickness less than 1.6 nm and specific surface area of 111.2 m^2·g^(-1). Kinetic and isotherm studies suggest that the adsorption is an endothermic chemisorption process, occurring on the energetically heterogeneous surface based on a hybrid mechanism of multilayer and monolayer adsorption. The tri-s-triazine units and surface N-containing groups of g-C_3N_4 nanosheets are proposed to be responsible for the adsorption *** study on pH demonstrates that electrostatic interaction plays an important role. The maximum adsorption capacity of Cd(II), Pb(II), and Cr(VI) on g-C_3N_4 nanosheets is 123.205 mg·g^(-1), 136.571 mg·g^(-1),and 684.451 mg·g^(-1), respectively. The better adsorption performance of the adsorbent than that of the recently reported nanomaterials and low-cost adsorbents proves its great application potential in the removal of heavy metal contaminants from wastewater. The present paper developed a promising adsorbent which will certainly find applications in wastewater treatment and also provides guiding significance in designing adsorption processes.

关键词： g-C3N4 nanosheets Nanomaterials Adsorption Heavy metals Wastewater

Polymer microbottle with flexible tunability for ultrasensitive ultrasound sensing

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Science China(Physics,Mechanics & Astronomy) 2025年第3期68卷 124-130页

作者： Liaosha Kuang Jialve Sun shengnan Huangfu Tinglan Chen Zijing Cai Tian xu xuanyi Zhang Bo Ni Fangxing Zhang School of Physics and Technology Nantong UniversityNantong226019China Peking University Yangtze Delta Institute of Optoelectronics Nantong226010China State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing100871China School of Electronic Information Engineering Shanghai DianJi UniversityShanghai201306China

Optical whispering-gallery-mode microcavities have attracted significant attention for their potential in ultrasensitive ultrasound sensing,despite always relying on expensive tunable lasers in *** this study,we integrated an electrothermal tuning function inside the microcavity,enabling fast scanning of modes by applying voltages,which helps provide real-time searching and tracking of the optimal *** device demonstrated a quality factor exceeding 10^(6)with a broad tuning range over 33 *** structure achieved high sensitivity in ultrasound detection,with a noise equivalent pressure(NEP)of 3.35 m Pa/Hz^(1/2)at 20 *** further reported the advantages of the mode thermal broadening effect for ultrasound detection,with successfully obtaining high-contrast photoacoustic *** research introduces an innovative approach for cost-effective,high-stability ultrasound detection with microcavity,showing great value for application in photoacoustic imaging.

关键词： microbottle broad tuning range ultrasound detection photoacoustic imaging

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从唐前地理博物小说看神仙世界的演变

宗教学研究 2019年第1期 14-18页

作者：徐胜男东南大学艺术学院

神仙是唐前地理博物小说中的重要内容,从《山海经》到《十洲记》再到《博物志》,地理博物小说神仙世界的内核经历了从"巫"到"仙"再到"人"的演变。这种演变主要体现在小说对神仙环境、神仙人物、神异物产等内容表现方法及侧重点的不同上... 详细信息

神仙是唐前地理博物小说中的重要内容,从《山海经》到《十洲记》再到《博物志》,地理博物小说神仙世界的内核经历了从"巫"到"仙"再到"人"的演变。这种演变主要体现在小说对神仙环境、神仙人物、神异物产等内容表现方法及侧重点的不同上,这映衬出了不同时期仙道文化的差异,也展现了原始宗教向人文宗教的过渡。

关键词：地理博物小说神仙世界演变

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唐前志怪小说复活故事研究

南京师范大学文学院学报 2018年第2期 23-28页

作者：徐胜男南京师范大学文学院江苏南京210097

复活在《山海经》中以"变化"的形式出现,主要有复生与变换两种形式,是后世复活故事的源头。六朝志怪小说中复活多专指人死复生,以宗教叙事、爱情表达为主要内容,其中宗教叙事主要有宣佛的游历地狱故事、扬道的尸解复活以及法术复生故事... 详细信息

复活在《山海经》中以"变化"的形式出现,主要有复生与变换两种形式,是后世复活故事的源头。六朝志怪小说中复活多专指人死复生,以宗教叙事、爱情表达为主要内容,其中宗教叙事主要有宣佛的游历地狱故事、扬道的尸解复活以及法术复生故事等。以唐前志怪小说为先驱,复活故事在后世文学中逐渐形成了宗教、现实与爱情几大主题,并体现出与民族心理相契合的生命价值观与民族文化精神。

关键词：唐前志怪小说复活