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Optimization of silicon-on-insulator based optical switch using tapered waveguides

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Optoelectronics Letters 2007年第5期3卷 326-328页

作者： LI Zhi-yong CHEN Shao-wu YU jin-zhong State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China

Optimized 2×2 switches based on silicon-on-insulator (SOI) were demonstrated. In the design, single mode rib waveguidesand multimode interferences (MMIs) are connected by tapered waveguides to reduce the mode coupling loss between thetwo types of waveguides. The average insertion loss of the switches is about -16.9 dB and the excess loss of one is measuredof -1.3 dB. The worst crosstalk is larger than 25 dB. Experimental results indicate that some of the main characteristics ofoptical switches are improved in the modified design, which is according with theoretic analysis. The novel design can beused to improve the characteristics of optical switch matrixes based on 2×2 switch units.

关键词：光学开关集成电路波导绝缘体

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中山市汽车流动图书馆用户满意度调查研究

图书馆论坛 2011年第4期31卷 82-84页

作者：吴金仲广东药学院图书馆中山分馆广东中山528458

主要采用问卷调查法对中山市汽车流动图书馆的18个服务点进行用户满意度调查研究,结果表明:用户对"服务影响"维度评分最高,"资源利用"维度评分最低。总结出汽车流动图书馆存在的问题,并提出针对性的对策。

关键词：汽车流动图书馆用户满意度问卷调查

危险货物道路运输安全监管体系问题分析及对策研究

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公路交通科技 2015年第12期32卷 1-5,23页

作者：吴金中交通运输部公路科学研究院北京100088

结合近年来危险货物道路运输典型事故,分析了我国危险货物道路运输相关法律法规体系、监管机制、应急救援体系等方面存在的主要问题;借鉴国外相关经验,从制订完善通用法规、探索成立专业化监管部门、建设危险货物运输安全监管基础信息... 详细信息

结合近年来危险货物道路运输典型事故,分析了我国危险货物道路运输相关法律法规体系、监管机制、应急救援体系等方面存在的主要问题;借鉴国外相关经验,从制订完善通用法规、探索成立专业化监管部门、建设危险货物运输安全监管基础信息系统、健全危险货物道路运输应急救援装备体系与应急队伍等方面提出了相关对策。

关键词：运输经济危险货物道路运输法律法规体系监管机制应急救援体系

Efficacy and Safety of Tripterygium wilfordii Hook F Versus Acitretin in Moderate to Severe Psoriasis Vulgaris：A Randomized Clinical Trial

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Chinese Medical Journal 2015年第4期128卷 443-449页

作者： Chao wu Hong-zhong jin Dan Shu Feng Li Chun-Xia He Ju Qiao Xiao-Ling Yu Department of Dermatology Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China

Background：Few clinical trials have evaluated the efficacy and safety of Tripterygium wilfordii Hook F （TwHF） compared with acitretin in *** aimed to compare the efficacy and safety of TwHF compared with acitretin in the treatment of moderate to severe psoriasis ***：Adults with Psoriasis Area Severity Index （PASI） score ＞ 10 and psoriasis-affected body surface area ＞ 10％ were randomized into a TwHF （20 mg,3 times a day） or acitretin group （30 mg,once a day）.The treatment course lasted for 8 *** were assessed at baseline and at 2,4,and 8 *** tests were performed at baseline,week 4,and week *** data were analyzed using paired samples t-test or analysis of variance （ANOVA）.Results：A total of 115 patients was enrolled （58 TwHF; 57 acitretin）.The median PASI score improved in the TwHF group by 50.4％ and in the acitretin group by 42.7％.There was no significant difference in median PASI improvement between two groups at 2,4,and 8 *** was also no significant difference in PASI 25,PASI 50,PASI 75,and PASI 90 response between the two groups at 2,4,and 8 *** was a significant increase in the level of aspartate transaminase and triglycerides in the TwHF group （P =0.026 and P =0.011,respectively）.In the acitretin group,there was a significant increase in the level of alanine transaminase,cholesterol,and high-density lipoprotein （P =0.030,P ＜ 0.01,and P ＜ 0.01,respectively）.Conclusions：There was no significant difference in treatment efficacy between the TwHF and acitretin groups within 8 weeks,but there were fewer treatment-related adverse events in the TwHF group.

关键词： Acitretin Psoriasis Tripterygium wilfordii Hook F

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从发展观的角度探讨成人教育发展

成人教育 2008年第12期28卷 9-10页

作者：吴忠金中山火炬职业技术学院继续教育处广东中山528436

不同时期有不同的发展观。发展观规范着成人教育发展,成人教育发展是发展观的发展体现。在对发展观进行历史检视的基础上,进而分析发展观与成人教育发展的关系,从发展观的角度即从发展指导思想、发展目的和发展动力方面对成人教育发展... 详细信息

不同时期有不同的发展观。发展观规范着成人教育发展,成人教育发展是发展观的发展体现。在对发展观进行历史检视的基础上,进而分析发展观与成人教育发展的关系,从发展观的角度即从发展指导思想、发展目的和发展动力方面对成人教育发展本质进行反思。

关键词：发展发展观成人教育成人教育发展

Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu jing wu Guang Yin Fan‑Zhen Jiao zhong‑Zhen Yu jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

Antioxidant and hepatoprotective activities of the ultrasonic-circulating extract powder from Ganoderma lucidum

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Antioxidant and hepatoprotective activities of the ultrasoni...

中国菌物学会2016年学术年会

作者： Chen Ti-Qiang Kan Yong-Jun Yang Chi wu Jian-Guo wu jin-zhong Wong Ka-Hing Institute of Edible and Medicinal Fungi Fujian Academy of Agricultural Sciences National and Local Joint Engineering Research Center for Breeding & Cultivation of Featured Edible Fungi Fujian University of Traditional Chinese Medicine Department of Applied Biology and Chemical Technology Hong Kong Polytechnic University

Ganoderma lucidum（***） is a medicinal mushroom that has been widely used in traditional Chinese medicine for over 2000 years and is popularly accepted as dietary supplement in Western countries [1].There is mounting evidence of antioxidant properties of polysaccharides and/or triterpenoids from *** [2-4].The aim of this study was to compare the antioxidant activities and active ingredients in ultrasonic-circulating extract powder（UCEP） with hot-water extract powder（HWEP） of log-cultivated *** DPPH,ABTS,O2-,T-AOA,FRAP assay results showed the UCEP exhibited stronger antioxidant activity in vitro than the ***,the detection of GSH,SOD,MDA in rat liver,ALT,AST,LDH in rat blood,and western blot for antioxidant proteins of TGF-β1,HO-1 and GSH-Px showed that the UCEP had either similar or a little stronger antioxidant activity in vivo when compared with the *** analysis of the active ingredients revealed the UCEP and HWEP had the similar average yields and content of total triterpenoids（TTs）,but the former had significant higher（P＜0.05） average yield and content of total polysaccharides（GLPs） than the *** suggested the potential use of UCEP as an antioxidant and liver protectant.

关键词： Ganoderma lucidum ultrasonic-circulating extraction antioxidant activity hepatoprotective activities polysaccharide

来源： cnki会议评论

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危险货物道路运输风险评价体系研究

公路交通科技 2015年第12期32卷 6-11页

作者：吴金中范文姬交通运输部公路科学研究院北京100088

从危险货物风险、车辆设备风险、人员风险、运输线路风险、其他风险等5方面,全面分析了危险货物道路运输风险的主要影响因素,建立了危险货物道路运输风险评价指标体系。应用模糊综合评价法建立了风险评价模型,并以某大型危险货物道路运... 详细信息

从危险货物风险、车辆设备风险、人员风险、运输线路风险、其他风险等5方面,全面分析了危险货物道路运输风险的主要影响因素,建立了危险货物道路运输风险评价指标体系。应用模糊综合评价法建立了风险评价模型,并以某大型危险货物道路运输企业为例,进行了实证分析。结果表明:该评价体系能够较全面地涵盖危险货物道路运输企业风险点,评价方法能真实反映企业的安全管理薄弱点。

关键词：运输经济危险货物道路运输风险评价模糊综合评价法风险评价指标安全管理

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跌落/冲击过程中印刷电路板的有限元模拟

科学技术与工程 2018年第6期18卷 234-238页

作者：郑菲吴金忠辽宁科技大学机械工程与自动化学院鞍山114051

封装的可靠性是保证器件稳定,且发挥正常功能的重要性能。建立了PCB板及封装件的三维有限元分析模型,采用Input-G方法模拟封装整个跌落过程,计算PCB板的动力学响应,研究了影响跌落实验的各个参数。将Input-G简化模型与带焊点的模型模拟... 详细信息

封装的可靠性是保证器件稳定,且发挥正常功能的重要性能。建立了PCB板及封装件的三维有限元分析模型,采用Input-G方法模拟封装整个跌落过程,计算PCB板的动力学响应,研究了影响跌落实验的各个参数。将Input-G简化模型与带焊点的模型模拟结果进行对比分析,模拟分析表明Input-G简化模型可以大大节约计算时间,提高工作效率。对于PCB板而言,利用Input-G简化模型来研究其上的动力学响应是可行的。

关键词： PCB板跌落试验电子封装有限元