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武汉天兴洲公铁两用斜拉桥主梁和桥塔纵向列车制动响应智能控制的理论与关键技术

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土木工程学报 2010年第8期43卷 63-72页

作者：瞿伟廉秦顺全涂建维刘嘉周强武汉理工大学湖北武汉430070 中铁大桥局股份有限公司湖北武汉430050

研究MR阻尼器对武汉天兴洲公铁两用斜拉桥主梁纵向列车制动响应智能控制的理论与应用的关键技术,此技术已获取多个国家发明专利授权。文中在获取列车制动引起的天兴洲大桥主梁节点上的作用力时程的基础上,建立了MR阻尼器对漂浮型铁路斜... 详细信息

研究MR阻尼器对武汉天兴洲公铁两用斜拉桥主梁纵向列车制动响应智能控制的理论与应用的关键技术,此技术已获取多个国家发明专利授权。文中在获取列车制动引起的天兴洲大桥主梁节点上的作用力时程的基础上,建立了MR阻尼器对漂浮型铁路斜拉桥主梁和桥塔纵向列车制动响应智能控制的基本方程和仿真分析方法,提出效果明显优于"被动-开"控制的改进的固定增量半主动控制策略。与此同时,对天兴洲大桥应用的目前世界上出力最大的500kN磁流变液阻尼器的稳定性、耐磨损寿命要求、设计制作的关键技术以及性能试验进行了研究。并在正确识别500kN磁流变液阻尼器参数的基础上,对武汉天兴洲公铁两用斜拉桥主梁纵向列车制动响应的智能控制进行仿真设计。结果表明,MR阻尼器的智能控制能有效地抑制天兴洲大桥主梁和桥塔的纵向列车制动响应,以保证大桥的安全和正常使用。

关键词：天兴洲公铁两用斜拉桥列车制动智能控制 MR阻尼器

The Oxidative regulation of Ion Channels

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The Oxidative regulation of Ion Channels

第十五届国际药理学大会

作者： Jianguo Chen Fang Wang Lihong Long You Jin. Department of Pharmacology Tongji Medical college Huazhong university of Science and technology {3. 43.03. china

＜正＞ In this study, we investigated the redox-induced regulation of ion channels using different models. With combination of patch-clamp techniques and adenovirus -mediated NOS gene expression, we compared the different effects between NO and H2O2, NO and NOS on P/Q- type Ca2 + channel expressed in BHK cells. The results showed that NO can enhance the Ca2 + currents by direct oxidation of cysteine in ion channel proteins. The increased intracellular Ca2 + can activate NOS, and then produces NO, which may form a positive feedback loop to regulate neurotransmitter release. Meanwhile,β1 subunit can facilitate the methionine-specific oxidant Ch- T induced up-regulation of BK channel. The M117 in β1 subunit are critical for this facilitation of redoxinduced ion channel regulation. In conclusion, ROS may play a role in modifying ion channel functions via redox of amino acids. The enzyme-controlled oxidative-reductive reaction of amino acids may be one of important mechanisms for anti-oxidation in the body.

关键词： ROS Ca2+ channel BK channel

Low-dose-fractionated irradiation attenuates astrogliosis-mediated inhibition of axonal regeneration and facilitates recovery of motor function after spinal cord hemi-section in Beagle dogs

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Low-dose-fractionated irradiation attenuates astrogliosis-me...

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Qiang ZHANG~(**),Dai-Shi TIAN~(**),Wei WANG~* Department of Neurology,Tongji Hospital,Tongji Medical college,Huazhong university of Science and technology, {3. 43.03.,china

＜正＞Axonal regeneration after spinal cord injury is limited mainly due to the presence of an inhibitory environment,especially reactive astrogliosis and glial scar *** this inhibitory barrier of reactive astrocytes and inhibitory substances making the microenvironment of the damaged neurons permissive for axonal regrowth might be crucial for CNS *** the present study,we aimed to investigate whether low-dose-fractionated irradiation,which is currently being used widely for clinical treatment of several tumor types,could regulate cell cycle elements of reactive astrocytes just like its use in cancers,inhibit glial scar formation,attenuate astrogliosis-mediated inhibition of axonal regeneration and facilitate recovery of motor function after spinal cord hemi-section in Beagle *** expected,our results demonstrated that low-dose-fractionated irradiation reduced reactive astrogliosis, attenuated astrogliosis-associated neural injuries,ameliorated microenvironment of axonal regeneration,and benefited recovery of the animals subjected to cord ***,irradiation might be a promising therapeutic strategy targeting at excessive astrogliosis for SCI in the near future.

关键词： irradiation astrogliosis axonal regeneration spinal cord hemisection Beagle dogs

Analysis of Interf acial Zone Properties and Permeability of Concrete in Underground Structure

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Journal of wuhan university of technology(Materials Science) 2006年第Z1期21卷 31-34页

作者：马保国 Key Laboratory for Silicate Materials Science Engineering (Ministry of Education) wuhan university of technology Wuhan 430070 China

Chloride diffusion coefficient and water penetration depth of 3.types concrete were studied. The experimental results show that the concrete permeability decreases itself in the order as follow: pure portland cement concrete(CO), concrete added with fly ash(C1), concrete added with both fly ash and silica fume(C2). SEM and microhardness analyses show that the properties of interfacial zone are significantly influenced by silica fume. With the improvement of interfacial zone properties, the permeability especially the Chloride ion diffusivity of concrete significantly decreases.

关键词： underground structure water permeability ionic diffusivity Interfacial zone Properties

Fluctuation-induced transport in a spatially symmetric periodic potential

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Fluctuation-induced transport in a spatially symmetric perio...

作者： Li Cao~(1,2) and Da-jin Wu~(2,3. ~1State Key Laboratory of Laser technology. Huazhong university of Science and technology. {3. 43.074. china ~2CCAST (World Laboratory). P.O. Box 873.. Beijing 100080. china ~3.epartment of physics. Huazhong university of Science and technology. {3. 43.074. china

We present an analytical investigation of the fluctuation-induced transport of Brownian particles in a deterministic spatial symmetrical periodic potential subject to Gaussian noises. We found that directed motion of the Brownian particles can be induced by the correlation between a multiplicative white noise and an additive white noise. The direction of current is determined by the sign of the noise correlation.

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Mobile HTc SQUID MCG Measurement System

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Mobile HTc SQUID MCG Measurement System

2011 IEEE International Conference on Information Theory and Information Security(ICITIS 2011)

作者： Tao Wei 1) 2) Gao Jun 1) Zhang Fan 3. Cai Wenyan 4) Deng Peng 4) 1) Electronic college of Engineering Naval university of Engineering wuhan {3. 2) Naval Academy of Armament Beijing {3. 3. New Star Institute of Applied technology Hefei {3. 4) State Key Laboratory for Artificial Microstructure and Mesoscopic physics Peking university Beijing {3.

With system integration technology,a commercial high-temperature superconducting SQUID magnetometer,a commercial Fiberglass-Reinforced Plastics （FRP） nonmagnetic liquid nitrogen container,and a commercial data acquisition system were constructed and installed on a stainless steel cart to form a simple and inexpensive mobile MCG *** this system,MCG measurements were successfully implemented in un-shield environment.

关键词： mobile HTc SQUID MCG measurement un-shield environments

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辛亥革命对中德关系的影响

武汉大学学报（人文科学版） 2001年第5期54卷 591-597页

作者：肖建东武汉理工大学人文社会科学系湖北武汉430063

辛亥革命促进了中国外交近代化的进程 ,其间中德关系的发展就是一个典型。辛亥革命大大冲击了德国的侵华权益 ,也在客观上促使中德关系走向稳定与互利 ,而辛亥革命的基本精神又促使中德关系最终走向平等。

关键词：辛亥革命中德关系中国德国外交关系

H∞ Control for Uncertain Discrete Fuzzy System with Both State and Input Delays

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H∞ Control for Uncertain Discrete Fuzzy System with Both St...

第二十七届中国控制会议

作者： Pan Juntao1,Wang Renming1,Tian Dong2 1.college of Electrical Engineering and Information technology,china Three Gorges {3.,Yichang 443.02,P.R.china 2.wuhan {3. of Science and technology,wuhan 43.081,P.R.china

In this paper,a new approach to H controller design for a class of uncertain discrete T-S fuzzy systems are proposed. According to the Lyapunov stability theory as well as parallel distributed compensation(PDC) ,several sufficient conditions for stabilization of considered systems are *** design procedure based on LMI for the fuzzy robust controller is given,which guarantee the closed-loop system is asymptotically stable and the effect of disturbance input on the controlled output is reduced to a prescribed *** simulation results show the proposed method is effective.

关键词： H∞ control T-S fuzzy systems Time-delays Uncertain

Hard X-ray lags of Cygnus X-1 on short timescales

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Science china(physics,Mechanics & Astronomy) 2010年第S1期53卷 150-152页

作者： JIN Jing1,LU Yu2,3.QU JinLu2 & LI TiPei1,2 1 Department of Engineering physics & Center for Astrophysics,Tsinghua university,Beijing 100084,{3. 2 Key Laboratory of Particle Astrophysics,Institute of High Energy physics,Chinese Academy of Sciences,Beijing 100049,{3. 3.Graduate university of Chinese Academy of Sciences,Beijing 100049,{3. Department of Engineering physics & Center for Astrophysics Tsinghua University Beijing China Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing China Graduate university of Chinese Academy of Sciences Beijing China

Calculating the time lags over different timescales using the cross-correlation technique may lead to a biased estimate of small *** a timescale for lightcurve binning,we propose to subtract the local average instead of the global average during the cross-correlation,in order to filter variations on timescales larger than the bin *** new method allows us to make an unbiased estimate of the time lags using RXTE/PCA data on timescales as small as-5 ms,where the Fourier technique becomes *** calculate the time lag spectra of Cygnus X-1 at different spectral states with the new method,and find that the source appears to have similar X-ray lags on small timescales independent of its spectral states.

关键词： spectral lags Cygnus X-1 data analysis