四川省电子学会广电专委会赴（美国）2006NAB暨加州专业考察情况介绍

以四川省电子学会常务理事、广电专委会主任委员张兆安为团长、专委会副主任委员王强为副团长的四川省电子学会赴（美国）2006NAB暨加州专业考察团于4月19日至5月3日在美国旧金山、洛杉矾、拉斯唯加斯、香港进行了以“电子媒体”为主题的专业考察。成员有四川省电子学会副理事长唐程山副教授，广电专委会委员崔荣总经理、高岩总经理、严涌恩总经理，四川广播电台技术部王仁华主任和深圳电视台张培仕工程师。由《世界广播电视》系列杂志总编潭民望教授任顾问兼翻译。     

树立以人为本理念 筑宾科学发展之基

以人为本是科学发展观的根本和核心。黄壁庄水库管理局充分认识到．从大的方面讲。坚持以人为本．就是作为关系千百万人民生命财产安全的大型水库的管理者．必须始终把水库工程安全运行放在首位．把发展的成果和水库的巨大效益惠及广大人民群众．最大程度地满足人民群众对水的需求．创造稳定的环境．增强人民群众的稳定感．从本单位的角度看．坚持以人为本就是要把水库管理者——广大干部职工作为发展的主体．努力调动干部职工的积极性、主动性、创造性，更加注重职工素质的提高和生活水平的提高．增强广大干部职工管理水库的责任感和使命感．为水库的可持续发展增添后劲。     

张坊水源应急供水工程简介

1 工程目的 自1998年以来，连续5a干旱，北京市被严重的缺水所困扰，为缓解水资源紧张状况，北京市水务局决定实施张坊工程。2003年5月14日，市计委下发《关于批准张坊水源应急供水工程项目建议书（代可行性研究报告）的函》（京计基础[2003]732号）；同年12月31日，市规委下发《关于张坊水源应急供水工程初步设计批复》（市规发1-2003]1767号），审批通过该工程。     

Lymphatic transport in rats of interesterified oils containing conjugated linoleic acids

In this study we examined the lymphatic transport in rats of FA after administration of interesterified oils containing CLA, with emphasis on the location of CLA and octanoic acid in the TAG. The oils were produced by enzymatic interesterification. Eight oils with different structures or FA profiles were examined in this study: MCM, CMC, OCO, and COC, where M was expected to be octanoic acid and O oleic acid. In group 1, C was CLA as a mixture of the two CLA isomers c9, t11 or t10, c12, and in group 2, C was mainly the isomer t10, c12. Rats were subjected to cannulation of the mesenteric lymph duct, and the following day they were intragastrically administered one of the oils and lymph samples were collected for 24 h. The lymphatic transport of total FA from 0 to 8 h in group 1 was significantly (P < 0.05) higher for the OCO-1 and the COC-1 oils than for the CMC-1 oil. Similarly, in group 2 the transport was higher for the OCO-2 oil than for the CMC-2 oil. The recovery of both of the CLA isomers examined was similar (50-70%) and independent of the isomer, oil structure, and FA profile, whereas more octanoic acid was recovered from the CMC oils than from the MCM oils. The results indicated that the FA profiles and the position of octanoic acid had only a minor influence on the absorption of CLA.     

A novel cyclodextrin-derived tellurium compound with glutathione peroxidase activity

A novel dicyclodextrinyl ditelluride (2-TeCD) compound was devised as a functional mimic of the glutathione peroxidase (GPX) enzymes that normally remove hydroperoxides from the cell. The GPX activity of the mimic was found to be 46.7 U microM(-1), which is 46 times as active as Ebselen, a well-known GPX mimic. A detailed steady-state kinetic study was undertaken to probe the reason for the high catalytic efficiency of 2-TeCD. This high efficiency can be explained based on both the binding of the substrate to the cyclodextrin and the catalytic mechanism of 2-TeCD, which is different from that of diselenide compounds. 2-TeCD exhibits good water solubility and is chemically and biologically stable. The biological effect of 2-TeCD was evaluated by its ability to protect mitochondria from oxidative damage. 2-TeCD exhibited excellent antioxidant capacity in comparison with Ebselen.     

Neural network-based adaptive decentralized learning control for interconnected systems with input constraints

In this paper, the neural network-based adaptive decentralized learning control is investigated for nonlinear interconnected systems with input constraints. Because the decentralized control of interconnected systems is related to the optimal control of each isolated subsystem, the decentralized control strategy can be established by a series of optimal control policies. A novel policy iteration algorithm is presented to solve the Hamilton–Jacobi–Bellman equation related to the optimal control problem. This algorithm is implemented under the actor-critic structure where both neural networks are simultaneously updated to approximate the optimal control policy and the optimal cost function, respectively. The additional stabilizing term is introduced and an improved weight updating law is derived, which relaxes the requirement of initial admissible control policy. Besides, the input constraints of interconnected systems are taken into account and the Hamilton–Jacobi–Bellman equation is solved in the presence of input constraints. The interconnected system states and the weight approximation errors of two neural networks are proven to be uniformly ultimately bounded by utilizing Lyapunov theory. Finally, the effectiveness of the proposed decentralized learning control method is verified by simulation results.     

Spectrocolorimetric and microscopic techniques for the evaluation of plasticized PVC cleaning: a case study applicable to three-dimensional objects at museums

For the validation of a cleaning method in conservation, the examination of the object's surface after the cleaning and the quantification of the cleaning efficiency are significant steps. In this study, several cleaning solutions were tested on a plasticized poly(vinyl chloride) object whose surface was characterized before and after cleaning by optical microscopy and noncontact profilometry. In addition, different methods to quantify the cleaning efficiency based on spectrocolorimetric and microscopic techniques were provided. The results showed that noncontact profilometry supported by optical microscopy and spectrocolorimetry was very useful for the characterization of the plasticized poly(vinyl chloride) surface before and after the cleaning and also for the determination of the cleaners' efficiency.     

A versatile facility for laboratory studies of viscoelastic and poroelastic behaviour of rocks

Novel laboratory equipment has been modified to allow both torsional and flexural oscillation measurements at sub-microstrain amplitudes, thereby providing seismic-frequency constraints on both the shear and compressional wave properties of cylindrical rock specimens within the linear regime. The new flexural mode capability has been tested on experimental assemblies containing fused silica control specimens. Close consistency between the experimental data and the results of numerical modelling with both finite-difference and finite-element methods demonstrates the viability of the new technique. The capability to perform such measurements under conditions of independently controlled confining and pore-fluid pressure, with emerging strategies for distinguishing between local (squirt) and global (specimen-wide) fluid flow, will have particular application to the study of frequency-dependent seismic properties expected of cracked and fluid-saturated rocks of the Earth's upper crust.     

发挥创意．尽情享受——会声会影11

在DV及手机视频逐渐流行的今天,各种有趣的视频受到大家的喜爱。很多人也尝试自己制作视频并予以发表,更多的则是录制美好的经历保存下来不时回味纪念。不过视频制作比之图像处理还要繁琐,需要强大的工具软件才能制作满意的剪辑。会声会影系列一直是优秀的个人视频编辑工具,适用于普通的视频编辑,没有专业软件的复杂难用,却能接近专业软件的效果。