马铃薯组织培养技术研究

以马铃薯茎尖、茎段和芽体3种不同外植体为材料，用浓度为1．0mg／L的NAA与不同浓度的2，4-D组合诱导愈伤组织；用浓度为0．2mg／L的NAA和不同浓度的BA组合诱导不定芽。试验结果表明：NAA1．0mg／L 2，4-D1．5mg／L最适于愈伤组织的诱导，NAA0．2mg／L BA0．3ms／L最适于不定芽的诱导；NAA对马铃薯根的分化有促进作用。     

经济特区要成为走新型工业化道路的示范区--新历史条件下经济特区发展思考

走新型工业化道路是我国全面建设小康社会的必由之路.经济特区工业化既不是走发达国家从轻工业起步的老路,也不是沿袭我国早期优先发展重工业的模式,而是走一条以市场为导向的外向型工业化道路.经济特区工业化由低向高,由劳动密集型向资金、技术、知识密集型发展.同时,要注意处理高新技术产业与传统产业,工业化与农业现代化、农村城市化以及经济发展与社会进步、环境保护的关系,发扬求真务实的作风,坚持科学的发展观,为我国走新型工业化道路做出示范和提供有益的启示.     

TMS320C5402 DSP中断资源及其应用

TMS320C5402是美国TI公司推出的TMS320系列中新一代定点数字信号处理器。它以独有的高性能、低功耗及低价位等优势,一经推出便受到业界人士的青睐。该文介绍了该芯片的中断资源,并以定时器中断为例对TMS320C5402中断的实现方法进行了说明,给出了汇编源程序代码。     

利用VB实现图片切换动画中的溶解效果

更动感的程序界面,更强烈的视觉冲击始终是程序开发人员在进行应用程序开发时的不懈追求,通过构造随机覆盖模板和使用Win32API中的BitBlt函数及VB中的时钟控件,以实现切换动画中的溶解效果,从而为使用VB进行程序开发时创建动画界面进行了一次初步的尝试。     

继续教育:福建经济发展的有效支点

继续教育已成为经济发展的有效支点。福建继续教育存在着力量不强,队伍不稳,管理水平不太高,经费投入不足,企业继续教育工作较薄弱等问题。通过福建与浙江两省有关数据的比较,指出福建发展继续教育的紧迫性,提出完善福建继续教育,充分发挥继续教育对教育成果的快速转化功能,突出教学、科研、生产一体化等相关对策。     

Robot Calibration Using Active Vision-based Measurement

This paper presents an efficient robot calibration method with non-contact vision metrology. Using the coplanar pattern to calibrate camera made the active-vision-based end-effector pose measurement be a feasible and cost-effective way. Kinematic parameter errors were linearized and identified through two-step procedure, thus the singular and non-linear condition was overcome. These errors were then compensated using inverse model method. The whole calibration process is flexible, easy to implement and prevents the error propagation from the earlier stages to the later ones. Calibration was performed on MOTOMAN SV3 industrial robot. Experiment results show that the proposed method is easy to setup and with satisfactory accuracy.     

Switched Capacitor Network Analysis by Means of TCM

The totally coded method (TCM) reveals the same objective law, which governs the gain calculating for signal flow graph as Mason formula does. This algorithm is carried out merely in the domain of code operation. Based on pure code algorithm, it is more efficient because figure searching is no longer necessary. The code-series (CS), which are organized from node association table, have the holoinformation nature, so that both the content and the sign of each gain-term can be determined via the coded method. The principle of this method is obvious and it is suited for computer programming. The capability of the computeraided analysis for Switched Capacitor (SCN) can be enhanced.     

Meshing Theoretical Study and Simulation on Cylindrical Tri-sine Oscillating Tooth Gear Drive

The structure of cylindrical tri-sine oscillating tooth gear drive is presented. Based on the space meshing theory, equations of meshing and tooth profile are established and its meshing theory is studied. Using Pro/E, this system is modeled and simulated,which is compared with the above-established equations.     

Kinetics of Chlorine Decay in Water Distribution Systems

A combined first and second-order model, which includes bulk decay and wall decay, was developed to describe chlorine decay in water distribution systems. In the model the bulk decay has complex relationships with total organic carbon (TOC), the initial chlorine concentration and the temperature. Except for the initial stages they can be simplified into a linear increase with TOC, a linear decrease with initial chlorine concentration and an exponential relationship with the temperature. The model also explains why chlorine decays rapidly in the initial stages. The parameters of model are determined by deriving the best fitness with experimental data. And the accuracy of model has been verified by using the experimental data and the monitoring data in a distribution system.     

Development of Diamond-like Carbon Fibre Wheel

Introduction Diamond likecarbon(DLC)coatingshavebeen increasinglyappliedtomechanicalcomponentsandpartsduetotheirveryattractivemechanical,chemical, physical,electricalandopticalpropertiessuchashighdegreeofhardness,extremelylowfrictionalcoefficient, highwear resistance,highthermalconductivity,highmodulus,chemicalinertnessandlowdeposition temperature[1].AsshowninFig.1,DLCismadeofcarbon andhydrogenanditsstructureisamorphousorquasi amorphous,whereasdiamondandgraphitearemadeof carbonbuttheirstru…