一种用于可扩展路由器的报文结构设计

路由器的发展需要可扩展路由器体系结构。本文设计和买现了一种用干可扩展路由器的报文结构。新的报文结构在方便实现路由器模块化，提高报文访问性能，减少模块问内存拷贝，实现报文结构容错性等方面具有显著优势。     

热连轧精轧机组的板形最优控制

凸度和平坦度是板形控制的目标 ,也是对热连轧机工作辊的弯辊力进行设定和调整的基础。面向工业轧机 ,以板形方程为基础 ,研究提出了基于遗传算法的热连轧机板形最优控制。试验数据对比分析结果表明 ,使用该算法能够获得良好的板形 ,该控制算法是可行的     

Prediction of Microstructure and Mechanical Properties of Hot Rolled Steel Strip: Part I ‐ Description of Models

A metallurgical through‐process model is presented which describes the microstructural evolution and predicts the final mechanical properties of low carbon steel during hot strip rolling. Process models concern the thermal and deformation phenomena, which take into account the strain, strain rate and temperature distribution along the length of the strip. And the metallurgical models cover five modules, which are (i) austenitization of cast slab in reheating furnace, (ii) recrystallization of austenite in hot rolling, (iii) phase transformation of austenite‐ferrite in laminar cooling on the run‐out‐table, (iv) grain growth after coiling, and (v) final structure‐mechanical properties of products. Temperature is the main parameter and has dominant influence on the microstrutural evolution and the mechanical properties. The related temperature variation in hot strip rolling concerns air cooling, scaling, water cooling, heat transmission by roll contact, heat generation by deformation and friction. These complex factors are incorporated into the thermal models to simulate the temperature distribution along the length of the strip from the reheating furnace exit to the down‐coiler. A self‐learning algorithm is employed to improve the calculation accuracy and the computational temperatures are compared with the measured ones at typical locations. In the structure‐property relationships, two key process parameters (e.g., finishing exit temperature (FT7) and coiling temperature (CT)) are introduced in the model to consider the influence of morphology of microstructure on mechanical properties.     

喷丸与激光喷丸强化高强度钢对比试验

为了考察和对比喷丸(SP)和激光喷丸(LSP)2种表面强化技术对金属零件的强化效果,以30CrMnSiNi2A钢为试样,进行喷丸和激光喷丸强化处理试验。试验结果显示,2种强化试样的残余压应力和硬度都有较大的提高。分别测定了喷丸强化和激光喷丸强化试样在同一应力水平下的疲劳寿命,并运用扫描电镜分析了两者的疲劳断口。试验结果表明,激光喷丸强化试样中值疲劳寿命是喷丸强化试样的1.11~2.75倍,激光喷丸强化比喷丸强化在提高金属零件表面性能方面的效果更佳。     

虚拟仪器技术在雷达系统测试中的应用

分析了现代雷达系统对新一代雷达测试系统的要求,总结了虚拟仪器的发展、优势和关键技术,并对新一代雷达测试系统进行了展望.     

BODIPY在表面活性剂溶液中的荧光性质研究

合成了氟硼二吡咯亚甲基（BODIPY）黄绿色荧光染料,使用ESI-MS、1H NMR和13C NMR进行了结构表征,并测试了其在不同类型表面活性剂溶液中的荧光光谱性质.实验结果表明,十四烷基三甲基溴化铵（MTAB）对染料有显著的荧光增敏效应,这主要归因于BODIPY分子进入MTAB胶束中.BODIPY荧光强度和MTAB浓度在0-2.1＆#215;10-3 mol/L范围内呈良好的线性关系,检测限为1.56＆#215;10-6mol/L.     

离子液体环境下淀粉的酶法疏水化改性

本文作者采用脂肪酶Novozym 435在离子液体环境中对淀粉进行了月桂酸接枝改性,以提高其疏水性能。首先,对不同溶剂体系下的产物进行了取代度测试,并采用红外分析对产物的结构进行了表征,结果表明:在所选体系中,脂肪酶均能成功催化月桂酸与淀粉接枝,其中在离子液体中得到的产物取代度要高于其它体系。其次,对改性淀粉的性能进行了综合分析,改性后的淀粉其润湿接触角明显增大,疏水性提高,DSC测试结果表明改性淀粉耐热性能提高,糊化后淀粉的粘度和透光率都略有下降,SEM表明原淀粉的颗粒形态在改性过程中遭到了破坏,呈现出不规则的片状结构。     

残余应力研究现状及在镁合金中的应用前景

综述了残余应力研究现状；分析了残余应力产生的原因；总结了残余应力的各种测试手段和消除方法,并比较了它们的优缺点；展望了镁合金中残余应力的研究和发展方向.