基于模糊控制的ERF减振器设计

电流变流体是一种新型的智能材料,在本论文中,将其作为减振器的阻尼介质,设计了一种新型的ERF减振器,并针对这种ERF减振器,设计了相应的模糊控制算法,同时通过对其控制效果进行仿真试验,证实了该算法的可行性.     

大豆基因组GmRAV同源基因的生物信息学分析

利用Phytozome数据库、NCBI网站,和MEGA4.0、ClustalX软件对大豆（Glycine max）基因组中RAV同源基因进行了生物信息学分析,发现大豆RAV基因有4个拷贝,分别分布于第1、2、10和20号染色体上;RAV蛋白含有AP2/ERF（53～108）和B3（172～286）结构域。豆科植物大豆、东方山羊豆和苜蓿RAV蛋白亲缘关系较近。大豆的RAV基因4个拷贝中,Glyma01g22260与Glyma02g11060亲缘关系最近并且与苜蓿聚为一类,GmRAV和Gly-ma20g32730的亲缘关系也很近,并且与东方山羊豆聚为一类。推测大豆4个RAV拷贝在进化过程中功能上发生了较大的分化,在光周期抑制开花过程中可能发挥着重要作用。     

基于腐蚀缺陷管道的剩余强度评价标准应用

针对腐蚀缺陷管道剩余强度的评价问题,研究了ASME B31G标准、Rstreng标准、DNV RPF101标准及其算法,并对腐蚀缺陷管道的剩余强度进行了评价.计算了不同评价标准对于同一腐蚀缺陷的评价结果,评价了库鄯线原油管道和独乌线成品油管道中不同长度、深度的腐蚀缺陷,对评价结果及其变化情况进行对比分析.结果表明,对于同一腐蚀缺陷,不同评价标准所得到的管道剩余强度值之间存在差异,即各评价标准的保守性不同;不同评价标准适用于不同的腐蚀长度区间,且腐蚀缺陷尺寸的变化对不同评价标准所得到的管道剩余强度的影响程度不同.     

Development of Multicolor Flow Cytometry Calibration Standards: Assignment of Equivalent Reference Fluorophores (ERF) Unit

A procedure is described for assigning the number of equivalent reference fluorophores (ERF) values to microspheres labeled with a fluorophore designed to produce a fluorescence response in a given fluorescence channel of a multicolor flow cytometer. A fluorimeter was calibrated by a series of solutions of the reference fluorophores. The fluorimeter was used to obtain the microsphere fluorescence intensity, and a multicolor flow cytometer was used to obtain the microsphere concentration. The microsphere fluorescence intensity and the concentration were used to obtain the value of ERF for each model microsphere calibration standard. The procedure is described in detail only for microspheres with allophycocyanin (APC) immobilized on the surface. ERF values were also determined for microsphere calibrators for three other fluorescence channels: fluorescein isothiocyanate (FITC), phycoerythrin (PE), and Pacific Blue(PB). The four model microsphere calibrators provide a one point calibration for the four channels of a flow cytometer. By using software controls and changing the photomultiplier voltages, it is possible to obtain a multipoint calibration for each fluorescence channel using each microsphere calibrator.     

AP2/ERF转录因子调控果蔬采后病害的作用研究进展

果蔬在采后贮藏运输过程中易受到各种生理性病害和侵染性病害的胁迫,这些病害极大地缩短了各类水果和蔬菜的货架期。已有研究表明,AP2/ERF转录因子超家族在果蔬响应各种采后病害中起着重要作用,该家族转录因子可参与调控果蔬的生长发育,并对各类生物和非生物胁迫作出响应。为了明确AP2/ERF转录因子对果蔬采后生理性病害和侵染性病害的调控作用,本文对AP2/ERF转录因子及其在果蔬中的分布和数量进行了概述,并阐明了其响应果蔬采后生理性病害和侵染性病害的作用及机理,介绍AP2/ERF转录因子在香蕉、黄瓜、辣椒等果蔬中响应采后病害的研究进展,以期为研究其他果蔬中的AP2/ERF转录因子以及利用AP2/ERF转录因子增强采后果蔬对病害的抗性提供参考。     

致流变体材料的研究及其在军事领域的应用

致流变体是智能材料的一个重要分支,其构成有磁流变体(MR)和电流变体(ER).这种材料可以在外加场强(电场或磁场)作用下,在毫秒级时间内从牛顿流体变为剪切屈服应力较高的粘塑性体,且这种转变可控、连续、可逆,因此,它有着很广阔的应用前景.主要介绍了这种材料的组成、特性和本构关系,并综述了这种材料在军事领域的应用研究和发展前景.     

High-alumina cement production from FeNi-ERF slag, limestone and diasporic bauxite

In this paper the utilization of ferronickel electroreduction furnace (FeNi-ERF) slag for the production of high-alumina cement (HAC) is investigated through laboratory and pilot-scale tests. The process followed consisted of smelting reduction of slag mixtures with low-grade diasporic bauxite and limestone. In the laboratory-scale trials the main process parameters were defined, concerning raw material proportions, kinetics of the reductions and cooling rate of the product. The presence of a carbon-containing iron bath enhances FeO_x reduction from the slag. Products from laboratory tests developed satisfactory compressive strengths relative to those of commercial HAC. According to the results of the laboratory tests, pilot-scale heat treatments were carried out in a 5-t electric arc furnace (EAF) and about 4 t of final mixture were produced.     

电/磁流变技术在机械工程中的应用(下)

电／磁流变液（ERF／MRF）是在电／磁场作用下，其流变学性能可迅速响应，且易于控制的新型智能材料。基于电／磁流变技术的装置包括阻尼器、制动器、离合器、抛光装置和液压阀等，都有很大的潜在发展前景，有些已在汽车、健身设备和抛光机械等工程领域取得商品化应用。本文在分析电／磁流变液装置工作模式的基础上，对近十年来电／磁流变液装置以及这些装置在机械工程领域的应用进行了分类和全面综述，对其存在的问题及应用前景进行了展望。     

Robots with increased number of degree-of-freedom with single exciting force

This paper presents the results of the development and investigation of a new class of novel multi-degree-of-freedom robots based on a new concept – the application of kinematic pairs with alternating degree-of-freedom (DOF) controlled by a single force or moment, changing its direction in space. The number of DOF of the kinematic pairs is controlled periodically from 0 to 3, exploiting the dependence of frictional forces on the oscillation in the contact zone of links. The advantages of this new class of robots include significant weight reduction, simple design and control, and specific applications in space robotics and soft robotic spines. In more complicated cases of trunk robots, elastic kinematic pairs are used with a number of DOF controlled by electro- or magneto-rheological fluids with viscosities that change as a result of applied electric or magnetic fields. Expressions for the generalized inertia matrix of the robots with a large number of joints have been derived using the computer algebra technique with the subsequent automatic program code generation. As shown in this paper, such an application could drastically reduce the number of floating point product operations for an efficient numerical simulation of robots.