定向进行

Effect of high vertical magnetic field on the directional solidification structure of eutectic MnBi/Bi has been investigated.

进行了纵向强磁场下MnBi/Bi共晶定向凝固实验研究，并从热力学的角度分析了强磁场对 MnBi/Bi共晶定向凝固组织的影响。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

To investigate feasibility and effect of schizophrenia treatment by stereotactic lesioning, CRW stereotactic apparatus and PICKER spiral CT were used to define nucleus location and RADONICS radiofrequency instruments were used to lesion different subnucleuses of amygdala and the front part of callosal gyrus.

采用CRW立体定向仪和PICKER螺旋CT定位，用RADONICS毁损仪毁损杏仁核不同亚核团和扣带回前部治疗精神分裂症 3 5例，并进行了一年的随访。以临床疗效总评量表评定疗效标准为指标，评定病人疗效，旨在探讨立体定向毁损杏仁核不同亚核团和扣带回治疗难治性精神分裂症的可行性和疗效。

Methods: On the basis of the stereotactic, 37 patients who suffered affective disorder with compulsions were treated by stereotactic technique combined with 3.0 T Magnetic Resonance, Nervousness Navigation System and Electric Impedance Methods with bilateral amygdaloid nuclei, anterior limb of internal capsule, callosal gyrus, nucleus accumbens septi lesion by radio-frequency thermocoagulation.

在立体定向基础上，应用3.0T高场强核磁共振、神经导航系统和微电极电生理技术进行核团定位，对37例以强迫症状为核心症状情感障碍患者行立体定向杏仁核、内囊前肢、扣带回、伏隔核多靶点联合毁损术。

By analyzing collinear equation and adopting absolute orientation method, the stereo pair of photos is relatively oriented.

通过解析共线条件方程式，利用相对定向直接法进行像对的相对定向。

Chicken IL-15(ChIL-15), Which was discovered in 2001, plays a main role in activating NK cells and CD8+ memory T cells, and may therefore have potential as a vaccine adjuvant.According to published ChIL-15 gene sequence, a pair of primers were designed and synthesized to clone ChIL-15 cDNA from ConA-activated chicken splenocytes by RT-PCR. Recombinant plasmid pUC19ChIL-15 carrying the ChIL-15 gene was constructed. The gene encoding mature ChIL-15 (mChIL-15) was amplified from pUC19ChIL-15 by PCR and cloned into pMD 18-T vector. After digested with Kpn I /Pst I , the mChIL-15 gene was subcloned into prokaryotic expression vector pPRoEX橦Ta and transformed into E.coli DH5a .The transformant was induced by IPTG, and the recombinant ChIL-15(rChIL-15) was expressed as a fusion protein with a histidine hexamer tag at the N-terminal end of the protein. Following expression, the protein was purified by ProBond?Nickel-Chelating Resin. The uninduced and induced protein lysates and the purified protein were separated by SDS-PAGE and transferred onto nitrocellulose membrane to identify rChIL-15 by Western blot. The rChIL-15 was used to immune the guinea pig to obtain rChIL-15 polyclonal antibody.

参考已发表的ChIL-15基因序列，设计合成引物，应用RT-PCR技术从刀豆球蛋白A活化的白来航鸡脾淋巴细胞中克隆ChIL-15 cDNA，将其与SmalⅠ酶切处理的pUC19载体连接，构建重组质粒pUC19ChIL-15；用PCR技术从pUC19ChIL-15中扩增出去信号肽的成熟ChIL-15(mChIL-15)基因，与pMD 18-T载体相连构建重组质粒pMDChIL-15；然后用KpnⅠ／PstⅠ双酶切下mChIL-15基因片段，定向亚克隆到经同样酶切处理的带有6个组氨酸标签的表达载体pP_RoEX~HTa中，构建重组质粒pP_RoChIL-15，对其测序确认读框正确后，转入大肠杆菌DH5α中诱导表达并进行纯化，用重组ChIL-15(rChIL-15)免疫豚鼠，制备多克隆抗体；再用HindⅢ／PstⅠ从质粒pP_RoChIL-15上切下mChIL-15基因，定向亚克隆到经同样酶切处理的杆状病毒转移载体pMelBacB中，经酶切、PCR和序列测定鉴定后，与杆状病毒线形化DNABac-N-Blue~(TM DNA共转染Sf9昆虫细胞，经三轮蚀斑纯化，构建重组杆状病毒rBac-ChIL-15，用该重组病毒感染处于对数生长期的Sf9细胞，按不同的时间收取样品，离心后对其上清和沉淀进行SDS-PAGE和Western blot分析。

Based on this requirement, this paper introduced steerable filters: generated a pair of even and odd filtered images by convoluting a quadrature pair of steerable filters with a source image, and then through continuously varying their phases over time, it gave the vision of an object in motion without changing its position. created the animation conveniently in this way.

基于这种需求，将定向滤波引入到非真实感动画中：利用一对正交的定向滤波核与源图像进行卷积运算，产生一对奇偶滤波图像，并通过不断改变其相位得到一系列运动的图像，使图像内的物体在实际位置并不发生改变的情况下，产生视觉上的动画效果，从而方便地生成非真实感动画。

Firstly, this thesis makes an introduces on the developement of PMSM servo system based on DSP. According to the control theory of AC PMSM servo system, this paper analyzes the coordinate transformation, the rotor magnetic field orientation and the current control strategy of AC servo system. The control strategy is i_d=0. The system is orientates towards rotor magnetic field. Then the mathmatic models of PMSM in d-q coordinate are set up.

本文首先对基于DSP的永磁同步电机伺服系统的发展概况进行了介绍；根据永磁同步交流伺服系统的基本控制理论，分析了交流伺服系统坐标变换原理、常用的磁场定向方式及电流控制策略，并给出i_d=0电流控制策略及永磁同步电机按转子磁场定向的控制方式，从而建立永磁同步电机d-q坐标系下的数学模型。

The past researches on the central reorienting were limited to the field of vision channel and cross-channel of vision and auditory, while in the field of auditory channel study, there are no relative published results.

首先，对其相关研究成果进行综述：(1)听觉IOR的理论模型：双过程模型和反应抑制理论；(2)听觉IOR的主要影响因素：空间关联、中央重新定向、刺激-反应计划方式和任务难度；其次，结合当前空间关联和中央重新定向两个影响因素的研究现状和存在问题，分别进行了两组实证研究。

In order to obtain better directional solidification microstructure, the whole directional solidification technique needing crucibles

为了获得更好的定向凝固组织，需要在超高温超高真空定向凝固设备上进行有坩埚的整体定向凝固。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。