极体

In dual Brunn-Minkowski theory, we study the properties of the dual harmonic quer-massintegrals systematically and establish some inequalities for the dual harmonic quer-massintegrals, such as the Minkowski inequality, the Brunn-Minkowski inequality, the Blaschke-Santalo inequality and the Bieberbach inequality. We establish the dual Brunn-Minkowski inequality for dual affine quermassintegrals. Recently we learned that Gardner have independently proved it by a different method. The polar body of a convex body is an important object in the context of convex geometry. Hence, after we studied the intersection bodies, it is natural to consider the inequalities for their polar bodies.

在对偶Brunn-Minkowski理论中，我们引入了对偶调和均质积分概念，系统的研究了它的性质，并建立对偶调和均质积分的Brunn-Minkowski不等式，Blaschke-Santalo型不等式和Bieberbach不等式；接着我们建立了对偶仿射均质积分的对偶Brunn-Minkowski不等式，最近我们得知这个不等式被Gardner用另外的方式证明；凸体的极体是凸几何中一个重要概(来源：2525ABf8C论文网www.abclunwen.com)念，既然相交体和投影体有对偶关系，因此在研究完投影体的极体之后自然要研究相交体的极体。

As illustrated by the cross-hatching, the center-most PDL 605 has one nearest neighbor PDS 610 located above it and one nearest neighbor PDS 610 located below it along a vertical dimension.

如交叉区块所描绘者，最中间的光电二极体PDL 605有一个最靠近的光电二极体PDS 610 位於其上方以及一个最靠近的光电二极体PDS 610位於其下方。

As indicated by the cross-hatching in Figure 6B, the center-most PDL has one nearest neighbor PDS above it along the vertical dimension, one nearest neighbor PDS below it along the vertical dimension, one nearest neighbor PDS to the right in the horizontal dimension, and one to the left along the horizontal dimension.

如图六B中交叉区块所描绘者，最中间的光电二极体PDL部位的垂直方向上有一最靠近的光电二极体PDS部位位於其上方，一个最靠近的光电二极体PDS部位位於其下方，以及一个最靠近的光电二极体PDS部位位於水平方向上的左方，一个最靠近的光电二极体PDS部位位於水平方向上的右方。

The objective of the thesis is to present newly developed AC driver and protection circuits for light emitting diode. The LED modules for each upper and low arm are with pulse-width modulation control in every half fundamental cycle. The indication and protection circuits act whenever short circuit and open circuit of LED module occur. Moreover, the current path is switched off when there is a short circuit of LED module.

目前一般白光发光二极体的驱动器，皆是使用直流电源驱动，本文利用发光二极体本身单向导通的特性，将发光二极体串接成桥式整流器的方式，只需控制流经中间路径的电流周期，就可达到调整发光二极体亮度之目的，并且增加发光二极体故障时的保护指示电路。

About 30～35 min after insemination the first polar body was ejected and the second polar body was ejected about 10 min later.

授精后约30～35 min放出第一极体，第一极体排出后约10 min第二极体排出。

By using the laser-lift-off technique followed by plasma etching process to roughen the surface, the VLEDs with n-GaN surface roughening has been fabricated.

另一部份，则是在垂直式氮化镓发光二极体的表面制造粗化的效果，以来增进光从发光二极体中萃取出的效率，利用乾式蚀刻将表面制造出粗化的效果，再利用标准的黄光微影制成技术，因此成功的制造出n型表面粗化的垂直式氮化镓发光二极体，至於出光强度的增强量会随者表面粗化情况的不同有著30%？

In order to obtain viable tetraploids, which remains a major challenge worldwide, research on spindle organization and chromosome behavior was carried out mainly in zhikong scallop, Chlamys farreri, a typical commercially important species which is being cultured in North China Sea. Immunofluorescent technique and laser scanning confocal microscopy has been developed for observation of both microtubule organization and chromosome segregation. Orcein squash method was also used for chromosome observation. A series of complicated configurations of the meiotic spindle and associated patterns of chromosome segregation, including tripolar and seperated bipolar segregation, were found in developing eggs following the inhibition of the first polar body.

为了攻克可存活四倍体人工培育技术的国际性研究难题，本研究选取了我国北方海区的典型经济贝类栉孔扇贝为主要研究对象，建立了一套免疫荧光染色和激光扫描共聚焦显微技术，结合使用染色体地衣红压片观察技术，对第一极体受抑制的受精卵的减数分裂纺锤体装配、染色体分离动态进行了研究，发现了一系列特殊的纺锤体装配及相应的染色体分离行为，包括三极分离、独立二极分离等分离类型，从亚细胞水平上阐明了四倍体形成的细胞学机理。

And it comes to a conclusion that electrets can be made not only into a kind of material providing homogeneous electric fields but also into a kind of ventilative electrostatic shielding material.

利用驻极体具有的可任意切割、拼装、黏接的特性，从静电学的基本规律及由泊松方程构成的静电边值问题出发，对驻极体既可对外提供电场又可设计为屏蔽电场的 2个相异思维的研究结果展开了讨论，从而，从理论上指出驻极体既可以制成提供均匀外场的材料又可以制成一种透气性静电屏蔽材料。

Voltage Source and Current Source, Thevenin Theory, Trouble Shooting, Characteristic Curve of Diode, Diode Models, Rectifier Circuits, Input Filtering Capacitor, Voltage Multiplier Circuits, Limiter and Clipper Circuits, DC Clampers and Peak-to-peak Detectors, Zener Diode, Zener Diode Rectifier, Photoelectric Devices, Collector-Emitter Junction, Transistor Characteristics of common-emitter, Base Bias, LED Dirver, Establishing a Stable Q-point, PNP Transistor Biasing, Transistor Biasing, Coupling and By-Pass Capacitors, AC Emitter Resistance, Common-Emitter Amplifier, Other Common-Emitter Amplifiers, Cascaded Common-Emitter Amplifiers, AC Load Line, Emitter Follower, Class B Push-pull Amplifiers, JFET Characteristic Curve, JFET Biasing, JFET Amplifier, VMOS Circuit, Differential Amplifier, Operational Amplifier, Non-inverting Feedback, Negative Feedback.

电子学实验( S0704)(1，1)/应用电子学实验( S0472)(1，1)电压源和电流源、戴维宁定理、故障排除、二极体特性曲线、二极体近似模型、整流电路、电容-输入型滤波器、倍压电路、限制器电路和峰值检测电路、直流定位器与峰对峰检测器、齐纳二极体、齐纳二极体整流器、光电元件、集射极接面、集极特性曲线、基极偏压、LED驱动器、建立一个稳定的工作点 Q 、 PNP 电晶体偏压、电晶体偏压、耦合及旁路电容、交流射极电阻、共射极放大器、其他 CE 放大器、串接共射极放大器、交流负载线、射极随耦器、 B 类推挽式放大器、 JFET 特性曲线、 JFET 偏压、 JFET 放大器、 VMOS 电路、差动放大器、运算放大器、非反向电压回授、负回授。

The diode laser at 657 nm has the characteristics of lower cost and higher power than that at 633 nm. Therefore, we use the 657 nm ECDL to investigate the saturation spectrum of the hyperfine structure components of P(84) 5-5 transition of 127I2 at 657.483 nm for frequency stabilization of our ECDL laser.

nm 波段的二极体雷射比起633 nm 波段的二极体雷射拥有较低的费用和较高的功率，因此，我们使用657 nm 波段的外腔二极体雷射来研究657.483 nm 波段之碘分子跃迁P(84 5-5 transition of 127I2，并将我们的外腔二极体雷射稳频在此跃迁的超精细结构成分上。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。