介

In this study, to define the functional roles and mode of the upstream regulatory elements ofα-globin gene cluster,αMⅡwas obtained, in which the 31.7kb sequence including HS-33, HS-10、HS-8 and HS-4 was deleted by defective prophage mediated by the homologous recombination;αMⅢwas also constructed, in which the 35.4kb sequence including HS-40、HS-33、HS-10、HS-8 and HS-4 was deleted by the method of temperature sensitive shuttle vector mediated homologous recombination.

在此基础上，为了定义α-珠蛋白基因簇上游各调控元件的调控功能，并探讨其作用机制，本研究利用缺陷型原噬菌体介导的同源重组法修饰α-BAC，删除包括HS-33、HS-10、HS-8和HS-4在内长达31.7kb的序列得到BAC突变体αMⅡ；又利用温度敏感型的穿梭载体介导的同源重组法删除包括HS-40、HS-33、HS-10、HS-8和HS-4在内达35.4kb的序列，得到BAC突变体αMⅢ。

The height, weight, blood pressure, fasting plasms glucose, fasting serum insulin, glycosylated hemoglobin (HbA1c), triglyceride, total cholesterol, low density lipoprotein cholesterol, high density lipoprotein cholesterol, and serum nitric oxide were measured before and after the therapy. The body mass index and homeostasis model assessment-insulin resistant index were calculated. The flow-mediated dilatation and endothelium independent dilatation were measured by high-resolution ultrasound.

治疗前后均检测身高、体质量、血压、空腹血糖、血浆胰岛素、糖化血红蛋白(HbA1c)、甘油三脂、胆固醇、低密度脂蛋白、高密度脂蛋白数(homeostasis model assessment-insulin resistant index， HOMA-IR)，并用高分辨超声技术检测肱动脉血流介导的内皮依赖性舒张(flow-mediated dilatation， FMD)和硝酸甘油介导的非内皮依赖性舒张(endothelium independent dilatation， EID)。

The second chapter introduces the one-dimensional chain of phonon density of states with different chain structures.

第一章，我们主要介绍介观物理的概念以及研究介观输运常用的几个方法。

There was the same horizontal distribution for the abundance and biomass of ostracods in 9 sampling areas, and then the high abundance and biomass appeared in the east of Tai Lake (such as East Tai Lake, Eastern Coastal Belt and Gong Bay) because of the feeding and behavior habits of ostracods. Among the 9 areas, except for Meiliang Bay and Gong Bay, there was similar seasonal pattern for abundance and biomass in Tai Lake.

fabaeformis和塔尔薄丽星介的自身繁殖力是造成梅梁湖和贡湖中介形类丰度和生物量间存在差异的主要原因，但两湖区中介形类丰度和生物量在整个太湖中所占比重有限，所以不影响太湖总体介形类季节变化趋势，四个季节中介形类的丰度和生物量均值总体呈现出秋＞夏＞冬＞春的规律。

The greyish-green mudstone in the Member 4 of Quantou Formation richs in pyrite. The grey and grayish-black mudstone in the Member 1 of Qingshankou Formation is of Ostracods、Esthenaus fossils and grainy pyrite .

泉四段上部为灰绿色的泥岩，青一段下部为深灰色、灰黑色的泥岩，可见介形虫、叶肢介，部分层位见粒状黄铁矿分布。

Methods Blood samples of fifty-two patients who underwe n t open heart surgery with CPB were collected from right internal jugular vein at p oints as pre-CPB, rewarming, aortic declamping, 6 hours and 24 hours after CPB. Cytokines, iNOS, S-100 and NSE were assayed accurately. In addition, its corre lation between them were also analysed.

方法于 CPB前、复温即刻、主动脉开放和 CPB后 6、2 4小时采集 5 2例心脏病患者颈内静脉血，检测 S- 10 0蛋白和 NSE的浓度，并将其与炎性细胞因子白细胞介素- 6 (IL- 6 )、白细胞介素- 8(IL- 8)、肿瘤坏死因子-α和诱导型一氧化氮合成酶的浓度变化进行相关性分析。

However, the use of quarter-wave impedance transformer is inevitable as attempting to use overlay dielectrics with different dielectric constants or thickness.

然而，当尝试采用不同介电常数与厚度的覆盖介电质来设计电路的时候，发现必须采用四分之波长阻抗转换器才能完成滤波器的设计。

The dependence of the frequency range on structural paramerter (crystal lattice shape, the ratio of the rod radius and the lattice constant) and electromagnetic parameter (the dielectric constants of the rods and of the background, incident electromagnetic waves with different polarization) were investigated.

同时，分析了AANR频率范围随着结构参量(晶格类型、介质棒半径与晶格周期的比值)和电磁参量(介质柱介电常量、本底介电常量、入射电磁波偏振方向)变化的行为。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10～12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响，从反射信号能量角度出发，给出了入射脉冲上升时间与弛豫时间的关系；接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响，给出了RAM目标辐射和有关UWB信号设计的一般性结论；其次，对介电RAM的弛豫时间效应作了简单的分析，探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响；最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统，在微波暗室中对几种不同的RAM目标进行了测量，结果表明：其反射波形的基本规律与上述理论分析相一致；从各种不同目标回波的能量对比结果得出，涂覆RAM目标对冲激信号的吸收比15％带宽的正弦信号要小10～12dB，证实了RAM的非线性效应对回波的影响，也证实了冲激信号反隐身的潜力。

Which play a major role in the pathological changes of restenosis after angioplasty But AT2 receptor is only expressed abundantly in the fetal vasculature with rapid decline after birth and the level of re-expression in the adult vasculature after injury is very low So there are little understanding about the actions of AT2 receptor in vascular diseases, especially in the restenosis after injury.

在寻致或加重VSMC增殖和迁移诸多因素中，血管紧张素Ⅱ所介导的生物学作用是其中重要的因素之一。AngⅡ具有多种生物学作用，其作用的多样性是通过其受体的多样性介导的，目前已确定的AngⅡ受体至少有两型，即AngⅡ 1型受体(AT1R)和AngⅡ 2型受体(AT2R)。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。