介体

The analysis result indicates that the chromosome number of 38 accessions is ranged from 63 to 90 as same as septuploid, octoploid, enneaploid and decaploid, respective.

结果发现台湾鱼腥草收集品染色体数目介於63~90条之间，分别为七、八、九及十倍体，另发现染色体数84与85条之异数体收集品。

The effective permittivity at the interface of piezoelectric crystal solid layer is employed to analyze the BAW excitation effect.

对压电晶体-固体-液体结构中叉指换能器的体声波激励效应进行了深入探讨，通过引入压电晶体-固体层界面的界面有效介电常数，研究了叉指换能器的体声波激励效应与晶体切向、电边界条件及固体层归一化厚度之间的关系。

Agrobacterium tumefaciens-mediated transformation system of Medicago truncatula cotyledonary-node explants Abstract The three-day-old seedlings of Medicago truncatula, which geminated in medium containing up to 5mg/L 6-BA, were used to prepare the cotyledonary-node explants which contained one cotyledon and 1-2mm of split hypocotyl. High-efficiency regeneration system of Medicago truncarula was developed by axillary shoot organogenesis of cotyledonary-node explants.

论文第二部分 Medicago truncatula遗传转化和植株再生体系的研究第一章根癌农杆菌介导的Medicago truncatula子叶节外植体转化系统的研究本文利用在高达5mg／L 6-BA的萌发培养基上生长3天的Medicago truncatula幼苗，制备获得由一片子叶和1-2mm切分的胚轴组成的子叶节外植体。

It is noticeable that while w/c ranges from 3 to 5, long term strength of the grout increases significantly because of the existing of slag in the grout, i.e. while w/c are different, the grouts are affected differently because of the slag added to the grouts.

而值得注意的是添加炉石对於水灰比介於3-5之浆体的晚期强度提升有较明显之帮助，这也显示了在不同水灰比的情况下，添加炉石对浆体亦会产生不同程度之影响。

The structure parameters of the component are further varied, to obtain multivarious frequency components. The resonance frequency of a component is reduced by filling high permittivity medium, and this makes it possible to keep the design of a component compact at low frequency even.

进一步改变结构参数，可获取不同谐振频率的器件，且可在腔体中填充高介电常数介质来减小器件的谐振频率，克服了以往使用腔体结构在低频段时体积过大等问题。

Complement-mediated opsonization involves the covalent binding of activated C3 and/or C4 to microbes, which allows, in turn, the recognition and phagocytosis of these microbes by phagocytes bearing complement receptors on their surface.

补体介导的调理作用需要有C3和C4与微生物之间的共价联结，它们分别导致表面有补体受体的噬菌细胞对微生物的识别和吞噬。

Methods:The conservative region of mTOR gene was inserted into pLXIN reversedly, then the vector was packaged in PT67 cells by transfection with lipofectamine and transfected to VSMC. The efficiency of antisense inhibition was verified,and the changes of p70S6k and 4E-BP1 were also determined at the same time. The proliferation activity was determined by flowcytometry and MTT.

采用脂质体介导转染包装细胞后构建mTOR的反义重组逆转录病毒载体(pLXIN-AmTOR)感染VSMC，检测mTOR及其下游底物包括真核细胞启动子4E结合蛋白1(4E-BP1)和核糖体蛋白S6激酶(p70S6k)的表达变化，以及VSMC细胞增殖周期和增殖活性的改变。

Viral vector mainly contain adenovirus, retrovirus,adeno-associated virus and so on, but it has potential danger of safety; it isrepeled by immune system when it is injected to organism for a greatimmunogenicity. An injection with adenovirus vector with highconcentration, it leads to serious inflammatory reaction of liver. Viralvector such as liposome and polycation are commonly used lately. But,liposome and polycation have low specificness and targetness of genetransfer tissue, have lower transfection efficiency and short period ofgene expression, for they can be phagocytized by endothelial system.

许多的载体，病毒载体和非病毒载体以前已广泛应用，病毒载体主要包括腺病毒，逆转录病毒，腺相关病毒等；但病毒载体在安全性方面存在潜在的危险；免疫原性比较强，注射到机体后很快会被机体的免疫系统排斥，当静脉注射高浓度的腺病毒载体会使肝脏发生严重的炎症反应；非病毒载体目前常用的有脂质体及多聚阳离子聚合物；但脂质体和阳离子聚合物介导基因转移缺乏组织的特异性和靶向性，转染效率较低且易被网状内皮系统吞噬，基因表达时间短；因此研制新型的非病毒载体已成为研究的热点，纳米颗粒具有小尺寸效应，表面效应，随着颗粒直径变小，比表面积将会显著增大，故具有很高的化学活性，因而纳米成为了最有应用前景的非病毒载体。

Cobra venom factor depletes complement C3 and may therefore be important in preventing the complement-mediated damage and disease.

眼镜蛇蛇毒因子能特异性清除机体循环中的补体C3，从而可能在防治补体介导的损伤或疾病中发挥重要的治疗作用。

The effect of tilting in oxygen octahedra on the dielectric properties is due to the interoctahedral angle increasing to 180℃ consuming the thermal energy, which results in the less effect on polarizability with increasing temperature.

氧八面体扭转能使介电常数温度系数朝正的方向变化的本质是，氧八面体间角吸收热能朝180℃变化，导致纯温度变化对极化率的影响变小。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐