上核

The nuclear 28S rDNA sequence has been widely used in higher phylogenetics of arthropod, but has seldom been applied to Acari.

核醣体28S rDNA序列已广泛应用於节肢动物高阶的亲缘分析，但在蟎蜱的应用上却仍罕见。

According to previous research work, the sulfoacetic acid disodium salt was synthesized by a nucleophilic substitution reaction in this paper.

本论文在总结前人研究工作的基础上，采用亲核取代反应合成了磺酸乙酸钠。

Now, in a posting on the Galaxy Zoo blog, Dr Keel and Dr Lintott suggest that the galaxy right next door to the voorwerp used to be a quasar (a very bright active galactic nucleus) that has since eaten up all its fuel.

现在，在星系动物园博客上的一个帖子中，Keel 博士和 Lintott 博士认为在"物体"旁边的星系曾经是个类星体（一种很明亮的活跃星系核），但现在已经把它的燃料给消耗光了。

BALLISTIC and nuclear adventurism by Kim Jong Il this year has not fundamentally changed Japan's calculations about its safety—the North Korean threat, after all, has been around for a while.

金正日今年的弹道导弹和核冒险主义并未从根本上动摇日本对其自身安全状况的评估。毕竟朝鲜这一威胁已经存在了一段时间了。

At the same time, the conditions of affine transform approximation are given in this chapter.

第三章在仿射模型的基础上，首先从函数空间的角度建立起不变特征提取的模型，将不变特征提取归结为寻找具有特殊性质的核函数。

By incorporation of tritiated thymidine or 5-bromodeoxyuridine and using them as the markers, we found that the basal cells, Clara cells and type Ⅱ alveolar epithelial cells in the pulmonary tissues may in some way behave like stem cells and can eventually differentiate into respiratory tract epithelium.

通过应用cells in induced group cultured for 2 weeks von kossa staining）标记的胸腺嘧啶(3H-TdR或5-溴脱氧尿核苷的渗入进行标记，发现肺组织的基底细胞、clara细胞和肺泡Ⅱ型上皮细胞可能具有干细胞特征，能最终分化形成气道上皮。

For the case of pH-induced micellization, as pH of the solutions decreases to below 4.6, micellar structure having insoluble complexes of PAA/PNiPAAm as the core and solvated HEC chains as the shell can be obtained due to hydrogen-bonding complexation between the proton-acceptors in PNiPAAm and the proton-donors in PAA.

首先发现pH诱导胶束形成的临界pH值在4.6附近，证实了胶束化机理是由于低pH下PAA接枝链上的质子给体与PNiPAAm支链上的质子受体间的氢键络合形成胶束的&核&，HEC不参与络合形成胶束的&壳&。

As SoCs with multiple microprocessor cores are concerned, the OCD technique faces new challenges.

对于具有多个微处理器核的片上系统而言，片上调试技术面临新的挑战。

METHODS: Bone marrow was extracted from the anterior supervior iliac spine or the posterior superior iliac spine of canines of the cell transplantation group through puncture. BM-MNCs were isolated by the Ficoll density gradient isolation, and labeled with CM-DiI.

细胞移植组于髂前上嵴或髂后上棘穿刺抽取骨髓，经Ficoll密度梯度离心法分离获取骨髓单个核细胞，行CM-DiI标记。

The charge distribution result shows that the carbon is easy to get electron, and the nitrogen with lone pair electrons in the amino group is the electrophilic reaction site.

电荷分布方面，三聚氰胺分子上的碳原子易得电子为亲核试剂进攻点，而胺基上的氮原子因含孤对电子是亲电反应中心。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。