微核

A strain of breast tumor cell line ZHL2006 was established and biologically identified. The ZHL2006 cells grew fast in vitro and the population doubling time was 43.6h. Electronmicroscopical observation showed that there were microvilli on the surface of the cells, nucleus irregularity, karyoplasmic ratio increased, nucleolus distinctness, et al.. Chromosome number and structure were abnormal. Immunohistochemistry showed that PCK were expressed. The ZHL2006 cell line could form onto clone in soft agar and had oncogenicity in athymic mice.

ZHL2006细胞在体外生长迅速，群体倍增时间为43.6h；倒置相差显微镜及Giemsa染色镜下观察细胞为多边形及梭形；透射电镜观察可见细胞表面有微绒毛，核高度不规则，核浆比例增大，核仁明显等；染色体数目和结构异常；广谱细胞角蛋白染色阳性，说明其自上皮而非来自基质；同时ZHL2006细胞系在软琼脂中可形成克隆，具裸鼠致瘤性。

Aim and Methods: In 36 anesthetized spontaneously breathing Sprague-Dawley rats, the types of respiratory neurons and the state of neurotransmitters and receptors in nucleus paragigantocellularis lateralis were studied with extracellular recording technique and multibarrel microelectrode techniques.

目的和方法：用细胞外记录法和多管微电极微电泳法在 36只麻醉自主呼吸的SD大鼠，系统探查旁巨细胞外侧核尾半侧呼吸神经元的类型及该区的递质受体情况。

In this paper, the effect of content of nano-CaCO3 nucleation agent on cell nucleation of Polystyrene microcellular plastics was studied with self-made dynamic foaming simulatorr.

本文在PS中加入不同含量的纳米碳酸钙作为成核剂，用自行研制的发泡模拟机研究了纳米碳酸钙含量对PS微孔塑料泡孔成核的影响。

The results show that nuclei make the microcrystalline structure and crystalline rate of PA1010 changed.

通过引入成核剂（Nd2O3）研究PA1010微晶结构的变化，以及对PA1010结晶行为的影响，也讨论了成核剂对结晶－非晶中间相的作用。

Studies on the crystallizing kinetics and micromeasurement explained that it speeded up the nucleation and avoided the aggregation of the crystals thus making the crystal product to be minimized.

对结晶动力学的研究和微观检测显示，控制一定的结晶工艺参数可减小二维晶核临界半径，加快晶核生成速度并避免了晶体的团聚作用，从而使产品趋于微晶化。

In order to better understand their phylogenetic relationship and identify the uncertain species, the sequences of the small subunit ribosomal RNA (ssurRNA, 16 S rRNA) genes of nine microsporidia infectious to the silkworm, Bombyx mori, were determined.

微孢子虫是真核生物，但其核糖体及核糖体RNA为原核生物型。为探讨9种家蚕病原性微孢子虫的种属地位及亲缘关系，对已广泛用於生物进化分类的核糖体小亚单位RNA基因进行了研究。

Methods Adopting electrophysiological methods, the extracellular discharge signals of neuronic action in NTS were recorded with glass microelectrode. The influence of the discharges of NTS neurons and gastric pressure responding to the acupuncture at "Zusanli" point were observed in normal status and the condition of Atropine or Metoclopramide intravenous injection.

采用神经电生理学方法，用微电极细胞外记录大鼠孤束核单个神经元的活动，在正常生理状态下及经血管注射抑制胃运动的药物阿托品或促进胃运动的药物胃复安后，观察针刺&足三里&对孤束核神经元放电及胃内压的影响。

Methods: Adopting electrophysiological methods, the extracellular discharge signals of neuronic action in NTS were recorded with glass microelectrode. The influence of the discharges of NTS neurons responding to the acupuncture at "Zusanli","Neiguan","Zhongwan","Qihai" point were observed in rats' normal status and the condition of intravenous injection Atropine.

采用神经电生理学方法，用微电极细胞外记录大鼠孤束核单个神经元的活动，在正常生理状态下及经血管注射抑制胃运动的药物阿托品后，观察针刺&足三里&、&内关&、&中脘&、&气海&对孤束核神经元放电的影响。

Methods Adopting electrophysiological methods,the extracellular discharge signals of neuronic action in NTS were recorded with glass microelectrodes. The effects of acupuncture at "Zusanli"(ST 36),"Neiguan"(PC 6),"Zhongwan"(CV 12),"Qihai"(CV 6) on discharges of NTS neurons and intra-gastric pressure were observed in the rat at normal physiological state,and increase or reduction of gastric motility.

采用神经电生理学方法，用微电极细胞外记录大鼠孤束核单个神经元的活动，观察在正常生理状态及胃运动增强和胃运动抑制的病理状态下，分别针刺&足三里&&内关&&中脘&&气海&对孤束核神经元放电及胃内压的影响。

Icrofilaments were mainly distributed in the cortex area which chromosomes located at mataphase of second meiosisand concentrated around pronuclei after pronuclear formation.

II 期卵母细胞微丝主要集中在染色体所在的皮层区域，原核形成后微丝绕核重新聚集。

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