核的

The results on the effects of micronucleus in erythrocytes of Danio rerio induced by bensulfuron-methyl at different times and different concentrations showed that the MN rate of control group was 0.0103%, the highest MN rate of experimental group reached to 0.372%, it also indicated that bensulfuron-methyl herbicide had genetics toxicity to Danio rerio.

不同处理浓度和染毒时间对斑马鱼红细胞微核形成的影响试验表明，对照组红细胞微核细胞率为0.010 3%，处理组红细胞微核细胞率最高达0.372%，说明除草剂苄嘧磺隆对斑马鱼具有遗传毒性作用。

The result indicates that the base glass without composite nucleating agent experiences no devitrification in the heat treatment process.

研究表明，晶核剂可以诱导非均匀成核，未加晶核剂的基础玻璃虽然经热处理过程，但仍无结晶相析出。

Barley seeds were irradiated with five different doses of 60 Co-γ ray.There were many kinds of chromosome aberration in pollen mother cells,such as bridge,laggards in anaphase I and anaphase II,asymmetrical division in anaphase I and asynchronous division in anaphase II,ring quadrivalent in metaphase I,three pole division and micro-nuclei in telophase I,micro-nuclei in tetrad and some micro-nucleus separates from the tetrad to form polyad.

大麦种子经5种不同剂量γ射线辐照后， M1植株的花粉母细胞出现多种染色体畸变类型，例如后Ⅰ、后Ⅱ中出现桥、落后，后Ⅰ中出现不对称分裂，后Ⅱ中出现不同步分裂，中期Ⅰ出现环状四价体，末期Ⅰ中有三极分裂和微核，四分体中出现微核且有的微核独立于四分体，从而形成多分体。

It was observed that the PPD mRNA expression in supraoptic nucleus, paraventricular nucleus of hypothalamus and nucleus raphe dorsalis was stronger in the brain sections of rats treated with melatonin than in those treated with vehicle.

结果观察到，给药组大鼠视上核、下丘脑室旁核、中缝背核内神经细胞的PPD mRNA表达明显强于对照组；其IOD值均显著高于对照组(P0.05)。

There are commonly eight nuclei in the embryo sac: the egg apparatus at the micropylar end, made up of an gee nucleus and two synergid nuclei; three antipodal cells at the oppsite chalazal end that probably aid embryo nourishment; and two polar nuclei in the center that fuse to form the primary endosperm nucleus.

通常胚囊中有8个核，卵器在珠孔端，由卵和两个助细胞组成；3个反足细胞在合点端，可能为胚胎提供营养；胚囊中央有2个极核，融合在一起形成最初的胚乳核。

The nucleolus (3) shows an internal structure. The chromatin is predominately euchromatin with heterochromatin which is typically located close to the nuclear envelope and is discontinuous at the nuclear pores.

可见核仁内的结构（3），核内常染色质为主，异染色质特征性地分布与核膜内表面，核孔处无异染色质分布。

In this paper, the performance of SVM based on Fourier kernel is studied which aims at the regression in signal processing questions, and the influence of parameter q on performance of SVM is analyzed. A conclusion is drew that the integral of Fourier kernel in one period is a constant and the concept of equivalent kernel function width is proposed.

本文针对信号处理中的回归问题，研究了基于傅立叶核函数支持向量机的性能，并分析了参数q对其性能的影响；根据推导得出傅立叶核函数在单个周期内积分为常数的结论，并提出了等效核宽度的概念；最后的仿真结果证实了，在信号处理领域，采用傅立叶核函数的支持向量机比采用径向基核函数的有着更好的性能。

On the basis of this system andpreviously morphological, physiological and biochemical studies on cucumber in vitrogynogenesis. Materials from both typical gynogenesis using M99 as induction medium andnon gynogenesis using W5 as induction medium were collected. The activities anddistribution of peroxidase and its isoenzymes, content of soluble protein and distribution of allprotein during early stage of cucumber in vitro gynogenesis and non gynogenesis wereinvestigated by biochemistry and histochemistry technology.

本试验在前期有关离体黄瓜雌核发育形态学和生理生化研究的基础上，以诱导离体雌核发育的 M99 培养基上和非雌核发育的 W5 培养基上培养的黄瓜未受精子房为试材，采用生物化学技术和组织化学技术，深入研究了离体雌核发育早期外植体内的标志酶——过氧化物酶及其同工酶的活性及分布的变化、可溶性蛋白质的含量和总蛋白质分布的变化及核酸和多糖分布的变化，为揭示离体雌核发育早期的细胞分化机制提供科学依据。

objective : To introduce a technique of High frequency capacitance pachydermatous treatment clamp sutureless closed hemorrhoidectomy as an alternative to the conventional Milligan open hemorrhoidectomy .

目的 介绍一项较 Milligan 开放痔核切除术更优越的高频电容场钳无缝线闭合痔核切除的新方法。方法选有痔核切除指征的 III 度以上环状混合痔病人 80 名，随机分成高频电容场钳无缝线闭合痔切除组（组 I ： 40 例）和 Milligan 开放痔核切除组（组 II ： 40 例）。由同一痔科医师操作。

Under the light microscope, we found that transfected SGC7901 gastric cancer cells with NHE1 antisense gene were larger with abundant cytoplasm and comparatively same size of nuclei, and the ratio of nuclei to cytoplasm, mitotic count and heteromorphism decreased when they were compared with their parent cells.

与亲本细胞相比，光镜下NHE1反义基因转染的SGC7901胃癌细胞胞体增大，胞质丰富，核大小相对一致，核质比和核分裂象减少，异型性减少。

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。