核体

The fertilization was processed by sperm in mature male gametophyte combining with egg cell on the top of archegonia on June 15 or so.

摘要樟子松发育成熟的雄配子体中的精子6月15日左右在颈卵器中上部与卵细胞结合，进行受精作用，其后，受精卵进行游离核分裂，形成8个子核时，开始形成细胞壁。

The cell structure refining mechanism shows that adding Mg decreases the surface tension of the aluminum alloy melt and hence to increase the bubble stabilization. Adding nuclear forming agent increases the nuclei of heterogeneous nucleation. Adding pre-heating foaming agent postpones its decomposition, hence to increase the uniform of foaming agent dispersion. Stirring within the middle stage of foaming agent rapid decomposition breaks up big bobbles to fine bobbles, hence to reduce mean cell diameter.

孔径细化机理分析表明，Mg的作用在于降低铝熔体的表面张力，提高气泡稳定性；形核剂的作用在于增加气泡非均匀形核的核心；发泡剂氧化预处理可以推迟和延缓发泡剂的分解，提高发泡剂的分散均匀性；搅拌发泡的作用是在发泡剂剧烈分解的中段，通过搅拌搅碎气泡，减小平均孔径。

The formation of the precursor for nucleation and growth of TiO〓 particles is slow from the complex. So the formation of TiO〓 particles is a diffusion-controlled process described as the Lamer model.

虽然水解料液中钛的浓度较高，但是以络合物的形式存在，络合物转变成成核前驱体的反应是缓慢的，使成核和生长过程在扩散控制下按Lamer模型的方式完成。

The biological characteristic of many vertebrate parvoviruses have been clarified, for example the genome organization, the structure of capsids protein of virus particle, and the relationship between the structure and its function.

它与其它细小病毒一样，病毒粒子无包膜，呈球状二十面体对称，直径22nm，基因组为单链线状DNA分子，含有五种结构蛋白，嶂螂浓核病毒基因组全长为5454个核昔酸，于C含量为38.13%。

Morphologically and biologically, the triple-layered rotavirus particles are composed of three protein capsids, outer capsid includes VP4 and VP7, the middle is VP6, and the core is composed of VP2. VP1, VP3 and the 11 segments of double-stranded genomic RNA.

完整的轮状病毒颗粒直径约70nm，为正二十面体结构，由三层蛋白壳包绕，外壳为VP4及VP7蛋白，VP6蛋白构成病毒第二层蛋白壳，最内层为核壳，由结构蛋白VP1、VP2、VP3组成，核壳内包含有11个分节段的病毒双链RNA基因片段。

Tp92 gene can be expressed in eucaryotic system which lays the foundation of studying the biological activities and the development of the Syphilis DNA vaccine.

Tp真核表达重组体pcDNA3.1-Tp92的成功构建及在体外真核细胞中的有效表达，为进一步研制梅毒DNA疫苗及其生物学功能的研究奠定了一定的实验基础。

The general features of nucleosome structure appear to be similar in all eukaryotes.

核小体结构的一般特性似乎在所有的真核生物中都很相似。

Clearly, the larger the number of nucleation sites for a given amount of gold chloride in solution, the smaller will be the final size of each gold particle.

开始出现聚集，这个过程叫做成核现象，形成11个原子构成的中央二十面体金核。

FCC-SDP is composed of multi-banks of low capacity scratchpad memory modules, equipped with a synchronization framework based on hardware signal lamps, and supports parallel accessing of multi-DSP cores and point to point events synchronization.

FCC-SDP以多体并行的小容量便笺存储器为传输媒介，采用基于硬件信号灯的同步机制，支持多个DSP核的并行访问和点对点事件同步，访问速度与一级数据Cache相当，能够快速实现DSP核间细粒度共享数据的传输。

Results:Compared with the untreated fibroblast from hypertrophic scar, the rough endoplasmic reticulums were decreased, the ribosome were appeared degranulation and depolymerization and lysosomes were lncreased respectively.

结果：Mat可使增生性瘢痕成纤维细胞的超微结构发生变化；细胞内粗面质网减少，核糖体有部分脱粒、解聚现象，溶解体酶，核染色质浓缩集聚至核膜周边，出现凋亡早期的改变。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。