核型

Based on the histochemistry observation, there appears two types of cell in the lymphoid tissues of sacculus rotundus in the 1st day: A type showing large, pale, round or oval shapes, has large and bright nuclear, but little cytoplasm.

组织形态学观察发现，在1d兔圆小囊淋巴组织中主要可见两种类型的细胞：其中Ⅰ型细胞体积大、着色浅，核大而空亮。

As a result, the medicinal chemists have focused their attention on designing and preparing new L-nucleoside analogues to search for more powerful and securer new antiviral agents.

药物化学家们对此产生了极大的兴趣，进一步开展了新型L型核苷类化合物设计、合成的相关研究，以便筛选出更安全有效的抗病毒试剂。

F1 hybrid has the morphological feature which is between the male and female parents and shoed strong heterosis, exuberant vitality, late ripe period and low rate of self-fertility. The average chromosome configuration of F1 in PMC MI was 18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ. At anphase Ⅰ in PMC, some laggard chromosomes arranged in equatorial plate. Micronucleus and a lot of abnormal cells can be observed at dyad, tetrad and microspore.

杂种F1形态特征介于双亲之间，具有较强的杂种优势，生长旺盛，熟期晚，自交结实率较低。F1花粉母细胞减数分裂中期Ⅰ平均染色体构型为18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ，PMC后期Ⅰ观察到部分落后染色体排列在赤道板上；二分体、四分体和小孢子时期，细胞内普遍观察到微核，且出现大量异形细胞。

The structures of spin quimtuplet state of {2}3+ and {2}5+ are more stable than those of spin singlet states of these complexes.

同时双核之间的咪唑桥环也对稳定该模拟物的构型起到了一定的作用。

Main results:(1) For the stochastic Volterra type integral equation with singular kernels,it is the first time to be investigated under non-Lipschitz conditions. The existence-uniqueness and Hlder\'s continuity are established.Here,an extended Minkowski\'s inequality plays a key role.

主要结论：(1)关于具有奇异核的随机Volterra型积分方程，我们首次在非Lipschitz条件下进行研究，得到解的存在唯一性和Hlder连续性(此处证明的一个关键步骤应用了推广的Minkowski不等式)。

Objective To construct the eukaryotic expression vectors containing the coding region of human full length sphingosine 1- phosphate receptor type Ⅰ（S1P1） gene with hemagglutinin and/or EGFP tag, and to detect its expression in HEK293 ceils.

目的构建含人Ⅰ型1-磷酸鞘氨醇受体-全长cDNA序列及HA和／或EGFP标签的真核表达载体，并观察其在HEK293细胞上的表达。

In order to study on the fast,simple and efficacious method of forecast the sclerotinia stem rot.

为了探索预测油菜菌核病发生情况的快速、简单、有效的方法；此研究采用检测被核盘菌子囊孢子感染的油菜花瓣数量来预测预报菌核病可能发生严重度程度，实验采用添加了两种不同pH指示剂的改良型Steadman's培养基在室温下培养在油菜花期(3月下旬～4月中旬)每天采自2块试验田的新鲜花瓣，如果花瓣被病原菌子囊孢子感染，接种培养后培养基颜色发生改变，统计被感染的花瓣数；结果表明：除1天在一块田没有检测到被子囊孢子感染的花瓣外，油菜整个花期都有被感染的花瓣出现，但初花期被感染的花瓣较少，而盛花期和终花期被感染的花瓣较多，第一块田被感染的花瓣数在两种培养基上出现的百分率分别为32.0%和40.2%，第二块田分别为27.3%和35.7%。

To construct human IL-16 eukaryotic expression vector,and analyse its function of switching Th2 type tumor cells.

构建人IL-16真核表达载体，分析其对Th2型肿瘤细胞的逆转作用。

HPV11 E2 mRNA was taken as the target RNA, ribozyme were designed accounting to the hammerhead structure described by Symons.

借助计算机软件分析，设计出能特异性切割HPV11型644nt E2 mRNA的核酶。

Objective To construct a recombinant eukaryotic expressing vector pcDNA3.1-Myc-His B/t-PA including functional region of human tissue-type plasminogen activator gene to provide a basis for further study on the therapy of thrombotic disease.

目的 构建人组织型纤溶酶原激活因子基因的新型真核表达载体，为血栓性疾病的基因治疗奠定基础。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。