查询词典 nucleotide

First, if the nucleotide consists of a unit having circular symmetry about an axis parallel to the helix axis, the whole diffraction pattern is modified by the form factor of the nucleotide.

首先，如果核苷酸组成一个单位有一个圆形对称轴平行的螺旋轴，整个衍射图样是修改了外形的核苷酸。

In this paper, we focus on such aspect as mathematic expression in DNA and protein sequences, similarity analysis and phylogenetic tree structure. Mainly include:After summarization mathematical methods of DNA and protein sequences in detail, the paper presents a 2D graphical representation of DNA sequences based on dual nucleotide, and graphical representation of the distribution curve of sequences with nucleotide sequences of the classification.

论文在DNA和蛋白质序列的数学表示、相似性分析和进化树的构造等方面进行研究，主要工作包括：在对DNA和蛋白质序列的数学表示方法进行较为详细的综述后，提出了一种基于双核苷酸的DNA序列2D图形表示方法，利用核苷酸的分类给出了序列的分布曲线图形表示。

After cloned and sequenced, the nucleotide of exon 1 of hircine GDF9 gene is 397 bp and is 99%(395 of 397) homologous to sheep. The nucleotide of exon 2 of hircine GDF9 gene is 965 bp and is 98%(955 of 965) homologous to sheep.

克隆测序后连接出山羊GDF9基因的外显子1长度为397bp，与绵羊外显子1的同源性为99%(395/397)，外显子2长度为965bp，与绵羊外显子2的同源性为98%(955/965)。

The phylogenetic trees revealed the GD3 strain was a intergrade virus strain evoluated from classical PRRV CH-1a strain to the PRRSV JXA1 and HUN4 mutant strains indicated by 97.1 %, and 97.2 % nucleotide homology with JXA1 and HuN4 strain, 94.9% nucleotide homology with CH-1a strain.

序列分析结果表明，GD3株在分子遗传演化上介于PRRSV变异毒株(HuN4 株、JXA1株)和CH-1a之间，与HuN4和JXA1之间的相似性为97.1 %和97.2 %；与CH-1a的核苷酸相似性为94.9 %。

The results showed that Non-haemagglutinating activity was showed in the isolate. In agar diffusion test,there was a clear precipitin band formation to anti-IBDV specific serum. 28-day-old chicks inoculated with the isolate showed disease,and the isolate was recovered from the tissues of these chickens. The 1 041bp specific fragment were amplified by RT-PCR with sequence-specific primers based on IBDV VP3 gene. The VP3 gene shared 97.7%~98.2% nucleotide identities to very virulent IBDV,97.7%~95.2% nucleotide identities with classical strains from seqiemce analysis.

结果表明，该分离病毒无血凝性，在琼脂扩散试验中能与抗IBDV特异性血清出现1条清晰的白色沉淀线；人工感染28日龄雏鸡出现与临床一致的病变，并回收到病毒；应用针对IBDVVP3基因的特异性引物进行RT-PCR，能扩增到长度为1041bp的特异性目的片段；序列分析发现分离毒VP3基因与IBDV超强毒和经典毒株的核苷酸同源性分别为97.7%~98.2%和95.2%。

Objective To explore the effect of exogenous purine nucleotide on the augmented atabolism of neurocyte nucleotide induced by morphine.

目的 探讨外源性嘌呤核苷酸对吗啡致神经细胞核苷酸分解代谢增强的影响。

Among the roe deer population of three geographical units, the geographic region, the Great Khingan Mountains, have higher numbers of base differences, higher nucleotide diversity and higher average number of nucleotide differences.

3三个地理单元的狍种群中，大兴安岭地区的狍种群具有较高的碱基差异数、最高的核苷酸多样性和最高的核苷酸差异平均数。

Compared with 11 other isolates reported in GenBank, there was slightly variation in the nucleotide sequence of Omp25 gene of wapiti's isolate. The identities of nucleotide sequence and deduced amino acid sequences among 11 strains were 99.1%-99.4% could 99.2%-99.5% respectively.

与GenBank中已经登录的布氏杆菌其他11个分离株相比，马鹿布氏杆菌分离株Omp25基因变异较小，以散在的点突变为主，Omp25基因核苷酸和推导氨基酸序列的同源性分别为99.1%-99.4%和99.2%-99.5%之间。

Only 3 haplotypes existed within chinese goat populations by analyzing 96 sequences in the study, combined 16 domestic goats and 2 wild goats (Capra aegagrus and Capra falconeri) reported in documents. The average number of nucleotide differences, average number of nucleotide subs.

将本研究测定的96条mtDNA的D环全序列与文献报道的16条家山羊序列、2种野山羊的D环序列结合分析发现，文献报道的单倍型仅有3种在中国山羊中存在。

After two-cluster testing,branch length testing and relative rate testing ,two sequences(Melantitta nigra and Aythya americana) of 15 Cty b sequences were deleted because thek evolutionary rate were heterogeneous. The divergence between Anseriformes and Galliformes was chosen as an anchor point. Nucleotide sequence and amino acid sequence of 13 sequences data set was used to calibrated Anatidae molecular clocks. The results indicated that amino acid sequence is better than nucleotide sequence when divergence time is calculated with two kinds of sequences. The reliable divergence time of Anatidae were estimated with """"1+2TiTv"""" model.

经过二簇检验、分枝长度检验和相对速率检验，删除2条速率不恒定的序列后，用剩余的13条序列，以鸡形目与雁形目的分歧时间(89.8MYA)为锚定点，用顺序标定法标定鸭科鸟类分子钟的分析结果表明，用&1+2TiTv&分析得到的鸭科鸟类的分歧时间比较可靠；氨基酸序列用泊松校正模型和Γ模型估计的分类单元间的分歧时间则比较一致，表明氨基酸序列更适合用于鸭科鸟类分子钟的研究；用同一基因标定分子钟时，较长序列得到的结果标准误比较小；与核苷酸序列相比，氨基酸序列更适于用作分子钟的标定。

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。