序列性

Under suit upper and lower solution, iteration sequences were constructed, and existence and unique of solutions of linear boundary value problems on second order nonlinear Hammerstein type integro-differential-difference equation were obtained by means of applying the Arzela-Ascoli theorem Lebesque control convergence theorem and disproof method.

在上下解存在的条件下，构造迭代序列，由Arzea-Ascoli定理和Lebesque控制收敛定理得到了二阶非线性Hammerstein型积分微分差分方程的线性边值问题的解的存在性。再利用反证法获得了解的唯一性。

According to the analysis of distance matrix, the genetic relationship between strains and the related known species from systematic dendrogram, ITS sequence analysis supports the traditional classification of Auricularia based on morphology.

根据遗传同源性分析，遗传距离分析和系统树上所显示的供试菌株及相关已知种的亲缘关系，ITS序列分析支持传统的依据形态学进行的木耳属分类。

Homology search of genomic DNA can reveal pseudogene sequences, and some properties of pseudogenes such as population, distribution, and homology family can be examined.

通过序列同源性搜索，可以收集基因组中假基因的群体特性、染色体分布和同源家族等特性。

However, in some situations, models are hard to satisfy these assumptions at the same time. We meet a number of random errors with serial correlation and heteroscedasticity in practical problems. The rationality of these assumptions for random errors is doubtable. Therefore, it is necessary to test for correlation and heteroscedasticity in regression, which is an important step of dealing with regression problems and plays an important role in theory and practice.

但实际问题中，回归模型很难同时满足Gauss-Markov的三个假设，人们在实际问题中发现许多随机误差出现序列相关和方差不同的现象，因此对回归模型的随机误差的独立性和方差齐性的假设产生了质疑，从而展开了回归模型的相关性和异方差检验的研究，它是处理回归问题的重要步骤，在理论和应用上都有十分重要的意义。

The sensitive sites are just the bonds of highest electron affinity and lowest ionization potential. Formation of the sites results from the interaction between several nearby nucleotides. So, the sensitive sites should be a piece of DNA sequence.

敏感位点即这些相对较弱或亲电性较强的化学键，而这种化学键的产生是与敏感位点邻近的几个核苷酸相互作用的结果，即敏感位点应该是一段DNA序列。

Objective To establish a prokaryotic expression system for expressing mouse enterokinase which could recognize and cut the sequence of4-Lys in order to provide a technique platform for application of recombinant enterokinase.

目的：制备能在原核表达系统中表达并特异性识别4-Lys序列的鼠源性肠激酶，为推广应用重组肠激酶提供技术平台。

The novel primers were evaluated by detecting BTV serotypes 1, 3, 5, 8, 10, 11, 21 and 22. The specificity of the primers was estimated by comparing to gene sequences of viruses published in GenBank, and further assessed by detecting BTV serotype 1-12 and Epizootic hemorrhagic disease virus serotype 1-4. The sensitivity and repeatability of PCR with the novel primers were evaluated by successfully detecting the recombinant plasmid pGEM-T121 containing the diagnosed nucleotide sequence.

Blast软件分析引物与GenBank发表的病毒基因的同源性，显示引物特异性较好；利用8个不同血清型BTV标准毒株进行RT-PCR检测，证实该引物能有效检测不同血清型BTV；通过BTV1-12和EHDV1-4进行检测，证实该引物具有较好的检测特异性；通过制备的含特检序列的质粒标准品P121进行检测，显示该引物检测的敏感性为105 copies，重复检测CV%为0；对模拟血清样品进行检测，结果均为阳性。

The protein encoded by RBB1 contained two conserve domain ATP-synt-DE-N and AtpC from 3 to 83 and from 1 to 133. All above showed that the full length cDNA RBB1 encoded ATP synthase CF1 epsilon chain protein The plant resistant mechanism is very sophisticated and one of the mainly responses is the metabolic change.

植物的抗病机理非常复杂，其主要反应之一就是代谢上的变化，例如，在利用cDNA微阵列对水稻抗稻瘟病近等基因系的分析中，检测到了很多与光合作用和糖代谢功能有关的差异表达片段；在小麦中也筛选到一个植物中ATP酶具有高度同源性的cDNA序列可能与小麦抗白粉病相关。

And the chaos optimal algorithm can improve the computing speed because of its exquisite interior configuration,randomicity,ergodicity and sensitive to the initial value.

混沌优化算法利用混沌序列精致的内部结构，以及它的随机性、遍历性和初值的敏感性来提高优化算法的效率。

The pathogenicity of 19 strains of Alternaria alternata isolated from Eupatorium adenophorum was studied. 5.8S rDNA, ITS1 and ITS2 sequences of 22 strains from crofton weed and other plants were analyzed.

对分离自紫茎泽兰的19个链格孢菌菌株的致病性进行了比较研究，并对这19个菌株和其它来源的3个菌株的5.8S rDNA及其两侧的ITS1区和ITS2区进行了序列分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。