查询词典 mutation

This mixed strategy has been tested on benchmark functions. The simulation results show that the mixed mutation strategy is superior to any pure mutation strategy.

使用国际通用标准函数来测试这种新算法，仿真的结果表明了基于物种保护的混合变异算子进化策略优于任何一种纯策略的进化策略。

Tracing the development process (i.e. the life history) of vacuum cleaner, we found similarities between product development and evolution trend, such as the theory of "evolve by use and degenerate by no-use" by Lamarck, the theories of mutation, excessive breeding, competition for existence, and survival of the fittest in the Theory of Natural Selection by Darwin and Wallace, as well as the theory of mutation in Neo-Darwinism.

文中经由观察吸尘器诞生后的发展过程，亦即它所经历的生命史中，归纳出它所显现的演变现象有些似乎和演化论有相似之处，例如：Lamarck的用进废退演化现象，Darwin天择说中的变异、过度繁殖、生存竞争、适者生存等，及集合各家说法的Neo-Darwinism中的突变等。

Results In the 10 members, T→C nucleotide change at the 223 base of exon 3 was detected in 9, including 6 with Best disease who was confirmed by ophthalmoscopy and electrophysiological examination in whom 2 were affirmed as having homozygote of this mutation. Other 3 young family members with VMD2 gene mutation only had abnormal electro-oculogram manifestations.

结果Best病家系10个成员中，9人VMD2基因外显子2第223位碱基C-T颠换，其中6人通过眼底和眼电生理检查证实为Best病患者，2人为该突变的纯合子；另外有3个年轻成员虽然携带VMD2基因突变，临床上仅表现为眼电图的异常。

Structural matter drops to hit water with fixed rate phut from certain height, inchoate and main the structure that attacks water process in the light of phut is answered begin research, and press mutation of field of force and Xing Bo to wait to study however to entering the underwater after water less, and add with each passing day as large bridge and marine project much, the construction in these projects and the phenomenon that phut of large construction content also appeared to hit water in use process, like Guangdong 9 rivers big bridge is bumped to break down after collapsing, large area bridge floor falls into surface to wait, the meeting such as mutation of field of pressure of the underwater after this kind of phut hits water and Xing Bo is right all round structural products gives birth to certain influence, evaluate this kind of influence to have real project sense to construction and design.

结构物从一定高度落下以一定速度砰击水面，早期主要针对砰击入水过程的结构响应开展探究，而对入水后水下压力场突变和兴波等却探究较少，而随着大型桥梁和海洋工程日渐增多，在这些工程的施工和使用过程中也出现了大型结构物砰击入水的现象，如广东九江大桥被撞垮塌后大面积桥面落入水面等，这种砰击入水后水下压力场突变和兴波等会对四周结构物产生一定影响，评价这种影响对施工和设计具有现实的工程意义。

Then it compares these operators' performance through its convergence quality,and it demonstrates that this over-flow dealing method is effective through a group of experiments,the mutation operators used in single-objective optimization have the respectable distribution to polynomial mutation and achieve better convergence quality.

通过一组实验表明这种越界处理方法是非常有效的，单目标优化中的这些变异算子具有与多项式变异算子相当的分布性，同时取得了更好的收敛性能。

Mutation breeding of Phanerochaete chrysosporium by UV-light and nitrite was investigated, and the capability of decolorization to Safranine T and dye of high concentration after induced mutation was tested..

通过紫外线照射和亚硝酸盐两种诱变手段对黄孢原毛平革菌进行了诱变育种实验，进而考察了诱变后筛选出的优势菌对高浓度染料、番红花红的降解情况，并以此对比评价了两种诱变方法的诱变效果。

Because of the great differences of inducing conditions between space and on the earth, space mutation has exhibited the wide application prospect in breeding, but the studies on quality traits by space mutation are singular.

突变体MLA-1与原亲本的SSR多态性比较研究的结果表明，MLA-1和原亲本"美香占"在DNA水平上表现出明显的不同，选用180对微卫星引物对MLA-1和原亲本进行SSR分析，有22.8%的扩增产物在两个材料间表现出了多态性，说明空间诱变后发生多位点的突变。

In order to further investigate the pathologic role of HOXD13 p.Q317R mutation during embryonic development and elucidate the molecular mechanism of typeⅤsyndactyly,we constructed mouse Hoxd13 Q50R replacement gene targeting vector,which will contribute to future generation of mouse model carrying the corresponding mutation.

为进一步研究HOXD13 p.Q317R突变体的功能及其导致V型并指的致病机制，我们成功构建了针对此点突变的小鼠Hoxd13 Q50R置换型基因打靶载体，为建立此点突变的小鼠模型奠定了基础。

Result No point mutation of HBD of hPR gene was detected in control group except one with point mutation in trace.

结果 对照组除1例有痕迹量的孕激素受体基因点突变外，其余9例均无点突变存在。

To clone new disease gene of CMT, many myelin and myelin-related gene had been analysised by homologue searching. Quaking mouse, one of the mutation mouse with the clinic feature similar to Trembler mouse (the gene mutation mouse of PMP22) with the characterization of demylination in both the central and the peripheral nervous system, its disease gene had just been cloned accession No.

为进一步克隆新的CMT致病基因，在分析出CMT已克隆的基因均为与髓鞘有关的基因后，通过筛选有关髓鞘基因，我们发现，quaking基因突变小鼠因髓鞘形成障碍而出现震颤，其中枢和周围神经均有脱髓鞘，类似于PMP22基因突变鼠"Trembler"的临床表现。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。