查询词典 migration

We are interested in the molecular mechanisms underlying neuronal migration and our work published in 1999 indicates that there are diffusible molecules in the brain which can guide the direction of migrating neurons; specifically, a secreted protein called Slit is repulsive to neurons and its concentration gradient guides neuronal migration.

我们在分子水平对这个问题进行了研究。1999年发表的结果给出这样一个答案：脑内存在导向性分子，可以指导神经细胞的迁移方向；具体的发现是，一个叫Slit的分泌性蛋白质，对神经细胞有排斥性作用，它的浓度梯度指导神经细胞迁移的方向。

Various physical and chemical reactions of oil and gas were inevitably occurred with the contacting rock on the process of migration. The physical and chemical characters of the petroleum and the reservoir were induced to change disciplinarily. So the rules were used to research the direction and the route of petroleum migration.

油气在地下运移过程中，将不可避免的与围岩发生各种物理化学反应，导致沿运移的方向上油气物理化学性质和储层某些性质规律性的变化，因此研究中可以利用这些变化对油气运移方向与路径进行分析。

The analyses indicate that some points from the specific phenomenon of sedimentation to the expansion of knowledge of source rocks, from Reflection on the gradual slow migration get mechanisms of hydrocarbon quick migration and reservation, from conventional fractural distribution to the possible newly exploration area produced by rapid deformation of fracture, direction from drilling trap to the possible condition of trap damaged, which causes great influence on the Oil and Gas Exploration.

分析认为，从特异沉积现象引出的烃源岩的扩展性认识、从渐变论的缓慢运移中反思得到的快速运移成藏、从常规的裂缝分布到快速变形过程可能产生的新勘探区域、从单纯钻进圈闭到解析可能的圈闭破坏条件等，这些理论都可能对油气勘探产生重大影响。

Based on the study of hydrochemical characteristics of formation water, the distribution of palaeohydrodynamic field in main oil-gas migration period and its influence on hydrocarbon migration and accumulation in Gaoyou sag were discussed.

在地层水水化学特征研究的基础上，对高邮凹陷油气主运移期的古水动力场分布及其对油气运聚的影响进行了研究。

Influences of several factors on the image quality of the poststack migration are further investigated, including interstation spacing, noise level of the data, velocity model used in migration, and earthquake distribution (incident direction of source fields).

首先，考虑盐的浓度的影响，建立了天然气含有甲烷和丙烷两种组分的水合物形成的相变曲线，即温度和压力关系曲线，同时也建立了甲烷和丙烷两种组分天然气溶解度的加权关系。

Aim To observe the effects of Chlamydia pneumoniae infection on migration of endothelial cells, to investigate the interventive effect of Berberine on Chlamydia pneumoniae induced-endothelial cell migration and to explore its possible mechanism.

目的 观察肺炎衣原体感染对人血管内皮细胞迁移的影响，探讨黄连素对其干预作用及作用机制。

For all migration's excellent effects, it is now-says Jean-Christophe Dumont of the OECD-"less than clear what potential migration has for poverty relief" in future.

对于所有移民的卓越的功绩，现在用经济合作组织Jean-Christophe Dumont的话来说：在未来&移民对于缓解贫困所蕴含的潜力仍不明朗&。

For all migration's excellent effects, it is now—says Jean-Christophe Dumont of the OECD—"less than clear what potential migration has for poverty relief" in future.

虽然移民产生了积极的效果，但现在——经合组织的让·克里斯托弗·杜蒙表示——未来&移民对消除贫困有何作用仍不得而知。&

By the infiltration test of soil column, the author concludes that Cr and As has the following migration patterns by dynamic researches. 1 The absorption and migration of Cr and As in loessial soil relate to content of mucilaginous grain.

4通过土柱淋滤试验，从动态角度研究得出铬、砷在黄土中具有以下迁移规律及特点：①Cr、As在黄土中的吸附和迁移与土壤中的粘粒含量有关。

Fibroblast growth factor signaling guides mesodermal cell migration; however, we found some directed dorsal migration in an FGF receptor mutant, which suggests that additional signals are involved.

显微元细胞增长因子信号知道着中胚层的细胞迁移；但是，研究人员发现在突变FGF受体中存在着定向的背离迁移作用，这说明有更多的信号参与到了细胞的运动当中。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网