查询词典 migration

With the investigation of the domestic and foreign literature systematically, the bases on the domestic and foreign present research and the comprehensive utilizations of the various knowledge of fluid mechanics in porous medium, reservoir engineering, mathematical physics, perforation completion, numerical simulation and so on, this article takes numerical simulation of gas reservoir of water solubility as the research aim which has completed following research works and obtained the corresponding research results: it analyzes the nature of the Water-soluble gas and formation water as well as the influent factors of the solubility through the study of massive materials; It establishes mathematical models three-dimension, the dual medium, the gas-water phase through the way of finite difference in the migration of water-soluble gas, which describes the entire process of release, migration and production in formation, where it considered the problems of variable bubble point; According to the numerical models of gas reservoir of water solubility it provides solution procedure that based on black oil model; It discovers that there will obtain the good effects in the lowly speed of development through simulation; the reinjection of formation water may largely enhance the produce degree of water-soluble gas when we consider reinjection in simulator; It considered the influence of perforated completion on development so as to increase the simulator"s versatility, It discovers that the simulator may reflect the conditions of development when we exanimate he simulator"s reliability with the empirical datum.

本文以水溶性气藏数值模拟研究为研究目标，在系统调研国内外文献、深入分析国内外研究现状的基础上，综合利用渗流力学、油气藏工程、数学物理方法、射孔完井以及数值模拟理论等多方面的知识，完成了以下研究工作并取得相应的研究成果；①通过对大量的资料调研，分析了水溶气、地层水性质、储层地质性质以及影响气体在水中溶解度的因素。②考虑到由于高压产生的大量水力裂缝，采用有限差分方法建立水溶气运移的三维、双重介质、气-水两相全隐式数学模型，该模型描述了水溶气在地层中的释放、运移和采出的整个过程。③在原有黑油模型的基础上，根据水溶性气藏数值模型编制了该数值模型的求解程序，该程序可以求解单重、双重介质两种情况。④通过模拟不同开采速度对水溶气开发效果的影响，发现开采速度较慢的时候可以取得较好的开采效果。⑤在模拟器中考虑了注水对水溶性气藏开发的影响，地层水回注可以大幅度提高水溶气的采出程度。⑥为增加模拟器的通用性，在模拟器中考虑了射孔完井方式对开采的影响。⑦检验模拟器计算的可靠性，发现在使用实验数据对水溶性气藏进行模拟时，模拟器可以很好的反映气藏开发的状态。

The coastal wetlands in the Yellow Sea region are important stopover sites for shorebirds along the East Asian-Australasian Flyway. Study on the stopover ecology and migration strategies of shorebirds will be helpful for understanding the mystery of bird migration, and for making conservation strategies on the migrants.

黄海区域为东亚-澳大利亚迁徙路线上鸻鹬类重要的迁徙停歇地，了解鸟类在该区域的生态及生物学特征，阐明鸟类对迁徙停歇地的利用模式和迁徙对策，了解迁徙鸟类对迁徙活动的适应机制，对于进一步认识鸟类的迁徙活动，并制定科学的保护措施具有帮助。

Sherrie Gaskin, Manager Business Migration - Immigration SA, also spoke about the value of business migration and of the SA Premier's upcoming trade mission to China.

南澳州政府移民事务处-商业移民经理 Sherrie Gaskin 女士的讲话也对商业移民做出了很高的评价，同时还介绍了州长即将赴中国访问信息。

Water-rock interaction demonstrates that, a gold-boring formation , i. e., a set of light metamorphic clastic gritstone, sandy slate, and tuffaceous slate in Wuqiang Runnel Formation, Ban Stream Group, act as the source of gold deposits in South-West Hunan. The gold is originally derived from volcanic eruption materials in Wuling-Xuefeng period; for the typical single gold deposit such as Mobin, which is short of sulphide, chlorine is very important in the metallogenic process; sulphur and chlorine perform as the major negative ions to form complex ions with Au throughout the gold activation and migration movement. The complex ion of chlorine and gold may keep stable in a wide range of temperature; the physical-chemical conditions in typical geothermal fluid system are of deciding significance for gold activation, migration and precipitation.

特定体系的水岩实验证实了漠滨及整个湘西南金矿的成矿元素Au和伴生元素主要源于赋矿围岩-板溪群五强溪组的一套浅变质碎屑砂岩、砂质板岩和凝灰质板岩；首次突破传统认识，证明氯在中低温热液体系中能与Au形成稳定络合物的形式进行运移，因此氯在本区Au成矿过程中起着相当重要的作用；成矿热液流体中Au主要以金硫、金氯络合物形式在溶液中迁移，阴离子∑S、Cl〓对金的活化、迁移及沉淀起主导作用，Au的伴生元素As、Sb在热液体系中与Au形成金锑、金砷络合物有利于金的进一步活化、迁移及沉淀；中低温热液流体成矿过程中，体系的物理化学参数对Au的活化、迁移及沉淀富集起决定性作用。

Interprovincial migration, which is a kind of long distance migration, is a focus of scholars in this field.

人口迁移是人口学三种基本的人口变动之一，一直都是人口学研究的一个主要内容。

In this aspect, researchers in China have done a great deal of work, however since interprovincial migration is a reaction to differences among provinces, different periods of time will have their own influences on the migration characteristics.

省际人口迁移作为一类长距离的迁移，也成为了学者们关注的一个重点。在这方面我国学者做出大量的研究工作。

The article used double-logarithmic model of migration to analyze reasons of interprovincial migration, basing on the fifth population census.

本文的创新之处在于：一、以省际人口流动为例应用双对数模型对人口流动进行实证分析。

So inter-area migration becomes the leading pattern and main composing in interprovincial migration.

这使跨地带人口迁移成为省际人口迁移的主要模式和重要组成部分。

Methods The model of intravasation migration of cancer cell in vitro was used. The fibrosarcoma cell HT1080 was labelled with fluorescence, and the fluorescence guantities in 24-pore plate through collagen membrane and HUVEC single cells layer were detected in different time to eveluate the intravasation migration of cancer cell.

利用体外癌细胞向血管内游走模型，将纤维肉瘤细胞HT1080经过荧光标记，通过测定不同时间穿过胶原层及HUVEC单细胞层落到24孔板内的荧光量来定量评价瘤细胞血管内的游走情况。

How to calculate the synthesis operator is the key problem of controlled illumination prestack depth migration. In this paper the inverse time focusing operator is synthesized based on the traveltime calculation method of finite difference approach, and with this synthesis operator the authors calculate the focusing point controlled illumination prestack depth migration using Fourier finite difference. The test results of Marmousi model show its effectiveness and the great advantage of improving computational efficiency.

进行控制照明叠前深度偏移的关键是合成算子的选择，笔者基于有限差分的走时计算方法合成了逆时聚焦算子，基于该合成算子利用傅里叶有限差分法进行了聚焦点控制照明叠前深度偏移，针对Marmousi模型的试算结果表明了该方法的有效性及其在提高计算效率方面的巨大优势。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。