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相关概念视频

Migration00:53

Migration

8.1K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
8.1K
Cell Migration01:19

Cell Migration

5.2K
Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
5.2K
Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

4.9K
A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker...
4.9K
Role of Myosin in Cell Migration01:18

Role of Myosin in Cell Migration

2.4K
Myosins are multimeric motor proteins involved in various cellular processes such as migration, adhesion, and proliferation. Myosin II is the most common type in animal cells, which binds and cross-links actin filaments.
Myosin II  is a hexamer comprising two heavy chains with globular heads and coiled-coil tails, two regulatory light chains, and two essential light chains. The ATPase sites on the myosin heads hydrolyze ATP, and the released phosphate generates the force for contraction....
2.4K
Frustration and Conflict: Approach-Approach, Approach-Avoidance01:20

Frustration and Conflict: Approach-Approach, Approach-Avoidance

150
Frustration occurs when people are obstructed or prevented from achieving a desired goal or fulfilling a perceived need. For example, when someone's input is ignored in a discussion, it can lead to feelings of frustration. Conflict, however, arises from opposing interests, goals, or actions. Conflicts can take various forms based on the nature of these opposing desires or goals.
One common type of conflict is the Approach–Approach Conflict. In this case, a person faces two desirable...
150
Gene Flow02:39

Gene Flow

35.6K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.6K

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相关实验视频

Updated: Sep 13, 2025

A Simple Migration/Invasion Workflow Using an Automated Live-cell Imager
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A Simple Migration/Invasion Workflow Using an Automated Live-cell Imager

Published on: February 2, 2019

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武装冲突如何影响移民

Nathalie E Williams1, Michelle L O'Brien2, Xiaozheng Yao3

  • 1University of Washington, Seattle, WA 98195, USA.

Population and development review
|July 30, 2025
PubMed
概括
此摘要是机器生成的。

冲突移民是复杂的. 这项研究使用了基于尼泊尔数据的代理模型,发现虽然外移民率下降,但由于冲突而生活在该国以外的人口总数略有增加.

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Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy
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Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy

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A Cost Effective and Adaptable Scratch Migration Assay
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A Cost Effective and Adaptable Scratch Migration Assay

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相关实验视频

Last Updated: Sep 13, 2025

A Simple Migration/Invasion Workflow Using an Automated Live-cell Imager
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A Simple Migration/Invasion Workflow Using an Automated Live-cell Imager

Published on: February 2, 2019

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Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy
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Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy

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A Cost Effective and Adaptable Scratch Migration Assay
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A Cost Effective and Adaptable Scratch Migration Assay

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科学领域:

  • 计算社会科学 计算社会科学
  • 强迫移民研究 强迫移民研究
  • 进行冲突分析.

背景情况:

  • 有大量关于武装冲突期间移民的文献.
  • 关于冲突引发移民规模的关键政策相关问题仍未得到解决.
  • 了解人口动态对于分析与冲突有关的流离失所至关重要.

研究的目的:

  • 探索武装冲突造成的移民流动和人口数量的规模.
  • 在冲突期间连接个人的行为变化,以汇总迁移模式.
  • 解决有关冲突驱动人口流动的相关政策问题.

主要方法:

  • 使用基于代理的模型 (ABM),一种计算模拟方法.
  • 尼泊尔1996-2006年冲突时期的综合详细数据.
  • 将微观层面的行为变化与宏观层面的迁移动态联系起来.

主要成果:

  • 在冲突期间观察到平均外迁率的下降.
  • 主要归因于返回移民的减少.
  • 在冲突期间,在该国境外居住的移民数量略有增加.

结论:

  • 人口动态是理解冲突相关移民的重要组成部分.
  • 基于代理的建模为研究冲突引发的移民提供了有价值的框架.
  • 调查结果对有关冲突和流离失所的政策制定有影响.