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関連する概念動画

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.
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Gene Flow02:39

Gene Flow

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Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
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Cell Migration01:19

Cell Migration

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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.
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Cell Migration01:09

Cell Migration

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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
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Quantifying Work02:30

Quantifying Work

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As a system undergoes a change, its internal energy can change, and energy can be transferred from the system to the surroundings, or from the surroundings to the system.
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Transport Number01:31

Transport Number

230
The transport number is the fraction of the total current carried by an ion in an electrolyte solution. It is defined as the ratio of the current carried by a specific ion to the total current flowing through the solution. The transport number, t, is central to understanding ionic mobility, which describes how fast an ion moves under the influence of an electric field. This link connects the physical behavior of ions in solution to the chemical processes that occur during electrochemical...
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関連する実験動画

Updated: May 1, 2026

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

Published on: May 13, 2012

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世界的な国際的移住の流れを定量化する.

Guy J Abel1, Nikola Sander

  • 1Wittgenstein Centre for Demography and Global Human Capital (IIASA, VID/ÖAW, WU), Vienna Institute of Demography (Austrian Academy of Sciences), Wohllebengasse 12-14, Vienna, 1040, Austria.

Science (New York, N.Y.)
|March 29, 2014
PubMed
まとめ
この要約は機械生成です。

世界的な移民の流れは1995年以来,世界人口の0.6%で安定しており,南西アジア,ラテン・北アメリカ,アフリカ内での主要な移動が観察されています. この研究は,包括的な二国間フローデータを提供しています.

さらに関連する動画

Analysis of Shear Flow-induced Migration of Murine Marginal Zone B Cells In Vitro
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Analysis of Shear Flow-induced Migration of Murine Marginal Zone B Cells In Vitro

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Quantitative Immunofluorescence to Measure Global Localized Translation
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Quantitative Immunofluorescence to Measure Global Localized Translation

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関連する実験動画

Last Updated: May 1, 2026

Quantitative Analysis of Random Migration of Cells Using Time-lapse Video Microscopy
07:27

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

Published on: May 13, 2012

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Analysis of Shear Flow-induced Migration of Murine Marginal Zone B Cells In Vitro
08:31

Analysis of Shear Flow-induced Migration of Murine Marginal Zone B Cells In Vitro

Published on: November 26, 2018

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Quantitative Immunofluorescence to Measure Global Localized Translation
09:13

Quantitative Immunofluorescence to Measure Global Localized Translation

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科学分野:

  • デモグラフィー デモグラフィー 人口統計
  • 社会学 社会学 社会学とは
  • 国際関係 国際関係

背景:

  • 国際移住に関する既存のデータは,現在の世界的な流動パターンを不十分に反映している.
  • グローバルな人口移動を理解するために,包括的で二国間の移民の流れデータは極めて重要です.

研究 の 目的:

  • 1990年から2010年までの196カ国間の二国間国際移住の流れに関する包括的なデータセットを提示する.
  • グローバルな移住の流れの強度,パターン,傾向を分析する.

主な方法:

  • 二十年 (1990-2010年) をカバーする196カ国における二国間フローデータを利用した.
  • 5年の間隔で世界人口の割合として,移住の強度を分析した.

主要な成果:

  • グローバルな5年間の移民の流れの強度は,1995年以来,世界人口の約0.6%で安定しています.
  • 特定された主要な移住回廊:南アジアと西アジア,ラテンから北米,アフリカ内移動.
  • このデータは,各国の移民動向の文脈的な解釈を容易にする.

結論:

  • 世界的な移住の強度は,過去20年間にわたって顕著な安定を示しています.
  • 二国間のデータは,国内および地域における移住の動態を理解するために不可欠な文脈を提供します.
  • 特にアジア,アメリカ,アフリカにおける地域的な移住パターンは依然として顕著である.