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関連する概念動画

Phase Transitions02:31

Phase Transitions

23.3K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
23.3K
Phase Transitions: Sublimation and Deposition02:33

Phase Transitions: Sublimation and Deposition

20.3K
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
20.3K
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

15.3K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
15.3K
Phase Transitions: Vaporization and Condensation02:39

Phase Transitions: Vaporization and Condensation

21.6K
The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules...
21.6K
Phase Diagrams02:39

Phase Diagrams

50.4K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
50.4K
Properties of Transition Metals02:58

Properties of Transition Metals

30.1K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
30.1K

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関連する実験動画

Updated: Feb 13, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
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Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

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発達中の組織相変化: 単なるメカニズム以上のもの

Laura Rustarazo-Calvo1,2, Karen Grace Soans1, Nicoletta I Petridou1

  • 1European Molecular Biology Laboratory Heidelberg, Developmental Biology Unit, Meyerhofstrasse 1, 69117 Heidelberg, Germany.

Development (Cambridge, England)
|February 12, 2026
PubMed
まとめ
この要約は機械生成です。

胚の組織の段階移行は,内部のシグナルによって駆動され,発達を積極的に形作ります. これらの移行は,メカニズムとシグナリングを統合し,分子レベルから組織レベルまで,正確で堅牢なパターン形成を保証します.

キーワード:
胚形成とは,胚の形成である.フィードバックのフィードバックはフィードバックです.メカノケミカルシグナリングモルフォゲネシス (Morphogenesis) モルフォゲネシスとはフェーズトランジション フェーズトランジション

さらに関連する動画

Optogenetic Phase Transition of TDP-43 in Spinal Motor Neurons of Zebrafish Larvae
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Optogenetic Phase Transition of TDP-43 in Spinal Motor Neurons of Zebrafish Larvae

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ALS - Motor Neuron Disease: Mechanism and Development of New Therapies
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ALS - Motor Neuron Disease: Mechanism and Development of New Therapies

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関連する実験動画

Last Updated: Feb 13, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
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Optogenetic Phase Transition of TDP-43 in Spinal Motor Neurons of Zebrafish Larvae
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ALS - Motor Neuron Disease: Mechanism and Development of New Therapies
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ALS - Motor Neuron Disease: Mechanism and Development of New Therapies

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科学分野:

  • 発達生物学 発達生物学とは
  • バイオフィジックス 生物物理学
  • 細胞生物学 細胞生物学

背景:

  • 組織形態変生は,ダイナミックな変形性パターンに依存しています.
  • 物質相移行は,細胞特性 (制御パラメータ) の重要な変化時に発生します.
  • 非生物の受動的変異とは異なり,組織変異は内部生物学的シグナルによって活発に駆動されます.

研究 の 目的:

  • 発達における胚組織の段階移行の役割を探求する.
  • 組織力学,機械化学信号,およびパターン形成の間のリンクを調査する.
  • これらの移行が成長と細胞の運命の仕様をどのように制御するかを理解する.

主な方法:

  • 組織力学と発達生物学に関する既存の文献のレビュー.
  • カノニカル (力学を中心とした) と非カノニカル (力学を超えた) 役割の分析.
  • 材料科学と発達シグナルからの概念の統合.

主要な成果:

  • 胚の組織の相変遷は,変形性を積極的に調節し,信号伝達経路と機械的変化を統合する.
  • これらの移行は,複雑で自己組織的で適応的な時空パターンの形成を指示します.
  • 段階移行は,発達的精度のために分子,細胞,および組織レベルのプロセスを組み合わせます.

結論:

  • 胚の組織の相変異は,発達中のシステムにおける時空結合の重要な戦略である.
  • 彼らは,多様な生物学的プロセスを統合することによって,発達的な堅強さと精度を促進します.
  • これらの移行は,胚形成の過程で成長制御と細胞運命を決定する上で重要な役割を果たします.