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関連する概念動画

Morphogenesis02:19

Morphogenesis

Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
Transformation of Plane Strain01:12

Transformation of Plane Strain

When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
Surface Tension01:24

Surface Tension

Surface tension is defined as the force per unit length (γ) acting along the surface of a liquid. It arises due to strong intermolecular forces of attraction. A molecule located inside the bulk of the liquid is surrounded by other molecules and experiences equal forces in all directions. However, a molecule at the surface experiences unbalanced forces because there are more neighboring molecules below than above. This creates a net inward force that pulls surface molecules toward the interior,...
Deformations in a Transverse Cross Section01:21

Deformations in a Transverse Cross Section

When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added together...
Bending of Curved Members - Neutral Surface01:16

Bending of Curved Members - Neutral Surface

In curved beams, unlike straight beams, the stress distribution across the cross-section is not uniform due to the beam's curvature. This non-uniformity arises because the neutral axis, where stress is zero, does not align with the centroid of the section. In a curved beam, the strain varies along the section as a function of the distance from the neutral axis.
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...

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Updated: May 31, 2026

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel
13:28

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Published on: August 8, 2017

ダイナミック・グラデント表面での組織変異制御

Wei Luo1, Muhammad N Yousaf

  • 1Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.

Journal of the American Chemical Society
|June 29, 2011
PubMed
まとめ
この要約は機械生成です。

研究者は,哺乳類の細胞の行動を時間と空間で制御するためにスマートな表面を作成しました. これらのダイナミックな表面は,高度な生物学的研究のために,細胞の粘着,組織の形成,および移動をガイドします.

さらに関連する動画

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo
08:19

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo

Published on: October 17, 2011

関連する実験動画

Last Updated: May 31, 2026

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel
13:28

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Published on: August 8, 2017

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo
08:19

Tracking Morphogenetic Tissue Deformations in the Early Chick Embryo

Published on: October 17, 2011

科学分野:

  • バイオマテリアル科学 バイオマテリアル科学
  • 細胞生物学 細胞生物学
  • 組織工学とは,組織工学のことです.

背景:

  • 哺乳類の細胞の行動を制御することは,組織工学と再生医療において極めて重要です.
  • 既存の方法では,細胞活動を誘導する際の空間的・時間的精度が欠けていることが多い.

研究 の 目的:

  • 哺乳類の細胞行動に対する正確な空間的および時間的な制御を可能にする新しいスマートな表面を開発する.
  • 細胞粘着,組織変形,および移動のためのダイナミックリガンド表面グラデントの使用を調査する.

主な方法:

  • 生物活性表面戦略と光電活性表面戦略の統合.
  • ダイナミックリガンド表面グラデーションの生成.
  • これらのグラデーションを利用して,哺乳類の細胞結合,組織形状,移動パターンに影響を与える.

主要な成果:

  • 哺乳類の細胞行動の空間的・時間的制御に成功したことが実証された.
  • ダイナミックリガンドグラデントが細胞結合と組織変異を調節する能力を示した.
  • 表面刺激に反応する制御された細胞および組織の移動を観察した.

結論:

  • スマート表面は,細胞と組織のダイナミクスを正確に制御するための強力なプラットフォームを提供します.
  • 開発された光電活性および生物活性表面統合は,細胞ベースの研究のための多用途のツールを提供します.
  • このアプローチは,組織工学の進歩と発達生物学を理解する上で重要な意味を持つ.