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相关概念视频

The Fluid Mosaic Model01:34

The Fluid Mosaic Model

The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
Fluid Mosaic Model01:19

Fluid Mosaic Model

Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich with the analogy of...
Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the streamlines...
Steady Flow of a Fluid Stream01:27

Steady Flow of a Fluid Stream

Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
Streamlines, Streaklines, and Pathlines01:18

Streamlines, Streaklines, and Pathlines

A streamline represents the trajectory that is always tangent to the fluid's velocity vector at any given point. The velocity of a fluid particle is always directed along the streamline, ensuring the particle continuously follows the streamline's path. Streamlines are particularly useful for visualizing the overall direction of flow in a fluid system, and they provide an instantaneous representation of the flow's velocity field. In steady flow, where conditions do not change over time,...
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.

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Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases
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悬浮组织开放的微流体图案 (STOMP)

Amanda J Haack1,2, Lauren G Brown1, Alex J Goldstein3,4,5

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

bioRxiv : the preprint server for biology
|October 17, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了悬浮组织开放微流体模式 (STOMP),以创建多区域组织,以研究复杂接口的细胞收缩. 这种方法揭示了纤维状健康和骨关节组织的收缩动态变化.

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科学领域:

  • 机械生物学 机械生物学
  • 组织工程是组织工程.
  • 生物材料是一种生物材料.

背景情况:

  • 独立的组织对于研究细胞收缩至关重要.
  • 现有的方法缺乏模拟复杂组织接口的能力.
  • 需要先进的工具来研究疾病-健康和组织类型的边界.

研究的目的:

  • 开发一种用于创建多区域悬浮组织的新方法.
  • 为了研究复杂的组织接口,如纤维状健康和骨带边界.
  • 为了研究这些接口的变化的收缩动态.

主要方法:

  • 悬浮组织开放微流体图案 (STOMP) 使用开放的微流体和毛细血管钉.
  • 在独立的组织中,STOMP模式分区域.
  • 这种方法允许使用本地细胞外矩阵和4D材料在各种几何形状下生成组织.

主要成果:

  • STOMP成功地创造了多区域悬浮组织.
  • 与单区域对照相比,在纤维状健康的工程心脏组织中观察到改变的收缩动态.
  • 在骨关节结合体构造与单组织牙周关节结合体模型中注意到了差异性收缩性.

结论:

  • STOMP是一个多功能平台,用于生成有图案的,独立的组织.
  • 该方法有助于研究复杂的组织接口及其独特的收缩行为.
  • STOMP将悬浮组织功能与精确的模式结合起来,用于动态的,空间控制的机械生物学研究.