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相关概念视频

What is an Electrochemical Gradient?01:26

What is an Electrochemical Gradient?

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Adenosine triphosphate, or ATP, is considered the primary energy source in cells. However, energy can also be stored in the electrochemical gradient of an ion across the plasma membrane, which is determined by two factors: its chemical and electrical gradients.
The chemical gradient relies on differences in the abundance of a substance on the outside versus the inside of a cell and flows from areas of high to low ion concentration. In contrast, the electrical gradient revolves around an...
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Two-dimensional Gel Electrophoresis01:22

Two-dimensional Gel Electrophoresis

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Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
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相关实验视频

Updated: Jul 8, 2025

A Gradient-generating Microfluidic Device for Cell Biology
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A Gradient-generating Microfluidic Device for Cell Biology

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使用二维金字塔阵列生成多重度梯度.

Xinlei Qi1, Qin Zhou1, Xuejin Li1

  • 1Department of Engineering Mechanics, State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China.

Analytical chemistry
|December 17, 2023
PubMed
概括

这项研究引入了一个微流体网络,用于创建精确,可适应的度梯度. 这项技术使得高效,大规模的生物化学实验能够在最小的反应剂体积下进行.

科学领域:

  • 生物化学 生物化学
  • 微流体学 微流体学
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 度异质性在生物化学过程中很常见.
  • 产生精确的度梯度对于实验至关重要.
  • 现有的方法可能缺乏适应性和可扩展性.

研究的目的:

  • 为了呈现一个高密度的金字塔阵列微流体网络.
  • 为了使多重度梯度的有效和精确生成.
  • 为了促进适应性,大规模的反应,低反应剂体积.

主要方法:

  • 高密度金字塔阵列微流体网络的设计.
  • 调节反应物速度和度以控制梯度.
  • 数字模拟大众运输和基于机器学习的预测.
  • 使用度依赖碳酸结晶的演示.

主要成果:

  • 微流体网络精确地产生了多个度梯度.
  • 梯度分布是可自适应调节的.
  • 在动态变化过程中,室内均度保持不变.
  • 该系统可确定反应室数量和操作条件.

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Generation of Heterogeneous Drug Gradients Across Cancer Populations on a Microfluidic Evolution Accelerator for Real-Time Observation
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Generation of Heterogeneous Drug Gradients Across Cancer Populations on a Microfluidic Evolution Accelerator for Real-Time Observation

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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration
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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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相关实验视频

Last Updated: Jul 8, 2025

A Gradient-generating Microfluidic Device for Cell Biology
11:05

A Gradient-generating Microfluidic Device for Cell Biology

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Generation of Heterogeneous Drug Gradients Across Cancer Populations on a Microfluidic Evolution Accelerator for Real-Time Observation
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Generation of Heterogeneous Drug Gradients Across Cancer Populations on a Microfluidic Evolution Accelerator for Real-Time Observation

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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration
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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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结论:

  • 开发的设备提供了一个高效的混合和可适应的缩平台.
  • 它非常适合用于高吞吐量和多重反应.
  • 这项技术提升了生化研究中的实验能力.