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相关概念视频

Prestressed Concrete01:20

Prestressed Concrete

97
Prestressed concrete is a construction technique designed to enhance the strength and durability of concrete structures. This method involves the application of a pre-set tension to high-strength steel strands used as reinforcement before the concrete is subjected to its working loads. The primary aim of prestressing is to place the concrete in a state of compression, in order to counteract the tensile forces it will experience in service. This pre-compression helps prevent crack formation in...
97
Posttensioned Masonry Walls01:15

Posttensioned Masonry Walls

104

Post-tensioned masonry walls use high-strength steel rods or flexible tendons to enhance the strength and efficiency of masonry structures. These elements are securely anchored to the foundation and extend vertically either within the cores of the masonry units or between the masonry wythes. The construction process involves building the wall with these tensioning elements in place and allowing the mortar to fully cure.
Following the curing process, the tensioning begins. Steel rods are...
104

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相关实验视频

Updated: May 11, 2025

Controlled Strain of 3D Hydrogels under Live Microscopy Imaging
07:41

Controlled Strain of 3D Hydrogels under Live Microscopy Imaging

Published on: December 4, 2020

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具有预应力延伸性结构的水凝.

Bin Xue1,2, Xu Han3, Haoqi Zhu3

  • 1Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing, China. xuebinnju@nju.edu.cn.

Nature communications
|April 16, 2025
PubMed
概括
此摘要是机器生成的。

研究人员通过使用酶诱导的晶体生长来设计生物模拟的延伸性水凝. 这些坚固,适应性强的材料模仿自然结构,为组织工程应用提供高刚性和性.

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Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
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Bioprinting Cellularized Constructs Using a Tissue-specific Hydrogel Bioink
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相关实验视频

Last Updated: May 11, 2025

Controlled Strain of 3D Hydrogels under Live Microscopy Imaging
07:41

Controlled Strain of 3D Hydrogels under Live Microscopy Imaging

Published on: December 4, 2020

3.4K
Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning
12:07

Fabricating Degradable Thermoresponsive Hydrogels on Multiple Length Scales via Reactive Extrusion, Microfluidics, Self-assembly, and Electrospinning

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Bioprinting Cellularized Constructs Using a Tissue-specific Hydrogel Bioink
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Bioprinting Cellularized Constructs Using a Tissue-specific Hydrogel Bioink

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科学领域:

  • 材料科学 材料科学 材料科学
  • 生物材料工程 生物材料工程
  • 生物物理学的生物物理.

背景情况:

  • 十分位结构,包括孤立的压缩元件和连续拉伸网络,是生物系统的基础,如细胞外矩阵和细胞骨.
  • 这些自然结构为动态的生物功能提供了必要的非互惠的机械特性.

研究的目的:

  • 开发一种由生物机械化学原理启发的合成方法,用于设计具有延伸度架构的水凝.
  • 为了创建强大的和适应性的仿生材料,用于先进的应用.

主要方法:

  • 在预先形成的聚合物网络中利用在位酶诱导的氨基酸晶体生长.
  • 在预应力聚合物矩阵中实现了微晶"棒"的层次集成,模仿了自然的张分度.

主要成果:

  • 工程水凝具有高刚度 (拉力模块高达30MPa) 和破裂性 (2600J m-2) 的张密度架构.
  • 这些材料保持高含水量 (>80%) 并显示双模块行为,拉力压缩模块比为13.
  • 设计成功地平衡了机械力,反映了自然的延伸性结构.

结论:

  • 生物模拟性延伸性水凝表明了创造先进材料的有希望的策略.
  • 这些材料具有适用于组织工程和其他需要强大,适应性机械行为的领域的适用性.