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相关概念视频

Self-Locking Screw01:16

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A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
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Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
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Aseptic techniques prevent contamination, ensure experimental accuracy, and protect researchers and microbial cultures. These techniques are essential in clinical, industrial, and research settings where sterility is required.Maintaining Sterility in Laboratory PracticesScientists maintain sterility by sterilizing tools with heat or chemicals, disinfecting work surfaces, and handling cultures in controlled environments. Working near an open flame or within a laminar flow hood reduces the risk...
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相关实验视频

Updated: Feb 4, 2026

An Intramedullary Locking Nail for Standardized Fixation of Femur Osteotomies to Analyze Normal and Defective Bone Healing in Mice
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关键锁商品自愈合共聚物

Marek W Urban1,2,3, Dmitriy Davydovich4,3, Ying Yang4,3

  • 1Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA. mareku@clemson.edu.

Science (New York, N.Y.)
|October 13, 2018
PubMed
概括

商品共聚物可以使用范德瓦尔斯力在损坏后自我修复,使其能够在没有外部干预的情况下进行多次恢复. 这种自我修复材料的突破为耐用,可修复的聚合物提供了新的途径.

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科学领域:

  • 材料科学
  • 聚合物化学

背景情况:

  • 自愈的材料可以从物理或化学损伤中恢复.
  • 现有的自我修复方法通常依赖于超分子或共价反,或封装反应剂.

研究的目的:

  • 调查商品共聚物的自我修复能力,特别是聚甲基酸/n-基酸 (pMMA/nBA).
  • 这种自我愈合机制是源于连锁的范德瓦尔斯力.

主要方法:

  • 机械损伤造成了p ((MMA/nBA) 共聚物.
  • 确定了有利于自我愈合的组合范围和共聚物拓.
  • 分析了连锁范德瓦尔斯力在促进愈合中的作用.

主要成果:

  • 在特定的交替/随机拓中,商品共聚物,特别是p ((MMA/nBA) 具有自我修复特性.
  • 自治是由于德瓦尔斯力形成的钥匙锁链接.
  • 这些材料在没有外部干预的情况下在机械损坏后显示了多个恢复周期.

结论:

  • 范德瓦尔斯力在特定的共聚物结构中提供了有效的自我愈合机制.
  • 这种方法避免了化学变化和外部刺激,提供了更简单,更强大的自我愈合解决方案.
  • 这些发现为在环境条件下开发先进的自我修复材料提供了一条新途径.