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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

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Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
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Methods of Sterilization I: Physical Methods01:29

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As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation.
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
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相关实验视频

Updated: Jun 21, 2025

Treating Surfaces with a Cold Atmospheric Pressure Plasma using the COST-Jet
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便携且价格合理的冷空气等离子源具有优化的杀菌效果.

Myron Klenivskyi1, Josef Khun1, Laura Thonová1,2

  • 1Department of Physics and Measurements, University of Chemistry and Technology, Prague, Czech Republic.

Scientific reports
|July 10, 2024
PubMed
概括

这项研究介绍了一种低成本的手持式冷空气等离子体源,用于生物医学. 该设备有效地使广泛的细菌,真菌和酵母无活化,主要是由于臭氧等反应性氧物种.

关键词:
具有杀菌作用的细菌.冷空气等离子体冷空气等离子体.冠状病毒的释放.离子风是一种离子风.反应性氧和物种的反应性氧和物种.

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Last Updated: Jun 21, 2025

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科学领域:

  • 生物医学工程 生物医学工程
  • 等离子体物理学的物理学
  • 微生物学 微生物学

背景情况:

  • 冷大气等离子体 (CAP) 提供了有前途的生物医学应用.
  • 开发可访问和具有成本效益的CAP设备对于更广泛的采用至关重要.
  • 了解CAP抗菌作用的机制至关重要.

研究的目的:

  • 报告生物医学应用的低成本,手持式冷空气等离子体源的开发和特征.
  • 为了评估这种血源对各种微生物的杀菌效果.
  • 调查反应性物种在观察到的抗微生物效应中的作用.

主要方法:

  • 使用随时可用的组件构建一个简单的,低功率 (1.4 W) 的冠状释放等离子源.
  • 使用大肠杆菌 (Escherichia coli) 优化血源以获得最大的杀菌效果.
  • 测试抗菌素对黄金葡萄球菌,Pseudomonas aeruginosa,Candida albicans,Trichophyton interdigitale和Deinococcus radiodurans的有效性. 这两种类型的抗菌素的有效性.
  • 分析等离子体产生的长寿命反应物种 (臭氧,氧化,过氧化,亚酸盐,酸盐).

主要成果:

  • 开发的血源在几分钟内显示出所有测试的微生物的显著失活 (105-107 CFU减少).
  • 观察到高效率的格拉姆阳性细菌,格拉姆阴性细菌,酵母和微真菌.
  • 在臭氧度和杀菌作用之间发现了强烈的相关性,这表明反应性氧物种是主要的抗菌剂.

结论:

  • 这种廉价的手持式冷空气等离子体源对广泛的病原体具有有效作用.
  • 该研究提供了对冠状泄漏的杀菌效应和反应性物种形成的全面分析.
  • 这种可访问的技术有可能用于各种生物医学和杀菌应用.