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相关概念视频

Nuclear Fusion02:45

Nuclear Fusion

The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
Gas Chromatography: Sample Injection Systems01:08

Gas Chromatography: Sample Injection Systems

In gas chromatography, the sample is introduced as a vapor plug into the carrier gas stream for high efficiency and resolution. A microsyringe injects the sample solution into a heated sample port, vaporizing it and mixing it with the carrier gas. This process is important to ensure the sample is properly prepared for analysis. Thermally sensitive samples can be injected directly into the column and volatilized by slowly increasing the column temperature.
Two primary injection methods are used...

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相关实验视频

Updated: May 10, 2026

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons
13:39

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons

Published on: December 11, 2009

一个MINI粉末注入器 (MINPIN) 用于智能托卡马克.

S Abe1, A Luby1,2, A Rodriguez-Gonzalez3

  • 1Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.

The Review of scientific instruments
|March 5, 2026
PubMed
概括

一种新的粉末注入器,MINI粉末注入器 (MINPIN),已开发用于化在小尺寸比托卡马克 (SMART) 聚变装置. 该系统可以控制的输送,以减少等离子体杂质并提高性能.

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Last Updated: May 10, 2026

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons
13:39

Intranuclear Microinjection of DNA into Dissociated Adult Mammalian Neurons

Published on: December 11, 2009

Picoinjection of Microfluidic Drops Without Metal Electrodes
09:20

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Published on: April 19, 2014

Simultaneous Electrophysiological Recording and Micro-injections of Inhibitory Agents in the Rodent Brain
07:52

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Published on: July 7, 2015

科学领域:

  • 核聚变能源的研究.
  • 血物理学的等离子体物理学
  • 材料科学是一种材料科学.

背景情况:

  • 托卡马克设备需要墙壁调节以尽量减少等离子体杂质.
  • 化是减少辐射损失和提高等离子体稳定性的关键技术.
  • 现有的粉末注射系统可能缺乏对特定托卡马克几何形状的精确控制.

研究的目的:

  • 设计和描述一个新的粉末注入器用于化在智能tokamak.
  • 为了实现可控的粉的输送,用于有效的墙壁涂层.
  • 为了研究化对低比例图像的等离子体性能的影响.

主要方法:

  • 开发了使用引力传递和压电刀片的MINI粉末注入器 (MINPIN).
  • 在实验室环境下 (1-10 mg/s) 校准粉末下降速度.
  • 在SMART等离子体中注入的操作场景的模拟和估计.

主要成果:

  • 成功设计并对MINPIN系统进行实验室表征.
  • 达到适用于受控化的校准下降率.
  • 对于高效的粉末剥离和沉积的证明潜力.

结论:

  • 在SMART托卡马克中,MINPIN系统是精确化的可行解决方案.
  • 控制的输送可以显著减少内在杂质,增强血封闭.
  • 这项技术通过改进的等离子体壁相互作用管理,有助于推进核聚变能源研究.