Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Analysis of ICNIRP 2020 Basic Restrictions for Localized Radiofrequency Exposure in the Frequency Range above 6 GHz.

Health physics·2022
Same author

Steady state temperature rise in multilayered tissue due to arbitrary periodic SAR using finite difference FFT and transfer function method.

Biomedical physics & engineering express·2021
Same author

Model of Steady-state Temperature Rise in Multilayer Tissues Due to Narrow-beam Millimeter-wave Radiofrequency Field Exposure.

Health physics·2019
Same author

Magnetic Field Reference Levels for Arbitrary Periodic Waveforms for Prevention of Peripheral Nerve Stimulation.

Health physics·2017
Same author

Cylindrical waveguide electromagnetic exposure system for biological studies with unrestrained mice at 1.9 GHz.

Health physics·2012
Same author

Dosimetry evaluation of a cylindrical waveguide chamber for unrestrained small rodents at 1.9 GHz.

Bioelectromagnetics·2012

相关实验视频

Updated: May 8, 2026

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
07:53

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation

Published on: September 13, 2015

21.8K

基于波形形状的周围神经刺激值和指导限值的含义

Gregory B Gajda1

  • 1Non-ionizing Radiation Physics Division, Consumer and Clinical Radiation Protection Bureau, Health Canada, 775 Brookfield Road, Ottawa, Ontario Canada, K1A 1C1.

Health physics
|February 14, 2025
PubMed
概括

为非正弦波形产生了新的暴露极限,为电场和磁流密度提供现有的正弦极限的倍数. 这些更新的指南考虑了波形特征,提高了对电磁场暴露的安全标准.

科学领域:

  • 生物物理学的生物物理.
  • 电磁主义 电磁主义
  • 计算建模 计算建模

背景情况:

  • 目前的曝光标准主要涉及形波形.
  • 非正弦波形在各种应用中普遍存在,需要特别考虑安全性.
  • 了解周围神经刺激值对于设定准确的暴露限值至关重要.

研究的目的:

  • 为非正弦波形导出诱导的内部电场和对外部磁流密度的参考水平的基本限制.
  • 确定这些极限作为现有的正弦波形极限的倍数.
  • 研究波形特征对刺激值的影响.

主要方法:

  • 利用电刺激定律来确定外围神经刺激值.
  • 使用空间扩展非线性节点计算模型进行值计算.
  • 导出值比率 (非侧面与侧面) 来确定新的暴露限值.

主要成果:

  • 非侧边形基本限制和参考水平是作为侧边形极限的倍数得出的.
  • 值比率显示,对于快速上升的平顶波形而言一致,但对于连续的正弦波形而言不一致.
  • 非正弦极限表现出类似于正弦极限的频率依赖关系,波形依赖的过渡频率.

更多相关视频

Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity
07:28

Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity

Published on: January 21, 2017

6.9K
Laboratory Administration of Transcutaneous Auricular Vagus Nerve Stimulation taVNS: Technique, Targeting, and Considerations
06:31

Laboratory Administration of Transcutaneous Auricular Vagus Nerve Stimulation taVNS: Technique, Targeting, and Considerations

Published on: January 7, 2019

38.3K

相关实验视频

Last Updated: May 8, 2026

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation
07:53

Assessment of Neuromuscular Function Using Percutaneous Electrical Nerve Stimulation

Published on: September 13, 2015

21.8K
Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity
07:28

Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity

Published on: January 21, 2017

6.9K
Laboratory Administration of Transcutaneous Auricular Vagus Nerve Stimulation taVNS: Technique, Targeting, and Considerations
06:31

Laboratory Administration of Transcutaneous Auricular Vagus Nerve Stimulation taVNS: Technique, Targeting, and Considerations

Published on: January 7, 2019

38.3K

结论:

  • 导出的非侧面暴露极限在功能上与侧面暴露极限相似,但根据波形特征进行了调整.
  • 快速上升的波形允许增加极限,因为与流量密度上升时间的反向关系.
  • 非侧面基准水平明显低于过渡频率以上的侧面基准水平,这表明安全边际有所提高.