Falsaperla Rosaria, Spagnoli Giuseppe, Rossi Paolo
Department of Occupational Hygiene, National Institute of Occupational Safety and Prevention (ISPESL), Italy.
Int J Occup Saf Ergon. 2006;12(2):195-200. doi: 10.1080/10803548.2006.11076683.
Basic principles of reducing exposure to electromagnetic fields are reviewed in this article. Measures to reduce exposure can be divided into organisational/administrative and technical/engineering actions. Both strategies are briefly analysed and the basic principles of the theory of shielding are presented. A definition of shielding effectiveness (SE) is given, and the results from the general Transmission Lines Theory are presented. Practical situations of shielding static and time-varying electric and magnetic fields are discussed on the basis of the physical properties of the fields and of the shield.
本文回顾了减少电磁场暴露的基本原则。减少暴露的措施可分为组织/管理措施和技术/工程措施。对这两种策略都进行了简要分析，并介绍了屏蔽理论的基本原理。给出了屏蔽效能（SE）的定义，并介绍了一般传输线理论的结果。基于场和屏蔽的物理特性，讨论了屏蔽静态和时变电场及磁场的实际情况。
