A local hospital was interested in shielding some sensitive equipment and contemplated installing a shielded room. The room under consideration was the typical laminated wood core panel with galvanized steel on both surfaces, with a RF shielded door, honeycomb air vent panels and filters for ac power, telephone and any other signals, meeting the shielding effectiveness requirements of MIL-STD-2...

This paper presents The Electromagnetic Interference effect from power line noise in Multi Speciality Hospital to Bio-Medical signals. The study includes the design of Bio-Medical signal Generating circuits that is used to eliminate the power line noise from the signal. The Bio-Medical system basically is a combination of Instrumentation Amplifier, High pass filter, Low pass filter, and Notch f...

Sensing intrinsic cardiac electrical activity is essential for the function of pacemakers and implantable cardioverter defibrillators (ICDs). Examples of undesired triggering or inhibition of pacemaker output by extraneous signals were identified early after the introduction of noncompetitive, “demand” pacemakers. Hermetic shielding in metal cases, filtering, and interference rejection circuits...

This study indicated that multi-walled carbon nanotubes (MWCNTs)-epoxy composites can be used as effective lightweight shielding materials. The measurement results showed that highest EMI SE of 23.4 dB at 8 GHz was obtained for nanocomposite with 1 wt% MWCNTs. Dielectric properties and electrical conductivity values were supplemented by microscopic studies.

Electromagnetic (EM) shielding has become an essential element in the modern world alongside increased use of electronic products and telecommunication equipment. We are surrounded by electromagnetic fields that have inevitably formidable our lives. It is possible to absorb EM waves adding materials. Researches focused addition different additives into cement based mixture increase shielding. T...

Simulations based on electromagnetic topology (EMT) have been carried out to analyze an external electromagnetic pulse interaction with a shielded coaxial cable linking two systems together. The proposed EMT approach, combined with the SPICE model of the shielded cable, can be applied in the transient simulation directly and used for the electromagnetic interference analysis of systems includin...

Current forms of radiation shielding fail to adequately protect either equipment or personnel during extended space travel beyond the Van Allen radiation belts. Radiation such as galactic cosmic radiation, neutrons, and high energy electromagnetic radiation is of great concern and must be taken into account in the planning of any future mission. In light of this, it is necessary to produce new ...

Herein, a comparative study of the electromagnetic interference (EMI) shielding performance multi-layered architectures fabricated using different strategies ( i.e. , polyurethane (PU)-based film, foam, and 3D printed structures) has been evaluated.

A planar lipid bilayer (BLM) workstation, used to record currents through actively gating, ion conducting single channels, is a complex apparatus requiring several components working in concert. These components include a means to support the lipid membrane, high gain amplification, shielding of electromagnetic interference and mechanical vibration, mechanisms for stirring and changing solution...