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Showing results for: measurements

[Microstrip antenna design and system research of radio frequency identification temperature sensor].

Research RF Safe Research Library Jan 1, 2008

This engineering paper introduces an RFID sensor network concept integrating RFID with wireless sensor networks and emphasizes the role of antennas. It discusses coil, dipole, and microstrip antennas and reports designing a microstrip antenna for a wireless temperature monitoring and control system. Measurements are…

Single access point localisation for wearable wireless sensors.

Research RF Safe Research Library Jan 1, 2008

This engineering conference paper describes a single access point method for localizing a subject using RF signals from wearable wireless sensors. The approach combines RSSI and LQI measurements from one basestation and applies filtering. The abstract reports that accuracy can approach that of multi-basestation…

In-line application of electric field in capillary separation systems: Joule heating, pH and conductivity.

Research RF Safe Research Library Jan 1, 2008

This engineering study investigated factors affecting current when an electric field is applied in-line in a capillary separation system. Temperature measurements and a replicated cooling setup were used to estimate Joule heating effects, which were reported to be relatively small. In contrast, significant pH shifts…

Microscopic observation of living cells during their exposure to modulated electromagnetic fields.

Research RF Safe Research Library Jan 1, 2008

This paper describes an exposure and microscopy system designed to continuously observe living cells during exposure to modulated RF-EMF similar to mobile phone signals. Using protocols where the same cells serve as controls before and after exposure, the system was validated with endocytosis measurements. Under 900…

[The impact of treatment by extremely low frequency magnetic fields on the electropotentials in an oral cavity and some chemical elements content in saliva].

Research RF Safe Research Library Jan 1, 2007

This study reports measurements in 25 dental patients treated with the Viofor JPS system using extremely low frequency magnetic fields. Following a series of treatments, oral cavity electropotentials decreased and saliva pH increased. Copper levels in non-stimulated saliva decreased, while other measured elements…

Magnetic field exposure in a nondestructive testing operation.

Research RF Safe Research Library Jan 1, 2007

This exposure assessment measured peak magnetic fields during magnetic particle inspection, a nondestructive testing method that uses electromagnetism. Ninety-five peak measurements taken while inspecting 8 turbine engine shafts ranged from

[Measurements of professional exposure to ELF fields in some production areas within the territory of Regione Campania and comparison with the action values according to 2004/40/CE Directive].

Research RF Safe Research Library Jan 1, 2007

This occupational exposure assessment measured ELF magnetic fields in 400 workers across 80 work areas in several production sectors in Regione Campania. Measurements were taken continuously over two shifts and processed into RMS magnetic-field values. The authors report no exceedance of the EU 2004/40/CE action…

[Assessment of radiofrequency electromagnetic fields levels in the Taranto area].

Research RF Safe Research Library Jan 1, 2007

This study reports punctual monitoring of RF electromagnetic fields from radiobase stations in the Taranto area, with measurement campaigns conducted from November 2005 to March 2007. Measurements covered 108 transmitting stations across multiple communication technologies within 100 kHz to 3 GHz. Most monitored…

[ELF-MF occupational exposure: repeated measures on workers].

Research RF Safe Research Library Jan 1, 2007

This occupational exposure assessment used personal dosimeters to estimate ELF magnetic field exposure in 543 workers across 9 occupational settings in Emilia-Romagna. Median time-weighted average exposure was 0.14 microT, with tile production showing the highest setting-level TWA. Repeat measurements after 6–9…

Biophoton emission of MDCK cell with hydrogen peroxide and 60 Hz AC magnetic field.

Research RF Safe Research Library Jan 1, 2007

This in vitro study measured biophoton/chemiluminescence emission from MDCK cells after inducing reactive oxygen species with hydrogen peroxide. The authors report that photon emission increased with hydrogen peroxide dose and that photomultiplier tube measurements agreed with fluorescence microscopy observations.…

[A measurement of spontaneous magnetic field by satellites structures of harmonic spectrum].

Research RF Safe Research Library Jan 1, 2007

This study measured satellite structures of second- and third-harmonic spectra reflected from solid targets during femtosecond laser–plasma interactions using an optical multi-channel spectrometer. Red-shifted satellite structures of 2ω0 and 3ω0 were observed, and at ~10^18 W/cm^2 the inferred spontaneous magnetic…

[Reports on electromagnetic field strength measurements issued for occupational health and safety needs in the opinion of radio communication station users].

Research RF Safe Research Library Jan 1, 2007

This paper describes a modified approach for assessing occupational EMF exposure during work on radio and television towers and masts, where exposure can be high and tasks/routes are not fixed. The method calculates maximum admissible dwell time at different mast levels while incorporating the EMF dose accumulated…

20 kHz Magnetic Field Emission of Induction Cooking Heaters

Research RF Safe Research Library Jan 1, 2004

This exposure assessment measured 20 kHz magnetic field leakage from induction cooking heaters across four models and compared results with ICNIRP general public limits. The maximum reported magnetic flux density was 16 µT at a specified measurement point using two S-type pans. Field leakage depended on pan size and…

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