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Showing results for: high voltage

Measuring and assessing the effects of extremely low-frequency electromagnetic fields (ELF-EMF) on blood parameters and liver enzymes of personnel working in high voltage power stations in a petrochemical industry.

Research RF Safe Research Library Jan 1, 2023

This cross-sectional study in a petrochemical industry compared 50 high-voltage power-station workers exposed to ELF-EMF with 50 controls. Electric and magnetic fields were measured at 200 points, and blood parameters and liver enzymes were extracted from medical records. The study reports no significant differences…

Hazardous effects of high voltage electromagnetic field on albino rats and protective role of Rosmarinus officinalis.

Research RF Safe Research Library Jan 1, 2022

This animal study examined effects of a 50 Hz high-voltage electromagnetic field (5.4 kV/m) applied 2 or 4 hours per day for 25 days in albino rats. The authors report decreases in RBC, haemoglobin, and catalase activity, with increases in WBCs, liver enzymes, bilirubin, kidney-related markers, and malondialdehyde…

Measurement and Modeling of Personal Exposure to the Electric and Magnetic Fields in the Vicinity of High Voltage Power Lines.

Research RF Safe Research Library Jan 1, 2016

This study reports experimental measurements and numerical modeling of electric and magnetic fields near a high voltage substation in Annaba, Algeria. Field intensities were measured at multiple heights intended to correspond to sensitive human body regions and were validated using finite element simulations. The…

Risk assessment of desert pollution on composite high voltage insulators.

Research RF Safe Research Library Jan 1, 2014

This engineering study assesses the risk of failure of composite high-voltage insulators in desert environments where sand accumulation and moisture can create conductive layers and leakage currents. Using realistic Sinai sand grain size and salinity data and an ABB composite insulator as a case study, the authors…

Nanocomposite dielectrics in PbO-BaO-Na2O-Nb2O5-SiO2 system with high breakdown strength for high voltage capacitor applications.

Research RF Safe Research Library Jan 1, 2012

This engineering materials study reports fabrication and characterization of nanocomposite dielectrics in a PbO-BaO-Na2O-Nb2O5-SiO2 glass-ceramic system. X-ray diffraction and microstructural observations describe temperature-dependent phase formation with nanometer-sized crystallites dispersed in a glass matrix. The…

Effect of extremely low frequency electromagnetic field exposure on sleep quality in high voltage substations.

Research RF Safe Research Library Jan 1, 2012

This case-control study measured electric field intensity and magnetic flux density in high voltage substations and estimated workers' ELF-EMF exposure over a shift. Sleep quality was assessed using the PSQI in 67 exposed workers and 110 controls. The study reports no statistically significant difference in overall…

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