We investigated the effect of stimulation with a pulsed electromagnetic field on the osseointegration of hydroxyapatite in cortical bone in rabbits. Implants were inserted into femoral cortical bone and were stimulated for six hours per day for three weeks. Electromagnetic stimulation improved osseointegration of hydroxyapatite compared with animals which did not receive this treatment in terms...

— Temperature, current density and magnetic field distributions in YBCO bulk superconductor during a pulsed-field magnetization (PFM) process are calculated using the finite difference method. Simulations are based on the heat diffusion equation with account of the heat produced by flux motion, and Maxwell's equations. A power law with temperature and magnetic field dependent parameters is used...

Although the therapeutic use of pulsed magnetic fields has long been in existence, understanding of its mode of action has been poorly understood. As early as 1940, Nagelshmidt proposed that its action was at the cellular level and this has now been supported by research. It has been shown that damaged cells have a reduced negative charge, with subsequent effect on the flow of ions. This causes...

in Gaussian units, where is the electric charge density, A is the magnetic vector potential (where ∇ ·A = 0 for static fields in both the Coulomb and Lorenz gauges), E is the electric field, B is the magnetic field, V is the electric scalar potential, and J is the electric current density. The first form is due to Faraday and Maxwell, the second form is due to Poynting Thomson and Poincaré, the...

Each stage of an accelerator system has a limited dynamic range and therefore a chain of stages is required to reach high energy. A combination of septa and kicker magnets is frequently used to inject and extract beam from each stage. The kicker magnets typically produce rectangular field pulses with fast riseand/or fall-times, however, the field strength is relatively low. To compensate for th...

Mobile phone use by children and adolescents has increased considerably during the last 15 years. This has resulted in public concerns about possible adverse effects of radiofrequency electromagnetic fields generated by these devices. So far, the risk of brain tumors due to mobile phone use has not been addressed in this age group. CEFALO is an international case-control study examining the ass...

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Effects of electromagnetic fields (EMFs) on human cell lines were described in numerous studies, but still many questions remain unanswered. Our experiment was designed with the aim of studying the effects of EMFs on the metabolic activity of chondrocytes in vitro. Human chondrocyte in vitro cultures, cultured in medium supplemented with 20 % fetal calf serum, were exposed to static magnetic fi...