In electrodynamic suspension (EDS), both the guideway and the train exert a magnetic field, and the train is levitated by the repulsive and attractive force between these magnetic fields.  In some configurations, the train can be levitated only by repulsive force. In the early stages of maglev development at the Miyazaki test track, a purely repulsive system was used instead of the later repulsive and attractive EDS system.  The magnetic field is produced either by superconducting magnets (as in JR–Maglev) or by an array of permanent magnets (as in Inductrack ). The repulsive and attractive force in the track is created by an induced magnetic field in wires or other conducting strips in the track. A major advantage of EDS maglev systems is that they are dynamically stable – changes in distance between the track and the magnets creates strong forces to return the system to its original position.  In addition, the attractive force varies in the opposite manner, providing the same adjustment effects. No active feedback control is needed.
Tren- great medication, which gives excellent results on the path of "solo" to increase muscle mass without the need to be combined with other medications. However, it is a very powerful steroid, and therefore do not exceed the recommended dosage of certain: for acetate - is 50mg per day for enthatate: 300-350mg per week. To test the tolerance of Tren is better to start with a minimum dosage. If the entire rate is not more than six weeks, the need for additional formulations appears; when 6 to 8 weeks, with the need to enter the second week Gonadotropin (500 / 1000ME every 7 days) and stop taking it two weeks after administration cycle. Next, we have to be post-cycle therapy: start 14 days after the last injection or after 3days (if used Tren Acetate). To restore testosterone production take testosterone boosters (4 weeks after the course).
Injectable steroids are injected into muscle tissue, not into the veins. They are slowly released from the muscles into the rest of the body, and may be detectable for months after last use. Injectable steroids can be oil-based or water-based. Injectable anabolic steroids which are oil-based have longer half-life than water-based steroids. Both steroid types have much longer half-lives than oral anabolic steroids. And this is proving to be a drawback for injectables as they have high probability of being detected in drug screening since their clearance times tend to be longer than orals. Athletes resolve this problem by using injectable testosterone early in the cycle then switch to orals when approaching the end of the cycle and drug testing is imminent.