Replace Battery on Polar F2 heart rate monitor by yourself.
Polar FIS+ Advanced 2015 Edition is the evolution of the previous Polar FIS+. It adds new parameters in addition to new features.
De cilinderkop wissel is voltooid. De eerste rit in Duitsland na het verwisselen van de cilinderkop was succesvol.
Plasma Science and Technology, Vol.16, No.9, Sep. 2014
Investigation of Total Absorption of Radio Waves in High Latitude Ionosphere
SHI Jiankui ( )1 , WANG Zheng ( )1 , TAO Wei ( )1 , G. A. ZHEREBTSOV , E. B. ROMANOVA , K. G. RATOVSKY2
State Key Laboratory of Space Weather, NSSC/CAS, Beijing 100190, China Institute of Solar-Terrestrial Physics, SB/RAS, Irkutsk 664033, Russia
Using the digisonde data observed at ionospheric station Norilsk (Dip lat. 60o N) in 2006, a statistical study on the characteristics of the ionospheric plasma total absorption of radio waves (IPTAR) was performed. In the winter and some months of equinox, the IPTAR mainly occurred in the nighttime and the highest occurrence rate could be up to 90%. In the summer, the occurrence was relatively low and the differences between nighttime and daytime occurrence reduced. The total duration of IPTAR seemed longer around the winter than that around the summer. The occurrence of IPTAR events ascended as the Kp index increased. The ...