The 50-50 grind is the first grind trick that most skaters learn, and is a great basic skateboard trick to learn. The 50-50 grind is where the skater grinds the ledge or rail with both trucks. The nice thing about the 50-50 is that you can learn to do it on a curb, which is a pretty safe and easy place to practice.
dBi is decibels relative to isotropic radiator which means that the radiator (an antenna, usually) sends the signal equally strong in all directions, including above and below. Such a radiator would have 0 dBi.(I have yet to see an antenna like that -- it may exist only in math theory.).Bi is decibels relative to isotropic radiator which means that the radiator (an antenna, usually) sends the signal equally strong in all directions, including above and below. Such a radiator would have 0 dBi. (I have yet to see an antenna like that -- it may exist only in math theory.).
INTRODUCTION. Multichannel intraluminal impedance (MII) is a new technique designed to detect intraluminal bolus movement without the use of radiation.It is generally performed in combination with manometry or pH testing.ombined with manometry (multichannel intraluminal impedance and manometry; MII-EM) it provides information about both pressures and bolus transit within the esophagus. Combined with pH (multichannel intraluminal impedance and pH; MII-pH) it permits detection of both acid and non-acid gastroesophageal reflux.