Nearly all C-band communication satellites use the band of frequencies from 3.7 to 4.2 GHz for their downlinks, and the band of frequencies from 5.925 to 6.425 GHz for their uplinks. Note that by using the band from 3.7 to 4.0 GHz, this C-band overlaps somewhat into the IEEE S-band for radars.
A ventral hernia occurs when a weak spot in the abdomen enables abdominal tissue or an organ (such as an intestine) to protrude through a cavity muscle area. These hernias are visibly identified by a bulge in the belly area. The most common sites for ventral hernias are the site of a previous abdominal procedure (an incisional hernia), the navel (an umbilical hernia), and the groin (an inguinal hernia). About 90,000 ventral hernia repairs are performed in the United States each year.
Incisional hernias may occur along the full length of the incision with one or multiple hernial orifices. Incarceration is the main complication of an incisional hernia [10] and occurs in 1-3% of a ll hernias. Signs of incarceration are acute pain and vomiting. Clinically there is a tense, tender irreducible hernia.ncisional hernias may occur along the full length of the incision with one or multiple hernial orifices. Incarceration is the main complication of an incisional hernia [10] and occurs in 1-3% of a ll hernias. Signs of incarceration are acute pain and vomiting. Clinically there is a tense, tender irreducible hernia.