Isomaltooligosaccharides produced by Leuconostoc mesenteroides ATCC 13146 fermentation with a sucrose:maltose ratio of 2:1 have been discovered to be effective prebiotics in mixed cultures of microbial populations, including cultures from chicken ceca. Preferably, the casing of the rotational shock-absorber is also used for the anchorage of a respective end of a leaf spring, which constitutes the elastic element of the suspension. The second sheet includes a first downturned wall engaging a surface of the first outer wall as well as a second downturned wall engaging a surface of the second outer wall. Thick and wide interconnect lines are created in the thick second layer of dielectric. The first embodiment relates to an amputated finger with a portion of the finger remaining. In other words, when an IP data packet, destined for the protected networks, is received by the IC-breaker located on the outside of the firewall, the IC-breakers are adapted to communicate with each other to create the temporary opening in the firewall via which the IP data packet is sent to the protected network.