Abstract: A tricone drill bit having a hollow housing and leg sections holding rotatable cones for drilling rock. The drill bit encloses a cavitation reactor. The cavitation reactor includes liquid and being capable of receiving a laser beam. The cavitation reactor forms cavitation bubbles fin the liquid in response to the laser beam. The cavitation reactor includes a mask having sub millimeter sized apertures for directing cavitation jets formed on the collapse of the cavitation approximately 0.1-10 microns. These reentrant cavitation jets pass easily through the apertures of the mask and to the rock to enable the tricone drill be to operate more efficiently.

Abstract: Foods that are fermented with synergistic and simultaneous use of bacilli and mycelial cultures. The foods include a cellulosic food substrate containing detectable amounts of 1,3/1,6 ?-glucan which has been fermented by a bacilli strain of bacteria in cooperation with mycelium of a strain of Agaricomycetes fungi including polyporales. The bacilli strain maintains the food substrate at a pH of less than 4.7 to inhibit growth of pathogenic microbes and the consequent need to sterilize the food substrate in a sterile environment prior to fermentation by the mycelial culture.