Abstract: Disclosed herein is a method for remediating sewage that contains persistent contaminants. The method comprises ozofractionating the sewage under conditions whereby a foam fractionate comprising persistent contaminants is produced and separated from an ozofractionated wastewater, quiescing the ozofractionated wastewater, whereby a residual ozone content of the ozofractionated wastewater is reduced, and contacting the quiesced ozofractionated wastewater with a microorganism population under conditions effective to biologically remediate the ozofractionated wastewater.

Abstract: A collapsible support frame has a front frame, a rear frame, and a locking mechanism connected to the front and rear frames. The locking mechanism has a lever and a base member. In the locked position, the lever and the base member engage to pull the front and rear frames towards each other. This places tension on the front and rear frames and holds the frame structure in an open or unfolded position for use. In the unlocked position, the lever and the base member separate from each other. This releases the tension placed on the front and rear frames and allows the frame structure to collapse or fold in on itself for storage.

Abstract: A collapsible support frame has a front frame, a rear frame, and a locking mechanism connected to the front and rear frames. The locking mechanism has a lever and a base member. In the locked position, the lever and the base member engage to pull the front and rear frames towards each other. This places tension on the front and rear frames and holds the frame structure in an open or unfolded position for use. In the unlocked position, the lever and the base member separate from each other. This releases the tension placed on the front and rear frames and allows the frame structure to collapse or fold in on itself for storage.

Abstract: In a magnetic or optical disk drive the integrity of data written on a disk is verified by writing data to a portion of the disk, and immediately reading the data from the disk after it has been written. If there is error in reading the data and/or the data read from the disk is substantially different from the data written to the disk an error condition is generated. The error condition may be reporting the error to the host which decides whether to rewrite the data or immediately rewriting the data without further instructions from the host.