Abstract: A computer system is structured to determine a density of particulate matter in a diesel particulate filter (DPF) sample. The computer system includes a processing circuit having a processor and a memory. The processing circuit is structured to generate a computed tomography (CT) scan-based image of the DPF sample; and, segment the CT scan-based image of the DPF sample into a plurality of regions. For at least one region from the plurality of regions, the processing circuit is structured to determine a density of a portion of the DPF sample corresponding to the at least one region of the CT scan-based image of the DPF sample and cause an electronic display of a user device to display the CT scan-based image including the at least one region and an indication of the density for the at least one region.

Abstract: An upper body workout apparatus assembly comprises two upper body workout apparatuses for each side of a user's body. Each apparatus may have a support bar supported by a plurality of lateral supports. A sliding handle is configured to rotate about each support bar as well as sliding along the length of the support bar. The user may grasp each sliding handle with one of the user's hands to perform push-up, dip, pull-up, abdominal or other exercises, whereby each sliding handle is moved between a distal and proximal position relative to its support bar. One or more anchor mounts secure each apparatus to a wall or ceiling during pull-up type exercise. The apparatuses are positioned adjacent one another as part of the assembly.