Abstract: A microfluidic lab-on-a-chip (LOC) device, microfluidic systems, and associated methodology are described that allow for intelligently collecting environmental DNA (eDNA) and their associated metadata. Optical spectroscopy is integrated with filtration membranes on the microfluidic device. The microfluidic LOC device and systems can be used for selectively capturing targeted species based on optical characteristics and for recording relevant metadata on eDNA acquired by the filtration membranes.

Abstract: A pipe repair assembly for sealing leaks in pipelines that transmit oil, chemicals, steam and the like, is disclosed. The assembly is in the form of a two-part sleeve which forms an enclosure or box over a section of leaking pipe. The sleeve includes a pre-fitted sealing jacket to provide a snug fit over the pipe contour. Optionally, the assembly may have a channel or groove transverse to the longitudinal axis of the sleeve and spaced inwardly of the ends of the sleeves for receiving a floating metal ring and a ring of sealant material. The floating ring, sealant ring and sealing jacket are all compressed when bolts connecting the two parts of the sleeve are secured.