Abstract: A conduit laser alignment assembly includes a plurality of tubes that each has a unique diameter with respect to each other. A respective one of the tubes is positionable on an exposed end of an existing conduit in a building that has a diameter corresponding to the diameter of the respective tube. A laser emitter is removably coupled to the respective tube when the respective tube is positioned on the exposed end of the conduit. In this way the laser emitter can emit a beam of light that extends along a longitudinal axis of the existing conduit thereby facilitating the route of a new conduit to be displayed. An adapter disk is provided for coupling the laser emitter to a tube that has a greater diameter than the laser emitter.

Abstract: Disclosed is a method for the anaerobic microbial dechlorination of polychlorinated biphenyls (PCBs). Polyhalogenated ethenes are used to stimulate the growth and dechlorinating activity of PCB dechlorinating bacteria in a contaminated soil or sediment. This method may be further coupled with aerobic microbial degradation of PCBs for the complete destruction of PCBs in soils and sediments. Polyhalogenated ethenes are also used in growth media for the culturing of PCB dechlorinating bacteria.

Abstract: A centrifugal turbomachine includes an impeller and a speed sensor arranged to detect a speed associated with an impeller speed. A temperature sensor is arranged to detect a temperature associated with an impeller exit temperature. A controls system has impeller parameters, which includes the impeller speed and exit temperature. A calculation methodology is used to mathematically manipulate the impeller parameters to determine a remaining life of the impeller. A program response, such as a warning indication, is triggered by the control system in response to the remaining life reaching a threshold. The controls system monitors the speed and temperature of the impeller. The controls system internally calculates the remaining life based upon the speed and the temperature. In one example, a change in remaining life is calculated in response to a change in speed that results in an impeller stress that exceeds an endurance strength for the impeller.

Abstract: The present invention relates to an assay for identification of PCB dechlorinating organisms that are capable of biologically removing PCBs from contaminated materials. Specifically, the invention provides a set of primers for detecting PCB dechlorinating organisms in a sample. These individual primers of the primer set have a sequence of at least 12 nucleotides that is unique to 16S rDNA of PCB dechlorinating organisms.

Abstract: Disclosed is a method for the anaerobic microbial dechlorination of polychlorinated biphenyls (PCBs). Polyhalogenated ethenes are used to stimulate the growth and dechlorinating activity of PCB dechlorinating bacteria in a contaminated soil or sediment. This method may be further coupled with aerobic microbial degradation of PCBs for the complete destruction of PCBs in soils and sediments. Polyhalogenated ethenes are also used in growth media for the culturing of PCB dechlorinating bacteria.

Abstract: A support sleeve press-fitted onto an end ring of a rotor applies a compressive pre-load stress on the end ring to counteract centrifugal stresses generated during rotor operation. In one embodiment, the support sleeve is made of a high-strength material having a thermal growth coefficient that is substantially the same as the thermal growth coefficient of the end ring material to minimize centrifugal and thermal stress in the end ring.