Abstract: Exemplary embodiments provide computer-implemented methods, mediums, and apparatuses configured to perform targeted isotope clustering. A mass spectrum for a sample may be obtained from an analytical laboratory instrument, and a set of peaks within the mass spectrum may be identified. A list of fragments expected to be potentially present in the sample may be obtained, and a set of predicted peaks may be generated from the list. The spectrum may be searched for the predicted peaks to determine if any combination of the peaks present in the spectrum match the expected fragment patterns. Accordingly, isotope (charge) clusters may be built in a targeted way using a priori knowledge to target the matches. As a result, spectrum analysis can be done more quickly and efficiently than in conventional systems that use neutral or untargeted matching, and the matches can be made more accurately.

Abstract: A method and apparatus are described for feeding a hose having a corrugated exterior surface into a mining borehole and the like. The apparatus includes a support frame and a rotatable drive wheel having an annular groove for receiving the hose and ridges extending therefrom for meshing with the corrugated surface of the hose. An idler wheel having an annular groove for receiving the hose is disposed on the support frame to bias the hose against the drive wheel. A reversible, variable speed motor coupled to the drive wheel is provided for causing the drive wheel to rotate in a selectable direction and at a selectable speed. The apparatus is mountable on an implement used in a mining operation. The hose is couplable to a source of liquid explosive and to an inflatable wand for charging boreholes with explosive.