Other

Vanderbilt University

Robert Adam Horch

Mark Does

Daniel Frank Gochberg

Jeffrey S Nyman

A fire control group is capable of operating in multiple, user-selectable modes. The fire control group includes two disconnectors, a selector switch, and a trigger with a tang. The selector switch has a series of cams which interact with the tang of the trigger and surfaces of the two disconnectors to provide different hammer break points (i.e., distances from neutral), reset distances, overtravel distances, and pull weights, depending on a rotational position of the selector switch. In one embodiment, the fire control group is capable of a safe mode, a 2-stage trigger pull, and a 1-stage trigger pull.

Fire control group with multiple user-selectable trigger profiles

Fire control with multiple user-selectable trigger profiles

Systems and methods for characterizing bone structures are provided for characterizing bone structures. In the system and method, one or moreH NMR or MRI signals associated with a bone structure are obtained. Thereafter one or more signal parameters are computed from the obtained signals, where each of the signal parameters comprising at least one of a relaxation rate constant or a corresponding signal amplitude associated with a component of the obtained signals defined by a Tvalue or a range of Tvalues. Finally, the mechanical properties or fracture risk for the bone structure are determined based on the computed signal parameters and stored correlation data.

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Nashville, TN, United States of America

Robert Adam Horch