Abstract: Electrochemistry is used to generate active nitrating species from nitrate salt in situ in an aprotic solvent to eliminate acidic and/or toxic waste streams associated with the production of energetic materials. The systems/methods perform alcohol nitration without using nitric acid and/or sulfuric acid. As a result, the systems/methods may be operated under milder conditions (e.g., room temperature and ambient pressure). In addition, the disclosed systems/methods offer high product selectivity via controlling electrolysis potential. The electrochemical synthetic method is scalable, highly amenable to continuous processing and can make use of inexpensive feedstocks, making the systems/methods well-suited to large-scale manufacture.

Abstract: A support for an imaging device includes a first rotatable assembly supportable by a support that rotates in a generally horizontal plane and a horizontal locking member. The imaging device includes a second rotatable assembly that rotates in a generally vertical plane.

Abstract: Installation of a removable tripod foot is facilitated by a cross-axis aperture in the foot and loosening of the threaded connection of the foot and the tripod's leg is resisted by a resilient element engaging interfacing surfaces of the foot and the leg.

Abstract: A method for revision control within hearing-aid fitting software may include storing session fitting data for a plurality of fitting sessions of a hearing assistance device; displaying a graphical user interface, the graphical user interface including a list of the plurality of fitting sessions of the hearing assistance device, the graphical user interface allowing for selection of two or more fitting sessions for display; receiving a selection of a fitting session from the list; and in response to receiving the selection, updating the graphical user interface to include a response curve related to the selected fitting session.

Abstract: Installation of a removable tripod foot is facilitated by a cross-axis aperture in the foot and loosening of the threaded connection of the foot and the tripod's leg is resisted by a resilient element engaging interfacing surfaces of the foot and the leg.

Abstract: A method for revision control within hearing-aid fitting software may nclude storing session fitting data for a plurality of fitting sessions of a hearing assistance device; displaying a graphical user interface, the graphical user interface including a list of the plurality of fitting sessions of the hearing assistance device, the graphical user interface allowing for selection of two or more fitting sessions for display; receiving a selection of a fitting session from the list; and in response to receiving the selection, updating the graphical user interface to include a response curve related to the selected fitting session.

Abstract: A child stroller can be arranged into nested, stacked, and/or layered configurations to increase storage density. For example, the nose of a first such stroller can fit within a cavity formed in the rear of a second such stroller. In another embodiment, strollers can include a first interlock arrangement and a second interlock arrangement having complementary geometries, thereby facilitating vertical stacking of the strollers. A bottom surface of the strollers also can include a third interlock arrangement configured to mate with the second interlock arrangement to facilitate layering of the strollers. Embodiments of the stroller also can include an activity bar.