Abstract: Various systems and methods are provided for a biased cathode assembly of an X-ray tube with improved thermal management and a method of manufacturing same. In one example, a cathode assembly of an X-ray tube comprises an emitter assembly including an emitter coupled to an emitter support structure, and an electrode assembly including an electrode stack and a plurality of bias electrodes. The emitter assembly including a plurality of independent components that are coupled together. The electrode assembly including a plurality of independent components that are coupled together, and the emitter assembly being coupled to the electrode assembly.

Abstract: Pyrrolidine main protease inhibitors are described that are effective as antiviral compounds.

Abstract: A system, methods, and apparatus are described to collect and prepare single cells, nuclei, subcellular components, and biomolecules from specimens including tissues and in some embodiments use the single cells to form organoids or microtissues. The system can perform enzymatic and/or physical disruption of the tissue to dissociate it into single-cells and then use a hanging droplet method to form organoids or microtissues.

Abstract: An electric circuit protection system includes a control module and a circuit sensor communicatively coupled with the control module. The control module is communicatively coupled with a switch that is joined with a circuit having a power source and a fuse. The control module is configured to monitor a degradation factor related to an energy threshold value of the fuse and direct the switch to open the circuit to prevent the power source from supplying current through the fuse. The circuit sensor is configured to measure an energy parameter of the current supplied by the power source through the circuit or that is demanded by a load from the power source. The control module is configured to direct the switch to open the circuit based on the energy threshold value and the energy parameter.

Abstract: A composition includes a cathodic material comprising a support structure. The support structure includes copper and zinc, and has less than 1 weight percent of aluminum, tin, or aluminum and tin. An energy storage device includes a cathodic material having a support structure.

Abstract: An electric circuit protection system includes a control module and a circuit sensor communicatively coupled with the control module. The control module is communicatively coupled with a switch that is joined with a circuit having a power source and a fuse. The control module is configured to monitor a degradation factor related to an energy threshold value of the fuse and direct the switch to open the circuit to prevent the power source from supplying current through the fuse. The circuit sensor is configured to measure an energy parameter of the current supplied by the power source through the circuit or that is demanded by a load from the power source. The control module is configured to direct the switch to open the circuit based on the energy threshold value and the energy parameter.

Abstract: A composition includes a cathodic material comprising a support structure. The support structure includes copper and zinc, and has less than 1 weight percent of aluminum, tin, or aluminum and tin. An energy storage device includes a cathodic material having a support structure.

Abstract: A method is provided that includes forming brass from zinc powder and copper powder in the presence of a sodium electrolyte. In one aspect, an electrochemical cell is loaded with copper and zinc, the electrochemical cell is heated, and at least one charge/discharge cycle of the electrochemical cell is performed. Alpha brass is converted to gamma brass in presence of zinc and sodium. Methods of producing and operating an energy storage device are also provided.

Abstract: An energy storage device includes a cathodic material having a support structure. The energy storage device has an initial state and a subsequent state. The support structure includes only alpha brass in the initial state, and includes both alpha brass and gamma brass in the subsequent state. An energy storage device includes a cathodic material having an initial state and a subsequent state. In the initial state, the cathodic material includes discrete particles, and in the subsequent state the support structure includes open-cell brass foam. An energy storage system including the energy storage device is also provided.

Abstract: A helical drive system for seating and unseating a removable component, such as a printed circuit board, into a slot is described. The helical drive system includes a receptacle fixed to a housing proximate the slot. A handle and drive shaft are attached to the printed circuit board. The drive shaft has a helical groove that mates with a pin included in the receptacle. Rotation of the drive shaft pulls the printed circuit board into the slot and fully seats the printed circuit board. Rotation in the other direction unseats the printed circuit board. The helical groove has an enlarged entry that terminates in one or more points. This configuration facilitates the automatic alignment of the pin with the helical groove.

Abstract: A cable manager is attached to a device, connected to a number of cables. The cables are engaged by the cable manager in order to appropriately guide and organize the cables. The cable manager is sized and positioned so that when in a normal operating position, certain components remain freely accessible. When so desired, a technician or other user can easily raise and secure the cable manager without disconnecting the cables, thereby moving the coupled cables out of the way of various components of the device. Thus, components obstructed by the cable manager when in the normal operating position can be accessed and serviced, or otherwise utilized.