VANADIUM RECOVERY METHOD
    343.
    发明申请

    公开(公告)号:US20180297856A1

    公开(公告)日:2018-10-18

    申请号:US15916668

    申请日:2018-03-09

    Abstract: A vanadium recovery approach utilizes oil fly ash (OFA), in contrast to coal fly ash, for separation and recovery of vanadium. OFA is first carbon burned to reduce the volume for recycling, and also to provide a fuel for other industrial processes. Following an almost 90% weight reduction from carbon burning, the remaining material includes about 18% vanadium. A salt roasting performed at the same temperature (about 650° C.) as the carbon burning allows use of the same oven or furnace, reducing heat requirements for the overall process. Salt roasting generates a water-soluble material from which a water leaching process yields a vanadium leach solution containing recovered vanadium, avoiding a need for caustic or volatile leaching agents. Ammonium metavanadate is precipitated from the vanadium leach solution through addition of ammonium sulfate, and a calcination process used to generate vanadium oxide (V2O5).

    GYROSCOPICALLY CONTROLLED BALANCE PROSTHETIC
    344.
    发明申请

    公开(公告)号:US20180289510A1

    公开(公告)日:2018-10-11

    申请号:US15948270

    申请日:2018-04-09

    Abstract: A shoulder prosthesis restores the complex dynamics of the arm for whole-arm amputees. While most prosthesis for arm amputees focus on restoring the user's capabilities for dexterous manipulation, the disclosed prosthesis remains affixed to the shoulder and exerts a moment on the user's trunk similar to that of the arm during walking for dynamic motion assistance. The prosthesis includes a rotating, gimbaled mass oriented based on gait and stride for emulating forces that would have been provided by the amputee arm. The size, ease of use, and relatively low cost manufacture of the proposed device makes it an attractive complement or alternative to standard prosthesis, particularly for amputees who pursue rigorous or prolonged physical activity.

    FIXATION IDENTIFICATION USING DENSITY OPTIMIZATION

    公开(公告)号:US20180032816A1

    公开(公告)日:2018-02-01

    申请号:US15662965

    申请日:2017-07-28

    Abstract: A fixation identification system includes an eye-tracking device and a fixation identification device disposed in electrical communication with the eye-tracking device. The fixation identification device includes a controller having a memory and a processor, the controller being configured to identify each gaze position data element received from the eye-tracking device as one of fixation gaze position data and saccade gaze position data, each gaze position data element corresponding to a visual location associated with a field of view at a corresponding time; identify at least one fixation region associated with the fixation gaze position data; adjust a number of fixation gaze position data elements associated with the at least one fixation region; and generate a density optimized fixation region based upon the adjusted number of fixation gaze position data elements.

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