Mobile blood alcohol content and impairment sensing device

    公开(公告)号:US10539549B2

    公开(公告)日:2020-01-21

    申请号:US15783414

    申请日:2017-10-13

    Abstract: In a mobile sensing device, a method of detecting blood alcohol content includes receiving time-series gait data from at least one sensor of the mobile sensing device as a user walks and detecting a set of attributes associated with the time-series gait data, each attribute of the set of attributes related to the user's gait. The method includes comparing the set of attributes with a machine learning classification model learned from a training data set of attributes to determine at least one of a blood alcohol content range of the user and an impairment level of the user and outputting a notification associated with the at least one of the blood alcohol content range of the user and the impairment level of the user.

    VANADIUM RECOVERY METHOD
    117.
    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
    118.
    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.

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