Abstract: A smart wearable device has a signal calibration function executed by a signal calibration method and applied to a finger, a limb and/or a neck of a user. The smart wearable device includes at least one physiological signal detector, at least one pressure detector and an operation processor. The at least one physiological signal detector is adapted to abut against a detection area of the user for detecting a physiological signal. The at least one pressure detector is disposed around the at least one physiological signal detector and adapted to detect a pressure value of the detection area. The operation processor is electrically connected with the at least one physiological signal detector and the at least one pressure detector. The operation processor is adapted to optimize the physiological signal when the pressure value exceeds a predefined pressure threshold.

Abstract: The present disclosure discloses a method for recycling all types of lithium batteries. First, the lithium battery waste is acid-leached to obtain a solution containing most of metal ions. After filtering, the solution is separated from the remaining solids, and then the obtained solution is subjected to separate precipitation many times. After separately adjusting the pH value of the solution many times, adding precipitants with a high selectivity ratio, and matching with filtration and separation reaction, all ions in the lithium battery waste are sequentially precipitated in forms of iron phosphate (FePO4), aluminum hydroxide (Al(OH)3), manganese oxide (MnO2), dicobalt trioxide (cobalt oxide, Co2O3), nickel hydroxide (Ni(OH)2), and lithium carbonate (Li2CO3).

Abstract: A light device for an artificial fishing lure includes a housing having an elongated transparent tubular portion, a reflector plate disposed on one end of the transparent tubular portion, and a chamber disposed adjacent to the other end of the transparent tubular portion. The housing is to be attached to the artificial fishing lure. An electrical light emitting device is provided inside the housing adjacent to the other end of the transparent tubular portion. A power source is disposed inside the chamber and supplies electric power to the electrical light emitting device so as to operate the same. The tubular portion has an inner surface provided with a plurality of axially extending triangular notches. Refraction of light rays passing through the transparent tubular portion is increased by the triangular notches.