Abstract: The present disclosure is related to systems and methods for indoor positioning. The method includes obtaining a first location of a subject at a first time point. The method also includes determining one or more motion parameters associated with the subject at least based on one or more sensors carried by the subject. The method further includes determining, based on the first location of the subject and the one or more motion parameters associated with the subject, a second location of the subject at a second time point after the first time point. The method still further includes adjusting, at least based on surroundings information associated with the subject at the second time point, the second location of the subject to determine a target location of the subject.

Abstract: A nanoflower immunochromatographic strip for detecting heavy metal mercury ions is provided. The nanoflower immunochromatographic strip includes the following components: a plastic outer shell, a sample pad, an immunoprobe joint pad, a nitrocellulose membrane and an absorbent pad; the immunoprobe joint pad is dropwise added with a gold nano-immunoprobe labeled with an anti-mercury-ion monoclonal antibody; the anti-mercury-ion monoclonal antibody is a monoclonal antibody secreted by an anti-Hg2+-ITCBE hapten murine hybridoma cell strain 7A1; and a preservation number of the murine hybridoma cell strain 7A1 is CGMCC No. 23879. The nanoflower immunochromatographic strip detects a heavy metal hapten Hg2+-ITCBE, with a detection threshold of 50 ng/mL and a detection limit of 0.39 ng/mL, has strong specificity, high sensitivity, good repeatability and rapid detection, and is of great significance for monitoring residue of heavy metal mercury.

Abstract: The present disclosure is related to systems and methods for indoor positioning. The method includes obtaining a first location of a subject at a first time point. The method also includes determining one or more motion parameters associated with the subject at least based on one or more sensors carried by the subject. The method further includes determining, based on the first location of the subject and the one or more motion parameters associated with the subject, a second location of the subject at a second time point after the first time point. The method still further includes adjusting, at least based on surroundings information associated with the subject at the second time point, the second location of the subject to determine a target location of the subject.