Abstract: The present invention provides a method for determining hydrogen sulfide (H2S) by headspace single-drop liquid phase microextraction and intelligent device colorimetry, which comprises: taking a silver-gold core-shell triangular nanosheet (Ag@Au TNS) as a nanodetection probe, in combination with an analysis method of headspace single-drop microextraction (HS-SDME), specifically extracting H2S volatilized from a sample to be detected by the nanodetection probe, and detecting H2S in the extracted sample with the help of the photographing function of an intelligent device and a color picking software. Compared with the prior art, the present invention adopts intelligent device colorimetry, with the limit of detection of about 65 nM and the linear range of 0.1-100 ?M, and the established method can be applied to the determination of H2S in actual samples such as egg white, milk and other opaque samples, and has the advantages of few procedures, simple operation, high detection efficiency and the like.

Abstract: Disclosed are an information interaction method and apparatus, and an electronic device. One specific embodiment of the method comprises: in response to a user logging in to a live interface initiated based on a multimedia conference, displaying a live data stream of the multimedia conference in the live interface initiated based on the multimedia conference, wherein the live data stream is generated on the basis of an interactive data stream of a participating user of the multimedia conference; receiving interactive content input by the user on the basis of the live data stream, and generating interactive information according to the interactive content; and sending the interactive information to a serving end, so as to instruct the serving end to send the interactive information to a terminal device that displays the live interface. The communication efficiency of information related to the content of a multimedia conference is thus improved.

Abstract: The toy has a liquid degradable membrane extending over the opening of a hollow containment device. The membrane maintains a compressible component, such as a layer foam, in the device in its compressed state. A structure such as a doll supports the compressed component in the containment device, which may take the form of a plant pot. In a preferred embodiment, the compressed foam will expand through the plane of the membrane when contacted by the liquid after it passes through the membrane. An applicator may be provided to facilitate the application of the liquid to the membrane.

Abstract: The toy system has a liquid degradable component used to obscure a hidden component that is release or revealed upon application of a liquid on the liquid degradable component. The toy may resemble the blooming of a plant to reveal a doll or figuring for further enjoyment after it is revealed to the user.