Abstract: An interaction method, an interaction apparatus, and an electronic device are provided. The method includes: determining, in response to detecting a predefined size transformation operation, target transformation information of a target video based on whether a current size of the target video is a preset anchor point size, where the target video is a video played in a video play area; and transforming the target video based on the target transformation information, and playing the transformed target video.

Abstract: Pseudomonas sp. strain KW-2.

Abstract: A method of preparing a FeMnCeOx biomaterial is provided, including the following steps. A Pseudomonas sp. strain KW-2 is obtained. A culture medium with a pH of 6.5-7.8 is prepared, which includes 0.1 g/L K2HPO4, 0.2 g/L MnSO4·7H2O, 0.2 g/L NaNO3, 0.1 g/L CaCl2), 0.1 g/L NH4Cl, 0.1 g/L (NH4)2CO3, 35 g/L NaCl and 150 mg/L ferric ammonium citrate. The culture medium is autoclaved, inoculated with the KW-2 strain, cultured for 1-3 days, added with a cerium nitrate solution, cultured for 3-7 days and centrifuged at 4,000-8,000 rpm for 10-20 min to collect a precipitate. The precipitate is rinsed 5-8 times with deionized water and 0.01 mol/L phosphate buffered saline (PBS) and freeze-dried at ?60° C. to obtain the FeMnCeOx biomaterial. A method for treating antibiotic wastewater using the FeMnCeOx biomaterial is also provided.

Abstract: An interaction method, an interaction apparatus, and an electronic device are provided. The method includes: determining, in response to detecting a predefined size transformation operation, target transformation information of a target video based on whether a current size of the target video is a preset anchor point size, where the target video is a video played in a video play area; and transforming the target video based on the target transformation information, and playing the transformed target video.

Abstract: Disclosed in embodiments of the present disclosure are a video mirroring method and apparatus, and an electronic device and a storage medium. A currently played first video is mirrored to a second device according to a mirroring enable instruction of a user, and after the first video is mirrored to the second device, the playback progress of the first video is monitored; when it is determined according to the playback progress of the first video that the mirroring of the first video is completed, a mirroring device can automatically mirror a second video to the second device, such that after the mirroring of the previous video is finished, a next video can be continuously mirrored, and the user does not need to perform a mirroring operation after the mirroring of the previous video is finished.

Abstract: This invention relates to a method of in-situ remediation of arsenic-contaminated soil, comprising the following steps: inoculating a bacterial strain, Pseudomonas putida MnB1 in a culture medium where an addition amount of the bacterial strain accounts for 2-10% (v/v) of the culture medium; shaking the culture medium with the bacterial strain at a rotation speed of 100-180 rpm at 15-35° C. for 1-5 days under an aerobic condition, thereby yielding an enriched bacterial strain; and adding manganese carbonate, ammonium ferrous sulfate, sodium citrate, a yeast extract and the enriched bacterial strain to arsenic contaminated soil; adding water to the soil until the soil has a moisture content of 50-70%, stirring the soil for 5-30 minutes, and culturing the bacterial strain in the soil under an aerobic/microaerobic condition at 10-40° C. for 2-6 weeks.

Abstract: An interaction method, an interaction apparatus, and an electronic device are provided. The method includes: determining, in response to detecting a predefined size transformation operation, target transformation information of a target video based on whether a current size of the target video is a preset anchor point size, where the target video is a video played in a video play area; and transforming the target video based on the target transformation information, and playing the transformed target video.

Abstract: A protective cover apparatus for an otoscope to serve as a barrier between the otoscope and an ear canal of a user is provided. The otoscope includes a camera body coupled to a camera head having an attachment groove. The protective cover apparatus includes an adapter with a tubular member that attaches to the camera head of the otoscope, a sleeve coupled to the adapter and having a central tubular member and an outer flared surface protruding from the top end of the central tubular member, and a cap coupled to the top end of the tubular member of the adapter and having a central opening that permits unobstructed access to the camera head of the otoscope.