Abstract: This application discloses an electronic device. The electronic device includes a first radiator, a metal battery compartment, and a connecting member. The first radiator includes a first end and a second end, and a feed point of the first radiator is located between the first end and the second end. The metal battery compartment includes a first sidewall and a backplane, the first sidewall is disposed on a periphery of the backplane, and the backplane is grounded. The first radiator is located outside the metal battery compartment, and there is a first gap between the first radiator and the first sidewall. The connecting member is located in the first gap, and is connected to a first position of the first sidewall and a second position of the first radiator. The second position is located between the first end of the first radiator and the feed point.

Abstract: Embodiments of the present disclosure provide a video call method and apparatus, an electronic device, and a storage medium. The method includes: playing, in response to a first operation on a target interaction page, a standard video and a user video through the target interaction page, where the first operation is an operation of triggering a video interaction, the user video is an interactive video associated with the standard video, and the target interaction page is a page for displaying interaction content; and generating an effect animation according to an action matching degree between the user video and the standard video, and displaying the effect animation through the target interaction page.

Abstract: The present invention provides a magnetic biochar-quaternary phosphonium salt bactericidal material, a preparation method therefor and usage thereof, and belongs to the field of water treatment. The preparation method comprises: 1) using corn straw biochar as a precursor to prepare magnetic biochar by a co-precipitation method; and 2) adding the magnetic biochar into deionized water, then adding a quaternary phosphonium salt, performing the magnetic stir at room temperature, raising the temperature after sufficient impregnation, carrying out a hydrothermal reaction, and then cooling to the room temperature to obtain the bactericidal material. The temperature is raised to 60° C.˜70° C.

Abstract: The present invention provides a magnetic biochar-quaternary phosphonium salt bactericidal material, a preparation method therefor and usage thereof, and belongs to the field of water treatment. The preparation method comprises: 1) using corn straw biochar as a precursor to prepare magnetic biochar by a co-precipitation method; and 2) adding the magnetic biochar into deionized water, then adding a quaternary phosphonium salt, performing the magnetic stir at room temperature, raising the temperature after sufficient impregnation, carrying out a hydrothermal reaction, and then cooling to the room temperature to obtain the bactericidal material. The temperature is raised to 60° C.˜70° C.

Abstract: An electronic device and a housing for the electronic device are provided. The housing includes a metal part. The metal part includes at least one spiral slot formed on the metal part A portion of the metal part which is disposed between an innermost loop and an outermost loop of the spiral slot forms a spiral metal coil by being spaced by the spiral slot. The spiral metal coil is configured as an antenna radiation element electrically connected with an antenna circuit inside the electronic device, and the spiral slot is filled with an insulating material.

Abstract: A positioning method includes: emitting an interrogator signal from an electronic device; detecting, by the electronic device, a response signal that is generated and emitted by a sensor among a plurality of sensors, in response to the interrogator signal; and acquire location information about the sensor by identifying the sensor based on the detected response signal. The response signal is generated based on transduction of the interrogator signal.

Abstract: An electronic device and a housing for the electronic device are provided. The housing includes a metal part. The metal part includes at least one spiral slot formed on the metal part A portion of the metal part which is disposed between an innermost loop and an outermost loop of the spiral slot forms a spiral metal coil by being spaced by the spiral slot. The spiral metal coil is configured as an antenna radiation element electrically connected with an antenna circuit inside the electronic device, and the spiral slot is filled with an insulating material.

Abstract: A positioning method includes: emitting an interrogator signal from an electronic device; detecting, by the electronic device, a response signal that is generated and emitted by a sensor among a plurality of sensors, in response to the interrogator signal; and acquire location information about the sensor by identifying the sensor based on the detected response signal. The response signal is generated based on transduction of the interrogator signal.