Abstract: A method for preparing a cyclodextrin metal organic framework (CD-MOF) stable in aqueous phase, including: dissolving ?-cyclodextrin and solid potassium hydroxide in deionized water followed by magnetic stirring and ultrasonic treatment at room temperature, addition of methanol and stirring to obtain a reaction mixture; filtering the reaction mixture with a polytetrafluoroethylene membrane filter in a beaker; placing the beaker in methanol vapor to form a ?-CD-MOF crystal; washing the ?-CD-MOF crystal with ethanol followed by centrifugation and vacuum drying to obtain ?-CD-MOF; preparing a ?-CD-MOF-active substance complex by impregnation; and preparing an active substance-loaded ?-CD-MOF-Tween 80 complex by physical adsorption modification followed by washing with anhydrous ethanol and vacuum drying.

Abstract: A method for preparing a cyclodextrin metal organic framework (CD-MOF) stable in aqueous phase, including: dissolving ?-cyclodextrin and solid potassium hydroxide in deionized water followed by magnetic stirring and ultrasonic treatment at room temperature, addition of methanol and stirring to obtain a reaction mixture; filtering the reaction mixture with a polytetrafluoroethylene membrane filter in a beaker; placing the beaker in methanol vapor to form a ?-CD-MOF crystal; washing the ?-CD-MOF crystal with ethanol followed by centrifugation and vacuum drying to obtain ?-CD-MOF; preparing a ?-CD-MOF-active substance complex by impregnation; and preparing an active substance-loaded ?-CD-MOF-Tween 80 complex by physical adsorption modification followed by washing with anhydrous ethanol and vacuum drying.

Abstract: A method for detecting the state of the proximity sensor, applied to a terminal including the proximity sensor and an antenna, includes: sending a predetermined instruction to the proximity sensor; determining whether the proximity sensor is abnormal based on a feedback result of the proximity sensor to the predetermined instruction; and maintaining the antenna transmitting power at a low power if the proximity sensor is abnormal. Through the feedback of the proximity sensor to the request to obtain the capacitance value, it is determined whether the proximity sensor can work normally, and in a case that the proximity sensor cannot work normally, the antenna transmitting power is reduced to avoid the continuous high antenna transmitting power due to the inability of the proximity sensor to work normally, which reduces the radiation to the human body.

Abstract: A method for detecting the state of the proximity sensor, applied to a terminal including the proximity sensor and an antenna, includes: sending a predetermined instruction to the proximity sensor; determining whether the proximity sensor is abnormal based on a feedback result of the proximity sensor to the predetermined instruction; and maintaining the antenna transmitting power at a low power if the proximity sensor is abnormal. Through the feedback of the proximity sensor to the request to obtain the capacitance value, it is determined whether the proximity sensor can work normally, and in a case that the proximity sensor cannot work normally, the antenna transmitting power is reduced to avoid the continuous high antenna transmitting power due to the inability of the proximity sensor to work normally, which reduces the radiation to the human body.

Abstract: An electronic device includes: a plurality of metal sensing members with sensing regions facing different directions; a test sensor, including a plurality of signal channels, wherein the plurality of signal channels are connected to the metal sensing members through signal wires, and the test sensor is configured to acquire a first capacitance variation when a distance between a sensing region and a user changes; and a processor connected to the test sensor, the processor being configured to adjust a radiation power of a radio frequency circuit in the electronic device according to the first capacitance variation.

Abstract: The present disclosure relates to a terminal housing and a terminal. The terminal housing includes a rear cover, a radio frequency module and an antenna array. The radio frequency module is coupled to the antenna array. The rear cover includes a first area and a second area where the second area is different from the first area, and the first area is coupled to the second area through insulating material. The first area includes a plurality of antenna array elements, each of the plurality of antenna array elements is made of conductive material, and any two adjacent antenna array elements are coupled using insulating material, and the plurality of antenna array elements form the antenna array.

Abstract: An electronic device includes: a plurality of metal sensing members with sensing regions facing different directions; a test sensor, including a plurality of signal channels, wherein the plurality of signal channels are connected to the metal sensing members through signal wires, and the test sensor is configured to acquire a first capacitance variation when a distance between a sensing region and a user changes; and a processor connected to the test sensor, the processor being configured to adjust a radiation power of a radio frequency circuit in the electronic device according to the first capacitance variation.

Abstract: A human body distance detection module for an electronic device, includes: a first metal sheet; a capacitance sensor electrically connected to the first metal sheet and configured to obtain a capacitance to ground of the first metal sheet, the capacitance to ground configured to reflect a distance between a human body and the electronic device; and a second metal sheet, at least one part of the second metal sheet being disposed opposite to the first metal sheet, the second metal sheet and the first metal sheet being insulated from each other to enable mutual coupling, and at least one part of the second metal sheet being not parallel to the first metal sheet.

Abstract: A human body distance detection module for an electronic device, includes: a first metal sheet; a capacitance sensor electrically connected to the first metal sheet and configured to obtain a capacitance to ground of the first metal sheet, the capacitance to ground configured to reflect a distance between a human body and the electronic device; and a second metal sheet, at least one part of the second metal sheet being disposed opposite to the first metal sheet, the second metal sheet and the first metal sheet being insulated from each other to enable mutual coupling, and at least one part of the second metal sheet being not parallel to the first metal sheet.

Abstract: The present disclosure relates to a terminal housing and a terminal. The terminal housing includes a rear cover, a radio frequency module and an antenna array. The radio frequency module is coupled to the antenna array. The rear cover includes a first area and a second area where the second area is different from the first area, and the first area is coupled to the second area through insulating material. The first area includes a plurality of antenna array elements, each of the plurality of antenna array elements is made of conductive material, and any two adjacent antenna array elements are coupled using insulating material, and the plurality of antenna array elements form the antenna array.