Abstract: An electronic device includes a gamma data source, a signal receiving circuit, a buffer circuit, a counter, a multiplexer, and a gamma processing unit. The signal receiving circuit receives source data, and correspondingly generates a grayscale value. The buffer circuit electrically couples the signal receiving circuit and stores the grayscale value. The counter receives a system clock signal to generate a sequence number. The multiplexer electrically couples the counter and the gamma data source. The multiplexer receives the sequence number. The multiplexer outputs a bit message corresponding to the sequence number in the gamma data source. The gamma processing unit electrically couples the multiplexer and the buffer circuit. The gamma processing unit receives the bit message from the multiplexer. The gamma processing unit receives the grayscale value from the buffer circuit. The gamma processing unit outputs a bit value corresponding to the grayscale value in the bit message.

Abstract: A nanodrug particle includes alginate and a camptothecin compound. The camptothecin compound is grafted onto the alginate, and the alginate and the camptothecin compound self-assemble and form a nanosphere. The disclosure also provides a method for preparing a nanodrug particle; the method includes: modifying alginate to form alginate having amine groups; modifying a camptothecin compound to form a camptothecin compound having a carboxyl group; forming a camptothecin-alginate polymer by reacting the alginate having amine groups with the camptothecin compound having a carboxyl group, wherein the camptothecin-alginate polymer self-assembles in an aqueous solution and forms a nanosphere.

Abstract: The present invention provides a virus collection matrix, including: a porous gel or fibrous structure formed by a positively charged polymer material; and a plurality of ACE 2 receptors. The plurality of ACE 2 receptors are negatively charged, and distributed and covered on the surface of the porous gel or fibrous structure. The whole virus collection matrix is positively charged.

Abstract: A method for retrieving object information is applied to a portable electronic device and includes the following steps. A global position system (GPS) module receives a position signal to get GPS data. A magnetic sensing module senses magnetic field to get azimuth direction data. A touch input module inputs an event which is a movement moving from a touch position towards an object to get input direction data. A processing module gets angle difference data according to the azimuth direction information and the input direction information. The information of the corresponding object from a database according to the parameters of the GPS data is retrieved, and the parameters of the GPS data, the azimuth direction data and the angle difference data are used by the processing module.

Abstract: A direction control apparatus is provided. The direction control apparatus includes an input unit, and a magnetic sensing unit. The input unit includes an operation member, a magnetic member, an elastic member, and a base. The elastic member is an elastic structure. The magnetic sensing unit includes a magnetic sensor, and a magnetic signal processing device. The magnetic sensor is a device for sensing a distribution of a magnetic field, and the magnetic signal processing device is an electronic calculating device. The elastic member is provided for restricting the operation member at either a first status position or a second status position. When at the first status position, the operation member is positioned at balanced position where the elastic member achieves an elastic balance.