Abstract: Disclosed are an image processing method and apparatus, an electronic device, and a storage medium. The image processing method determines mapping coordinates of a pixel point in a pixel block with one pixel block as a unit, and in this process, only a first pixel in the pixel block transformed through homography transformation based on a homography transformation formula to obtain projection coordinates thereof, and mapping coordinates of other pixel points (that is, second pixels) in the pixel block may be determined through a positional relationship between one of the plurality of second pixels and the first pixel in the pixel block. In this way, times of the homography transformation may be reduced, which is beneficial to reducing quantity of computation required by an entire image processing method and improving computation efficiency of the image processing method.

Abstract: The invention discloses an exopolysaccharide from Rhodopseudomonas palustris and a method for preparing and use thereof, and the method for preparing comprises the steps of: 1) keeping a seed solution from Rhodopseudomonas palustris GJ-22 in a fermentation medium for fermentation culture to obtain a fermentation broth; 2) centrifuging the fermentation broth to take the supernatant, which is treated by alcohol precipitation after filtration, and then collecting the pellet from alcohol precipitation by centrifugation to obtain crude polysaccharide; 3) removing proteins from the rude polysaccharide using protease enzymolysis method and Sevag method, followed by dialysis treatment with distilled water to remove small molecules and organic solvent to obtain a polysaccharide sample; 4) purifying the polysaccharide sample through an anion exchange column and a molecular exclusion chromatography column obtain the exopolysaccharide from Rhodopseudomonas palustris.

Abstract: The disclosure provides an integrated separation unit for microplastics in the coastal sediments and a collection method of microplastics, belonging to the technical field of water treatment. The unit includes: a holder, a separation cylinder, a collection bottle, a central baffle plate, a baffle plate control knob, a stirring propeller, a motor, a cylinder switch, a filtration screen, a welding nozzle, a filter membrane and a vacuum pump. Using this unit for microplastic collection has the advantages of easy operation, economical and environment-friendly, high separation efficiency, and high durability.

Abstract: The invention discloses an exopolysaccharide from Rhodopseudomonas palustris and a method for preparing and use thereof, and the method for preparing comprises the steps of: 1) keeping a seed solution from Rhodopseudomonas palustris GJ-22 in a fermentation medium for fermentation culture to obtain a fermentation broth; 2) centrifuging the fermentation broth to take the supernatant, which is treated by alcohol precipitation after filtration, and then collecting the pellet from alcohol precipitation by centrifugation to obtain crude polysaccharide; 3) removing proteins from the rude polysaccharide using protease enzymolysis method and Sevag method, followed by dialysis treatment with distilled water to remove small molecules and organic solvent to obtain a polysaccharide sample; 4) purifying the polysaccharide sample through an anion exchange column and a molecular exclusion chromatography column obtain the exopolysaccharide from Rhodopseudomonas palustris.

Abstract: A multifunctional plug, including a main body and a pin piece. The main body is provided with a holding slot for holding the pin piece. The pin piece includes a pin and a rotating shaft. The pin can rotate out of the holding slot with the rotating shaft as the rotating center, and the pin can extend into the slot of other plug and is conductive connection with the plug piece assembly of the other plug. The main body is provided with a first clamping portion, and further includes the first conductive spring piece fixed in the main body. A power adapter, including a multifunctional plug, other plug and a housing. The multifunctional plug is fixed on the housing, and the other plug is detachable and clamped on the multifunctional plug.

Abstract: The disclosure provides an integrated separation unit for microplastics in the coastal sediments and a collection method of microplastics, belonging to the technical field of water treatment. The unit includes: a holder, a separation cylinder, a collection bottle, a central baffle plate, a baffle plate control knob, a stirring propeller, a motor, a cylinder switch, a filtration screen, a welding nozzle, a filter membrane and a vacuum pump. Using this unit for microplastic collection has the advantages of easy operation, economical and environment-friendly, high separation efficiency, and high durability.

Abstract: A multifunctional plug, including a main body and a pin piece. The main body is provided with a holding slot for holding the pin piece. The pin piece includes a pin and a rotating shaft. The pin can rotate out of the holding slot with the rotating shaft as the rotating center, and the pin can extend into the slot of other plug and is conductive connection with the plug piece assembly of the other plug. The main body is provided with a first clamping portion, and further includes the first conductive spring piece fixed in the main body. The present disclosure discloses a power adapter, including a multifunctional plug, other plug and a housing. The multifunctional plug is fixed on the housing, and the other plug is detachable and clamped on the multifunctional plug. The multifunctional plug and power adapter provided by the present disclosure have good universality.

Abstract: A multi-functional charger includes an upper housing, a lower housing, a receiving cavity, a PCB, a two-phase mother plug, and a child plug. The receiving cavity is defined between the upper housing and the lower housing. An opening is defined in a side of the upper housing and the lower housing. The PCB is located in the receiving cavity. The multi-functional charger can use conducting member to couple to the PCB, the circuit may be more stability and more safety. It is easy to be assembled, and a various type of child plugs can be coupled to the mother plug. It is also easy to use with good user experience.

Abstract: A multi-functional charger includes an upper housing, a lower housing, a receiving cavity, a PCB, a two-phase mother plug, and a child plug. The receiving cavity is defined between the upper housing and the lower housing. An opening is defined in a side of the upper housing and the lower housing. The PCB is located in the receiving cavity. The multi-functional charger can use conducting member to couple to the PCB, the circuit may be more stability and more safety. It is easy to be assembled, and a various type of child plugs can be coupled to the mother plug. It is also easy to use with good user experience.