Abstract: A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.

Abstract: A method comprises: first, obtaining a to-be-recognized lane line image; then determining, based on the lane line image, a candidate pixel used to recognize a lane line region, to obtain a candidate point set, where the lane line region is a region of a location of a lane line in the lane line image and a surrounding region of the location of the lane line; then selecting a target pixel from the candidate point set, and obtaining at least three location points associated with the target pixel in a neighborhood, where the at least three location points are on one lane line; and finally, performing extension by using the target pixel as a start point and based on the at least three location points associated with the target pixel, to obtain a lane line point set corresponding to the target pixel.

Abstract: A preparation method for additive manufacturing titanium alloys involves coupling control is performed for the microstructure and the microvoids in the material to achieve the synchronous optimization of both. Firstly, the microvoids in the printed material are eliminated by printing and hot isostatic pressing technologies. Then, based on the critical temperature and time of grain growth and phase transformation, the microstructure is optimized by high-temperature and short-time heat treatment.

Abstract: A preparation method for additive manufacturing titanium alloys involves coupling control is performed for the microstructure and the microvoids in the material to achieve the synchronous optimization of both. Firstly, the microvoids in the printed material are eliminated by printing and hot isostatic pressing technologies. Then, based on the critical temperature and time of grain growth and phase transformation, the microstructure is optimized by high-temperature and short-time heat treatment.

Abstract: A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.

Abstract: A method comprises: first, obtaining a to-be-recognized lane line image; then determining, based on the lane line image, a candidate pixel used to recognize a lane line region, to obtain a candidate point set, where the lane line region is a region of a location of a lane line in the lane line image and a surrounding region of the location of the lane line; then selecting a target pixel from the candidate point set, and obtaining at least three location points associated with the target pixel in a neighborhood, where the at least three location points are on one lane line; and finally, performing extension by using the target pixel as a start point and based on the at least three location points associated with the target pixel, to obtain a lane line point set corresponding to the target pixel.

Abstract: This application relates to the field of artificial intelligence, and specifically, to the field of computer vision, and discloses a perception network based on a plurality of headers. The perception network includes a backbone and the plurality of parallel headers. The plurality of parallel headers are connected to the backbone. The backbone is configured to receive an input image, perform convolution processing on the input image, and output feature maps, corresponding to the image, that have different resolutions. Each of the plurality of parallel headers is configured to detect a task object in a task based on the feature maps output by the backbone, and output a 2D box of a region in which the task object is located and confidence corresponding to each 2D box. Each parallel header detects a different task object.

Abstract: The present invention discloses a high-purity separation method of iron ions from an aqueous solution containing heavy metal ions, wherein after pretreatment of an aqueous solution containing heavy metal ions, sedimentation containing iron ions are collected, nitric acid or sulfuric acid is added for dissolution, and then a reducing agent is added to the dissolved solution; and after heating and sealing reaction, red sedimentation is generated at the bottom, The sedimentation has a high purity, and the residual amount of iron in the solution is less than 0.4 mg/L. In the method, iron ions in the solution can be converted to hematite crystals at a high purity, and the solution has an excellent retention rate of heavy metal ions, the reaction time is short, the separation efficiency is high, the operation is simple, and the cost is low.

Abstract: The present invention discloses a method for preparing Erdite rod-shaped particles for water treatment by utilizing iron-containing waste mud in an underground water plant. In the method, aqueous iron mud is subjected to mechanical dehydration to obtain a first aqueous iron mud; sodium sulfide is added to the first aqueous iron mud to obtain a first mixture, wherein the ratio of the weight of the first aqueous iron mud to the volume of sodium sulfide is between 3% and 15%; water of an equal volume is added to the first mixture, and the obtained solution is heated in an airtight manner to 140° C.-270° C.; centrifugal treatment is performed to obtain a supernatant and a solid, and the solid is subjected to vacuum drying at 40° C.-60° C. for 24 h to obtain Erdite rod-shaped particles.

Abstract: The present invention discloses a high-purity separation method of iron ions from an aqueous solution containing heavy metal ions, wherein after pretreatment of an aqueous solution containing heavy metal ions, sedimentation containing iron ions are collected, nitric acid or sulfuric acid is added for dissolution, and then a reducing agent is added to the dissolved solution; and after heating and sealing reaction, red sedimentation is generated at the bottom, The sedimentation has a high purity, and the residual amount of iron in the solution is less than 0.4 mg/L. In the method, iron ions in the solution can be converted to hematite crystals at a high purity, and the solution has an excellent retention rate of heavy metal ions, the reaction time is short, the separation efficiency is high, the operation is simple, and the cost is low.

Abstract: The present invention discloses a method for preparing Erdite rod-shaped particles for water treatment by utilizing iron-containing waste mud in an underground water plant. In the method, aqueous iron mud is subjected to mechanical dehydration to obtain a first aqueous iron mud; sodium sulfide is added to the first aqueous iron mud to obtain a first mixture, wherein the ratio of the weight of the first aqueous iron mud to the volume of sodium sulfide is between 3% and 15%; water of an equal volume is added to the first mixture, and the obtained solution is heated in an airtight manner to 140° C.-270° C.; centrifugal treatment is performed to obtain a supernatant and a solid, and the solid is subjected to vacuum drying at 40° C.-60° C. for 24h to obtain Erdite rod-shaped particles.

Abstract: The present invention discloses a method of removing iron ions from a solution containing neodymium, praseodymium, dysprosium and iron, in which glucose is added into an acid solution containing neodymium, praseodymium, dysprosium and iron, at a molar ratio of iron/glucose at 0.2-2, and mixed evenly, and the solution is then hydrothermal treated, and after that an iron-containing precipitate is formed at the bottom, and the residual concentration of iron in the supernatant is less than 20 mg/L, and the retention rate of the rare earth elements is more than 97%.

Abstract: A method and an apparatus for displaying a video from any location and any time, where the method includes obtaining a control signal input by a user, where the control signal reflects an operation intention of the user; determining a manner of displaying video content according to the control signal input by the user; determining a video playback control instruction according to characteristic information of the video content and the manner of displaying the video content, where the video playback control instruction includes a playback start location and a playback manner; and playing the video content under control of the video playback control instruction. Because the control instruction is determined according to the manner of displaying the to-be-played video, the video can be played from any location and any time.