BEIJING UNIVERSITY OF TECHNOLOGY

The present invention relates to a method for electrocatalytically and synergistically treating industrial sulfur-containing flue gas and converting PET waste plastics into hydroxymethanesulfonate. The method includes: passing industrial sulfur-containing flue gas into an alkaline solution to obtain treatment solution, where the sulfur-containing flue gas contains sulfur-containing oxides; hydrolyzing waste PET plastics in an alkaline solution to obtain PET hydrolysate containing ethylene glycol; mixing the treatment solution and the PET hydrolysate to prepare an electrolyte, and through an electrolytic reaction, converting ethylene glycol in the PET hydrolysate and sulfur-containing oxides into hydroxymethanesulfonate. The present invention synergistically integrates the treatment of industrial sulfur-containing flue gas with the recycling of waste PET plastics, converting them into the high-value chemical, hydroxymethanesulfonate. This strategy not only enhances the recycling value of waste PET but also utilizes the by-products from the flue gas desulfurization process, enhances overall process efficiency and economic viability.

A joint expression coding system based on static and dynamic expression images is disclosed, including an image preprocessing module, a dynamic expression image generation module, a dynamic weight image generation module, and a joint expression coding image generation module. A joint expression coding method based on the joint expression coding system is also disclosed. A static expression image and a dynamic expression image are combined into one image according to the coding method by adopting the joint expression coding system and method based on the static and dynamic expression images, whereby static expression information and dynamic expression information can be represented at the same time, thus improving the emotion recognition capability based on facial expressions.

An installation method for roadway low-position lighting fixtures uses parameter measurement from a dynamic visual recognition experiment. Multiple fixture sets having respective preset color temperature and color rendering index pairs, or a configurable fixture set providing multiple such pairs, are tested at predetermined luminance levels and operating speeds on a dynamic experimental road with a randomly placed target. A test vehicle includes a speed detection device, and a tested driver wears an eye-tracker. Based on eye movement indicating target recognition, an operator marks a vehicle position at recognition and a vehicle position at passing the target to obtain a recognition distance. Samples of luminance and recognition distance are collected across luminance levels, speeds, lighting environments, and drivers. A recognition-distance-luminance model is fitted to derive a luminance threshold meeting a safe sight distance requirement, and fixtures are selected and installed along both sides of the road accordingly.

The present disclosure relates to a technical field of waste circuit board processing. A pyrolysis device for a waste circuit board is provided, including a pyrolysis furnace for performing pyrolysis treatment on the waste circuit board; a carbon black collection tank for collecting carbon black formed after the pyrolysis treatment; a processing unit for crushing the carbon black and separating magnetic metal from the carbon black; and a helical conveyor. A feeding end of the helical conveyor is located in the carbon black collection tank, and a discharging end is connected to the processing unit. The processing unit includes a crushing assembly including a housing, two sorting tubes rotatably connected to the housing, a first guide plate disposed on the housing, two adjustment sections respectively provided in the two sorting tubes and connected to the housing, and a plurality of permanent magnets connected to each adjustment section.

Provided is a method for extracting and recovering high-purity lithium carbonate and iron phosphate from a spent lithium battery material. The method includes the following steps. In a first extraction stage, the iron phosphate feature data is input into an iron phosphate quality analysis model to obtain a first quality index at time T 1 +a. Whether the extraction device is in an abnormal extraction state at time T 1 +a is determined. If the abnormal extraction state occurs, an extraction adjustment instruction is generated, and the extraction device is adjusted. If not, a second extraction instruction is generated, and whether the extraction device is in an abnormal state at time T 2 +b in a second extraction stage is determined. If the extraction device is in the abnormal extraction state, a second extraction adjustment instruction is generated, and the extraction device is adjusted. If not, extraction continues until extraction of lithium carbonate is completed.

The invention discloses a memory access management method for a heterogeneous multi-core system oriented to a deep neural network, belonging to the storage system structure field of a computer system. The invention utilizes CPU-GPU heterogeneous multi-core system to accelerate DNN model training, and designs a memory access controller according to its memory access characteristics. In the DNN training process, the final cache shared by multiple cores is unloaded, preretrieved and released, and the fine-grained data transmission process significantly improves the utilization rate of the final cache. In addition, the memory access controller also designed a delay hiding mechanism, by overlapping the access process of a large number of intermediate data in the feature extraction layer and the calculation process, reducing the calculation performance loss caused by the miss of the final level cache and the need to wait for the memory access response of DRAM during the model calculation process, and optimizing the training efficiency.

The present application provides a pneumatic-liquid auto-balance actuator with a large diameter. An intermediate sleeve is interference-sheathed on an outer side wall of a liquid storage tray. An outer side wall of the intermediate sleeve is axially provided with four gas circulation grooves. The bottom of a stator is axially provided with four gas injection channels, which are of unequal depths and are in one-to-one correspondence to the gas circulation grooves. The liquid storage tray comprises four liquid storage cavities uniformly distributed in a circumferential direction. Gas injection pipes are arranged in the liquid storage cavities and are in communication with and connected to the gas circulation grooves. A communication pipe is in communication and connected between the liquid storage cavities which are provided opposite each other.

The invention disclosed a method for recycling rare earth elements from waste light-emitting electronic components by pyrolysis and alkaline melting-acid leaching. Based on the pyrolysis properties of the organic polymer, through catalytic pyrolysis of the organic polymer material in electronic components and convert the carbon in the residue into water gas, realize high-efficient dismantling of waste electronic component packaging materials. The traditional problems that the compositions of waste light-emitting electronic components are difficult to disassemble are solved, the generated pyrolysis gas and water gas can continuously supply energy for the pyrolysis system and recover the heat in the flue gas to save energy. Meanwhile, based on the chemical dissolution reaction mechanism of phosphors, the combination process of alkali melting, and acid leaching is used to efficiently recover rare earth elements from the waste light-emitting electronic components, and the step leaching of rare earth elements is realized. The rare earth oxalate can be recovered by precipitation, which greatly reduces the difficulty of late separation and purification.

A method for retrieving in-situ building information based on visual gaze is disclosed, including: extracting and optimizing a building information model; obtaining gaze data; aligning the BIM model with a physical structure of the building through a spatial anchors technology; and wearing MR device for on-site building information retrieval. Based on MR technology, the present invention provides a visual gaze retrieval method for building information with real building components as the carrier. The MR technology is used to link and bind the digital information of building components with the physical entities of building components; the eye tracking technology is used to perform the visual information retrieval of building components. Users can rapidly obtain relevant building information, such as material properties and design parameters, by gazing at real building components, which improves the efficiency of on-site work and brings significant improvement and convenience to the construction industry.

1.55 μm all-fiber laser based on tapering of ultra-large mode area fiber is provided, which can increase the fiber mode area, significantly enhance energy, and achieve high energy, high beam quality, narrow linewidth pulsed light, and all-fiber. The overall structure achieves an integration of the fiber laser system by fiber fusion. In the fiber laser seed source system continuous seed light output from a distributed feedback laser with an integrated isolator is modulated into pulsed light with controllable repetition rate and pulse width by an acousto-optic modulator. After amplification by a single-mode erbium-doped fiber amplifier, the signal light is amplified to an order of ten milliwatts and injected into a fiber pre-amplifier. In the fiber pre-amplifier, signal light is amplified to the order of hundreds of milliwatts by two stages of erbium-ytterbium co-doped gain fiber.