Abstract: The present disclosure relates to a groundwater circulation well group and a circulation mode control method therefor. The groundwater circulation well group includes at least two multi-filter-layer groundwater circulation wells, multiple pumping/injection assemblies, and a control module. The at least two multi-filter-layer groundwater circulation wells are arranged in order along a groundwater flow direction. A wellbore of each multi-filter-layer groundwater circulation well is separated by at least two first packers to form three pumping/injection sections, and each pumping/injection section is internally provided with at least one pumping/injection assembly for water pumping/injection. The water pumping and/or water injection of the pumping/injection assembly is controlled by the control module. A pipe wall of each pumping/injection section is provided with a perforated water pumping/injection screen section.

Abstract: An acetabular reconstruction prosthesis with a piling-cup system is provided, which includes an iliac posterior pile screw, an iliac anterior pile screw, a pubic pile screw, an ischial pile screw, abutments, a 3D (three-dimensional) printed porous titanium mesh cup, locking screws, nuts, and tail cap screws. Four pile screws are the iliac posterior pile screw facing posterior of the ilium, the iliac anterior pile screw facing iliac tubercle, the ischial pile screw running along ischium ramus, and the pubic pile screw running along pubic ramus. A stable prothesis support system is formed in the acetabular reconstruction prosthesis with a piling-cup system, which conforms to the biomechanical characteristics of physiological pelvis, reduces the risk of prosthesis loosening and dislocation, and improves long-term stability of the prosthesis through biological fixation.

Abstract: The present disclosure provides an anti-tumor polypeptide Bax-BH3, a fluorescent polymeric nanomicelle, a preparation method and use thereof, belonging to the technical field of medicines. The anti-tumor polypeptide Bax-BH3 has an amino acid sequence set forth in SEQ ID No: 1; the fluorescent polymeric nanomicelle includes the anti-tumor polypeptide Bax-BH3 and a polymer carrier; and the polymer carrier is a block copolymer RGD-PHPMA-b-Poly(MMA-alt-(Rhob-MA)). In the present disclosure, the anti-tumor polypeptide Bax-BH3 has desirable biocompatibility and biological activity; and the fluorescent polymeric nanomicelle encapsulates the anti-tumor polypeptide Bax-BH3 by the block copolymer RGD-PHPMA-b-Poly(MMA-alt-(Rhob-MA)), with high encapsulation rate and drug loading, and good release performance.

Abstract: A reinforcement learning algorithm-based predictive control method for lateral and longitudinal coupled vehicle formation includes S1, combining a 3-DOF vehicle dynamics model that takes into account a nonlinear magic formula tire model with a lane keeping model and establishing a vehicle formation model; S2, constructing a distributed control framework and designing a local predictive controller for each following vehicle based on the vehicle formation model under the control framework; S3, using a reinforcement learning algorithm to solve the optimal control strategy of the local predictive controller, and applying the optimal control strategy to the target following vehicle. The present application completes the lateral and longitudinal coupled modeling of vehicle formation and considers the nonlinear characteristics of tires. In addition, the present application also transforms the global optimization problem of vehicle formation into a local optimization problem of each following vehicle.

Abstract: A four-mode dual-motor coupled electric drive axle, including a primary drive motor, an auxiliary drive motor, a reducer, a torque vectoring (TV) coupler, a power coupling differential, a housing, and a power output mechanism. The TV coupler is switchable among disconnected mode, TV mode, and reducer mode by controlling a first clutch and a second clutch. The power coupling differential is switchable between torque coupling mode and speed coupling mode by controlling a third clutch. The electric drive axle is switchable among single-motor drive mode, TV drive mode, dual-motor torque coupling drive mode, and dual-motor speed coupling drive mode by controlling the TV coupler and the power coupling differential.

Abstract: The present disclosure provides a near-infrared (NIR) photothermal catalyst and a preparation method and use thereof. The method includes: mixing a graphene oxide (GO) dispersion and a dehydrating agent to obtain a GO solution; mixing the GO solution and branched polyethyleneimine (PEI) and then drying to obtain a GO-PEI carrier; and mixing the GO-PEI carrier with water and adjusting a pH value to be within a range of 2 to 4.5, adding dropwise a monosubstituted Keggin-type polyoxometalate (POM) aqueous solution, and conducting an ion replacement reaction to obtain the NIR photothermal catalyst, wherein a solute of the monosubstituted Keggin-type POM aqueous solution is K6SiW11Co(H2O)O39 or H4SiW11Ce(H2O)4O39.

Abstract: A dual-mode electric drive axle with torque parallel coupling and torque vectoring, including: a main motor, an auxiliary motor, a spur gear differential, a first half shaft, a second half shaft, a primary reducer, a secondary reducer, a dual-planetary gear set mechanism, a first clutch, a second clutch and a primary housing. The main motor and the auxiliary motor are respectively connected to input ends of the primary reducer and the secondary reducer. Output ends of the primary reducer and the secondary reducer are respectively connected to a housing of the spur gear differential and a gear ring of the dual-planetary gear set mechanism. A planet carrier of the dual-planetary gear set mechanism is connected to a sun gear through a first clutch, and a gear ring through a second clutch. A characteristic parameter of the dual-planetary gear set mechanism is 2.

Abstract: Disclosed are an encryption and decryption method and device based on bit permutation and bit transformation. The method includes: configuring a memory space, and preparing corresponding storage spaces for a plaintext file, a ciphertext file and a key file; changing a bit value of an initial key stream according to a bit operation rule, so as to obtain a bit-transformed key stream, changing a bit value of a plaintext according to the bit operation rule depending on the key stream; on the basis of a bit-transformed plaintext stream, according to a bit permutation rule depending on the key stream, performing a bit permutation operation on the bit-transformed plaintext stream, and randomly distributing the plaintext stream in a ciphertext stream, so as to obtain a target ciphertext and store the same as a file.

Abstract: The present invention provides a self-powered integrated sensing and communication (ISAC) interactive method of high-speed railway based on hierarchical deep reinforcement learning (HDRL), including: Constructing an integrated system framework for passive sensing and communication of high-speed train, where the passive sensor is mainly used for receiving train status information, and the access point (AP) is utilized for status information sensing of the train; During the remote communication between the AP and the base station (BS), Gaussian mixture model (GMM) clustering method is utilized for obtaining reference handover triggering points and completing the communication handover; Proposing an option-based HDRL algorithm to train the high-speed train agent so as to implement the dynamic autonomous switching process of information sensing and remote communication, thereby ensuring the minimum of task completion time and the timely charging for sensors.

Abstract: The invention provides a pharmaceutical composition of hyaluronic acid comprising repeating units of a disaccharide comprising glucuronic acid and N-acetylglucosamine, wherein a portion of the N-acetyl groups of the N-acetylglucosamine have been independently replaced with a group of the formula —N—C(O)—(C2-C4)-alkyl for treating hyperuicemia and gouty arthritis. Studies show that this composition is promising as an anti-gout therapeutic agent, which combines both anti-inflammatory actions as well as anti uracemic effects.

Abstract: A multi-mode torque vectoring electric drive axle, including a main motor, an auxiliary motor, a differential, a first half shaft, a second half shaft, a primary reducer, a secondary reducer, a planetary gear set, a dual-gear mechanism and a three-phase actuator. The main motor and the auxiliary motor are respectively connected to input ends of the primary reducer and the secondary reducer. Output ends of the primary reducer and the secondary reducer are respectively connected to a differential housing and an input end of the planetary gear set. Two output ends of the planetary gear set are respectively connected to the three-phase actuator and the dual-gear mechanism. An output end of the dual-gear mechanism is connected to the differential housing. The three-phase actuator is a synchronous shifting mechanism for enabling locking, decoupling of the planetary gear set, and connection to the first half shaft.

Abstract: An iron/shikonin nano-composite and a use thereof, and a method for preparing the same by supermolecular self-assembly, belonging to the technical field of functional materials. The composite consists of shikonin and ferric ions, wherein shikonin is coordinated with the ferric ions, and the hydroxyl and carbonyl groups in shikonin are coordinated with the ferric irons to form a complex, which is then assembled by ?-? stacking and hydrophobic interactions to form a nano-composite which exhibits glutathione response. The composite is obtained by the following steps: adding an aqueous solution of a ferric salt and an organic solvent solution of shikonin in sequence into water while stirring at ambient temperature, continuously stirring at ambient temperature, and centrifuging the resulting mixture to purify, thereby obtaining an iron/shikonin nano-composite in the resulting solution.

Abstract: The present disclosure relates to a traceable in-situ micro- and nano-indentation testing instrument and method under variable temperature conditions. A macro-micro switchable mechanical loading module, a nano mechanical loading module and an indentation position optical positioning module are fixed on a gantry beam, an optical imaging axis of an optical microscopic in-situ observation or alignment module and a loading axis of the nano mechanical loading module are coplanar, the optical microscopic in-situ observation or alignment module and the function switchable module are mounted on a table top of a marble pedestal, and a contact or ambient mixed variable temperature module is fixedly mounted on the function switchable module. A modular design is adopted, the micro- and nano-indentation testing instrument is used as a core, in combination with a multi-stage vacuum or ambient chamber, an indentation depth traceability calibration module and multiple sets of optical microscopic imaging assemblies.

Abstract: A rigid-flexible coupled unmanned aerial vehicle (UAV) morphing wing and an additive manufacturing method thereof are disclosed. A shape memory alloy (SMA) strip/wire for controlling the wing upward deformation and an SMA strip/wire for controlling the wing downward deformation are arranged alternately, and a plurality of reinforcing ribs are arranged at intervals on the SMA strips/wires for controlling the wing upward deformation and the SMA strips/wires for controlling the wing downward deformation. The SMA strips/wires for controlling the wing upward deformation and the SMA strips/wires for controlling the wing downward deformation are arranged on a flexible substrate, and are wrapped with an insulating covering. The SMA strips/wires for controlling the wing upward deformation and the SMA strips/wires for controlling the wing downward deformation each are provided with an electric heating element.

Abstract: Disclosed is an automobile tire burst simulation experiment device, which is fixed on a rim installed with an automobile tire. The automobile tire burst simulation experiment device comprises a pre-tightening triggering device, a retracting device, a storage battery and a controller, the tire burst simulation experiment device according to the present invention uses two drive motors to drive two sets of roller screw slide rails, so as to drive the breakdown device away from and close to the tire to achieve a simulated tire burst and rapid deflation. The experiment device has the characteristics of quick installation, low cost, strong versatility, and adjustable speed; the device can be applied to the tire burst experiment under different vehicle speeds and road conditions of various automobile models. The structure is simple and the simulation control accuracy is high. After the tire burst, the subsequent experiments of the vehicle are not affected.

Abstract: Disclosed is a method for realizing batch-based traceability for pork based on a QR code. Based on the QR code, user information is added to a web address carried by the QR code to realize the traceability for the pork. The method includes: 1) registering basic information of pigs in breeding and brokering processes; 2) printing an initial traceability QR code of a carcass in a slaughtering process; 3) adding user information to the initial traceability QR code in a selling process, and updating the user information to the traceability system; and 4) scanning the traceability QR code to recall data of the traceability system in a catering process to achieve transparent information. The pork and pork products are traced from production process to the selling process.

Abstract: The present disclosure provides an anti-tumor polypeptide Bax-BH3, a fluorescent polymeric nanomicelle, a preparation method and use thereof, belonging to the technical field of medicines. The anti-tumor polypeptide Bax-BH3 has an amino acid sequence set forth in SEQ ID No: 1; the fluorescent polymeric nanomicelle includes the anti-tumor polypeptide Bax-BH3 and a polymer carrier; and the polymer carrier is a block copolymer RGD-PHPMA-b-Poly(MMA-alt-(Rhob-MA)). In the present disclosure, the anti-tumor polypeptide Bax-BH3 has desirable biocompatibility and biological activity; and the fluorescent polymeric nanomicelle encapsulates the anti-tumor polypeptide Bax-BH3 by the block copolymer RGD-PHPMA-b-Poly(MMA-alt-(Rhob-MA)), with high encapsulation rate and drug loading, and good release performance.

Abstract: The disclosure belongs to the technical field of autonomous vehicle, in particular to an automatic driving acceleration test method considering efficiency and coverage, which includes the following steps. Step 1 is definition of scenario test priority. Step 2 is zone division. Step 3 is search within zones. Step 4 is update of scenario test priorities. Step 5 is iterative test. After selecting the automatic driving function to be tested and setting the parameters of the vehicle operation zone, the scenario generation range is formed. The coverage of the test scenario is improved by dividing the generated range and setting the freedom of early autonomous driving exploration. The efficiency of the test process is improved by continuously improving the probability of generating dangerous scenarios in the test process. Thus, it is ensured that the generated test scenarios take into account both test efficiency and test coverage.

Abstract: The present invention discloses a wireless perception system energy and information transmission method of an unmanned aerial vehicle (UAV) swarm, comprising: building a wireless perception system architecture based on multi-UAV energy supply, wherein the system comprises a plurality of wireless powered sensors and a UAV swarm, and each sensor establishes connection with a UAV based on random access to realize network construction; designing energy and information transmission protocols in the swarm and between the swarm and the sensors, designing a joint optimization algorithm and solving optimal system configuration to obtain optimal transmission strategies. The present invention firstly proposes a joint optimization method of multi-network power allocation, time slot design and beam forming under the condition of multi-UAV autonomous collaborative energy supply, and also provides an efficient and reliable communication means for autonomous cooperative control of the UAV swarm.

Abstract: A separated prosthetic foot with a transverse arch belongs to the technical field of manufacturing of artificial limbs. The characteristics of the transverse arch of the human foot are combined into the previous transverse-straight carbon fiber foot design to improve the stiffness of the prosthetic foot and reduce the weight of the prosthetic foot. A forefoot part employs a separated curved plate design, and two simple curved plates with different curvatures are used for simulating a complex curved surface of the transverse arch of the human, such that the manufacturing cost is reduced, and the various parts of the sole are non-uniform in stiffness distribution: the outer side of the foot is a single-layer forefoot plate with a smaller curvature and minor stiffness; and the inner side of the foot is a double-layer stacked forefoot plate, and the lower layer plate has a large radius in curvature and stiffness.