Abstract: Disclosed is recombinant Escherichia coli for producing L-tyrosine and application thereof, and belongs to the technical fields of genetic engineering and bioengineering. According to the present disclosure, genes aroP and tyrP are knocked out, expresses the endogenous gene yddG of E. coli, then heterologously expresses fpk from Bifidobacterium adolescentis, expresses the endogenous genes ppsA and tktA of E. coli, and then expresses aroGfbr and tyrAfbr. Knocking out tyrR, trpE and pheA, so that the synthesis flux of L-tyrosine is increased. Finally, an endogenous gene poxB is knocked out to realize stable fermentation performance at high glucose concentration.

Abstract: An electronic ball lock is disclosed, including: a front ball lock body, where the front ball lock body includes a front fixed frame and a front sleeve rotatably arranged on the front fixed frame; a rear ball lock body; a connecting rod having one end connected with the rear ball lock body and the other end provided with a driving member extending into the front fixed frame; an electric clutch mechanism arranged in the front fixed frame and capable of driving the front sleeve to be coupled with or separated from the driving member; and an identification module arranged on the front ball lock body and electrically connected with the electric clutch mechanism.

Abstract: A high-pressure liquid delivery system under a high centrifugal acceleration condition on an arm-centrifuge, comprising a centrifuge main engine, a ground liquid source, a ground delivery conduit, a centrifuge bottom rotary joint, a centrifuge rotary arm delivery conduit, a rotary arm-basket pin roll, a basket rotary joint, a basket delivery conduit and a basket conduit outlet. According to the present disclosure, the basket rotary joint is introduced to adapt to the change of the basket-rotary arm angle before and after the arm-type basket centrifuge works, so that the demand for water, electricity, oil and gas transportation of the centrifuge is met. Therefore, the design for the conduit of the centrifuge-basket part is solidified, and compared with the traditional solution that a high-pressure hose is connected to the basket, the centrifugal acceleration load of the load can be increased to more than 500 g.

Abstract: A barrier structure for bearing a high-energy impact and construction method thereof are provided. The barrier structure includes a supporting pile array arranged between two opposite mountain slope surfaces. The supporting pile array is arranged in a straight line and includes two or more supporting piles. The two or more supporting piles are fixed at a lower part of a mountain. A barrier net is connected to the two or more supporting piles. The barrier net passes through the supporting pile array and extends to the two opposite mountain slope surfaces. The barrier net is fixed on the two opposite mountain slope surfaces. Pull plates are disposed on the two opposite mountain slope surfaces, and one side of each of the pull plates is fixed to a corresponding slope surface of the two opposite mountain slope surfaces through reverse prestressed anchor cables.

Abstract: A circuit for sensing a current comprises a substrate having a first and a second major surface, the second major surface being opposite to the first major surface. At least one magnetic field sensing element is arranged on the first major surface of the substrate and is suitable for sensing a magnetic field caused by a current flow in a current conductor coupled to the second major surface. The substrate also comprises at least one insulation layer, substantially buried between the first major surface and the second major surface of the substrate.

Abstract: A combined platform for testing fireproof materials for cables includes a main frame for providing operating space; an air circulation system including a fresh air supply unit for supplying fresh air into the operating space and an exhaust gas treatment unit for treating the gas in the operating space under set conditions; an open flame system for providing an open flame for testing cables; a water circulation system for supplying water at least to the exhaust gas treatment unit and the operating space; and a control system for collecting at least the temperature and gas concentration in the operating space, and performing process control based on the collected results. The actual working conditions of scenarios such as fire-resistant cable tunnels and fire-resistant cable trenches can be simulated, and multiple tests such as combustion performance test and physical and chemical performance test can be carried out under various working conditions.

Abstract: Disclosed are a ring-modified proline short peptide compound and the use thereof, and specifically disclosed is a compound represented by formula (X) or a pharmaceutically acceptable salt thereof.

Abstract: This application describes examples of a differential device, a powertrain, and a vehicle. In one example, the differential device includes a housing, three planetary gears, two side gears, and at least one window. Each of the three planetary gears is mounted on an inner wall of the housing through a pin shaft, the three planetary gears are disposed spaced from each other along a circumferential direction of the housing. The two side gears are disposed on two sides of the three planetary gears along the axial direction of the housing and meshed with the three planetary gears. The main reduction gear drives the housing to rotate around the axial direction of the housing, so that the three planetary gears drive the two side gears to drive two drive shafts respectively.

Abstract: A three-dimensional measurement method combines the three-step phase shift method to embed the marker line information into the sinusoidal stripe pattern to obtain the target stripe pattern. The target stripe pattern is projected onto the surface of the object to be measured, and the wrapped phase image, mean intensity image and modulated intensity image of the stripe pattern collected by the left and right cameras are solved. The mask image according to the mean intensity image and modulation intensity image is solved to extract the marker line. The spatial phase unwrapping starting from the marker line in the wrapped phase image is performed to obtain the spatial phase. The spatial phase matching based on the unique correspondence between the left and right cameras based on the spatial phase of the marker line is performed, the best matching point of the right camera is obtained.

Abstract: A radio resource configuration adjustment method includes detecting, by user equipment, an overheating problem or that the overheating problem is alleviated, and sending, by the user equipment, a first message to a network device, where the first message is used to notify the network device that the overheating problem occurs in the user equipment or the overheating problem is alleviated; receiving, by the user equipment, a response message sent by the network device, where the response message is used to instruct the user equipment to perform one of the following operations, and the operations include deactivating a secondary serving cell, activating a secondary serving cell, releasing a secondary serving cell, and adding a secondary serving cell; and deactivating, by the user equipment, a secondary serving cell, or activating a secondary serving cell, or releasing a secondary serving cell, or adding a secondary serving cell according to the response message.

Abstract: Protecting data privacy in secure multi-party computation and communication is provided. A method of protecting data privacy includes determining a differential privacy configuration, determining a number of iterations based on a first parameter and a second parameter, and for each of the number of iterations generating a random value and a random noise data; generating a first message and a second message; and performing a transfer based on the first message, the second message, and an input data to output one of the first message and the second message. The method also includes generating a first noise data based on the random noise data in each of the number of iterations, generating a first share based on a first dataset and a second dataset, applying the first noise data to the first share, and constructing a result based on the first share and a second share.

Abstract: A barrier structure for bearing a high-energy impact and construction method thereof are provided. The barrier structure includes a supporting pile array arranged between two opposite mountain slope surfaces. The supporting pile array is arranged in a straight line and includes two or more supporting piles. The two or more supporting piles are fixed at a lower part of a mountain. A barrier net is connected to the two or more supporting piles. The barrier net passes through the supporting pile array and extends to the two opposite mountain slope surfaces. The barrier net is fixed on the two opposite mountain slope surfaces. Pull plates are disposed on the two opposite mountain slope surfaces, and one side of each of the pull plates is fixed to a corresponding slope surface of the two opposite mountain slope surfaces through reverse prestressed anchor cables.

Abstract: A magnetic levitation test system and an electromagnet test method. A vehicle-mounted controller (1024), an electromagnet controller, and an electromagnet are subjected to joint test by means of the magnetic levitation test system integrated with a vehicle-mounted controller test bed (102), an electromagnet controller test bed (104), and an electromagnet test bed (106). The running condition of a train can be simulated, and the vehicle-mounted controller (1024), the electromagnet controller, and the electromagnet are subjected to joint test under the simulated running condition of the train. Therefore, the vehicle-mounted controller (1024), the electromagnet controller, and the electromagnet are subjected to function verification, thereby reducing the fault rate when the vehicle-mounted controller (1024), the electromagnet controller, and the electromagnet are used at the same time.

Abstract: A hardware acceleration method includes obtaining compilation policy information and a source code, where the compilation policy information indicates that a first code type matches a first processor and a second code type matches a second processor; analyzing a code segment in the source code according to the compilation policy information; determining a first code segment belonging to the first code type or a second code segment belonging to the second code type; compiling the first code segment into a first executable code; sending the first executable code to the first processor; compiling the second code segment into a second executable code; and sending the second executable code to the second processor.

Abstract: The present application provides anti-IGFBP7 constructs that bind to IGFBP7 (e.g., anti-IGFBP7 antibodies), nucleic acid molecules encoding an amino acid sequence of the anti-IGFBP7, vectors comprising the nucleic acid molecules, host cells containing the vectors, methods of preparing the anti-IGFBP7 construct, pharmaceutical compositions containing the anti-IGFBP7 construct, and methods of using the anti-IGFBP7 construct or compositions.

Abstract: An autonomous system for providing consistent images of leaves of plants is disclosed which includes a mobility system configured to move from an originating position to a position above a plant in a field, a robotic system coupled to the mobility system, the robotic system includes a manipulator providing a plurality of degrees of freedom, and an imaging system having an imaging chamber and one or more cameras, the imaging system coupled to the manipulator, the manipulator and the imaging system cooperate to position the imaging system about a leaf of a plant such that the manipulator articulates the imaging chamber substantially parallel and in line with the leaf and further moves the imaging system so that the leaf enters the imaging chamber thereby allowing the imaging system to obtain images of the leaf.

Abstract: The invention provides a power supply including at least one power output port, at least one status alert component, and at least one output port status monitoring module. The status alert component generates at least one visual prompt based on an alert signal. The output port status monitoring module includes at least one temperature sensor adjacent to the power output port, a microcontroller connected to the temperature sensor and sensing an output current from the power output port, and a reset signal generator connected to the microcontroller. The microcontroller comprises at least one port status alert condition that takes a temperature and the output current of the power output port as decision factors. The microcontroller outputs the alert signal to the status alert component when the port status alert condition is met and maintains the status until a reset signal provided by the reset signal generator is received.

Abstract: An autonomous system for providing consistent images of leaves of plants is disclosed which includes a mobility unit configured to move from an originating position to a position about a plant in a field, one or more vacuum units coupled to the mobility unit configured to be positioned above one or more leaves of the plant, the one or more vacuum units each having one or more fans coupled to an air inlet having a grate, and configured to elevate the one or more leaves of the plant onto the grate, one or more imaging systems each having one or more cameras configured to obtain images from the one or more leaves of the plant, and a controller configured to control position of the mobility unit and activate the one or more imaging system to thereby obtain images from the one or more leaves of the plant.

Abstract: The present invention discloses a right-angle turning method for small-diameter TBM exploration adit excavation and belongs to the field of geological exploration of water conservancy and hydropower projects.