Abstract: A method for MRI performs motion-corrected reconstruction using a one-time k-space processing step followed by efficient parallel reconstruction using a simple forward model operator. Local kernel operators are generated and applied to motion-corrupted k-space data to produced clean k-space data. Images are then efficiently reconstructed from the cleaned k-space data. This motion-corrected MRI reconstruction technique incorporates many motion states per acquisition from high-temporal-resolution tracking. It jointly corrects trajectory perturbations, coil reweighting, and ?B0-induced phase changes, enabling fast, high-quality reconstruction of strongly motion-corrupted data.

Abstract: The disclosure relates to a switched-mode power supply circuit, a secondary control circuit, a chip, and an electronic device. The switched-mode power supply circuit includes a transformer, a secondary control circuit, a secondary transistor, and at least one discharging branch. In a case where no load is electrically connected to a discharging branch of at least one discharging branch, the secondary control circuit controls the discharge circuit to be in conduction to pull down a voltage at an output terminal of the discharging branch. Compared with the switched-mode power supply circuit according to the related art, the switched-mode power supply circuit achieves the technical effects of the load switch, the controller, and the filter circuit in the related art, the structure of the switched-mode power supply circuit is simplified, thereby resulting in a lower hardware cost of the switched-mode power supply circuit.

Abstract: The present disclosure discloses a high-yield fructosylated chondroitin-producing Escherichia coli and its application thereof, belonging to the technical field of microbiology. On the basis of E. coli K4, the present disclosure constructs a strain with enhanced fructosylated chondroitin synthesis capacity by mutating genes encoding key enzymes in a fructosylated chondroitin synthesis pathway. The yield of fructosylated chondroitin produced by this strain reaches 10 g/L in a 5 L fermenter and 15-20 g/L in a 100 L fermenter. The obtained final product has a uniform structure and stable quality, which effectively reduces the production costs and the risk of environmental pollution, thus being suitable for large-scale industrial production applications.

Abstract: Disclosed is a preparation method for sodium chondroitin sulfate and use thereof. The preparation of sodium chondroitin sulfate includes: dispersing unsulfated sodium chondroitin with an organic solvent, adding a sulfonating reagent so as to carry out a sulfonation reaction, and then terminating the reaction, carrying out centrifugation, and collecting precipitate; and then decolorizing and drying a collected precipitate to obtain sodium chondroitin sulfate. An average molecular weight of a final product obtained by the method is controllable, and a batch-to-batch product quality is stable. The sodium chondroitin sulfate is more suitable for absorption by a body, has high bioavailability, and offers higher safety and efficacy. Moreover, this method can be realized without complex extraction and purification processes.

Abstract: Various examples, systems, and methods relate to facilitating memory use by a hardware accelerator. A system can check whether an on-chip memory region has already been set up for a given use. If it has, the system can reuse it. If not, the system can allocate a new region and connect it to a larger off-chip memory. The system can determine whether to load data into on-chip memory or save data back to off-chip memory based on various rules.

Abstract: A recombinant strain of N-acyl-homoserine lactonase AIO6 without resistance selection marker and its application are provided. The method for constructing a recombinant Escherichia coli strain without resistance selection marker includes introducing the coding gene of N-acyl-homoserine lactonase AIO6 into recipient Escherichia coli, followed by screening without antibiotic resistance markers to obtain the recombinant E. coli. The construction of this recombinant strain of N-acyl-homoserine lactonase AIO6 without resistance selection marker significantly enhances the application of AIO6 in production. Moreover, compared to previously reported AIO6 strains, the N-acyl-homoserine lactonase activity of this strain has been further improved.

Abstract: The present invention relates to the technical field of electrical connection protection, disclosing an electrical connection protection system, an electrical protection connecting head, an electrical device and a power supply apparatus. The electrical connection protection system comprises a first connection end for a power supply apparatus and a second connection end for an electrical device, the first connection end and the second connection end respectively comprising positive pole terminals capable of contacting each other to establish an electrical connection and negative pole terminals capable of contacting each other to establish an electrical connection, wherein when the first connection end and the second connection end are connected, the negative pole terminals of the first connection end and the second connection end contact each other before the positive pole terminals of the first connection end and the second connection end.

Abstract: A predictive fuzzy PID control method for an intelligent greenhouse includes: acquiring greenhouse real-time data, where the real-time data includes temperature data and humidity data; obtaining fuzzy quantity, control quantity and error data based on the real-time data, where the error data includes an error value and an error change rate; obtaining a target value based on the error data and a predictive functional control; controlling the target value and the error data for fuzzy inference, determining and adjusting parameters, and generating a control signal based on the parameters; and controlling greenhouse equipment adjustment based on the control signal to enable an output value of the equipment to approach the target value, and repeating the above steps to achieve continuous greenhouse environment control. This method achieves more accurate and efficient control of environmental parameters such as temperature, humidity, and illumination, and provides an optimal growing environment for plants.

Abstract: The present invention relates to crystalline forms of 2-(4-(4-(aminomethyl)-1-oxo-1,2-dihydrophthalazin-6-yl)-1-methyl-1H-pyrazol-5-yl)-4-chloro-6-cyclopropoxy-3-fluorobenzonitrile salt polymorphs, pharmaceutically acceptable compositions comprising these crystalline forms, and methods for using these crystalline forms.

Abstract: Semiconductor structure and forming method thereof are provided. The forming method includes: forming a substrate including a power rail region, the power rail region including a first area and a second area, the power rail region having a first fin and a second fin spanning the second area; forming sidewall spacers on sidewall surfaces of the first fin and the second fin after forming the first fin and the second fin; forming a first patterned layer on the substrate, the first patterned layer having a first opening in the first patterned layer exposing the power rail region; etching the substrate using the first patterned layer as a mask to form power rail openings in the substrate; forming isolation films on inner wall surfaces of the power rail openings; and forming buried power rails in the power rail openings after forming the isolation films.

Abstract: Multilayer compositions may include at least one first layer containing a thermoset resin; and a second layer emplaced on the at least one first layer and containing a reaction product of: an isocyanate component containing one or more isocyanate compounds; and an isocyanate-reactive component containing: one or more polyether polyols, one or more aliphatic polyols; and one or more hollow particles present in at least one of the isocyanate component, the isocyanate-reactive component, or a third component. Methods may include preparing a multilayer composition, including depositing at least one layer of a thermoset resin on a substrate; and disposing a second layer on the at least one layer of thermoset resin.

Abstract: The present invention relates to crystalline forms of 2-(4-(4-(aminomethyl)-1-oxo-1,2-dihydrophthalazin-6-yl)-1-methyl-1H-pyrazol-5-yl)-4-chloro-6-cyclopropoxy-3-fluorobenzonitrile hydrochloride salt, pharmaceutically acceptable compositions comprising these crystalline forms, and methods for using these crystalline forms.

Abstract: Embodiments of this specification provide a user identity-based payment method and apparatus. The user identity-based payment method includes: obtaining a payment request of a payment user that is sent by a merchant system, where the payment request carries an identity type corresponding to a payment channel for submitting the payment request; detecting whether the payment user performs identity verification authorization for the identity type; if yes, verifying whether user identity information obtained based on the identity verification authorization matches the identity type; and if the user identity information matches the identity type, determining a payment policy corresponding to the identity type in a merchant subscription configuration, and performing payment processing for the payment request based on the payment policy.

Abstract: The present disclosure discloses a wave matrix-based cascaded metasurface electromagnetic transmission modeling and analysis method, as well as a cascaded metasurface, which belong to the field of high-frequency communication and artificial electromagnetic metasurface technology. The method takes wave matrix theory as the core, the cascaded structure contains dielectric spacers and n thin-sheet admittance layers, the total electric field is the sum of forward and backward propagation fields, combined with the 90° rotation matrix, the magnetic field expression is obtained. It is equivalent to a four-port network, correlating the wave matrix with the scattering and transmission matrices, the wave matrices of each layer are combined to obtain the overall wave matrix, an isolating dielectric is introduced for correction, and the parameters are solved to complete the modeling.

Abstract: The present disclosure, relating to the technical field of power electronics, provides a multi-output flyback converter, a control method therefor, a switched-mode power supply, and a chip. The multi-output flyback converter according to the present disclosure includes a multi-output flyback converter circuit, N load branches, and a controller. During a process in which the multi-output flyback converter circuit provides energy to the N load branches, the controller detects the load condition of the N load branches in real time. In a case where it is detected that a load branch enters a light-load state, the controller controls the load branch to be electrically disconnected from the multi-output flyback converter circuit to stop transferring energy to the load branch. Therefore, the switching loss of the light-load branch is reduced and the overall energy conversion efficiency of the multi-output flyback converter is improved.

Abstract: The present invention relates to hair coloring and/or bleaching compositions that can be applied at less aggressive pH environment using relatively low oxidizing agent amounts, as well as their kits and methods thereof. The compositions exhibit low odor and substantially reduced hair fiber damage, are compatible with current dyes and dye precursor systems and result in excellent dye deposition with substantially no lift.

Abstract: Disclosed are a regulation layer for a dissimilar metal friction welding interface and an aluminum-steel friction welding method. The regulation layer for a dissimilar metal friction welding interface includes a micro-texture arranged on a metal surface, and a paste spread at the micro-texture, where non-metal substances in the paste are completely volatilized before metallurgical bonding of dissimilar metals. The aluminum-steel friction welding method includes: preparing a micro-structure in a designated area on a surface of a stainless steel plate, mixing a zinc-20 aluminium (Zn-20Al) powder and ethanol under stirring into a paste, then uniformly spreading the paste in a micro-structure area on a surface of a base metal, and then performing a friction stir welding.

Abstract: A semiconductor structure and its fabrication method are provided. The semiconductor structure includes: a substrate including a base substrate, fins, and an isolation structure; a first dielectric layer; gate structures in the first dielectric layer, where each gate structure includes a gate electrode layer and a gate dielectric layer; air spacers and second spacers on sidewalls of gate electrode layers, where the air spacers are located between the gate electrode layers and the second spacers to expose the sidewalls of the gate electrode layers and the second spacers; source/drain layers in the fins at sides of each gate structure; first conductive structures in the first dielectric layer and on the source/drain layers; and a second dielectric layer on the first dielectric layer and the gate structures, located on the air spacers. The air spacers are also located between the first conductive structures and the gate electrode layers.

Abstract: Embodiments of the present disclosure provide a half-bridge flyback converter, a control method, and a control circuit. The control method includes: controlling a second primary switching transistor to be ON for a first duration in a first switching period in a case where the half-bridge flyback converter operates in a free resonant state, and in response to detecting, based on sampled voltage information of a secondary power circuit, that the second primary switching transistor is turned on, controlling a secondary switching transistor to be ON for a second duration, such that the half-bridge flyback converter is reverse-magnetized to generate a negative magnetizing current, and thus a voltage across the first primary switching transistor is reduced to zero. By controlling the first primary switching transistor to turn on, zero-voltage switching of the first primary switching transistor is achieved. With the method, noise of the half-bridge flyback converter is reduced.

Abstract: Systems and methods for changing transmission settings of a wireless communication device of a head-wearable device are disclosed. The method includes, obtaining first data from an inertial measurement unit, determining, based on the first data, that a head-wearable device is in motion, obtaining additional data from a second sensor, distinct from the inertial measurement unit, determining that the additional data indicates that the head-wearable device is donned by a user, causing a wireless communication device of the head-wearable device to operate using a set of one or more transmission settings. The method further includes, obtaining second data from the inertial measurement unit, determining, based on the second data, that the head-wearable device is not in motion, causing the wireless communication device to operate using a different set of one or more transmission settings, distinct from the set of one or more transmission settings.