Abstract: A control circuit for an isolated power supply is disclosed, the control circuit includes a secondary-side drive signal generator, a secondary-side transistor switch turn-off detector and a primary-side control signal generator. The primary-side control signal generator is configured to: determine a second turn-on instant referring to an turn-off instant of the secondary-side synchronous rectification transistor from the turn-off acknowledgement signal; determine a first turn-on instant referring to a supposed turn-on instant for the primary-side transistor switch from the feedback signal of the output voltage of the isolated power supply; and determine the turn-on instant for the primary-side transistor switch from the second turn-on instant or the first turn-on instant whichever is later, and responsively generate the primary-side transistor switch control signal.

Abstract: A controller, an isolated power converter and a control method are disclosed. The controller includes a primary-side regulator and a secondary-side regulator. The secondary-side regulator includes a secondary-side regulation signal generation module, which receives a feedback signal of an output voltage of the isolated power converter, generates a first control signal and couples the first control signal to the primary-side regulator. The primary-side regulator includes: a PSR module, which receives a voltage signal across a winding of the isolated power converter and generates a second control signal, thereby executing a PSR mode; a follow-up SSR module, which receives the first control signal and generates a third control signal, thereby executing an SSR mode; and a regulation switching module, which allows a switching between the PSR and SSR modes. The present invention allows the follow-up SSR module to enable the SSR mode, which avoids overshooting of the output voltage during startup.

Abstract: A robot system and a control method for nasotracheal intubation are provided. The robot system for nasotracheal intubation includes an operation console and an intubation operation device arranged at a bedside end of a mobile operating bed through a passive supporting arm. The intubation operation device includes a bronchoscope and a catheter connected with the bronchoscope, a bronchoscope bending device for controlling a tip of the bronchoscope to bend, a bronchoscope rotating device for controlling the bronchoscope to rotate integrally, a bronchoscope conveying device for controlling the bronchoscope to feed and withdraw, and a roller conveying device for controlling the catheter to feed in an auxiliary way. The intubation operation device is installed on the passive supporting arm through a supporting frame, and the tip of the bronchoscope corresponds to a position of a nasal cavity of a patient on the mobile operating bed.

Abstract: A corrosion-resistant and high toughness oil casing includes a chemical composition. The chemical composition includes, by mass %, C: 0.01% to 0.04%, Si: 0.1% to 0.8%, Mn: 0.05% to 0.25%, Cr: 11.0% to 14.0%, Mo: 1.5% to 2.8%, Cu: 0.5% to 1.8%, Ni: 3.7% to 5.0%, N: 0.03% to 0.05%, Al: 0.001% to 0.05%, B: 0.001% to 0.005%, Ti: 0.03% to 0.08%, La: 0.07% to 0.35%, Ce: 0.12% to 0.40%, P: 0.013% or less, S: 0.001% or less, and the balance being Fe and inevitable impurities. The mass % of the chemical composition satisfies the following relationships: [Ni]/[Cu]?3.0, and 4360?([Ni]+[Cr]+[Mo])/[B]?16200. The microstructure of the oil casing includes, in terms of volume fraction, 10% to 20% of a ferrite phase, 5% to 20% of a retained austenite phase and the balance of a tempered martensite phase.

Abstract: A camera module is provided, including a circuit board, a photosensitive element, an optical lens, and a filter element. The circuit board includes a substrate having a substrate front surface, a substrate back surface, and a substrate channel. The substrate front surface and the substrate back surface correspond to each other, and the substrate channel extends from the substrate front surface to the substrate back surface. The photosensitive element has a photosensitive area and a non-photosensitive area surrounding the photosensitive area. A first part of the non-photosensitive area is mounted on the back surface substrate. The photosensitive element and the substrate are conductively connected. The photosensitive area and a second part of the non-photosensitive area correspond to the substrate channel. The optical lens is held in a photosensitive path of the photosensitive element. The filter element is directly mounted on the substrate front surface of the substrate.

Abstract: A standardisation method and apparatus for erroneous transactions: receiving an erroneous service invocation request sent by a client terminal, and converting the erroneous service invocation request into a standard format exchange message; on the basis of a preset certificate database, encrypting sensitive data areas in the exchange message to generate encrypted message areas; signing key fields in the exchange message to generate signed message areas; and, by means of a two-way authenticated secure communication link, sending the exchange message comprising the encrypted message areas and the signed message areas to a UnionPay erroneous transaction network.

Abstract: A generative dialog model training method in the fields of artificial intelligence, such as deep learning, natural language processing, intelligent dialogs, is disclosed. The generative dialog model training method may include: in response to determination of an update of a safety specification, taking an updated safety specification as a target safety specification, and determining a dialog input corresponding to a current optimization according to the target safety specification, the update being performed on a previous safety specification when a generative dialog model after last optimization is determined not to meet a launch requirement; and optimizing the generative dialog model according to the dialog input and a principle that a reply generated by the generative dialog model conforms to the target safety specification, the generative dialog model being configured to generate the reply corresponding to the dialog input.

Abstract: A ketorolac liquid composition, a preparation method therefor, and an application thereof are provided. The ketorolac liquid composition contains ketorolac tromethamine, a stabilizer, a buffer, an osmotic pressure regulator, and a pH regulator. The ketorolac liquid composition does not contain ethanol. The concentration of ketorolac tromethamine is 0.15 mmol/L-160.00 mmol/L, and the concentration refers to a ratio of a molar amount of the ketorolac tromethamine to a volume of the ketorolac liquid composition. The ketorolac liquid composition does not contain an organic solvent, has stable physical and chemical properties, and has less in-vivo irritation.

Abstract: A packet transmission method includes: after an output forwarding and processing unit obtains a packet, if the packet belongs to a deterministic flow, storing the packet into a deterministic flow input queue; for each packet in the deterministic flow input queue, determining encapsulation information corresponding to the packet, wherein the encapsulation information at least includes cyclic queue (CQ) queue information; encapsulating the packet based on the encapsulation information, and storing the packet into a deterministic flow output queue; obtaining, by an output interface unit, a packet from the deterministic flow output queue and based on the CQ queue information corresponding to the packet, storing the packet into a CQ queue corresponding to the CQ queue information; determining, by the output interface unit, a target CQ queue corresponding to a current scheduling cycle, and sending a packet in the target CQ queue to an external device within the current scheduling cycle.

Abstract: This application discloses example frequency control methods, frequency controllers, processors, and electronic devices. One example method includes obtaining at least two temperatures of a processor core, where each of the at least two temperatures corresponds to a frequency. A load change mode of the processor core is determined, where the load change mode indicates a change status of a load of the processor core. A target temperature is determined from the at least two temperatures of the processor core based on the load change mode. A frequency of the processor core is adjusted based on the target temperature.

Abstract: A sacubitril valsartan sodium sustained-release composition is a 24-hour sustained-release drug. Dissolution of sacubitril and valsartan simultaneously satisfies the following three features: A) dissolving no more than 40% of pharmaceutical active ingredients within 2 hours; B) dissolving 20%-75% of the pharmaceutical active ingredients within 8 hours; and C) dissolving not less than 65% of the pharmaceutical active ingredients within 24 hours. Compared with common gel sustained-release dosage forms, sacubitril and valsartan in the composition can achieve synchronous sustained release; moreover, the drug release behavior is not affected by factors such as the pH of a medium environment, gastrointestinal peristalsis, and foods, the in vivo and in vitro correlation is good, gentle release within 24 hours is achieved, and the therapeutic effect is good.

Abstract: Embodiments of this application relate to a digital certificate verification method and apparatus, a computer device, and a storage medium. The digital certificate verification method is performed by a authentication center, and include receiving a verification request for verifying a target digital certificate; obtaining a target transaction record corresponding to the target digital certificate from a blockchain, the target digital certificate being stored in the blockchain as a transaction resource; obtaining a target account type corresponding to the target transaction record, different account types corresponding to different certificate operation states; and determining a verification result corresponding to the target digital certificate according to the target account type.

Abstract: A rotor for power driving includes a hub, a plurality of first fixed jibs, a plurality of second fixed jibs, and a plurality of outer vanes. The hub is adapted to be coupled with a shaft to rotate together in a single rotational direction. The first fixed jibs are arranged around the hub circumferentially. Each second fixed jib is engaged on an end of a corresponding first fixed jib. Each outer vane is elastically fixed at a corresponding second fixed jib and extends in a direction different from the single rotation direction when not acted upon by external forces such that the plurality of outer vanes, when acted upon by external forces, are elastically movable relative to corresponding second fixed jibs to drive the shaft to rotate along the single rotational direction and can rebound after removal of the external forces.

Abstract: An electro-pneumatic intelligent syringe includes an injection assembly including a fixing component and a moving component, and a pneumatic assembly including an airway component and a pneumatic component. The electro-pneumatic intelligent syringe can operate intelligently and automatically, which provides equipment support for achieving automatic injection.

Abstract: Disclosing a catheter, comprising a tubular elongated body. The tubular elongated body extends along a longitudinal axis between a proximal end and a distal end. The tubular elongated body has a lumen. At least a portion of the tubular elongated body is defined by a first coil. The first coil comprises a plurality of windings extending along and around the longitudinal axis. The first coil comprises at least one first region arranged near the distal end of the tubular elongated body and including a plurality of adjacent windings. The first region has a plurality of windings inserted from at least one second coil therein. The inserted windings of the second coil are positioned between the windings of the first coil; and the first coil further comprises at least one second region including a plurality of adjacent windings. The second region does not have windings inserted from the second coil.

Abstract: A power stage circuit generates an output signal according to an input signal and a control signal. A ramp generator circuit generates a ramp signal according to the control signal, the input signal, and the output signal. A calculation circuit generates a calculation signal according to the output signal and a reference signal. The calculation circuit operates in a first mode when the power converter operates in a light loading state, and the calculation circuit operates in a second mode when the power converter operates in a normal state. A control circuit generates the control signal according to the calculation signal and the ramp signal. The control circuit includes a comparator circuit and a control signal generator. The comparator circuit generates a comparison signal according to the calculation signal and the ramp signal. The control signal generator generates the control signal according to the comparison signal.

Abstract: A pazopanib oral pharmaceutical composition, and a preparation method therefor and the use thereof are provided. The pazopanib oral pharmaceutical composition contains an active drug, a polymer carrier, an organic solvent and/or water. The active drug is 5-[[4-[(2,3-dimethyl-2H-indazol-6-yl)methylamino]pyrimidin-2-yl]amino]-2-methylbenzenesulfonamide as represented by formula I or a salt thereof. Dispersion of pazopanib in the form of a solution can significantly improve the solubility and dissolution rate of pazopanib, can significantly increase the drug bioavailability, and can also improve the compliance of a patient and solve the problems of dysphagia in elderly patients, etc.

Abstract: A method for asymmetric synthesis of (?)-Anisomelic Acid is provided in the present invention, a chiral compound (?)-Costunolide is used as a starting material, a key intermediate is obtained by a regioselective ozone decomposition reaction, then carbon chain extension is performed by a Horner-Wadsworth-Emmons (HWE) reaction and a Peterson olefination reaction, and a (?)-anisomelic acid fourteen-membered carbocyclic skeleton is constructed by a ring-closing metathesis (RCM) reaction, laying an important foundation for subsequent (?)-anisomelic acid biological activity research, in the synthesis route, various (?)-anisomelic acid analogs can also be obtained from the key intermediate, the reaction operations in the synthesis route are simple and the present invention can be widely popularized and used.

Abstract: A refrigeration system includes a compressor, a condenser, a throttling device, and an evaporator, which are connected in sequence to form a cooling circuit, the refrigeration system further includes an oil recovery system which includes: an operation chamber, which includes a first port communicating with an oil-containing position in the refrigeration system through a first pipeline, and a second port communicating with a bearing chamber or a bearing lubrication pipeline of the compressor through a second pipeline; and a main piston in the operation chamber, the main piston reciprocating in the operation chamber to perform an extraction stroke and a discharge stroke; in the extraction stroke, an oil-containing refrigerant in the oil-containing position in the refrigeration system is extracted to the operation chamber; and in the discharge stroke, the oil-containing refrigerant in the operation chamber is delivered to the bearing chamber or the bearing lubrication pipeline of the compressor.

Abstract: An output short-circuit protection method, a power management chip and a switched-mode power supply are disclosed. When current accumulation has occurred in a power transistor, the number of consecutive current pulses during which the current accumulation occurred is counted. Upon the number of consecutive current pulses reaches a preset value, a regulation interval spanning switching periods is triggered, for at least some of the switching periods, the leading-edge blanking time is shortened or cancelled. In this way, an excessively large current flowing through the power transistor is prevented. Compared with existing fault response measures for power management chips, restart of the power supply and adjustment of the system timing are not needed, allowing easier implementation. Further, the automatic restart during chip start up due to false triggering as found in the existing measures for power management chips is circumvented.