Abstract: An article includes a ceramic matrix composite (CMC) vane arc segment for disposal about an engine central axis. The CMC vane arc segment includes first and second platforms and an airfoil section that extends therebetween. The airfoil section defines a radial stacking axis that is oblique to a Z-axis that is perpendicular to the engine central axis such that the radial stacking axis forms a non-zero angle with the Z-axis.

Abstract: A method of predicting preferred candidate viral strains for vaccine production is described herein. A machine learning framework for predicting preferred candidate viral strains is provided that emphasizes antigen-matching and yield predictions that correlate with features of viral proteins.

Abstract: An article includes a ceramic matrix composite (CMC) vane arc segment for disposal about an engine central axis. The CMC vane arc segment includes first and second platforms and an airfoil section that extends therebetween. The airfoil section defines a radial stacking axis that is oblique to a Z-axis that is perpendicular to the engine central axis such that the radial stacking axis forms a non-zero angle with the Z-axis.

Abstract: A method is disclosed for a design geometry of a ceramic matrix composite (CMC) vane arc segment that has a platform and an airfoil section that extends off of the platform. The platform defines an axially trailing face, an axially leading face that is circumferentially offset from the axially trailing face, and first and second circumferential faces. In the method, a modal excitation response of the platform is determined based upon an external engine operation excitation frequency. If the modal excitation response is greater than a target modal excitation response, the design geometry of the platform is adjusted to be detuned with the external engine operation excitation frequency by reducing an overhang distance of the platform in which the modal excitation response at the external engine operation excitation frequency is equal to or lower than the target modal excitation response.

Abstract: A vane assembly includes a vane having an outer platform with mount structure and an airfoil extending inwardly from the outer platform and formed of ceramic matrix composites (“CMC”). The vane having an internal cooling chamber. A metal baffle is received within the internal cooling chamber and extends beyond the outer platform. A bathtub seal has a central portion receiving the metal baffle. The metal baffle has a central chamber and cooling air holes to deliver cooling air into the internal cooling chamber. The bathtub seal having an inner wall and an outer wall outward of the metal baffle. The inner wall, the outer wall and a base wall define a bathtub seal chamber. The base wall is in contact with the outer platform. The vane is connected to the outer wall. The static structure is received within the bathtub seal chamber. A connection is configured to deliver pressurized air to the bathtub seal chamber. A gas turbine engine is also disclosed.

Abstract: The present disclosure relates to the technical field of piezoelectric ceramics polarization, and particularly relates to a high-temperature polarization method for strip-shaped or rod-shaped piezoelectric ceramics. The piezoelectric ceramics are heated to a temperature above a Curie temperature point in a closed polarization environment, and an electric domain turning resistance of the piezoelectric ceramics is reduced to a preset value. Voltages are applied to two ends of the piezoelectric ceramics, and an electric domain orientation of the piezoelectric ceramics are converted, through a temperature reduction and pressure increase method, to be consistent with a direction in which an electric field is applied. The piezoelectric ceramics are cooled to a room temperature, and polarization is completed. According to the method, voltages applied to two ends of a piezoelectric fiber can be reduced by reducing internal resistance of the piezoelectric fiber.

Abstract: Embodiments of the present disclosure relate to an object processing method, apparatus, readable medium and electronic device. The method includes: obtaining a target object to be processed; determining an object type of the target object; determining a task type corresponding to a target task for processing the target object; and inputting the target object, the object type and the task type into a pre-generated target model to obtain a target result output by the target model. The target model includes a feature extraction module, a plurality of object segmentation modules and a plurality of task processing modules, different object segmentation modules correspond to different object types, and different task processing modules correspond to different task types.

Abstract: Provided are a control circuit (100), a circuit board assembly, and a battery (200) parallel system. The control circuit (100) is disposed between a battery (200) and a busbar (300), and the control circuit (100) comprises an acquisition unit (1), a control unit (2), and a current-limiting circuit (3). The control unit (2) is used to start timing when the current of a positive electrode of the battery (200) is greater than a preset threshold, and after the duration of the voltage of the positive electrode of the battery (200) greater than a first preset threshold is greater than a preset time, reduces the current of the positive electrode of the battery (200) by means of controlling the current-limiting circuit (3), until the current of the positive electrode of the battery (200) is less than or equal to the preset threshold.

Abstract: A vane assembly includes a vane having an outer platform with mount structure and an airfoil extending inwardly from the outer platform and formed of ceramic matrix composites (“CMC”). The vane having an internal cooling chamber. A metal baffle is received within the internal cooling chamber and extends beyond the outer platform. A bathtub seal has a central portion receiving the metal baffle. The metal baffle has a central chamber and cooling air holes to deliver cooling air into the internal cooling chamber. The bathtub seal having an inner wall and an outer wall outward of the metal baffle. The inner wall, the outer wall and a base wall define a bathtub seal chamber. The base wall is in contact with the outer platform. The vane is connected to the outer wall. The static structure is received within the bathtub seal chamber. A connection is configured to deliver pressurized air to the bathtub seal chamber. A gas turbine engine is also disclosed.

Abstract: A method includes forming an airfoil, where the airfoil includes an airfoil wall that has a span between first and second radial ends and defines leading and trailing edges, pressure and suction sides each join the leading and trailing edges, and an internal cavity, the internal cavity is divided into at least first and second sub-cavities that extend over the span, and the first sub-cavity defines a venturi tube. The forming includes i) fabricating a fiber preform of the airfoil around a plurality of mandrels, wherein the mandrel in the first sub-cavity is radially split, and ii) densifying the fiber preform with a ceramic matrix. The airfoil may include an internal cavity that is divided into at least first and second sub-cavities extending over the span, where the first sub-cavity defines a venturi tube.

Abstract: A method of machining ceramic matrix composite components includes providing an ultrasonic vibration tool having a tool tip, and exciting the tool by providing a control current, such that the tool tip is repeatedly vibrated towards and away from a ceramic matrix composite workpiece. A slurry feed is supplied including abrasive particles to a surface to be machined by the tool tip. A vibration amplitude of the tool tip is controlled by sensing load on the tool and communicating with a computing device. The computing device controls the vibration amplitude of the tool tip. The computing device is provided with at least one memory programmed with historic data, and is operable to modify the vibration amplitude signal being sent to the tool, and comparing resulting load levels due to the change in vibration amplitude signals, and storing the change in vibration amplitude signals at the memory.

Abstract: A water environment temperature measurement tool includes measurement boxes and a counterweight box; a plurality of groups of the measurement boxes are provided; the counterweight box is movably connected with a group of measurement boxes; and each measurement box is provided with a temperature measurement instrument inside. The water environment temperature measurement tool further comprises: control mechanisms, each comprising a water inlet pipe, a water retaining member, an elastic member, a control assembly, a rotating seat, a rotating shaft, a second screw rod, a control seat and a rotary assembly. In the water environment temperature measurement tool of the present invention, the control mechanisms can achieve extraction and temperature measurement of water at different water body depths by cooperating with the measurement boxes and the temperature measurement instruments.

Abstract: The present application discloses a power distribution and monitoring integrated access door, comprising: a first door box side cabinet for supplying power to a cabinet, first and second compartments for power distribution being provided in the first door box side cabinet; a door lintel fixedly connected to the first door box side cabinet; and a door system used for isolating cold and hot channels and mounted below the door lintel and disposed on one side of the first door box side cabinet. In the present disclosure, by using the access door of a closed channel as a carrier, power distribution, monitoring, illumination control, access control and fire control are integrated together. Therefore, the power distribution and monitoring integrated access door of the present disclosure has the functions of power distribution, monitoring, illumination control, access control, and fire control in addition to the isolation of the hot and cold channels.

Abstract: A bus power distribution micromodule, including a UPS; a channel door containing a bus starting end A; and at least one cabinet containing a bus section A1 or A2, wherein an input end of the bus starting end A is connected to the UPS, an output end thereof is connected to the bus section A1 or A2 by means of a connector, and the bus section A1 or A2 is disposed in the cabinet and connected to a power distribution apparatus of the cabinet. In the bus power distribution micromodule, a plug-and-play property, easy expansion and IT load flexible matching of the cabinet are realized; the bus starting end is integrated in the channel door of the micromodule, thereby facilitating convenient maintenance and operation; the beneficial effect of having a small, occupied area is achieved; and, moreover, the bus power distribution micromodule has the advantage of rapid delivery.

Abstract: A water environment temperature measurement tool includes measurement boxes and a counterweight box; a plurality of groups of the measurement boxes are provided; the counterweight box is movably connected with a group of measurement boxes; and each measurement box is provided with a temperature measurement instrument inside. The water environment temperature measurement tool further comprises: control mechanisms, each comprising a water inlet pipe, a water retaining member, an elastic member, a control assembly, a rotating seat, a rotating shaft, a second screw rod, a control seat and a rotary assembly. In the water environment temperature measurement tool of the present invention, the control mechanisms can achieve extraction and temperature measurement of water at different water body depths by cooperating with the measurement boxes and the temperature measurement instruments.

Abstract: An airfoil includes an airfoil wall that has a span between first and second radial ends and that defines leading and trailing edges, pressure and suction sides each joining the leading and trailing edges, and an internal cavity. The internal cavity is divided into at least first and second sub-cavities extending over the span. The first sub-cavity defines a venturi tube.

Abstract: The peripheral vascular stent comprises scaffolding holding units and a membrane, each scaffolding holding units is formed of a closed ring shape wire; the membrane is covered on scaffolding holding units, the flexibility of the membrane is greater than that of the scaffolding holding units, between the wires of the same scaffolding holding unit and/or between two adjacent scaffolding holding units is provided a plurality of hollowed-out areas on the membrane, and two adjacent scaffolding holding units are only connected by the membrane beyond the hollowed-out areas. The peripheral vessel stent can meet the mechanical performance requirements, has a proper radial support force and good flexibility, and can well reduce the in-stent chronic external expansion force, has the advantages of little impact on blood flow, little injury to the vascular wall, and less likely to cause secondary thrombosis.

Abstract: An electronic device at a base station end includes a processing circuit, the processing circuit being configured to: configure, in response to request signalling from a user equipment, an aperiodic beam-forming reference signal relevant to a first beam group for the user equipment, wherein the first beam group is determined by a base station according to channel state information periodically fed back by the user equipment; generate downlink control information, so as to indicate that the user equipment feeds back beam selection information according to the aperiodic beam-forming reference signal; determine, according to the beam selection information, one or a plurality of candidate beams and one or a plurality of corresponding second pre-coding codebooks; and determine an effective pre-coding codebook based on the one or multiple second pre-coding codebooks.

Abstract: A targeted gamified ecommerce service is provided. The service interacts with a mobile application (app) of a consumer operated device and transaction systems and loyalty system of retailers. The consumer interacts with the app to search for a desired good/service, which the consumer is interested in purchasing. The service locates retailers providing the good/service and obtains pricing and offers from the retailers through interaction with the transaction system and loyalty systems. The offers are gamified within the mobile application by the service, and one is selected by the consumer. Once selected, the consumer is unable to access any other offers for the goods and services via the app until the consumer redeems the selected offer or until a given amount of elapsed time has passed. Redemption is tracked and the consumer is rewarded with game-based artifacts/points and the searching feature of the app reactivated before the elapsed time passes.

Abstract: Disclosed is a method for preparing supramolecular cell-based carrier, which relates to the technical fields of supramolecular chemistry, supramolecular materials and cell preparations. Host-guest interactions mediated supramolecular cell-based carriers can achieve targeted delivery based on cell physiological functions, and have high biocompatibility, physiological barrier permeability, and targeting delivery efficiency. It does not require covalent bond modification on the cell surface, and has no effect on the physiological functions of transporting cells. The preparation method of supramolecular cell-based carrier provided by the present application has the advantages of simple and fast construction process, mild conditions and universal applicability, and the method has bio-orthogonality. In addition, a drug loading system is also provided, which can realize drug loading for targeted therapy.