Abstract: An exhaust assembly, a frame assembly, a cushion assembly and a patient interface device are provided. The patient interface device includes: a cushion assembly including a nasal cushion to be in contact with a face of a patient, the nasal cushion is configured to be adaptively fitted around nostrils of the patient in response to the patient interface device being worn by the patient, and the nasal cushion is configured to, when being pressed against the basis nasi of the patient due to a pressurized gas to seal, apply no clamping effect on the ala nasi of the patient; a frame assembly with two sides being connected to the nasal cushion and a vent pipe, respectively; and a head strap connected to the frame, the head strap is configured to be fixed around the head of the patient in response to the patient interface device being worn by the patient.

Abstract: An exhaust assembly, a ventilation assembly, a frame assembly and a mask system. When the mask system is worn, the nostrils and the mouth of a user are respectively covered by means of a nose structural body and a mouth structural body, which can meet the requirement of mouth breathing and thus has the advantage of good clinical blood gas parameters. Since the mask system seals around the nostrils of the user and thus avoids pressing the bridge of nose or two sides of the wing of nose of the user, the mask system has a smaller and lighter structure and better visibility, and thus has improved comfort. Compared with a full-face mask, the nasal mask is not prone to feeling claustrophobic and has better compatibility for people. The mask system can improve the treatment effect and treatment compliance.

Abstract: A wind turbine planet gear shaft has a shaft body with an outer surface, a segment of the outer surface being a slide bearing surface configured to form a radial slide bearing with an inner opening of a planet gear. The slide bearing surface has a first portion configured as a non-load-bearing zone and a second portion configured as a load-bearing zone and exactly one axially elongate oil pocket in the slide bearing surface, that oil pocket being located in the non-load-bearing zone. An oil supply channel in the shaft body has a first end in communication with the oil pocket, and first and second oil return channels in the slide bearing surface each have a first end at a longitudinal end of the oil pocket and a second end open to ambient air.

Abstract: An oronasal cushion includes a nasal structure and an oral structure that are connected to each other. A penetrating cavity is formed inside the nasal structure and the oral structure. The cavity can receive pressurized gas. The nasal structure fits around a wearer's nostrils to seal. The oral structure fits around the wearer's mouth to seal. The nasal structure is configured to not pinched against the wearer's nose when sealed against the wearer's nose base by means of pressurized gas. The oral structure is configured to accommodate and fit around the wearer's mouth in response to the oronasal cushion being put on by the wearer. The oral structure includes an oral soft pad in contact with the wearer's face and a reinforcing structure connected to the oral soft pad.

Abstract: The invention provides a roadside computing system (RCS), or an edge computing system, for an autonomous vehicle. The RCS comprises a hierarchy of roadside unit (RSU) and an onboard unit (OBU) in an individual vehicle. The RSU comprises a data processing module and a communication module, and is capable of generating guidance information and targeted instructions for individual vehicle. The data processing module of the RSU comprises two processors: an External Object Calculating Module (EOCM) and an AI processing unit. Thus, the RCS utilizes roadside edge computing power and AI models to support autonomous driving for the vehicle. The OBU comprises a data processing module, a communication module, and a vehicle control module, and is capable of generating vehicle-specific targeted instruction for the vehicle based on guidance information and targeted instructions received from RSUs, and controlling the vehicle based on vehicle-specific targeted instruction.

Abstract: A fire protection device includes a housing, a valve body, a torsion spring, and a meltable member, a fluid passage is provided in the housing, the fluid passage is provided with a first opening and a second opening, the first opening and the second opening are used for connecting with a pipeline of an oxygen therapy instrument or a patient end, respectively; the valve body is located in the fluid passage and is rotatably connected to the housing; the valve body is provided with an accommodating cavity, and the fluid passage and the accommodating cavity are two spaces independent from each other; the torsion spring is embedded in the accommodating cavity so as to drive the relative rotation of the valve body and the housing; and the meltable member is disposed on an inner wall of the fluid passage.

Abstract: Provided are a display panel and a display terminal. The display panel includes a display region and a non-display region surrounding the display region. The display panel includes a cathode signal trace and a cathode layer, the cathode signal trace includes a first trace part, and the first trace part is located in the display region, the cathode layer is located at one side of the cathode signal trace, covers the display region, and is electrically connected to the first trace part.

Abstract: This invention presents an ocean observation platform with an integrated, highly reliable wave energy generation mechanism, relevant to power supply technology in marine environments. It includes a platform floating body and a power generation mechanism located at the platform's bottom. The mechanism features disassemblable power generation piles, arranged in a circular array on the floating body. This design ensures that if one pile fails, the others continue generating electricity, enabling a long-term, stable, and continuous power supply. This is particularly useful for monitoring meteorological, temperature, salinity, and ocean current data in complex marine conditions.

Abstract: The present disclosure provides an annular anchor recycling instrument and an annular anchor recycling method, relating to the technical field of ocean engineering. The annular anchor recycling instrument includes a recycling tube, a pump body assembly, a lifting portion and an installation portion. One end of the recycling tube is provided with a cover body, and the other end of the recycling tube is configured to be an open end for cooperating with the top of the annular anchor. The pump body assembly is arranged on the cover body, and used to boost pressure to the interior of the recycling tube. The lifting portion is arranged on the cover body, and used to connect with a hoist. The installation portion are arranged on the cover body, and used to connect with the anchor chain on the annular anchor.

Abstract: A computing system may include a design access engine configured to access an injection mold design and a channel construction engine configured to construct conformal cooling channels for the injection mold design. The channel construction engine may do so by extracting a cooling surface of the injection mold design, generating a central offset surface with a same shape as the cooling surface, projecting cooling lines on to the central offset surface, detecting sharp portions of the projected cooling lines, smoothing the detected sharp portions of the projected cooling lines, and generating the conformal cooling channels using the smoothed cooling lines along the central offset surface as a center line for the conformal cooling channels.

Abstract: A dispatching method for an electric-hydrogen energy system considering flexible hydrogen demand includes establishing an electric load flexibility equation, a power purchase and sale constraint equation, a renewable energy output constraint equation, a hydrogen load flexibility equation, an electricity-to-hydrogen production safety operation constraint equation and an electric power balance constraint equation, establishing an electric-hydrogen energy system dispatching model with the lowest operating cost of the electric-hydrogen energy system within the dispatching cycle as an objective function, and solving the electric-hydrogen energy system dispatching model to obtain an optimal dispatching result. As compared with the prior art, the present invention can effectively solve the problem of coordination between electric and hydrogen energy flows, while taking into account the flexibility of electric and hydrogen loads, further providing additional flexibility to the operation of the system.

Abstract: AC-DC-AC converter for delivering power to an electric motor from a power source is presented. The AC-DC-AC converter comprises a front-end converter and a motor-end converter connected through a DC link, the DC link voltage being generated and controlled by the front-end converter.

Abstract: AC-DC-AC converter for delivering power to an electric motor from a power source is presented. The AC-DC-AC converter comprises a front-end converter and a motor-end converter connected through a DC link, the DC link voltage being generated and controlled by the front-end converter.

Abstract: A power supply system for arc furnace is described. The power supply system includes a power converter intended to be connected to a polyphase supply grid and a polyphase transformer comprising a primary circuit connected to the power converter and a secondary circuit intended to be connected to at least one electrode of the arc furnace. The power converter includes an input device, a link circuit that has a first bus and a second bus, and an output device. The power supply system further includes a command circuit configured to command the input device and the output device to supply the electrode and to stabilize the courant and the voltage delivered by the grid when the electrode of the arc furnace is supplied by the power supply system to reduce rejections in the grid.

Abstract: A driving method of a display panel and a display apparatus provided by embodiments of the present disclosure include: when a display mode switching startup instruction is received, a non-counting state is entered. The display panel is driven to display a first set picture, and a current display mode is switched to a target display mode. When a data mode switching completing instruction is received, a counting state is entered.

Abstract: Provided is a signal driving system with a constant slew. The signal driving system with the constant slew includes: a step voltage generation unit configured to provide multiplex arithmetic gradient voltage signals; a multiplexer, wherein an input end of the multiplexer is connected to the step voltage generation unit to receive the multiplex arithmetic gradient voltage signals, and another input end of the multiplexer is connected to a control signal generation unit, and the multiplexer is configured to selectively output the multiplex arithmetic gradient voltage signals under a control of a control signal generated by the control signal generation unit; a voltage following unit connected to the multiplexer, wherein the voltage following unit is configured to serve as an isolation and improve a driving ability; and an output following unit connected to the voltage following unit, wherein the output following unit is configured to drive a subsequently-connected load unit.

Abstract: A camera assembly is provided. The camera assembly includes an auxiliary mount, a rotatable camera module and a flexible heat conducting assembly, the rotatable camera module includes a rotatable mount and a camera function group disposed on the rotatable mount, the rotatable mount is rotatably connected to the auxiliary mount, the flexible heat conducting assembly is fixedly connected to one end of the camera function group, and the flexible heat conducting assembly is further configured to be connected to a non-rotatable camera module component, so that heat generated by the camera function group is transferred to the non-rotatable camera module component. A flexible heat conducting assembly performs a cross-region transfer of heat generated by the rotatable camera module, to help reduce an ambient temperature of the rotatable camera module, so as to improve photography quality of the camera module, and prolong a photography time period of the rotatable camera module.

Abstract: Provided are modular multilevel converter and hybrid modular multilevel converters. Each of the modular multilevel converters and hybrid modular multilevel converters include submodules. Each submodule includes a first half bridge converter, a second half bridge converter, and a dual active bridge converter having a first connection, a second connection, a third connection and a fourth connection. The first half bridge converter is interconnected with the first and second connections via a first capacitor included in the first half bridge and the second half bridge converter is interconnected with the third and fourth connections via a second capacitor included in the second half bridge.

Abstract: Provided is a power converter that includes at least one leg having a first string that includes a plurality of switching units, a plurality of unidirectional current switches, a first connecting node, and a second connecting node, such that the first string is operatively coupled across a first and a second bus, and a second string operatively coupled to the first string via the first connecting node and the second connecting node such that the second string includes a plurality of unidirectional current switches and a fourth connecting node operatively coupled to a fourth bus. The power converter also includes a controller configured to control switching of the plurality of switching units.

Abstract: An audio transducer includes a diaphragm assembly. The diaphragm assembly can include a diaphragm, an attachment portion that circumferentially surrounds the diaphragm, and a flexible surround extending between the diaphragm and the attachment portion. The audio transducer can include a voice coil coupled to the diaphragm where the voice coil has a voice coil lead. The audio transducer can include a carrier that circumferentially surrounds the voice coil. The carrier can include an annular mounting surface, with the attachment portion of the diaphragm assembly being able to attach to the mounting surface, and a channel formed in the mounting surface. The voice coil lead can extend through the channel.