Abstract: The present invention discloses a rare-earth-manganese/cerium-zirconium-based composite compound, a method for preparing the same, and a use thereof. The composite compound is of a core-shell structure with a general formula expressed as: A REcBaOb-(1-A)CexZr(1-x-y)MyO2-z, wherein 0.1?A?0.3, preferably 0.1?A?0.2; a shell layer has a main component of rare-earth manganese oxide with a general formula of REcMnaOb, wherein RE is a rare-earth element or a combination of more than one rare-earth elements, and B is Mn or a combination of Mn and a transition metal element, 1?a?8, 2?b?18, and 0.25?c?4; and a core has a main component of cerium-zirconium composite oxide with a general formula of CexZr(1-x-y)MyO2-z, wherein M is one or more non-cerium rare-earth elements, 0.1?x?0.9, 0?y?0.3, and 0.01?z?0.3. The composite compound enhances an oxygen storage capacity of a cerium-zirconium material through an interface effect, thereby increasing a conversion rate of a nitrogen oxide.

Abstract: This disclosure relates to a liquid cooling assembly that includes a base, a cover, a first connector, and a second connector. The cover is disposed on the base. The cover and the base together form an accommodation space therebetween. The cover has an inlet and an outlet respectively located at two opposite sides of the cover in a direction parallel to a longitudinal direction of the cover. The first connector is disposed to the inlet of the cover. The second connector is disposed to the outlet of the cover.

Abstract: An RF filter comprising a resonator element and a polymer composition is provided. The polymer composition contains an aromatic polymer and has a melting temperature of about 240° C. or more. The polymer composition exhibits a dielectric constant of about 5 or less and dissipation factor of about 0.05 or less at a frequency of 10 GHz.

Abstract: Provided are a winding mandrel, a winding machine, and a battery cell winding method. The winding mandrel includes a first connecting member and a second connecting member configured to be combined with the first connecting member. The second connecting member and the first connecting member are arranged coaxially, and length of the combined first connecting member and second connecting member is greater than length of the first connecting member or the second connecting member. Changing a structure of a winding mandrel improves stiffness of the winding mandrel and improves the efficiency and quality of a winding operation.

Abstract: An embedded magnet frame, an integrated structure and a manufacturing method are disclosed. The manufacturing method includes: manufacturing conductive metal columns, a first sacrificial block and a second sacrificial block on a surface of a bearing plate; laminating a first dielectric layer on the surface of the bearing plate so that the first dielectric layer covers the conductive metal columns, the first sacrificial block and the second sacrificial block; thinning the first dielectric layer to expose surfaces of the conductive metal columns, the first sacrificial block and the second sacrificial block; etching the first sacrificial block and the second sacrificial block to form corresponding first and second mounting cavities, the second mounting cavity being used for mounting a chip; filling the first mounting cavity with magnetic slurry to form an embedded magnet; and removing the bearing plate to form an embedded magnet frame.

Abstract: A smoothly switching negative pressure liquid cooling system is provided in the present application, wherein a gas extraction pipeline of a gas circuit is used to extract gas to form a negative pressure environment, a gas supply pipeline is used to supply the gas to form a positive pressure environment. One of the three gas-liquid chambers is used for feeding the liquid and one of the three gas-liquid chambers is used for discharging the liquid to form a coolant circulation. The other chamber maintains a negative pressure environment. At the moment of switching a working state, the chamber that maintains the negative pressure environment forms a large pressure difference, so that the coolant enters the chamber quickly. Before the working state is switched, enough negative pressure has been formed to ensure the fluidity of the coolant at the moment of switching the working state.

Abstract: A method of performing authentication and authorization in Proximity based Service (ProSe) communication by a requesting device which sends a request of a communication and a receiving device which receives the request from the requesting device, the method including deriving session keys Kpc and Kpi from an unique key Kp at the requesting and receiving devices, using the session keys Kpc and Kpi for ProSe communication setup and direct communication between the requesting and receiving devices, starting the direct communication with the requesting and receiving devices. The key Kpc is confidentiality key and the key Kpi is integrity protection key.

Abstract: A battery cell includes a housing having an opening, an end cap assembly for closing the opening and including an end cap body and an electrode terminal connected to the end cap body in an insulating manner, and an electrode assembly arranged in the housing and being of a wound structure and including: a wound main body, a first tab and a second tab, the first tab and the second tab having opposite polarities and being connected to the same side of the wound main body along a winding axis of the wound structure. The first tab is electrically connected to the electrode terminal, and the second tab is electrically connected to the end cap body.

Abstract: Embodiments of this application relate to the field of electrode assembly winding technologies and specifically to a winding device and a winding method. The device includes: a winding mandrel configured to wind a roll material, where the winding mandrel includes a magnetic portion, the magnetic portion being disposed along an axial direction of the winding mandrel; and a magnetism supply assembly configured to provide a magnetic field, where the magnetism supply assembly is disposed in correspondence with the magnetic portion, and the magnetic field interacts with the magnetic portion to generate a magnetic force so as to resist deformation of the winding mandrel. The winding device decreases the deformation of the winding mandrel and reduces the risk of displacement or wrinkles of electrode assemblies during winding.

Abstract: Techniques manage log data. Such techniques involve receiving log data describing a state of an application system at a target time point. Such techniques further involve determining whether a level of the log data satisfies a predetermined level. Such techniques further involve, in response to determining that the level of the log data satisfies the predetermined level, storing log data within a predetermined range adjacent to the target time point to a log repository of the application system, the predetermined range indicating the amount of log data expected to be stored.

Abstract: A UE (10) provides information on potential S?eNB(s). The information is forwarded from an MeNB (20_1) to an M?eNB (20_2) such that the M?eNB (20_2) can determine, before the handover happens, whether the M?eNB (20_2) will configure a new SeNB (S?eNB) and which S?eNB the M?eNB (20_2) will configure. In one of options, the MeNB (20_1) derives a key S?-KeNB for communication protection between the UE (10) and the S?eNB (30_1), and send the S?-KeNB to the M?eNB (20_2). In another option, the M?eNB (20_2) derives the S?-KeNB from a key KeNB* received from the MeNB (20_1). The M?eNB (20_2) sends the S?-KeNB to the S?eNB (30_1). Moreover, there are also provided several variations to perform SeNB Release, SeNB Addition, Bearer Modification and the like, in which the order and/or timing thereof can be different during the handover procedure.

Abstract: The invention discloses a fluxgate chip packaging structure thereof. The fluxgate chip packaging structure comprises a fluxgate bare chip, a conductive pin, and a packaging layer wrapping the fluxgate bare chip and a pin tail of the conductive pin; and the fluxgate bare chip is electrically connected to the pin tail. Based on the fluxgate bare chip, the fluxgate chip packaging structure forms a universal chip which can be applied to a fluxgate current sensor; during use, the fluxgate bare chip can be quickly connected to the fluxgate current sensor through the conductive pin, and the fluxgate chip packaging structure can be matched with the internal structure of existing fluxgate current sensors to realize magnetic field detection of sensors; and the fluxgate chip packaging structure can completely replace traditional enameled wire probes, thus greatly reducing the probe size.

Abstract: A random access method includes: when initiating random access, determining a measurement result of channel state information measurement reference signals (CSI-RS) of a plurality of beams; determining a target beam corresponding to a target CSI-RS having a measurement result greater than a preset threshold value; determining a target Synchronization Signal Block (SSB) corresponding to the target CSI-RS; determining a random access preamble and random access timing associated with the target SSB; and initiating random access on the target beam based on the random access preamble and the random access timing. A beam can be determined according to the measurement result of an CSI-RS, without determining the beam according to the measurement result of an SSB, thereby preventing the problem of user equipment (UE) being unable to select a suitable beam for random access due to a measurement result of an SSB not being obtained for a downlink BWP by UE.

Abstract: Provided are a parameter estimation model training method and apparatus, and a device and a storage medium. The parameter estimation model training method comprises: inputting each training sample in a facial image training set into a pre-constructed neural network model, estimating reconstruction parameters specified by 3D facial reconstruction, and inputting the reconstruction parameters into a pre-constructed 3D morphable model, so as to reconstruct a 3D face corresponding to the training sample; calculating a plurality of loss functions, under a plurality of pieces of 2D supervision information, between the 3D face and the training sample, and adjusting a weight corresponding to each loss function; and generating a fitting loss function on the basis of each loss function and the weight corresponding to each loss function, and performing inverse correction on the neural network model by using the fitting loss function, so as to obtain a trained parameter estimation model.

Abstract: A polymer composition containing a polyoxymethylene polymer having low shrinkage characteristics and/or an expanded processing window is disclosed. The polymer composition is particularly well suited for use in three-dimensional printing systems, such as printers that use filament fusion technology. The polymer composition, for instance, can be a feed material in the form of a filament or polymeric pellets. The feed material can be placed in a printer cartridge for insertion into a three-dimensional printing system. In accordance with the present disclosure, a polyoxymethylene polymer is combined with one or more dimensional stabilizing agents for dramatically improving the processing characteristics of the polymer.

Abstract: Provided are a winding shaft, a cell manufacturing apparatus, and a cell manufacturing method. The winding shaft is used for winding plates and includes: a winding shaft body including a first winding surface; an adjustment member configured to be mounted to the winding shaft body and movable simultaneously in an axial direction of the winding shaft and in a radial direction of the winding shaft, where the adjustment member includes a second winding surface, and the first winding surface and the second winding surface are configured to wind the plates jointly; and an actuator configured to drive the adjustment member to move to change a relative position of the second winding surface with respect to the first winding surface, so as to change a winding circumference of the winding shaft. The winding shaft of the present application can reduce the possibility of or the amount of misalignment between the tabs.

Abstract: A structure self-adjusting type vehicle-mounted magnetic suspension flywheel battery coping with multiple operation modes and an operating method thereof are provided. An ant-nest type channel is formed in a radiator of the flywheel battery along a circumferential direction, and a plurality of counterweight magnetic adsorption devices are symmetrically embedded in a flywheel lower sphere. When the flywheel battery operates in a charging mode, a standby mode or a discharging mode, the operation mode of the motor is flexibly changed according to different recovered energy levels or output energy levels, and the loss in the magnetic bearing system is reduced through matching of different types of magnetic bearings according to different disturbance levels. The low-loss, high-safety and stable operation of the vehicle-mounted magnetic suspension flywheel battery in various operation modes can be realized.

Abstract: In the present disclosure, a temperature-sensitive inner layer solution, a deformation intermediate layer solution, and a rigid outer layer solution are first prepared and spray-coated layer by layer on a surface of a fruit or vegetable, such that three preservative film layers are produced successively and can be used for the preservation of the fruit or vegetable.

Abstract: An aluminum alloy metro vehicle body section bar capable of matching and combining includes a roof section bar, an upper edge beam section bar, a side wall section bar, a lower edge beam section bar and a floor section bar, wherein the roof section bar comprises roof edge section bars of two widths; the upper edge beam section bar comprises an upper edge beam of a drum-shaped vehicle and an upper edge beam 4b of the trapezoidal vehicle; the side wall section bar comprises a side wall middle section bar of the drum-shaped vehicle and a side wall middle section bar of the trapezoidal vehicle; the lower edge beam section bar comprises a lower edge beam of the drum-shaped vehicle and a lower edge beam of the trapezoidal vehicle; and the floor section bar comprises underframe edge section bars of two widths.

Abstract: An electrode assembly includes: a first electrode plate layer, a first separator, a second electrode plate layer and a second separator. A winding start end of the first electrode plate layer, a winding start end of the first separator, and a winding start end of the second separator are substantially aligned with one another. The first electrode plate layer includes a first insulating section and a first electrode plate connected to each other, and the end of the first insulating section away from the first electrode plate is the winding start end of the first electrode plate layer. Along a winding direction of the electrode assembly, the winding start end of the second electrode plate layer is substantially aligned with the winding start end of the first electrode plate layer, or is located downstream of the winding start end of the first electrode plate layer.