Abstract: A negative electrode active material comprises a carbon-based material and a silicon-based material, wherein a first functional group exists on the surface of the carbon-based material, a second functional group exists on the surface of the silicon-based material, and the first functional group has a charge opposite to that of the second functional group.

Abstract: The present application provides an electrode assembly and a preparation method therefor, a secondary battery, and a power consuming device. A reserved space is formed between at least one surface of a separator and a corresponding electrode plate, and a spacing D of the reserved space tends to increase in a preset direction of the electrode plate from either edge of the separator to a middle of the separator, so that the reserved space is of a structure with a large middle and two small ends. In this way, during cycle of charging and discharging, when the electrode plate expands at a middle part more than at two edges thereof in its own width direction, the electrode plate is better accommodated in the reserved space.

Abstract: A microwave passive sensor includes a microwave receiver, a low noise amplifier coupled to the microwave receiver, a mixer coupled to the low noise amplifier, and a baseband amplifier coupled to the mixer.

Abstract: This application relates to a battery and an electric apparatus. A ratio of a capacity per unit area of a negative electrode of the battery to a capacity per unit area of a positive electrode of the battery is referred to as an NP ratio. The NP ratio of the battery is greater than or equal to 1.105, allowing the negative electrode potential corresponding to an upper limit of SOC of the battery to be higher than potential for crystalline phase formation, without BMS control or forced charging/discharging. This can alleviate or avoid battery memory effects, enabling maximum utilization of the capacity of the battery and improving energy efficiency of the battery.

Abstract: An impeller includes a hub having an axial direction as a rotation axis and extending from a first end to a second end, and including an end surface and a first wall. The end surface is positioned at the first end of the hub, one end of the first wall extends around an entire periphery of the end surface and radially outwardly extends at an angle toward the second end in the axial direction. A length of extension of the first wall is greater than 50% of a length of extension of the hub. The impeller further includes a plurality of blades, the proximal ends of which extend from the periphery of the hub in a radial direction. A predetermined range of angle is formed between the first wall and the axial direction, and the predetermined range of angle is between 3 degrees and 45 degrees.

Abstract: The present disclosure provides a secondary battery and a battery module. The secondary battery includes an electrode assembly, a case and a cap assembly. The case has an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity. The electrode assembly comprises electrode units stacked in an axial direction of the accommodating cavity. The cap assembly comprises a cap plate and a vent piece, the cap plate is connected with the case and positioned at a side of the electrode assembly in the axial direction. The cap plate is provided with a through-hole, and the vent piece covers the through-hole. The cap plate has a first inner surface, the vent piece has a second inner surface, and a distance between the first inner surface and the electrode assembly is larger than a distance between the second inner surface and the electrode assembly.

Abstract: An electrode plate includes a current collector and an active substance layer. A surface of the active substance layer is configured to form a concave surface of a bending layer is depressed inwardly and is provided with multiple buffer spaces, and the multiple buffer spaces are arranged to not penetrate through the current collector.

Abstract: A positive electrode plate has a plurality of corner areas spaced along a first direction. Each corner area forms a first bending layer of an electrode assembly when the positive electrode plate is wound along the first direction. The positive electrode plate includes a current collector and active substance layers arranged on two opposite surfaces of the current collector. The first bending layer is provided with a concave surface, and in at least one of the plurality of corner areas, one or a plurality of aperture(s) is/are arranged on the active substance layers configured to form the concave surface.

Abstract: A device may include memory media configured as cache media; and one or more circuits configured to perform operations including receiving memory access information, performing a mixture model analysis based on the memory access information to produce one or more scores, and updating the memory media based on the one or more scores. The memory media may include determining that at least one of the one or more scores is above a threshold and loading a portion of memory corresponding to the at least one of the one or more scores to the memory media. Updating the memory media may include determining that at least one of the one or more scores is below a threshold and removing a portion of memory corresponding to the at least one of the one or more scores from the memory media.

Abstract: Provided is a cavity ionization chamber for measuring dose rate at a protection level. In the cavity ionization chamber, an ionization chamber sensitive volume includes a high-voltage electrode, and a collecting electrode, and an ionization chamber stem is connected to the ionization chamber sensitive volume and a first TNC interface. The ionization chamber stem is directly connected to an inner wall of the high-voltage electrode through a socket connector and is flush with a tangent plane of a spherical surface formed by the inner wall of the high-voltage electrode at an intersection of a straight line where the ionization chamber stem is located and the spherical surface. The first TNC interface is connected to one end of a guarding electrode through an inner shielding layer of a coax cable double shielded, and the other end of the guarding electrode penetrates into the ionization chamber sensitive volume.

Abstract: A U-shaped e-cigarette peristaltic pump includes: a carrier; a drive assembly; a transmission assembly; and a peristaltic assembly. The drive assembly is arranged on the carrier. The peristaltic assembly and the drive assembly are arranged side by side on a same side of the carrier. A first accommodating space is provided between the drive assembly and the carrier. A second accommodating space is provided between the peristaltic assembly and the carrier. The transmission assembly is respectively in the first accommodating space and the second accommodating space. The drive assembly is connected to the peristaltic assembly through the transmission assembly.

Abstract: An active edge caching method based on community discovery and weighted federated learning for selecting an optimal caching user and developing an optimal caching strategy; user grouping method based on community discovery is first provided, users are divided into different user groups according to users' mobility and social attributes, degrees of importance of different users are computed in each user group, and most important user is selected as a caching node to provide content distribution services; a content popularity prediction framework based on attention weighted federated learning is provided for combining attention weighted federated learning mechanism with deep learning algorithm to predict future user preferences for different content, so as to improve content popularity prediction accuracy and solve user privacy disclosure; finally, hot content is cached on selected caching users according to prediction results, to achieve goals of reducing network transmission latency and network operation cost

Abstract: A complex carbide for mining and mineral processing applications that are subject to severe additional metal, with the additional metal being a transition metal.

Abstract: A fan-shaped air suction spray nozzle automatically adjusting an air suction speed is provided in the present invention, which includes a spray nozzle body and a liquid channel, the spray nozzle body being provided with a liquid channel in communication with a nozzle hole, and further includes a pressure groove and an air intake channel, wherein an inlet section of the liquid channel is in communication with the pressure groove, and the air intake channel is in communication with the liquid channel after penetrating through the pressure groove; an air intake orifice plate is installed in the pressure groove through an elastic damping apparatus, and a change of the pressure at an inlet of the liquid channel causes the air intake orifice plate to move between the pressure groove and the air intake channel; the air intake orifice plate is provided with several through holes of the same or different sizes, which are configured to change the air intake volume in the liquid channel as the air intake orifice plate m

Abstract: Methods, systems, and storage media for generating leads for vendors through a social media program are disclosed. Exemplary implementations may: estimate a conversion rank for an online promotion for a targeted prospect based at least in part on historical data of conversion ranks for a sample of the targeted prospect; simulate the online promotion to the sample of the targeted prospect; calculate a likelihood of conversion based on the simulating of the online promotion to the sample of the targeted prospect; and cause display of the likelihood of conversion as a confidence score.

Abstract: A fan-shaped air suction spray nozzle automatically adjusting an air suction speed is provided in the present invention, which includes a spray nozzle body and a liquid channel, the spray nozzle body being provided with a liquid channel in communication with a nozzle hole, and further includes a pressure groove and an air intake channel, wherein an inlet section of the liquid channel is in communication with the pressure groove, and the air intake channel is in communication with the liquid channel after penetrating through the pressure groove; an air intake orifice plate is installed in the pressure groove through an elastic damping apparatus, and a change of the pressure at an inlet of the liquid channel causes the air intake orifice plate to move between the pressure groove and the air intake channel; the air intake orifice plate is provided with several through holes of the same or different sizes, which are configured to change the air intake volume in the liquid channel as the air intake orifice plate m