Abstract: Disclosed are a device and a method for nitrogen and phosphorus removal from aquaculture tail water based on agricultural waste filler, and belongs to the technical field of aquaculture tail water treatment. The device includes a device main body, and a reaction part is arranged in the device main body; a bottom end of the device main body is communicated with an aquaculture tail water storage pool, and a top side wall of the device main body is communicated with an effluent collection pool; and the reaction part comprises agricultural waste filler and denitrifying sludge contained in the device main body, and the agricultural waste filler and the denitrifying sludge are soaked in the aquaculture tail water.

Abstract: Provided in the present application is a holographic display system, comprising an on-site holographic display system, a transmissive geometric holographic display system, a geometric holographic display system with folded optical path, and a reflective geometric holographic display system. A display element capable of directly displaying screens provided with depth of field information is used to project a diverging 3D image in the air without the aid of another reference light source. The image is converted by a projection screen of an equivalent negative refractive index flat lens to then obtain an observable 3D image suspended in the air, which reduces costs. At the same time, the 3D image may be displayed in front of or behind the projection screen, the display space is infinite, and in a very small device space, a super large screen and super deep depth of field may also be displayed.

Abstract: This application discloses a battery cushion and a forming method thereof, and a battery module and a forming method thereof. The battery cushion includes a body and breakable bubbles. The breakable bubbles are disposed in the body. The breakable bubbles include at least a first bubble and a second bubble. A breaking pressure of the first bubble is less than a breaking pressure of the second bubble, so that the battery cushion can release a space occupied by the battery cushion in a progressive manner under different external forces. The battery cushion disclosed in this application can not only achieve a pre-tightening force required during assembly of the battery module but also effectively relieve an expansive force generated during working of the battery module.

Abstract: Provided is a secondary battery, comprising an electrode assembly, a packaging bag, and electrode leads. The electrode assembly is accommodated in the packaging bag and comprises a first electrode member, a second electrode member and a separator. The separator separates the first electrode member from the second electrode member. The first electrode member comprises an insulating substrate, a conductive layer, an active material layer and a conductive structure. The conductive layer is provided on the surface of the insulating substrate, and the conductive layer is provided with a first portion and a second portion. The first portion is coated with the active material layer. The second portion is not coated with the active material layer. The conductive structure is welded to the second portion to form a first welding area. The electrode leads are connected to the conductive structure and extend to the outside of the packaging bag.

Abstract: Provided are a secondary battery which includes a positive electrode sheet, a negative electrode sheet, and a separator placed between the positive electrode sheet and the negative electrode sheet. In some embodiments, the positive electrode sheet includes a positive electrode current collector and positive film layers A1 and B1 respectively provided on two surfaces of the positive electrode current collector, and the negative electrode sheet includes a negative electrode current collector and negative film layers respectively provided on two surfaces of the negative electrode current collector, where capacities per unit area Cap A1 and Cap B1 of the positive film layers A1 and B1 satisfy Cap A1<Cap B1, and the negative electrode current collector of the negative electrode sheet is provided with at least one through hole.

Abstract: This application discloses a secondary battery and a device containing the secondary battery. A positive active material of the secondary battery includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a modified material thereof. A negative active material of the secondary battery includes a silicon-oxygen compound and graphite. A separator of the secondary battery includes a substrate and a coating layer. The secondary battery satisfies: 7.5 ? 3 ? 4 ? 6 ? 0 E ? D - ? ( D ? 50 - D C ? 50 × 0.75 - T 18 ) ? 11.5 , where ED?270 Wh/Kg, 11 ?m?D50?18.5 ?m, 11 ?m?DC50?20 ?m. The secondary battery according to this application achieves relatively high cycle performance while achieving a relatively high energy density concurrently.

Abstract: A charging control method for a battery pack at least including two batteries connected in parallel. The method includes determining, based on a charging parameter, states of charge (SOCs) corresponding respectively to the batteries after a preset charging time, calculating, according to the SOCs, an amount of transferred charge between the batteries during the preset charging time, judging whether a charge-receiving battery is in a critical overcharge state according to the amount of transferred charge, and, in response to the charge-receiving battery being in the critical overcharge state, stopping charging the battery pack after the preset charging time.

Abstract: This application discloses a secondary battery and a device containing the secondary battery. A positive active material of the secondary battery includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a modified material thereof. A negative active material of the secondary battery includes a silicon-oxygen compound and graphite. A separator of the secondary battery includes a substrate and a coating layer. The secondary battery satisfies: 7.5 ? 3460 ED - ( D ? 50 - D C ? 50 × 0.75 - T 18 ) ? 11.5 , where ED?270 Wh/Kg, 11 ?m?D50?18.5 ?m, 11 ?m?DC50?20 ?m. The secondary battery according to this application achieves relatively high cycle performance while achieving a relatively high energy density concurrently.

Abstract: Provided in the present application is a holographic display system, comprising an on-site holographic display system, a transmissive geometric holographic display system, a geometric holographic display system with folded optical path, and a reflective geometric holographic display system. A display element capable of directly displaying screens provided with depth of field information is used to project a diverging 3D image in the air without the aid of another reference light source. The image is converted by a projection screen of an equivalent negative refractive index flat lens to then obtain an observable 3D image suspended in the air, which reduces costs. At the same time, the 3D image may be displayed in front of or behind the projection screen, the display space is infinite, and in a very small device space, a super large screen and super deep depth of field may also be displayed.

Abstract: The present application provide a secondary battery and an apparatus containing the secondary battery.

Abstract: A method for generating a user interest profile includes: generating at least one keyword by extracting information from input information of a user; generating interest tags corresponding to the at least one keyword by matching the at least one keyword with tags corresponding to nodes of a knowledge graph; sorting the interest tags corresponding to the at least one keyword; and generating a user interest profile based on the sorted interest tags corresponding to the at least one keyword.

Abstract: The present application provide a secondary battery and an apparatus containing the secondary battery.

Abstract: This application discloses a secondary battery and a device containing the secondary battery. A positive active material of the secondary battery includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a modified material thereof. A negative active material of the secondary battery includes a silicon-oxygen compound and graphite. A separator of the secondary battery includes a substrate and a coating layer. The secondary battery satisfies: 7.5 ? 3460 ED - ( D ? ? 50 - D C ? 50 × 0.75 - T 18 ) ? 11.5 , where ED?270 Wh/Kg, 11 ?m?D50?18.5 ?m, 11 ?m?DC50?20 ?m. The secondary battery according to this application achieves relatively high cycle performance while achieving a relatively high energy density concurrently.

Abstract: The present disclosure relates to a fiber optic closure which comprises a tray, a fiber optic adapter arranged on the tray, an output fiber optic connector and an input fiber optic connector inserted into both sides of the fiber optic adapter, and a fiber optic management device configured to accommodate an overlength portion of an output fiber optic connected to the output fiber optic connector. The fiber optic management device comprises a closure fixing part and a fiber optic storage which are mutually connected, the closure fixing part being provided for fixing the fiber optic storage into the fiber optic closure and the fiber optic storage being provided for accommodating the overlength portion of the output fiber optic. The present fiber optic management device can individually store the overlength portion of each of the internal optical fibers, thereby preventing the problem of stacking and entanglement of a plurality of internal optical fibers.

Abstract: The present application relates to a secondary battery and a battery module, a battery pack and an apparatus containing the secondary battery. In particular, the secondary battery includes a positive electrode plate, a negative electrode plate, a separator and an electrolyte, characterized in that: the secondary battery satisfies the following formula I: 2?|(AF/AE?1)/(CE/CF?1)|?7 (Formula I).

Abstract: This application discloses a submarine cable fault determining method and apparatus for realizing detecting whether a fault occurs to a submarine cable, without depending on TTE. The submarine cable fault determining method includes: receiving, by a network management system, first detection information from a first device during a first preset time, and receiving second detection information from a second device during a second preset time, where the second detection information is used to indicate whether the second device receives a first heartbeat signal from the first device through a submarine cable, and the first detection information is used to indicate whether the first device receives a second heartbeat signal from the second device through the submarine cable; and determining, by the network management system based on the first detection information and the second detection information, whether a fault occurs to the submarine cable between the first device and the second device.

Abstract: Provided is a secondary battery, comprising an electrode assembly, a packaging bag, and electrode leads. The electrode assembly is accommodated in the packaging bag and comprises a first electrode member, a second electrode member and a separator. The separator separates the first electrode member from the second electrode member. The first electrode member comprises an insulating substrate, a conductive layer, an active material layer and a conductive structure. The conductive layer is provided on the surface of the insulating substrate, and the conductive layer is provided with a first portion and a second portion. The first portion is coated with the active material layer. The second portion is not coated with the active material layer. The conductive structure is welded to the second portion to form a first welding area. The electrode leads are connected to the conductive structure and extend to the outside of the packaging bag.

Abstract: The present disclosure relates to a fiber optic closure which comprises a tray, a fiber optic adapter arranged on the tray, an output fiber optic connector and an input fiber optic connector inserted into both sides of the fiber optic adapter, and a fiber optic management device configured to accommodate an overlength portion of an output fiber optic connected to the output fiber optic connector. The fiber optic management device comprises a closure fixing part and a fiber optic storage which are mutually connected, the closure fixing part being provided for fixing the fiber optic storage into the fiber optic closure and the fiber optic storage being provided for accommodating the overlength portion of the output fiber optic. The present fiber optic management device can individually store the overlength portion of each of the internal optical fibers, thereby preventing the problem of stacking and entanglement of a plurality of internal optical fibers.

Abstract: This application discloses a submarine cable fault determining method and apparatus for realizing detecting whether a fault occurs to a submarine cable, without depending on TTE. The submarine cable fault determining method includes: receiving, by a network management system, first detection information from a first device during a first preset time, and receiving second detection information from a second device during a second preset time, where the second detection information is used to indicate whether the second device receives a first heartbeat signal from the first device through a submarine cable, and the first detection information is used to indicate whether the first device receives a second heartbeat signal from the second device through the submarine cable; and determining, by the network management system based on the first detection information and the second detection information, whether a fault occurs to the submarine cable between the first device and the second device.

Abstract: The present disclosure relates to a fiber optic closure which comprises a tray, a fiber optic adapter arranged on the tray, an output fiber optic connector and an input fiber optic connector inserted into both sides of the fiber optic adapter, and a fiber optic management device configured to accommodate an overlength portion of an output fiber optic connected to the output fiber optic connector. The fiber optic management device comprises a closure fixing part and a fiber optic storage which are mutually connected, the closure fixing part being provided for fixing the fiber optic storage into the fiber optic closure and the fiber optic storage being provided for accommodating the overlength portion of the output fiber optic. The present fiber optic management device can individually store the overlength portion of each of the internal optical fibers, thereby preventing the problem of stacking and entanglement of a plurality of internal optical fibers.