Abstract: A faucet with integrated manual and automatic flow control, which includes a faucet body, a valve, a handle, a cold water inlet pipe, a hot water inlet pipe, a water outlet pipe, a sensing unit and a control device. The valve and the control device are both arranged inside the faucet body. The handle is arranged on one side of the faucet body and is connected with one end of the valve, the other end of the valve is connected with the control device. The sensing unit is arranged on the faucet body and is electrically connected with the control device. The cold water inlet pipe and the hot water inlet pipe are both connected to one end of the water outlet pipe through the valve.

Abstract: A composite metal oxide material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack and an electrical device are provided. The composite metal oxide material includes a central core and a coating layer on the surface of the central core, in which the central core material has a chemical formula of Li5FexM1-xO4, 0.6?x?1; the coating layer material has a chemical formula of LiMO2, M is one or more metal elements with +3 valence, and the absolute value of the difference between the +3-valence ion radius of Fe and the +3-valence ion radius of M is ?0.02 nm. The composite metal oxide material of the present disclosure makes the secondary battery have high charge capacity, high discharge capacity and long cycle life.

Abstract: A data retransmission method is provided herein. The method includes sending a data frame to an electronic device and receiving an acknowledgement frame from the electronic device within a transmission opportunity duration, where the acknowledgement frame includes first acknowledgement information; and when the first acknowledgement information indicates that at least a part of data in the data frame needs to be retransmitted and further indicates a retransmission period required to complete the retransmission, retransmitting information related to the at least the part of the data to the electronic device in the retransmission period.

Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.

Abstract: A positive active material, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The positive active material includes a spinel-type lithium-manganese-containing composite oxide with a molecular formula of Li1+xAaMbXcMn2?a?b?c?xO4?t. In the molecular formula: A is a doping element for a manganese site of the spinel-type lithium-manganese-containing composite oxide; M is used for combining with O to form a second phase containing a polyoxyanion, and M includes one or more of B, C, N, Si, P, S, or Cl; X includes one or more of Mg, Al, Si, Ca, Sc, Ti, Cr, Fe, Co, Ni, Cu, Zn, or Zr; and the molecular formula satisfies: ?0.1?x?0.3, 0<a?0.2, 0<b?0.2, 0<c?0.7, and 0?t?0.2.

Abstract: Provided are an electrode active material, a method for preparing the electrode active material, an electrode plate, and a battery. The electrode active material includes carbon-coated metal oxide particles. The metal oxide particles satisfy a formula (2): AcMdOe??(2), where element A is selected from one or more of alkali metal elements or alkaline earth metal elements; element M is selected from one or more of transition metal elements having a relative atomic mass smaller than 65; and c>0, d>0, and e>0.

Abstract: A secondary battery includes a positive electrode sheet having a positive electrode active material and a non-aqueous electrolyte. The positive electrode active material includes a central core material and a modification layer disposed on a surface of the central core material. The modification layer including an orthophosphate with a molecular formula Aa+x[PO4]3?y, where A denotes one or more of Li, Na, K, Rb, Cs, Mg, Ca, Ba, Ni, Fe, Co, Ti, Al, Cr, V, Nb, and W, 1?a?6, and ax=3y. The non-aqueous electrolyte includes a fluorinated phosphate with a molecular formula Bb+m[PO1+cF3-c]c?n, where B denotes one or more of Li, Na, K, Rb, Cs, Mg, Ca, and Ba, 1?b?2, c denotes 1 or 2, and bm=cn.

Abstract: A spinel-type nickel-manganese-lithium-containing composite oxide, a preparation method thereof, and a secondary battery and an electric apparatus containing the same are provided. A body material of the spinel-type nickel-manganese-lithium-containing composite oxide is represented by a general formula LixNiyMnzMmO4Qq, and both element P and one or more elements selected from elements Nb, W, and Sb are doped in the body material, where based on mass of the spinel-type nickel-manganese-lithium-containing composite oxide, doping content k of the element P satisfies 0.48 wt %?k?3.05 wt %, doping content g of the one or more elements selected from the elements Nb, W, and Sb satisfies 0.05 wt %?g?0.31 wt %, and 2?k/g?20. The secondary battery provided in this application has good high-temperature storage performance and high-temperature cycling performance.

Abstract: This application provides a lithium-nickel-manganese-based composite oxide material, where a K value of the lithium-nickel-manganese-based composite oxide material ranges from 1 to 2, and the K value is calculated based on the following formula: K=Dv50/dv50, where dv50 is a volume median crystallite diameter of crystal particles of the lithium-nickel-manganese-based composite oxide material; and Dv50 is a volume median particle diameter of the lithium-nickel-manganese-based composite oxide material.

Abstract: The present application provides a positive electrode active material, a preparation method therefor and the use thereof. The positive electrode active material may comprise a spinel lithium nickel manganese oxide material, wherein the spinel lithium nickel manganese oxide material has the following chemical formula: LiaNi0.5?xMn1.5?yMx+yO4, wherein M is selected from at least one of Mg, Zn, Ti, Zr, W, Nb, Al, B, P, Mo, V, or Cr, 0.9?a?1.1, ?0.2?x?0.2, ?0.02?y?0.3, and x+y?0; the Mn3+ content in the spinel lithium nickel manganese oxide material may be less than or equal to 0.7 wt %.

Abstract: A composite metal oxide material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack and an electrical device are provided. The composite metal oxide material includes a central core and a coating layer on the surface of the central core, in which the central core material has a chemical formula of Li5FexM1-xO4, 0.6?x?1; the coating layer material has a chemical formula of LiMO2, M is one or more metal elements with +3 valence, and the absolute value of the difference between the +3-valence ion radius of Fe and the +3-valence ion radius of M is ?0.02 nm. The composite metal oxide material of the present disclosure makes the secondary battery have high charge capacity, high discharge capacity and long cycle life.

Abstract: A preparation method for the carrier, includes: 1) mixing hydrated alumina with an organic acid to obtain a mixture A; and 2) adding tetraalkylsiloxane to the mixture A, thus obtaining a mixture B; stirring the mixture B in a closed condition; spraying atomized water into the mixture B; and stirring to yield the carrier.

Abstract: A method of hydrolysis of dimethyl succinyl succinate includes: adding DMSS and water to a reactor, and stirring; adding a phase transfer catalyst to the reactor, and heating; and adding an acid and a transition metal salt to the reactor for hydrolysis of DMSS. The acid is sulfuric acid, hydrochloric acid or nitric acid, and the W ion concentration of the mixture in the reactor is 0.2-12 mol/L. The transition metal salt is a nitrate, sulfate, or chloride of copper, nickel, zinc or manganese, or a combination thereof; and the metal ion concentration of the mixture in the reactor is 0.01-0.1 mol/L.

Abstract: A faucet with integrated manual and automatic flow control, which includes a faucet body, a valve, a handle, a cold water inlet pipe, a hot water inlet pipe, a water outlet pipe, a sensing unit and a control device. The valve and the control device are both arranged inside the faucet body. The handle is arranged on one side of the faucet body and is connected with one end of the valve, the other end of the valve is connected with the control device. The sensing unit is arranged on the faucet body and is electrically connected with the control device. The cold water inlet pipe and the hot water inlet pipe are both connected to one end of the water outlet pipe through the valve.

Abstract: A quinoline carboxylate compound of the following formula (I): The compound of formula (I) shows good activity against various bacteria in agricultural field.

Abstract: Methods, systems, and machine-readable storage mediums for clock synchronizing among detectors in a clock synchronizing configuration are provided. An example clock synchronizing method includes: providing a clock of a preset frequency in each of N modules to be synchronized, coupling every two adjacent modules of the modules by a transmission line of the same length, N being an odd number, selecting two different modules from the modules as two reference modules respectively, controlling each of the reference modules to transmit a synchronizing signal to the other modules, determining a clock error between every two modules having the same transmission distance from the reference module according to a moment of the synchronizing signal reaching each of the other modules, selecting a calibrating module from the modules, and implementing clock synchronization between each of the modules and the calibrating module according to the respective clock errors associated with the two reference modules.

Abstract: Methods, systems, and machine-readable storage mediums for clock synchronizing among detectors in a clock synchronizing configuration are provided. An example clock synchronizing method includes: providing a clock of a preset frequency in each of N modules to be synchronized, coupling every two adjacent modules of the modules by a transmission line of the same length, N being an odd number, selecting two different modules from the modules as two reference modules respectively, controlling each of the reference modules to transmit a synchronizing signal to the other modules, determining a clock error between every two modules having the same transmission distance from the reference module according to a moment of the synchronizing signal reaching each of the other modules, selecting a calibrating module from the modules, and implementing clock synchronization between each of the modules and the calibrating module according to the respective clock errors associated with the two reference modules.