Abstract: This disclosure relates to the electrochemical field, and in particular, to a positive electrode material and a preparation method and usage thereof. The positive electrode material of this disclosure includes a substrate, where a general formula of the substrate is LixNiyCozMkMepOrAm, where 0.95?x?1.05, 0.5?y?1, 0?z?1, 0?k?1, 0?p?0.1, 1?r?5.2, 0?m?2, m+r?2, M is selected from one or more of Mn and Al, Me is selected from one or more of Zr, Zn, Cu, Cr, Mg, Fe, V, Ti, Sr, Sb, Y, W, and Nb, and A is selected from one or more of N, F, S, and Cl; and an oxygen defect level of the positive electrode material satisfies at least one of condition (1) or condition (2): (1) 1.77?OD1?1.90; or (2) 0.69?OD2?0.74.

Abstract: Provided are a bovine rotavirus fusion protein and calf diarrhea multivalent vaccine. The bovine rotavirus fusion protein contains a VP6 fragment, wherein the VP6 fragment contains an amino acid sequence as represented by SEQ ID NO. 4, and at least one loop region of the following (a)˜(c) is substituted with an antigenic epitope derived from bovine coronavirus and/or an antigenic epitope derived from E. coli: (a) amino acid residues of sites 168-177; with an amino acid sequence as represented by SEQ ID NO. 1; (b) amino acid residues of sites 194-205; with an amino acid sequence as represented by SEQ ID NO. 2; and (a) amino acid residues of sites 296-316, with an amino acid sequence as represented by SEQ ID NO. 3, The bovine rotavirus fusion protein contains a plurality of antigenic epitopes, and can enable a host to generate a plurality of antibodies after immunizing the host.

Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm or LixNiyCozMkMepOrAm whose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size Dn10 of the positive active material satisfies: 0.5 ?m?Dn10?3 ?m. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.

Abstract: The present invention relates to a molecular marker, a specific primer pair, and an identification method of the high-quality Ganoderma lucidum strain HMGIM-M624. The high-quality Ganoderma lucidum strain HMGIM-M624 was preserved in Guangdong Microbial Culture Collection Center (address: 5th Floor, No. 59 Building of No. 100 Yard, Mid. Xianlie Road, Guangzhou City) with the preservation number of GDMCC No: 60889 on Nov. 7, 2019. The molecular marker is an InDel molecular marker. The high-quality Ganoderma lucidum strain HMGIM-M624 has a base deletion of CATGCTGTA at the 246451th-246460th site of the chromosome sca34. The present invention provides reagents for detecting the molecular marker of the high-quality Ganoderma lucidum strain HMGIM-M624. The reagents can distinguish the high-quality Ganoderma lucidum strain HMGIM-M624 from the other 11 G. lucidum strains for commercial cultivation, thus specifically identifying the high-quality Ganoderma lucidum strain HMGIM-M624.

Abstract: The present application relates to the electrochemical field, and in particular, to a positive electrode material, and an electrochemical energy storage apparatus having thereof. The present application provides a positive electrode material, including a substrate. The substrate includes secondary particles containing primary particles. A surface of the substrate is coated with an oxide coating layer. The oxide coating layer comprises a coating element, and the coating element is selected from one or more of Al, Ba, Zn, Ti, Zr, Mg, W, Y, Si, Sn, B, Co, or P. The electrochemical energy storage apparatus comprises the foregoing positive electrode material.

Abstract: A basket assembly, an audio unit and an electronic device. The basket assembly is applied to an audio unit with a voice coil and includes a basket body. The basket body includes: a metal portion, a plastic portion coupled to the metal portion; and a conductive member embedded in the plastic portion and forming a first contact and a second contact exposed out of the plastic portion, the first contact is configured to be electrically coupled to the voice coil of the audio unit, the second contact is configured to be electrically coupled to a target circuit, and the target circuit includes an audio signal input circuit or an audio signal output circuit.

Abstract: A basket assembly, an audio unit and an electronic device. The basket assembly is applied to an audio unit with a voice coil and includes a basket body. The basket body includes: a metal portion, a plastic portion coupled to the metal portion; and a conductive member embedded in the plastic portion and forming a first contact and a second contact exposed out of the plastic portion, the first contact is configured to be electrically coupled to the voice coil of the audio unit, the second contact is configured to be electrically coupled to a target circuit, and the target circuit includes an audio signal input circuit or an audio signal output circuit.

Abstract: A screen component includes a screen body and at least one vibration assembly. The vibration assembly includes a movable member made from a giant magnetostrictive material and at least one coil surrounding the movable member, and the movable member is partially attached to the screen body. The at least one coil forms a magnetic field when the coil is supplied with an input current. The movable member deforms under the effect of the magnetic field. The magnetic field changes according to a change in parameter of the input current. A deformation amount of the movable member changes according to the change in magnetic field of the coil to drive the screen body to vibrate to output corresponding sound information by the screen component.

Abstract: A screen component includes a screen body and at least one vibration assembly. The vibration assembly includes a movable member made from a giant magnetostrictive material and at least one coil surrounding the movable member, and the movable member is partially attached to the screen body. The at least one coil forms a magnetic field when the coil is supplied with an input current. The movable member deforms under the effect of the magnetic field. The magnetic field changes according to a change in parameter of the input current. A deformation amount of the movable member changes according to the change in magnetic field of the coil to drive the screen body to vibrate to output corresponding sound information by the screen component.