Abstract: Provided is a composition for detecting multiple encephalitis/meningitis/respiratory pathogens. The composition includes primer sequences for the pathogens as shown in SEQ ID NOs: 1-7, 9-23 and 25-32, in which SEQ ID NOs: 1-7 and 9-16 carry fluorescent reporter groups. In addition, the present invention further provides a use of the foregoing composition in the preparation of a kit, and a related kit and a method for using the same.

Abstract: Embodiments of this application provide a connecting member, a battery cell, a battery, and an electric apparatus. The connecting member is for use in a battery cell. The connecting member includes a connecting portion and a bending portion. The connecting portion is connected to the bending portion. The connecting portion has a reinforcing structure, and the reinforcing structure is configured to make a bending strength of the connecting portion greater than a bending strength of the bending portion. In the connecting member provided in the embodiments of this application, the bending strength of the connecting portion of the connecting member is greater than the bending strength of the bending portion of the connecting member.

Abstract: A current collecting structure includes: a current collecting member, where the current collecting member includes a first connection end, a second connection end, and a bending portion, and the bending portion connects the first connection end and the second connection end; and a guide member, where the guide member is provided with a weakened portion, the bending resistance strength of the weakened portion is less than the bending resistance strength of other portions of the guide member except the weakened portion; the guide member cooperates with the current collecting member, the weakened portion corresponds in position to the bending portion, and the guide member is configured to guide the bending portion to bend at a position of the weakened portion.

Abstract: Embodiments of this application provide a battery cell, a battery, and an electrical device. The battery cell includes: a shell, having a first wall; a pressure relief mechanism, disposed at the first wall; an electrode lead-out portion, disposed on the shell; an electrode assembly, disposed in the shell, the electrode assembly including a tab; an adapter member, connecting the electrode lead-out portion to the tab; and a gap control portion, disposed in the shell, the gap control portion being configured to be able to restrict the adapter member from shielding a pressure relief hole formed by the pressure relief mechanism in the event of thermal runaway of the battery cell.

Abstract: Provided are battery cell, battery, and electrical device. The battery cell includes box body, end cover, electrode assembly, and first current collecting member and second current collecting member arranged separately, wherein the housing is provided with opening; the end covers on the opening; the electrode assembly is accommodated in the housing; the electrode assembly is provided with electrode lug; the first current collecting member is connected to the electrode lug; and the second current collecting member is connected to the end cover, wherein along thickness direction of the end cover, the first current collecting member and the second current collecting member are stacked and connected to each other; the second current collecting member is located on one side of the first current collecting member facing the end cover; and projection of the second current collecting member is located within outer edge of the first current collecting member.

Abstract: The present application relates to a cylindrical cell, a battery, and a power consuming device, and belongs to the field of battery manufacturing technology. The present application provides a cylindrical cell, comprising: a housing, the housing having an opening at an end in a first direction; and an end cap, covering the opening; wherein the housing comprises a side wall, the side wall comprises a first wall portion and a second wall portion disposed in the first direction, the second wall portion is located on a side of the first wall portion close to the opening, the second wall portion has a thickness greater than the thickness of the first wall portion, and the second wall portion is welded to the end cap.

Abstract: A helmet is disclosed including: a helmet body; a jaw guard with two fork handles through which the jaw guard is mounted on the helmet body and rotatable around a fixed axis relative to the helmet body; a shield assembly including a shield and a bracket, which is movable between a lowered position and a raised position relative to the helmet body; and a lifting mechanism including a trigger located beside the bracket of the shield assembly and driven by the fork handles of the jaw guard, and the trigger can touch the bracket of the shield assembly at the lowered position and raise the shield assembly from the lowered position. The lifting mechanism further includes an elastic element with one end connected with the bracket, which is arranged to make the shield assembly continue to move to the raised position after the shield assembly leaves the lowered position.

Abstract: Provided in the present invention is a composition capable of detecting and typing novel coronavirus 2019-nCoV, coronavirus 229E, coronavirus NL63, coronavirus OC43, coronavirus HKU1, coronavirus MERSr-CoV, and coronavirus SARSr-CoV. At the same time, further provided is a kit comprising the composition and a method for detecting and typing coronaviruses. The composition of the present invention in combination with a fluorescent probe method and a melting curve method can perform simultaneous detection and typing of seven coronaviruses in one tube.

Abstract: Provided is a composition for detecting a novel coronavirus, influenza A virus and influenza B virus; moreover, also provided are a kit including the composition, an application of the kit, and a method for detecting and typing viruses causing respiratory tract infection.

Abstract: A helmet is disclosed including: a helmet body; a jaw guard with two fork handles through which the jaw guard is mounted on the helmet body and rotatable around a fixed axis relative to the helmet body; a shield assembly including a shield and a bracket, which is movable between a lowered position and a raised position relative to the helmet body; and a lifting mechanism including a trigger located beside the bracket of the shield assembly and driven by the fork handles of the jaw guard, and the trigger can touch the bracket of the shield assembly at the lowered position and raise the shield assembly from the lowered position. The lifting mechanism further includes an elastic element with one end connected with the bracket, which is arranged to make the shield assembly continue to move to the raised position after the shield assembly leaves the lowered position.

Abstract: A composition for detecting SARS-CoV-2 is provided; moreover, a kit including the composition, the use of the kit, and a method for detecting SARS-CoV-2 are also provided.

Abstract: Provided is a composition for detecting multiple encephalitis/meningitis/respiratory pathogens. The composition includes primer sequences for the pathogens as shown in SEQ ID NOs: 1-7, 9-23 and 25-32, in which SEQ ID NOs: 1-7 and 9-16 carry fluorescent reporter groups. In addition, the present invention further provides a use of the foregoing composition in the preparation of a kit, and a related kit and a method for using the same.

Abstract: The present invention provides methods for inducing regression of tumors in human subjects, the methods utilize a modified mesogenic strain of Newcastle disease virus (NDV) with modified F protein cleavage site, which is non-pathogenic to poultry (lentogenic), but exhibits oncolytic properties. The disclosed methods provide safe, effective and reliable means to induce regression of a tumor in an individual in need thereof. These methods overcome the drawbacks of using pathogenic strains of viruses for human therapy.

Abstract: Provided are a metasurface primary mirror, a metasurface secondary mirror, a method for manufacturing a metasurface primary mirror, a method for manufacturing a metasurface secondary mirror, and an optical system. The metasurface primary mirror, manufactured by using the method for manufacturing a metasurface primary mirror, includes a transparent substrate which includes a primary mirror metasurface pattern on the transparent substrate. The primary mirror metasurface is configured to satisfy a primary mirror phase distribution such that incident light reflected by a metasurface secondary mirror onto the metasurface primary mirror is reflected and focused.

Abstract: The present application discloses a method for preparing optical metasurfaces, wherein the method is performed based on nano-imprinting, and the template used in the method is an imprinting template with patterns of meta-atoms. The method for preparing optical metasurfaces provided by the present application can replace the electron beam lithography method used in fabricating meta-atoms, greatly reducing the costs, and greatly reducing the production time. The method provided by the present application significantly improves the production cost and the production time, achieving a low-cost, large-scale fabrication of metasurface-based optical elements within a short time, and having good industrialization prospects.

Abstract: A microfluidic chip for circulating tumor cell separation, comprising a first shell layer, a second shell layer, and a filter membrane between the first shell layer and the second shell layer. A first channel is formed between the filter membrane and the first shell layer; a second channel is formed between the filter membrane and the second shell layer; the first shell layer is provided with m input interfaces and n output interfaces, wherein m is greater than or equal to 1 and n is greater than or equal to 1; the second shell layer is provided with x input interfaces and y output interfaces, wherein x is greater than or equal to 1 and y is greater than or equal to 1. The chip is used for circulating tumor cell separation to achieve high flux, high efficiency, and a simple method, and facilitate promotion.

Abstract: Disclosed are a system and method for micro-nano machining by femtosecond laser two-photon polymerization. The system includes: a femtosecond laser, an external light path modulation unit, an image capture apparatus, a focusing lens, a displacement platform, a computer and a monitoring apparatus, where the image capture apparatus is configured to capture cross-section graphs of a three-dimensional micro-nano device layer by layer, so that modulated femtosecond lasers form parallel beams arranged according to all layers of the cross-section graphs.

Abstract: The present invention provides methods for inducing regression of tumors in human subjects, the methods utilize a modified mesogenic strain of Newcastle disease virus (NDV) with modified F protein cleavage site, which is non-pathogenic to poultry (lentogenic), but exhibits oncolytic properties. The disclosed methods provide safe, effective and reliable means to induce regression of a tumor in an individual in need thereof. These methods overcome the drawbacks of using pathogenic strains of viruses for human therapy.

Abstract: The present invention provides methods for inducing regression of tumors in human subjects, the methods utilize a modified mesogenic strain of Newcastle disease virus (NDV) with modified F protein cleavage site, which is non-pathogenic to poultry (lentogenic), but exhibits oncolytic properties. The disclosed methods provide safe, effective and reliable means to induce regression of a tumor in an individual in need thereof. These methods overcome the drawbacks of using pathogenic strains of viruses for human therapy.

Abstract: An expansion polymerization imprinting glue for nano-imprinting. Raw materials required for the preparation of the expansion polymerization imprinting glue comprise a low polymer and an expansion monomer. Compared with the prior art, after the expansion monomer is introduced into the expansion polymerization imprinting glue for nano-imprinting, the expansion monomer can be polymerized with the low polymer, the volume change of the imprinting glue after polymerization can be adjusted, and accordingly the volume shrinkage after the imprinting glue is cured is reduced or even eliminated; and the imprinting glue having zero curing shrinkage or volume expansion can be obtained by adjusting the content of the expansion monomer. The imprinting glue can effectively reduce the residual stress in a micro-nano pattern, and the generation of pattern defects in the nano-imprinting demolding process caused by the residual stress is reduced while accurate pattern copying is implemented.