Abstract: The present application discloses a glass fiber sizing composition. The glass fiber sizing composition comprises effective components and water, and has a solid content of 4.0% to 6.0%; and the effective components comprise a silane coupling agent, a film former, a lubricant, a surfactant, a leveling agent, an interfacial reinforcing agent, a wetting agent, a defoaming agent, and a pH regulator. A glass fiber produced by the sizing composition has desirable strand integrity properties, softness and high dispersibility after a certain tension; the glass fiber also has high permeation velocity and complete permeation effect in the epoxy resin. The glass fiber shows excellent interfacial compatibility with the resin, and is suitable for weaving technology, especially for producing a heavy wind blade fabric. A composite formed by vacuum infusion of the fabric and the epoxy resin has desirable static mechanics and fatigue properties.

Abstract: The present disclosure discloses a color matching evaluation method combining similarity measure and visual perception. The method includes: firstly, constructing an image database with rich color information; extracting main colors from an acquired image using an improved clustering method for color matching; generating a corresponding palette using an intelligent color matching recommendation system, and evaluating a palette similarity using a minimum color difference model; then, recoloring the corresponding image using the generated palette through an image recoloring technology to obtain a recolored image, and calculating a structural similarity between the source image and the recolored image; performing feature level adaptive weighted fusion on the palette similarity and the structural similarity, and performing an eye movement tracking experiment on the source image and the recolored image to obtain visual perception data of the images.

Abstract: The disclosure relates to the technical field of batteries, and provides a battery and a method for manufacturing the battery. The battery includes a liquid injection hole and a positioning portion, the liquid injection hole has a first center point, the positioning portion is formed with a second center point. There is a preset distance between the first center point and the second center point, so as to determine the first center point through the second center point. The liquid injection hole has a first center point, the positioning portion is formed with the second center point, and there is a preset distance between the first center point and the second center point.

Abstract: Embodiments of this application disclose a head-mounted wireless headset and a communication method thereof, and relate to the communication field. A specific solution is as follows: The head-mounted wireless headset includes: a first headphone, including: a first short-range wireless communication chip and a first radio frequency antenna, where the first short-range wireless communication chip is coupled to the first radio frequency antenna; a second headphone, including: a second short-range wireless communication chip and a second radio frequency antenna, where the second short-range wireless communication chip is coupled to the second radio frequency antenna; and a data bus, separately connected to the first short-range wireless communication chip and the second short-range wireless communication chip, and configured to provide a physical link required for communication between the first short-range wireless communication chip and the second short-range wireless communication chip.

Abstract: Disclosed are a base station, and a broadband dual-polarized filtering magneto-electric dipole antenna and a radiation unit thereof. A radiation structure includes two dipoles with a polarization direction orthogonal to each other. Each dipole includes two radiators arranged opposite to each other. A balun structure includes four balun assemblies, each balun assembly includes two balun grounds arranged opposite to each other at an interval, and a feeder line and an open-stub arranged opposite to each other at an interval and electrically connected to each other. One balun ground is electrically connected to one radiator, the other balun ground is electrically connected to the other adjacent radiator. The feeder line and one balun ground are arranged opposite to each other at an interval. The open-stub and the other balun ground are arranged opposite to each other at an interval. The balun grounds are arranged between the feeder line and the open-stub.

Abstract: A millimeter wave filtering antenna and a wireless communication device are disclosed. The millimeter wave filtering antenna includes a parasitic unit, a feeding unit and a feeding network. The parasitic unit includes at least one quadrilateral parasitic patch and at least one cross shaped parasitic patch, both of which are nested and combined with each other. The feeding unit includes a feeding patch, and the feeding patch is loaded with a short-circuit patch to form coupling. The feeding network feeds the feeding unit. The wireless communication device includes a millimeter wave filtering antenna according to the present disclosure. The radiation performance of the antenna can not only realize the filtering characteristics with high roll-off and high isolation, but also ensure that no additional insertion loss is introduced.

Abstract: The invention discloses a dual-polarized filtering magneto-electric dipole antenna, which comprises an upper dielectric substrate and a lower dielectric substrate. The upper surface of the upper dielectric substrate is printed with a radiator structure, and the lower dielectric substrate is printed with a slot coupling feed network; the radiator structure comprises four parasitic patches loaded with symmetrical slots. The parasitic patches are loaded with short-circuit probes, and the slot coupling feed network comprises two orthogonal sets of Y-shaped feeders and cross-shaped slots, and the cross-shaped slots are printed on a metal floor. The new parasitic slot structures on the radiator structure increases the bandwidth while introducing a high roll-off band edge filtering effect, and combined with the slot coupling feed network with filtering function to achieve good band-pass filtering characteristics and hardly introduce additional insertion loss.

Abstract: The present invention provides a walnut oligopeptide powder, a preparation method and application thereof. The oligopeptide powder has a peptide content of 80 wt % or higher, in which 95% or more of the peptides have a molecular weight of less than 1,500 Da. The method includes extracting walnut proteins using a highly efficient countercurrent extraction process, and subjecting the extract to filtration, enzymolysis, purification with a microfiltration membrane and an ultrafiltration membrane, concentrating, and spray drying to obtain the oligopeptide powder. The oligopeptide powder has an anti-oxidant activity and provides a protective effect for a neuron, and thus can ameliorate or treat memory deterioration and relieve fatigue.

Abstract: The invention discloses a dual-polarized filtering magneto-electric dipole antenna, which comprises an upper dielectric substrate and a lower dielectric substrate. The upper surface of the upper dielectric substrate is printed with a radiator structure, and the lower dielectric substrate is printed with a slot coupling feed network; the radiator structure comprises four parasitic patches loaded with symmetrical slots. The parasitic patches are loaded with short-circuit probes, and the slot coupling feed network comprises two orthogonal sets of Y-shaped feeders and cross-shaped slots, and the cross-shaped slots are printed on a metal floor. The new parasitic slot structures on the radiator structure increases the bandwidth while introducing a high roll-off band edge filtering effect, and combined with the slot coupling feed network with filtering function to achieve good band-pass filtering characteristics and hardly introduce additional insertion loss.

Abstract: A millimeter wave filtering antenna and a wireless communication device are disclosed. The millimeter wave filtering antenna includes a parasitic unit, a feeding unit and a feeding network. The parasitic unit includes at least one quadrilateral parasitic patch and at least one cross shaped parasitic patch, both of which are nested and combined with each other. The feeding unit includes a feeding patch, and the feeding patch is loaded with a short-circuit patch to form coupling. The feeding network feeds the feeding unit. The wireless communication device includes a millimeter wave filtering antenna according to the present disclosure. The radiation performance of the antenna can not only realize the filtering characteristics with high roll-off and high isolation, but also ensure that no additional insertion loss is introduced.

Abstract: The present invention provides a walnut oligopeptide powder, a preparation method and application thereof. The oligopeptide powder has a peptide content of 80 wt % or higher, in which 95% or more of the peptides have a molecular weight of less than 1,500 Da. The method includes extracting walnut proteins using a highly efficient countercurrent extraction process, and subjecting the extract to filtration, enzymolysis, purification with a microfiltration membrane and an ultrafiltration membrane, concentrating, and spray drying to obtain the oligopeptide powder. The oligopeptide powder has an anti-oxidant activity and provides a protective effect for a neuron, and thus can ameliorate or treat memory deterioration and relieve fatigue.