Abstract: The present invention relates to the technical field of medicines and disclosed are a neuroprotective polypeptide compound and an application thereof. The neuroprotective polypeptide compound comprises a polypeptide having the following chemical formula and a salt thereof: (M)m-(Lys-Leu-Ser-Ser-Ile-Glu/Asp-Ser/Thr-Asp/Glu-Val/Leu)-(N)n; m and n are integers from 0 to 3, but m and n are not zero at the same time; M is beta-Ala-His, beta-Ala-1-Methyl-His or beta-Ala-3-Methyl-His, and N is beta-Ala-His, beta-Ala-1-Methyl-His or beta-Ala-3-Methyl-His. An intravenous dosage of only 3 mg/kg can unexpectedly achieve a significant therapeutic effect and achieve the same effect as NA1. The polypeptide compound can be used in combination with a hemolytic drug to provide a new possibility for the treatment of stroke.

Abstract: A connector and a connector assembly are disclosed. The connector has a housing adapted to be inserted into a mating housing of a mating connector; an elastic latch provided on an outer wall of the housing and having a locking part for locking the mating housing and an unlocking part for unlocking the locking part; and a connection position safety mounted on the outer wall of the housing and adapted to be moved between a safety position to prevent the elastic latch from being unlocked and a pre locking position to allow the elastic latch to be unlocked. When the locking part is locked to the mating housing and the connection position safety is in the pre locking position, the unlocking part is hidden inside the connection position safety, so that human finger cannot contact the unlocking part. Therefore, the present invention can effectively prevent the elastic latch from being accidentally unlocked and improve the use safety of the connector.

Abstract: The present invention discloses a connector and a connector assembly. The connector assembly has a first connector having a first housing and a second connector adapted to mate with the first connector and comprising a second housing. The first housing is adapted to be partially inserted into the second housing along an axial direction of the second housing, and an elastic latch for locking the second housing is formed on the first housing; a latch safety is installed on the second housing and movable along a circumferential direction of the second housing between a safety position to prevent the elastic latch from being unlocked and a pre-locking position to allow the elastic latch to be unlocked, a pushing part is formed on the first housing and adapted to push the latch safety to the pre-locking position at which the first housing is allowed to be inserted into the second housing.

Abstract: The present invention discloses a connector and a connector assembly. The connector has an outer housing and an inner housing detachably mounted in the outer housing for holding a terminal in the outer housing. The connector is adapted to be mounted on corresponding electrical equipment and mate with a corresponding mating connector. A first mating feature adapted to mate with the corresponding electrical equipment and a second mating feature adapted to mate with the corresponding mating connector are formed on the inner housing. In the present invention, when it is necessary to change the identification feature on the connector, only the inner housing or a part of the inner housing of the connector needs to be replaced without replacing the whole outer housing. Therefore, the cost is low and the use is very convenient.

Abstract: The present invention discloses a connector and a connector assembly. The connector has a housing and a terminal position holder detachably mounted on an end of the housing. A mating feature adapted to mate with a corresponding mating connector is formed on the terminal position holder, so that the connector is adapted to mate with the corresponding mating connector. In the present invention, when it is necessary to change the identification feature on the connector, only the terminal position holder needs to be replaced without replacing the whole housing. Therefore, the cost is low and the use is very convenient.

Abstract: The invention relates to an optical component comprising a metasurface, wherein the metasurface comprises a repeating pattern of unit cells, wherein each unit cell comprises at least two different scattering structures, wherein first scattering structures are at least partially contacting a first substance having a first refractive index and second scattering structures are at least partially contacting a second substance, which differs from the first substance, wherein the second substance provides a refractive index which is variable depending on an electrical control signal, wherein a plurality of pairs of first scattering structures contacting the first substance and second scattering structures contacting the second substance are arranged row-wise on electrodes, wherein electrodes supporting neighboring rows of pairs of first and second scattering structures are electrically separated from each other, and a LIDAR system comprising such an optical component.

Abstract: An optical component comprising a planar metasurface arranged on a surface of a first substrate and a top layer arranged in a height direction Z above the metasurface, wherein the metasurface comprises a plurality of scattering structures, wherein a dielectric material is deposited on a subset of the plurality of scattering structures, wherein an active media is sandwiched between the metasurface and the top layer, wherein an incident electromagnetic radiation is transmitted or reflected by the optical component, wherein a phase profile modulation is induced on the incident electromagnetic radiation during the reflection or transmission.

Abstract: The present invention discloses a connector and a connector assembly. The connector has a housing and a latch safety. The latch safety is slidably mounted on the housing and adapted to move between a safety position to prevent the mating connector from being unlocked and a pre-locking position to allow the mating connector to be unlocked. A guide slot is formed on an outer wall of the connector and surrounded by a first end wall and a second end wall spaced from each other in a circumferential direction of the housing and two side walls spaced from each other in an axial direction of the housing. The latch safety has a sliding plate slidably installed in the guide slot, and the sliding plate has a first end and a second end spaced from each other in the circumferential direction and a front and rear sides spaced from each other in the axial direction.

Abstract: A polarization-insensitive device includes a liquid crystal layer and an adjustment layer that are stacked. The liquid crystal layer is configured to perform, under action of an electric field, first phase adjustment on a passing light component in a first polarization direction. The adjustment layer is configured to obtain a first light beam and a second light beam based on the incident light component in the first polarization direction that passes through the liquid crystal layer, second phase adjustment and polarization direction adjustment are performed on the first light beam at the adjustment layer. A polarization direction of the first light beam is perpendicular to a polarization direction of the first light beam obtained before the polarization direction adjustment; and the first light beam and the second light beam have different propagation directions after passing through the liquid crystal layer.

Abstract: Provided is a multifunctional polypeptide, consisting of one or more of at least one Pro-Ala-Lys, Ala-Lys-Pro, Lys-Ala-Pro and a fragment thereof and a derived peptide, there being carnosine, anserine or ophidine at the C-terminus and/or N-terminus of the polypeptide. The polypeptide is formed by linking an oligopeptide having a thrombolysis function and carnosine composed of histidine, 1-methylhistidine and 3-methylhistidine, anserine or ophidine, etc., easily crosses the blood-brain barrier, and is administered by intravenous route for the treatment of nervous system diseases, especially brain damage and stroke.

Abstract: An audio conversion method, an audio playing method and an apparatus, the method including: receiving an audio acquisition request corresponding to a target chapter (101); in response to an absence of an audio file corresponding to the target chapter, segmenting the target chapter to obtain a plurality of text segments (102); generating an audio file corresponding to each of the text segments, and determining identification information of the audio file based on a typesetting order of each of the text segments in the target chapter; storing the audio file corresponding to each of the text segments, and generating an audio list based on file information of the audio file corresponding to each of the text segments and the identification information of the audio file (103); and determining an estimated total audio playing duration corresponding to the target chapter, and sending the audio list and the estimated total audio playing duration to a user terminal (104).

Abstract: An optical component (1) comprising a planar metasurface (2) arranged on a surface of a first substrate (3) and a top layer (4) arranged in a height direction Z above the metasurface (2), wherein the metasurface (2) comprises an array (9) of scattering structures (5, 5a, 5b), wherein the array (9) is a repeating pattern of unit cells (7), wherein a unit cell (7) comprises at least two different scattering structures wherein the optical properties of the metasurface (2) are controllable by a control signal, wherein first scattering structures (5, 5a) are at least partially contacting a layer of a first substance (6a) having a first refractive index and second scattering structures (5, 5b) are at least partially contacting a layer of a second substance (6b), which differs from the first substance (6a) and which provides a variable refractive index depending on the control signal.

Abstract: The present application provides a high-voltage connector and an electromagnetic shielding shell for the high-voltage connector, the electromagnetic shielding shell has an integrated barrel-shaped structure formed by a deep drawing process, and integrated barrel-shaped structure includes a barrel wall and a barrel bottom that are connected to each other.

Abstract: The present application provides a high-voltage connector and an electromagnetic shielding shell for a high-voltage connector, the electromagnetic shielding shell has a main body; a connecting body; and a plurality of elastic arms, arranged at intervals between the main body and the connecting body; an end of each of the elastic arms is connected to the main body, and the other end of each of the elastic arms is connected to the connecting body, each of the elastic arms is provided with a protrusion protruding in a radial direction, and the protrusion is configured for electrically contacting a shielding member of a mating connector.

Abstract: The present invention relates to the technical field of medicines. Disclosed are a synthetic peptide and an application thereof. The chemical formula of the synthetic peptide is (Gly)x-(beta-Ala-L-His)y-(Gly)z, (Gly)x-(beta-Ala-L-1-Methyl-His)y-(Gly)z or (Gly)x-(beta-Ala-L-3-Methyl-His)y-(Gly)z; y being equal to or greater than 1, and x and z being 0-3 and being not both equal to zero. A specific peptide can also have beta-Ala-L-His, beta-Ala-L-1-Methyl-His, or beta-Ala-L-3-Methyl-His simultaneously. In the synthetic peptide in the present invention, glycine, carnosine, anserine, ophidine or the like are creatively combined, and the developed mosaic synthetic peptide unexpectedly penetrates the blood-brain barrier to enter the brain by means of intravenous injection and effectively plays a role in treating nervous system diseases. In the present invention, a remarkable treatment effect can be achieved using only 3 mg/kg of synthetic polypeptide intravenous injection dosage.

Abstract: The present disclosure provides a method for controlling Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4). The present disclosure mainly aims to solve the problem of effectively inhibiting the Foc TR4, but the existing fungicides cannot effectively inhibit the Foc TR4 without damage to banana plants. By treating with the fungicide disclosed by the present disclosure, the growth of the Foc TR4 can be limited, and there is no adverse effect on banana plants.

Abstract: The present disclosure provides a method for controlling Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4). The present disclosure mainly aims to solve the problem of effectively inhibiting the Foc TR4, but the existing fungicides cannot effectively inhibit the Foc TR4 without damage to banana plants. By treating with the fungicide disclosed by the present disclosure, the growth of the Foc TR4 can be limited, and there is no adverse effect on banana plants.

Abstract: An optical component comprising a planar metasurface arranged on a surface of a first substrate and a top layer arranged in a height direction Z above the metasurface, wherein the metasurface comprises a plurality of scattering structures, wherein a dielectric material is deposited on a subset of the plurality of scattering structures, wherein an active media is sandwiched between the metasurface and the top layer, wherein an incident electromagnetic radiation is transmitted or reflected by the optical component, wherein a phase profile modulation is induced on the incident electromagnetic radiation during the reflection or transmission.

Abstract: A connection terminal and a connector are disclosed. The connection terminal has a terminal body, at least part of which is installed in a housing of a connector; and a first connection part arranged at one end of the terminal body and extending outside the housing to electrically connect with a bus bar. The first connection part has a plurality of side surfaces, and any one of the adjacent two side surfaces is selectively formed to match and connect with a surface of a connection end of the bus bar. In the present invention, the installation orientation of the connector can be any one of four or more different directions, which expands the application range of the connector.