Abstract: The present disclosure relates to a stray light suppression device for bathymetric LiDAR onboard unmanned shipborne, belonging to the technical field of LiDAR water depth detection, particularly to a stray light suppression device for bathymetric LiDAR onboard unmanned shipborne. The device comprises an optical system component, a first objective lens barrel, a second objective lens barrel, a spectroscope barrel, a first eyepiece barrel a, a first eyepiece barrel b, a second eyepiece barrel a, a second eyepiece barrel b, a PMT detector a, a PMT detector b and a spectroscope supporting structure. Stray light suppression of an optical system with minimal field-of-view is realized, and stray light propagated by first-order, second-order and third-order scattered light paths is suppressed, so that a water depth detection capability of the bathymetric LiDAR onboard unmanned shipborne is improved and a dynamic detection range is expanded.

Abstract: A method and device for synthesizing binary waveforms, wherein the initial analogue waveform is first converted into the segments with discrete levels, then each said discrete level section is in turn converted into a binary pulse of the same time duration as the given segment, and the average value of the generated pulse is proportional to the average value of the given initial waveform over the time duration of the given segment.

Abstract: The present disclosure provides a grinding robot for an inside wall of a small diameter pipe. The grinding robot includes a grinding device, a transmission device, and a driving device. By arranging the grinding robot into the above three portions, the overall bending pipe passability of the robot can be increased, which is convenient for the grinding robot to grind the small diameter pipe. A first gimbal and two second gimbals provided in the transmission device enable the grinding robot to flexibly pass through bends of the pipe, and enable a grinding driving force to be variably transmitted to the grinding device. When the grinding body rotates and contacts a pipe wall, a reaction force of the pipe wall on the grinding body is balanced by an adjusting spring adjustment force in a balance adjusting device and a self-weight of a grinding body.

Abstract: Disclosed in the present invention are an RNA replicon for improving gene expression, and a use thereof. The RNA replicon comprises: 5? and 3? untranslated regions; a non-structural protein gene coding region, a subgenomic promoter and a target gene coding region. In the present invention, a PCR site-directed mutagenesis technique is used to introduce the non-structural protein region mutant replicable RNA, which is transfected into mammalian eukaryotic cells by means of Lipofectamine 2000 or nanoparticles, so as to significantly enhance the expression of cytokines and chemokines including GM-CSF, IFN-?, IL-2, IL-12, IL-15 mediated by downstream subgenomic promoters, and can be applied to treatment of tumors, infectious diseases, autoimmune diseases, hereditary diseases or cardiovascular diseases.

Abstract: Provided are a phenanthroimidazole derivative, and a preparation method therefor, and an application thereof. The phenanthroimidazole derivative has a structural formula as shown in Formula (I), R being an electron donor group, wherein by taking a phenanthroimidazole group containing a trifluoromethyl phenyl group as an electron acceptor, and in virtue of the properties of the specific electron donor group R, the phenanthroimidazole derivative containing a light-absorbing photosensitive group of a series D-?-A structure is synthesized, and can be used as a photoinitiator, which is used in the technical field of UV light-curing systems or 3D printing.

Abstract: In a DAB circuit including a first bridge and a second bridge, a boost circuit is shared by connecting reactors between a storage battery and the first bridge. In each leg of the first bridge, in order to increase an absolute value of a reactor current, an ON period of one switching element of a switching element on a high voltage side and a switching element on a low voltage side is provided, and then, an ON period of the other switching element is provided. An ON period length of the one switching element is set according to a control command value of a DC voltage input to the first bridge. An ON period length of the other switching element is set to a time length until an absolute value of the reactor current that has increased during the ON period of the one switching element returns to zero.

Abstract: The present disclosure provides a phage for lysing Burkholderia gladioli and use thereof, and belongs to the technical field of phages. The phage for lysing Burkholderia gladioli provided by the present disclosure is Burkholderia gladioli phage vB_BglM_WTB with an accession number of CCTCC M 2023525, which is a novel phage. The phage provided by the present disclosure has a strong lytic effect on the Burkholderia gladioli with higher temperature tolerance and wider acid-base tolerance range and effectively kills the Burkholderia gladioli on food surface, providing a new strategy for controlling the Burkholderia gladioli in food processing and environment.

Abstract: A positioning and information transmission method of a hydrological monitoring device in a single-free area combines a wireless communication technology with a hydrodynamics-based hydrological monitoring device, which can solve the problem of hydrological monitoring information transmission in a signal-free area such as a hydraulic tunnel. First, magnetic beacons each composed of an LoRa (long distance radio) terminal device and an ultra-wideband technology are arranged at the top of the interior of a signal-free tunnel at an interval of 500 m. When a hydrological monitoring device in use enters a coverage area of the magnetic beacon, the LoRa terminal device in the magnetic beacon will automatically start an internal communication protocol and receive data acquired by the device by monitoring, the data is transmitted based on a mutual LoRa communication protocol between the magnetic beacons, and finally, the data is transmitted to a ground central control system for storage.

Abstract: A wireless power transfer system includes a cavity resonator entirely surrounded by an electromagnetic wave shielding member having appropriate conductivity and frequency selectivity; at least one power reception unit; at least one power transmission unit; and at least one resonator (e.g., a resonant network). In an equivalent circuit of the wireless power transfer system from a power transmission circuit of the power transmission unit to a power reception circuit of the power reception unit, N (N?2) resonators including the cavity resonator are connected in series via an inverter on a power transmission route from the power transmission circuit to the power reception circuit.

Abstract: Disclosed is a method, system, and electronic device for precision roll bending of cylinder with variable curvature section. The method first obtains process parameters of roll bending of a target cylinder, and then conducts roll bending rebound simulation of the cylinder based on the process parameters to determine influence factors of rebound compensation error. Then, multiple sets of different preset influence factor values are set to perform roll bending rebound simulation of different arc segments. This disclosure uses multiple simulations of the rebound caused by cylinder roll bending to determine the factors that affect the rebound compensation error and the magnitude of the rebound compensation error that may be caused by these factors. Finally, an expression for the rebound compensation error is obtained to correct the rebound compensation equation, eliminating the error caused by rebound compensation, and ensuring that the cylinder forming meets the expected accuracy requirements.

Abstract: A high voltage pulse generation device includes n transformer cores configuring a transformer, n being a natural number of 2 or more, each of the n transformer cores being configured to form a magnetic circuit along a first plane and to have a width in a first direction parallel to the first plane larger than a width in a second direction parallel to the first plane and perpendicular to the first direction; n primary electric circuits of the transformer connected in parallel to each other, each of the n primary electric circuits including at least one primary coil, and m pulse generation units connected in parallel to the at least one primary coil, m being a natural number equal to or more than 2; and a secondary electric circuit of the transformer including a secondary coil and connected to a pair of discharge electrodes.

Abstract: A method for producing sclareol by fermentation of cigar tobacco flower buds is provided, including: mixing cigar tobacco flower buds with deionized water, sterilizing and adding edible yeast, then fermenting at 25-30° C. and 100-300 rpm/min for 24-30 h. This method uses cigar tobacco flower buds as the sole raw material, without adding additional nutrients, and only ferments tobacco flower buds with edible yeast to synthesize sclareol. Meanwhile, this method has extremely high synthesis efficiency.

Abstract: The present invention relates to unsupervised tracking technology, specifically an unsupervised tracking model training strategy based on contrastive loss. The method comprises: S1: forming a constrained SSCI module using the relation between objects within a video frame and between adjacent video frames; S2: setting features of different objects in each frame as negative samples, and similar adjacent frame objects as positive sample pairs, constructing contrastive loss; S3: constraining embedded features (E_t) by variable loss based on self-supervised contrastive loss. This invention provides a contrastive loss-based training strategy for unsupervised multi-object tracking, leveraging the prior that objects in a frame must be different to enhance object similarity, and using self-supervised learning to match similar objects in short-interval frames as positive samples to boost cross-frame feature expression.

Abstract: A speed regulating valve, an alignment system, and an alignment method are provided. The speed regulating valve includes a valve core and a valve base. The valve core is provided with an internal channel and is in communication with an inlet of the speed regulating valve. A first speed regulating port is arranged on the valve core. The valve base is in communication with an outlet of the speed regulating valve, and a second speed regulating port is arranged on the valve base. The valve core and the valve base are rotatable relative to each other, and the second speed regulating port is on a trajectory of a rotation of the first speed regulating port.

Abstract: A computer includes a processor and a memory, and the memory stores instructions executable by the processor to determine a quantity of relative motion between a host vehicle and a target vehicle; in response to the quantity of relative motion being below a threshold, determine a pose of the host vehicle subject to a constraint on motion of the host vehicle; and in response to the quantity of relative motion being above the threshold, determine the pose of the host vehicle without the constraint.

Abstract: The present application belongs to the field of organic electroluminescence and specifically relates to a fluorinated tetradentate platinum (II) complex, an electronic device, an equipment and application of the fluorinated tetradentate platinum (II) complex. The present application provides a fluorinated tetradentate platinum (II) complex, which has a structure as shown in Formula (I) or Formula (II): In Formula (I) or Formula (II), F1 represents one or more F substitutions on the benzene ring where it is (they are) located, where n is a positive integer from 1 to 5; R1, R2, R3, and R4 are each independently selected from the group consisting of hydrogen, N, a C1-C30 alkyl, a C1-C30 cycloalkyl, and a C6-C60 aryl. The compound has good chemical stability, which can improve and balance the transport of holes and electrons, making energy transfer between the host and guest more efficient.

Abstract: The disclosure belongs to the technical field of biomedical materials, and provides a bio-ink, application thereof, a penile corpus cavernosum prosthesis and a preparation method thereof. The bio-ink provided by the disclosure includes a polymer-based material, an initiator, a crosslinking agent, a light absorber, and water. The bio-ink provided by the disclosure can undergo a gelation reaction under ultraviolet light irradiation, and an obtained hydrogel matrix material can have an elongation at break reaching 200-600%, so as to be applied to 3D printing. The disclosure further provides a penile corpus cavernosum prosthesis. For the penile corpus cavernosum prosthesis provided by the disclosure, with biocompatible hydrogel as a matrix material, an anticoagulant layer obtained by coating can effectively reduce the risk of thrombosis and has good safety and stability. The penile corpus cavernosum prosthesis of the disclosure has bionic vascular sinus cavity and bionic white membrane structures.

Abstract: The present disclosure relates to an asymmetric compensation method and apparatus for a two-port near field probe, a device, and a storage medium. The method includes: obtaining a first scattering parameter collected by a symmetric two-port network established based on a symmetric two-port near field probe; obtaining a second scattering parameter collected by an asymmetric two-port network established based on an asymmetric element; obtaining an overall response of a calibration network in a magnetic field environment, the calibration network being established based on the symmetric two-port near field probe and the asymmetric element; calculating a calibration factor based on the scattering parameter of the symmetric two-port near field probe, the scattering parameter of the asymmetric element, and the overall response of the calibration network in the magnetic field environment; and compensating the symmetric two-port near field probe according to a calibration factor.

Abstract: Disclosed in the present invention is a health state assessment method for equipment based on a knowledge graph attention network, includes: steps: 1) constructing a graph data model which can comprehensively reflect change of a health state of the equipment by deeply integrating association relationships of equipment components, monitoring data dependence relationships and priori information, etc. by means of a knowledge graph and by combining with domain priori knowledge; 2) extracting feature information of the health state knowledge graph by using a graph attention network, and obtaining a target node vector representation which accurately reflects the health state of the equipment by means of learning; and 3) making a health state representation vector of the equipment pass through a fully connected layer to obtain a health state classification prediction probability, and performing training to reducing a loss value relative to a true label, thereby obtaining a health state assessment result.

Abstract: Provided are a P-type ZrCoSb-based half-Heusler single crystal alloy and a preparation method thereof. The method for preparing the P-type ZrCoSb-based half-Heusler single crystal alloy includes: subjecting alloy raw materials to smelting under a first protective atmosphere to obtain a half-Heusler polycrystalline alloy ingot, the alloy raw materials corresponding to a chemical composition of the P-type ZrCoSb-based half-Heusler single crystal alloy; and subjecting the half-Heusler polycrystalline alloy ingot to vertical Bridgman directional crystallization under a second protective atmosphere to obtain the P-type ZrCoSb-based half-Heusler single crystal alloy. The P-type ZrCoSb-based half-Heusler single crystal alloy has the chemical composition of ZrCoSb1-xSnx, x in the ZrCoSb1-xSnx being in a range of 0.1?x?0.3; and the P-type ZrCoSb-based half-Heusler single crystal alloy has an MgAgAs-type crystal structure.