12results about How to "Clear path" patented technology

The application discloses a Φ-OTDR and MZ-Sagnac fusion system XPM crosstalk suppression method based on single-pulse period local symmetry pairing, and is suitable for a single-fiber composite sensing system which integrates a Φ-OTDR module and a MZ-Sagnac interference module in the same sensing optical fiber through a wavelength division multiplexing mode. The method of the application obtains a pulse trigger signal and an interference output signal of the Φ-OTDR, synchronously segments the interference output signal according to a pulse repetition period, determines a local time window and a center position of the local time window affected by XPM crosstalk in each single-pulse period, then performs a weighted pairing operation on equidistant sampling points on both sides of the center, obtains a local recovery signal and an XPM crosstalk estimation component, and corrects a contaminated signal by using the local recovery signal, so as to realize XPM crosstalk suppression, improve the phase demodulation precision, disturbance positioning ability and event identification reliability of the composite sensing system.

The application discloses a snowmelt runoff prediction method and system based on direct measurement of snow water equivalent, and belongs to the technical field of hydrological monitoring. The system comprises a cooperative observation network composed of an acoustic source array emitting coded acoustic waves and a sensing optical fiber laid on the ground surface; a distributed optical fiber acoustic wave sensing demodulator for receiving a snow layer modulated vibration signal; a fusion inversion calculation unit adopting a physical information neural network algorithm, embedding an acoustic wave fluctuation equation as a constraint into network training, and directly inverting a continuous spatial distribution of the snow water equivalent from the signal; and a runoff prediction module for predicting runoff by using the distributed data. The application breaks through the limitations of traditional point measurement and satellite remote sensing, realizes direct, high-resolution and high-precision surface measurement of the snow water equivalent, fundamentally improves the input data quality of the snowmelt runoff prediction model, and has the characteristics of high precision, strong reliability and cost-effectiveness.

The invention relates to the technical field of compressed air energy storage and underground gas storage, in particular to a wellhead device suitable for an air salt cavern gas storage and a method for protecting a casing pipe of the air salt cavern gas storage. The problems that the inner wall of a sleeve is prone to corrosion, and the safety and the service life of a gas storage are affected are solved. Comprising a main channel, a first valve, a gas storage device, a first branch, a second branch, a second valve and a third valve, the first valve is arranged on the main channel, and the first branch and the second branch are communicated with pipe sections on the two sides of the main channel and the gas storage device respectively. At the end of the energy storage process, the ground energy storage and release system fills air into the air storage device; and after the energy release process is finished, air in the air storage device is injected into the sleeve of the salt cavern air storage through the second branch, so that an air isolation section is formed in the sleeve, and the rising high-humidity and high-salt air in the salt cavern is isolated from being in direct contact with the inner wall of the sleeve. The corrosion risk of the sleeve can be reduced, the hidden danger of air leakage is reduced, and the service life of the air salt cavern gas storage is prolonged.

The application discloses a use of a CSF1R targeting drug in preparation of a drug for preventing radiation-induced intestinal injury. Specifically, the application proves by systematic experimental data that a CSF1R inhibitor can significantly improve survival and regeneration in a specific dose / time window, directly proves the protection of the CSF1R inhibitor on a "crypt stem cell core damage chain", and provides a clearer path for clinical application and transformation.

The application discloses a prefabricated assembling connecting structure of a bridge lower part, which comprises an operation module and a disaster-bearing module. The operation module comprises a bridge pier upper segment, a bridge pier lower segment, a ball seat and a plurality of supporting pieces. The ball seat comprises a concave ball seat fixed in the middle of the top surface of the bridge pier lower segment and a convex spherical cap fixed in the middle of the bottom surface of the bridge pier upper segment. The supporting pieces are arranged in the outer side of the ball seat in a circle. The disaster-bearing module comprises replaceable energy-consuming elements and limiting groove seats. The limiting groove seats are located on the two sides of the replaceable energy-consuming elements. The replaceable energy-consuming elements are horizontally installed in the circular through holes of the supporting pieces. The two end hemispherical force transmission keys of the replaceable energy-consuming elements correspondingly extend into the groove holes of the limiting groove seats. The prefabricated assembling connecting structure has the advantages of saving the construction period, being easy to maintain and replaceable after disaster, and rapidly repairing the structure performance to the original functional characteristic level.

The invention discloses a boron microcrystalline glass scintillator detector with high detection efficiency. The boron microcrystalline glass scintillator detector comprises a moderator, a neutron source, a shell, a boron-11 microcrystalline glass scintillator, a boron-10 microcrystalline glass scintillator, an optical coupling device, a photoelectric conversion device, a power supply module, a neutron / gamma discrimination circuit, a pre-amplifier, a main amplifier and a multichannel analyzer, the boron-11 glass ceramic scintillator and the boron-10 glass ceramic scintillator are arranged in the shell so as to receive the thermal neutrons moderated by the moderator and gamma rays generated along with the thermal neutrons; the optical coupling device and the photoelectric conversion device are used for collecting fluorescence of the boron-11 microcrystalline glass scintillator and the boron-10 microcrystalline glass scintillator, performing photoelectric conversion and outputting an electric signal, and the neutron / gamma discrimination circuit is electrically connected with the photoelectric conversion device so as to eliminate a gamma signal and output a neutron signal; the pre-amplifier, the main amplifier and the multichannel analyzer are connected in sequence, and are used for amplifying and forming the neutron signal and obtaining a neutron energy spectrum; the power supply module is used for supplying power to the detector.

The invention discloses a dust collector, which relates to the field of dust collectors, comprises a main body structure, and is characterized in that a primary separation structure, a secondary separation structure and a dust collection cup which are coaxial and detachable are arranged on the main body structure, the dust collection cup sleeves the outer side of the primary separation structure, and a cyclone separation cavity is formed between the dust collection cup and the primary separation structure; the secondary separation structure is provided with an air inlet channel, an inlet of the air inlet channel is detachably connected with an air inlet pipe, the air inlet structure is provided with an air inlet channel communicated with the air inlet channel, and an outlet of the air inlet channel is tangent to the cyclone separation cavity, so that dirty air enters the air inlet channel through the air inlet pipe and is tangentially discharged into the cyclone separation cavity through the air inlet pipe; the cyclone dust collector is compact in structure, uniform in airflow distribution, capable of avoiding bias flow, beneficial to quickly forming a stable cyclone flow field, improving dust separation efficiency, shortening an air inlet path, reducing airflow turning times and reducing wind resistance and energy loss, and the overall structure is convenient to disassemble, assemble, clean and maintain.

The embodiment of the invention discloses a portable selective limb perfusion device and a control method thereof. The method comprises the following steps: collecting multi-modal data in a perfusion device, wherein the multi-modal data comprises thermal imaging data, environmental parameters and physiological indexes; performing feature extraction on the multi-modal data, extracting image features by using a convolutional neural network, and processing numeric features through deconvolution operation; fusing the features through a self-attention mechanism to obtain fused features; performing state prediction based on the fusion features, and outputting a state deviation coefficient; calculating a parameter adjustment priority based on the expert weight and the state deviation coefficient; and generating a parameter adjustment instruction according to the priority, and realizing self-adaptive adjustment of infrared heating, sodium bicarbonate injection, temperature control, pump rotating speed, glucose / insulin injection and injection parameters. Through multi-modal data fusion and intelligent decision making, precise closed-loop control of the perfusion process is achieved, and the organ preservation quality and the transplantation success rate are remarkably improved.

The invention discloses a few-sample double-strategy image generation method and device based on a diffusion model and a medium, and provides a double-strategy collaborative image synthesis method for the core challenges of data scarcity and distribution offset in small sample learning. Diversified text prompts rich in fine-grained attributes and context variations are automatically generated through a large language model, the pre-training diffusion model is guided to efficiently explore intra-class variants in a semantic space, and diversified samples are generated; according to the visual anchoring fidelity strategy, visual embedding of real samples of a support set is extracted through a CLIP image encoder, multi-sample visual features are randomly aggregated to construct visual anchor representation, and the visual anchor representation and category text embedding are combined to guide the diffusion process. The two strategies serve complementary targets of expanding intra-class semantic boundaries and anchoring real data manifolds respectively, and the diversity and fidelity of synthetic data are synchronously improved on the premise that the generation model does not need to be finely adjusted.

The invention belongs to the technical field of plant grafting, and particularly relates to an early identification method for healing degree and affinity of fruit tree grafted rootstocks and scions. The early identification method comprises the following steps: grafting a scion to a stock, culturing for 10-20 days, inserting the base part of the stock into a fast green staining solution for staining, and judging the healing degree and affinity according to the staining condition. Different rootstock and scion combinations after grafting are dyed by using the dyeing agent fast green, the transportation difference of the fast green in the grafted rootstock and scion combinations is analyzed, the rootstock and scion healing degree and affinity can be rapidly judged, and technical and theoretical supports are provided for rapid rootstock breeding, rootstock and scion combination screening and rootstock application.

The application provides a composite retaining wall and a construction method thereof, and the composite retaining wall comprises a cantilever module, a gravity module and a drainage system, the cantilever module is a fabricated retaining wall, is assembled by using dense rib prefabricated plates, is embedded at the bottom of a cast-in-place foundation, and the cast-in-place foundation is poured at one time; the gravity module is formed by pouring solidified soil in layers, is a semi-rigid body, and is filled between the cantilever module and a slope surface; the drainage system comprises a drainage mat and a rigid waterproof board, the drainage mat is laid between the slope surface and the gravity module, the rigid waterproof board is vertically arranged between a slope foot and the cast-in-place foundation, the lower part is located below the bottom elevation of the cast-in-place foundation, and the upper part is located in a solidified soil pouring area. The cantilever module and the gravity module of the retaining wall are mutually engaged to form a space-embedded resistance system, have good supporting performance, and have the advantages of a cantilever retaining wall, a downward-inclined retaining wall and an upward-inclined retaining wall; and the drainage system has good water interception and drainage functions.