ANTI-MULTIDRUG RESISTANCE TAXANE ANTI-TUMOUR COMPOUND AND PREPARATION METHOD THEREOF

The present invention belongs to the pharmaceutical field, and relates to an anti-multidrug resistance taxane anti-tumour compound and a preparation method thereof, in particular relates to a taxane compound having a structure as shown by formula I, and a stereoisomer, solvate, crystal, prodrug or a pharmaceutically acceptable salt thereof, characterized in that the compound has a structure of formula I, wherein R1 and R2 are each independently selected from C1-C3 alkyl or C1-C3 haloalkyl, R6 is selected from C1-C4 alkyl, C2-C4 alkenyl, C1-C4 haloalkyl, C2-C4 haloalkenyl or optionally halophenyl, and R4 is selected from C1-C3 alkyloxy, halogen, hydrogen or -N3, provided that when R4 is hydrogen, R6 is not optionally halophenyl.

Reinforcing structure of wall-wall joint and nuclear power plant

The invention discloses a wall-wall joint reinforcing structure and a nuclear power plant comprising the same, the reinforcing structure comprises a joint core area, the joint core area is located in an intersection area of a first wall body and a second wall body and used for connecting the first wall body and the second wall body, the first wall body and the second wall body both adopt SC wall bodies, and the joint core area is located in the intersection area of the first wall body and the second wall body and used for connecting the first wall body and the second wall body. The joint core area comprises a concrete layer and an X-shaped batten plate unit, the concrete layer is poured in the joint core area, the X-shaped batten plate unit is embedded in the concrete layer, the X-shaped batten plate unit comprises a first supporting plate and a second supporting plate, the first supporting plate and the second supporting plate intersect, and the first supporting plate and the second supporting ...

铝材（桌面包边1）

Live-line work safety early warning method based on posture and wire recognition

The invention relates to a hot-line work safety early warning method based on posture and lead recognition, and the method comprises the steps: shooting pictures through a binocular structured light camera, respectively processing the pictures, building a deep learning model of a convolutional neural network to recognize the posture of a human body, recognizing each key joint of the human body, marking the key joints in a video picture, and carrying out the recognition of the human body. The positions of four limbs and five sense organs of a human body are described through connection of human-shaped postures, live wires are extracted and recognized through an algorithm, the human body postures and two-dimensional coordinates of key points of the wires are obtained, the depth of an image is obtained, and then a three-dimensional coordinate model of the wires and the human body is established; and then the human body posture is predicted in advance through the model, and the distance between ...

Concrete paving equipment for road construction

According to the concrete paving equipment for road construction, a discharging box is further arranged on the rear side of a heavy roller, two spiral shafts which are opposite in rotation direction and are coaxial are arranged in the discharging box, a gate plate is installed in a discharging pipeline between the two spiral shafts, a notch in one side of the gate plate extends into the discharging pipeline, and the gate plate extends into the discharging pipeline. The other side of the gate plate is located outside the discharging pipeline and fixedly connected with a push plate, the push plate is connected with the discharging pipeline through a spring, the spring enables the push plate to always keep extrusion contact with the driving part, and when the driving part rotates, the gate plate can be driven to slide on the cross section of the discharging pipeline in a reciprocating mode; driving chain wheels are installed at the two ends of a mandrel of the heavy roller, first driven chain ...

INTERFRAME REGISTRATION AND ADAPTIVE STEP SIZE-BASED NON-UNIFORMITY CORRECTION METHOD FOR INFRARED IMAGE

An interframe registration and adaptive step size-based non-uniformity correction method for an infrared image, comprising: first calculating a normalized cross-power spectrum of n-th and (n-1)-th original infrared images with the non-uniformity, and then calculating a horizontal relative displacement and a vertical relative displacement of the n-th and (n-1)-th original infrared images with the non-uniformity; calculating a space variance and a time variance of each pixel of the n-th original infrared image with the non-uniformity, using the obtained space variance and time variance to calculate an adaptive iterative step size of each pixel of the n-th original infrared image with the non-uniformity, and using the iterative step size to update a gain correction coefficient and a bias correction coefficient; finally, performing non-uniformity correction on the pixel in an overlapping area of the n-th and (n-1)-th original infrared images with the non-uniformity.

Clutch position control method and device, computer equipment and storage medium

The invention relates to a clutch position control method and device, computer equipment and a storage medium. The method comprises the steps that under the condition that a vehicle is started, the actual position and the target position of a clutch are obtained, the actual position and the target position are input into a linear controller, and an initial duty ratio is output; wherein the target position is determined according to the clutch position requirement during vehicle starting or gear shifting; determining a target electromagnetic valve according to the initial duty ratio; determining a target compensation duty ratio in a target electromagnetic valve compensation look-up table corresponding to the target electromagnetic valve by utilizing the absolute value of the initial duty ratio and the actual position; and controlling the clutch to reach the target position through the target compensation duty ratio. By adopting the method, the accuracy of clutch position control can be improved ...

WTB DATA RECORDER AND OPERATING METHOD THEREOF

Disclosed are a WTB data recorder and an operating method thereof. The WTB data recorder includes: an MCU, a WTB protocol controller, a WTB codec and a WTB drive which are connected sequentially via an internal bus in a bidirectional way, with the WTB drive being connected to an external WTB bus in a bidirectional way; a PC104 bus interface module, a PC104 CPU board card and a data storage device. One end of the PC104 bus interface module is connected to the MCU via the internal bus in a bidirectional way, and the other end thereof is connected to the PC104 CPU board card via the internal bus in a bidirectional way. The other end of the PC104 CPU board card is connected to the data storage device. The present invention has the advantage of being reliable, flexible, universal, and low in costs, etc.

Nondestructive testing method based on RPC cover plate failure load

The invention discloses a nondestructive testing method based on a damage load of an RPC cover plate. The nondestructive testing method comprises the following steps: acquiring an X-ray detection image of the RPC cover plate to be detected; an artificial intelligence technology based on deep learning is adopted, distribution information about the damage load implicit feature of the RPC cover plate in an X-ray detection image of the RPC cover plate is mined, and accurate expression of the damage load feature of the RPC cover plate is carried out based on the distribution information. In this way, the detection accuracy of the damage load value of the RPC cover plate can be improved, and therefore the accuracy of the load-displacement curve of the RPC cover plate is improved.

Control method, system and equipment of automobile display device, medium and automobile

The invention provides a control method of an automobile display device. The control method comprises the following steps that S1, automobile position information is obtained; s2, acquiring topographic information of a current position according to the position information of the automobile and a map; and S3, displaying the terrain information through a display device. Different signals are sent to the display device according to different geographic positions, and the display device correspondingly presents patterns conforming to the environment of the position where the display device is located, so that the whole vehicle has the sense of science and technology and entertainment, and the interactivity of the vehicle is enhanced.

Control method of hydraulic retarder system, hydraulic retarder system and vehicle

The invention relates to the technical field of vehicles, and particularly discloses a control method of a hydraulic retarder system, the hydraulic retarder system and a vehicle. According to the control method of the hydraulic retarder system, running parameters of the vehicle are obtained, and the actual demand braking torque of the vehicle is determined based on the running parameters of the vehicle; acquiring the temperature of hydraulic oil; correcting the actual required brake torque based on the temperature of the hydraulic oil to obtain a corrected brake torque; the maximum available braking torque of the hydraulic retarder is obtained; when the corrected brake torque is not larger than the maximum available brake torque, the hydraulic retarder outputs the corrected brake torque, the hydraulic retarder directly pumps hydraulic oil into the hydraulic retarder through an oil passing pump so as to reduce the vehicle speed and guarantee timely response, so that advanced control is not ...

Early warning information generation method and device, storage medium and electronic equipment

The invention relates to the field of safety early warning, and discloses an early warning information generation method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining a target early warning region corresponding to a target object; and obtaining the effective detection range of the detector. And dividing the target early warning area into a plurality of early warning sub-areas according to the target early warning area and the effective detection range. And generating early warning information in the corresponding early warning sub-region according to a detection signal of the detector. Therefore, the orientation of the early-warning sub-region where the early-warning information is located is highly consistent with the actual relative position of the obstacle and the vehicle body, so that a driver can more accurately and carefully judge the positions of the vehicle and the obstacle according to the early-warning information generated ...

DIAZAOXA HETEROCYCLIC SPIRO-DIONE PIPERAZINE ALKALOID DERIVATIVE HAVING ANTIVIRAL ACTIVITY AND PREPARATION METHOD THEREOF

Disclosed is a diazaoxa heterocyclic spiro-dione piperazine alkaloid derivative having an antiviral activity and a preparation method thereof. The compound is a compound of formula (I), has anti-RSV, HSV-1 and EV71 activities and has the following structure: wherein R1, R2, R3, R4 are each independently selected from optionally substituted H, alkyl, cycloalkyl, alkylacyl, alkoxyacyl, cycloalkylacyl, alkenyl, alkenylacyl, alkynyl, alkynylacyl, aryl, arylalkyl, arylacyl, heteroaryl, heteroarylalkyl, heteroarylacyl, saturated or unsaturated heterocyclyl, saturated or unsaturated heterocyclylalkyl, saturated or unsaturated heterocyclylacyl; n is 0 or 1; and a chemical bond (A) represents a bond (B) that points into the page or a bond (C) that points out of the page. "-----" indicates a single bond or does not exist, and when "-----" represents a single bond, R1 and R2 do not exist.

Anti-roll bar structure of double-wishbone suspension of FSAE racing car

The invention discloses an anti-roll bar structure of a double-wishbone suspension of an FSAE racing car, which comprises an anti-roll bar, and further comprises joints sleeved at two end parts of the anti-roll bar, and connecting rods connected with the joints, wherein the anti-roll rod is perpendicular to the joints at the two ends, and limiting mechanisms are arranged between the anti-roll rod and the joints; the connecting rod is perpendicular to the joint, and the position of the connecting rod can be adjusted in the vertical direction of the joint. According to the anti-roll bar, the mechanical performance and the durability of an existing structure are improved, the stress concentration phenomenon in the working process is improved, multiple relative positions are adjustable, and the use, installation and positioning of the anti-roll bar are facilitated. Through the arrangement of joint sleeves, the joint is limited, the transverse position of the anti-roll bar is determined through ...

RECTIFICATION TRACTION APPARATUS AND DIESEL MULTIPLE UNITS

A rectification traction apparatus and diesel multiple units with the rectification traction apparatus equipped. The rectification traction apparatus comprises a box body (1), a rectifier module (2) and an inverter module (3). The box body (1) is used for installing on the diesel multiple units. The rectifier module (2) is arranged inside the box body (1), and is used for receiving an alternating current output by a generator, and outputting an intermediate direct current. The inverter module (3) is arranged inside the box body (1), and is used for inverting the intermediate direct current to obtain a drive power, so as to provide the drive power to a drive motor. The solution uses the rectification traction apparatus to perform rectification and inversion on an alternating current of an electric motor powered by a diesel to obtain the drive power required by the drive motor of the diesel multiple units. Therefore, a catenary does not need to be constructed, which saves costs.

Test method of automobile central controller, upper computer, computer equipment and storage medium

The invention provides a test method of an automobile central controller, an upper computer, computer equipment and a storage medium, relates to the technical field of test, and aims to improve the test efficiency of the automobile central controller and reduce the test cost at the same time. The method mainly comprises the steps that under the condition that it is detected that an automobile central controller is located in an upper computer testing area, connection with the automobile central controller is established through a controller area network (CAN) card; a test instruction and/or a query instruction are/is sent to the automobile center controller according to a configuration table corresponding to the automobile center controller, the configuration table is downloaded from the automobile remote service provider TSP, and the test instruction and the query instruction of the automobile type corresponding to the automobile center controller are stored in the configuration table; ...

Nanoparticles for multi-strategy synergistic treatment of breast cancer as well as preparation method and application of nanoparticles

The invention discloses a nanoparticle for multi-strategy synergistic treatment of breast cancer as well as a preparation method and application of the nanoparticle. According to the nanoparticle, a polydopamine nanoparticle obtained by auto-polymerization of dopamine hydrochloride under an alkaline condition is used as a photo-thermal core, and L-arginine is grafted on the surface of the polydopamine nanoparticle under the alkaline condition to be used as a nitric oxide donor. Folic acid bovine serum albumin is grafted on the surface of the polydopamine nanoparticle through condensation reaction of carboxyl and amino to serve as a target head and a stabilizer. Methylene blue is loaded on the surfaces of the polydopamine nanoparticles grafted with L arginine and folic acid bovine serum albumin through electrostatic adsorption to serve as a photosensitizer. The nanoparticles have photo-thermal, photodynamic and nitric oxide gas generation functions and breast cancer targeting effects. The ...

Multi-station machining method for shaft parts

The multi-station machining method for the shaft workpieces comprises the steps that the shaft workpieces are placed on the workpiece platform, the pneumatic control device drives the rotary air cylinder to act according to the actual machining situation so as to drive the feeding overturning piece to rotate to convey the workpieces to the obliquely-arranged feeding roller path one by one, and the workpieces automatically roll to the clamping jaw on the clamping jaw mechanism; each clamping jaw mechanism comprises a centripetal air cylinder connected with a pneumatic control device, the centripetal air cylinders are connected with a pair of opposite clamping jaws, the pair of clamping jaws are driven by the centripetal air cylinders to move oppositely, clamp and loosen workpieces, and the eight clamping jaw mechanisms are evenly distributed on the rotary disc along the circumference. A feeding station, a first machining station, a second machining station, a third machining station, a fourth ...

PORTABLE WTB DATA ANALYSIS CARD AND WORKING METHOD THEREOF

Disclosed are a portable WTB data analysis card and a working method thereof. The portable WTB data analysis card comprises: an MCU, a WTB protocol controller, a WTB codec, and a WTB drive that are connected through an internal bus in a two-way manner sequentially, the WTB drive being connected to an external TWB bus in a two-way manner; and a dual-port RAM, an FPGA, and a PCMCIA interface circuit, one end of the dual-port RAM being connected to the MCU through the internal bus in a two-way manner, the other end of the dual-port RAM being connected to the FPGA through the internal bus in a two-way manner, one end of the PCMCIA interface circuit being connected to the FPGA, and the other end of the PCMCIA interface circuit being connected to an external computer. The present invention has advantages of reliability, flexibility, universality, and low cost.

External pressure type family expenses water purifier

... 本实用新型公开了种外压式家用净水器；所述净水器包括前封闭盖(2)、后封闭盖(11)、净水器主体(13)、过滤模块；所述净水器主体(13)为筒状，其下端设置接管(12)，所述前封闭盖(2)连接在净水器主体(13)的左端，后封闭盖(11)连接在净水器主体(13)的右端；所述过滤模块设置在净水器主体(13)的内部，过滤模块分为左部过滤模块、中部过滤模块和右部过滤模块。该净水器结构简单，安装方便，不仅净水效果好，而且节省了设备所占的空间，满足家庭日常生活的实际需求。 ...

Control method of transmission intermediate shaft brake, vehicle and storage medium

The invention discloses a control method of a transmission intermediate shaft brake, a vehicle and a storage medium. The method comprises starting the intermediate shaft brake; a target rotating speed difference estimated value at the braking starting moment and a first brake basic characteristic parameter array are obtained; obtaining a stable braking demand rotating speed difference array, a theoretical stable braking demand time array and theoretical total demand braking time; total required braking target time under different upshift types is determined; and the difference value between the total demand braking target time and the theoretical total demand braking time is obtained, the theoretical total demand braking time corresponding to the minimum difference value is selected, and the actual valve opening time of an air inlet valve of the intermediate shaft brake is determined according to the theoretical total demand braking time. The actual valve opening time of the intermediate ...

FEATURE FUSION AND DENSE CONNECTION BASED INFRARED PLANE TARGET DETECTION METHOD

An infrared plane target detection method based on feature fusion and dense connection, comprising: constructing an infrared image dataset containing a target to be recognized, calibrating the position and kind of said target to be recognized in the infrared image dataset, and obtaining an original known label image; dividing the infrared image dataset into a training set and a verification set; performing image enhancement preprocessing on images in the training set and performing feature extraction and feature fusion, obtaining a classification result and a bounding box through a regression network; performing a loss function calculation on the classification result and the bounding box with the original known label image, and updating parameter values of convolutional neural network (CNN); repeating iteration update on the CNN parameters until the error is small enough or the number of iterations reaches a set upper limit; and processing images in the verification set through the trained ...

INFRARED IMAGE NON-UNIFORMITY CORRECTION METHOD EMPLOYING GUIDED FILTERING AND HIGH-PASS FILTERING

Disclosed is an infrared image non-uniformity correction method employing guided filtering and high-pass filtering. The method comprises: setting a high-frequency component of a first image of a non-uniform original image sequence as a first fixed pattern noise f1; sequentially loading an Nth image in the original non-uniform image sequence as a current image, determining a difference between the current image and an(N-1)th image to obtain an (N-1)th difference image, and obtaining, according to the (N-1)th difference image, a relative change magnitude of each pixel of the (N-1)th image; and performing high-pass filtering in conjunction with the high-frequency component of the current image and the change magnitude of each pixel of the (N-1)th difference image to obtain an nth fixed pattern noise fn, and performing non-uniformity correction on the current image according to the nth fixed pattern noise fn to obtain a correction result of the current image, where N ≥ 2, and n ≥ 2. The invention ...

METHOD FOR SYNTHESIZING SAPONIN

The present invention belongs to the field of organic synthesis, relates to a method for synthesizing a saponin, and in particular, to a method for constructing a glycosidic bond in a saponin, and comprises the following steps: directly reacting an excessive amount of aldose or ketose with aglycone in a suitable organic solvent at 30 °C to a reflux temperature and with the presence of an acid catalyst, to obtain a target product saponin.

RAS mutant epitope peptide and T cell receptor for recognizing RAS mutant

Relates to the field of immunology and tumor treatment. Specifically, the invention relates to a Ras G12V mutant epitope peptide, an antigen presenting cell for expressing the epitope peptide, a tumor vaccine containing the epitope peptide and the antigen presenting cell, and application of the Ras G12V mutant epitope peptide and the antigen presenting cell to prevention or treatment of tumors with RAS G12V mutation. The invention further relates to a T cell receptor (TCR) capable of specifically recognizing the Ras G12V mutant, a conjugate and a fusion protein containing the TCR, an immune cell expressing the TCR, a T cell medicine containing the TCR, and application of the T cell receptor and the fusion protein to prevention or treatment of tumors with RAS G12V mutations.

DETECTION AND POSITIONING METHOD FOR TRAIN WATER INJECTION PORT

A detection and positioning method for a train water injection port, the method involving: collecting a train water injection port video image, and carrying out threshold segmentation on the train water injection port video image to obtain a binarized train water injection port video image; processing the binarized train water injection port video image and matching with the train water injection port template image, detecting the position of the water injection port in the train water injection port video image, and comparing same with a preset position range where the water injection port is located; and if the two match, transmitting a matching valid signal to a mechanical device control module so as to control the mechanical device to stop moving and control the starting and stopping of water injection. By means of the train water injection port detection and positioning method, the automatic detection and identification of a train water injection port can be realized, and a stopped ...

Cleaning method suitable for heat exchanger for semiconductor grade polycrystalline silicon production

The invention relates to the technical field of polycrystalline silicon production, in particular to a cleaning method suitable for a heat exchanger for semiconductor grade polycrystalline silicon production, which comprises the following steps: S1, connecting a heat exchanger to be cleaned; s2, desalted water is adopted for water washing; s3, uniformly mixing a sodium hydroxide solution, a surfactant and an anti-foaming agent, and degreasing the heat exchanger; s4, the heat exchanger is washed with desalted water; s5, the heat exchanger is subjected to acid pickling through a nitric acid solution and a hydrofluoric acid solution; s6, the heat exchanger is washed with desalted water; s7, passivating the heat exchanger with a salpeter solution with the mass fraction of 18%; s8, desalted water is adopted for water washing; s9, the heat exchanger is cleaned in a flushing mode that the heat exchanger is filled with high-purity water; and S10, the heat exchanger is dried through nitrogen. The ...

Full-automatic shoe brushing machine and use method thereof

The invention discloses a full-automatic shoe brushing machine and a using method thereof. The full-automatic shoe brushing machine comprises an outer cylinder, an inner cylinder is rotationally connected in the outer cylinder, an outer brush is detachably connected in the inner cylinder, the outer cylinder is further rotationally connected with a first rotating shaft, and the first rotating shaft is fixedly connected with the inner cylinder; the outer cylinder is further rotationally connected with a second rotating shaft, the second rotating shaft is fixedly sleeved with a plurality of driving missing gears with different diameters, the driving missing gears are arranged in a staggered mode, the first rotating shaft is fixedly sleeved with driven gears meshed with the driving missing gears, the second rotating shaft is connected with a driving mechanism, and the driving mechanism is connected with a controller. The device is convenient to operate, high in automation degree, capable of ...

End-to-end network communication method, system and device

The invention discloses an end-to-end network communication method, system and device. The method comprises the following steps: querying an access point configuration file; based on the existence of the access point configuration file, entering an initialization process of a Station mode so as to access a local area network through the router, receiving a network message sent by the mobile terminal through the router after the initialization is completed, and configuring a transmission parameter for data interaction with the mobile terminal according to the network message; and entering an initialization process of an AP mode based on the absence of the access point configuration file so as to allow the mobile terminal to access as Station, receiving a network message sent by the mobile terminal after initialization is completed, and configuring a transmission parameter for data interaction with the mobile terminal according to the network message. According to the invention, end-to-end ...

Data pushing method and system

The invention discloses a data pushing method and system. The method comprises the steps that according to the network state and navigation information of a vehicle, the environment information of the environment where the vehicle is located is confirmed, and the environment information is used for representing whether the vehicle is driven in the field environment or not; in response to the environmental information that the vehicle runs in the field environment, acquiring a first image through an unmanned aerial vehicle flying according to the flight rule, and acquiring a second image through a vehicle-mounted camera mounted on the vehicle; first prompt information is generated according to the first image and the second image, the first prompt information comprises at least one of a surrounding environment map of the vehicle and danger information, the danger information comprises at least one of a dangerous target and the distance between the vehicle and the dangerous target, and the ...

Method and device for acquiring blood relationship data among heterogeneous data

The invention provides a method and device for obtaining blood relationship data between heterogeneous data, and the method comprises the steps: collecting offline heterogeneous data, and collecting online heterogeneous data based on a heterogeneous data extraction technology of metadata; the method comprises the following steps of: performing distributed metadata acquisition on full-life-cycle data of various data in heterogeneous data by adopting each sub-node in a distributed system, and converging the distributed metadata to a main node in the distributed system; and enabling the main node to perform deduplication fusion operation on the distributed metadata to obtain global blood relationship data corresponding to the full-life-cycle data of various types of data in the heterogeneous data. According to the method and the device, the heterogeneous data can be accurately acquired, the full life cycle data of various data of the heterogeneous data in the distributed system can be subjected ...

Stone crushing device for building construction

The invention discloses a stone crushing device for building construction, and relates to the technical field of building construction, the stone crushing device comprises a rack, the rack comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a first supporting frame, and the end, away from the bottom plate, of the first supporting frame is fixedly connected with a placement box; a feeding port is fixedly connected to the upper surface of the placement box and penetrates through the placement box, a first partition plate is fixedly connected to the side surface of the placement box, a second partition plate is fixedly connected to the side, away from the first partition plate, of the side surface of the placement box, and a second supporting frame is fixedly connected to the outer surface of the second partition plate; and the end, away from the second partition plate, of the second supporting frame is fixedly connected with a first fixing plate and a ...

Control method and device of intermediate shaft brake and electronic equipment

The invention relates to a control method and device of an intermediate shaft brake, electronic equipment, a storage medium and a computer program product. The method comprises the steps that an intermediate shaft electromagnetic valve is opened, and intermediate shaft braking is conducted; the real-time braking duration in the intermediate shaft braking process is obtained, wherein the real-time braking duration is the duration of the intermediate shaft electromagnetic valve from opening to the current braking process; the braking demand time length is obtained, and the real-time braking time length is compared with the braking demand time length; if the real-time braking duration is smaller than the braking demand duration, whether intermediate shaft braking releasing is carried out or not is determined according to a nonlinear braking strategy; and if the real-time braking duration is greater than or equal to the braking demand duration, determining whether to release the braking of ...

Mass center calculation method for knife edge method MTF (Modulation Transfer Function) measurement

The invention discloses a centroid calculation method for knife edge method MTF (Modulation Transfer Function) measurement, centroid calculation adopts an iterative Gaussian weighting method, a weighting function adopts a Gaussian function, and the center position and width of the Gaussian function are adaptively changed; the knife edge is a straight line, and when the position of the mass center of the difference image is calculated line by line, the central position and the width of the weighting function after iteration of the previous line serve as the iteration initial value of the next line. According to the method, the iterative weighting method is adopted, the calculation precision of the mass center of the knife edge aberration image can be effectively improved, and therefore the MTF measurement precision is improved; the parameters in the method can be adaptively corrected, and the method can be suitable for MTF measurement of various photoelectric systems to be measured.

Graphite powder/starch chiral selector, glassy carbon electrode, preparation method and application

The invention discloses a graphite powder/starch chiral selective agent and a preparation method and application thereof.The graphite powder/starch chiral selective agent is prepared by taking graphite powder as a carrier and forming a surface structure capable of recognizing chiral groups by adsorbing soluble starch, and the preparation method of the graphite powder/starch chiral selective agent comprises the steps that the soluble starch and nano graphite powder are dissolved in an ethanol solution; performing ultrasonic treatment to obtain a graphite powder/starch chiral selective agent; the graphite powder/starch chiral selective agent can be applied to chiral recognition of tryptophan after being modified on a glassy carbon electrode, the recognition capability of the modified glassy carbon electrode on D-Trp is higher than that of the modified glassy carbon electrode on L-Trp, and the sensitivity and recognition effect of the sensor are further improved by optimizing recognition conditions ...

Anti-blocking stone crushing equipment for construction

The anti-blocking stone crushing equipment for construction relates to the technical field of construction equipment and comprises a machine body, a servo motor is fixedly connected to the position, close to the center, of the outer surface of the machine body, and a crushing plate is slidably connected to the position, close to the edge, of the outer surface of a foundation trench; crushing teeth are fixedly connected to the inner surface of the base groove and the outer surface of the crushing plate, rolling wheels are in rolling connection to the bottoms of the supporting jacking parts, the grinding assembly is provided with a driving roller which is rotationally connected to the inner surface of the machine body and is close to the center, and an eccentric part is fixedly connected to the outer surface of the driving roller; a groove is formed in the side, away from the driving roller, of the outer surface of the eccentric part, a cylindrical guide rod is fixedly connected into the ...

Energy -conserving cam of electromagnetism

... 本实用新型涉及机械运动技术领域，具体涉及种凸轮。电磁节能凸轮，包括电动机，电动机的转轴上套设有凸轮外壳，凸轮外壳内设有金属重块。凸轮外壳的顶部内壁上设有电磁铁，电磁铁位于金属重块上方，电磁铁通过导线连接电极。由于采用上述技术方案，本实用新型通过电磁铁吸附金属重块，可以大大的减少启动需要的能量，从而减少能量的消耗，达到节能的目的。 ...

Road-rail conversion device and road-rail car with same

The invention provides a highway-railway conversion device and a highway-railway car with the highway-railway conversion device. The highway-railway conversion device comprises a railway walking frame, a highway-railway car body and a highway-railway car body. The railway walking frame comprises a base and a wheel pair. The mounting frame can be connected with a vehicle body of the rail-road vehicle; the two ends of the telescopic piece are connected with the mounting frame and the railway walking frame correspondingly. The telescopic piece can drive the railway walking frame to ascend and descend relative to the mounting frame. The railway walking frame further comprises a mandrel, a radial bearing and a thrust bearing, the axis of the mandrel is arranged in the vertical direction, the lower end of the telescopic piece is connected with the upper end of the mandrel, an inner ring of the radial bearing and an inner ring of the thrust bearing are both connected with the mandrel, and the ...

High-frequency switching power supply device for power plant

The invention discloses a high-frequency switching power supply device for a power plant, and relates to the field of high-frequency switching power supplies for the power plant, the high-frequency switching power supply device comprises a box body and a switching power supply element, the middle part of the box body is provided with a concentric-square-shaped cabin, the bottom end of the middle part of the box body is provided with a cross-flow fan at a position corresponding to the concentric-square-shaped cabin, and two sides in the box body are provided with inner guide grooves; outer guide grooves are formed in the two sides in the concentric-square-shaped bin, the outer guide grooves and the inner guide grooves are communicated with each other and filled with heat conduction fluid media, the outer guide grooves are connected with a plurality of sets of outer fins parallel to the air outlet direction of the cross-flow fan in the concentric-square-shaped bin, and the inner guide grooves ...

Briquetting coke for lead-zinc smelting and preparation method thereof

The invention discloses briquetting coke for lead-zinc smelting and a preparation method of the briquetting coke, and relates to the technical field of coke for smelting. The preparation method provided by the invention is low in raw material cost, the used equipment is common equipment of a smelting plant, the process flow can be completed without large-scale technical transformation, the operation steps are simple, the equipment utilization rate is high, the content of zinc and lead in the front bed slag of the closed blast furnace generated by smelting the product obtained by the preparation method is within the range of 8-9%, and the production cost is low. The effect is the same as the original coke use effect; the consumption of the pulverized coal used in the treatment process of the slag is basically consistent, which proves that the briquetted coke prepared by the method has the same performance as the original coke and can be equivalently replaced; therefore, when the product ...

Transition metal selenide/carbon hollow core-shell material as well as preparation method and application thereof

The invention provides a preparation method of a transition metal selenide/carbon hollow core-shell material, which comprises the following steps: by taking prepared nano calcium carbonate microspheres as a template and polydopamine as a carbon source, preparing hollow porous carbon spheres with a porous shell layer by a hard template method, and then preparing the transition metal selenide/carbon hollow core-shell material by taking the hollow porous carbon spheres as a nano reactor. A methanol solution of transition metal salt and dimethylimidazole react in the hollow porous carbon spheres, a metal organic framework material is obtained through confinement growth by a hydrothermal method, then calcination is carried out, a selenylation reaction is carried out, and the transition metal selenide/carbon hollow core-shell material with a hollow structure is prepared. According to the present invention, the internal gap expands the electrochemical interface and accommodates the large volume ...

Double background noise mutation removal method based on blood circulating tumor DNA

The invention belongs to the technical field of signal generation analysis, and particularly relates to a double background noise mutation removal method based on blood circulating tumor DNA and application. Based on double-end-fixed single molecular tag (UMI) library building and high-depth sequencing results of the blood circulating tumor DNA, through quadruple correction of double-end-fixed UMI, the double background noise mutation removal method based on the blood circulating tumor DNA is obtained; the ctDNA background noise mutation is removed through the combination of a double background noise mutation combined filtering model and clonal hematopoietic mutation filtering, so that the false positive of ctDNA mutation detection is reduced, and the accuracy of ctDNA signal with extremely low content in MRD and low-frequency ctDNA mutation detection in liquid biopsy is ensured.

Nondestructive testing method and system for thickness of steel fiber RPC cover plate

The invention discloses a nondestructive testing method and system for the thickness of a steel fiber RPC cover plate. The method comprises the following steps: firstly, carrying out Grubm angle and field transformation on an obtained ultrasonic transmitting signal and an obtained ultrasonic echo signal to obtain an ultrasonic transmitting Grubm angle and field image and an ultrasonic echo Grubm angle and field image; carrying out image partitioning processing on the ultrasonic wave emission Gramb angle and field image and the ultrasonic wave echo Gramb angle and field image, and then obtaining an ultrasonic wave emission image feature vector and an ultrasonic wave echo image feature vector through a ViT model containing an embedded layer; and enabling a difference feature vector obtained by calculating the ultrasonic emission image feature vector and the ultrasonic echo image feature vector to pass through a decoder to obtain a decoding value for representing a thickness value. In this ...

Method for producing selenium-rich chemical fertilizer additive by utilizing selenium-containing acid mud

The invention discloses a method for producing a selenium-rich chemical fertilizer additive by utilizing selenium-containing acid mud, and relates to the technical field of comprehensive utilization of acid mud. The method comprises the following steps: adding calcium into mercury-containing selenic acid mud, roasting to recover mercury, and carrying out slurrying, alkali liquor leaching, pH value adjustment, neutralization and impurity removal, and sodium selenite solution evaporation and concentration on the roasting slag to produce a sodium selenite solution as a selenium-rich chemical fertilizer additive. The method has the characteristics of short process flow, simple equipment, easiness in operation and no environmental pollution.

Electromagnetic valve control method and device, computer equipment, medium and program product

The invention relates to an electromagnetic valve control method and device, computer equipment, a medium and a program product, displacement data of a sliding gear sleeve and air pressure data of a gear shifting air cylinder are obtained, so that a forward air inlet electromagnetic valve is controlled according to the displacement data, and a reverse air inlet electromagnetic valve is controlled according to the air pressure data; synchronous control over the forward air inlet process and the reverse air inlet process of the gear shifting air cylinder can be achieved, the situation that the gear shifting force is unstable due to one-way control over a forward electromagnetic valve is avoided, the gear shifting force can be stabilized within a reasonable range, and the failure situation that a shifting fork is abnormally abraded or fractured due to the fact that the gear shifting force is too large is avoided.

Information pushing method, information pushing device and vehicle

The invention discloses an information pushing method, an information pushing device and a vehicle, and relates to the field of intelligent driving. The method comprises the following steps: acquiring a road state of a driving road on which a vehicle is currently driven by using unmanned aerial vehicle equipment; in response to the condition that the road state is that the driving road is congested, acquiring road section information of congested road sections sent by roadside equipment on two sides of the driving road by using unmanned aerial vehicle equipment; determining a target speed interval based on the second driving speed of the vehicle, the road section information and the second length; and in response to the target speed interval meeting a preset condition, first driving information is pushed to the user, the preset condition is used for representing that the vehicle normally drives over the congested road section according to the target speed interval, and the first driving ...

Equipment and method for removing bismuth element in lead electrolysis production

The invention discloses equipment and a method for removing bismuth in lead electrolysis production. The equipment comprises an electrolytic bath, a water washing tank and a low tank, a liquid outlet of the washing water tank is communicated with the electrolytic tank, a liquid outlet of the electrolytic tank is communicated with the washing water tank, and liquid in the electrolytic tank and the washing water tank circularly flows; and the lower tank is communicated with a liquid outlet of the water washing tank. The removal equipment disclosed by the invention is simple in structure and convenient to operate, and the bismuth element in the washing water can be effectively removed.

Three-dimensional dynamic modeling method for digital twinning of coal-fired power plant auxiliary equipment

The invention relates to the technical field of real-time 3D modeling, in particular to a three-dimensional dynamic modeling method for digital twinning of coal-fired power plant auxiliary equipment. According to the method, ultrasonic waves are transmitted to penetrate and scan the auxiliary equipment to be researched, and on the basis of obtaining the surface and internal structure feature sizes of the auxiliary equipment, virtual three-dimensional comprehensive modeling of the auxiliary equipment is realized by establishing a coordinate system and obtaining and converting corresponding coordinate data. Meanwhile, aiming at the actual operation process of the auxiliary equipment, the tracer particles are adsorbed on an internal dynamic structure of the auxiliary equipment through a self-designed and built system, a corresponding sub-real-time model is built on the basis of tracking particle space coordinates, and finally, the sub-real-time model is fused with a virtual three-dimensional ...

Low power output driver for power terminals in memory interface applications

Disclosed is an output driver, which may include: a delay generator configured to generate a plurality of delayed signals in response to an input signal; a pre-driver configured to generate a plurality of control signals based on the plurality of shifted delay signals; and a main driver configured to be coupled to the channel having an asymmetric termination and to provide an output signal at a node of the main driver based on a response to the plurality of control signals, where the plurality of control signals provide an asymmetric response in the main driver in response to the asymmetric termination. In some embodiments, an asymmetric switching sequence may be included. In some embodiments, a pull-up diode may be employed. In some embodiments, the output driver is arranged to operate with a core voltage and a core transistor.

Method, device and equipment for determining liquid filling rate state of hydraulic retarder and medium

The embodiment of the invention discloses a method, device and equipment for determining the liquid filling rate state of a hydraulic retarder and a medium. The method comprises the steps that when it is detected that a hydraulic retarder of a target vehicle is in a working state, current vehicle information of the target vehicle is determined; target braking torque of the hydraulic retarder is determined according to the current vehicle information, wherein the target braking torque comprises current braking torque and rated braking torque; the braking torque deviation rate of the hydraulic retarder is determined according to the target braking torque; and the current liquid filling rate state of the hydraulic retarder is determined according to the braking torque deviation rate. According to the technical scheme, the liquid filling rate condition of the hydraulic retarder in the actual driving process of the vehicle can be accurately recognized, the practicability is high, and the actual ...

Daylighting roof glass plate intersecting edge buckle type auxiliary frame installation system

According to the daylighting roof glass plate intersecting edge buckle type auxiliary frame installation system, mechanical fixing installation is used for wave crest nodes of a daylighting roof, buckle installation is used for wave trough nodes of the daylighting roof, and the problems that in the prior art, due to the fact that installation forms of glass plates forming the daylighting roof are diversified, the universality of a node bottom frame is poor, and the installation cost is low are solved. The construction is inconvenient and the difficulty is high; according to the invention, an optimized solution is provided from the aspects of a structural integral forming scheme and a splicing adjustment detail structure, the difficulty of field operation is fully reduced while better engineering economy is realized, a daylighting roof construction scheme for preventing the glass plate from moving without mounting an L-shaped corner connector is realized, and the construction efficiency ...

Antibodies that specifically bind to glycosylated CEACAM5

The invention provides an antibody specifically combined with glycosylated CEACAM5, and preparation and application of a humanized antibody of the antibody.