Complementary reading acquisition scheme execution method of concentrator

The invention discloses a method for executing a complementary reading acquisition scheme of a concentrator, which comprises the following steps of: S1, before each task is executed, screening the type and the number of tasks needing to be executed in the current time, and judging the current time accords with the execution time period of which task scheme; s2, for the scheme tasks conforming to the current time period, sorting the scheme tasks according to task priorities, and executing the task with the highest priority; s3, checking whether task execution is completed at the current time or not; and S4, if there is no normal reading task at present and the concentrator autonomously produces a supplementary reading task, executing a data driving algorithm, and producing a data-driven single-point supplementary reading task. According to the invention, the execution of the acquisition scheme of the concentrator is optimized from three aspects of the complementary reading task generation ...

Waste liquid drying system

The invention provides a waste liquid drying system, comprising a waste liquid coating mechanism, a circulating surface mechanism, a recovery mechanism and a heating mechanism. The circulating surface mechanism of a large drum is coated with a waste liquid via the drum type coating mechanism; the heating mechanism such as a conduction oil radiating tube assembly of the large drum type circulating surface mechanism is used for short-distance baking of the circulating surface mechanism coated with the waste liquid before recovery; and before a coating zone returns to a start point, dried residual substances are separated and recovered from the circulating surface mechanism by using the recovery mechanism like a scraper plate and brush and are then bagged. The waste liquid drying system has simple structure and low cost and can effectively separate heavy metals, toxic substances and the like in sewage; and in particular, the waste liquid drying system can conveniently remove heavy metals and ...

New energy power generation output tracking load measurement method based on copula function and capacity credibility

The invention discloses a new energy power generation output tracking load measurement method based on a copula function and capacity credibility. The method comprises the following steps: acquiring original data of outputs and loads of a plurality of wind power plants; calculating the load borne by each wind power plant by utilizing the definition of the capacity credibility, and further obtaining the generated output of the wind power plant and the fluctuation quantity of the load by subtracting the load from the load; obtaining an edge distribution function by using a semi-parametric method; drawing a binary frequency histogram according to the edge distribution function to obtain all possible copula function models; introducing an experience copula function to evaluate the advantages and disadvantages of the function model; calculating a correlation coefficient of the wind power plant for tracking the dynamic change of the load fluctuation, and obtaining an unknown parameter of a copula ...

Lagerstroemia caudate microsatellite DNA molecular markers and application thereof

The invention provides lagerstroemia caudate microsatellite DNA molecular markers which comprise 15 lagerstroemia caudate microsatellite loci. The invention further provides a method for screening the lagerstroemia caudate microsatellite DNA molecular markers, and an application of the method in researching lagerstroemia caudate genetic diversity. In addition, the invention further provides primer sequences for amplifying 15 lagerstroemia caudate microsatellite loci and an amplification method thereof and establishes a lagerstroemia caudate microsatellite DNA molecular marker technical system for lagerstroemia caudate genetic diversity analysis, fingerprint establishment and molecular-marker-assisted breeding, thus the DNA molecular markers are reliable and effective and have good repeatability.

Method for designing, forging and heat-treating ultrahigh-strength aluminum alloy die forging part

The invention relates to a method for designing, forging and heat-treating an ultrahigh-strength aluminum alloy die forging part. The method comprises the steps of designing and manufacturing of a die forging part mathematical model and a die, molding and forging, heat treatment, physical and chemical detection and machining. The method solves the problems that cold forging deformation is not uniform and the mechanical properties of different portions of the die forging part are different due to the fact that the section dimensions of the die forging part are different, it is guaranteed that overall die forging part cold deformation is uniform and the mechanical properties of different dissection portions of the die forging part are consistent by designing the sections of the die forging part with the method, and warping of the die forging part during machining is avoided.

Tread grinding method and device for tire pattern deep groove and performance correlation

The invention belongs to the technical field of tire manufacturing, and particularly relates to a tire tread polishing method and device for tire pattern deep groove and performance correlation. The method comprises the following steps: reserving maximum deep grooves in two smooth tire crowns, and carving patterns on the surfaces of the tires; the tire with the engraved patterns is assembled, inflated and parked and then placed on a bearing of a double-station tread grinding machine, and loads are loaded; the abrasion degree of one tread pattern deep groove is set to be reduced by 1 mm every time, the abrasion degree of the other tread pattern deep groove is set to be reduced by 0.5 mm for the first time, and the abrasion degree is reduced by 1 mm every time from the second time to the end of grinding; and when the depths of the two tire patterns are reduced to be less than half of the initial depth, grinding is stopped. According to the method, tires with different pattern groove depths ...

Medical equipment fault detection method based on multiple indexes

The invention relates to the field of medical equipment fault detection methods, in particular to a multi-index-based medical equipment fault detection method, which comprises the following steps of: establishing an integral output observation signal model of medical equipment by taking the medical equipment as an integral system; the method comprises the following steps: firstly, determining each state characteristic interval based on one medical device, then measuring and calculating the recognition rate of each parameter under the same fault by using a plurality of medical devices of the same type under the same fault, and matching a weight value; calculating the total fault recognition rate of each fault state according to the single fault index recognition rate and the weight value; adjusting the total fault recognition rate by adjusting the weight value or the fault feature interval until the setting is met; and when a set condition is met, establishing a fault rule base corresponding ...

Energy-saving building fabricated wall and assembly method

The invention belongs to the technical field of building assembly, and discloses an energy-saving building assembly type wall and an assembly method.The energy-saving building assembly type wall comprises an assembly assembly, and the assembly assembly comprises a first assembly part, a second assembly part, a third assembly part and a fourth assembly part which are sequentially arranged side by side in the horizontal direction; the side, away from the fourth assembly part, of the top end of the first assembly part, the side, away from the fourth assembly part, of the top end of the second assembly part, the side, away from the fourth assembly part, of the top end of the third assembly part and the side, close to the first assembly part, of the top end of the fourth assembly part are rotationally connected with top sealing parts correspondingly. According to the invention, building of the building walls is completed by adopting the assembly components through an assembly method, the first ...

Telescopic coupling support and gob-side entry protection method for steeply inclined and inclined coal seam

According to the telescopic coupling supporting method, a roadway protection support is included, the roadway protection support comprises a cross beam and a vertical rod, the vertical rod comprises a first supporting rod and a first telescopic joint, a first connecting groove is formed in one side of the first supporting rod, and one side of the first telescopic joint is connected into the first connecting groove in a matched mode; the first supporting rod and the first telescopic joint are connected and fixed through a first clamp. The first clamp comprises a first fixing plate and a second fixing plate, a pressing groove matched with the first telescopic joint is formed in the middle of the second fixing plate, and the first fixing plate is connected with the second fixing plate through a bolt; the cross beams are similar to the vertical rods in structure, connecting lugs are arranged on the two sides of the vertical rods, and connecting plates are connected to the connecting lugs through ...

Chain-tensioning device of scraper conveyor

The invention discloses a safe and high-efficiency chain-tensioning device of a scraper conveyor, which comprises a manual hydraulic jack, a steel wire rope and a connector, wherein a middle section of the steel wire rope is fixed at the head part of the hydraulic jack; two ends of the steel wire rope are sleeved on connecting pins of the connector which has a U-shaped structure; and the connecting pin is inserted into two side plates of the connector and is movably matched with the connector. The chain-tensioning device comprises the manual hydraulic jack, the steel wire rope and the connector; the middle section of the steel wire rope is fixed at the head part of the hydraulic jack; and two ends of the steel wire rope are sleeved on the connecting pin of the connector. Therefore, when the chain is required to be tensioned, a chain of the conveyor is tensioned by controlling the stroke of an oil cylinder of the hydraulic jack, thereby unhurriedly carrying out the chain-tensioning operation ...

Fire source safety exposure distance detection system and detection method thereof

The invention discloses a fire source safety exposure distance detection system comprising a heat source simulation module used for simulating a fire source condition when a fire occurs and controlling the temperature to be stabilized at a set value; the fabric moving device is used for fixing the fabric of the experimental sample and adjusting the distance between the heat source and the fabric; and the data acquisition module is used for acquiring the environment temperature in the heat exposure process, acquiring the density of heat flow reaching the surface of the sensor through the fabric and simulating the skin for information acquisition. According to the fire source safety exposure distance detection system, the fire source safety exposure distance is detected under the condition of confirming safety, people can better collect data conveniently, the fire source safety exposure distance detection system is used for evaluating the safety exposure distance of firefighters in a fire ...

Lagerstroemia indica microsatellite molecular markers and application in identifying interspecific hybrids of lagerstroemia indica

The invention provides lagerstroemia indica microsatellite DNA molecular markers, which comprise 12 lagerstroemia indica microsatellite loci. The invention also provides a method for screening the lagerstroemia indica microsatellite DNA molecular markers and application in identifying interspecific hybrids between the lagerstroemia indica and lagerstroemia caudata. In addition, the invention alsoprovides a primer sequence for amplifying the 12 lagerstroemia indica microsatellite loci and an amplification method thereof. Two DNA molecular markers which are suitable for identifying the interspecific hybrids of the lagerstroemia indica, such as Pretty Woman, White Cloud Reflecting Sun Glow, XTSC3, Pink Butterfly and Polyad and the lagerstroemia caudata are selected, and a technical system of the lagerstroemia indica microsatellite DNA molecular markers is built; and in the breeding practice of the lagerstroemia indica and the lagerstroemia caudata, by using the DNA molecular markers, the reality ...

Vanadium, chromium and molybdenum added steel plate and production method thereof

The invention discloses a vanadium, chromium and molybdenum added steel plate and a production method thereof. The steel plate consists of the following components in percentage by weight: more than or equal to 0.1% and less than or equal to 0.15% of C, less than or equal to 0.10% of Si, more than or equal to 0.40% and less than or equal to 0.60% of Mn, less than or equal to 0.008% of P, less than or equal to 0.005% of S, more than or equal to 2.00% and less than or equal to 2.50% of Cr, more than or equal to 1.00% and less than or equal to 1.10% of Mo, more than or equal to 0.25% and less than or equal to 0.35% of V, more than or equal to 0.10% and less than or equal to 0.20% of Ni, less than or equal to 0.05% of Nb, less than or equal to 0.20% of Cu, less than or equal to 0.003% of Sb, less than or equal to 0.010% of Sn, less than or equal to 0.010% of As, and the balance of Fe and inevitable impurities. The vanadium, chromium and molybdenum added steel plate disclosed by the invention ...

Coal charging machine for blasting driving face of coal mine

The invention provides a coal charging machine for a blasting driving face of a coal mine. The machine consists of a walking system, a working system, a power system and an operation system, wherein the walking system comprises a front trolley, a rear trolley and a walking push and pull oil cylinder which connects the front trolley and the rear trolley, and realizes moving forwards or backwards of the front trolley or the rear trolley through retraction of the walking push and pull oil cylinder; the working system comprises a bucket, a bucket arm, a movable arm and a turnplate device, the bucket is connected to the turnplate device through the bucket arm and the movable arm and moves forwards and backwards, left and right and up and down by means of hydraulic power; the power system is arranged on a hydraulic pump station on the front trolley; and the operation system is an operation station which controls the hydraulic pump station to operate actions of the oil cylinder. The coal charging ...

Nickel-based single crystal superalloy laser epitaxial growth method

The invention belongs to the technical field of structure repair, and relates to a nickel-based single crystal superalloy laser epitaxial growth method, which comprises the following steps of: obtaining temperature gradient distribution in a molten pool through numerical simulation of a laser cladding nickel-based single crystal alloy molten pool, and accurately predicting dendritic crystal growth direction and speed by utilizing a theoretical model. According to the method, the nickel-based single crystal superalloy is subjected to laser cladding, optimal laser process parameters are determined by judging whether dendritic crystal epitaxial growth is achieved or not, then laser cladding is conducted on the nickel-based single crystal superalloy through the laser cladding technology, accordingly, dendritic crystal epitaxial oriented growth is achieved, and the technical problem of nickel-based single crystal superalloy blade epitaxial growth repair is solved.

Method for preventing and treating quinoa fungal diseases and promoting quinoa growth by using African trichoderma harzianum

The invention relates to an African trichoderma harzianum LMNS-M9 strain, which is preserved in China General Microbiological Culture Collection Center on March 10, 2023, the preservation number is CGMCC No.40523, and the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No. 3, No.1 Yard, West Beichen Road, Chaoyang District, Beijing. The invention relates to a method for preparing a solid biological bacterial agent by utilizing Trichoderma harzianum LMNS-M9. The method comprises the following steps: activating a bacterial strain, preparing a spore-producing strain, and preparing the solid biological bacterial agent. The use method of the prepared solid biological agent comprises a seedling culture use method, a transplanting use method, an open field direct seeding use method and a growth period use method. The African trichoderma harzianum LMNS-M9 strain disclosed by the invention has the effects of preventing and treating quinoa fungal diseases, advancing ...

Lagerstroemia indica microsatellite molecular markers and application in identifying interspecific hybrids of lagerstroemia indica

The invention provides lagerstroemia indica microsatellite DNA molecular markers, which comprise 12 lagerstroemia indica microsatellite loci. The invention also provides a method for screening the lagerstroemia indica microsatellite DNA molecular markers and application in identifying interspecific hybrids between the lagerstroemia indica and lagerstroemia caudata. In addition, the invention also provides a primer sequence for amplifying the 12 lagerstroemia indica microsatellite loci and an amplification method thereof. Two DNA molecular markers which are suitable for identifying the interspecific hybrids of the lagerstroemia indica, such as Pretty Woman, White Cloud Reflecting Sun Glow, XTSC3, Pink Butterfly and Polyad and the lagerstroemia caudata are selected, and a technical system of the lagerstroemia indica microsatellite DNA molecular markers is built; and in the breeding practice of the lagerstroemia indica and the lagerstroemia caudata, by using the DNA molecular markers, the ...

Upgrading method of user handheld unit

The invention discloses a method for upgrading a user handheld unit, which adopts a mode of upgrading the user handheld unit through an electric meter, reads a configuration file and firmware version information at the first time after the CIU and the electric meter are electrified and paired each time, can ensure that the upgrading information is obtained at the first time, and improves the upgrading efficiency. Consistency of configuration of the user handheld unit and the electricity meter is ensured. Meanwhile, the mode that the version number and the file MD5 are verified at the same time is adopted, upgrading information can be judged more accurately, and the upgrading accuracy of the user handheld unit is improved.

Rail vehicle track and railroad switch

The invention relates to a rail vehicle rails and a turnout and can realize a double transportation and can improve the transporting efficiency, consisting of the rails and a pull rope. The pull rope is arranged between two rails and a middle segment of the rail is a double rail, and a moving rail is fixed tightly as a whole by two back-to-back rails. A hinged fulcrum of the moving rail is arranged on the intersection of inner rails of the two double rails, and the middle part of the moving rail is hinged with a piston rod of a hydraulic jack, and the rail is internally provided with a branch sheave. The invention is mainly used for the transportation of the goods in the coal mine underground roadway.

Variable pitch control unit and device thereof for wind driven generator

The invention provides a variable pitch control unit and a device thereof for a wind driven generator of an AC asynchronous motor. The device comprises a three-phase AC power source, a servo controller, a standby DC power source and an AC asynchronous motor, wherein the output end of the three-phase AC power source is connected with the input end of a servo power source; the servo controller comprises the servo power source, a servo driver and a control switch subunit, the output end of the servo power source is connected with the input end of the servo driver, and the output end of the servodriver is connected with the AC asynchronous motor; the anode of the standby DC power source is connected with the anode of a switching diode, the cathode of the standby DC power source is connected with the input end of the servo driver, and the cathode of the switching diode is connected with the output end of the servo power source; the signal output end of the servo driver is connected with the ...

High-functionality polyether polyol, preparation method thereof and rigid polyurethane foam plastic

The invention provides high-functionality polyether polyol, a preparation method of the high-functionality polyether polyol and rigid polyurethane foam plastic. According to the method, an initiator comprises high-functionality polysaccharide such as raffinose, stachyose, gentiotriose, pinotriose, maltotriose, nystose and maltotetraose, and polyether polyol with the functionality of 6-10 can be synthesized. The catalyst is prepared from amine and imidazole catalysts, so that a neutralization and refining treatment step is avoided, and waste is reduced. Due to the characteristics of polysaccharide, most of the similar products have melting points lower than that of sucrose, and the chroma of the product is superior to that of common high-functionality sucrose polyether. The content of residual unreacted sugar in the product is low, the yield is improved, and meanwhile, the problem of product turbidity in the subsequent application process is reduced. The polyether polyol is used for preparing ...

Distributed optical fiber disturbance positioning system based on the asymmetric dual Mach-Zehnder interference, and positioning method thereof

A distributed optical fiber disturbance positioning system based on the asymmetric dual Mach-Zehnder interference, unlike traditional dual Mach-Zehnder distributed optical fiber disturbance sensing system, the present invention adopts two narrow-bandwidth optical sources ( 1 a, 1 b ) and adopts corresponding DWDM ( 3 a, 3 b ) before the detector ( 4 a, 4 b ) to filter the backscatter noise of the optical fiber, and can solve the problems of having too low SNR due to backscatter influence when the sensing distance is long. The present invention also provides a positioning method for applying the system, which obtains the TFD of the disturbance frame signals by using the time-frequency analysis method based on the short-term average frequency, and takes the points near the point of maximum frequency as the effective signal segment for performing cross-correlation time delay estimation, thus obtaining the delay, and the disturbance position. The method of the invention positions the asymmetric disturbance frame signals in the systems, thus having a high positioning accuracy and reliability.

Steel for large-thickness hardening and tampering ocean platform and production method thereof

The invention discloses steel for a large-thickness hardening and tampering ocean platform, comprising the following components: 0.16 to 0.18 wt% of C, 0.15 to 0.35 wt% of Si, 1.10 to 1.15 wt% of Mn, no more than 0.015 wt% of P, no more than 0.005 wt% of S, 1.30 to 1.40 wt% of Ni, 1.20 to 1.30 wt% of Cr, 0.05 to 0.10 wt% of Cu, 0.45 to 0.55 wt% of Mo, 0.03 to 0.04 wt% of Nb, 0.020 to 0.025 wt% of Ti, 0.05 to 0.06 wt% of V, 0.02 to 0.04 wt% of Al, 0.0014 to 0.0023 wt% of B and balance of Fe and inevitable impurities. The production method comprises the steps of smelting, casting, heating, rolling, hardening, tempering and cutting to obtain a final product steel plate. The produced steel plate has reasonable design of the chemical components, low cost, large thickness (reaching 152mm), high strength, favorable impact toughness and favorable welding performance, and passes the factory certifications of DNV and CCS Classification Societies. The production process of the steel plate is simple ...

Radiation source intersection positioning method based on multi-station array optimization

The invention discloses a radiation source intersection positioning method based on multi-station formation optimization, and the method comprises the steps: carrying out the preliminary positioning, enabling a result obtained after the preliminary positioning to be used for determining a small space block, and then selecting an optimal formation corresponding to the small space block through comparing the geometric dilution degrees of different formations. And establishing a relation equation between the observation station position of the formation and the target position, and solving to obtain the target position with higher precision. According to the invention, rapid positioning in a wider area can be realized, and the positioning precision in some areas can be improved.

LED ring screen projection display system of land rig installation operation simulation system

The invention discloses a rig simulator drilling process simulation device which has independent intellectual property rights and is used for a land rig and system composition parts of the rig simulator drilling process simulation device. Based on the computer simulation technology, actual operation procedures of a drilling operation site are referred to, the drilling process procedure of the ZJ70D land rig is realistically simulated, the LED ring screen projection display system is used for skill and technical ability training of drilling site operators, the sense of reality of teaching training is enhanced, teaching training efficiency is improved, the training period is shortened, the training effect is improved, and training cost is reduced.

Central nervous type obesity gene risk assessment method and system

The invention discloses a central nervous type obesity gene risk assessment method. The method comprises the following steps: S1, determining a plurality of influencing genes, polymorphic sites, chromosome positions and polymorphisms corresponding to central nervous type obesity; s2, assigning a value to the risk score of each of the plurality of influencing genes and the sites thereof; s3, assessing the risk of the central nervous type obesity gene based on personal data, a gene detection result and a summation algorithm, wherein the summation algorithm is to add assignments corresponding to the risk scores of all detected influence genes at all sites to obtain a comprehensive score S; and S4, determining a central nervous type obesity gene risk assessment result based on comparison between the comprehensive score S and a risk assessment judgment standard. The invention further discloses a corresponding system, electronic equipment and a computer readable storage medium.

Easy-weld hardening high-strength steel plate and production method thereof

The invention relates to an easily welded, hardened and tempered high-intensity steel plate and its producing method, which comprises the following part: C<=0.15%, 0.15%-0.50% Si, 0.80%-1.80% Mn, P<=0.02%, S<=0.01%, Mn<=0.6%, Nb<=0.07%, B<=0.003%, Ni<=1.20%, Cr<=0.80%, Ti<=0.03%, V<=0.08%, the rest Fe and unavoidable impurity. The invention smelts with the electric furnace, which is provided with the low quantity P, S and the pure steel, gets the users' favor, has the low cost and the market competitive ability, solves the problem of big crystal grain and low dynamic ductility, and is fit for producing the high-intensity steel with low draught pressure rolling mill in the other steel factory. The invention also reduces the labor strength, which saves the time of the work, improves the availability ratio of the material, and reduces the leveling expense of making the steel plate.

Variable pitch control unit and device thereof for wind driven generator

The invention provides a variable pitch control unit and a device thereof for a wind driven generator of an AC asynchronous motor. The device comprises a three-phase AC power source, a servo controller, a standby DC power source and an AC asynchronous motor, wherein the output end of the three-phase AC power source is connected with the input end of a servo power source; the servo controller comprises the servo power source, a servo driver and a control switch subunit, the output end of the servo power source is connected with the input end of the servo driver, and the output end of the servo driver is connected with the AC asynchronous motor; the anode of the standby DC power source is connected with the anode of a switching diode, the cathode of the standby DC power source is connected with the input end of the servo driver, and the cathode of the switching diode is connected with the output end of the servo power source; the signal output end of the servo driver is connected with the ...

Shitake mushroom extract and application thereof

Eye fundus image classification method and device, equipment and storage medium

The invention discloses a fundus image classification method and device, equipment and a storage medium. The method comprises the following steps: acquiring a to-be-classified first fundus image; preprocessing the first fundus image to obtain a preprocessed second fundus image; inputting the second eye fundus image into a pre-trained image classification network model for image classification, the image classification network model being used for performing attention processing of fine-grained features on the second eye fundus image, and performing classification based on a processing result; and determining a classification result corresponding to the first eye fundus image according to the output of the image classification network model. Through the technical scheme of the embodiment of the invention, automatic classification of the fundus images can be realized, and the efficiency and accuracy of fundus image classification are improved.

Biological impedance measuring device and method

The invention discloses a biological impedance measuring device and method. The biological impedance measuring device comprises two measuring electrodes, two annular electrodes, voltage detection equipment and a constant current source, wherein the two measuring electrodes are respectively arranged at two ends of a measuring position of a to-be-measured part and are respectively connected with two input terminals of the voltage detection equipment; and the two annular electrodes are respectively arranged on two sides of a to-be-measured part and are respectively connected with two output terminals in the constant current source. According to the biological impedance measuring device, the annular electrodes are adopted as the exciting electrodes to carry out biological impedance measurement of the four electrodes, so that a plurality of uniformly distributed sites of a to-be-measured part can be connected with a measuring circuit to obtain balanced current, a unique impedance measured value ...

Soil sample calibration tank device for geotechnical engineering investigation

The utility model relates to the technical field of geotechnical engineering investigation. The utility model further discloses a soil sample calibration tank device for geotechnical engineering investigation. The device comprises a bending placement plate, a communication port is formed in the bending placement plate, a calibration tank is fixedly connected to the inner side face of the bending placement plate, auxiliary plates are fixedly connected to the front end and the rear end of the bottom side wall of an inner cavity of the bending placement plate, an auxiliary shaft is rotatably connected between the two auxiliary plates, and a first connecting plate is fixedly connected to the outer side wall of the auxiliary shaft. The utility model discloses a soil sample calibration tank device for geotechnical engineering investigation. The device comprises a first connecting plate, a second connecting plate, an auxiliary plate, an auxiliary shaft and a gravity block, through the cooperation ...

Endophytic curtobacterium of zanthoxylum as well as screening and purifying method and application of endophytic curtobacterium of zanthoxylum

The invention discloses an endophytic curtobacterium of zanthoxylum as well as a screening and purifying method and application of the endophytic curtobacterium of the zanthoxylum. The screening and purifying method is characterized by comprising the steps of with a fresh zanthoxylum fruit as the raw material, inhibiting the growth of fungi by using potassium dichromate, and then, screening and purifying by using methods such as sterilizing and cleaning, plate enrichment culture, gradient dilution plate coating, primary screening, secondary screening and the like. The endophytic curtobacterium of the zanthoxylum is determined as a novel subspecies of Brevibacterium frigoritolerans. The endophytic curtobacterium obtained by the invention is wide in carbon source selection range, and a fermentation metabolic product of the endophytic curtobacterium has oxidation resistance, so that the endophytic curtobacterium of the zanthoxylum has favorable application prospect in the aspect of production ...

Steel for large-thickness hardening and tampering ocean platform and production method thereof

The invention discloses steel for a large-thickness hardening and tampering ocean platform, comprising the following components: 0.16 to 0.18 wt% of C, 0.15 to 0.35 wt% of Si, 1.10 to 1.15 wt% of Mn, no more than 0.015 wt% of P, no more than 0.005 wt% of S, 1.30 to 1.40 wt% of Ni, 1.20 to 1.30 wt% of Cr, 0.05 to 0.10 wt% of Cu, 0.45 to 0.55 wt% of Mo, 0.03 to 0.04 wt% of Nb, 0.020 to 0.025 wt% ofTi, 0.05 to 0.06 wt% of V, 0.02 to 0.04 wt% of Al, 0.0014 to 0.0023 wt% of B and balance of Fe and inevitable impurities. The production method comprises the steps of smelting, casting, heating, rolling, hardening, tempering and cutting to obtain a final product steel plate. The produced steel plate has reasonable design of the chemical components, low cost, large thickness (reaching 152mm), highstrength, favorable impact toughness and favorable welding performance, and passes the factory certifications of DNV and CCS Classification Societies. The production process of the steel plate is simple ...

Coal charging machine for blasting driving face of coal mine

The invention provides a coal charging machine for a blasting driving face of a coal mine. The machine consists of a walking system, a working system, a power system and an operation system, wherein the walking system comprises a front trolley, a rear trolley and a walking push and pull oil cylinder which connects the front trolley and the rear trolley, and realizes moving forwards or backwards of the front trolley or the rear trolley through retraction of the walking push and pull oil cylinder; the working system comprises a bucket, a bucket arm, a movable arm and a turnplate device, the bucket is connected to the turnplate device through the bucket arm and the movable arm and moves forwards and backwards, left and right and up and down by means of hydraulic power; the power system is arranged on a hydraulic pump station on the front trolley; and the operation system is an operation station which controls the hydraulic pump station to operate actions of the oil cylinder. The coal charging ...

Protection device preventing derailment of cable wire

The invention discloses a protection device to prevent wire rope derailment. The invention comprises a body and a shaft. The upper part of the body is hinged with the shaft, and a trough is arranged on the lower part of the body. A noise elimination part is arranged on one of the trough surfaces and is embedded on the body. The invention is used in underground coal mine to prevent the overhead wire rope of the man car from derailing.

Lagerstroemia caudate microsatellite DNA molecular markers and application thereof

The invention provides lagerstroemia caudate microsatellite DNA molecular markers which comprise 15 lagerstroemia caudate microsatellite loci. The invention further provides a method for screening the lagerstroemia caudate microsatellite DNA molecular markers, and an application of the method in researching lagerstroemia caudate genetic diversity. In addition, the invention further provides primer sequences for amplifying 15 lagerstroemia caudate microsatellite loci and an amplification method thereof and establishes a lagerstroemia caudate microsatellite DNA molecular marker technical systemfor lagerstroemia caudate genetic diversity analysis, fingerprint establishment and molecular-marker-assisted breeding, thus the DNA molecular markers are reliable and effective and have good repeatability.

Deep foundation pit supporting structure

The utility model discloses a deep foundation pit supporting structure. The supporting device comprises a supporting rod, a bent rod and a supporting plate, connecting bolts are in threaded connectionwith the surfaces of the supporting plates; the middle part of the upper surface of the bent rod is fixedly connected with a connecting block; a connecting rod is fixedly connected to the lower surface of the bent rod, an L-shaped connecting plate is movably connected to one side of the supporting rod, an L-shaped rod is movably connected to the surface of the L-shaped connecting plate, a fixingbolt is in threaded connection with the surface of the L-shaped rod, a connecting shaft is in threaded connection with the lower surface of the supporting rod, and inserting grooves are formed in thesurfaces of the supporting rod and the connecting block. Deep foundation pit supporting structure, through the arrangement of the L-shaped connecting plates and the L-shaped rods, the L-shaped rods can be ...

DISTRIBUTED OPTICAL FIBER DISTURBANCE POSITIONING SYSTEM BASED ON THE ASYMMETRIC DUAL MACH-ZEHNDER INTERFERENCE, AND POSITIONING METHOD THEREOF

A distributed optical fiber disturbance positioning system based on the asymmetric dual Mach-Zehnder interference, unlike traditional dual Mach-Zehnder distributed optical fiber disturbance sensing system, the present invention adopts two narrow-bandwidth optical sources () and adopts corresponding DWDM () before the detector () to filter the backscatter noise of the optical fiber, and can solve the problems of having too low SNR due to backscatter influence when the sensing distance is long. The present invention also provides a positioning method for applying the system, which obtains the TFD of the disturbance frame signals by using the time-frequency analysis method based on the short-term average frequency, and takes the points near the point of maximum frequency as the effective signal segment for performing cross-correlation time delay estimation, thus obtaining the delay, and the disturbance position. The method of the invention positions the asymmetric disturbance frame signals in the systems, thus having a high positioning accuracy and reliability. 1. A distributed optical fiber disturbance positioning system based on the asymmetric dual Mach-Zehnder interference , wherein the system comprises:Optical source: two narrow-bandwidth distributed feedback lasers into 1550 nm wavelength range, wavelength difference of two optical sources is larger than the wavelength interval of dense wavelength division multiplexer (short for DWDM) of the system;Optical circulator: transmitting the light emitted from the optical source to the material to be tested and collecting the reflected signal light;DWDM: two commercial single-channel DWDMs into the 1500 nm operating wavelength range, each spectral transmission range thereof only comprises wavelength of one optical source;Photoelectric detector (short for PD): InGaAs PD, for receiving optical signals and performing photoelectric conversion and amplification;Optical fiber coupler: 3 dB optical fiber coupler of which ...

Moving platform relative pose estimation method based on multi-camera system

The invention relates to the technical field of visual navigation, and provides a mobile platform relative pose estimation method based on a multi-camera system, which comprises the following steps: synchronously acquiring images at three continuous moments by using the multi-camera system in a mobile platform, and forming an image pair by the images at the three continuous moments; matching point pairs are tracked by combining a FAST operator and a pyramid LK optical flow method; eliminating mismatching point pairs based on a forward and backward error strategy; the method comprises the following steps: randomly selecting a matching point pair, solving relative poses of a moving platform at three continuous moments based on an Ackerman motion model, performing re-projection on a space point corresponding to each matching point pair by utilizing each solution, calculating a re-projection error to judge inner points, and taking the maximum total number of the inner points as a better solution ...

Offshore wind power cluster scheduling optimization method and device based on energy router

The invention discloses an offshore wind power cluster scheduling optimization method and device based on an energy router, and the method comprises the steps: obtaining link request information of a request node, the link request information comprising power information and electric energy level information requested by the request node; determining a source node and a destination node involved in the link request information, and generating target request information of a preset data structure according to the link request information, the source node and the destination node; and according to the target request information, calculating a target optimal path through a deep learning ant colony algorithm and a long short-term memory neural network. Optimized scheduling based on the single fan output power and the wind power cluster output power can be realized, the wind power cluster output power and the power grid demand can be dynamically balanced, the network link utilization rate can ...

Preparation method of selenide nanometer particle load on TiO2 wires

The invention discloses a preparation method of semiconductor selenide nanometer particle load on TiO2 wires. The method comprises the steps of directly mixing laminated titanate wire exchanged with metal ions and selenium compound-containing water solution dissolved in water, adding in a reaction kettle, and processing for hours at a temperature of 60-240 DEG C to obtain the load-type compound phase wire; or, the load-type compound phase wire also can be prepared by directly loading the selenide nanometer particle the surface of which is bonded with a surface active agent on the TiO2 wires. The preparation method is simple and the reaction condition is easy to control. The prepared load-type selenide nanometer particle and TiO2 compound phase wire are acid-resistant after being pressed into compound material and the selenide nanometer particle can be oxidized hardly. Accordingly, the invention has great potential application value in the fields of photo electricity conversion or photo ...

GAS REMOVER AND ITS USE IN VACUUM PACKAGING OF AGRICULTURAL PRODUCTS

The present invention relates to the preservation and packaging of the agricultural products and discloses a gas remover and a method for packaging agricultural products. The gas remover provided herein is capable of effectively removing gas released in a vacuum sealer bag. The gas remover includes calcium hydroxide, which can effectively removes gas released by the plant-based agricultural products in the vacuum sealer bag, avoiding the expansion of the vacuum sealer bag.

Steel plate with low welding crack sensitivity and production method thereof

The invention discloses a low-welding crack sensitivity steel board and manufacturing method, which comprises the following parts: not more than 0.07% C, 0.15-0.40% Si, 1.00-1.60% Mn, not more than 0.015% P, not more than 0.010% S, not more than 0.30% Cu, not more than 0.50% Ni, not more than 0.30% Cr, not more than 0.30% Mo, not more than 0.08% V, not more than 0.08% Nb, 0.010-0.020% Ti, not more than 0.003% B, Fe and inevitable impurity. The invention is characterized by the following: (1)displaying lower welding crack sensitivity component with Pcm not more than 0.20%; (2)mating the strength and flexibility reasonably with fitful yielding ratio; (3)making the price and property of the steel board superior to the congeneric import product; (4)making the maximum breadth of steel board to 4000mm; (5)simplifying the technique to ensure higher flatness without quenching water.

Preparation method of biodegradable interpenetrating network polymer microspheres

The invention relates to a preparation method of biodegradable interpenetrating network polymer microspheres. Firstly a low molecular weight sodium alginate aqueous solution is prepared. The sodium alginate aqueous solution is partially oxidized into an aldehyde function group (oxidisability controlled within 10-40%). Further a carboxymethyl chitosan aqueous solution is prepared. Both solutions are mixed uniformly according to different ratios, and are suspended in paraffin oil and stirred at high speed to form an emulsion. The emulsion is heated and dehydrated through vacuum pressure reduction. The microspheres are filtered out and dried, and small balls with the diameter between 310-550microns are prepared. In the microspheres, the sodium alginate and the carboxymethyl chitosan form a special interpenetrating network structure. Two polymers also form crosslinking points through electrostatic adsorption and chemical reaction of amino and aldehyde groups except that chain segments are interlaced ...

Concentrator power failure reporting method under battery failure condition

The invention discloses a concentrator power failure reporting method under the condition of battery failure, which comprises the following steps of: recording key operation log information of equipment in a normal operation stage of the equipment, and if the equipment is abnormally powered off, calculating whether the equipment is normally powered off or is abnormally powered off and powered off by analyzing an operation log after the power is off; therefore, the purposes of judging the power failure event of the concentrator under the condition of battery failure and reporting the power failure event are achieved.

Green eyeshield intelligence LED table lamp is polluted in zero radiation zero

The utility model discloses a green eyeshield intelligence LED table lamp is polluted in zero radiation zero. The utility model discloses a LED table lamp includes: light source, closed type switch, DC power supply and current control component, the utility model discloses initial provide to use dark green light source as LED table lamp, the method of utilizing the tri colour LED lamp pearl of RGB to pass through hybrid modulation successfully mediate out dark green eyeshield chromatic light source, alleviates the fatigue of reader's eyes and uncomfortable effectively, can carry out continuously adjustable to light source luminance, satisfy the demand of different readers to different illumination brightness better, has disposed heat simultaneously and has released electric infrared inductor and photo resistance, humanized design intelligent function, the especially volume of saving energy that intelligent design is better to turning off the light, better concord the design motif of green ...

Large thickness quenched high strength steel and production method thereof

The invention belongs to the field of metal materials and discloses a large-thickness and high-strength quenched and tempered steel plate and a production method thereof. The steel plate mainly consists of the following chemical components by weight percentages: not more than 0.18% of C, 0.1-0.4% of Si, not more than 1.2% of Mn, 0.7-1.7% of Ni, 1.0-1.5% of Cr, 0.4-0.6% of Mo, 0.03-0.08% of V, 0.02-0.04% of Al, 0.0005-0.0020% of B, Fe and unavoidable impurities. The molten steel designed according to the components of the invention can be rolled into the large-thickness steel plate by smeltingprocess, casting process, heating process, rolling process, water cooling process and quenching and tempering process. The steel plate has the advantages of reasonable component design, good comprehensive properties and low production cost, can be applied to off-shore oil production platform engineering, power stations, engineering scaffolds and other industries and has good application prospect.

Runoff simulation method based on coupled neural network and hydrological physical model

The invention discloses a runoff simulation method based on a coupled neural network and a hydrological physical model, belongs to the technical field of hydrological models, and provides a runoff simulation method based on the coupled neural network and the hydrological physical model. The method can effectively solve the problems that an existing simulation method is inaccurate in long-time-sequence hydrological forecasting and large deviation exists in peak flow simulation, and can relieve the difficulty that data lacks during simulation work, so that the time sequence capturing capacity of runoff simulation is enhanced, the processing efficiency and accuracy are improved, and support is provided for flood control management and emergency decision making. According to the method, the runoff simulation scheme of the coupling neural network and the hydrological physical model is established, so that the simulation result is more accurate than that of an independent machine learning mode ...

Waste liquid drying process system

Waste liquid drying process system is including waste liquid coating mechanism, the surperficial mechanism of circulating, recovery mechanism, heating mechanism. The waste liquid adopts the heating mechanism of big drum -type circulation surperficial mechanism if adopt the conduction oil heat dissipation nest of tubes closely to surperficial circulation mechanism waste liquid coating after retrieve before toast with the waste liquid coating to the circulation of big cylinder surface mechanism through cylinder coating mechanism. Before getting back to the starting point in coating district, use scraper blade, brush etc. To retrieve mechanisms the surplus materials of drying from surperficial circulator constituent from retrieving and the bagging -off. The utility model discloses simple structure, it is with low costs, can effectively separate the heavy metal in the sewage, noxious material etc. Conveniently when especially carrying out solidification treatment to the colloid of abandonment ...

Micro-explosion catalytic combustion-supporting environmentally-friendly coal saving agent

The invention relates to a micro-explosion catalytic combustion-supporting environmentally-friendly coal saving agent, which belongs to a chemical product composition without chloride ions for environmental protection and coal saving. The invention mainly solves the technical problem of low coal-saving efficiency of the existing coal saving agent. The technical scheme of the invention is that the micro-explosion catalytic combustion-supporting environmentally-friendly coal saving agent comprises the following components in percentage by weight: 0.1-10% of potassium permanganate, 1-40% of pH salt, 0.1-15% of methanol, 0.01-0.4% of triethanolamine acetate, and the balance of water or filler. The micro-explosion catalytic combustion-supporting environmentally-friendly coal saving agent is widely suitable for coal burning boilers, chain furnaces, reciprocating furnaces, vulcanizing bed boilers, cement plant rotary kilns, electric power plant pulverized coal furnaces, coal gas producer gas making ...

Easy-weld hardening high-strength steel plate and production method thereof

MONO-MATERIAL SELF-SHARPENING MACHINE BIT AND ITS STEEL

The present invention belongs to the technological field of making trace alloy tool steel and the machine bit made of it. The chemical components ( by weight ) of said steel are: 0.81-1.20% of c, 0.10-0.40% of Si, 0.10-0.40% of Mn, appropriate measure of mixed rare earth metal (REM), and Nb or Ti or V, Fe and impurity residure. Said steel is suitable to manufacture agricultural machinery bit, coulter and reaping-hook etc and also suitable to manufacture the cuter blade of printing, paper-making and wood processing machines. The bit is heated at 820+-10 deg. C and spsray quenched on single side, after heat treatment of air cooling and low tempering, it possesses of high wearing capacity (HRC larger than 62), automatically self-sharpening property and appropriate toughness.

Progressive out-of-focus lens combining microsphere array based on free-form surface and Fresnel lens

A progressive out-of-focus lens combining a microsphere array based on a free-form surface with a Fresnel lens comprises a lens body, the concave surface of the lens body is the free-form surface, the center of the convex surface of the lens body is a circular area, the circular area is a free-form surface, and an overlapping layer extending towards the edge of the lens is arranged on the convex surface around the circular area. The superposed layer is attached to the convex lens substrate layer, a plurality of concentrically distributed aspheric micro lens ring belts and Fresnel lens ring belts are alternately arranged in the superposed layer along the radial direction of the lens, the aspheric micro lenses in the same aspheric micro lens ring belt have the same diopter, and the aspheric micro lenses in different ring belts have different diopters. The diopters of the Fresnel lenses in different ring bands are different, and the diopters of the aspheric micro lenses and the diopters of ...

Method for quantitatively detecting living soybean phytophthora zoospore in soil

The invention discloses a method for quantitatively detecting living soybean phytophthora zoospore in soil. The method for quantitatively detecting the living soybean phytophthora zoospore in the soil is an innovative quantitative method based on a leaf disk trapping method. Quantitative detection of the living soybean phytophthora zoospore in the soil is achieved based on the chemotaxis of the living soybean phytophthora zoospore to the soybean leaf disks and the unique morphological characteristic of the soybean phytophthora zoospore under a microscope via strict quantitation of a to-be-detected soil sample, soil suspension concentration, the size and quantity of leaf disks, the size of a culture dish and the culture time. The method is suitable for quantitatively detecting the living soybean phytophthora zoospore in the fresh soil in a soybean disease season, and is suitable for popularization and application.

Method for predicting popularity of shop based on singular value decomposition

The invention discloses a method for predicting the popularity of a shop based on singular value decomposition (SVD) and solves a technical problem of low efficiency of a conventional shop address selecting system and method. The method uses user preference as a medium, adds shop characteristic fusion and shop preference learning on the basis of SVD, and acquires effective information by using social media and location-based service, wherein the information includes the information of commercial areas around the shop, traffic information around the shop, and passenger flow information around the shop. The method for predicting the popularity by using the SVD not only embodies recessive characters but also embodies extracted dominant characters. In a matrix decomposition process, a left singular vector, a right singular vector, and a shop feature vector are iteratively computed. A neighbor shop of a newly-opened shop is computed by using the shop, the vector parameter value of the newly-opened ...

Method for directionally cladding nickel-based single crystal by laser based on artificial intelligence

The invention discloses a laser directional cladding method for nickel-based single crystals based on artificial intelligence, which controls the nickel-based single crystals to grow along a correct epitaxial growth direction, namely the [001] direction of the nickel-based single crystals, according to the artificial intelligence, and specifically comprises the following steps: determining data, searching the data and forming a training data set; and determining a threshold value, screening the training data set according to the threshold value, processing the data through a BP neural network to obtain an optimal laser cladding angle, determining a laser cladding track of the nickel-based single crystal superalloy according to the mode, presetting the optimal laser cladding track, and determining the laser cladding angle of the nickel-based single crystal superalloy according to the preset optimal laser cladding track. And the pretreated base material is subjected to laser cladding according ...

Large thickness quenched high strength steel and production method thereof

The invention belongs to the field of metal materials and discloses a large-thickness and high-strength quenched and tempered steel plate and a production method thereof. The steel plate mainly consists of the following chemical components by weight percentages: not more than 0.18% of C, 0.1-0.4% of Si, not more than 1.2% of Mn, 0.7-1.7% of Ni, 1.0-1.5% of Cr, 0.4-0.6% of Mo, 0.03-0.08% of V, 0.02-0.04% of Al, 0.0005-0.0020% of B, Fe and unavoidable impurities. The molten steel designed according to the components of the invention can be rolled into the large-thickness steel plate by smelting process, casting process, heating process, rolling process, water cooling process and quenching and tempering process. The steel plate has the advantages of reasonable component design, good comprehensive properties and low production cost, can be applied to off-shore oil production platform engineering, power stations, engineering scaffolds and other industries and has good application prospect.

Large-span overhead pipeline sliding installation method

The invention discloses large-span overhead pipeline sliding installation technology which comprises an overhead pipeline truss. The technology is characterized by comprising the following installation steps: a) making a new bracket and a temporary bracket; b) providing multiple sections of pipelines; c) installing a horizontal pipeline spanning over a factory protection river and an over-railway section; and d) installing vertical sections of pipelines on the two sides of the horizontal pipeline. By the large-span overhead pipeline sliding installation method disclosed by the invention, pipelines can be hoisted in place successfully when the pipelines cannot be hoisted in place conventionally by a crane due to the restriction of a narrow field and other objective conditions, the construction safety and installation quality are guaranteed, and the installation construction expenses is reduced greatly.

Method and device for determining optimal retreat mode of nuclear power plant

The invention discloses a method and device for determining an optimal retreat mode of a nuclear power plant, and the method comprises the steps: determining a to-be-optimized target system which comprises a plurality of candidate retreat modes; analyzing availability requirements and safety margins of the plurality of candidate retreat modes; judging whether the plurality of candidate retreat modes have the retreat modes with the same availability requirements and different safety margins or not; if not, judging whether the to-be-optimized target system has the availability requirement only in the low mode or not; and if not, obtaining the retreat mode with the least starting events, and taking the retreat mode as the optimal retreat mode. According to the method and device for determining the optimal retreat mode of the nuclear power plant, the method for determining the optimal retreat mode is more convenient and low in calculation amount, after the unit adopts retreat mode optimization ...

Method for producing high-thickness Z-direction steel plate

The invention discloses a method for producing a high-thickness Z-direction steel plate, which comprises the following steps: smelting molten steel in an electric furnace, refining the molten steel in an LF refining furnace, and subjecting the molten steel to vacuum treatment in a vacuum degassing furnace; casting the smelted molten steel; remelting electroslag, heating, rolling into a sheet, cooling and performing hydrogen diffusion treatment; performing the ultrasonic flaw detection of the steel plate subjected to hydrogen diffusion treatment; and normalizing the steel plate subjected to flaw detection to obtain the finished thick steel plate. The method has the advantages that: 1) the strength and toughness of the steel plate are well matched, the yield strength of the steel plate is 334 to 380MPa, the tensile strength of the steel plate is 508 to 555MPa, the impact power of the steel plate at 1/2 thickness point and at 20 DEG C below zero is more than or equal to 100J, and the elongation ...

Toxic gas detector based on NB-Iot

The utility model discloses a toxic gas detector based on NBIot, which comprises a shell, a plurality of sensors are connected inside the shell through an arranged lifting assembly, one end of the shell is provided with an extending port used for penetrating through the lifting assembly, the extending port is connected with an automatic sealing plate, the lifting assembly is arranged inside the shell, and the other end of the shell is provided with an automatic sealing plate. The lifting assembly comprises a sliding groove, a power unit and a lifting block, the sliding groove is connected to the shell and arranged in the axis direction of the shell, the lifting block is connected to the sliding groove in a sliding mode, and the power unit is used for driving the lifting block to slide along the sliding groove. Through the arrangement of the lifting assembly and the automatic sealing plate, when toxic gas needs to be detected, the lifting assembly extends out of the shell, the sensor detects ...

Panoramic roaming method and device

The invention provides a panoramic roaming method and device. The panoramic roaming method comprises the following steps: acquiring a plurality of shooting position points and corresponding first panoramic images in a target scene map; rendering each shooting position point on each first panoramic image in the form of a preset identifier to obtain a plurality of second panoramic images; the distance between a target position point and each shooting position point in the target scene map is obtained, and the target position point is the shooting position point for shooting the corresponding second panoramic image; removing a preset identifier corresponding to a shooting position point of which the distance to the target position point is greater than a preset value on the second panoramic image to obtain a third panoramic image; and performing panoramic roaming based on the third panoramic image corresponding to each shooting position point. According to the invention, the actual scene can ...

Gyroscope calibration circuit and device

The utility model discloses a gyroscope calibration circuit and device. A temperature and humidity detection module, a signal processing module and an upper computer are added; the real-time detectionof the actual temperature and humidity of each gyroscope is realized; and the target rotation angle is selected according to the actual temperature and humidity so as to correspondingly detect and calibrate each gyroscope, so that the problems of low test precision and difficulty in correctly calibrating the gyroscopes due to the fact that the influence of the temperature and humidity on the gyroscopes is not considered and only one reference standard is adopted to detect the gyroscopes in the traditional technical scheme are solved.

Method and device for measuring working fluid level of oil well

The invention relates to a method and device for measuring a working fluid level of an oil well. The method comprises the steps of generating a transient mechanical striking force; enabling a resonant cavity with liquid to generate transient free vibration under an effect of the transient mechanical striking force and forming a transient sound field in the resonant cavity; receiving a time domain waveform signal of the transient sound field; and obtaining a resonant acoustic spectrum frequency of the resonant cavity according to the transient time domain waveform signal so as to obtain a depth value of the working fluid level in the resonant cavity. By means of the method and device, disclosed by the invention, the depth value of the working fluid level is obtained through accurate measurement, the recognition difficulty of the obscure working fluid level is solved, and thus the variation of the working fluid level during the production of the oil well, in particular the situation that ...

Chain-tensioning device of scraper conveyor

The invention discloses a safe and high-efficiency chain-tensioning device of a scraper conveyor, which comprises a manual hydraulic jack, a steel wire rope and a connector, wherein a middle section of the steel wire rope is fixed at the head part of the hydraulic jack; two ends of the steel wire rope are sleeved on connecting pins of the connector which has a U-shaped structure; and the connecting pin is inserted into two side plates of the connector and is movably matched with the connector. The chain-tensioning device comprises the manual hydraulic jack, the steel wire rope and the connector; the middle section of the steel wire rope is fixed at the head part of the hydraulic jack; and two ends of the steel wire rope are sleeved on the connecting pin of the connector. Therefore, when the chain is required to be tensioned, a chain of the conveyor is tensioned by controlling the stroke of an oil cylinder of the hydraulic jack, thereby unhurriedly carrying out the chain-tensioning operation ...

Multi-view reconnaissance image matching system and method

The invention relates to the technical field of image matching, and provides a multi-view reconnaissance image matching system and method. The system comprises a plurality of flight platforms and an inter-platform communication module, wherein the inter-platform communication module comprises a plurality of communication sub-modules; each flight platform is provided with a reconnaissance image acquisition module, a reconnaissance image matching module and a communication sub-module; the reconnaissance image acquisition modules are connected with the corresponding reconnaissance image matching modules, the reconnaissance image matching modules are connected with the corresponding communication submodules, and all the communication submodules are in communication connection. The method comprises the following steps: acquiring multi-view reconnaissance images Extracting reconnaissance image features; image feature level information transmission; carrying out primary image matching, and carrying ...

Cascading isothermal amplification based miRNA fluorescence detection kit and miRNA fluorescence detection method

The invention discloses a cascading isothermal amplification based miRNA fluorescence detection kit and a miRNA fluorescence detection method. The target miRNA can specifically recognize and form a stable three-way crossing structure with a ternary probe through complementary hybridization of nucleic acids; a ternary primer in the three-way crossing structure performs strand displacement amplification (SDA) along a ternary template and generates a number of SDA template products; the SDA template product can open a difunctional hairpin probe to trigger nickase to perform signal amplification reaction finally; and a cyclophorase digestion molecular beacon can generate cascading amplified fluorescence signals. The kit can detect miRNA low to 100fM; and the detection method has superhigh specificity, can well distinguish highly homologous sequences at different mispairing positions and solves the difficult problem of false positive result caused by poor specificity in the existing detection ...

Powder metallurgy tantalum powder and/or niobium powder and preparing method thereof

The invention provides a preparing method of powder metallurgy tantalum powder and/or niobium powder. The method comprises the steps that (1) heat treatment sintering is conducted, wherein heat treatment sintering is conducted on raw tantalum powder and/or the niobium powder and after sintering is accomplished, cooling is conducted and then passivation is conducted so that a sintered block can be obtained; (2) hydrogenation and powder preparation are conducted, wherein the sintered block obtained through heat treatment is hydrogenated and powder is prepared so that the hydrogenated tantalum powder and/or the hydrogenated niobium powder can be obtained; (3) dehydrogenation and oxygen reduction are conducted, wherein reducibility metal is added to the hydrogenated tantalum powder and/or the niobium powder so that dehydrogenating and deoxygenating heat treatment can be conducted, and therefore a mixture of reducibility metallic oxide, residue reducibility metal, dehydrogenated and deoxidized ...

Shitake mushroom extract and application thereof

The invention relates to a shitake mushroom extract. The shitake mushroom is used as raw materials, and the extraction process comprises a step of ultrasonic extraction. The shitake mushroom extract is not extracted by the traditional enzymolysis method for extracting lentinan. Due to the adoption of the ultrasonic extraction, the time is shortened to 1/3 to 1/4 of that of the traditional method,the temperature is reduced by 30 to 40 DEG C, and the yield is increased by 5 to 30 percent. The method has the advantages of simple technical process, less procedure, short extraction time, resourceconservation and low production cost; and the prepared lentinan has high content of parent medicament and high economic value, is favorable for mass production and has great development space.

Intelligent electric meter concentrator file management method based on ad hoc network module

The invention discloses an intelligent electric meter concentrator file management method based on an ad-hoc network module, and the method comprises the following steps: 1, topological information management: carrying out the continuous and cyclic query, updating and completing of an intelligent electric meter file through a topological information cyclic management module; step 2, address information management: when the master station regularly sends a command of interrogating files to the concentrator, the concentrator reports intelligent electric meter file information tables which are stored and classified inside to the master station for the master station to carry out file classification display, and meanwhile, the concentrator also carries out meter reading processing according to information in the files; and according to the step 1 and the step 2, generating an ammeter file storage information table. The method has the beneficial effects that the whole file management method ...

System and method for monitoring diesel vehicle emissions based on big data of remote sensing

The present disclosure provides a system and method for monitoring diesel vehicle emissions based on big data of remote sensing. The monitoring system includes a vehicle remote sensing data monitoring platform, a host computer, an emission remote sensing instrument, a vehicle driving state monitor, an information display screen and a license plate camera. The emission remote sensing instrument is used to acquire information of a pollutant in an exhaust plume. The vehicle driving state monitor is used to acquire a vehicle speed and acceleration. The license plate camera is used to capture license plate information. The host computer is used to process and calculate vehicle cycle and emission information. The vehicle remote sensing data monitoring platform is used to determine a high-emission vehicle, and pre-store information of all diesel vehicles, different driving cycle bins of each type of diesel vehicles and high-emission thresholds set for different bins.

Fouling prevention ability-imparting agent and water treatment membrane manufactured using same

The present invention provides an antifouling ability-imparting agent that adheres well to a variety of water treatment membranes such as reverse osmosis membranes and imparts excellent antifouling ability to the water treatment membranes. The present invention relates to an antifouling ability-imparting agent containing a copolymer, the copolymer containing: a structural unit (I) represented by the following formula (1): wherein R 1 is a hydrogen atom or a methyl group; R 2 is a direct bond, —CH 2 —, —CH 2 CH 2 —, or —CO—; R 3 s are the same as or different from each other and are each a C1-C20 alkylene group; X is —CH 2 CH(OH)CH 2 (OH) or —CH(—CH 2 OH) 2 ; and n is a number of moles of oxyalkylene groups added and is 0 to 100; and a structural unit (II) represented by the following formula (2): wherein R 4 is a hydrogen atom or a methyl group; R 5 is a direct bond, —CH 2 —, —CH 2 CH 2 —, or —CO—; R 6 s are the same as or different from each other and are each a C1-C20 alkylene group; R 7 is a hydrogen atom or a C1-C20 alkyl group; and m is a number of moles of oxyalkylene groups added and is 1 to 100.

Multi-servo processing machine having both functions of stamping and forging

Fouling prevention ability-imparting agent and water treatment membrane manufactured using same

The present invention provides an antifouling ability-imparting agent that adheres well to a variety of water treatment membranes such as reverse osmosis membranes and imparts excellent antifouling ability to the water treatment membranes. The present invention relates to an antifouling ability-imparting agent containing a copolymer, the copolymer containing: a structural unit (I) represented by the following formula (1): wherein R 1 is a hydrogen atom or a methyl group; R 2 is a direct bond, —CH 2 —, —CH 2 CH 2 —, or —CO—; R 3 s are the same as or different from each other and are each a C1-C20 alkylene group; X is —CH 2 CH(OH)CH 2 (OH) or —CH(—CH 2 OH) 2 ; and n is a number of moles of oxyalkylene groups added and is 0 to 100; and a structural unit (II) represented by the following formula (2): wherein R 4 is a hydrogen atom or a methyl group; R 5 is a direct bond, —CH 2 —, —CH 2 CH 2 —, or —CO—; R 6 s are the same as or different from each other and are each a C1-C20 alkylene group; R 7 is a hydrogen atom or a C1-C20 alkyl group; and m is a number of moles of oxyalkylene groups added and is 1 to 100.

基于婴儿保温箱的重力喂养装置

本实用新型公开了基于婴儿保温箱的重力喂养装置，包括底箱，设置在底箱上侧面的顶箱，设置在顶箱前后两侧的侧开口，设置在顶箱左侧或右侧的端部开口，还包括设置在顶箱上侧面的喂食功能口，环绕在喂食功能口且设置在顶箱上侧内壁的固定圈层，以及与该喂食功能口和固定圈层相匹配的重力喂养装置。本实用新型提供基于婴儿保温箱的重力喂养装置，很好的将特殊婴儿的喂养装置与婴儿保温箱相结合，进一步提高了婴儿保温箱的功能性，同时降低了特殊婴儿的喂食难度，更好的保护了特殊婴儿的安全，另外，还很好的降低了护理人员的操作难度，进而降低了对护理人员的经验要求，更好的降低了医院的人力资源。

Method for preparing asymmetric wettable polyimide fiber-based photothermal aerogel

A method for preparing an asymmetric wettable polyimide fiber-based photothermal aerogel is provided. The method includes the steps: uniformly mixing polyimide powder and a solvent, then, performing electrostatic spinning, and cutting an obtained fiber felt into pieces for later use; mixing the broken fibers, polyamic acid and tert-butyl alcohol, then, performing shearing to form a stable dispersion liquid for low-temperature directional freezing, and performing freeze-drying and high-temperature thermal imidization to obtain a polyimide fiber-based aerogel material; and soaking the above aerogel material in a hydrophilic monomer solution for a polymerization reaction, and then performing low-temperature directional freezing and freeze-drying to obtain a hydrophilic polyimide fiber-based aerogel. The aerogel is placed under light source irradiation, and dropwise coating is performed on an upper surface of the aerogel with a hydrophobic filler resin mixed solution to obtain the asymmetric wettable fiber-based photothermal aerogel.

System and method for monitoring diesel vehicle emissions based on big data of remote sensing

Display screen protection method and display driving apparatus