194results about How to "Has little effect" patented technology

The invention relates to a device and method for preparing a rock-like material structural plane and utilizing the rock-like material structural plane to a shearing test. The device comprises a test part manufacturing system, a test part system, a loading system and a data acquisition system. The device provided by the invention can realize preparation of the rock-like material structural plane and a weak intercalated layer structural plane containing different fillers, and researches on shearing properties of the structural plane can be realized.

The invention relates to an on-line software upgrading method and device, applied to industrial control systems, and the method includes the following steps: an upgrading step: a microprocessor controls a backup program memory to store the downloaded software upgrading data and upgrades the corresponding software in the memory; a switching steps: the microprocessor controls to exchange the memory addresses of the upgraded backup program memory and the main program memory so as to switch the main and backup working program regions. The device includes: at least two memories, an address converting circuit and a microprocessor. As the software is upgraded, it implements the switch between the main and backup working program regions by the address converting circuit, ensuring stability, safety, reliability and continuity on industrial control occasions.

A method for characterizing humification degree of compost includes steps of taking a compost sample, adding water in the compost sample and shaking to obtain extract liquor, and taking a supernate filter membrane after centrifugation to prepare water-soluble organic matter sample solution of the compost; performing three-dimensional fluorescence spectrometry for the water-soluble organic matter sample solution of the compost and exporting data, and taking points in identical intervals one by one according to transmitting wavelength so as to obtain three-dimensional fluorescence spectrum matrix data; assigning the data with excitation wavelength larger than or equal to the transmitting wavelength in the three-dimensional fluorescence spectrum matrix data as 0, and adducting data in a range that the excitation wavelength is larger than or equal to 200nm and smaller than or equal to 440nm and the transmitting wavelength is larger than or equal to 280nm and smaller than 380nm so as to obtain the sum P of total fluorescence intensities of albuminoid substances; and adducting data in a range that the excitation wavelength is larger than or equal to 200nm and smaller than or equal to 440nm and the transmitting wavelength is larger than or equal to 380nm and smaller than or equal to 550nm so as to obtain the sum H of total fluorescence intensities of humic-like substances. The humification degree of the compost sample can be compared and evaluated according to an H / P value.

The invention discloses a stator permanent magnetic flux-switching bearing-free motor with E-shaped teeth. The stator permanent magnetic flux-switching bearing-free motor with the E-shaped teeth comprises a stator and a rotor. The stator comprises E-shaped permeance iron cores, permanent magnets, a concentrated armature winding and a set of concentrated floating windings. The concentrated floating windings, the armature winding and the permanent magnets are arranged in the stator. A stator permanent magnetic doubly-salient structure is used, a stator iron core is formed by assembling the permeance iron cores with an E-shaped cross section and the permanent magnets arranged among the permeance iron cores. Openings of the E-shaped permeance iron cores face gaps and evenly distributed on a ring. The permanent magnets undergo tangential magnetizing and magnetizing directions of two adjacent permanent magnets are opposite. Fault-tolerance teeth provide magnetic return paths for the permanent magnets and the armature winding. The armature winding transversely span on two sides of an armature tooth iron core unit of the stator. One set of the floating windings are composed of two sets of floating coils. Two sets of the floating coils are respectively wound on the fault-tolerance teeth of the X axlix direction and the Y axis direction. The stator permanent magnetic flux-switching bearing-free motor with the E-shaped teeth is simple in structure like a bearing-free switch reluctance motor and has high efficiency and high power density like a bearing-free rotor permanent magnetic motor.

The invention discloses an ultra-shallow buried tunnel cover-excavation construction method. According to the technical scheme, first, ground transportation for construction is evacuated; fender pile operation is performed on the two sides of an underground project to be implemented; a load-bearing beam and a structural top plate are manufactured on the top of a pile foundation, and then road surface traffic is restored; the position below the structural top plate is excavated to reach the elevation of a structural bottom in a three-step excavation mode, and soil supports between fender piles are constructed at the same time; a cushion layer and a bottom waterproof layer are reinforced; the major structure and the remaining waterproof layer of the underground project are implemented; sand is blown back so that a gap between a cover plate and the major structure can be backfilled with the sand. Compared with the prior art, the time for occupying a road because of construction is shortened, and influences on the external environment of construction are small; the horizontal displacement of the structure is small; the structural plate is used for excavation of a foundation pit so that a temporary support can be omitted; influences caused by external weather are small; the collapse risk of the ultra-shallow section underground project and the loss risk of a third party are avoided.

The invention discloses a method for acquiring terminal capability in a dual-connection system. The method includes: when a user terminal needs to carry out intra-system pilot frequency switching, enabling the first main base station to judge whether the target frequency point is in a frequency band combination of the current user terminal capability information or not; if the target frequency point does not exist or the frequency band combination capability information corresponding to the target frequency point is not found, acquiring a user terminal capability message to obtain corresponding frequency band combination capability information; adding the frequency band combination capability information corresponding to the measurement report or the newly obtained target frequency point to the previous user terminal capability information, bringing the information to a second main base station in a switching request, and sending a reconfiguration message to a first main base station by the second main base station according to whether to configure inter-system measurement or configuration of an inter-system auxiliary cell; and enabling the user terminal to access the second main base station and the auxiliary cell through the reconfiguration message, and establishing double connections. According to the method, on the premise of not increasing the switching delay, the target base station can quickly obtain the frequency band combination, the operability is high, and the realization is simple and effective.

The invention discloses a water-based crack lacquer as well as a preparation method and a construction method thereof. The water-based crack lacquer comprises a water-based crack priming lacquer and a water-based crack finishing lacquer, wherein the water-based crack priming lacquer comprises the following raw materials: 75-90% of a water-based cationic acrylic or polyurethane emulsion, 5-20% of water, 2-5% of an alcohol ether cosolvent, 1-3% of a rheological agent and 0.5-1% of a defoaming agent; the water-based crack finishing lacquer comprises the following raw materials: 75-90% of a water-based anionic acrylic or polyurethane emulsion, 3-20% of water, 2-9% of an alcohol ether cosolvent, 1-3% of a rheological agent and 0.5-1% of a defoaming agent. According to the water-based crack lacquer, the cationic priming lacquer and the anionic finishing lacquer are used; the emulsification mechanisms of the priming lacquer and the finishing lacquer are different; after the finishing lacquer permeates through the priming lacquer, the cations during the nucleation contact with the anions, and the cations and the anions interact with each other to ensure that the finishing lacquer cannot form a continuous lacquer film so as to show the color of the base material. The water-based crack lacquer has the characteristics of being environment-friendly, tasteless, basically free of environment influence during construction, energy-saving and emission-reducing.

The invention relates to a stator permanent magnetic flux-switching bearing-free motor with U-shaped teeth. The stator permanent magnetic flux-switching bearing-free motor with the U-shaped teeth is simple in structure, fastened in rotor and high in power, efficiency and reliability. The stator permanent magnetic flux-switching bearing-free motor with the U-shaped teeth comprises a stator and a rotor. The rotor is arranged inside or outside the stator. The rotor and the stator are of doubly-salient structures. Multiple-phase armature windings which are symmetrically arranged, floating windings which respectively control an X axis direction and a Y axis direction and a permanent magnet are arranged on the stator. The armature windings and the floating windings are composed of concentrated coils. Each coil spans in grooves of two sides of a stator iron core unit which is composed of two U-shaped permeance iron cores and a permanent magnet in between. The floating windings are only wound on the stator iron core unit wound by a coil of an A-phase armature winding. According to the stator permanent magnetic flux-switching bearing-free motor with the U-shaped teeth, based on advantages of a traditional flux-switching permanent magnetic motor, the stator permanent magnetic flux-switching bearing-free motor is simple in structure like a bearing-free switch reluctance motor and has high efficiency and high power density like a bearing-free rotor permanent magnetic motor and high theoretic and practical value.

The invention provides a road condition detection system based on vehicle GPS data, and the road condition detection system makes the best of the big data thinking and has the advantages of low cost, easy promotion, stability, reliability and the like. The road condition detection system based on the vehicle GPS data comprises a timer, a GPS data acquisition module, a map matching module, a vehicle unit speed calculation module and a comprehensive statistic module. GPS coordinates of different floating vehicles driving in a road network and marked time stamps are acquired in real time, the GPS coordinates are matched with coordinates in a preset road section in a map, then time and distance differences of the vehicles driving on the road section are calculated based on the GPS coordinates of the floating vehicles and the marked time stamps, thus the average driving speed of the floating vehicles on an original matching road section can be obtained, and statistics are conducted on the average driving speed of all the floating vehicles on the road section. In this way, the road condition of the road section is determined.

The invention relates to a power station arrangement method, in particular to a mountain land photovoltaic power station arrangement method. According to the mountain land photovoltaic power station arrangement method, Google globe software and ArcGIS software are used for completing sloping field modeling, a TIN topographic map is generated, and therefore manpower consumption and material resource consumption are reduced; analogy computation is carried out on the TIN topographic map of a mountain land area through sunlight analysis software so that the generating-capacity computing accuracy can be improved; the mountain land trend is sufficiently depended, photovoltaic arrays are arranged along a mountain, the amount of steel used in supports and the occupied area are reduced, the construction difficulty is reduced, a large amount of capital is saved, and influences on the generating capacity are not serious; shadow contour analysis is carried out on the TIN topographic map of the mountain land area through the sunlight analysis software, locating points of the arrays are determined, and the effective method which is rapid and convenient to use is provided for northern hemisphere sloping field photovoltaic arrays.

The invention discloses a pulse signal detection method based on multi-pulse envelope spectrum matching. The method comprises the following steps: step 1, acquiring a sampling data sequence of a to-be-processed pulse signal; 2, calculating discrete Fourier transform of a sampling data sequence; 3, generating filter parameters according to known pulse signal frequency parameters; 4, performing frequency domain filtering on the multi-pulse signal by utilizing the generated filter parameters; 5, extracting an envelope of the multi-pulse signal after frequency domain filtering; 6, calculating theamplitude spectrum of the envelope by using Fourier transform; and 7, carrying out detection judgment on the pulse signal by utilizing the multi-pulse signal envelope spectrum. According to the multi-pulse detection method, the pulse string signal envelope is extracted through frequency domain filtering, high signal-to-noise ratio gain can be obtained, the envelope spectrum of the multi-pulse signal is matched with the ideal periodic rectangular signal frequency spectrum, the matching result is detected and judged, the detection probability of the pulse signal can be improved, and the false alarm probability can be reduced.

The invention discloses a preparation method of a high-uniformity copper-indium-gallium-selenium (CIGS) absorbed layer, which is characterized by comprising the following steps: preparing printing ink by using CIGS containing different particle sizes or binary, ternary and quaternary alloy nanoparticles thereof, preparing the CIGS absorbed layer of a thin film solar cell by using a simple multilayer jet-printing method, and enhancing the grain structure and film forming uniformity of the CIGS absorbed layer through rapid heat treatment. In the invention, the CIGS absorbed layer is prepared under a non-vacuum condition, thus avoiding using expensive vacuum equipment; and the preparation method has the advantages of simple process and easy control and can help obtain the high-uniformity CIGS absorbed layer.

The invention discloses a method for arranging a non-motor vehicle stop-in-advance line at a two-phase signal-controlled intersection. According to the method for arranging the non-motor vehicle stop-in-advance line at the two-phase signal-controlled intersection, the feasibility of the arrangement of the stop-in-advance line is judged primarily by inputting the actual geometrical characteristic of the intersection, the flow of motor vehicles and the flow of non-motor according to the characteristics such as the time for the motor vehicles to catch up the non-motor vehicles; a decision rule is set according to the target that the traffic capacity at the intersection is maximized, the fact whether it is suitable to arrange the stop-in-advance line at the intersection is judged through calculation, and the distance between the stop-in-advance line and the intersection and the feasibility that the signals are trigged in advance are calculated; a stop line at the position of an entrance lane of the intersection is re-designed according to the characteristic information of the two-phase intersection, and thus optimization of the motor vehicle and not-motor vehicle comprehensive traffic capacity is achieved.

The invention relates to a lignite-drying and quality-improving process for preparing superheated steam from waste heat steam. The process comprises the following operation steps of: firstly, providing a heat source for a heat energy device for preparing the superheated steam from the waste heat steam by using high-temperature flue gas produced by a hot-blast stove; secondly, recycling, purifying and refining waste heat steam produced by a normally-running energy-saving cylindrical lignite-drying and quality-improving device; thirdly, preparing high-temperature superheated steam by using the heat energy device for preparing the superheated steam from the waste heat steam; fourthly, drying wet-based lignite and improving quality by using the energy-saving cylindrical lignite-drying and quality-improving device; and finally, recycling the waste heat steam produced in a drying process by the recycling, purifying and refining steps. The process uses the waste heat steam to dry the lignite and has the characteristics of reasonable design and simple, convenient and smooth route. The device has the characteristics of optimized design, compact structure, small floor area, a small amount of investment, low running cost, high yield, large dehydrating range, safe running, energy conservation, capability of saving power, lowering consumption and reducing emission, wide application range of quality-improved lignite and the like.

The invention relates to a three-dimensional parking device increasing vehicle parking places. The device is especially suitable to be used for a garage which needs to increase vehicle parking places and has space on a height direction. The device mainly comprises a framework 5, a tray 9, vehicle wheels 6, a translation motor 12, and a lifting motor 13. The translation motor 12 and the lifting motor 13 are installed on the top or the side wall of the framework 5. The vehicle wheels 6 are installed on the lower part of the framework 5. The lifting motor 13 drives the tray 9 to slide up and down along a stand column. The translation motor 12 drives the vehicle wheels 6. Under the condition of not increasing land occupation area, parking number can be increased.

The invention discloses a construction method of rotary bored pile deep hole blasting and tube rotary excavation obstacle removal, and specifically discloses the steps of the construction method, including pre-construction preparation, surveying and positioning, blasting hole setting-out, drilling, charging, deep hole blasting, deslagging or tube rotary excavation obstacle removal, burying pile casings, injecting mud, drilling and excavating soil, primary hole clearing, putting reinforcement cages, inserting tubes, and secondary hole clearing. The construction method has the advantages of high construction speed, high construction quality and wide applicability to soil layers, and is often used as a preferred process during emergency rescue in case of damage of highways, railways and bridges.

The invention discloses a chelating adsorbent for blood purification and a preparation method for the chelating adsorbent. The adsorbent comprises a macromolecular carrier which is grafted with a copolymer of maleic anhydride and styrene, vinyl acetate or vinyl pyrrolidone. According to an adsorbing material, a charge transfer complex can be formed by virtue of maleic anhydride and vinyl monomers and is grafted with a copolymer of maleic anhydride, so that the grafting amount of maleic anhydride is improved to a great extent; after the adsorbing material is hydrolyzed, the hydrophilicity of the adsorbing material can be improved so as to improve the blood compatibility. The maleic anhydride obtained by hydrolysis can be chelated with heavy metal ions in blood to form a relatively stable seven-membered ring structure, so that the selective absorption capacity on the heavy metal ions is improved, and therefore, other electrolyte cations are not greatly influenced while the heavy metal ions are removed from blood.

The invention relates to a device for achieving power station peak load regulation with molten salt heat storage and a working method thereof, and belongs to the technical field of power station peak load regulation energy storage. The device comprises a molten slat heat storing and releasing system, a steam generation system and a traditional power generating system. The molten slat heat storing and releasing system is connected with the steam generation system and comprises a molten salt tank, a molten salt heat storage pump, a first molten salt valve, a molten salt heat releasing pump and a second molten salt valve. The steam generation system refers to a steam generator. The traditional power generating system comprises a boiler, a steam turbine, an electric generator, a condenser, a water feeding pump and the like. According to the device for achieving power station peak load regulation with molten salt heat storage and the working method thereof, high-temperature heat storage capacity of molten salt is utilized, heat energy of residue steam of a boiler is stored, the heat energy can be converted into high-temperature and high-pressure steam for power generation again when required and is adapted to the power station peak load regulation needs and particularly suitable for power station stable operation under the ultralow load condition; the device and the working method thereof have the advantages that the system is simple, peak load regulation is convenient and fast and economic efficiency is high; and the influence on an original system is small.

The invention relates to the field of environment protection, in particular to an organic polluted site in-situ oxidation repairing system and technology. The system comprises a movable box type platform, a control system, an ozone system, a monitoring system and a hydrogen peroxide system. According to the method, a pressurizing pump is utilized for pulsed injection of the ozone and the hydrogenperoxide into a polluted area in batches, and organic matter pollutants are thoroughly degraded through the coordinated oxidization action between the ozone and the hydrogen peroxide. The organic polluted site in-situ oxidation repairing system and technology are mainly used for repairing polluted soil and underground water and have the beneficial effects that mobility is achieved, disturbance islittle, secondary pollution is avoided, rapidness and high efficiency are achieved, operation is simple, and cost is low.

The invention relates to a contact and an arc extinguishing system for a universal type low-voltage circuit breaker. The contact and the arc extinguishing system for the universal type low-voltage circuit breaker comprise a moving contact, a stationary contact, a stationary contact arc striking board, a moving contact arc striking board, an arc extinguishing grille sheet set composed of a plurality of grille sheets and a contact arc extinguishing system composed by an air outlet channel and an air outlet at the upper end of the arc extinguishing grille sheet set, wherein, the moving contact, the stationary contact, the stationary contact arc striking board, the moving contact arc striking board and the arc extinguishing grille sheet set are fixed on a moving conducting rod. A middle grille sheet in the arc extinguishing grille sheet set extends to the direction of the contacts and protrudes forwards. Due to the fact that the middle grille sheet in the arc extinguishing grille sheet set extends to the direction of a contact area, an electric arc contacts the extended grille sheet in advance in the process of moving to an arc extinguishing chamber, and under guidance of the grille sheet, the electric arc enters into other grille sheets in the rear portion smoothly. According to the structure, due to the fact that only one grille sheet is extended, a contact area magnetic field is slightly influenced, and short time tolerant property of the circuit breaker is not influenced. Due to the fact that the extended grille sheet can divide an air stream entering into the arc extinguishing chamber into two streams, namely, a front stream and a rear stream, in the process of breaking, drive action of the air flow to the electric arc is improved, the electric arc is pushed to enter into the arc extinguishing chamber of grille sheets and opening and breaking performance of the circuit breaker is improved.

An environment-protecting type rubber wood protection (pest-resisting and fungi-resisting) method is characterized by using 2.5%-5.0% borax liquor to implement vacuum pressure treatment of fresh rubber wood, and when the said wood is treated, the used vacuum degree is -0.07--0.09 MPa, pressure is 1.1-1.3 MPa, the pressurizing time is dependent to the thickness of wood, and the pressurizing time of 3.0-8.5 cm thickness is 30-70 min. After the wood is treated, it can be prompty stached and dried in the air for 8-12 days, then dried in drying kiln to make its water content be reduced to 10%-8%. The wood treated by the said invention can prevent moth damage, and does not produce blue stain, so it is suitable for making furniture, and its used chemical preparation is low in toxicity, and low in cost, and its preparation is simple.

The invention provides a high-temperature rigidity measuring method based on electrified heating, and relates to a metal material rigidity measuring method. The high-temperature rigidity measuring method comprises the steps of 1) preparing a rigidity meter, an adjustable direct-current voltage-stabilized source, two heating electrodes and a temperature sensor; 2) placing a metal work piece to be measured on a measuring table of the rigidity meter, and adjusting the position; and arranging the two heating electrodes on the work piece to be measured; connecting the two heating electrodes with the adjustable direct-current voltage-stabilized source through lead wires; forming a loop through both electrodes of the adjustable direct-current voltage-stabilized source, the two heating electrodes, and the material of the metal work piece to be detected between the two heating electrodes; and arranging the temperature sensor beside a rigidity to-be-measured point of the metal work piece to be measured; 3) turning on the adjustable direct-current voltage-stabilized source, and heating the metal work piece to be measured in an electrified manner; 4) starting to measure the rigidity of the metal work piece to be measured when the measured temperature of the temperature sensor reaches a desired temperature value; 5) recording rigidity measurement data, and repeating the steps 4) and 5) if the rigidities of the metal work piece under a plurality of the temperature values need to be measured; and 6) switching off the adjustable direct-current voltage-stabilized source.

The invention provides a space debris lateral angular velocity suppression and spin direction control method. The space debris lateral angular velocity suppression and spin direction control method includes the following steps that firstly, a dynamical equation is derived; secondly, a controller is designed; thirdly, stability of the controller is analyzed; and fourthly, numerical value simulationverification is carried out. Through the steps, the target satellite attitude dynamical equation derived in the first step and the tension switching controller designed in the second step are combined to obtain the control method of restraining the transverse angular velocity of a target satellite, and a tether vibration dynamical equation derived in the second step and a PD controller designed in the third step are combined to obtain the method for controlling swinging and vibrating of a tether. According to the space debris lateral angular velocity suppression and spin direction control method, through switching control of two constant tension parts, the lateral angular velocity of the target satellite can be suppressed through the designed switching controller, and swinging and vibrating of the tether can be controlled by using a simple PD control law; the numerical value simulation is carried out in the fourth step, and thus feasibility and correctness of a control system are verified; and swinging and vibrating of the tether can be effectively suppressed while the lateral angular velocity of the target satellite can be suppressed.

The invention belongs to the preparation technology and the catalytic field of nanometer materials, and particularly discloses a synthetic method of an ultrathin self-assembly Pd nanometer wafer. Palladium acetylacetonate is adopted as a precursor, N, N-dimethylformamide and water are adopted as a solvent, polyvinylpyrrolidone is adopted as a stabilization agent, carbon monoxide gas is adopted as a reducing agent, potassium iodide and anhydrous sodium acetate are adopted as a shape control agent, and the ultrathin self-assembly Pd nanometer wafer is obtained in a synthetic manner through an oil bath heating method. In a reaction system, the concentration of palladium acetylacetonate is 8.2 mmol.L<-1>, the molar ratio of palladium acetylacetonate to polyvinylpyrrolidone to potassium iodide to anhydrous sodium acetate is 1:9:4:4, the flow speed of CO is 0.3 mL.sec<-1>, a reaction is carried out in an oil bath of 100 DEG C for 3 h, and the ultrathin self-assembly Pd nanometer wafer is obtained. The synthetic method is simple, pollution is little, the obtained ultrathin self-assembly Pd nanometer wafer is uniform in shape and size, and the prepared ultrathin self-assembly Pd nanometer wafer can be applied to the fields of biological sensing, light conduction, electrochemistry and the like.

The invention discloses an IPTV system, and relates to the technical field of IPTV services. The IPTV system comprises micro-service functional modules, a registration management module, a monitoring service module, an access management module and an EPG display module. The IPTV system disclosed by the invention comprises multiple micro-service functional modules; each micro-service functional module is used for completing a service function of an IPTV service; when development and modification of a new requirement or a new function exist, only the corresponding micro-service functional module needs to be modified; influence on the original service of the IPTV system is low; and the new service online time is shortened. The invention further discloses an IPTV service implementation method by adopting the IPTV system.

The invention relates to a device for detecting the stroke and speed of a slide of forging and pressing equipment. The device comprises a base, a linear guide rail, a fixed poking plate and a photoelectric switch, wherein a part close to the top end and a part close to the bottom end on the base are provided with an upper bearing block and a lower bearing block respectively; a first shaft and a second shaft are fixed in the upper bearing block and the lower bearing block through a first bearing; synchronous belt pulleys are fixed on the first shaft and the second shaft through flat keys, and a synchronous belt is connected between the two synchronous belt pulleys; the right side of the upper bearing block is provided with a coder base, and a coder is fixed on the right side of the coder base; the left side of the synchronous belt is provided with the linear guide rail parallel with the synchronous belt; the linear guide rail is provided with a fixed base; the top part of the fixed base is provided with an upper pressure plate; and the right end of the upper pressure plate is fixed with the synchronous belt through a clamping plate. The device has the following advantages that: the photoelectric switch can send out a shutdown signal when the slide moves to the maximum stroke; the safe reliability is high; and the stroke and the speed of the slide of the forging and pressing equipment can be accurately detected according to the pulses sent out by the coder.

The invention discloses a desert area saline-alkali soil amelioration modifying agent and a preparation scheme. The desert area saline-alkali soil amelioration modifying agent is prepared from raw materials in parts by mass: 5 to 18 parts of pH conditioning agent, 15 to 36 parts of inorganic fertilizer, 28 to 45 parts of organic fertilizer, 2 to 4 parts of halophilic bacteria, 4 to 6 parts of rhizopus, 1 to 3 parts of humic acid, 3 to 5 parts of actinomycetes, 2 to 4 parts of rhizobium, 3 to 7 parts of yeast, 0.01 to 0.04 part of auximone and 1 to 2 parts of deodorant. The desert area saline-alkali soil amelioration modifying agent disclosed by the invention can obviously improve the germination rate and the survival rate of plants, reduces a pH value and salt content of saline-alkali soil, improves organic content of the soil and enables the soil to be more suitable for plant growth.

The invention belongs to the technical field of inorganic nanomaterial preparation and particularly discloses a rhodium nano nail cluster and a synthesis method of the rhodium nano nail cluster. According to the method, the Rh nano nail cluster with unique morphology and a unique structure is synthesized by a solvothermal method by taking rhodium acetylacetonate as a precursor, oleylamine and ethylamine as a solvent, a reducer and a morphology control agent and polyvinylpyrrolidone as a stabilizing agent. The prepared Rh nano nail cluster comprises 12 Rh nano nails; nail caps of the Rh nano nails are pentagonal pyramids; nail studs are pentagonal prisms; the single Rh nano nail is 25-105nm in length and 7-15nm in width; the prepared Rh nano nail cluster is uniform in particle size, large in specific surface area and high in atom utilization ratio and shows good electrocatalytic activity; and compared with the traditional Rh catalyst, the electrocatalytic activity is improved obviously.

The invention discloses a downlink sending method suitable for a NOMA system, which comprises the following steps: a sending end dividing data sequences which need to be sent to users 1 and 2 into groups with the same length, and each group containing M pieces of data; the sending end distributing sending power P1 and P2 according to the strength of the downlink channels of the user 1 and the user2, and setting P1<P2; keeping the data in the user group 2 unchanged, performing cyclic shift on the data in each group of the user 1 by the sending end, and calculating to obtain M total average sending powers; the sending end selecting one shifting mode with the strongest average sending power to send a signal, and informing the receiving end of the user 1 of the shifted value through the control channel; a receiving end of the user 1 estimating a receiving signal of the user 2, and then demodulating the signal after eliminating the interference of the receiving signal; and the receiving end of the user 2 directly demodulating the received signal. According to the invention, the bit error rate of a receiving end is effectively reduced, and a sending method which is fast, reliable, low in implementation complexity and suitable for NOMA and other non-orthogonal multiple access technologies is provided.

The invention discloses a reminding method based on an intelligent wearing device, system and the intelligent wearing device. The reminding method comprises the following steps: positioning the current position information, and judging whether the current position belongs to the preset position; when the current position does not belong to the preset position, judging the distance between the intelligent wearing device and a preset intelligent device through the detection of the intensity of a wireless communication signal between the intelligent wearing device and the preset intelligent device, and respectively comparing the distance between the intelligent wearing device and the preset intelligent device with the first preset distance and the second preset distance, thereby making the reminders at different levels to the user according to the comparison results, wherein the first preset distance is greater than the second preset distance. Through the adoption of the reminding method based on the intelligent wearing device, system and the intelligent wearing device, the user can be well reminded to carry the intelligent device.