37results about How to "Achieve excitation" patented technology

The invention discloses an efficient multipath laser probe detecting system and method. The detecting system can divide laser sources into multiple paths and transmit the laser sources to multiple to-be-detected points through optical fibers, corresponding spectral signals are transmitted back to the detecting system after laser plasma is generated through excitation, finally, multi-point and simultaneous on-line detection by one laser probe instrument is finally realized, the optical fibers are used for transmitting laser and the spectral signals, accordingly, the anti-jamming capability of a laser probe in the severe environment can be improved, and the application cost of the laser probe instrument can be substantially reduced. The efficient multipath laser probe detecting system is particularly suitable for a large industrial process containing multiple production lines, has the on-line monitoring capability for multiple elements of a product on the production lines and facilitates popularization and generalization of a laser probe technology, and the application cost of the laser probe instrument can be substantially reduced.

The invention discloses a preparation method of iron-doped barium titanate nanoparticles. The method comprises the following steps: taking barium hydroxide octahydrate and titanium bis(ammonium lactato)dihydroxide as a barium source and a titanium source; providing doped iron ions by utilizing soluble iron salt; firstly, dissolving the soluble iron salt into de-ionized water to form a mixed precursor solution; then regulating the pH (Potential of Hydrogen) value of the precursor solution by utilizing a 5 M sodium hydroxide solution; taking a proper amount of oleic acid and tert-butylamine as asurfactant and an additive; carrying out hydrothermal synthesis under the condition of 180 to 220 DEG C to obtain BiTi1-XFeXO3 (x is equal to 0.01 to 0.15) cubic-phase nanoparticles. The method provided by the invention has relatively low energy consumption and is simple and convenient to operate; the BiTi1-XFeXO3 (x is equal to 0.01 to 0.15) nanoparticles prepared by the method are tested and characterized as a cubic phase with high purity and good crystallinity. Compared with non-doped barium titanate, the iron-doped barium titanate nanoparticles have a relatively low optical band gap (2.6eV), a regular cubic shape and a relatively small crystal grain size (20 to 40 nm), so that the iron-doped barium titanate nanoparticles have relatively good photocatalytic activity and have a wide application prospect in the fields of scientific researches and electronic industries.

The invention discloses an epitaxy method for growing a blue light emitting diode on an m-plane gallium nitride substrate. The invention relates to the technical field of semiconductor epitaxial layergrowth. The method comprises the following steps of: growing a non-doped gallium nitride homogeneous epitaxial film infiltration layer at the top of an m-plane GaN substrate by using a metal organicchemical vapor deposition method; sequentially generating an N-type conductive GaN epitaxial layer, a GaN stress regulation and control layer, a GaN / InGaN superlattice electron storage layer, an InGaN / GaN multi-quantum well light-emitting epitaxial layer and a composite P-type GaN layer from bottom to top by using a metal organic chemical vapor deposition method; according to the invention, m-plane homoepitaxy is realized to obtain a flat surface, and effective incorporation of In in the InGaN layer is realized to realize blue light quantum well excitation.

A dewatered sludge solidifying agent, a preparation method and a use method, belonging to the technical field of environmental engineering, the phosphate rock, carbide slag, tailings slag and marble slag in the dewatered sludge solidifying agent are (1-3) by mass percentage: (1 ~3):(1~3):(1~3), the preparation method comprises: washing, drying, crushing and ball milling the phosphate rock, calcium carbide slag, tailings slag and marble slag respectively, and mixing them in proportion uniform. The method of using the dewatered sludge solidifying agent includes: mixing the dewatered sludge and the added dewatered sludge solidifying agent in proportion to achieve solidification. The compressive strength of the cured dewatered sludge can reach 78KPa after 3 days of curing under normal temperature and pressure, and the pH of the leachate is between 5 and 10. The dewatered sludge solidifying agent of the present invention uses solid waste as a raw material, has wide sources of raw materials and low cost, and utilizes the chemical properties of the solid waste itself and the activity excitation between them to realize the solidification and stabilization of the dewatered sludge.

The invention discloses a lipase nano-sized polymer biocatalyst particle and a preparation method thereof. The method comprises the following core steps: chemically modifying the surface of a lipase with glycidyl methacrylate which is used as a hydrophobic reagent, introducing a C-C double-bond group, and then, without needing to separate intermediates, directly adding a vinyl monomer containing C-C double bonds as a raw material to initiate the free radical polymerization to obtain the target product. The method is carried out under mild production conditions, has a simple preparation process, can effectively prevent enzyme inactivation in the middle modification procedure to ensure high enzyme activity, and can also greatly improve the heat stability of the lipase nano-sized polymer biocatalyst particle. Besides, the novel method simplifies the procedure of separating the intermediates to reduce the production cost, and is favorable for the large-scale industrial production.

The invention aims at providing a system and a method for tracking interface waves which are echoes generated between water and workpieces and also called as water layer waves. The system comprises an FPGA module, an ultrasonic transmission module, an ultrasonic reception module, an AD sampling module, a gate position control assembly and a gate width control assembly, wherein the ultrasonic transmission module is used for generating high voltage and transmitting a high-voltage signal to a transducer; the ultrasonic reception module is used for receiving an ultrasonic signal converted electric signal in the transducer; the AD sampling module is used for sampling the received electric signal into a digital signal and sending the digital signal to the FPGA module; the gate position control assembly is used for determining the effective starting position of the sampling; the gate width control assembly is used for determining the range of the effective starting position of the sampling. The system and the method for tracking interface waves are specifically capable of realizing the following functions: (1) exciting an ultrasonic probe and sampling the echoes; (2) tracking the interface waves; (3) simplifying the original ultrasonic data and retaining the data effective to the workpiece detection.

The invention discloses an efficient multipath laser probe detecting system and method. The detecting system can divide laser sources into multiple paths and transmit the laser sources to multiple to-be-detected points through optical fibers, corresponding spectral signals are transmitted back to the detecting system after laser plasma is generated through excitation, finally, multi-point and simultaneous on-line detection by one laser probe instrument is finally realized, the optical fibers are used for transmitting laser and the spectral signals, accordingly, the anti-jamming capability of a laser probe in the severe environment can be improved, and the application cost of the laser probe instrument can be substantially reduced. The efficient multipath laser probe detecting system is particularly suitable for a large industrial process containing multiple production lines, has the on-line monitoring capability for multiple elements of a product on the production lines and facilitates popularization and generalization of a laser probe technology, and the application cost of the laser probe instrument can be substantially reduced.

The invention discloses a motor voltage injection method, electronic equipment and a storage medium. The motor voltage injection method comprises the following steps: acquiring an initial voltage set value and a magnetic pole position angle of a target motor; injecting a first voltage to a motor winding of the target motor based on the magnetic pole position angle and the initial voltage set value; collecting a historical feedback current and a current feedback current; determining a predicted feedback current according to the feedback current at the current moment and the historical feedback current; determining whether an overcurrent risk exists based on the predicted feedback current; if yes, reducing the initial voltage set value to obtain an adjusted voltage set value; and based on the magnetic pole position angle and the adjusted voltage set value, injecting a second voltage into the motor winding until it is determined that no overcurrent risk exists, and obtaining a target voltage set value for saturation model identification. The technical problem that the overcurrent risk is high in the inductance identification process in the prior art is solved.

Embodiments of the present invention provide a cell optimization method, device, storage medium, and source base station. In the solution of the embodiment of the present invention, the operation data of the source cell is obtained; according to the operation data, the high load level of the source cell is generated; according to the high load level, the source cell is optimized, and the data only needs to be obtained by obtaining the utilization rate of physical resource blocks. Preparation, data preparation is relatively simple and highly feasible; targeted optimization of source cells according to the high load level can effectively improve the response speed and resource utilization rate of high-load scenarios, realize traffic stimulation, and greatly improve the optimization efficiency.

The invention discloses a tantalate-based up-conversion luminescence material and a preparation method thereof. The chemical composition of the material is Y10-x-yErxYbyTa4O25, wherein x is the molar percentage of doped erbium ions Er<3+>, y is the molar percentage of doped ytterbium ions Yb<3+>, and the sum of x and y is not smaller than 0.001 and smaller than 10. The material has a green luminescence peak nearby 550nm under the excitation of 970nm infrared laser and has stable performances and high up-conversion efficiency, the luminous intensity of the material enhances with the increase of excitation diode energy, the matrix structure is stable, the concentration of doped rare earth is high, and the high concentration is in favor of enhancing the luminescence efficiency and realizing excitation under high power. The material is prepared through mixing compounds containing elements required by the synthesis of the luminescence material in proportion, and by adopting a high temperature calcining, chemical solution or coprecipitation technology. The method has the advantages of flexibility, abundant sources of raw materials, low price, simple preparation process, and low production cost.

The invention discloses a plasmon enhanced deep ultraviolet detector, its preparation method and application. The plasmon-enhanced deep ultraviolet detector includes a heterojunction, a spline electrode and a periodic metal particle array, the spline electrode is formed on the heterojunction, and the periodic metal particle array forms between the pinion electrodes. The invention utilizes the localized plasmons generated by the metal particles and the plasmon periodic diffraction resonance mode generated by the metal particle array to couple the incident light in the two ultraviolet bands to the metal nanostructure to realize the detector surface The light field of the two ultraviolet bands is enhanced, the absorption rate of the detector material to the incident light is improved, and the photoresponsivity of the deep ultraviolet detector to the two wavelengths is improved; and the plasmon resonance can be realized by adjusting the period and size of the metal particles Coupling with GaN / AlGaN detector detection wavelength.

The invention discloses an epitaxial method for growing a blue light-emitting diode on an m-plane gallium nitride substrate, and relates to the technical field of semiconductor epitaxial layer growth, including growing a non-doped layer on the top of an m-plane GaN substrate by using a metal organic chemical vapor deposition method. GaN homoepitaxial film wetting layer, and then use metal organic chemical vapor deposition method to sequentially generate N-type conductive GaN epitaxial layer, GaN stress regulation layer, GaN / InGaN superlattice electron storage layer, InGaN / GaN multi-quantum well light-emitting epitaxial layer and composite P-type GaN layer; the invention realizes m-plane homoepitaxy to obtain a smooth surface, and realizes effective incorporation of In in the InGaN layer to realize blue light quantum well excitation.

The invention discloses a curing agent for heavy metal pollution soil, and preparation and application methods thereof. The curing agent is prepared from the following materials in percentage by mass: 30 to 55 percent of steel slag powder, 20 to 50 percent of quicklime powder and 5 to 30 percent phosphate-loaded charcoal. The curing agent has the advantages that firstly, the curing agent can obviously reduce the heavy metal mobility and the toxicity leaching quantity in the heavy metal polluted soil, and is particularly applicable to acid pollution sites with the high heavy metal content and various contaminant types; after the polluted soil restoration, the curing agent can be used as environment-friendly materials to realize the resource utilization; the environment risk of the pollution sites in the secondary development and utilization can be obviously reduced; meanwhile, the raw materials of the curing agent can be easily obtained; the cost is low; the preparation is simple; the use is convenient; the effect is stable; the curing agent can be popularized in a large range and can be applied to the curing stabilization restoration of the composite pollution sites.

The invention discloses a curing agent for compound heavy metal polluted soil as well as preparation and application methods of the curing agent. The curing agent is prepared from the following materials in percentage by mass: 40 to 65 percent of steel slag powder, 5 to 25 percent of light calcined magnesia and 20 to 45 percent of phosphate activated bone powder. The curing agent has the advantages that firstly, the curing agent can obviously reduce the mobility and the toxicity leaching amount of heavy metals in the heavy metal polluted soil, and is particularly applied to an acidic polluted land which is high in heavy metal content and contains various pollutants; after the polluted soil is repaired, the curing agent can be used as an environment-friendly material for recycling, so that the environmental risk during secondary development use of the polluted land is obviously reduced; moreover, as the raw materials are readily available, the curing agent is low in cost, easy to prepare, convenient to use and stable in effect and can be popularized and applied to curing and stabilizing repairing of the compound polluted land in a large scale.

The invention discloses a fluorescent molecular imaging system based on an LED light source and an imaging method thereof. The fluorescent molecular imaging system based on the LED light source comprises a light source device, an animal bed, an imaging device and a computer image processing system, wherein the light source device comprises the light source, a light source frame, a switch set, an exciting light filter set and lenses. LEDs are adopted in the light source, the light source comprises multiple sets of LED arrays of different light-emitting wave lengths, and each set of the LED array is connected to the switch set. According to the fluorescent molecular imaging system based on the LED light source and the imaging method thereof, the multiple sets of the LED arrays of different light-emitting lengths are adopted in the light source, the manufacturing technology is simple, price is low, and the LED arrays of different wave lengths can be switched easily according to needs to achieve the excitation of different fluorescent substances. It is firstly proposed that the LEDs serve as the exciting light source of the transmission-type fluorescent molecular imaging system and the exciting light source of a fluorescent molecular tomography system, the imaging system is simple in structure, optical fibers are not needed for transmitting exciting light, and therefore fluorescent molecular tomography can be carried out more efficiently.

The invention discloses a pistol with a firing pin for ignition. The pistol comprises a mounting box hidden in a book; a clamping connecting cavity, opened down, is fixedly formed in the mounting box;connecting side cavities communicate into the left and right end walls of the clamping connecting cavity; a bullet charging cavity communicates into the upper end wall of the clamping connecting cavity; a tube cavity, communicating with external space, communicates into the right end wall of the bullet charging cavity; a bullet shooting cavity, opened up, communicates into the upper end wall of the tube cavity; a bullet pushing cavity communicates into the left end wall of the bullet shooting cavity; and an air guide tube, communicating with the tube cavity, communicates into the right end wall of the bullet shooting cavity. The pistol is simple in structure and convenient to use, adopts a working mode of hiding in the book to realize control of the ammunition charging by a ratchet structure, meanwhile, adopts a linkage mode to realize shooting of ammunitions, and uses high-pressure gas to control shooting of bullet cases so as to improve the equipment reliability.