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74 results about "Shock treatments" patented technology

Solid-state repairing method for hot-end component of gas turbine

The invention belongs to the technical field of gas turbine maintenance, and particularly relates to a solid-state repair method for a hot-end component of a gas turbine, which comprises the following steps: S1, acquiring damage information of the surface of a to-be-repaired matrix; s2, roughening treatment is conducted on a damaged area on the surface of the to-be-repaired base body, and electrochemical activation treatment is conducted on the roughened damaged area; s3, supersonic speed cold spraying treatment is conducted on the treated damaged area, and gradient materials are deposited on the damaged area layer by layer till a compact repairing layer is deposited on the surface of the base body; s4, selective laser remelting treatment is conducted on the compact repairing layer of the damaged area; s5, carrying out laser shock on the dense repair layer subjected to the remelting treatment; and S6, the base body subjected to laser shock treatment is machined till the standard geometric dimension of the base body is recovered. The method can solve the problems of large heat input, matrix damage, insufficient bonding strength and the like in the process of repairing the damaged area of the matrix in the traditional hot working technology.
Owner:CHINA UNITED HEAVY-DUTY GAS TURBINE CO LTD

Method for efficiently and artificially inducing triploid grass carp

The invention discloses a method for efficiently and artificially inducing triploid grass carps, which comprises the following steps: (1) collecting sperms and ova of grass carps, and carrying out artificial insemination; (2) carrying out cold shock treatment on the fertilized eggs of the grass carps, wherein the cold shock treatment is that the fertilized eggs are placed in water at the temperature of 4-6 DEG C for 10-12 minutes; and incubating the fertilized eggs to obtain the triploid grass carp.
Owner:SUN YAT SEN UNIV

Method for removing residual fluorescent liquid before welding of part

The invention provides a method for removing residual fluorescent liquid before part welding, and relates to the technical field of part machining. The method for removing the residual fluorescent liquid before welding of the part comprises the following steps that (1) the part subjected to preliminary flushing is heated and cooled; (2) the cooled part is put into an ultrasonic cleaning machine, a cleaning agent is added for vibration treatment, and then clean water is used for washing; (3) the washed part is dried, and no fluorescent reaction exists when the part is irradiated by a black light lamp; the cleaning agent is prepared from the following components in parts by weight: 10 to 20 parts of hyperbranched polymer grafted modified activated carbon, 10 to 15 parts of modified bentonite and 3 to 7 parts of sodium gluconate. Fluorescent liquid which is not easy to remove in part holes can be thoroughly removed at a time, and repeated cleaning work can be reduced.
Owner:成都国营锦江机器厂

Process for passivating cutting edge of hard alloy milling cutter

The invention is suitable for the technical field of milling cutter machining, and provides a hard alloy milling cutter cutting edge passivation process which comprises the following steps that a passivation solution containing Fe < 3 + > and Zn < 2 + > is prepared, and the passivation solution comprises abrasive particles and a nanometer reinforcing phase; the tool is immersed in a passivation solution to be subjected to chemical-mechanical composite treatment; the cutting edge is subjected to plasma impact treatment; a cutting edge grain boundary is reconstructed through laser irradiation, and atomic-scale reconstruction of the hard alloy cutting edge and multi-scale optimization of structure strengthening are achieved through combination of a chemical-mechanical-energy field composite effect, a metal ion passivation reaction and plasma / laser modification and cooperation of metal ion selective passivation, grain boundary engineering regulation and control and nanometer enhancement. On the basis of chemical passivation, the mechanical performance of the cutting edge of the milling cutter is improved through a composite passivation film generated through Fe < 3 + > / Zn < 2 + > reaction, plasma impact and laser reconstruction are coupled through an energy field, the problems of microdefects and grain boundary weakening are solved respectively, and the strength of the cutting edge is further improved through the synergistic effect of the three.
Owner:ZHEJIANG LANGCHAO PRECISION MACHINERY

Method and composition for biofilm removal

A biofilm shock treatment includes: a zinc ion source and a disinfecting agent. The biofilm shock treatment is configured to weaken a matrix of a biofilm and to disinfect causative microbes while promoting biofilm removal. Optionally, the biofilm shock may include a surfactant and / or a chelating agent.
Owner:PROEDGE DENTAL PROD

Austenitic stainless steel surface strengthening treatment method

The invention discloses an austenitic stainless steel surface strengthening treatment method, and belongs to the technical field of metal material surface modification. The method comprises the following steps: firstly, carrying out laser shock treatment on the austenitic stainless steel, and then carrying out ion nitrocarburizing treatment on the austenitic stainless steel subjected to laser shock treatment; the impact energy of the laser impact treatment is 0-30 J and is not 0. According to the method, the austenitic stainless steel is firstly subjected to laser shock treatment, and then the austenitic stainless steel subjected to laser shock treatment is subjected to ion nitrocarburizing treatment. The laser shock treatment and the ion nitrocarburizing treatment are coordinated and matched, so that the corrosion resistance of the stainless steel can be considered while the hardness and the frictional wear performance are effectively improved, and the austenitic stainless steel with high hardness, good frictional wear performance and good corrosion resistance is obtained.
Owner:JIANGXI MFG POLYTECHNIC COLLEGE

Method for efficiently obtaining homozygous red crucian carp

The invention belongs to the field of fish genetic breeding, and discloses a method for efficiently obtaining homozygous red crucian carp, which comprises the following steps: (1) carrying out artificial false fertilization on eggs of the red crucian carp to obtain fertilized eggs; (2) performing gene editing on the fertilized eggs; (3) incubating the fertilized eggs subjected to gene editing for 18-32 minutes, and then carrying out cold treatment; and (4) incubating the fertilized eggs after cold treatment to obtain the homozygous red crucian carp. According to the method disclosed by the invention, gene editing and gynogenesis methods are comprehensively utilized, the hatching rate, the survival rate and the homozygous rate are high while the high gene editing efficiency is maintained through the early cold shock treatment time and the proper cold shock treatment time, and the gynogenesis red crucian carp mutant with a high proportion can be obtained.
Owner:HUNAN NORMAL UNIVERSITY +1

Laser welding seam post-processing method

PendingCN119710165AMechanical impactWeld seam
The invention relates to the technical field of laser welding, in particular to a laser welding seam post-processing method which comprises the following steps: step 1, standing a laser-welded seam; and 2, at least one time of weld joint mechanical shock treatment is conducted on the weld joint subjected to standing treatment in the step 1. Compared with the prior art, the method has the advantages that equipment used in the method is simple, the process control difficulty is low, and residual tensile stress on a welding seam after laser welding is effectively removed, the grain structure of the welding seam is improved and the corrosion resistance and mechanical property of a welded material are improved through mechanical impact type post-treatment under certain parameters.
Owner:BEIJING FORESTRY UNIVERSITY

ECT anesthesia eeg denoising method based on double-domain interactive attention and mask pre-training

The application discloses an ECT anesthesia electroencephalogram denoising method based on double-domain interactive attention and mask pre-training. The method extracts the electroencephalogram signal after anesthesia induction and before electric stimulation release in the electric shock treatment process, constructs the time domain representation and the frequency domain representation after short-time Fourier transform, models the local time sequence information and the global frequency spectrum information by using the double-domain feature extraction network, and introduces the cross-domain interactive attention mechanism to enhance the reservation ability of effective electroencephalogram components and the suppression ability of artifact noise. Then, the high-fidelity denoised electroencephalogram signal is recovered through the decoding reconstruction module, and the generalization performance of the model in the real clinical scene is improved by combining the supervised pre-training and the mask self-supervised domain adaptation strategy. The method can be used for automatic denoising processing of ECT anesthesia electroencephalogram, and provides a reliable signal basis for subsequent efficacy prediction, brain state evaluation and clinical auxiliary decision-making.
Owner:WUHAN UNIV

A method for promoting the chlorosis and coloration of summer orange

The present invention relates to a method for promoting the chlorosis and coloration of regreening summer orange fruits, comprising the steps of: subjecting the regreening summer orange fruits to a cold shock treatment; and subjecting the cold-shocked regreening summer oranges to a low-temperature treatment for 5-7 days. The method of the present invention achieves chlorosis and coloration of regreening summer oranges by using only the cold shock and low-temperature treatment methods without the use of chemical reagents. The method is simple to operate, low-cost, safe and effective, and the treatment time is short, controlled within 5-7 days. This method provides theoretical guidance and technical support for improving the color quality of summer orange fruits and increasing the benefits for fruit growers.
Owner:HUAZHONG AGRI UNIV

Method for improving residual strength of lithium aluminosilicate glass after damage

The invention belongs to the technical field of glass processing, and particularly relates to a method for improving residual strength of lithium aluminum silicate glass after damage. The method for improving the residual strength of the lithium aluminosilicate glass after damage comprises the following steps: sequentially carrying out first preheating treatment, first molten salt strengthening treatment, first annealing treatment, second preheating treatment, second molten salt strengthening treatment, second annealing treatment, first heat treatment and third preheating treatment on the lithium aluminosilicate glass with surface damage, performing third molten salt strengthening treatment, third annealing treatment, cold and hot shock treatment, second heat treatment and corrosion treatment to obtain the target lithium aluminum silicate glass. And the thickness of the lithium aluminum silicate glass is 2 to 10 mm. The method provided by the invention can significantly improve the residual strength of the lithium aluminum silicate glass after damage, and is simple to operate.
Owner:BAIMTEC MATERIAL CO LTD

Perinereis aibuhitensis triploid induction method

The invention discloses a perinereis aibuhitensis triploid induction method, which comprises the following steps: placing perinereis aibuhitensis fertilized eggs in ice water for cold shock treatment, then carrying out gradient heating to room temperature, selecting sexually mature perinereis aibuhitensis for artificial insemination, cutting female and male perinereis aibuhitensis into pieces in a stainless steel metal filtering cylindrical net in sequence, and carrying out freeze drying to obtain the perinereis aibuhitensis triploid. According to the method, the stainless steel metal filtering cylindrical net is used for assisting the artificial insemination of the perinereis aibuhitensis, the triploid of the perinereis aibuhitensis is induced through cold shock treatment, the perinereis aibuhitensis induction rate is identified to be 80% or above by means of a flow cytometry and tissue slices, the operation is simple, the cost is low, and the method is suitable for large-scale popularization and application. The cost is saved, and the method is effective and can be used for inducing the marine annelids triploid.
Owner:NINGDE NORMAL UNIV

Method for inducing gynogenesis of acrossocheilus fasciatus by using opsariichthys bidens sperms

The invention provides a method for inducing gynogenesis of acrossocheilus fasciatus by using opsariichthys bidens sperms, and relates to the technical field of fish genetic breeding, and the method comprises the following steps: taking acrossocheilus fasciatus ova and inactivated opsariichthys bidens sperms for mixed fertilization, adding water to activate the ova, placing the activated ova in ice water, carrying out cold shock treatment for 10-50 minutes, and then placing the ova in normal-temperature water for incubation and seedling emergence. Heterologous sperms and opsariichthys bidens sperms are used as induced sperms, so that the phenomenon that homologous sperms which are not thoroughly inactivated are mixed to form normal diploids is avoided, and complicated verification is eliminated. By inducing gynogenesis, all-female breeding can be achieved, and the breeding yield is remarkably increased. By utilizing a gynogenesis method to perform acrossocheilus fasciatus improved variety breeding, homozygosis can be quickly realized, the breeding time is shortened, and the method has incomparable superiority. The success of inducing the gynogenesis of the acrossocheilus fasciatus is significant for improving the variety of the acrossocheilus fasciatus and increasing the breeding yield, and the problem that a method for inducing the gynogenesis of the acrossocheilus fasciatus by using the heterologous sperms is lacked in the prior art is solved.
Owner:HANGZHOU XIAOSHAN SEA BREEDING CO LTD

Electric shock treatment equipment

The invention provides an electric shock treatment device, which comprises a stimulation treatment host, a printer and a touch screen, and is characterized in that the stimulation treatment host comprises a control mainboard, an acquisition circuit board, a communication circuit board, an METC power supply rectification board, a constant current power supply, an METC control circuit board and a treatment electrode which are in communication connection with one another; the touch screen is in communication connection with the control mainboard and the printer through the communication circuit board, and the therapeutic electrode is electrically connected with the METC power supply rectifying plate; a touch screen is used as an upper computer to achieve man-machine interaction, operation is simple, and stimulation current with adjustable frequency and amplitude and constant current rectangular waveform is output to a patient for treatment.
Owner:WUHAN YIRUIDE MEDICAL EQUIP

Inflatable system, patient treatment system, shock treatment system, process, and method of use

An inflatable system, a patient treatment system, a shock treatment system, processes and methods of use are presented. The present disclosure is an inflatable device for use in treatment of a patient. More specifically, and without limitation, the disclosure is an inflatable device for treating a patient in medical shock and / or in need of circulation assistance. The present disclosure provides for ease of operation and quick assistance in raising the legs and / or elevating lower extremities of patients for circulation purposes and the like.
Owner:KRAMER PAUL L

Golf club head with textured faceplate and methods of manufacturing the same

Embodiments of a golf club head with a textured strikeface and methods to form said club head through laser shock treatment are generally described herein. The golf club head can comprise a body and a strikeface. The strikeface has a textured front surface, with an array of indentions. Each indention can have a footprint area of between 0.01 μm2 (1×10−8 mm2) to 250,000 μm2 (0.25 mm2). The textured front surface can affect the spin imparted to a golf ball upon impact. Other embodiments may be described and claimed.
Owner:KARSTEN MFG CORP

Laser shock process for improving CrN coating deposition efficiency of aluminum alloy mold

The invention relates to a laser shock process for improving the deposition efficiency of a CrN coating of an aluminum alloy die. The laser shock process comprises the following steps: (1) linearly cutting original die steel into a sample; (2) carrying out heat treatment on the sample, polishing, carrying out ultrasonic cleaning by using an organic solvent, and drying; (3) clamping the sample on a laser shock peening test platform, and carrying out laser shock treatment on the surface; and (4) the sample is placed in a multifunctional nitriding and metalizing furnace to be subjected to coating deposition treatment, and the sample is cooled to the room temperature along with the furnace. The laser shock treatment enables the surface of a sample to generate plastic deformation and increases the surface roughness, a nanocrystalline and high-density dislocation structure is formed, nanoscale grain boundaries and high-density dislocation defects provide a rapid channel for nitrogen atom diffusion, the rough surface provides more nucleation sites, initial nucleation and growth of the CrN coating are promoted, and the surface roughness of the CrN coating is improved. And the method has the advantages of energy conservation, high efficiency and the like.
Owner:NANCHANG HANGKONG UNIVERSITY

Laser shock processing method for gradient heterostructure of TiVAl memory alloy

The present invention discloses a laser shock treatment method for a gradient heterogeneous structure of a TiVAl memory alloy, comprising the following steps: S1, using sponge titanium, dendrite vanadium and high-purity Al particles as raw materials, and preparing a TiVAl light memory alloy with a total mass of 80g according to a chemical composition of Ti-13V-3Al atomic ratio; S2, placing the prepared raw materials in a vacuum arc melting furnace crucible according to the principle that low-melting-point pure Al particles are placed at the bottom of the crucible and high-melting-point dendrite vanadium is placed at the top of the crucible; S3, repeatedly melting the raw materials 4 times under the action of an electric arc to prepare a TiVAl alloy ingot with uniform composition. The present invention constructs a gradient structure in a Ti-V-Al light memory alloy through a unique processing method, which effectively broadens its martensitic phase transition temperature / stress window, thereby promoting its application field.
Owner:YANTAI UNIV

A magnetic shock therapy device

The present invention discloses a magnetic shock therapy device, including a host, and N magnetic pulse coil modules electrically connected to the host, wherein the host includes a magnetic field control module, a power supply module and a temperature control module; wherein the magnetic field control module is connected to each magnetic pulse coil module, and is used to drive the magnetic pulse coil module to generate a corresponding alternating pulse magnetic field according to a set magnetic field mode; the temperature control module is used to control the temperature value of the host and the N magnetic pulse coil modules within a set temperature range; each magnetic pulse coil module includes at least one coil connector and a plurality of coils movably connected to the coil connector. The magnetic shock therapy device is provided with a coil connector and a plurality of coils in the magnetic pulse coil module, so that one host drives a plurality of coils to work continuously, thereby improving the practicability of the device, and at the same time, the power supply module and the temperature control module are used to achieve efficient power supply and stable temperature control, thereby ensuring the safe and stable operation of the device.
Owner:HUNAN HUAYI ELECTROMAGNETIC MEDICINE RES INST CO LTD

A bifunctional catalyst, its preparation method and application

This invention discloses a bifunctional catalyst, its preparation method, and its application, comprising the following steps: first, ZIF-8 is subjected to pyrolysis treatment; then, it is impregnated with a loaded iron source followed by carbothermal shock treatment; finally, it is impregnated with a loaded soluble metal salt followed by carbothermal shock treatment. This invention combines the advantages of high-entropy alloys and single-atom catalysts, utilizing thermal shock pyrolysis to obtain a bifunctional catalyst with uniform catalytic distribution, good catalytic activity, high stability, a simple preparation method, good catalyst performance, and ease of widespread application.
Owner:HUAZHONG UNIV OF SCI & TECH RES INST SHENZHEN

Electric shock treatment device and use method thereof

The invention discloses an electric shock treatment device and a use method thereof, and the device comprises management software which is used for receiving and storing treatment process data and carrying out the evaluation of a treatment effect; the host controller is used for receiving the treatment scheme given by the management software, acquiring a biological point signal and sending the biological point signal to the management software for analysis and processing; the authentication module is used for acquiring and verifying identities of a therapist and a patient; a brain electrode; a trunk electrode; according to the invention, safety confirmation is carried out based on the patient medical record information and the identity tag, and safety operation hidden dangers are eliminated; on the basis of medical records and treatment history of a patient, treatment parameters are automatically generated, a therapist is assisted in quickly setting the treatment parameters, the problem that operation is tedious in the electroshock treatment process is solved, and meanwhile, the treatment efficiency is improved based on real-time monitoring data and historical treatment data of electroencephalogram, electrocardio and myoelectricity. And electroencephalogram / electrocardio / myoelectricity characteristic changes before and after treatment, epileptic seizure induction characteristic parameters and the like are automatically analyzed, so that a therapist can evaluate the clinical effect of a treatment scheme in time.
Owner:ANHUI ZHONGKESEN AIZHI TECHNOLOGY DEVELOPMENT CO LTD

Nickel-based alloy and method for improving radiation resistance of nickel-based alloy and nickel-based alloy thin-wall pipe

ActiveCN121718816ALight spotAlloy
The invention discloses a nickel-based alloy and a method for improving the radiation resistance of the nickel-based alloy and a nickel-based alloy thin-wall pipe. The method for improving the radiation resistance of the nickel-based alloy comprises the following steps: carrying out laser shock on the nickel-based alloy; wherein the laser energy of the laser shock is 50-100 mJ, the wavelength is 532 nm, the pulse width is 8-15 ns, and the light spot diameter is 0.2-0.5 mm; the dislocation ring density of the nickel-based alloy after laser shock is irradiated by 20dpa is less than 2.5 * 10 < 22 > m <-3 >. According to the alloy prepared through the method, under the irradiation damage dose of 20 dpa, the dissolution rate of a precipitated phase caused by irradiation is reduced by 40.7% compared with a nickel-based alloy not subjected to laser shock, the size of an irradiation dislocation ring is reduced by more than 5%, the density is reduced by nearly 30%, and the macrohardness change H of the alloy is reduced by 26.7% compared with the nickel-based alloy not subjected to laser shock treatment.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Control circuit of electric shock treatment equipment

The invention provides a control circuit of electric shock treatment equipment, which comprises a touch screen internally provided with a control mainboard; the communication board is electrically connected with a control main board in the touch screen; the acquisition circuit board is electrically connected with the communication board, and the acquisition circuit board is electrically connected with a detection electrode; an METC control circuit board, wherein the METC control circuit board is electrically connected with the communication board; the METC power supply rectifying plate is electrically connected with the METC control circuit board; the constant current control circuit is electrically connected with the METC power supply rectifying plate, and the constant current control circuit is electrically connected with an output electrode; according to the invention, forward waves and reverse waves of the stimulation current can be controlled to carry out stimulation treatment, a constant-current rectangular waveform with bidirectional adjustable frequency and amplitude is realized, the magnitude of the stimulation current can be controlled, and the safety is better guaranteed.
Owner:WUHAN YIRUIDE MEDICAL EQUIP

A method for producing multi-child potato

The application provides a method for producing multi-tuber small potatoes and belongs to the technical field of potato cultivation. The method for producing multi-tuber small potatoes comprises the following steps: harvesting seed potatoes, waiting for the main bud of the seed potato to grow to 2-5 cm, damaging the main bud, repeating 2-4 times, and sowing the seed potatoes at the sowing period; and the damage mode of the main bud is selected from one of 75% alcohol spraying treatment or shock treatment. Through the main bud treatment of the potato seed potato, the size and the number of the potato tubers can be effectively controlled, and the quality and the yield of the small potato tubers are improved.
Owner:NINGBO ACAD OF AGRI SCI

Method for preparing freezing shock-treated monocytes or macrophages loaded with attenuated salmonella and use thereof

Provided are a method for preparing freezing shock-treated monocytes or macrophages loaded with attenuated Salmonella and the use thereof. The method comprises: loading engineering-modified attenuated Salmonella in monocytes or macrophages, and performed a freezing shock treatment on the monocytes or macrophages loaded with the strain by means of liquid nitrogen. The method for preparing the freezing shock-treated immune cells loaded with the strain is simple and easy to operate. The source problem of the monocytes or macrophages loaded with the engineering-modified attenuated Salmonella is solved, and the method has good application prospects. According to the strategy, by means of avoiding exposure and heterologous stimulation of bacteria, the biological safety of bacteria-based anti-tumor treatment is improved; and the anti-tumor immune response is promoted by means of the high titer of an intratumoral strain, so that a stronger anti-tumor efficacy is obtained.
Owner:JIANGSU TARGET BIOMEDICINE RES INST

Cooling system for magnetic seizure therapy device

PCT designated stage expiredWO2025123392A1CoilsMedicineMagnetic seizure therapy
The present invention provides a cooling system for a magnetic seizure therapy device, comprising a computer, a control panel, a compressor, a heat exchanger, a heat dissipation device, a water tank, a cooling pump and a magnetic stimulation coil. The computer is communicationally connected to the control panel; the compressor is connected between the heat exchanger and the heat dissipation device, and is electrically connected to the control panel; the water tank is connected to the heat exchanger; the cooling pump is connected to the water tank; one end of the magnetic stimulation coil is connected to the cooling pump, and the other end of the magnetic stimulation coil is connected to the heat exchanger. Liquid flowing back into the water tank is kept at a low temperature, so that the magnetic seizure therapy device can be continuously and normally used, without accelerating the aging of the magnetic stimulation coil.
Owner:WUHAN YIRUIDE MEDICAL EQUIPMENT NEW TECHNOLOGY CO LTD

A laser irradiation anti-induction coating crack device and method

This invention relates to the field of laser surface engineering technology, specifically to a laser irradiation-induced coating cracking device and method. The device includes a laser generation and output unit, a beam transmission and dynamic focusing unit, an online monitoring and feedback unit, and a central control unit. In this invention, by collecting crack morphology data and thermophysical parameters of the coating surface, a repair mode or a prevention mode is intelligently switched. In repair mode, the beam is controlled to perform low-power defocus scanning along both sides of the crack to construct a preheating relaxation zone, followed by high-power focusing scanning along the crack center to induce dense remelting. In prevention mode, a grid-like laser shock treatment is performed to construct a compressive stress layer. By utilizing infrared and visual dual feedback to correct the laser output energy in real time, active control of coating stress and non-destructive healing of defects are achieved, solving the problem of coating peeling and thermal damage easily caused by traditional thermal repair, and improving the structural integrity and service life of precision coated components.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY

Method for optimizing electrical performance of ZnO resistor disc based on square wave impact treatment

The invention discloses a method for optimizing the electrical performance of a ZnO resistor disc based on square wave impact treatment. The method comprises the following steps: testing the electrical performance of the ZnO resistor disc to be optimized; calculating the single impact energy of the ZnO resistor disc and the charging voltage of the impact generator according to the volume energy density and the volume of the ZnO resistor disc; performing energy impact performance optimization of a preset impact group number on the ZnO resistor disc according to the charging voltage of the impact generator, and testing a forward volt-ampere curve and a reverse volt-ampere curve of the ZnO resistor disc; according to the forward volt-ampere curve and the reverse volt-ampere curve, respectively calculating forward electrical performance and reverse electrical performance of the ZnO resistor disc under energy impact; if the positive-sequence electrical performance, the reverse-direction electrical performance and the electrical performance meet preset conditions, optimization of the ZnO resistor disc is ended, otherwise, the preset impact group number is reduced, energy impact optimization processing is conducted again till the preset conditions are met, and the optimized ZnO resistor disc is obtained.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +2

Seed production method of channa maculata

The invention belongs to the technical field of fish germplasm resource improvement, and discloses a breeding method of channa maculata, which comprises the following steps: selecting mature channa maculata parent female fish and male fish, carrying out spawning induction treatment, and then stimulating by running water to collect ova and seminal fluid; diluting the semen, carrying out shake culture, and irradiating by adopting an ultraviolet lamp during the shake culture to obtain inactivated semen; adding the inactivated seminal fluid into the ovum, stirring to activate fertilization, and adding aerated water to obtain a fertilized ovum; carrying out cold shock treatment and hatching to obtain newly hatched larva fish; after the newly hatched fries open mouths, fish fries are obtained and fed with biological bait for breeding, when the fish fries grow to 2 cm, the bodies start to become yellow gradually, and when the fish fries grow to 5 cm, the whole bodies show obvious and stable golden body lines, and the channa maculata is obtained. According to the method, artificial insemination is carried out in the mode that the semen is irradiated by the ultraviolet lamp to be inactivated, the channa maculata is obtained through natural incubation, the method is simple, convenient and rapid, guarantees are provided for production and breeding of the channa maculata, and the method has good application prospects.
Owner:GUANGDONG OCEAN UNIVERSITY