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98 results about "Longhorn beetle" patented technology

The longhorn beetles (Cerambycidae; also known as long-horned or longicorns) are a cosmopolitan family of beetles, typically characterized by extremely long antennae, which are often as long as or longer than the beetle's body. In various members of the family, however, the antennae are quite short (e.g., Neandra brunnea) and such species can be difficult to distinguish from related beetle families such as the Chrysomelidae. The family is large, with over 26,000 species described, slightly more than half from the Eastern Hemisphere. Several are serious pests. The larvae, called roundheaded borers, bore into wood, where they can cause extensive damage to either living trees or untreated lumber (or, occasionally, to wood in buildings; the old-house borer, Hylotrupes bajulus, is a particular problem indoors). A number of species mimic ants, bees, and wasps, though a majority of species are cryptically colored. The rare titan beetle (Titanus giganteus) from northeastern South America is often considered the largest insect (though not the heaviest, and not the longest including legs), with a maximum known body length of just over 16.7 cm (6.6 in). The scientific name of this beetle family goes back to a figure from Greek mythology: after an argument with nymphs, the shepherd Cerambus was transformed into a large beetle with horns.

Unmanned aerial vehicle network resource allocation method based on an improved longicorn stigma search algorithm

The invention discloses an unmanned aerial vehicle (UAV) network resource allocation method based on an improved longicorn beetle antennae search algorithm, a terminal of an unmanned aerial vehicle communication system is composed of a UAV pair (UAV), the method comprises the following steps: (1) initializing system parameters including a signal to interference plus noise ratio threshold value, power of a UAV transmitting terminal and other parameters; (2) representing a scheme of sharing channel resources by a user by using a position vector, and randomly generating an initial solution conforming to a constraint condition as a current position; (3) respectively corresponding positions of the left and right whiskers of the longhorn beetle at the current position are obtained; (4) solving the throughput of the current position of the system and the corresponding positions of the left and right sides in the UAV communication system, and updating the longhorn beetle position by taking a system throughput performance optimization index as an objective function; And (5) repeating the above steps until iteration is stopped, and carrying out reverse decoding on the coding space to obtainan optimal resource allocation scheme. The system throughput can be effectively improved, and the method is excellent in performance and easy to implement.
Owner:HOHAI UNIV

Pesticide film forming agent used for controlling diseases and insect pests of forest trees, and its preparation method

InactiveCN103960228ASolve difficultySolve technical problems such as easy loss of drug effectBiocideFungicidesDiseaseAcute toxicity testing
The invention provides a pesticide film forming agent used for controlling diseases and insect pests of forest trees, and its preparation method. The pesticide film forming agent comprises 0.5-10% of an active component, 0.5-10% of a film forming aid, 5-15% of a solvent, 5-15% of an aid and 50-80% of water; and the active component is one of or a mixture comprising several of tebuconazole, difenoconazole, propiconazole and emamectin benzoate. The drug film forming agent has a good control effect on the diseases and insect pests of the forest trees, has a low price, is convenient to use, and has a good control effect on the dry rot diseases of hickory trees, the canker of various trees, stalk longhorn beetles and bark beetles, leaf aphids, red spider mites and the like especially; the drug film forming agent reduces the active component volatilization and loss possibility and changes the release performance, so the residual period is prolonged, the drug dose and the dosing frequency are reduced; and the drug film forming agent reduces the toxicity of highly toxic pesticides, reduces the acute toxicity of pesticides, reduces the drift of the pesticides, and mitigates the pollution to the environment and the hazard to crops.
Owner:ZHEJIANG FORESTRY UNIVERSITY

Method for comprehensively preventing and treating longhorn beetles

The invention relates to the technical field of insect pest prevention and treatment in forestry, in particular to a method for comprehensively preventing and treating longhorn beetles. In the method,first, healthy masson pine wood is selected, pine wood nematodes are introduced and utilized for infecting the masson pine, then the infected masson pine and beauveria bassiana are blended and subjected to anaerobic digestion, yeast is obtained, monoterpene pheromones of the pine wood nematodes are carried in the masson pine yeast after infection of the pine wood nematodes, the pine wood nematodes are hosts of the longhorn beetles, the pheromones of the hosts will lure and gather the longhorn beetles, the lured and gathered longhorn beetles will make contact with beauveria bassiana, in this way, the longhorn beetles and larvae of the longhorn beetles can be effectively killed, the longhorn beetles will also carry the deadly beauveria bassiana to other places to promote diffusion of the longhorn beetle deadly bacteria, and then the killing rate is further increased for the longhorn beetles. Sclerodermus harmandi as parasitical natural enemies of the longhorn beetles is released aroundluring wood filled with self-made luring and killing agents and is parasitic on the larvae of the longhorn beetles to further increase the killing rate for the longhorn beetles, finally, the luring wood is burned down in a concentrated mode, the longhorn beetles are thoroughly killed, and broad application prospects are achieved.
Owner:陈合华

Power distribution network dynamic reactive power optimization method based on variable step size beetle antennae search algorithm

The invention discloses a power distribution network dynamic reactive power optimization method based on a variable step size beetle antennae search algorithm. The method comprises the steps: buildinga dynamic reactive power optimization mathematic model of a power distribution network through employing the minimum network loss and the minimum capacitor switching cost as target functions; acquiring node data of the power distribution network system; initializing the position x0 of a longhorn beetle within a constraint range, and setting a variable step size parameter eta, the maximum number of iterations N and the action cost of a compensation device; randomizing the directions of the left and right beards of the longhorn beetle to establish the positions xl and xr of the left and right beards of the longhorn beetle; adjusting a control variable, and correcting a boundary-crossing state variable; calculating the odor intensity of the longhorn beetle beards; carrying out variable stepsize adjustment; and if the beetle antennae search algorithm reaches the maximum number N of iterations, stopping iteration, and outputting the final optimal reactive power compensation amount xopt and the optimal value fopt. The optimization precision of an original beetle antennae search algorithm is effectively improved, and compared with a traditional intelligent algorithm, the variable step size beetle antennae search algorithm is small in calculated amount and simple in process, and is suitable for real-time adjustment in the operation process of a power distribution network.
Owner:LIAONING ELECTRIC POWER DEV

Chaotic longicorn swarm search algorithm introducing mutation strategy

The invention discloses a chaotic longicorn swarm search algorithm introducing mutation strategy, which comprises the steps of expanding longicorn individuals in a longicorn beard search algorithm into a longicorn swarm by applying a particle swarm strategy, and expanding a search range of the algorithm; a chaotic mapping mechanism is introduced to carry out chaotic disturbance on the longhorn beetles, so that the initialized population is uniformly distributed in a random mode, and the convergence rate of the algorithm is increased; and a mutation factor strategy is provided for position updating, so that the algorithm can jump out of local optimum more easily, and the stability and precision of the algorithm are enhanced. According to the method, the defects of low precision, low convergence speed, poor stability, easiness in falling into local optimum and the like of a traditional BAS (Beef Average Search) algorithm in solving a high-dimensional problem are improved; meanwhile, theadvantages of few BAS parameters, easiness in implementation and the like are reserved, the convergence speed is greatly increased, the stability and the global search capability of the algorithm areenhanced, and the problem of falling into a local optimal solution is avoided to the maximum extent.
Owner:LIAONING TECHNICAL UNIVERSITY

High-efficiency longhorn beetle control paste with strong intake transportation characteristic and contact toxicity, and application method of paste

The invention discloses high-efficiency longhorn beetle control paste with strong intake transportation characteristic and contact toxicity, and belongs to the field of pesticides and preparations thereof. The paste is prepared by blending the following components in percent by weight: 0.1-30% of thiacloprid, 0.1-20% of 2-phenyl-1-(5-(2-phenylethynyl)thiophene-2-yl) ethyl ketone (hereinafter referred to as PPTE) and the balance of additives. The additives comprise a solvent, an adhesive and filler, wherein the weight of the solvent, the adhesive and the filler respectively accounts for 0.1-80.0%, 0.1-80.0% and 0.1-80.0% of the total weight of the paste. The invention further discloses an application method of the paste; and when the paste disclosed by the invention is applied to the part where bark is peeled off, good adhesion and persistence are realized; pesticide application is simple and convenient; insecticide utilization rate is improved; environmental pollution is reduced; an insecticide can enter into plants through internal absorption of plant epidermis; and the paste disclosed by the invention has a certain contact toxicity so as to prevent pests from crawling up and downon a tree trunk, thus greatly reducing harm to trees.
Owner:NANJING YINGZHIKANG AGRI SCI & TECH +1

Unmanned sailboat path tracking guidance method based on beetle antennae search optimization

The invention relates to an unmanned sailboat path tracking guidance method based on beetle antennae search optimization. The unmanned sailboat path tracking guidance method comprises the following steps that 1, data parameters in the sailing process of a sailboat are collected; 2, constructing a sailboat path tracking guidance cost function about obstacle collision avoidance, path tracking, speed loss and voyage loss; and step 3, a cost function of sailboat path tracking guidance is solved based on longhorn beetle search optimization. According to the method, a beetle antennae search method is combined with constrained optimization, a guidance problem is converted into a beetle antennae optimization problem, a beetle antennae search algorithm is improved to improve the performance of the algorithm, convergence of an actual course angle to a reference course angle is ensured, and the accuracy of the algorithm is improved. The invention provides an unmanned sailboat guidance method which is described in a complete expression manner and is easy to realize by programming. The method is suitable for path tracking and collision avoidance mixed guidance of the unmanned sailboat, can cope with a more complex marine environment, and greatly improves the sailing safety of the unmanned sailboat.
Owner:YANSHAN UNIV

Biological prevention and control method of longhorn beetles

The invention discloses a biological prevention and control method of longhorn beetles. The method comprises the following steps: dissolving a medicament containing pathogenic microorganisms for preventing and controlling longhorn beetles into water to prepare a water dispersing agent, and then contaminating the longhorn beetles with the water dispersing agent, wherein the medicament containing the pathogenic microorganisms for preventing and controlling the longhorn beetles comprises beauveria bassiana and sodium chloride, and the ratio of the number of the beauveria bassiana spores to the grams of the sodium chloride is: (1-8)*200 billion:(2.9-7.5 g). According to a test provided by the invention, a remarkable synergistic effect is obtained by compounding the beauveria bassiana and the sodium chloride, the prevention and control effect is very good, and the prevention and control effect of the serious Dancong tea longhorn beetles at present is obvious. In addition, the compounded medicament has the characteristics of friendliness to environment, and no pollution to soil or underground water resources, has a simple using method, and is easy to promote and apply, so that the insecticidal effect of the pathogenic microorganisms is improved, and the tea leaves are free of pollution.
Owner:INST OF ZOOLOGY GUANGDONG ACAD OF SCI

Method for generating simplified test case set of flight control airborne model

The invention discloses a method for generating a simplified test case set of a flight control airborne model, and belongs to the technical field of aviation airborne model testing. The method comprises the following steps of: firstly loading the flight control airborne model, acquiring information of each input parameter, and acquiring an initial data set of each input parameter after valuing the parameters; and then generating uncovered combination pairs combined pairwise, acquiring the initialization position of each longhorn beetle, sequentially acquiring candidate test cases corresponding to each input parameter by adopting a longhorn beetle algorithm according to the acquiring sequence of the input parameters, generating N candidate test cases, selecting the candidate test case with the maximum effective coverage combination number in the test case set, adding the candidate test case into the test case set, deleting the combinations covered by the test cases in the uncovered combination pairs until the combinations are zero, and finally acquiring the simplified test case set. According to the method, a fitness function suitable for generation of the test cases in pairwise combination is constructed, the candidate test cases are generated in a mode of the longhorn beetle swarm, and then the optimal test case is selected, so that the diversity and the simplification of the test cases are improved.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Centralized battery energy storage power station frequency modulation control strategy based on dynamic grouping technology

The invention discloses a centralized battery energy storage power station frequency modulation control strategy based on a dynamic grouping technology. The method comprises the following steps: constructing an evaluation index system of a dynamic grouping technology, and designing a fitness function of an adaptive longhorn beetle algorithm; constructing a self-adaptive step length formula of the self-adaptive beetle antennae optimization algorithm; applying a self-adaptive longhorn beetle algorithm, and optimizing a forced updating threshold value of a dynamic grouping technology; determining an automatic update period of the dynamic grouping technology; grouping battery units, determining frequency modulation power instructions of three battery packs in an energy storage power station by applying a dynamic grouping technology, further determining a frequency modulation instruction of each battery unit, and enabling the battery units to respond. The self-adaptive beetle antennae optimization algorithm is used for searching and forcibly updating the threshold value, the charge state range of the battery unit after the response is finished is reduced, and the schedulable potential of the energy storage power station in the next scheduling period is improved; the action frequency of the energy storage system is reduced, and the operation economy of the energy storage system is improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Infected pine disinfection bag for preventing and treating pine wilt disease as well as pine wilt disease prevention and treatment method

The invention discloses an infected pine disinfection bag for preventing and treating pine wilt disease as well as a pine wilt disease prevention and treatment method. The infected pine disinfection bag for preventing and treating the pine wilt disease comprises a polypropylene bag with a bag opening; and the bag opening of the polypropylene bag is sealed by a sealing rope. The wilt disease prevention and treatment method comprises the following steps: covering a pine infected with the pine wilt disease with the infected pine disinfection bag for preventing and treating the pine wilt disease;adding a disinfectant; and then, sealing the bag. When the pine infected with the pine wilt disease is treated by using the disinfection bag and the method, the infected pine is sealed in the polypropylene bag, the disinfectant is added into the bag, and the bag is tightened through the sealing rope so that sealed environment is formed; and thus, longhorn beetles in the infected pine are sealed inthe polypropylene bag along with the infected pine, and are quickly killed under the effect of the disinfectant in cooperation with the anoxic environment due to asphyxia, thereby cutting off transmission route of the pine wilt disease so as to have transmission of the pine wilt disease controlled with threat to uninfected pines reduced. Moreover, the disinfection bag and the method are capable of effectively shortening prevention and treatment cycles so as to make greater contributions to the creation of green ecological environment.
Owner:深圳市名高科技有限公司 +1
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