106results about How to "Avoid clusters" patented technology

The invention belongs to the field of application of a nano material, particularly relates to a preparation method of a silver nanowire-zinc oxide composite transparent electrode and aims to simplify process, reduce cost and obtain the silver nanowire-zinc oxide composite transparent electrode with excellent light transmission and electrical conductivity, high wear resistance and environmental stability. The invention adopts the following technical scheme: 1, an ultra long silver nanowire is prepared by an improved polyol reduction method; 2, the silver nanowire is processed by a post-processing process; 3, a silver nanowire transparent conductive film is prepared; 4, zinc oxide nano particles are filled. The preparation method has various advantages of simple process, high repeatability, easiness for operation and control and the like.

An object recognition system is described that incorporates swarming classifiers with attention mechanisms. The object recognition system includes a cognitive map having a one-to-one relationship with an input image domain. The cognitive map records information that software agents utilize to focus a cooperative swarm's attention on regions likely to contain objects of interest. Multiple agents operate as a cooperative swarm to classify an object in the domain. Each agent is a classifier and is assigned a velocity vector to explore a solution space for object solutions. Each agent records its coordinates in multi-dimensional space that are an observed best solution that the agent has identified, and a global best solution that is used to store the best location among all agents. Each velocity vector thereafter changes to allow the swarm to concentrate on the vicinity of the object and classify the object when a classification level exceeds a preset threshold.

The invention relates to a sweet potato rotary tillage ridging transplanting combined operation machine suitable for transplanting an exposed sweet potato seedling, and belongs to the technical field of agricultural planting machinery. The combined operation machine comprises a transplanting unit and a rotary tillage ridging unit which are connected by a connection frame; the outside of traction plates, forwards extending, at two sides of the middle of a horizontal main rod of the connection frame is fixedly connected with a rotary tillage unit; a pair of traction plates downwards extend to a stubble pressing disc; a ground wheel assembly at the front side of the transplanting unit is provided with a transmission shaft in transmission connection with a power input end of the transplanting unit; a working chain wheel is arranged at one side of the ground wheel; the working chain wheel is in transmission connection with a driven chain wheel on the transmission shaft by a chain; a ridge repairing assembly is arranged at the rear side of the transplanting unit; a pair of splayed soil collecting discs are hinged to a support member of the ridge repairing assembly; each disc supports a roller. Stubble pressing and stubble damaging operations can be reliably finished by the sweet potato rotary tillage ridging transplanting combined machine, the ground wheel assembly works from a furrow without damaging the ridge form, and the ridge repairing assembly can automatically finish the soil ridging, ridge smoothening and ridge repairing works after the transplantation.

A sensor device for sensing magnetic particles, the sensor device including a substrate and a sensing unit provided on and / or in and / or near the substrate. The sensing unit is configured to sense a detection signal indicative of the presence of the magnetic particles. The sensor device further includes a magnetic field control unit which may be provided off the substrate and is configured to generate a time-dependent magnetic field for interaction with the magnetic particles.

The invention provides a lithium ion battery negative electrode material FeS / Fe / C and a preparation method thereof. The preparation method comprises the steps of dissolving an iron source and a sulfursource in distilled water according to a mole ratio of Fe and S being 1:1 to obtain an iron source aqueous solution and a sulfur source aqueous solution; and dropwise adding a papermaking red liquidinto the iron source aqueous solution, dropwise adding the sulfur source aqueous solution, finally adding an additive, performing uniform mixing, and performing hydrothermal treatment, washing, drying, grinding and calcination under protection of an inert gas to obtain the lithium ion battery negative electrode material FeS / Fe / C. The negative electrode prepared by the method has favorable electrochemical performance and has high specific capacity and favorable cycle stability. The method is simple, the industrial waste papermaking red liquid is used as one of main raw materials, and the cost is reduced as well as the waste is recycled.

The embodiment of the invention discloses a sample clustering method and device, equipment and a storage medium, and relates to the field of data processing, and the method comprises the steps: carrying out the statistics of a first sample distance corresponding to each sample in a sample set, and enabling the first sample distance to be the distance between the sample and an Sth neighbor sample of the sample; in all the first sample distances, acquiring a first sample distance in a set distance range; calculating a distance mean value based on the first sample distance in the set distance range; determining all connection samples of each sample based on the K neighbor sample set corresponding to each sample, wherein K > S, and the connection samples of the samples are neighbor samples and have a connection relationship; and clustering samples in the sample set according to the connection samples, the distance mean value and the S value, the distance mean value being a scanning radius, and the S value being a minimum inclusion sample number of clustering. By adopting the method, the technical problem that a DBSCAN algorithm in the prior art cannot reasonably cluster a sample set with uneven density can be solved.

The invention discloses a micro light-emitting diode display panel and a preparation method thereof, the micro light-emitting diode display panel comprises: a driving back plate, wherein one surface of the driving back plate is provided with a plurality of grooves, the bottom of each groove is provided with a first magnetic electrode, and the sectional dimensions of the grooves are gradually increased from bottom to top; and a micro light-emitting diode which is embedded into the groove of the driving back plate, wherein a second magnetic electrode is arranged at one end of the micro light-emitting diode, the second magnetic electrode and the first magnetic electrode are in contact with each other, and the maximum section size of the micro light-emitting diode is not smaller than that of the groove. In this way, the transfer efficiency of the micro light-emitting diode can be improved, and large-scale transfer is achieved.

The invention discloses an ink-jet printing device which is used for printing an organic light-emitting device. The ink-jet printing device comprises an ink jet unit, an ink supply unit, a liquid supply unit, a negative pressure unit and a control unit. The ink supply unit is in fluid connection with the ink jet unit and is used for providing stored ink for the ink jet unit; the liquid supply unit is in fluid connection with the ink jet unit and is used for providing a solvent for the ink jet unit; the negative pressure unit is in fluid connection with the ink jet unit and is used for providing negative pressure for the ink jet unit; the ink jet unit is used for accommodating ink formed by mixing the stored ink and the solvent and is used for controlling the printing ink to conduct printing; and the control unit is used for controlling the supply of the stored ink and the solvent according to a detection value of the ink jet unit.

Disclosed is an improved semiconductor structure (e.g., a silicon germanium (SiGe) hetero-junction bipolar transistor) having a narrow essentially interstitial-free SIC pedestal with minimal overlap of the extrinsic base. Also, disclosed is a method of forming the transistor which uses laser annealing, as opposed to rapid thermal annealing, of the SIC pedestal to produce both a narrow SIC pedestal and an essentially interstitial-free collector. Thus, the resulting SiGe HBT transistor can be produced with narrower base and collector space-charge regions than can be achieved with conventional technology.

The invention discloses a SiO2-precious metal nano composite material of a core-shell structure and a preparation method thereof. The preparation method comprises the following steps: S1, preparing amino silicon dioxide nano particles; S2, generation of noble metal nanoparticles on the surfaces of the amino silicon dioxide nanoparticles: S21, adding the amino silicon dioxide nanoparticles preparedin S1 into ultrapure water, and performing ultrasonic treatment at room temperature for 2-4 minutes to uniformly disperse the nanoparticles; S22, under an ice bath condition, adding a noble metal acid aqueous solution into the dispersion liquid in the step S21, and stirring for 2-4 minutes; S23, adding sodium citrate into the solution stirred in the step S22, stirring for 2-4 minutes, then addinga NaBH4 solution, and continuously stirring for 4-8 minutes; and S24, carrying out centrifugal treatment on the solution obtained after the reaction in the step S23, and then respectively dissolvingethanol and washing with water twice to obtain the SiO2 and precious metal composite nanoparticles. The composite nanoparticle has very strong absorption strength in an ultraviolet visible region, isan excellent nano-functional composite material, can be used for constructing a detection platform based on electrochemiluminescence or fluorescence resonance energy transfer, and is used for quantitative detection of a target object and the like.

The invention discloses a matte acrylic acid adhesive. The matte acrylic acid adhesive comprises, by weight, 70-80 parts of methyl methacrylate, 25-38 parts of ethyl acrylate, 15-18 parts of dimethyldiethoxylsilane, 35-45 parts of a solvent, 2-3 parts of nano-SiO2 powder, 1.2-1.8 parts of nano-Al2O3 powder, 0.2-0.5 parts of micron-sized SiO2 powder, 0.2-0.5 parts of micron-sized Al2O3 powder, 0.6-1 part of isocyanate, 4-6 parts of rosin resin, 3-6 parts of terpene resin, 1-1.5 parts of an azo-compound, 4-6 parts of a N-nitroso compound and 0.5-2 parts of a coupling agent. The coupling agent has a chemical formula of CH2=CH-Si(OC2H5)3. The matte acrylic acid adhesive improves acrylic acid adhesive roughness under the condition of no increasing of particle diameter, prevents cluster and settlement of SiO2 and Al2O3 powder in a system and improves adhesion with a base.