21results about How to "Long-term stability" patented technology

The invention belongs to the field of power station discharge monitoring, and particularly relates to a multi-compartment GIS equipment discharge source positioning straddle collaborative layout structure, which comprises a core sensor group arranged in each main compartment of GIS equipment and used for collecting UHF pulse signals of a main compartment discharge source and taking the UHF pulse signals as main positioning data; the edge sensor group is arranged at the flange interface between the compartments and is used for collecting UHF pulse signals transmitted across the compartments and taking the UHF pulse signals as auxiliary positioning data; and the signal fusion module is used for establishing a compartment-sensor incidence matrix, and fusing the time delay data of the core sensor group and the edge sensor group through a weighted fusion algorithm. According to the multi-compartment GIS equipment discharge source positioning straddle collaborative layout structure provided by the invention, four functional modules of signal fusion, attenuation calibration, time delay compensation and dynamic calibration are combined, and the core problems of straddle coverage, insufficient precision and too high cost of multi-compartment GIS equipment discharge source positioning are effectively solved.

The invention provides an in-vitro induction and purification method for Giardia lamblia cysts. The induction method is characterized in that Giardia lamblia trophozoite is cultured in a TYI-S-33 culture medium containing pulvis fellis suis to obtain the Giardia lamblia cysts. According to the in-vitro induction method for the Giardia lancea cysts, the pig gall powder is added into the TYI-S-33 culture medium to induce the Giardia lancea trophozoite, and it is found that compared with common ox gall powder, the proportion of converting the Giardia lancea trophozoite into the cysts can be remarkably increased, and the generation rate of the induced cysts stably reaches 50%; according to the giardia lamblia cyst purification method disclosed by the invention, protease K is utilized for purification, so that pure cysts can be obtained, long-term stability and activity can be maintained, and the cysts can be stably stored for several weeks to several months at 2-8 DEG C and can be prepared into giardia lamblia cyst standard substances; the method is used for method verification, quality control, disinfection efficiency research, filtration efficiency evaluation and the like.

The invention discloses an identity recognition information generation method and device of Bluetooth equipment and electronic equipment, and relates to the technical field of electromagnetic supervision safety, and the method comprises the steps: determining a broadcast event interval and an interval type according to a timestamp sequence of a broadcast packet; determining a broadcast event interval parameter, a broadcast delay generation parameter and a time drift value according to the broadcast event interval and the jump discontinuity point in the interval category; and obtaining the identity recognition information of the Bluetooth equipment by combining the parameters. The problems that identity recognition information generated according to load information is prone to failure or counterfeiting and poor in safety, and identity recognition information generated according to the characteristics of data packet signals is low in accuracy and poor in stability can be solved. According to the method, broadcast event interval parameters are extracted from an application layer, broadcast delay generation parameters are extracted from a protocol layer, time drift values are extracted from a hardware layer, cross-layer fingerprints are jointly formed to serve as identity recognition information, the identity recognition information has long-term stability, and accurate, stable and repeatable recognition can be conducted on Bluetooth equipment.

The application discloses a kind of children language cognitive rehabilitation auxiliary system and method based on adaptive co-creation mechanism, belong to medical artificial intelligence and psychological rehabilitation engineering field.The system includes five big core modules, and is connected in the form of data stream closed loop between modules, forms sustainable optimization interactive system, which is by fusing the semantic vector of children voice, emotion vector and task vector, via dynamic weight generation network and cross-modal attention mechanism to construct fusion state vector, and using attention enhanced gated recurrent unit and strategy network to generate co-creation control instruction, and then synthesis interactive voice signal with emotional expressiveness.The application can realize the synchronous fusion and linkage feedback of semantic understanding and emotion recognition, dynamically adjust interactive strategy according to the real-time state of children, and optimize strategy network parameters through online self-learning, improve the naturalness, coherence and individual adaptability of rehabilitation interaction.

The application provides an oral instant tablet containing Morinda citrifolia oil, which comprises the following components in parts by mass: Morinda citrifolia oil microemulsion 10 parts, carrier 30-40 parts, coating material 2-4 parts, and disintegrating agent 2-5 parts. The coating material is selected from Aeroperl and / or Sylysia; the carrier is selected from one or more of microcrystalline cellulose MCC PH101, microcrystalline cellulose MCC PH102, starch and lactose; and the disintegrating agent is selected from carboxymethyl starch sodium and / or low-substituted hydroxypropyl cellulose. The microemulsification technology is used to wrap the essential oil to reduce the volatilization of the essential oil; the microemulsion is made into a tablet to cover the acidity, increase the compliance of the public, and realize the form change of the Morinda citrifolia oil microemulsion from liquid to solid. The application studies and prepares the oral instant tablet containing Morinda citrifolia oil, which not only solves the inherent defects of traditional dosage forms, but also provides a more convenient taking mode compared with common tablets.

This invention relates to the field of optical measurement equipment technology, specifically disclosing a mirror fixing device for optical measurement, comprising: a base, wherein a support rod is slidably connected to the base, and a fixing frame is fixedly connected to the support rod; a rotating shaft, rotatably connected to the fixing frame, a connecting frame being fixedly connected to the rotating shaft, and two support shafts being rotatably connected to the connecting frame, with a fixing shell fixedly connected between the two support shafts; two fixing columns, each fixedly connected to both sides of the fixing frame, each fixing column being slidably connected to a sliding rod, and a guide ring being fixedly connected between the two sliding rods; and a connecting shell, fixedly connected to one side of the fixing shell, with a ball-end rod slidably connected to the connecting shell. This invention eliminates the need for easily fatigued springs, employing a fully mechanical threaded sleeve and worm gear transmission mechanism to achieve angle and direction adjustment. This mechanical structure eliminates the problem of elasticity attenuation and has strong resistance to vibration interference.

The utility model belongs to the technical field of industrial dust removal equipment, and particularly relates to a cyclone cloth bag combined dust remover which is characterized by comprising a box body assembly, a tube nest is arranged in the box body assembly, and a stepped hole is formed in the tube nest; the filter bag assembly is arranged on the tubesheet, the filter bag assembly comprises a framework cage, and a connecting ring is arranged at the top of the framework cage; a groove is formed in the bottom surface of the connecting ring; the connecting ring is matched with the upper part of the stepped hole; the framework cage is sleeved with the filter bag, a clamping hoop is arranged at the top of the filter bag, the upper portion of the clamping hoop is arranged in the groove of the connecting ring, and the lower portion of the clamping hoop is matched with the lower portion of the stepped hole. The bag-type cyclone dust collector is used for solving the technical problems that the filter bag of the existing bag-type cyclone dust collector is only connected and mounted through a filter bag supporting plate, is lack of stability and poor in sealing performance during blowing, and is inconvenient to mount, dismount and replace.

This invention relates to the field of resource allocation and task scheduling technology, and provides a method and device for intelligent event scheduling based on scheduling strategies. The method includes: configuring capability weights for each grid member; calculating their task allocation ratio within their respective grid based on these capability weights; storing the task allocation ratio, the total number of tasks in the grid within a period, and the number of tasks already allocated to each grid member as strategy data; triggering a scheduling process in response to a new event entering the system and being associated with a specific grid, and obtaining the strategy data corresponding to that grid; calculating the real-time availability index of each grid member within the specific grid based on the obtained strategy data, and selecting the grid member with the highest real-time availability index value as the target grid member; allocating the new event to the target grid member, and updating the number of tasks already allocated to that grid member in the strategy data. This invention can improve the rationality and execution efficiency of task allocation, and effectively ensure the compliance of long-term allocation strategies and the balance of the system.

The invention relates to the technical field of BT knife handles, in particular to a modular interface structure of a universal quick-change knife handle, which comprises a knife handle, a blind rivet and a thermal shrinkage rod, the knife handle is composed of a circular truncated cone section and a circular ring section, the interior of the knife handle is of a hollow structure, a first threaded hole is formed in the left end of the circular truncated cone section, and a second threaded hole is formed in the right end of the circular ring section; the blind rivet is in threaded connection with the cutter handle through the first threaded hole, and the thermal shrinkage rod is in threaded connection with the cutter handle through the second threaded hole. The blind rivet and the thermal shrinkage rod are designed into detachable and replaceable independent modules and are in standardized threaded connection with the knife handle, and accumulated errors which are difficult to control in multi-stage assembly are structurally eliminated; the thermal shrinkage rod is used as an independent standardized function module, and the universal threaded connector at the tail end of the thermal shrinkage rod can adapt to various knife handles with different standards and specifications.

The application belongs to the field of micro-nano photonics and infrared sensing, and relates to an infrared broadband absorption metasurface structure. A structure of metal layer-dielectric layer-metal layer is adopted, the upper and lower metal layers adopt platinum, the dielectric layer uses traditional material silicon, and array arrangement is realized by combining different size sub-units, an infrared broadband absorption metasurface based on a square bevel structure is designed, and an average absorption rate of more than 60% in the 8-13um atmospheric window band is realized. The bottom metal and the dielectric layer are uniform layer structures, and the top metal layer adopts a square bevel of one angle, the ratio of the bevel to the square side length is related to the absorption wavelength. The application regulates the light field based on micro-nano structure parameter change, has good wavelength selectivity and modulation performance, the selected material has good chemical stability, and has practicability and process compatibility.

The present application provides a kind of sludge stabilizer and sludge dewatering process, the sludge stabilizer of the present application includes by mass fraction: 10 parts of magnesium carbonate, 20 parts of calcium carbonate, 10 parts of aluminum sulfate, 20 parts of potassium carbonate, 20 parts of alumina, 20 parts of calcium oxide.The present application is when carrying out sludge dewatering, sludge stabilizer is added to sludge and is fully stirred with sludge, the addition amount of the sludge stabilizer is 20%~40% of absolute dry mud amount;Sludge obtained in the above step is added with the organic dewatering agent, so that the concentration of organic dewatering agent in sludge is 0.02%~0.25%, and pressure filtration dewatering is carried out using plate and frame filter press.The present application adopts stabilizer special for sludge dewatering auxiliary reagent of plate and frame filter press, increases the squeezing effect of plate and frame dewatering squeezing stage, can destroy some colloidal particles in sludge and the molecular structure of original polyacrylamide of sludge, reduces the viscosity of sludge.

The application discloses a kind of transparent anti-fog self-cleaning coating and preparation method thereof, specifically as follows: (1) a certain mass of tetrabutyl titanate, concentrated hydrochloric acid, silane coupling agent is dissolved in organic solvent, stir for a proper time, and is recorded as reaction liquid 1; (2) a certain mass of acrylamide, polyvinyl alcohol, aminated polysilsesquioxane, ammonium persulfate, N, N-methylene bisacrylamide is dissolved in water, stir uniformly, and is recorded as reaction liquid 2; (3) reaction liquid 1 is spin-coated on clean glass sheet, dried and taken out, spin-coat reaction liquid 2, continue to dry, obtain transparent anti-fog frost coating with persistent anti-fog performance.The application has simple preparation process, and the prepared coating has excellent anti-fog performance, anti-frost performance, anti-fouling performance, transmittance and stability, which solves the problem that anti-fouling coating is limited in application scenarios such as photovoltaic glass and front windshield, which have demand for transparency.

The invention relates to the technical field of detection devices, in particular to a method and system for detecting foreign matter between a movable workbench and a lower cross beam of a hydraulic machine. Comprising the following steps of S1, reference distribution model establishment, S2, detection parameter threshold setting, S3, real-time collection and detection, S4, characteristic value calculation, S5, state judgment and S6, execution control. And the detection system consists of a displacement sensor, a data acquisition and preprocessing module, a calculation and control module, an execution module and a self-adaptive updating unit. Through the detection system and the detection method, tiny foreign matters which are difficult to find by human eyes or foreign matters with colors similar to the background can be rapidly detected and recognized, and the probability of missed detection is greatly reduced; core structural parts such as the movable workbench, the lower cross beam and the machine body are protected against damage of abnormal stress, so that the service life of the whole hydraulic machine is prolonged, and long-term precision and stability of equipment are kept.

The invention discloses a preparation method of an efficient and stable industrial-grade OER nickel-iron catalyst. According to the method, nickel nitrate hexahydrate, ferric nitrate nonahydrate and anhydrous sodium nitrate are uniformly dissolved in ultrapure water to form a mixed precursor solution, and then the catalyst is prepared through an in-situ reaction by adopting a constant-temperature and normal-pressure impregnation method. According to the invention, anhydrous sodium nitrate is utilized to introduce abundant nitrate ions to carry out intercalation modification on a nickel-iron layered structure, so that on one hand, the energy barrier of oxygen evolution reaction (OER) is effectively reduced, and the kinetic process of the reaction is obviously accelerated; on the other hand, the unique interlayer anion intercalation structure can effectively anchor active sites, and dissolution and loss of active elements such as iron in the reaction process are inhibited to a great extent. The prepared catalyst is high in catalytic activity, simple and convenient in preparation process and excellent in attenuation resistance, and can meet the requirement of long-acting stable operation for hundreds of hours under industrial-grade large current density.

The application belongs to the technical field of double-core microbead preparation, and particularly relates to a double-core microbead production process based on a cone tip matching three-dimensional microfluidic chip and application. The production process comprises the following steps: (1) raw material conveying: conveying the required materials through different pipelines to the cone tip matching three-dimensional microfluidic chip under insulation conditions; (2) material flow shearing: shearing the required materials in the cone tip matching three-dimensional microfluidic chip to obtain double-core droplets; (3) cooling and forming; and (4) product collection. The cone tip matching three-dimensional microfluidic chip structure can be used for accurately producing double-core microbeads, can realize accurate wrapping of the double-core microbeads, can realize accurate regulation of the particle size of the double-core microbeads, and can provide double-core microbeads with high structural consistency and high yield. Meanwhile, the continuous production of the double-core microbeads can realize stable, rapid and large-scale preparation, so that the microbeads can be widely applied in the fields of medicine, cosmetics, food and the like.

The utility model discloses double-channel ion concentration intelligent detection equipment which comprises an equipment base, a pure water tank is arranged on the equipment base, one side of the pure water tank is communicated with an electrode box, one side of the electrode box is further communicated with a medicament box, and one side of the medicament box is communicated with an automatic dosing device. An automatic sampling device communicated with the electrode box is also arranged on the equipment base; a communicated waste liquid box is arranged on one side, far away from the automatic sampling device, of the electrode box; a pure water pump is arranged between the pure water tank and the electrode box, and a water inlet pump is arranged between the automatic sampling device and the electrode box; the electrode box comprises a fluorine ion selective electrode, a first reference electrode, a chloride ion selective electrode, a second reference electrode, a first PH meter and a second PH meter.

This invention discloses a cell culture chip device and method for multiple factors including concentration, temperature, and light intensity. The device includes a light gradient chip, a cell capture culture chip, a temperature conduction film, and a temperature gradient chip. The temperature gradient chip has several heating channels filled with liquid metal material. The light gradient chip has an inlet, an inlet channel, a light gradient unit, an outlet channel, and an outlet. An infusion channel connects the inlet and outlet channels, and the infusion channel has a light-absorbing reservoir chamber. This invention enables on-chip cell culture studies under three-factor stimulation conditions: drug concentration gradient, temperature gradient, and light intensity gradient. It supports efficient localization and long-term stable culture of target cells and can synergistically apply these three-factor stimulation conditions. It allows real-time observation of cell proliferation behavior under these stimulation conditions and subsequent metabolite and genomic analysis.

The invention discloses a cellulose membrane-based fluorescence colorimetric sensor based on a Tb-AMP compound as well as a preparation method and application thereof, and belongs to the cross technical fields of new materials, fluorescence sensors, inspection and detection and the like. The fluorescent colorimetric sensor takes a cellulose membrane as a substrate, and the cellulose membrane is loaded with a Tb < 3 + > and AMP compound after carboxymethylation. Through the synergistic effect of the lanthanide series metal Tb-AMP compound and in combination with the porous characteristic of the cellulose membrane, high sensitivity, high selectivity and visual detection of FQs are achieved, meanwhile, the performance is not changed after the cellulose membrane is stored for 60 days, the cellulose membrane has long-term stability, the cellulose membrane serves as a substrate, the raw material cost is low, and the method is suitable for industrial production. The method can be widely applied to real-time visual detection of FQs in practical samples such as drinking water, environmental water and milk.

The invention relates to the technical field of electromagnetic shielding materials, and particularly discloses a flexible electromagnetic shielding film and a preparation method thereof. The flexible electromagnetic shielding film comprises a substrate layer, a silver nanowire-chitosan gel layer and a SiO2-TiO2 hybrid layer which are sequentially arranged from inside to outside, and the silver nanowire-chitosan gel layer comprises gelatin (dry weight) and a silver nanowire-chitosan composite material with the mass ratio of 1: (5-20). The preparation method of the flexible electromagnetic shielding film can be used for producing the flexible electromagnetic shielding film, and has the advantages that the electromagnetic shielding effectiveness, flexibility and environmental stability of the electromagnetic shielding film are synergistically improved at the same time, and the electromagnetic shielding film has high electromagnetic shielding effectiveness, excellent flexibility and environmental stability.

This invention discloses a temperature gradient cell capture culture chip device and method, comprising a cell capture culture chip, a temperature conduction film, and a temperature gradient chip. The cell capture culture chip is provided with an inlet, an inlet channel, an outlet channel, and an outlet, with the inlet and outlet channels correspondingly connected to cell capture culture chambers. The temperature gradient chip is provided with several heating channels, the interior of which is filled with liquid metal material. Each heating channel includes several semi-annular cavities and several linear cavities. The semi-annular cavities on the heating channels combine to form a circular heating area. This invention enables on-chip cell culture studies under dual-factor stimulation conditions of drug concentration gradient and temperature gradient, supporting efficient localization and long-term stable culture of target cells. It can also synergistically apply dual-factor stimulation conditions of drug concentration gradient and temperature gradient, allowing real-time observation of cell proliferation behavior under these stimulation conditions and subsequent metabolite and genomic analysis.

The application belongs to the technical field of electrocatalytic hydrogen production, and particularly relates to an off-grid alkaline hydrogen production electrocatalyst coupled with a crystal lattice hydrogen and a gradient layered structure, a preparation method and application thereof. The application provides a low-cost and high-performance alkaline hydrogen production electrocatalyst and a preparation method thereof. The electrocatalyst adopts tungsten carbide (WC) as a carrier, and is compounded with oxygenophilic metal (Ni or Ru) and MnO2 to form a composite electrocatalyst with a gradient layered structure. The technical advantage lies in that the MnO2 / WC interface is used to optimize the de-intercalation process of the crystal lattice hydrogen, and the bottleneck of hydrogen desorption is solved; the Ru(Ni) / WC gradient layered interface is used to promote water molecule dissociation and enhance the anti-start-stop stability. Benefiting from the above-mentioned synergistic effect, the prepared Ru(Ni)-MnO2 / WC electrocatalyst exhibits excellent catalytic activity and outstanding long-term stability in alkaline HER.