20results about How to "Reduced effectiveness" patented technology

The present application relates to the field of Gastrodia elata cultivation, and particularly relates to a method for continuously planting Gastrodia elata in old planting holes. The present application effectively improves the yield of Gastrodia elata, and significantly reduces the incidence of new Gastrodia elata and the decay rate of mother Gastrodia elata by scientifically planting after rhizoma polygonati. In the present application, the breeding hole is sexual reproduction, and it does not need to cultivate armillaria bed. The armillaria, fungus material and Gastrodia elata seeds can be placed at the same time. The planting hole is asexual reproduction. Since the Gastrodia elata seed needs a large amount of nutrient elements, the armillaria bed needs to be cultivated. This operation mode can form the difference of microbial community between the breeding hole and the planting hole, which is beneficial to ecological competition, and thus improves the soil recovery and improvement.

The invention discloses an ineffective potential suppression structure for a small inductosyn, and belongs to the technical field of inductosyn. The invention aims at the application requirements of high precision and small size of the inductosyn. A stator effective conductor of the inductosyn is arranged on the front surface of the stator substrate and is arranged along the whole circumference of the stator substrate; a stator substrate and a rotor substrate of the inductosyn are made of ferromagnetic materials. Stator ineffective conductors of the inductosyn are arranged on the back face of a stator substrate and are arranged along the whole circumference. The stator non-effective conductor and the stator effective conductor are connected through dense via holes; a stator effective conductor and a rotor conductor of the inductosyn are arranged in a radial alignment manner. According to the stator design scheme based on the double-layer metal-based MCPCB, the ferromagnetic material is used for improving the signal strength and shielding the ineffective potential, the precision and the signal-to-noise ratio are improved, meanwhile, the radial and axial space occupation is reduced, and the application requirement of the induction synchronizer in a small precise servo system is met.

The invention discloses a resonant dual-active bridge converter and a control method, and the converter comprises a primary full-bridge circuit, a secondary full-bridge or half-bridge circuit, a transformer, and an LC resonant network composed of a resonant inductor and a resonant capacitor which are connected in series. The control method comprises the following steps: acquiring parameters of an input voltage V1, an output voltage V2, a transmission power P, a transformer turn ratio N, a resonant inductance Lm and a resonant capacitance Cr of the converter; and calculating a primary fundamental wave equivalent voltage and a secondary fundamental wave equivalent voltage, and calculating an inner phase shift angle alpha between a first bridge arm and a second bridge arm in the primary full-bridge circuit through the primary fundamental wave equivalent voltage and the secondary fundamental wave equivalent voltage. The LLC converter has the beneficial effects that the inherent defects that the gain range of a traditional LLC converter is narrow (generally only 0.8-1.2) and the circulating current is sharply increased and the efficiency is sharply reduced when the voltage is seriously mismatched in the traditional phase-shifting DAB are fundamentally overcome.

The present application provides a kind of methanol hydrogen energy risk assessment method and device based on fusion strategy for ship, it is related to system safety engineering and risk management technical field, the risk assessment method of the present application includes: through system level hazard analysis, the unsafe control behavior of power system is identified, and combined with component level failure analysis, a hazard causal chain from bottom physical failure mode to top system level hazard is constructed;Based on hazard causal chain, a hierarchical causal hazard and operability knowledge graph is constructed;Through multi-modal perception to the running state of power system, unstructured multi-modal data stream is converted into a structured semantic event sequence in real time;Structured semantic event and causal hazard and operability knowledge graph are matched and cognitively reasoned to output the diagnosis report to the current risk state of power system, so as to complete risk assessment.

This invention provides a method for the resource utilization of potassium-containing metallurgical solid waste. The method comprises seven steps: ash transportation and storage, pulping, leaching, filtration, carbon removal, water treatment, water storage, and irrigation. This invention achieves a potassium removal rate of over 95% and a sodium removal rate of over 89% after treating the potassium-containing metallurgical solid waste. The leaching residue is recycled in the sintering process of the metallurgical industry, reducing the alkali content of the sintered ore, improving the efficiency of blast furnace ironmaking, and realizing the low-cost recovery and effective utilization of potassium resources from potassium-containing metallurgical solid waste.

The invention relates to a virtual link access method and device and electronic equipment, and is applied to a server side, and the method comprises the steps: responding to an access request of a user for a virtual link, and obtaining user behavior information and environment information; the user behavior information is corresponding information when a user interacts with a server, and the environment information is information corresponding to a network where the user equipment is located and the user equipment when the user equipment uses the token; generating a token according to the user behavior information and the environment information; the token has a corresponding period of validity and complexity; and sending the token to user equipment of the user, so that the user accesses the virtual link through the user equipment according to the token. According to the embodiment of the invention, the token is dynamically generated according to the user behavior information and the environment information, and the token has the corresponding period of validity and complexity, for example, the complexity of the token can be improved and the period of validity can be shortened in a high-risk scene, so that the security risk can be reduced when the virtual link is accessed based on the token.

The invention provides a control method, system and device of a resonance-based isolated active bridge converter and a medium. The system comprises a primary side circuit module, an L-C series resonant cavity, a high-frequency transformer and a secondary side circuit module. The method comprises the following steps of: sampling primary and secondary voltage and current, calculating voltage gain, and solving threshold current of primary and secondary switching tubes for realizing zero voltage switching (ZVS) in combination with junction capacitance and dead time; geometric constraints of resonance current and capacitor voltage are established based on phase plane analysis, the proportions of a primary side inner phase shift angle, a secondary side inner phase shift angle and an outer phase shift angle relative to a resonance period are solved in a unified mode, and then the switching frequency is determined; and converting to obtain an actual phase shift angle and generating a gate pole driving signal, thereby realizing full-working-condition ZVS of the primary and secondary side devices. The soft switching boundary is accurately given in the wide voltage gain and wide load range, the peak value and the effective value of the resonance current are remarkably reduced, the conduction and switching loss are considered, the circulation is suppressed, and the efficiency and the power density are improved.

The embodiment of the invention provides a frequency conversion and phase shift control method for an SSDAB converter for expanding the applicable power range of MBD-GaN, and relates to the technical field of converter control, and the method comprises the steps: obtaining an AC side voltage, an AC side current and a DC side voltage of a single-stage dual-active bridge SSDAB converter through setting an initial switching frequency; obtaining a voltage gain parameter and a normalized power parameter; obtaining a real-time operation interval according to a preset operation interval judgment mechanism; and taking minimization of a switch stress factor as a target to obtain a limited switch frequency, an inner phase shift quantity, an outer phase shift quantity and an outer phase shift angle, and inputting the values into a PWM module to generate a driving signal so as to complete frequency conversion and phase shift control of the SSDAB converter. The problem that the applicable power range of an MBD-GaN device is limited when an SSDAB converter is in a high-power working condition in the prior art is solved. And the effects of greatly reducing the current stress and the current effective value, reducing the switching loss and expanding the power application range are achieved.

The application discloses a method for promoting As oxidation by activating goethite with antibiotic molecules, and comprises the following steps: S1, goethite preparation; S2, adjusting the pH of a solution containing antibiotic molecules and trivalent arsenic to 5.5-6.5, adding goethite, and carrying out reaction in dark at 23-27 DEG C and 150-190 rpm for 2-72 h to realize the activation of goethite by antibiotic molecules and further complete As oxidation; wherein the concentration of antibiotic molecules in the solution is 45-55 mu M, the concentration of trivalent arsenic is 2.67 mu M, and the adding ratio of goethite to the solution to be treated is 30-50 mg:20 ml; the application firstly proposes that antibiotic molecules can complex and reduce the surface Fe(III) of goethite to generate Fe(II), further promotes the oxidation of As(III), and provides a brand-new treatment mode for the pollution conversion of composite pollutants.

The application relates to the technical field of electric signal processing, in particular to an intelligent lightning interceptor suitable for a railway overhead line system framework area and a lightning protection method, which comprises the following steps: collecting lightning currents at each moment on each discharge rod of the intelligent lightning interceptor; determining a discharge rod corresponding to a lightning main channel based on the change rate of the lightning currents on each discharge rod; determining a main path linear deviation at the current moment; acquiring electromagnetic interference coefficients of each side branch path at the current moment, screening real lightning side branch paths in all side branch paths; determining a side branch interference degree of the real lightning side branch path at the current moment; correcting the lightning currents of the lightning main channel at the current moment based on the main path linear deviation, combining the lightning currents of the real lightning side branch path at the current moment and the side branch interference degree, acquiring total lightning currents at the current moment, and distributing and dredging the total lightning currents. Therefore, the effectiveness and precision of the lightning interceptor are improved.

The invention relates to the technical field of organic fertilizers and soil remediation. The invention provides a microbial organic compound fertilizer for soil remediation. The microbial organic compound fertilizer is characterized in that a complex formed by covalent bonding of modified UiO-66 (Zr) bifunctional ligand MOF nanoparticles and low-temperature activated wood biochar through an epoxy silane coupling agent is taken as a core; a PEC microcapsule shell formed by chitosan salt and sodium carboxymethyl cellulose under the near-neutral and low-salt condition is coated outside the PEC microcapsule; phosphorus solubilizing bacteria with metal response regulation and control are packaged inside, trehalose, skimmed milk powder and glycerin are matched for keeping alive, and low-temperature drying and granulation are carried out. The compound fertilizer can release phosphorus as required at a pollution peak value, stabilize and passivate heavy metals such as Cd, Pb and the like, the availability of available phosphorus and crops is improved, the finished product viable bacteria is greater than or equal to 1 * 10 CFU / g, and the water content is 1t; the structure is stable, and the storage and transportation performance is excellent.

The application discloses a cross-domain locomotive bearing fault diagnosis method and device based on a twin network, which comprises collecting vibration signals of a locomotive bearing and current signals of a traction motor, pre-processing the vibration signals and the current signals and obtaining a frequency spectrum; a twin network containing a weight sharing branch is constructed, the vibration signal frequency spectrum is input into the twin network, a vibration domain feature encoder is obtained by performing self-supervised training on an encoder based on a contrastive learning loss function; a classifier for fault type classification and speed prediction is constructed based on the vibration domain feature encoder, a vibration domain bearing fault diagnosis model is obtained by performing supervised fine-tuning on labeled vibration signal samples; the vibration domain feature encoder is migrated to a current signal domain, a current domain classifier is trained based on labeled current data, and a current domain bearing fault diagnosis model is obtained; current signals collected under a to-be-diagnosed working condition are input into the current domain bearing fault diagnosis model, and corresponding bearing fault types and speed information are output.

The application discloses a method for preparing ecological restoration soil by repairing contaminated spoil through regeneration, and comprises the following steps: mixing dry straw powder and bimetallic alkali liquor, stirring and drying, pyrolyzing under a protective atmosphere at a temperature above 500 DEG C to obtain modified biochar material; mixing the modified biochar material with microbial liquid, oscillating and adsorbing, and freeze-drying to obtain carbon-based biological composite material; mixing the carbon-based biological composite material with shield spoil to obtain improved shield spoil; and mixing the improved shield spoil with organic fertilizer to obtain ecological restoration soil; the method removes toxic and harmful components in the shield spoil through biodegradation, the modified biochar improves the structure of the shield spoil, and the specific component compound fertilizer is used, so that the shield spoil is recycled, and the shield spoil-based ecological restoration soil is obtained.

The invention discloses a method for preparing a functional biological flora in a targeted biological bacterium and host original flora coupling mode and application of the functional biological flora in ginseng, and relates to the field of agricultural microbial technology and traditional Chinese medicinal material cultivation, and the method comprises the following steps: a, constructing a targeted biological strain resource library, and screening a functional single strain; b, purifying and compounding the single strain to form a compound flora; the core of the method is in vitro pre-coupling, exogenous targeting bacteria and host original flora are subjected to symbiotic adaptation in advance in a controlled environment to form a stable micro-ecological complex, the micro-ecological complex can be rapidly colonized and establish advantages after being applied to soil, the industrial pain point that a traditional microbial agent is living but not long and long but not effective is solved, and the selected strains are scientific in combination and easy to control. The bacillus subtilis and the brevibacillus laterosporus are used for resisting diseases and promoting growth, the bacillus mucilaginosus and the pseudomonas fluorescens are used for activating nutrients and removing heavy metal toxicity, and the arbuscular mycorrhizal fungi are used for expanding the root system absorption area.

The present application belongs to the technical field of energy optimization scheduling, and particularly relates to a robust optimization scheduling method and device for a comprehensive energy system based on adjustable control capacity, which comprises the following steps: establishing a gas supply system pipe storage model; establishing a time-shiftable load control model for a power distribution network, a time-shiftable load control model for a natural gas network, and a demand response load model for the power distribution network; constructing an optimization objective function considering the operation cost of the power distribution network and the operation cost of the natural gas network; establishing a robust optimization model for the comprehensive energy system considering load uncertainty based on the optimization objective function; constructing a double-layer robust optimization algorithm, in which a sub-problem is used to solve the worst operation scenario, and a main problem is used to optimize the operation cost of the comprehensive energy system, so as to obtain an optimized scheduling scheme for the comprehensive energy system. The present application can effectively cope with the complex operation problems of the electric-gas coupled comprehensive energy system through the scheduling strategy, and improve the flexibility and adaptability of the system.

The invention relates to the technical field of water quality detection, in particular to a water quality detection device adopting a chemical analysis method and an analysis method.The device comprises a suitcase and a plurality of test tubes, a cover plate is hinged to the top of the suitcase, a base is fixedly connected to the inner bottom wall of the suitcase, a supporting rod is fixedly connected to the top of the base, and a rotating table is fixedly connected to the supporting rod; a plurality of placing grooves for placing test tubes are formed in the top of the rotating table, and a rotating assembly for driving the rotating table to rotate is arranged in the suitcase; a grinding assembly for grinding reagent raw materials is arranged on the rotating table; the top of the base is fixedly connected with a drain pipe; one end, far away from the base, of the drain pipe extends above the placing groove; the side wall of the suitcase is communicated with a sampling pipe. The positions of the test tubes are rapidly adjusted through rotation of the rotating table, so that the liquid discharge tube rapidly corresponds to different test tubes, meanwhile, the sampling tube continuously collects water samples with specified doses, and the water samples are sequentially discharged into different test tubes through the liquid discharge tube, so that the detection difficulty is reduced, and the detection efficiency is improved.

This utility model relates to the technical field of active ingredient extraction and concentration, and in particular to an extraction and concentration device, including an extraction tank and a concentration tank, connected by a connecting pipe. A support filter plate is installed in the lower part of the extraction tank, and a slag-removing component fitted to the inner diameter of the extraction tank is placed on the support filter plate. The extraction tank has a slag-removing port allowing the slag-removing component to pass through. The slag-removing component includes multiple chain plates hinged end-to-end, forming an annular body fitted to the inner diameter of the extraction tank. Multiple sets of circumferentially distributed electromagnets are installed on the outer wall of the extraction tank near the support filter plate, and the chain plates are made of magnetic material. A rounded inlet is provided at the slag-removing port, and rollers are rotatably mounted on the chain plates. This device improves the ease of cleaning solid particle residue in the extraction tank while reducing the content of active ingredients and solvents in the solid particle residue.

The invention discloses a composite permeable reactive barrier material based on a lanthanum-iron-magnesium-aluminum modified silicon-based porous medium and application of the composite permeable reactive barrier material, and relates to the technical field of environmental restoration. A composite permeable reactive barrier material based on a lanthanum-iron-magnesium-aluminum modified silicon-based porous medium comprises a reactive medium filled in a permeable reactive barrier, the reactive medium is composed of a phosphorus removal material, a heavy metal curing material and a microbial activator, and the surface of each component is coated with a slow release layer; wherein the phosphorus removal material is a silicon-based porous medium modified by lanthanum, iron, magnesium and aluminum elements. Compared with the prior art, according to the prepared composite reactive barrier system, through the synergistic effect of multi-component materials, phosphorus, heavy metal and organic matter in underground water are efficiently and synchronously removed, and the problems that a traditional medium is single in remediation target and prone to blockage are solved. Due to the specific design of the slow-release layer, the structural stability and the long-term effect of the material are remarkably enhanced, and the microbial activity and the extremely high pollutant removal efficiency can still be maintained in a low-temperature environment.

The invention belongs to the technical field of agricultural microorganisms, and discloses a coxsackii strain which is named as coxsackii P1-4 and preserved in China Center for Type Culture Collection on September 20, 2023, the preservation address is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 20231759. The invention further discloses a microbial agent containing the bacterial strain, application of the microbial agent in promoting rice growth and / or improving soil health and application of the microbial agent in reducing the content of cadmium in soil and / or reducing the content of cadmium in rice. The coxakella P1-4 strain and the microbial inoculum thereof provided by the invention can synchronously and remarkably improve the key nutrient indexes of soil, can remarkably improve the contents of nutrients such as NH4-N, NO3-N, organic phosphorus and organic matters in the soil, and comprehensively improve the fertility and biological activity of the soil.

The invention discloses an ardealite slurry carbonization reaction device and method, and belongs to the technical field of industrial solid waste recycling and carbon capture. The device comprises a reaction kettle main body, a driving system, a stirring and wall scraping system, a gas distribution system and a manual regulation and control unit. Wherein a feeding turntable rotating along with a main shaft and an annular gas distribution pipe positioned above the turntable are arranged in the reaction kettle, so that efficient initial premixing of slurry and CO2 gas is realized; a stirring paddle and a wall scraping anchor type frame are integrally mounted on the main shaft, the stirring paddle forms a whole-kettle forced circulation flow field to strengthen mass transfer and suspend solid particles, and a scraping plate mounted on the wall scraping frame continuously scrapes inner wall scabs and boosts discharging; a large-diameter inclined discharge hole is formed in the bottom of the reaction kettle; the CO2 flow, the stirring rotating speed and the temperature are preset and adjusted through a manual valve, a rotor flow meter and a local gearbox. Through a pure mechanical structure optimization synergistic effect, the problems of non-uniform gas distribution, low mass transfer efficiency, easiness in scabbing, difficulty in discharging and dependence on a complex electric control system are solved, and the device has the advantages of reliability in operation, simplicity and convenience in operation, high treatment efficiency and low cost.