99results about How to "Clear steps" patented technology

The invention relates to an ion regulation inhibitor for preventing slurry from covering, application and a lepidolite ore beneficiation method. The invention discloses an ion regulation inhibitor for preventing slime from covering. The ion regulation inhibitor comprises a starch inhibitor, a sodium salt inhibitor and a metal ion regulator. The invention provides application of the ion regulation inhibitor capable of preventing the slime from covering in ore dressing of lepidolite ore. The invention provides a beneficiation method of lepidolite ore. The beneficiation method comprises the following steps: adding water into ore powder of the lepidolite ore to prepare ore pulp; a pH regulator, a collecting agent and the ion regulation inhibitor are added into the ore pulp for roughing, and roughing concentrate and roughing tailings are obtained; the ion regulation inhibitor is added into the roughing concentrate for concentration, and lepidolite concentrate is obtained; and a collecting agent is added into the roughing tailings for scavenging, and flotation tailings are obtained. The problems that an existing lepidolite ore beneficiation method is large in lithium ore loss, low in beneficiation efficiency and complex in process are solved.

The present invention proposes a test and detection method for an overload protection type viscous damper, the method comprising the following steps: adopting a static loading test, controlling the loading unit of the test machine to make the overload protection type viscous damper to be tested move at a uniform speed, and recording the limit displacement value of the reciprocating motion of the damper; setting a total of four independent tests, respectively testing at three speed gears and corresponding test displacements, the test speed and test displacement in the first test are consistent with the parameter settings in the last test. By adopting a static loading test and uniform motion control, the actual working state of the damper can be accurately simulated, the accuracy and representativeness of the test results can be improved, and by comparing the maximum output deviations of the first and fourth tests, the durability and consistency of the damper can be effectively evaluated to ensure its reliability in long-term use.

The invention discloses an identification method based on microorganism culture and detection and an identification system based on microorganism culture and detection suitable for the method. The method comprises the steps of bottling, culture and detection, conveying to a plate transfer area, upwards pricking a bottle opening for deflation, taking a plate to be used, scribing the plate, culturing in an incubator, detection and recycling the plate. Aerosol released by a culture bottle is pumped away in the bottle opening upward hole pricking and deflating step, a blood sample or other body fluid in a plate is prevented from being polluted by the aerosol, the identification system comprises a case, a blood sampling device and an air pumping device, the blood sampling device comprises a first culture bottle clamping jaw and a seed transferring device clamping jaw, and when the seed transferring device clamping jaw is located above the first culture bottle clamping jaw, the air pumping device is used for pumping air into the first culture bottle clamping jaw. The needle head of the seed transferring device is inserted into the culture bottle, and when the culture bottle releases gas, the gas is pumped away in time by the gas pumping device, so that a blood sample or other body fluid in the plate is prevented from being polluted, and the treatment and detection accuracy of the blood sample or other body fluid is improved.

The invention discloses a liquid nitrogen freezing and carbon dioxide blasting combined anti-reflection device and method. The device comprises a freezing pipe and an anti-reflection assembly. The anti-reflection assembly is mounted on the inner side of the freezing pipe; the anti-reflection assembly comprises a flexible air bag, an excitation device and a sealing positioning ring; the sealing positioning ring sleeves the outer side of the flexible air bag, and the flexible air bag is provided with an extension section; an end socket is mounted outside the sealing positioning ring in a sleeving manner, and the sealing positioning ring fixes the extension section on the end socket; the exterior of the end head is fixedly connected with the freezing pipe; the excitation device is arranged in the flexible air bag; and a firing line is mounted on the excitation device. The mechanical property of the coal body is optimized and improved through liquid nitrogen freezing, so that the mechanical strength of the coal body is enhanced, the brittleness is greatly improved, and then CO2 phase change blasting is performed to crack the coal seam; for a low-permeability soft coal seam, hole collapse caused by soft coal in single blasting is avoided, more cracks can be generated in the coal seam after CO2 blasting, the fracturing and permeability increasing effects are greatly improved, and a good promoting effect is achieved on gas extraction.

The application discloses a preparation method of a sodium ion battery hard carbon negative electrode material based on step-by-step synergistic regulation, and comprises the following steps: S1, biomass pretreatment; S2, low-temperature pre-carbonization to obtain biomass pre-carbonized carbon; S3, physical activation: the pre-carbonized carbon is placed in an activation atmosphere to perform medium-temperature activation, and biomass activated carbon is obtained; S4, high-temperature carbonization: the biomass activated carbon is placed in an inert atmosphere to perform high-temperature carbonization, and a hard carbon intermediate is obtained; S5, chemical vapor deposition coating: the hard carbon intermediate is placed in a mixed atmosphere of a coating carbon source and an inert gas to perform chemical vapor deposition coating, and a surface-coated biomass hard carbon negative electrode material is obtained. The application can realize a higher closed pore volume at a milder temperature, and the synergistic regulation pore forming mode of activating and forming pores first and then high-temperature closing pores also avoids the insufficient closed pores caused by single high-temperature treatment.

The invention belongs to the technical field of petroleum well logging, and discloses a method for eliminating array induction direct coupling signals, which comprises the following steps of: calibrating the unit thickness change of an adjusting piece and the quantitative contribution of each receiving coil direct coupling signal through electromagnetic simulation modeling and an underground environment equivalent experiment; the target thickness is solved and replaced through a linear correction model, closed-loop calibration is matched to enable a direct coupling signal to approach a preset threshold value, based on array induction logging, an existing three-coil system structure is difficult to thoroughly offset the direct coupling signal due to machining errors, useful signal extraction is seriously disturbed, the method does not need to modify a core structure of an instrument, operation is easy and convenient, adaptability is high, and the method is suitable for large-scale popularization and application. Direct coupling signals are eliminated accurately and thoroughly, the measurement accuracy of the stratum conductivity is effectively improved, and reliable data support is provided for oil and gas reservoir identification and evaluation.

The application belongs to the technical field of microfluidics, and particularly relates to a detection substrate and a preparation method thereof and a microfluidic chip. The detection substrate is used for a microfluidic chip. The microfluidic chip comprises a driving substrate arranged opposite to the detection substrate. The detection substrate is located below the driving substrate. The detection substrate comprises a substrate, a pressure transmission structure and a detection unit. The pressure transmission structure is arranged on the substrate. The detection unit is arranged between the substrate and the pressure transmission structure and is used for generating an electrical parameter change in response to external pressure. When a liquid drop is located between the driving substrate and the detection substrate, the gravity of the liquid drop is transmitted to the detection unit through the pressure transmission structure, so that the electrical parameter change of the detection unit is caused to determine the position of the liquid drop. The application can realize accurate detection of the position of the liquid drop by causing the electrical parameter change through the gravity of the liquid drop.

The application discloses a distributed interval observer optimization design method for multi-dynamic linear systems, and aims at a multi-dynamic distributed linear system disturbed by a bounded noise. Firstly, a reversible linear transformation is used to decompose an observable virtual subsystem. Then, a distributed interval observer containing output error feedback correction is designed to construct a local state interval estimation. Based on interval operation, an estimation error dynamic and its upper and lower bound explicit expressions are derived to verify the interval effectiveness. Further, Lyapunov stability theory and linear matrix inequality are used to optimize the observer gain and the collaborative coupling gain under Metzler, Hurwitz and numerical reliability constraints. Finally, the observation nodes are updated collaboratively based on the communication topology. The application does not require the system to meet strict assumptions such as cooperativeness, only needs noise upper and lower bound information, can adapt to various dynamic characteristics such as diagonal stability, strong coupling and weak damping oscillation, and has the advantages of high estimation accuracy, good numerical robustness and distributed collaboration support.

This invention belongs to the field of supercapacitor technology, specifically relating to a molybdenum oxide-molybdenum disulfide@polytannic acid electrode material, its preparation method, and its applications. Using molybdenum foil as the current collector and electrode, this invention prepares a molybdenum oxide-molybdenum disulfide electrode using electrochemical oxidation and hydrothermal methods. A polytannic acid coating is deposited on its surface to prepare a biodegradable molybdenum oxide-molybdenum disulfide@polytannic acid electrode. This electrode is then sandwiched with a biodegradable gel electrolyte and encapsulated with a biodegradable encapsulation material to construct a biodegradable supercapacitor with self-discharge suppression capabilities. By depositing a polytannic acid coating on the surface of the supercapacitor electrode, its self-discharge behavior is suppressed. The polytannic acid coating can prevent parasitic Faraday reactions of impurity ions on the electrode surface and prevent charge transfer, thereby suppressing the capacitor's self-discharge behavior. Simultaneously, the electrode, electrolyte, and encapsulation material can all degrade in simulated body fluids, potentially opening up applications in implantable medical electronic devices.

The application discloses a deepwater oilfield development yield prediction method, an electronic device, an apparatus and a storage medium, wherein the method comprises: predicting the natural yield of old wells, the yield increasing potential of old wells, the yield of new wells, planned yield loss and non-planned yield loss for each prediction year respectively; wherein predicting the non-planned yield loss comprises: determining the development stage to which a well area belongs, wherein for the well area in the aging stage, a historical curve graph of the non-planned loss rate and time relationship is determined first, the non-planned loss rate in the prediction year is calculated by fitting the relationship between the non-planned yield loss rate and the production time of the aging stage in the curve graph, the non-planned loss rate in the prediction year is corrected by using a correction factor to determine the final non-planned loss rate in the prediction year, so as to determine the non-planned yield loss in the prediction year; and the deepwater oilfield development yield is calculated according to the above prediction results.

The invention discloses a durable composite steel wire rope material and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a steel wire; step 2, surface pretreatment; step 3, preparing a corrosion-resistant coating; step 4, adding wear-resistant particles; step 5, curing treatment; step 6, quality detection; the method has the advantages that a special formula and a preparation process are adopted, so that the steel wire rope can effectively resist the influence of factors such as abrasion, fatigue and corrosion in the long-term use process, the service life of the steel wire rope is greatly prolonged, safe operation of equipment and engineering can be ensured, and the service life of the steel wire rope is prolonged. Good toughness can also reduce local damage caused by accidental impact, the reliability of the steel wire rope is improved, the production process is easy to control, the production cost is reduced, the production efficiency is improved, environment-friendly raw materials and processes are adopted, pollution to the environment is reduced, the market competitiveness of products can be improved, and the steel wire rope is worthy of popularization and application. And reliable product guarantee is provided for users.

The invention relates to the technical field of road stone preparation, and discloses a phosphogypsum-based all-solid waste environment-friendly road stone preparation process, which comprises: 1, carrying out a dehydration treatment on phosphogypsum to reduce the free water content to less than 1.5%; step 2, carrying out high-temperature calcination on the dehydrated phosphogypsum in a temperature range of 650 DEG C to 750 DEG C to form alpha-semi-hydrated gypsum; 3, adding a sodium silicate solution into the calcined ardealite for chemical modification to generate calcium silicate gel, so as to improve the water resistance and shrinkage resistance of the calcium silicate gel; and step 4, adding solid waste materials such as the building waste, the fly ash, the slag and the waste glass powder into the phosphogypsum according to a given proportion, crushing and uniformly mixing. The ardealite and the solid waste material are compounded, and an optimized process of a green bio-based binder and a nano material is adopted, so that the mechanical property, the water resistance, the toughness and the weather resistance of the road stone are remarkably improved, and the road stone has the advantages of high efficiency, environment friendliness, long service life, economy and applicability.

The invention belongs to the technical field of natural pharmaceutical chemistry and medicine, and relates to a sesquiterpene compound and a separation method thereof, and application of the sesquiterpene compound in blood sugar reduction. According to the 14-acetylated 1-indanone type sesquiterpene glucoside compound disclosed by the invention, a new 14-acetylated 1-indanone type sesquiterpene glucoside compound, namely 14-acetyl-(2S, 3S)-Pterosine C-3-O-D glucoside, is separated and identified from pteris multifida poir for the first time. According to the compound, a new chemical entity is added for a natural product library, and valuable candidate molecules are provided for drug research and development. The sesquiterpene compound disclosed by the invention shows excellent alpha-glucosidase inhibitory activity; an in-vitro enzyme activity experiment shows that the sesquiterpene compound has a remarkable inhibition effect on alpha-glucosidase from yeast (the inhibition rate reaches 52.1% under the concentration of 10 mg / mL).

The invention relates to the technical field of assembly processes, in particular to an injector assembly process. An injector assembly technology comprises the following steps that S1, penholder feeding and detection are conducted, specifically, penholders are fed to a machining station of a conveying belt, and the heights of push rods in the penholders are detected; s2, feeding and detecting the cartridge bottle bracket; s4, feeding and detecting the pen cap; s5, feeding and detecting the cartridge bottle: feeding the cartridge bottle and detecting the height of a rubber plug of the cartridge bottle; s6, forward screwing of the penholder: calculating the number of turns of forward screwing of the penholder according to the height of the push rod obtained in the step S1 and the height of the rubber plug obtained in the step S5, and performing forward screwing on the penholder by a penholder forward screwing station according to the calculated number of turns of screwing; s7, the penholder and the cartridge bottle are pre-assembled; s8, pressing the pen holder and the cartridge bottle; s9, reversely screwing and resetting the pen holder; s10, the pen holder and the pen cap are assembled; and S11, discharging is conducted. The injector assembly process is high in assembly efficiency and high in yield.

The invention relates to the technical field of traditional Chinese medicine formulas, in particular to a traditional Chinese medicine formula for improving sleep condition, which comprises the following components: 18g-23g of black bean, 17g-22g of light wheat, 15g-30g of spina date seed, 0.5 g-1.5 g of juncus roemerianus, 2g-5g of lophatherum gracile, 2.5 g-4g of gastrodia elata, 2.5 g-4g of albizia flower, 2g-3.5 g of rose, 1g-2.5 g of raw liquorice and 50g-60g of lotus seed. The tuber fleeceflower stem in the formula is suitable for symptoms such as restlessness, insomnia and dreaminess, the radix paeoniae alba and the radix bupleuri are suitable for insomnia caused by uncomfortable liver qi and can enhance the effect of soothing liver-qi stagnation, medicinal materials with corresponding effects can be selected according to different reasons of insomnia, and therefore the treatment effect is more stable; however, the steps are relatively clear, the decoction process can be more convenient and accurate through assistance of modern equipment such as an electronic scale and a stirrer, and meanwhile, after decoction and concentration according to the formula, liquid medicine with a small size can be obtained and is convenient to carry and store.

The application belongs to the technical field of organic synthesis, and particularly relates to a preparation method of 4-bromopyrazole [3,4-D] -pyrimidine, and the specific steps are as follows: under the condition of anhydrous and anaerobic, 4-chloro-1H-pyrazolo [3,4-d] pyrimidine is reacted with a brominating reagent in an aprotic solvent to obtain 4-bromopyrazole [3,4-D] -pyrimidine. The preparation method provided by the application has the advantages of simple process route, clear steps, high yield of the target product, low cost, suitability for industrial production, considerable economic benefits, mild reaction condition and environmental protection.

The invention discloses high-pressure and high-temperature oil pipe rubber for a power steering system and a preparation method of the high-pressure and high-temperature oil pipe rubber. The high-pressure and high-temperature oil pipe rubber for the power steering system comprises the following raw materials in parts by weight: 80-120 parts of nitrile rubber, 4-6 parts of zinc oxide, 6-10 parts of magnesium oxide, 4-9 parts of an anti-aging agent, 1-2 parts of microcrystalline wax, 1-2 parts of stearic acid, 3-5 parts of a dispersing agent, 2-3 parts of an adhesive, 4-6 parts of coumarone, 2-8 parts of a vulcanizing agent, 1-3 parts of a vulcanizing aid, 5-20 parts of a plasticizer and 70-120 parts of filler. The nitrile rubber, the plasticizer and the selected anti-aging agent are adopted, so that the material keeps excellent performance at high temperature and in an oil medium, and the service life of the oil pipe is prolonged. The plasticizer and the filler are reasonably proportioned, so that the material has enough mechanical strength while keeping high flexibility, and can bear mechanical stress in a high-pressure environment. The preparation method is clear in steps, simple and convenient to operate and suitable for large-scale production. The raw materials which are easy to obtain and low in cost are adopted, and the production cost can be effectively reduced.

The invention relates to the technical field of farmland improvement, in particular to a farmland improvement zoning method and system, and the method comprises the following steps: 1, zoning factor selection and weight calculation; 2, processing partition basic data; 3, partition factor calculation and statistics; 4, performing partition data standardization calculation; and 5, constructing an accurate zoning model for farmland improvement. According to the method, farmland improvement suitability zoning can be accurately carried out, and a scientific and reasonable basis is provided for farmland improvement project planning and design.

The invention discloses a lamb scorpion hotpot seasoning and a preparation method of a lamb scorpion hotpot, and relates to the technical field of lamb scorpion hotpot preparation. The preparation method comprises the following steps: heating rapeseed oil and beef tallow, adding thick broad-bean sauce, chopped chilli sauce, oyster sauce, dried scallop and abalone juice, garlic cloves, rock candy, soy sauce, salt, amomum cardamomum, rhizoma kaempferiae, galangal and amomum tsao-ko, and slowly frying with soft fire until the fragrance is overflowing and the color is uniform to obtain sauce; putting 1-2kg of cleaned chicken and 45-55kg of lamb scorpions into a pot, adding water until all the food materials are covered, adding cut scallions, ginger and Chinese prickly ash, boiling with big fire, then turning to small fire, and slowly stewing for 2 hours, so that the lamb scorpions and the chicken fully absorb soup, and the meat becomes crisp and rotten; after stewing is completed, solid impurities in the sauce are filtered out, the sauce is poured into a pot containing the lamb scorpions and the chickens, and stewing continues to be conducted for 1.5-2 h till soup is thick. Through specific stir-frying and stewing processes, the lamb scorpion hotpot has rich fragrance and unique taste. Meanwhile, the combination of various seasonings not only improves the flavor of the food, but also enriches the nutritional ingredients, and meets the requirements of modern people on healthy diet.

The application discloses low-bitter rice residue peptide micelles, a rice residue protein hydrolysate and a preparation method and application thereof, and relates to the technical field of protein processing. The preparation method comprises the following steps: performing step-by-step enzymolysis on rice residue protein to perform directional cutting on the hydrophilic region and the hydrophobic region of the rice residue protein, so as to obtain an amphiphilic polypeptide mixture; adjusting the pH and the temperature, so that the amphiphilic polypeptide mixture is self-assembled to form rice residue peptide micelles, and low-bitter rice residue peptide micelles are obtained. The application aims to solve the technical problems that the existing rice residue protein enzymolysis product has significant bitterness, and traditional debittering technologies have the problems of nutrient loss or the need for external addition. A new mechanism of realizing physical debittering by constructing a supramolecular micelle structure is innovatively proposed and verified. The rice residue protein peptides after enzymolysis are self-assembled to form stable nanometer micelles through step-by-step enzymolysis and directional cutting, so that the hydrophobic groups causing bitterness are selectively embedded in the core of the micelles, and the contact of the hydrophobic groups with taste receptors is physically blocked.

The present invention discloses a fatigue life analysis method for a disk-shaft integrated integral blade disk structure, the steps of which are: obtaining the dangerous parts, stress distribution and stress gradient distribution of the disk-shaft integrated integral blade disk structure by a simulation analysis method; performing fatigue tests on standard smooth specimens and standard notched specimens as well as static tensile tests on materials at room temperature and high temperature, and combining the simulation analysis results with an influencing factor correction method to obtain a material stress-fatigue life relationship that considers influencing factors such as average stress, stress gradient and temperature; and then accumulating fatigue damage by a structural fatigue life analysis method to obtain the fatigue life of the disk-shaft integrated integral blade disk structure. The present invention combines test results, simulation analysis and traditional fatigue analysis methods, which is simple and intuitive, with clear steps and strong applicability. The present invention can be used to ensure the life requirements of air turbine starters and aircraft engines, and provide a sufficient and scientific life assessment basis for the design and manufacture of similar complex working components.

The invention discloses an apatinib-immune synergistic nano-drug based on bacterial source vesicles as well as a preparation method and application of the apatinib-immune synergistic nano-drug. The nano-drug is Apatinib-MVs, and the nano-drug takes a membrane vesicle secreted by parabacteroides coumarini as a carrier to entrap an anti-angiogenesis drug apatinib; in-vitro anti-tumor experiment results show that the nano-drug can exert an efficient anti-tumor effect through a dual synergistic mechanism of inhibiting tumor angiogenesis and activating anti-tumor immune response at the same time.

The invention relates to the technical field of ship lifts in water conservancy projects, in particular to an emergency braking checking method and system for a full-balance steel wire rope winch type ship lift. The invention provides a full-working-condition and multi-dimension integrated checking method aiming at the problems that an existing checking method is not adaptive to the characteristics of a full-balance steel wire rope winch type balance friction winding drum, the working condition coverage is incomplete, and the checking dimension is single. The method comprises the following steps: respectively calculating system equivalent mass and unbalanced load under normal lifting and water leakage empty working conditions; calculating system translation acceleration under each working condition based on the braking system parameters; selecting the maximum acceleration to calculate an impact load coefficient; and checking the strength and skid resistance of the steel wire rope on the basis. By means of the method, linkage checking of the load, the acceleration, the impact coefficient and the steel wire rope performance of the full-balance steel wire rope winch type ship lift in the emergency braking process is achieved, checking comprehensiveness, accuracy and engineering applicability are remarkably improved, and reliable support is provided for safety design of the ship lift.

The present invention provides an automatic detection system and method for the air tightness of a metal hose, comprising a conveying device, disassembly and assembly air supply devices are arranged on both sides of the conveying device, a detection box is set up above the conveying device, the conveying device comprises a circulating conveying mechanism, a plurality of groups of hose positioning mechanisms are arranged in a ring shape on the circulating conveying mechanism, the hose positioning mechanism comprises a clamping plate and a fixing plate arranged side by side, clamping assemblies are arranged at both ends of the clamping plate, a clamping cylinder is arranged on the top of the circulating conveying mechanism, a first release cylinder and a second release cylinder are arranged in sequence at the bottom of the circulating conveying mechanism, a good product collection basket is connected below the first release cylinder, and a defective product collection basket is connected below the second release cylinder. The detection method comprises: 1. loading; 2. feeding; 3. assembling a female head and a plug; 4. inflation detection; a. ventilation stage; b. pressure holding stage; c. deflation stage; d. abnormal alarm; 5. disassembling a female head and a plug; 6. good product collection; 7. defective product collection.

This invention relates to a method for preparing a vanadium selenide / vanadium oxide heterojunction photo-assisted zinc-ion battery, belonging to the technical field of vanadium selenide / vanadium oxide heterojunction photo-assisted electrochemical energy storage and zinc-ion battery. The method includes the following steps: mixing a selenium source solution and a vanadium source solution to obtain a reaction precursor solution; subjecting the reaction precursor solution to a hydrothermal reaction and washing to obtain vanadium selenide material; annealing the vanadium selenide material to form a vanadium oxide layer on its surface, obtaining a vanadium selenide / vanadium oxide heterojunction composite material; mixing the vanadium selenide / vanadium oxide heterojunction composite material, a conductive agent, and a binder, adding a solvent to prepare a slurry, coating the slurry onto the surface of a current collector, and drying to obtain a photocathode. The material and its application system described in this invention exhibit good specific capacity, rate performance, and cycle stability, and demonstrate good energy storage performance under illumination conditions; this invention is beneficial for further reducing electrode polarization and promoting the synergistic enhancement of electron transport and zinc-ion storage.

The invention discloses a ruthenium-platinum sub-nano alloy catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts. The ruthenium-platinum sub-nano alloy catalyst provided by the invention comprises ruthenium-platinum alloy, the particle size of the ruthenium-platinum sub-nano alloy catalyst is less than or equal to 10nm. Based on the discovery that ruthenium shows higher alkaline hydrogen evolution activity than platinum under alkaline conditions, ruthenium and platinum are matched to construct the ruthenium-platinum alloy catalyst, respective advantages of ruthenium and platinum can be combined, the loading amount of platinum is reduced, the catalytic activity of alkaline hydrogen evolution reaction and alkaline hydrogen oxidation reaction is remarkably improved, and the catalytic activity of the catalyst is improved. Moreover, the sub-nanometer size provides sufficient active sites for the reaction, and the catalyst has a good application prospect in hydrogen evolution of alkaline electrolytic water or preparation of alkaline hydrogen-oxygen fuel cells.

The application provides a tunnel composite stratum excavation induced frictional inclined pile bearing capacity loss calculation method, comprising obtaining tunnel parameters of a shield tunnel, structure parameters of an existing pile foundation and physical and mechanical parameters of a soil body; equivalent conversion of elastic modulus of a multilayer composite soil body into homogeneous single stratum elastic modulus, analysis of a soil body plastic zone and elastic zone range and boundary radius induced by tunnel excavation, establishment of a soil body arbitrary position radial stress and hoop stress distribution model; discrete treatment of an inclined pile along a pile length, discrimination of a stress region according to distances of pile body points to a tunnel center and calculation of corresponding soil body principal stresses, solving of pile soil contact surface normal stress changes through a pile shaft and stress principal direction angle conversion; calculation of pile body point side friction resistance changes according to normal stress changes, integral obtaining of total bearing capacity losses along the pile length and calculation of frictional pile foundation bearing capacity loss factors. The calculation method has high operability, simple calculation and wide application prospects.

The invention belongs to the technical field of irregular refractory material overturning, and particularly relates to a device and method for achieving irregular material overturning by changing the structure of an overturning machine. Round wheels are arranged at the two ends of the turnover machine, an elliptical wheel is additionally installed on one side of the turnover machine to control the occupied length of the hanging belt, and a groove is machined in the elliptical wheel and connected with the rotating shaft through a key. When an irregular material is turned over, the hanging belt at the small end of the material is placed in the elliptical wheel, and meanwhile, the long shaft of the elliptical wheel is rotated horizontally to supplement the length of the hanging belt, so that the phenomenon that the gravity center of the material shifts due to the change of the length of the hanging belts on the two sides during turning over is avoided. When regular materials are turned over, the round wheels on the two sides can be used, the turnover machine can be used for multiple purposes, and the use efficiency is improved. By changing the structure of an existing turnover machine, the gravity center of an irregular material does not shift in the turnover process, and the technical problem that the gravity center of the irregular material shifts in the turnover process, and consequently the material is damaged is solved.

The application provides a new energy station short-circuit capacity calculation method and device, wherein the new energy station short-circuit capacity calculation method fully considers three main short-circuit capacity influencing factors of power grid parameters, new energy station output and fault ride-through control characteristics, accurately calculates terminal voltage and short-circuit current, and thus obtains the short-circuit capacity of the new energy station, which is used for guiding power system planning operation, equipment selection, protection setting, power quality evaluation and the like. The application has clear steps, accurate calculation and high engineering application value.

This invention provides a multi-source fusion-based system and method for calculating peak fatigue levels in runners of up to 10,000 users. The system includes a data acquisition module, a data preprocessing and fusion module, a peak fatigue calculation module, a safety early warning and coordinated intervention module, a data security and privacy protection module, and a backup data acquisition unit. The core functionality involves collecting five-dimensional, multi-source, safety-related data on runners' physiological, exercise, environmental, individual, and subjective factors through the data acquisition module. A simplified version of non-invasive electromyography (EMG) signals is introduced to identify latent muscle fatigue. A dual-layer fusion architecture of "edge + cloud" is adopted, combined with a federated learning model, to achieve deep fusion of multi-source data while protecting runner privacy, constructing a personalized dynamic fatigue threshold model. The system calculates peak fatigue levels based on a real-time safety-oriented fatigue index, implements closed-loop intervention through a four-level graded early warning mechanism linking multiple terminals, and ensures data security through three-link redundant transmission, data anonymization and encryption. The backup acquisition unit ensures full coverage of data from up to 10,000 users.