13results about How to "Stable recovery" patented technology

The invention relates to the technical field of mineral flotation, and discloses a method for compounding a lithium oxide collecting agent in a low-temperature environment, and the lithium collecting agent comprises the following compounding raw materials in percentage by mass: 15-25% of palmitic acid soap; 10%-20% of sulfonated petroleum; 5% to 10% of iso-tridecanol polyoxyethylene ether; 8%-15% of fatty alcohol-polyoxyethylene ether; 3%-8% of polyoxyethylene ether sodium sulfonate; 5%-10% of dipropylene glycol monomethyl ether; 8%-15% of sodium carbonate; 2%-5% of sodium hydroxide; 0.5%-2.0% of sodium fluoride; 0.5%-2.0% of aluminum sulfate; 1%-4% of tannic acid; a synergistic surfactant system is formed by constructing palmitic soap and sulfonated petroleum as a main collecting frame and compounding isomeric alcohol ether, fatty alcohol-polyoxyethylene ether and polyoxyethylene ether sodium sulfonate, dipropylene glycol monomethyl ether is introduced as a low-temperature mutual solvent, and the low-temperature mutual solvent is used for collecting the high-temperature-resistant oil-displacing agent for the oil-displacing oil-displacing agent for the oil-displacing oil-displacing oil-displacing oil-displacing oil-displacing oil-displacing oil-displacing oil. The freezing point and viscosity of a collecting agent system are greatly reduced, the liquidity, uniformity and dispersion stability of the collecting agent are still kept when the collecting agent is used in the low-temperature environment of 0-15 DEG C, and the failure problem caused by low-temperature solidification or layering is fundamentally avoided.

The present application belongs to the technical field of analytical chemistry, plastic detection and regenerated polyester quality control, and particularly relates to a microcoulometric method and system for determining trace PVC content in PET microplastics. After water washing and drying of the PET sample, the method uses a selective solvent mainly composed of tetrahydrofuran to dissolve PVC for a short time and filter and fix the volume, burns the chlorine-containing sample solution under the condition of high temperature, oxygen enrichment and copper-free chlorine-trapping filler, converts chlorine into hydrogen chloride and performs microcoulometric titration, and converts the PVC content according to the electrolytic electric quantity, which has the advantages of rapidness, accuracy, resistance to inorganic chlorine interference and suitability for trace detection.

The invention discloses a particle sorting micro-fluidic chip integrated with a piezoelectric actuator and a use method of the particle sorting micro-fluidic chip, and relates to the technical field of micro-fluidic sorting. The device comprises a particle inlet, a jet liquid inlet, two sorting outlets, a sorting area and a piezoelectric actuator. The jet flow cavity is in fluid communication with the sorting area, and a jet flow outlet of the jet flow cavity is located at the highest gravity position, so that gas in the jet flow cavity can be discharged through the jet flow outlet under the action of gravity. According to the invention, the chip is vertically or obliquely placed, so that the jet flow outlet is located at a functional position which is beneficial to natural gathering and discharging of gas under the action of gravity, and bubbles in the cavity are naturally discharged by utilizing the gravity. The jet flow actuating efficiency is improved, the sorting process has higher tolerance to the initial transverse position, the arrival time sequence and the size fluctuation of the particles, and stable and high-purity particle sorting can be achieved without depending on the high-precision pre-alignment condition.

The application provides a partition method, device and equipment for power system outage recovery and a storage medium. The method comprises the following steps: determining a guarantee area based on the number and capacity of black-start power sources and the starting power of to-be-recovered conventional units and the node load power; including nodes and branches based on the rated power of the to-be-recovered conventional units in the guarantee area to obtain a feasible area; and determining the partition attribution of a new energy station based on the support power provided by the new energy station and the new energy consumption capacity of each partition in the feasible area to obtain an expanded area. The method can improve the execution efficiency of the power system recovery scheme.

This invention discloses a lensless fiber bundle phase imaging method. The method includes: acquiring a single-exposure image of a sample through an optical fiber under multi-wavelength illumination; obtaining light intensity data for reconstruction by multi-channel separation and correction of the image; reconstructing the diffraction image of the sample based on the obtained light intensity data by removing the fiber bundle structure; establishing a lensless fiber bundle imaging model and correlating the diffraction image with the complex amplitude distribution of the sample; constructing an objective function for optimization and solving to obtain the amplitude image and phase image of the sample. This invention eliminates the need for lenses in the fiber bundle, offering advantages such as simple structure and suitability for miniaturized systems, and enables stable quantitative phase imaging under single exposure.

This invention relates to the field of ore flotation technology, specifically a low-consumption, high-efficiency flotation reagent for high-calcium, fine-muddy fluorite ore, its application, and a flotation method. The flotation reagent includes a modifier, a compound depressant, a compound collector, and a frother. The modifier includes sodium carbonate; the compound depressant includes water glass, carboxymethyl starch, sodium hexametaphosphate, and sodium lignosulfonate; the compound collector includes oleic acid, oxidized paraffin soap, sodium dodecyl sulfonate, and benzoyl hydroxamic acid; and the frother includes pine oil. Through the complementary functions of the compound depressant and the compound collector, highly efficient selective inhibition of high-calcium gangue and highly selective collection of fluorite are achieved, effectively dispersing fine mud, reducing froth entrainment, and ultimately obtaining a fluorite concentrate with a stable grade ≥97.0%, meeting the quality requirements of metallurgical and acid-grade fluorite products. This reduces the negative impact of fine nuclei on flotation, stabilizes the fluorite recovery rate, and increases the fluorite recovery rate by 3-6%, achieving dual stability in grade and recovery rate.

The invention discloses a crack global optimization reconstruction method and system for structure detection. The method comprises the following steps: preprocessing a structure surface image, detecting cracks, and analyzing a connected region to obtain a discrete crack fragment set; extracting geometrical characteristics of each fragment, and calculating a fragment pair space adjacent distance to construct a candidate connection set and a crack connection graph; constructing a feature vector based on the connection probability features, and combining a likelihood model and a structure prior model to form a probability graph model; and after the problem is converted into an energy minimization problem, performing iterative optimization through a maximum posterior probability inference algorithm dynamically updated by a structural state, screening an optimal connection relation set, and combining crack segments to realize global optimization reconstruction. According to the invention, the accuracy and continuity of crack detection in a complex scene can be improved.

This invention relates to a method for recovering and clustering optical stripes based on restricted region growing, belonging to the field of computer vision measurement technology. The method includes the following steps: Step 1: Obtaining stripe projection images of the object under test after segmentation of the region of interest (ROI) from two camera viewpoints; Step 2: Obtaining binary stripe images; Step 3: Extracting the stripe center lines from the binary stripe images through connected component analysis to obtain the seed point coordinates of each stripe; Step 4: Obtaining stripe point coordinate data; Step 5: Calculating the centroid coordinates of the stripes based on the stripe point coordinate data recovered in Step 4, and numbering the stripes in the left and right views; Step 6: Comparing the number of stripes in the left and right views. If they do not match, the radius of the region growing is increased, and Steps 4 and 5 are repeated until the number of stripes in the left and right views matches. This invention effectively addresses the problems of noise, breakage, and deformation in optical stripe images, avoiding the problem of mismatched multi-line laser stripes.

The application discloses a kind of microbial standard substance preparation methods of characterizing hydrogen peroxide sterilization performance, belong to biological detection technical field, comprising the following steps: S1, raw material selection: including indicating microorganism, carrier, modified chitosan, modified mesoporous nanometer silicon dioxide and tannic acid;S2, preparation composite protective solution: modified chitosan is dissolved in phosphate buffer solution, add tannic acid solution;Again add modified mesoporous nanometer silicon dioxide;S3, preparation spore protection suspension;S4, the inoculation and drying of carrier;S5, packaging and storage;The application solves the problem that microbial standard substance quality value is not accurate, unstable, unreliable in the existing hydrogen peroxide sterilization performance evaluation.

This invention discloses a method for detecting bromofenac in ginger, belonging to the field of pesticide residue detection technology. The method includes: homogenizing and extracting ginger samples using an acetonitrile solution containing a hydrophobic deep eutectic solvent; adding a salting-out agent to obtain a supernatant through separation; purifying the supernatant using a boric acid-functionalized magnetic carbon nanotube metal-organic framework composite material as an adsorbent via a temperature-switching adsorption process, first removing phenolic interference through thermal adsorption, then removing lipids through freeze precipitation; and finally detecting the supernatant using liquid chromatography-tandem mass spectrometry. This invention effectively solves the problem of severe matrix interference from phenols and lipids in ginger, and features high recovery rate, low matrix effect, high sensitivity, and simple operation.

This invention discloses a multi-voltage power supply management and control method for mine environmental monitoring, relating to the field of mine power management technology. The method uses a PLC controller to synchronously collect data from the main power supply, backup power supply, auxiliary power supply, transformer, battery management system, and mine environmental parameters. These environmental parameters include at least methane concentration, smoke concentration, temperature, humidity, water level, and ventilation status. Based on the collected data, an environmental risk index and a power demand index are constructed, and the operating status is classified into normal, warning, emergency, and critical levels. This allows for optimal switching between the main, backup, and auxiliary power supply paths. This method enables coordinated control of mine environmental risks and power management, reduces switching impact, ensures continuous online operation of mine monitoring, communication, alarm, and interlocking links, and improves the safety and continuity of mine power supply.

The utility model relates to the field of environment detection, and discloses a multifunctional sampling head suitable for environment detection, which comprises a soil detection frame, a driving motor is fixedly mounted at the top of the soil detection frame, a driving gear is rotatably mounted on an output shaft of the driving motor, and a driving cylinder is fixedly mounted on the inner wall of the soil detection frame. A piston rod on the driving air cylinder is fixedly connected with a soil sampling head used for detecting soil, an annular plate is rotatably installed at the end of the soil detection frame, the outer wall of the annular plate is sleeved with an annular gear, and after soil sampling is completed, in the retraction process of the sampling head, a scraping plate can automatically scrape residual soil on the surface of the sampling head; and the complexity of manual cleaning and the risk of cross contamination are avoided. In addition, the driving motor drives the annular plate and the mud throwing plate to rotate, so that mud on the side edge of the scraping plate can be further removed, the cleanliness of the sampling head is ensured, and a guarantee is provided for next accurate sampling.

The utility model discloses a medical technical field's a kind of for postoperative limb fixator, increase air pump and fixing sleeve, can be bound constraint to limb by fixing sleeve, and by air pump inflation, make limb be oppressed and cannot bend, effectively limit the limb activity of patient, fixing sleeve inflates, to avoid limb bending and affect surgical site healing;Again by the pulling of positioning hook and limiting band, limit limb left and right shift, ensure that limb position remains fixed, more conducive to limb wound recovers as soon as possible, the extension wrinkle of the device can be stretched and extended or superimposed and shortened, and the whole fixing sleeve itself is pasted into a reel by pasting sheet and adjusting patch, can be conveniently adjusted thick and thin, to adapt to the wearing needs of different body type patients.