6results about How to "Achieving Quantitative Control" patented technology

This invention relates to the field of physical similarity simulation technology, specifically providing a physical simulation method for the formation process of lunar lava tube structures. The method involves preparing a simulated melt that meets the rheological and thermodynamic similarity criteria of basaltic lava by mixing thermoplastic materials with condensation additives. The low-gravity effect, high-vacuum environment, and radiative cooling conditions under lunar conditions are reproduced using inclined flow channels and thermal vacuum cavities. By precisely matching dimensionless parameters such as Peckley number, dimensional temperature, and Rayleigh number, the injection rate, flow channel inclination angle, and target ambient temperature of the simulated melt are determined. Under these conditions, controlled melt flow and surface solidification crust formation are simulated, ultimately forming a cavity structure model. This allows for the physical study of the formation process of lunar lava tube structures. This invention can accurately reproduce the dynamic crust formation and cavity formation process of lava flow under extreme lunar conditions, providing a quantitative experimental data basis for the study of the formation mechanism of lunar lava tubes and their engineering applications.

The application discloses a feeding device, which comprises a storage assembly including an inlet and an outlet, and is used for storing materials; a weight detection assembly is arranged on the storage assembly and is close to the inlet, and is used for detecting the weight of the storage assembly and the materials; a material level detection assembly is arranged on the storage assembly and is close to the outlet, and is used for detecting the height of the materials; a temperature detection assembly is arranged on the storage assembly and is arranged between the weight detection assembly and the material level detection assembly, and is used for detecting the temperature of the storage assembly and the materials; a feeding assembly is connected to the outlet, and is used for obtaining the materials from the outlet and conveying the materials; and a control assembly is coupled to the weight detection assembly, the material level detection assembly, the temperature detection assembly and the feeding assembly, and is used for alarming when the weight is less than or equal to a first preset value, or when the temperature is greater than or equal to a second preset value, or when the height of the materials is lower than a preset height. The feeding device reduces the possibility of faults of the feeding device by detecting the weight, the material level and the temperature.

This invention discloses a method for unsteady-state ultrasonic standing wave-assisted control of fusion welding. It utilizes dual ultrasonic transducers to perform dual-wave interference, forming an ultrasonic standing wave. This ultrasonic standing wave is introduced into the fusion welding process, and its action on the welding area allows for real-time control of the microstructure and properties of different parts of the weld joint. This forms a unsteady-state ultrasonic standing wave with controlled directional movement of the wave packet nodes, which is then used to regulate the microstructure and properties of the weld joint. This invention enables control over the direction and speed of movement of the unsteady-state ultrasonic standing wave wave packet nodes, allowing for regional control of the microstructure and properties of different parts of the weld joint, resulting in a more uniform joint composition and microstructure. It can solve problems such as undercut, burn-through, high residual stress, severe deformation, and columnar crystals that reduce joint performance during the welding of thin materials or fine wires, refining grains and improving joint performance. It can achieve controllable connections from the centimeter scale to the micrometer scale.

This utility model discloses a secondary coagulation and sedimentation system for municipal solid waste leachate, comprising: a first reaction tank with a built-in first stirring device; a second reaction tank with its inlet connected to the outlet of the first reaction tank and a built-in second stirring device, the second stirring device having the same or different stirring speed as the first stirring device; a sedimentation tank with its inlet connected to the outlet of the second reaction tank and its outlet connected to a subsequent treatment device; a dosing assembly with its outlet connected to both the first and second reaction tanks to allow the addition of different reagents; and a detection assembly including a first detection element and a second detection element, both electrically connected to the dosing assembly. The first detection element is located in the first reaction tank and is used to detect the water quality in the first reaction tank, and the second detection element is located in the second reaction tank and is used to detect the water quality in the second reaction tank. This utility model can improve the pretreatment effect of municipal solid waste leachate.

This invention discloses a method for directional grouting repair of scour-filled areas in wharf foundations, comprising: S1, conducting surveys and data collection of the area to be grouted before directional grouting; S2, designing a grouting scheme, including: S21, estimating the required grouting volume for the area to be grouted; S22, designing the grouting hole positions and spacing; S23, initially assessing the grouting influence radius under given grouting pressure and flow rate conditions, thereby guiding the hole spacing and grouting volume distribution; S24, designing an upper limit for grouting pressure, ensuring that the upper limit is less than the critical rupture pressure of the soil or less than the allowable bearing capacity of the wharf structure; S3, selecting grouting materials and proportioning them; S4, carrying out grouting construction, including: S41, drilling; S42, test grouting; S43, formal grouting; S5, monitoring and quality assessment. This invention enables precise filling and foundation reinforcement of scour-filled areas.

This invention discloses a photothermal-triggered reusable drug delivery microneedle patch based on phase change materials, its preparation method, and its applications, relating to the field of pharmaceutical technology. The microneedle patch comprises several microneedles, each containing a drug-loaded matrix, a therapeutic drug, and photothermal nanoparticles. The drug-loaded matrix comprises a phase change material with reversible solidification-melting properties, capable of melting under photothermal triggering conditions and reverting to solidification after the photothermal triggering conditions disappear. The melting point of the phase change material is between 38°C and 45°C. The phase change material includes higher fatty acids and polyethylene glycol derivatives, and the photothermal nanoparticles include gold nanorods, graphene oxide, and polypyrrole nanoparticles. This invention proposes a microneedle patch using near-infrared light as a trigger signal and a phase change material with reversible solidification-melting properties. Through the melting process of the same phase change material under photothermal triggering, reusable drug delivery is achieved, overcoming the technical limitations of existing microneedles that only allow for "single-use, continuous drug release."