11results about How to "Protection strength" patented technology

The invention discloses a human face sensitive data protection method based on an elastic anti-interference privacy protection mechanism, belongs to the field of information processing, and provides a dynamic self-adaptive sampling strategy based on information entropy in a data preprocessing stage, and the sampling rate is adjusted according to the distribution characteristics of a human face data set and the weight of sensitive information. And the model performance is maximized on the premise of ensuring user privacy. In order to obtain a better privacy protection effect, an entropy adjustment differential privacy mechanism is designed, and Gaussian noise of different degrees is adaptively added according to an information entropy value of face data after a face data set is dynamically and adaptively sampled, so that refined privacy protection of face sensitive data under differential privacy constraint is realized. In a model training stage, an elastic anti-interference training method is provided, diversified adversarial samples are dynamically generated in different stages of model training, and the over-fitting risk of the model is reduced while the robustness of the model to various types of adversarial attacks is enhanced.

The present invention provides a method for preparing a negative pressure film-covering frozen sand mold. The method includes the following steps: directly obtaining a mold cavity of a sand mold through numerically controlled machining of a frozen sand blank; covering a surface, brushed with a thermal insulation coating, of the mold cavity of the sand mold with a softened thin film, and covering an outer surface of the sand mold with a back film to seal a sand box; fix the frozen sand mold in an air extraction sand box with a vacuum chamber, and extracting air through a vacuum pump, so that the thin film tightly adheres to the sand mold through vacuum suction force; and closing the box to obtain an integral sand mold, and pouring a casting at room temperature or low temperature under negative pressure. The method is environment-friendly, and the prepared frozen sand mold has high strength and is convenient for sand cleaning. During pouring, little vapor is generated, and metal solidifies rapidly, so a casting with good internal quality, high dimensional accuracy, and excellent surface quality can be produced.

The utility model relates to the technical field of glass wool manufacturing, and discloses a glass wool stacking device which comprises a rack, a horizontal driving mechanism, a lifting mechanism, a pushing mechanism and a supporting mechanism, a first conveying mechanism is arranged on the rack, and the supporting mechanism is movably connected with the first conveying mechanism; the lifting mechanism gradually descends according to the stacking height of the glass wool. When the supporting mechanism protrudes out of the other side of the rack, the pushing mechanism pushes the glass wool located on the first conveying mechanism to the supporting mechanism, and when the horizontal driving mechanism drives the supporting mechanism to retract, the pushing mechanism is used for preventing the glass wool from returning to the first conveying mechanism and enabling the glass wool to fall on the lifting mechanism. According to the glass wool stacking device, friction between glass wool can be avoided during stacking, the original strength of the glass wool is better protected, the adverse effect of dust generated during original manual stacking on the working environment is avoided, the investment of dust collection facilities for improving the environment is reduced, and the working labor intensity of production staff is greatly relieved.

The application discloses an indoor distribution optical cable easy to be pulled out laterally for construction, which comprises an outer sheath, two GFRP strips and a plurality of loose tube units; the inner cavity of the outer sheath is only arranged with the plurality of loose tube units, each of which is arranged in the inner cavity of the outer sheath in a straight manner, and each loose tube unit comprises a loose tube and one or more optical fibers; on the cross section of the indoor distribution optical cable, the two GFRP strips have outer common tangent l1 and outer common tangent l2, the inner edges of the outer sheath are respectively divided into two areas by the outer common tangent l1 and l2, and the outer edge of any one of the loose tube units does not exceed the outer common tangent when the outer edges of all the loose tubes enter one area. The application is easy to complete the opening of the skylight construction, so that the loose tube unit is easy to be pulled out, and the optical fiber is not easy to be damaged when the outer sheath is cut.

The invention relates to the technical field of constructional engineering, and particularly discloses a construction technology for recasting an anticorrosive coating on the surface of a domestic garbage storage pit steel structure in a coastal area, the anticorrosive coating and application, and the construction technology specifically comprises the following steps that S1, soot blowing and rust removing operation is conducted on the surface of the steel structure till metallic luster is exposed; s2, filling the sunken part with low surface treatment epoxy primer; s3, the flatness of the polished and filled position and the flatness of the unfilled position are kept; s4, low surface treatment epoxy primer is sprayed on the surface of the steel structure to form an anti-corrosion bottom layer; s5, polyurethane finish paint is sprayed on the surface of the anti-corrosion bottom layer to form an anti-corrosion surface layer; and S6, fireproof paint is sprayed on the surface of the anti-corrosion surface layer to form a fireproof layer, so that surface treatment of the steel structure and construction of all the coatings are completed. According to the scheme, corrosion of external corrosive media to the steel structure can be effectively prevented, the service life of the steel structure is prolonged, the method can be applied to steel structure anti-corrosion layer recasting or factory construction in coastal areas, and the problems that an existing steel structure coating is prone to corrosion and short in service life are solved.

The present invention discloses a pre-reinforced pile wall support structure and method for excavated slopes, comprising a plurality of retaining piles arranged on the slope, a plurality of jet grouting piles arranged between two adjacent retaining piles along the soil arch line between the piles, wherein the jet grouting piles facing the rear side of the retaining piles are rear-pile jet grouting piles, and the remaining jet grouting piles are inter-pile jet grouting piles, wherein the rear-pile jet grouting piles have a vertical axis, and further comprising a retaining wall between the two retaining piles, wherein the front side of the retaining wall is a face slope, and the rear side of the retaining wall is adjacent to each inter-pile jet grouting pile. The purpose of the present invention is to provide a pre-reinforced pile wall support structure and method for excavated slopes, so as to solve the problem in the prior art that the retaining wall easily leads to partial failure of the pile wall support system, and to achieve the purpose of reducing the disturbance of the soil between the piles caused by the excavation in front of the piles and protecting the strength of the soil between the piles.

The utility model provides a pole piece, which is used in the technical field of batteries, and particularly relates to a battery cell, which comprises a first pole piece, a second pole piece and a diaphragm, and the first pole piece, the diaphragm and the second pole piece are sequentially stacked and wound into the battery cell; the first surface of the first pole piece comprises a first pasting area and a first empty foil area which are adjacent to each other in a first direction, and the second surface of the first pole piece comprises a second pasting area and a second empty foil area which are adjacent to each other in the first direction; the part, overlapped with the first pasting area in the third direction, of the second empty foil area is a single-sided empty foil area; first ending glue is adhered to the adjoining position of the first pasting area and the first empty foil area, second ending glue is adhered to the adjoining position of the second pasting area and the single-face empty foil area, and third ending glue at least covering a first arc area on the single-face empty foil area is further arranged on the single-face empty foil area. According to the pole piece, the strength of the pole piece on the outer side of the battery cell is protected by arranging the third ending glue in the single-side empty foil area, and abnormal capacity attenuation caused by pole piece breakage due to huge change of the size of the battery cell is prevented.

The utility model relates to the technical field of road structures, in particular to a road structure capable of preventing arch expansion deformation, which comprises a roadbed, an anti-permeation layer, a water-stable base layer and a pavement layer, the anti-permeation layer is paved on the roadbed, the water-stable base layer is paved on the anti-permeation layer, the pavement layer is paved on the water-stable base layer, and the water-stable base layer is paved on the pavement layer. The anti-permeation layer is used for preventing sulfate in the roadbed from permeating into the water-stable base layer. According to the road structure capable of preventing arch expansion deformation provided by the utility model, the impermeable layer is arranged between the roadbed and the water-stable base layer, and the impermeable layer can block the capillary action of sulfate in the salinized soil roadbed, prevent the sulfate in the salinized soil roadbed from permeating into the water-stable base layer and prevent the salt expansion phenomenon of the water-stable base layer; the strength and the stability of the water-stable base layer are protected, the arch expansion phenomenon of the pavement layer is prevented, and the defect that transverse arch expansion cracking of the pavement is prone to occurring in an existing road structure in the salinized soil area is overcome.

The utility model relates to the technical field of curtain wall building construction, and particularly discloses an intelligent shading curtain wall shutter window shade which comprises an automatic controller, the automatic controller comprises a shell, a photosensitive receptor is embedded in one side of the shell, a microcontroller is arranged on one side of the photosensitive receptor, a motor is arranged on one side, away from the photosensitive receptor, of the microcontroller, and the motor is connected with the automatic controller. The microcontroller is electrically connected with the photosensitive receptor and the motor, a take-up device is arranged on one side of the motor and sleeved with a pull rope, a shutter window shade is arranged below the automatic controller and comprises a frame, a rail is arranged on the frame, a plurality of shutters in sliding fit with the rail are arranged in the rail, the pull rope is arranged in the shutters in a sleeved mode, and the shutter window shade is arranged in the frame. The lowest point of the pull rope is tightly attached to the lower surface of the lowest shutter; according to the utility model, the automatic controller taking the photosensitive receptor as the core is adopted to monitor the illumination intensity of the external environment, and the shutter window shade is opened or closed according to the illumination intensity, so that the effect of adjusting the indoor illumination intensity is achieved.

The utility model discloses a pavement quick drainage structure, which relates to the technical field of pavement drainage and comprises a pavement notch groove and channel steel fixed in the pavement notch groove, the channel steel is positioned in an asphalt layer of a pavement and is perpendicular to the length direction of the pavement, one end of the channel steel extends into a pavement drainage facility, and the other end of the channel steel extends into the pavement drainage facility. A channel steel notch groove is formed in the side, close to the inner wall of the road surface notch groove, of the side wall of the channel steel, and the channel steel notch groove is perpendicular to the length direction of the channel steel. The utility model can quickly drain the pavement accumulated water, protect the pavement strength at the grooving position, prevent the pavement accumulated water from permeating into the roadbed to damage the overall strength of the road, and is simpler and more convenient to maintain and clean.

The invention provides a bio-based tencel splitting agent and a preparation method and application thereof, and the bio-based tencel splitting agent comprises an acid agent, a bio-enzyme, a bio-based surfactant, an antacid, a stabilizer and water. The bio-based tencel splitting agent can realize splitting treatment of tencel fabric by applying a one-step one-bath method, and has the advantages of uniform splitting effect, mild treatment condition, less sewage discharge, short process time and low temperature, not only can greatly reduce energy consumption, but also can achieve the optimal splitting effect on the premise of protecting fiber strength, and has good application prospects. The tencel fabric subjected to splitting treatment is easier to dye, and has the characteristics of being green, environment-friendly, high in safety and the like.