34results about How to "Health damage" patented technology

A method and apparatus for applying gum to shoe pad features that the sheet used to make shoe pad is passed through a gap between a gum applying roller and a pressing roller for applying the gum to it in the dots mode, resulting high air permeability.

The invention discloses a sample preparation method for eliminating a rubber membrane penetration effect of a strong-weathered rock. The principle is that cured liquid latex is used as filler, so thatan uneven test sample surface becomes smooth, and the rubber membrane penetration effect of the strong-weathered rock is eliminated. Preparation steps of a test sample comprise the steps of cutting the sample, filling pits, smoothening the surface, molding the test sample and filling the sample. According to the technical scheme provided by the invention, adverse effects of the rubber membrane penetration effect of the strong-weathered rock can be effectively eliminated and a tested three-axis shear test result is real and reliable and has high precision. The sample preparation method has thecharacteristics of toxin-free and harmless testing materials, low construction price, feasible method, convenience for operation, short testing period and the like; and the problem that a rubber membrane is broken by protruding quartz grains on the surface of the test sample under high pressure so that the test fails also can be avoided by the technical scheme.

The invention discloses a non-toxic acarid-killing and sterilizing combined cleaning agent for ventilation systems of air conditioners, which comprises limonene (C10H16), d-phenothrin (C23H26O3), tetramethrin (C19H25NO4) and polyhexamethyleneguanidine (C7H14O2N3Cl)n and can also be added with an emulsifier, aids and a stabilizer. The limonene and polyhexamethyleneguanidine can decompose surface substances of acarid and mould bodies to block the respiratory tract of the acarids and bacteria and kill the acarids and moulds. The concerted action of the emulsifier, aids and stabilizer improves the adhesiveness and permeability of the limonene and polyhexamethyleneguanidine on the surface of the acarid and mould bodies, thereby strengthening the knock-down and killing effects on the acarids and moulds. The lethal doses (LD)50 of the components adopted by the invention are all greater than 5,000 milligrams per kilogram of body weight. The composition is harmless and nontoxic to human bodies.

The invention discloses a rat repelling agent. The agent comprises, by weight, 1-99.9% of litsea cubeba oil, 0.01-1% of camphorated oil and the balance water or 1-10% of emulsifier. Compared with the prior art, the agent consists of natural components. The agent is good in volatility, nontoxic, free from residue and incapable of affecting the environment and hurting human health. The agent is mainly used for repelling a rat rather than killing the rat.

The invention discloses an X-ray contraband package detection method and device based on feature map re-weighting. By constructing an X-ray contraband training set, an image feature map, a region of interest feature map and a class attention feature map are sequentially obtained, and the The class attention feature map re-weights the feature map of the region of interest, obtains a single-dimensional feature vector, determines the predicted categories of various types of contraband, and adjusts the feature extraction network, meta-feature extractor and classification regression used in the next training process. network, return to execute the process of sequentially acquiring the image feature map, the region of interest feature map, and the class attention feature map, and re-input the X-ray contraband training set into the adjusted feature extraction network for iterative training until the number of training times is greater than or equal to the preset The number of iterations is determined, the contraband detector is determined, and the package to be detected is input into the contraband detector to obtain the contraband position and contraband category output by the contraband detector, so as to save manpower and material resources and reduce the detection cost.

The invention relates to a water sealing type cover plate device in a coal bearing device of a coal gas producer. The water sealing type cover plate device comprises a water sealing seat, a water sealing cover, a suspension arm, a suspension arm shaft and an uncovering seat, wherein a base plate of the water sealing seat is fixed on the outer wall of a coal bearing hopper, and a circular opening chamber is formed between the circular side wall of the water sealing seat and the outer wall of the coal bearing hopper and is filled with water; the water sealing cover is cylindrical with an openedend and a sealed end, and the radial size of the water sealing cover is less than that of the water sealing seat; and the uncovering seat is welded on the side wall of the water sealing seat, one endof the suspension arm is articulated on the uncovering seat through a suspension arm shaft, the water sealing cover is welded on the suspension arm, when the cover plate device is closed, the edge ofthe opened end of the water sealing cover is downwards immersed in water of the water sealing seat. The water sealing type cover plate device has ingenious and reasonable structure, has good sealing performance and can absorb harmful ingredients in coal gas by adopting water sealing type; and the water sealing type cover plate device can prevent the coal gas in the coal bearing hopper from leaking, reduces environmental pollution and ensures operating personnel not to be damaged.

A method and apparatus for applying gum to shoe pad features that the sheet used to make shoe pad is passed through a gap between a gum applying roller and a pressing roller for applying the gum to itin the dots mode, resulting high air permeability.