7results about How to "Avoid poisoning risk" patented technology

The invention provides a quantitative blending device for pesticide preparation production, and relates to the technical field of pesticide blending, the quantitative blending device comprises a fixed outer cylinder, the bottom of the inner side of the fixed outer cylinder is provided with a driving motor, the output end of the driving motor is provided with a gear, and the inner side of the fixed outer cylinder is provided with two guide rails; a storage cover is mounted on the outer side of the fixed outer cylinder; a driving cylinder is mounted at the top of the outer side of the storage cover, the output end of the driving cylinder penetrates through the outer side of the storage cover, a servo motor is mounted on one side of the storage cover, and two driving wheels are mounted on the inner side of the storage cover; and a detachable barrel cover is mounted at the top of the fixed outer barrel in a closed manner. Toxic peculiar smell generated in the fixed outer barrel in the pesticide feeding and mixing process is effectively absorbed through the air suction ring, the poisoning risk caused by pesticide smell leakage to workers is avoided, and the problems that when the blending device is started in the subsequent stage, the gas injection risk is caused by internal high pressure, and toxic gas escapes are solved.

The invention discloses a feline calicivirus VP1 recombinant protein and application thereof. The amino acid sequence of the feline calicivirus VP1 recombinant protein is shown as SEQ ID No.1 in a sequence table. The neutralizing titers of the feline calicivirus positive serum prepared by adopting the recombinant protein as an antigen and different gene groups are all up to 1: 4096 times or above, the requirements of ELISA and IFA tests can be met, the feline calicivirus positive serum obtained after immunization of the prepared recombinant protein is good in purity, free of bacteria, free of mycoplasma and exogenous virus pollution, high in specificity and good in clinical application prospect. And the strain can react with strains of different evolution groups well, and has good broad spectrum. Positive serum prepared from the recombinant protein prepared by the invention can be used for quality control of different gene group cat calicivirus vaccines, such as specificity test, exogenous virus test, diagnostic detection and the like.

This utility model relates to the field of toxic gas sampling technology, and is an online closed sampling device for toxic gases. It includes a transparent box, a box support, an air inlet assembly, and protective gloves. The box support is located at the bottom of the transparent box. The air inlet assembly includes a first straight pipe section, a second straight pipe section, an air inlet hose, and a gas connection hose. An air inlet hole is provided on the top wall of the transparent box. The first straight pipe section extends from the outside of the transparent box through the air inlet hole into the interior of the transparent box. A hand valve is fixedly installed on the second straight pipe section. The front wall of the transparent box is designed with symmetrical double doors, including a left door and a right door. The left and right doors each have symmetrical left and right hand holes, and protective gloves are fixedly installed in both the left and right hand holes to reach into the transparent box. This utility model has a reasonable and compact structure, is easy to use, and improves both the safety and efficiency of online toxic gas sampling.

The present invention discloses an oral film with a customizable drug release curve and a preparation method thereof, belonging to the technical field of pharmaceutical preparations. The preparation method of the oral film comprises: (1) preparing a double-layer drug film including a barrier layer and a drug sustained-release layer, wherein the barrier layer is a metal film capable of reacting with an acidic solution, the drug sustained-release layer comprises a water-soluble small molecule drug and a sustained-release polymer, and the drug sustained-release layer is edge-sealed and fixed on the barrier layer; (2) folding the double-layer drug film to obtain an oral film with an origami structure, realizing the customization of the drug release curve of the oral film, and preparing the oral film with a customizable drug release curve. The oral film can customize the drug release curve, improve patient compliance, and reduce health risks and medical costs.

The invention relates to the technical field of neutron sensitivity calibration of out-of-pile detectors, and provides a cadmium sleeve rapid dismounting and mounting device and method for neutron sensitivity calibration of an out-of-pile detector. The hanging basket displacement support is connected with a longitudinal displacement mechanism used for driving the hanging basket displacement support to move in the longitudinal direction. A second guide rail is arranged at the bottom of the hanging basket displacement support, and when the hanging basket displacement support is located in the containing opening, the second guide rail and the first guide rail jointly form a transverse guide rail. The cadmium-free sleeve hanging basket is used for loading the out-of-pile detector; the hanging basket with the cadmium sleeve is used for loading the out-of-pile detector, and the hanging basket with the cadmium sleeve and the hanging basket without the cadmium sleeve are arranged on the transverse guide rail in a sliding manner; and the driving rod is used for driving the cadmium sleeve hanging basket and the cadmium-free sleeve hanging basket to move along the transverse direction. According to the method, the workload in the calibration process is reduced, the calibration work efficiency is improved, and the poisoning risk caused by long-term direct operation of the cadmium sleeve is avoided.

The present application relates to pet trace element instant beverage technical field, specifically to double-bin isolation instant pet trace element beverage and its preparation method, the pet trace element instant beverage is composed of double-bin packaging, high-activity pet trace element instant powder and buffer pure base fluid; The double-bin packaging includes upper powder bin and lower liquid bin, the easy-to-tear aluminum foil diaphragm is arranged between the upper powder bin and the lower liquid bin. The present application realizes the long-term stable storage of trace elements through the synergistic design of double-bin isolation structure, special instant formula and convenient use method, without refrigeration, the shelf life of 18 months can be achieved, the activity retention rate is greater than or equal to 95%; Using special instant emulsifying system, 3-5 seconds of instantaneous instant can be realized under the condition of low shear force hand shaking, there is no stratification, no caking, no wall hanging, and the absorption efficiency is improved by more than 60% compared with existing products.

The present invention belongs to the technical field of wastewater treatment, and specifically relates to a method for recovering and treating elemental sulfur based on hydrogen sulfide waste gas absorption liquid. The method comprises the following steps: (1) adding sodium sulfate to the hydrogen sulfide waste gas absorption liquid to obtain a sulfur-containing liquid; (2) injecting the sulfur-containing liquid into a water storage tank, and then adding a sodium sulfate solution to the upper layer to form a liquid seal layer; (3) uniformly injecting an acid solution into the water storage tank, controlling the pH value of the feed liquid in the water storage tank to be 1.5-3, and standing for reaction; (4) after the reaction is completed, extracting the supernatant, and then injecting the sulfur-containing liquid into the water storage tank again, repeating steps (2) and (3), until the hydrogen sulfide waste gas absorption liquid is treated, and collecting the generated elemental sulfur. By adopting a point-in-point micro-acid addition for static reaction, negative valence sulfur is effectively converted into elemental sulfur. This process not only significantly reduces the content of sulfate ions in the wastewater after the reaction, so that it can be directly discharged with water treatment, but also realizes efficient resource utilization of waste.