31results about How to "Reduce physical health damage" patented technology

The invention relates to a method for displaying latent fingerprints on a fluorogold nano-cluster protected by protein, and belongs to the technical field of fingerprint identification. According to the method, bovine serum albumin is used as a reducing agent and a protective agent, a gold nano-cluster is compounded through an immersion method, and latent fingerprints on a PVDF film and an adhesive tape base are marked and displayed utilizing the near-infrared fluorescence emitting performance of the nano material. The method specifically comprises the steps that the bovine serum albumin, chloroauric acid and sodium hydroxide are used as reaction raw materials to prepare gold nano-cluster solutions; fresh fingerprint detection materials are soaked, washed and irradiated by an ultraviolet lamp, and a fluorescence imaging system is used for photographing fingerprint displaying images. According to the method, the gold nano-cluster has strong fluorescence and stability, and has strong combination ability with fingerprint residue. The method is quick in operation, reagents are safe and friendly to the environment, display efficiency, accuracy, flexibility and repeatability are ideal, and therefore the method has good application prospects in the field of fingerprint identification.

The invention relates to a microbial genome DNA (deoxyribonucleic acid) indirect extraction method for evaluating diversity of animal intestinal microflora. Before cell lysis, the method performs pretreatment on a sample and separates microbial cells from the excrement sample to avoid the problems that pollutants are difficult to remove and the DNA recovery rate is low in a purification step. According to the invention, phenol and chloroform are not used in the extraction process, thus harm to the physical health of experimenters is reduced. The OD260 / OD230 and OD260 / OD280 of the extracted intestinal microorganism DNA are approximate to standard values, and the intestinal microorganism DNA can be directly applied to molecular operation to evaluate the diversity of animal intestinal microflora.

This invention provides an aquatic dung bacteria DNA distilling kit and its method. In this invention, the dung is disposed by ethanol and TritonX-100 to increase sensitivity of the bacteria to cracking liquid. Then cell is cracked by cracking liquid with SDS, the liquid also has PVP that with absorption to PCR restrictor. Then a high concentration GuSCN, low pH environment is provided for further denaturation of protein in the solution, and the water solubility is reinforced, and the DNA can be binding on silica gel column. Finally, DNA is eluted from the column in low concentration buffer solution or water. The goal of the maximum diversities information, high quality and higher output DNA of aquatic dung bacteria community can be reached by using this kit and its distilling method. The DNA got can be used to molecular ecology, system evolution and other researches.

The invention discloses a soil DNA extracting method for evaluating diversity of a microbial community of a plant root system. In the method, pretreatment is carried out on a sample before cell splitting, extracellular DNA and humic substances are removed, and the problems of difficult removal of the humic substances and low DNA recovery rate existing in a purification step are solved. In the extraction process of the method, phenol or chloroform is not used so as to reduce harm on the health of experimenters, obtain complete DNA and molecular fragments greater than 10kb and achieve high yield. OD260 / OD230 and OD260 / OD280 of the extracted soil microorganism DNA are close to standard values and can be directly applied to molecular operation so as to evaluate the diversity of the microbial community of the plant root system.

The invention discloses a double-drill bit tunnel automatic drilling machine and a method. The drilling machine comprises a crawler chassis, a control supporting box, a hydraulic control box, a centersupporting shaft, a transverse shaft, a main oil cylinder, a motor and a double-drill bit mechanism. The method comprises the following steps that 1, a hole position mark is arranged; 2, the drillingmachine carries out automatic drilling in a tunnel section by; 3, the drilling machine carries out tunnel automatic drilling; 4, percussion drill trouble shooting is carried out; and 5, steel bar drill trouble hunting is carried out. According to the double-drill bit tunnel automatic drilling machine and the method, by arranging the double-drill bit mechanism, unnecessary abrasion to a steel bardrill is reduced, and the production cost is reduced; and the working state of the drilling machine is identified through the drilling depth and the drilling speed, whether a steel bar is encounteredor not in the drilling process is detected in time, the drilling is continuously carried out by timely switching the drill bit when the steel bar is encountered, the drilling machine is prevented fromworking in an abnormal state or drilling a non-normal hole, the working reliability is high, and the drilling machine is convenient to popularize and use.

The invention discloses a soil grinding system. Two extrusion plates are symmetrically installed on the two sides in a grinding tank through spring assemblies. A motor is installed in a movable cover. The rotating shaft end of the motor is connected with a grinding assembly through a fourth electric telescopic rod. The grinding assembly comprises a transverse plate. The transverse plate is connected with a first grinding rod through a first electric telescopic rod set. First grinding rods are connected with second grinding rods through a second electric telescopic rod set. The second grinding rods are connected with third grinding rods through a third electric telescopic rod set. The lower bottom faces of third grinding rods are fixedly connected with a grinding plate. Movable baffles are installed at the two ends of the transverse plate through rotating shafts with power devices. The first grinding rods, the second grinding rods and the third grinding rods are each provided with grinding particles and brush layers alternately. The soil grinding system is simple in structure, reasonable in design and easy and convenient to operate, manpower and material resources are saved, the processing efficiency is improved, harm caused by dust to health of workers and pollution caused by the dust to the environment are reduced, practicability is high, and the soil grinding system is easy to use and popularize.

The invention relates to a processing device for an aluminum alloy wind wheel for a wall-mounted air conditioner, which includes a cross bar, a frame, a support rod and a dripper, an oil tank is installed on one side of the top of the frame, and the other The first slide rail is installed on the side, and a support rod is installed above the first slide rail, a cross bar is installed horizontally on one side of the chain rod, a transmission shaft is vertically installed on the output end of the motor, and the transmission shaft A grinding head is installed at the bottom end, a first casing is installed at the top of the frame between the fuel tank and the support rod, and fixing frames are installed at both ends of the top of the frame inside the first casing. The present invention is provided with a suction cup, an exhaust fan and a dust collection box, and the exhaust fan operates to collect the dust inside the first casing through the suction cup, reducing the occurrence of dust diffused and polluting the working environment, and at the same time reducing the dust concentration and reducing the impact on the working environment. Injury to the health of workers.

The invention discloses a method for extracting DNA from an animal tissue efficiently. The method comprises the following steps of (1) selecting an animal tissue sample, and adding a buffer solution A and proteinase K solution into the animal tissue sample to obtain a mixture; (2) putting the mixture into incubation equipment, adjusting the temperature of the incubation equipment to 55-58 DEG C, and incubating the mixture for 2-5 hours to obtain a sample suspension; (3) oscillating the sample suspension, adding sodium chloride solution, mixing the sample suspension with the sodium chloride solution uniformly, and centrifuging to obtain a supernatant; (4) adding isopropanol into the supernatant, mixing the isopropanol and the supernatant uniformly, centrifuging, and removing the supernatant to obtain a precipitate; and (5) removing the residual isopropanol in the precipitate by washing with aqueous solution of ethanol, centrifuging, and standing to remove ethanol to obtain a precipitate which is the DNA of the animal tissue. The yield of DNA extracted from the animal tissue sample by adopting the method is high, and the method is simple in step, is harmless to the human body, can not cause pollution to environment and can be used for extracting a large amount of DNAs from the animal tissue samples rapidly.

The invention discloses a red phosphorus flame-retardant reinforced nylon composite material and application thereof. The red phosphorus flame-retardant reinforced nylon composite material comprises the following components by weight: 35-55 parts of nylon resin, 3-20 parts of thermoplastic polyester, 5-20 parts of a red phosphorus flame retardant, and 10-45 parts of a reinforcing filler, wherein the thermoplastic polyester is selected from one or a combination of two of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT). A certain amount of thermoplastic polyester is added into a red phosphorus flame-retardant reinforced nylon composite material system, so that the release amount of PH3 gas in the thermal forming processing process of the composite material, especially under the condition of relatively high thermal forming processing temperature, can be effectively reduced, the harm to the body health of personnel is reduced, and the use safety of the material is improved; and the composite material is suitable for the fields of connectors, socket connectors, circuit breakers, low-voltage switches and the like in electronic and electrical appliances.

The invention is applicable to the technical field of building waterproof paint, and discloses environment-friendly fast-setting building waterproof paint which comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight, 70-80 parts of EVA (ethylene-vinyl acetate) emulsion, 10-15 parts of inorganic fillers, 0.3-0.5 part of coagulating agents, 0.5-1 part of stabilizing agents, 0.2-0.3 part of dispersing agents, 0.2-0.3 part of defoaming agents, 0.15-0.25 part of sterilizing agents and 5-15 parts of water. The component B is prepared from the following raw materials in parts by weight, 12-23 parts of setting accelerators, 2.5-8 parts of promoters and 8-14 parts of water. According to the environment-friendly fast-setting building waterproof paint, the EVA emulsion serves as a main film-forming matter which is the component A, liquid alkali-free setting accelerators and nanometer film-forming promoters form the component B of curing agents, construction can be achieved in an atomizing spray mode, the paint is short in film-forming condensation time, uniform in thickness, high in tensile strength and elongation rate, green and environmentally friendly, construction intensity is greatly reduced, and construction efficiency is improved.

The invention discloses a flange grinding method, which comprises the following steps: (1) Soaking: Soak the flange in a special solution for 20-30 minutes; (2) Rough grinding: Take out the soaked flange and dry it with a cotton cloth, Then use 100# dry sandpaper for grinding; (3) Fine grinding: wash off the grinding debris attached to the flange surface with water, then dry the flange, and use 400# dry sandpaper to polish the flange; ( 4) Fine grinding: Rinse off the grinding debris attached to the surface of the flange after fine grinding with water, then dry the flange, and use 800# water grinding paper to polish the flange. The present invention soaks the flange in the solution before grinding, so that the grinding debris produced in the subsequent grinding process is not easy to fly, improves the surrounding air quality during the grinding operation, and reduces the damage to the health of the operator. , fine grinding, fine grinding, water grinding and drying treatment and other steps are reasonably set to make the flange surface smooth and flat after grinding.

The invention discloses universal environment-friendly composite printing ink and relates to the field of printing materials. The universal environment-friendly composite printing ink is prepared from, by weight, 30 parts of polyurethane resin, 10-15 parts of ternary resin, 0.5 part of electrostatic agent, 0.5-1 part of dispersing agent, 8-28 parts of pigment powder, 10-15 parts of acetic ether, 2-3 parts of isopropanol and 0.5-1 part of polishing and slipping agent matt powder. The invention further discloses a method for preparing the composite printing ink. The composite printing ink is reasonable in formula, the trouble of replacing ink for replacement of different printing base materials is saved, and printing efficiency is improved; meanwhile, a non-toxic solvent which does not contain benzophenone is used, pollution to the environment and harm to the health of workers are small, and printing solvent residues meet the relevant national requirements for food and drug packaging; meanwhile, the preparing method is simple and efficient, the qualified rate of products is high, operability is high, and the method is suitable for large-scale mechanical production.

The invention discloses environment-friendly printing ink and a preparation method thereof. The environment-friendly printing ink is prepared from the following formula components in parts by mass: 2 to 4 parts of polyurethane resin, 1 to 2 parts of lustering and smoothening agent matt powder, 1 to 3 parts of a preservative, 12 to 14 parts of three-component resin, 3 to 5 parts of cyrtomium rhizome, 3 to 5 parts of titanium dioxide, 4 to 6 parts of nano titanium dioxide, 3 to 5 parts of anti-freezing agent, 2 to 4 parts of ethyl acetate, 1 to 2 parts of an antistatic agent, 0.8 to 1 part of pigment powder, 11 to 13 parts of an air purifying slurry agent, 2 to 4 parts of a wetting agent and 4 to 6 parts of an electrostatic agent. The environment-friendly printing ink disclosed by the invention pollutes the environments little and damages body health of workers little; printing solvent residues meet related requirements of China on food and medicine packages; meanwhile, the preparation method disclosed by the invention is simple and efficient, the yield of products is high, and the operability is high, so that the preparation method is suitable for large-scale mechanized production.

The invention discloses a soil DNA indirect extraction method for evaluating the diversity of a plant root system microflora. Because the mean density of bacteria is far smaller than the mean density of soil minerals, a sample is pretreated before cell lysis, and microbial cells are separated from the soil sample, thereby avoiding the problems of difficult humus removal and low DNA recovery rate occurring in the purification process. In the extraction process, the invention does not use phenols or chloroform, the damage to the health of an experimenter is reduced, the obtained DNA is complete, a molecular segment is larger than 10kb, and the yield is high. The OD260 / OD230 and the OD260 / OD280 of the extracted soil microbe DNA approach to a standard value, and the soil DNA indirect extraction method can be directly applied to molecular operation so as to evaluate the diversity of the plant root system microflora.

The invention discloses a preparation method of dandelion smoked tea, which specifically comprises the following steps: cleaning and drying sun-dried dandelion raw materials, removing impurities, performing leaf and stem separation, and performing shredding treatment; adding honey into the dandelion shreds, dipping, putting the dandelion shreds into a shred preparation and storage cabinet, uniformly mixing and storing to ensure that the moisture of the dandelion shreds is uniform, uniformly permeating the honey in the dandelion shreds, rolling, forming by rolling and cutting; and after cutting, connecting a filter tip and packaging into a box. The obtained product is a non-tobacco product and does not contain nicotine and tobacco tar. Under the condition that smoking habits of smoking cessation people are not changed, the absorption of nicotine can be avoided. In addition, tobacco shreds made of dandelion can be drunk according to a tea making method. Therefore, the purpose of smokingcessation is achieved in a healthy smoking mode. Meanwhile, the dandelion has the effects of diminishing inflammation and clearing away heat and toxic materials. The harm of nicotine to the health ofsmokers is reduced.

The invention relates to a freezer with a pressure relief function for storing meat products. The freezer includes a body, a door plate, a pressure relief mechanism and a suction mechanism. The pressure relief mechanism includes a pressure relief plate and two limiting assemblies. The limiting assemblies include limiting rods, springs and limiting plates. The suction mechanism includes a connecting pipe, a suction box, a cooling assembly, a supporting assembly and two suction assemblies. According to the freezer with the pressure relief function for storing the meat products, the air pressuredifference inside and outside the body can be reduced through the pressure relief mechanism before a door is opened, so that a user is convenient to open the door panel and take away goods in the body, and the convenience of opening the door is improved; and when the user opens the door plate, the cold air is absorbed by the suction mechanism, so that when the user opens the door plate, the cold air cannot rise and is blown to the user, and thus the harm of the cold air to the health of the user is reduced, and the safety is improved.

The invention discloses a full-automatic copper net rolling and inner copper sleeve inserting mechanism. The full-automatic copper net rolling and inner copper sleeve inserting mechanism comprises a feeding and cropping module, a copper net rolling module arranged on the lateral side of the feeding and cropping module, and an inner copper sleeve supply module arranged on the lateral side of the copper net rolling module. The feeding and cropping module is adopted for cropping copper net tape into single copper net cropped sheets, then, the copper net rolling module rolls the copper net croppedsheets into cylinders, and finally, the inner copper sleeve supply module is matched for sleeving an inner copper roll net with the inner copper sleeve. Full-automatic rapid copper net rolling and inner copper sleeve sleeving are achieved, hurt to body health of workers is reduced, and the machining efficiency is greatly improved.

The invention relates to a pot polishing machine. The pot polishing machine comprises a closed machine frame shell. A clamping device and a polishing device are arranged in the machine frame shell, wherein the clamping device is used for clamping a pot body to be polished and driving the pot body to be polished to rotate, and the polishing device is used for polishing the pot body to be polished. Besides, the clamping device and the polishing device are controlled through a digital control device and a hydraulic device. The polishing device is arranged on a shifting mechanism and moved on the shifting mechanism so as to polish the pot body to be polished. The shifting mechanism is composed of two transverse guide rails, two longitudinal guide rails and an oblique guide rail. The transverse guide rails are arranged horizontally. The longitudinal guide rails slide on the transverse guide rails through sliding blocks to constitute a guide rail set shaped like a Chinese character 'jing'. The oblique guide rail is arranged on the longitudinal guide rails in a sliding mode through sliding blocks and fixedly connected with the polishing device through a fixed plate I fixed to the oblique guide rail. The pot polishing machine is provided with the polishing device with the guide rails, a dust removal device, a cooling device and the like, thereby being accurate in precision control, simple in structure, integrally formed, high in working efficiency, capable of improving the environment, safe and durable.

The invention discloses a bacteria genome DNA extracting solution in a blood and platelet product and a preparation method and an application method thereof. The bacteria genome DNA extracting solution consists of chelex-100, tween, NP-40, SDS, lysostaphin, a wall-breaking enzyme, a protease K and water. The extracting solution can be effectively used for extracting a bacteria genome DNA with high extraction efficiency. The preparation method and the application method are simple and convenient for operation.

The invention provides a mounting medium capable of reducing fluorescence decay. The mounting medium capable of reducing the fluorescence decay is characterized by comprising the following components: polyvinyl alcohol, glycerol, diazonium bicyclooctane, a metal ion chelating agent, a carbonate buffering solution, a Tris-HCl buffering solution, a preservative and water; and the mounting medium can be used for mounting a sample capable of emitting fluorescence light or a sample which is dyed by the fluorescence light so as to delay the decay degree of the fluorescence light of the sample, and can also be used for mounting after conventional dyeing. The invention further provides a preparation method of the mounting medium capable of reducing the fluorescence decay, and a mounting method; degrees of various types of fluorescence decay or quenching are greatly reduced; and compared with a common anti-fluorescence-quenching mounting medium, the anti-quenching effect is greatly enhanced.

The invention is applicable to the technical field of building waterproof paint, and discloses environment-friendly fast-setting building waterproof paint which comprises a component A and a component B. The component A is prepared from the following raw materials in parts by weight, 70-80 parts of EVA (ethylene-vinyl acetate) emulsion, 10-15 parts of inorganic fillers, 0.3-0.5 part of coagulating agents, 0.5-1 part of stabilizing agents, 0.2-0.3 part of dispersing agents, 0.2-0.3 part of defoaming agents, 0.15-0.25 part of sterilizing agents and 5-15 parts of water. The component B is prepared from the following raw materials in parts by weight, 12-23 parts of setting accelerators, 2.5-8 parts of promoters and 8-14 parts of water. According to the environment-friendly fast-setting building waterproof paint, the EVA emulsion serves as a main film-forming matter which is the component A, liquid alkali-free setting accelerators and nanometer film-forming promoters form the component B of curing agents, construction can be achieved in an atomizing spray mode, the paint is short in film-forming condensation time, uniform in thickness, high in tensile strength and elongation rate, green and environmentally friendly, construction intensity is greatly reduced, and construction efficiency is improved.

The invention discloses a wireless charged sacral nerve adjusting device comprising a sacral nerve stimulator, a built-in battery, a built-in charging device, an external charging device and an external controller. The sacral nerve stimulator is implanted under the skin of a human body. The built-in battery is arranged in the sacral nerve stimulator and is in wired and electrical connection to thebuilt-in charging device. The built-in charging device is coupled to the external charging device. The external charging device is connected with the external controller. According to the wireless charged sacral nerve adjusting device, the built-in charging device and the external charging device charge the built-in battery in the sacral nerve stimulator subcutaneously implanted in the human body, thereby having no need to replace a battery in a surgery, causing little damage to the patient's physical health, generating no surgery cost of replacing the battery, and reducing the economic burden on the patient.

The invention relates to an agent box to distill microorganism gene group DNA from earth and the distilling method. The agent box includes agent A(immersion fluid), agent B(pretreatment fluid), agent C(cracking fluid), and agent D that is made up of RNA enzyme A, agent E Al2(SO4)3, agent F hexadecyl trimethyl amine, and agent G(DNA cleaning fluid). The distilling method includes the following steps: dipping the sample, taking pretreatment to the sample, cracking the microorganism, removing humus, taking DNA coupling, removing protein impurity, adhering DNA, washing DNA, and taking elution to DNA. The advantages of the invention are rapid, little DNA loss, little harmful to researchers, high yield, and low cost, etc.

The invention discloses a dust removing system of an electric cubicle and a dust removing method. The dust removing system comprises a dust removing chamber provided with a door for the electric cubicle to be placed in and taken out, a rotating table used for containing the electric cubicle, and a dust removing device, wherein the outer wall of the dust removing chamber is provided with a window;the top surface of the rotating table forms part of the bottom surface of the dust removing chamber, and the rotating table can rotate so as to drive the electric cubicle to rotate; and the dust removing device can perform dust removing on the electric cubicle located in the dust removing chamber through the window. According to the dust removing system and the dust removing method, an operator can perform dust removing work on the electric cubicle outside the sealed dust removing chamber, and the dust pollution on the environment and the injuries to the body health of the operator are reduced.

The invention discloses a soil grinding system. Two extrusion plates are symmetrically installed on the two sides in a grinding tank through spring assemblies. A motor is installed in a movable cover. The rotating shaft end of the motor is connected with a grinding assembly through a fourth electric telescopic rod. The grinding assembly comprises a transverse plate. The transverse plate is connected with a first grinding rod through a first electric telescopic rod set. First grinding rods are connected with second grinding rods through a second electric telescopic rod set. The second grinding rods are connected with third grinding rods through a third electric telescopic rod set. The lower bottom faces of third grinding rods are fixedly connected with a grinding plate. Movable baffles are installed at the two ends of the transverse plate through rotating shafts with power devices. The first grinding rods, the second grinding rods and the third grinding rods are each provided with grinding particles and brush layers alternately. The soil grinding system is simple in structure, reasonable in design and easy and convenient to operate, manpower and material resources are saved, the processing efficiency is improved, harm caused by dust to health of workers and pollution caused by the dust to the environment are reduced, practicability is high, and the soil grinding system is easy to use and popularize.

The invention discloses a DNA extracting method for evaluating the community diversity of the intestinal microorganisms of animals. Before cell disruption, a sample is pretreated, and DNA and pollutants outside the cells are removed, thereby avoiding the problems of difficult removal of the pollutants and low recovery rate of the DNA in a purification step. In the extracting process of the invention, phenol and chloroform are not used, and damage to the health of experiment personnel is reduced; and the obtained DNA is integral and has high yield, and the molecular fragment is larger than 10kb. The OD260 / OD230 and OD260 / OD280 of the DNA of the extracted intestinal microorganisms are close to standard values and can be directly applied to molecule operation to evaluate the community diversity of the intestinal microorganisms of animals.

The invention discloses a soil DNA extracting method for evaluating diversity of a microbial community of a plant root system. In the method, pretreatment is carried out on a sample before cell splitting, extracellular DNA and humic substances are removed, and the problems of difficult removal of the humic substances and low DNA recovery rate existing in a purification step are solved. In the extraction process of the method, phenol or chloroform is not used so as to reduce harm on the health of experimenters, obtain complete DNA and molecular fragments greater than 10kb and achieve high yield. OD260 / OD230 and OD260 / OD280 of the extracted soil microorganism DNA are close to standard values and can be directly applied to molecular operation so as to evaluate the diversity of the microbial community of the plant root system.

The invention discloses a dust removal system and a dust removal method for an electrical screen cabinet. The dust removal system includes: a dust removal room with a door for putting in and taking out the power supply screen cabinet; a window is arranged on the outer wall of the dust removal room; a rotary table , used to place the electrical screen cabinet, the top surface of the rotary table constitutes a part of the bottom surface of the dust removal room, and the rotary table can rotate to drive the electrical screen cabinet to rotate; dust removal equipment, the dust removal equipment The electrical screen cabinet located in the dust removal room can be dedusted through the window. According to the dust removal system and dust removal method of the present invention, operators can perform dust removal work on electrical screen cabinets outside the sealed dust removal room, reducing dust pollution to the environment and health damage to operators.

The invention provides a mixed solvent used for dissolving nitrated cellulose. The mixed solvent contains 1-50wt% of diethyl succinate, 10-60wt% of acetyl tributyl citrate, 10-80wt% of diethylene glycol butyl ether acetate and 1-40wt% of glycerol triacetate. The invention also provides a water-soluble nitrated cellulose product and a water-soluble nitrated cellulose product prepared by the mixed solvent provided by the invention. The nitrated cellulose product prepared by the mixed solvent is little in smell and low in toxicity, has good volatilization grade, and greatly improves the production environment of leather processing enterprises and alleviates the harm to the body health of workers on the basis of keeping the performances of the nitrated cellulose products.