169results about How to "Reduce potential harm" patented technology

The invention discloses medium carbon chain fatty acid powder grease and a preparation method thereof. The medium carbon chain fatty acid powder grease comprises the following components in percentage by weight: 40%-60% of MCT (Medium Chain Fatty Acid) grease, 4%-6% of sodium caseinate, 0.5%-2.0% of monoglyceride, 0.3%-0.7% of sodium stearoyl lactylate, 1%-2% of dipotassium hydrogen phosphate, 0.2%-0.4% of silicon dioxide and the balance of glucose syrup. The invention greatly enhances the stability of the MCT grease, extends the application of the MCT grease in the field of foods, prevents the risk of excessive grease intake and also reduces the potential hazards of excessive antioxidant intake.

The invention provides a photocatalyst paint composition, comprising 0.5-10wt% of photocatalyst, 5-15wt% of adsorbent, 5-10wt% of dispersing agent, 3-5wt% of binder, 0.5-3wt% of foaming agent, 10-30wt% of organic solvent and the balance of water. The paint composition is characterized in that the adsorbent is in a mixed powder structure in which the adsorbent is cladded by the photocatalyst. The photocatalyst paint composition can be applied to surface of interior wall material and can remove indoor air pollution for a long term, so as to create a safe and clean indoor environment for human.

The invention discloses a white LED lamp secondary encapsulation structure capable of reducing blue-light hazards. The white LED lamp secondary encapsulation structure comprises a substrate, a blue LED chip and a YAG (yttrium aluminum garnet) yellow fluorescent powder layer. The blue LED chip is fixed onto the substrate, the YAG yellow fluorescent powder layer is overlaid on the blue LED chip, an outer fluorescent lampshade which covers the blue LED chip and the YAG yellow fluorescent powder layer is further fixed onto the substrate, and YAG yellow fluorescent powder is arranged on the outer fluorescent lampshade. The white LED lamp secondary encapsulation structure has the advantages that colors of white light emitted by an LED illuminating lamp are uniform, soft and harmonious by the aid of the white LED lamp secondary encapsulation structure; more importantly, influence of heat dissipated by the blue LED chip on the performance of the fluorescent powder can be effectively reduced, color temperature drift due to the heat of the chip is prevented, and the service life of the fluorescent powder is prolonged; blue-light radiation dosage is effectively reduced, blue-light radiation is scattered uniformly, and the potential hazards to people and organisms are reduced.

The pesticide composition consists of emamectin benzoate 0.1-5 wt%, effective component B 0.2-30 wt%, synergist 0.1-5 wt%, emulsifier 5.0-20 wt%, and solvent 45-90 wt%. The effective component B is chlorfenapyr, diafenthiuron, fipronil, beta-cypermethrin, cyhalothrin or their any mixture. The present invention can prevent and kill several kinds of pests, and this can reduce pesticide consumption, lower agricultural cost and reduce pollution.

The invention discloses an algorithm for detecting object and passenger behaviors on an escalator floor plate based on machine vision, which comprises the steps of 1) acquiring video images; 2) building a background model by using a CodeBook algorithm, and extracting an object and passenger foreground image; 3) performing head feature extraction on the foreground image by using an HOG descriptor; 4) performing head detection on the foreground image by using an AdaBoost cascade classifier; 5) tracking a passenger target by using a Kalman filter; 6) performing contour detection and ellipse fitting on the foreground image by using a Fitzgibbon algorithm; 7) removing the passenger target in the step 6), and tracking an object target by using the Kalman filter; and 8) and judging behaviors of the object and the passenger through analyzing the moving speed and the moving direction of center coordinates of the object and the passenger. According to the algorithm, detection and analysis can be performed on object and passenger behaviors on the escalator floor plate, an emergency plan can be started timely when an exception occurs, and potential hazards of an exceptional situation are enabled to be minimized.

The invention discloses the preparation methods of a complete antigen of clenbuterol hydrochloride and a monoclonal antibody of the clenbuterol hydrochloride. Firstly, the clenbuterol hydrochloride reacts with sodium nitrite under the acid condition to obtain azo clenbuterol hydrochloride; then the azo clenbuterol hydrochloride coupled with bovine serum albumin under the alkaline condition to prepare for the complete antigen of the clenbuterol hydrochloride. A balb / c pure line rat is immunized, after IELISA test shows that the serum of the rat after immunity is eligible, the cell fusion is processed for preparing for the monoclonal antibody of the clenbuterol hydrochloride. The complete antigen of the clenbuterol hydrochloride prepared by the invention can be used for immunizing the animal. The prepared monoclonal antibody can be used for testing the residual quantity of the clenbuterol hydrochloride in meat, meat products, livestock feed and animal body before the animal is slaughtered. The coupling rate of the clenbuterol hydrochloride in the complete antigen of the clenbuterol hydrochloride obtained by the method of the invention with the bovine serum albumin is 17, and a molecular structure formula thereof is as above.

The invention relates to a technology for pre-treating residual sludge, in particular to a microwave-hydrogen peroxide synergism-based method and device for treating residual sludge. In the method, a hydrogen peroxide solution is fed according to the mass ratio of pure hydrogen peroxide to the dry weight of the sludge being 0.2-2; under the normal-pressure opening condition, the high-efficiency decomposition of the residual sludge is realized by adopting a microwave-hydrogen peroxide technology and the subsequent biological availability of the residual sludge is improved. Before reaction, the treatment effect of the residual sludge is enhanced by controlling the condition of pH value. The device disclosed by the invention mainly comprises a heat exchanger and a microwave reactor. The method disclosed by the invention has the advantages of simple process, short flow and high efficiency. In addition, the treated residual activated sludge can be recycled. The device disclosed by the invention has less investment and is suitable for various medium-small systems for treating the residual sludge.

The invention relates to a method and device for processing radioactive strontium-contained waste water. Chemical reactions are achieved between the radioactive strontium-contained waste water in a hydrocyclone and calcium carbonate seed crystals through hydrocycolone stirring and between the radioactive strontium-contained waste water in the hydrocyclone and sodium carbonate through hydrocycolone stirring, and therefore strontium carbonate is deposited on the surfaces of the calcium carbonate seed crystals and forms large-grain-size tight crystal particulate matter, and the large-grain-size tight crystal particulate matter rapidly sedimentates at the bottom of the hydrocyclone so that a part of radioactive strontium ions can be removed; small-grain-size strontium carbonate and small-grain-size seed crystals enter a membrane separator along with the supernatant to react with ferric chloride, the radioactive strontium ions are further removed after the particulate matter is separated through a hollow fibrous membrane, and therefore the radioactivity of discharged water is greatly lowered. The particulate matter formed through the method is large in grain size, compact in structure and good in sedimentation performance, the defects that the chemical precipitation method is low in decontamination factor and large in mud production amount are effectively overcome, the disadvantage that the membrane is seriously contaminated in the membrane separation process is also eliminated, and the method for processing the radioactive strontium-contained waste water is economical and practical.

The invention discloses a method for manufacturing fracturing fluid, and belongs to the technical field of chemicals for oil and gas production. The method is characterized in that refined cotton with a high polymerization degree is used as a cellulose raw material, and celluloses are alkalified and etherified and are subjected to micro-crosslinking to obtain a high-viscosity thickening material (semi-synthesis polymer gel) with high salt resistance; the high-viscosity thickening material is used as a thickener and a substitute for guar gum, and metal aluminum salt or titanium salt or zircon salt or a composite of the metal aluminum salt, the titanium salt and the zircon salt is used as a crosslinking agent to develop the all-clean aqueous fracturing fluid. The method has the advantages that shortcomings of the traditional guar gum fracturing fluid and a fracturing technology of the traditional guar gum fracturing fluid are overcome; the fracturing fluid is high in viscosity and salt resistance and excellent in high-temperature sand-carrying and sand-suspending performance; the fracturing fluid is free of residues after gel breaking, is low in damage to formations and is not easy to mildew, and potential damage to reservoir due to gel breakage dead space and accumulation of residual gel is reduced; the fracturing fluid can resist the high temperature of 150 DEG C.

The invention provides a staircase ramp, which belongs to a ramp used for upward or downward towing of draw-bar cases and bags and combination with a staircase. A walking region is arranged between the two ramps; and people walk in the walking region when towing the draw-bar cases and bags. The staircase ramp provided by the invention has the advantages that pedestrians pulling the draw-bar cases and bags can conveniently go upstairs or downstairs, so that the force exerted on the draw-bar cases and bags by people and the gravity of the draw-bar cases and bags are simultaneously exerted on the longitudinal vertical cross section of the corresponding ramp; and the draw-bar cases and bags can be easily controlled to be linearly and upwards towed or linearly and downwards towed along the ramp. Baffle strips are arranged in connecting positions of the ramps and the staircase and the two ends of the walking region; and the draw-bar cases and bags are prevented from sliding and falling off from the ramp during the upward or downward moving. The invention also provides the staircase ramp with an anti-slip facility. An anti-slip structure consists of a plurality of half-water-drop structures in uniform distribution, wherein each half-water-drop structure comprises arc-shaped circular arc sections and concave circular arc sections in end-to-end connection. The anti-slip structure has the advantage that the probability that the cases and bags fall out from the hand of people and the potential danger that the cases and bags bruise the pedestrians are greatly reduced.

The invention discloses a method and a device for pretreating excess sludge of a sewage plant by a microwave method for fermentation to produce hydrogen. The method comprises the following steps: microwave is utilized to pretreat the excess sludge of the sewage plant for 2 to 20 minutes, then the sludge pretreated by the microwave is placed into a sealed fermentation hydrogen production reactor, hydrogen production seed sludge which accounts for 5 to 15 percent of the volume of the excess sludge is grafted, the temperature is controlled to between 25 and 45 DEG C for fermentation hydrogen production, and hydrogen is produced after 8 to 15 hours. The device comprises a microwave generator, the fermentation hydrogen production reactor and a hydrogen collection device, wherein the top of the fermentation hydrogen production reactor is provided with a hydrogen outlet, while the bottom is provided with a sludge inlet and a sludge discharge outlet; the microwave generator is connected with the sludge inlet of the fermentation hydrogen production reactor; the hydrogen collection device is connected with the hydrogen outlet of the fermentation hydrogen production reactor; and the fermentation hydrogen production reactor is provided with a stirrer and a heater. The method has the advantages that the method has large hydrogen yield and short delay time, can improve the biological redegradation capability of the sludge, can release heavy metals in the sludge, reduce the pollution of landfill treatment to soil, and has simple equipment, low cost and less energy consumption.

The invention provides high oxidation resistance medium / long chain fat emulsion injection (C8-C24) and a preparation method thereof. The fat injection consists of soybean oil for active component injection, median chain triglyceride oil, emulsifier, isoosmotic adjusting agent, metal ion chelation agent and water for injection. The method comprises the following steps: under inert gas environment, adding the emulsifier and the coemulsifier into the heated soybean oil for injection and the median chain triglyceride oil, and uniformly stirring the mixture at high speed serving as oil phase; uniformly mixing the isoosmotic adjusting agent and the metal ion chelation agent with proper water for injection, and filtering the solution serving as water phase; in high speed stirring, combining the oil phase and the water phase, continuously stirring the mixture to foremilk at high speed, adjusting the pH of the foremilk to be between 9.0 and 10.0, adding the water for injection to the volume of 1,000ml; homogenizing the foremilk after the foremilk is uniformly mixed by a high pressure homogenizer until the milk particles are qualified; and preparing the medium / long chain fat emulsion injection through filling, nitrogen introducing, plugging, capping, sterilizing and cooling after filtration.

The invention discloses a preparing method and a use method of a chlorinated organic compound polluted soil repairing agent. The preparing method comprises: adding bentonite particles into deionized water, agitating, centrifuging at a low speed and removing particles of which the particle size is larger than 2 micrometers; adding the bentonite particles into a 0.1M FeCl3 solution according to an adding amount of 20-50g / L, agitating, mixing, centrifuging to remove supernatant, obtaining Fe3+ saturated bentonite particles, and washing; putting iron ion saturated bentonite particles into de-oxidized and deionized water, regulating the pH of a solution to 2 to 3.5, rapidly adding NaBH4 into particle paste under inert gas protection, rapidly covering a bottle cap, reacting for 1-3 minutes at a room temperature, and centrifuging at a high speed so as to obtain supported type ultrafine zero-valent iron; and 4), mixing alcohol of which the purity is higher than 95% with the supported type ultrafine zero-valent iron according to a ratio of 20-40:1, preparing the repairing agent, sealing and storing. Chlorinated organic compound polluted soil is synchronously treated by using an organic cosolvent and the zero-valent iron. The method can improve the soil repairing efficiency under the condition of saving cost and lowering actual operation difficulty.

The invention discloses an escalator floor plate video monitoring method by combination of machine visual sense and infrared array. The method includes the steps of acquiring video images and infrared images, 2) coordinate registering for the video images and infrared images, 3) using CodeBook algorithm to establish a background model, extracting article and passenger foreground images, 4) using infrared images to detect pedestrians in foreground images, 5) using a Kalman filter to track passenger targets, 6) using Fitzgibbon algorithm to conduct contour detection and ellipse fitting for the foreground images, 7) eliminating passenger targets in 6) and using the Kalman filter to track article targets, and 8) monitoring the floor plate area by analyzing the moving speed and moving direction of the articles and passenger center coordinates. Articles and passenger behavior on an escalator floor plate can be detected and analyzed through the algorithm. When abnormity occurs, an emergency solution can be timely started to minimize the potential damage of the abnormity.

The invention relates to a preparation method of high-purity dexrazoxane, which comprises the following steps of: (1) cyclization reaction: carrying out cyclization reaction between (S)-1, 2-propane diamine-N, N, N', N'-tetracetic acid or disodium salt of (S)-1, 2-propane diamine-N, N, N', N'-tetracetic acid and formamide, wherein a high boiling point solvent is used; (2) preparation of salt-containing crude product: evaporating the mixture, which is obtained after reaction, for removing the formamide by pressure reduction and concentration, adding organic solvent into the mixture, and filtering to obtain solid; (3) preparation of crude product: adding dioxane into the salt-containing crude product, heating for backflow, filtering, concentrating the filtrate, adding organic solvent into the filtrate to obtain the crude product of dexrazoxane; and (4) refining: adding the crude product of dexrazoxane into N, N'-dimethyl formamide, heating for dissolving, dropwise adding the solvent, carrying out crystallization, filtering to obtain solid, washing the obtained solid with the solvent, drying to finally obtain the high-purity dexrazoxane. The method for synthesizing dexrazoxane is stable in yield and easy in condition control; the product purity is higher than 99.5% and residual organic solvent is little, and the synthesis cost can be reduced.

The invention discloses a natural plant preservative containing shampoo for children, which comprises sodium lauroamphoacetate, cocamidopropyl betaine, propylene glycol, glycol distearate, phenoxyethanol, caprylyl glycol and a preservative; and the shampoo is characterized in that the preservative is a plant preservative, and the plant preservative comprises the following components in parts by weight: 20-40 parts of a rhubarb extracting solution, 5-10 parts of a cassia bark extracting solution, 5-20 parts of a pericarpium granati extracting solution, 10-20 parts of a magnolia biloba extracting solution, 10-35 parts of a saxifraga stolonifera extracting solution, and 10-15 parts of a white ilicifolius extracting solution. The shampoo disclosed by the invention can be applied in the technical field of shampoos for children; and according to the invention, through the addition of the natural plant preservative, the effective reduction of the addition amount of the artificially synthesized preservative is realized, and then the safety of the shampoo for children can be further effectively guaranteed.

The invention discloses an artificial cochlea to reduce potential hazards of products to a human body. The external machine part of the artificial cochlea comprise a speech processor, an external magnet and a transmission coil, wherein the speech processor processes sound wave signals and generates coded signals; the external magnet attracts an internal magnet which is arranged in an implant device; the transmission coil comprises more than one external coil; the external coils are wound around the external magnet respectively and are grounded; the external coils are exclusively and concentrically connected with the same number of internal coils in the implant device; and each external coil corresponds to an independent speech frequency range of the speech processor, receives the output coded signals of each speech frequency range of the speech processor and correspondingly transmits the coded signals of each speech frequency range to the identical numbers of internal coils in the implant device one by one. The artificial cochlea reduces the potential hazards to the human body, improves the product safety and has high convenience and usability.

The invention discloses a fibroin care solution with functions of contracting genitals and whitening, and relates to the field of a disposable hygiene product. The fibroin care solution mainly comprises the following components by weight percent: 0.05-3% of fibroin, 0.1-5% of tightening agent, 0.1-10% of hydrolyzed elastic collagen, 0.2-1% of royal jelly and deionized water. The fibroin care solution can solve the problem that the skin of the private part of a woman is flabby based on the principle of skin aging, and is high in whitening effect due to the synergistic effect of all whitening components; the inhibiting effect for common pathogenic bacteria of plant extract is utilized, so that the potential hazard for the private part of the woman caused by a chemical disinfectant can be reduced, and the drug resistance of the bacteria can be avoided; a mild foaming agent is fed into the fibroin care solution, so that the foam type care solution is prepared; compared with the liquid care solution, the foam type care solution is more convenient to use.

The present invention discloses one attenuated vaccinia virus Tiantan plant carrier and its preparation process and application, and the attenuated vaccinia virus is high attenuated TT.WHU.ZCI, CCTCC: V200417. The preparation process includes the following steps: A. constituting shuttle plasmid containing flanking sequence homogenous with the coding region sequence or coding region lateral sequences of the vaccinia virus Tiantan plant HA gene, or containing flanking sequence homogenous with the promoter sequence or lateral sequences of the vaccinia virus Tiantan plant HA gene; and B. homogenously recombining the shuttle plasmid and the vaccinia virus Tiantan plant to deactivate vaccinia virus HA gene part for high attenuating the vaccinia virus Tiantan plant. The attenuated vaccinia virus Tiantan plant carrier is used in preparing vaccine for treating or preventing infectious diseases.

In the invention, Al(OH)3 is separated after the crystallization of NaAlO2 in a proper amount of water, so aluminum ions in an etching liquid is controlled in a process range (the concentration of the aluminum ions is 35-65g / L), thereby the stable etching speed of aluminum and its alloy is ensured, and the service life of the etching liquid is prolonged above 5 times.

Embodiments of the invention provide a method for green extraction and determination of a variety of compounds in the Chinese herbal compound drug Naoxintong. The method comprises the following steps: (1) acquiring liquid extract of a Naoxintong sample by using a matrix solid-phase dispersion extraction process, wherein the mass of the Naoxintong sample is 10-50 mg, an adsorbent is magnesium silicate, a mass ratio of the Naoxintong sample and the adsorbent is (2: 1) to (1: 5), an eluent is methanol with a concentration of 60% to 100 % and contains 0-0.2% by volume of formic acid, the ratio of the mass of the Naoxintong sample to an elution volume is 25-42 mg / mL, and grinding time of the Naoxintong sample and the adsorbent is 0-8 minutes; and (2) analyzing the liquid extract of the Naoxintong sample by using ultra-high performance liquid chromatography so as to determine the contents of the compounds in the Chinese herbal compound drug Naoxintong. The determination method provided by the invention can provide a theoretical basis for the validation studies of traditional Chinese medicines and provide technical support for the quality control of Naoxintong.

The present invention discloses one attenuated vaccinia virus Tiantan plant carrier and its preparation process and application, and the attenuated vaccinia virus is obviously attenuated TT.WHU.pZCI, CCTCC: V200416. The preparation process includes the following steps: A. constituting shuttle plasmid containing flanking sequence homogenous with the late promoter sequence or two flanking sequences of the vaccinia virus Tiantan plant HA gene; and B. homogenously recombining the shuttle plasmid and the vaccinia virus Tiantan plant to deactivate vaccinia virus HA gene part for obviously attenuating the vaccinia virus Tiantan plant. The attenuated vaccinia virus Tiantan plant carrier is used in preparing vaccine for treating or preventing infectious diseases.

The invention discloses a production method for burning environment-friendly sintered bricks by using sludge from a printing and dyeing sewage treatment plant. The method mainly includes the steps ofsludge drying, smashing and uniform mixing, ageing, manufacturing of green bricks by heat preservation, curing and roasting. Due to the high organic matter content of the sludge, according to the method, a function of a pore-forming agent is achieved during high-temperature roasting, obtained sludge bricks are light, insulate heat, absorb sound and reduce noise and are ecological environment-friendly bricks with excellent performances. The use of the sludge for the preparation of building bricks can effectively achieve economic, environmental and social benefits of sludge disposal. High-temperature roasting can convert heavy metals into insoluble or completely fixe the heavy metals in the lattices of bricks, thereby minimizing the potential hazards of the sludge to the environment.

The invention discloses a debris flow sediment transport control method suitable for a broad valley type debris flow gully. The transverse width of the broad valley type debris flow gully is 50-400 m, and the longitudinal gradient of a gully bed is smaller than or equal to 15 degrees; a sediment transport groove in the gully bed is backfilled by utilizing existing loose solid materials on the gully bed in the flowing area and accumulation area of debris flow in the gully, and the ground line curvature of the backfilled groove is smaller than three percents; multiple sand blocking cob walls distributed at a certain interval are transversely built by utilizing the existing loose solid materials on the gully along the gully contour line in the flowing area and accumulation area of the debris flow in the gully; deep-rootedness arbores or bamboos are planted at the edges of the cob walls along the trend of the cob walls in the shape of a strip. According to the method, not only is sediment effectively prevented from entering a main river, but also a large amount of the blocked sediment can be locally converted into precious land resources, and the comprehensive corporate governance goals of achieving low governance cost and high economic benefit, changing harm to benefit and improving the ecology landscape of the gully are achieved.

The invention discloses a method for purifying reverse osmosis concentrated water with an active carbon-membrane separation accumulation countercurrent absorption technology. The method comprises the following steps of: extracting concentrated drain water produced in the running process of a reverse osmosis device, and adding into a membrane reactor for undergoing an adsorption reaction; dissolving powder active carbon (PAC) into the membrane reactor for continually adsorbing, wherein the adding amount of the PAC is determined according to the content of organic matters in the reverse osmosis concentrated water, and the adding amount of the PAC can be added appropriately if a treatment effect is poor; and performing aerated stirring and circulating reflux, adsorbing for 10-15 minutes, uniformly dispersing the PAC, fully mixing with reverse osmosis concentrated water, and discharging purified water with a hollow fiber membrane assembly. PAC accumulation countercurrent absorption and membrane separation are used together, so that cost is low, operation is easy and convenient, and automatic degree is high. Due to the adoption of the method for purifying reverse osmosis concentrated water, the requirements of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant are met, and the potential hazard of direct discharge on a water environment is reduced; and the method plays an important role in maintaining the balance of a water ecological system.

A water cleaning agent is prepared from aluminium polyalumiante, iron polyaluminate, polyacrylamide and fluorescent whitening agent through mixing. Its advantages are high effect, low dosage, short period and no secondary pollution.

The invention relates to an adsorption and degradation material as well as a preparation method and application thereof. The adsorption and degradation material is formed by compounding nano zero-valent iron and a Ag-MONTs material, and the Ag-MONTs material is used as a carrier. The Ag-MONTs material is prepared from the following raw materials: 1, 2, 3-trimellitic acid, 4, 4-dipyridyl and a metal salt of silver. The adsorption capacity is high, the amount of residual silver and iron in the water body is small, and secondary pollution to the water body is avoided.

The invention discloses an encrypted stream identification method and device. The method comprises the steps of obtaining a to-be-identified encrypted stream; selecting a first set number of messagesfrom the to-be-identified encrypted stream; calculating a characteristic value of a selected characteristic of at least a message head of the to-be-identified encrypted stream based on the characteristic value of the selected characteristic of at least one message head of each message in the first set number of messages; inputting the characteristic value of the selected characteristic of the at least one message head of the to-be-identified encrypted stream to a trained random forest model to obtain an identification result of the to-be-identified encrypted stream. The scheme can greatly reduce identification time and can decrease potential hazards to users.