135results about How to "No hidden danger" patented technology

The invention discloses recombinant bacillus subtilis for producing chondroitin and application of the recombinant bacillus subtilis, belonging to the technical field of biological engineering. According to the recombinant bacillus subtilis, UDP-GlcNAc C4 isomerase KfoA and chondroitin synthetase KfoC encoding genes are integrated into a bacillus subtilis genome, the way for anabolic synthesis of chondroitin is completed, the genes of the synthesis way of UDP-GlcA and UDP-GlcNAc in the bacillus subtilis are subjected to modulation assembling expression analysis, the different concentrations of UDP-GlcA and UDP-GlcNAc are controlled, and key genes and nodes of the synthesis way for producing chondroitin from bacillus subtilis are analyzed. Certain basis is provided for efficiently producing and preparing chondroitin from food-order microorganisms, and the recombinant bacillus subtilis is applicable to industrial production and application.

The invention relates to an azelaic acid gel agent as well as a preparation method and application thereof, belonging to the technical field of skin medicines. The azelaic acid gel agent provided by the invention contains the following components in percentage by weight: 10%-20% of azelaic acid, 0.5%-2% of salicylic acid, 1%-3% of ZEN, 60%-74% of 1,3-propylene glycol and the balance of water. Thegel agent is prepared from azelaic acid by virtue of specific raw materials, is transparent, does not precipitate, is capable of well infiltrating skin and can be applied to the treatment or prevention of acnes, and the curing rate of patients with acnes can be increased; and the components are simple, the azelaic acid gel is capable of resisting bacteria without being added with a preservative, and the preparation method is simple, and the cost is low.

The invention relates to an automobile air conditioner condenser flow gathering pipe welding tool and technology. The automobile air conditioner condenser flow gathering pipe welding tool comprises abottom plate, a penetrating and inserting vertical plate, a transposition plate, a rotation support plate, a rotation shaft and locking devices. The penetrating and inserting vertical plate is arranged on the top of the left end of the bottom plate. The rotation support plate is arranged on the top of the right end of the bottom plate. The right end of the rotation shaft is arranged at the middleportion of the left side face of the rotation support plate through a bearing. The left end of the rotation shaft penetrates through the penetrating and inserting vertical plate. A rocker is arrangedat the left end of the rotation shaft, the transposition plate is arranged at the middle portion of the rotation shaft, and each of the left end and the right end of the transposition plate is provided with one locking device. The automobile air conditioner condenser flow gathering pipe welding tool and technology can solve the problems that during existing condenser heat dissipation plate and flow gathering pipe welding, locking cannot be conducted on a heat dissipation plate structure, hidden danger of heat dissipation plate damage during heat dissipation plate locking exists, and when the heat dissipation plate is rotated for transposition, the rotation position of the heat dissipation plate cannot be limited.

The invention relates to a collecting device for disposing rubbish accumulated in sewers in urban environmental sanitation, in particular to an automatic collecting device for rubbish in urban sewers. The automatic collecting device comprises a supporting device, a lifting device, a rotating device and a rubbish collecting device, wherein the supporting device is installed in a sewer, the lifting device is installed on the supporting device, and the rubbish collecting device is connected with the lifting device through the rotating device. The automatic collecting device has the advantages of intercepting and collecting all kinds of rubbish in a full-automatic mode and can relieve the problems that when environmental sanitation workers clean sewers, rubbish cleaning difficulty is high, rubbish searching blindness is high, rubbish collecting time is long, the area of manual rubbish intercepting and collecting is small, and the working environment is hostile, so that the automatic collecting device has practical significance and popularization prospects and is very wide in application range and easy to use and popularize.

The invention provides a method and device capable of continuously preparing nitrous acid ester. The method comprises the following steps: taking a nitrite solution and an alcohol solution as the raw materials, individually introducing the nitrite solution and alcohol solution into a bipolar membrane electrodialysis device to carry out reactions to obtain three products: reaction mixed liquid containing nitrous acid ester, a residual nitrite solution, and an alkali solution; recovering the residual nitrite as raw materials for cycle use; recovering the alkali solution; making the reaction mixed liquid containing nitrous acid ester go through a gas-liquid separator or a liquid-liquid separator to obtain nitrous acid ester and an alcohol solution, collecting the target product namely nitrous acid ester, and recovering the alcohol solution as raw materials for cycle use. The provided method does not generate waste gas and waste liquid, the produced alkali liquid can be recovered for industrial production, the generated mother liquor can be completely recovered and reutilized in the reaction system, the production technology is environment-friendly, the reaction temperature is low, the reaction process is safe, and no safety hazard exists.

The invention discloses a grain drying technology. According to the grain drying technology, grain is dehumidified by a heat pump, and then dried, so that the grain drying technology has no pollution or combustion discharge, cannot injury a human body and has good social benefits.

The invention discloses heat pump drying equipment, which comprises a heat pump drying unit and a drying tower which is connected with the heat pump drying unit. Grains in the drying tower are dried through the heat pump drying unit. The heat pump drying equipment has the advantages that no pollution is caused, no combustion emission is produced, no harm is caused to human bodies and the social benefits are good; and the energy consumption is low, the energy saving effect is remarkable, the investment return period is short, the energy-efficiency ratio of the product is generally 3-5 in grain harvesting seasons, i.e. 3-5kw of heat can be produced by inputting 1kw of power, and compared with equipment which directly burn energy or crops, the use cost is saved very greatly.

The invention relates to a chlorine dioxide feeding method. Two raw materials for reaction to prepare chlorine dioxide, i.e. a first reactant and a second reactant, are added into a measurement type dissolving tank and are then mixed to prepare a two kinds of solution of the nominal concentrations, the concentration of the solution containing chlorate A is more than or equal to 2 percent, the concentration of the solution containing chlorate B is more than or equal to 5 percent, the two kinds of solution are directly and accurately proportioned or are transferred into a storage tank to be accurately proportioned through a metering pump after preparation and are then transferred into a chlorine dioxide generator for reaction, and finally the two kinds of solution are added into a reactor reception tank for reaction or into a reaction coil for full reaction. When the two kinds of solution are added into the reactor reception tank, the mixture can be added through air. The prepared chlorine dioxide is discharged out of the reactor in the gas form, and can be directly added into water to be treated or added into water to be treated after absorption by an absorbent material.

The invention relates to the technical field of fusarium strains, and in particular relates to a chlamydospore fusarium strain ZC201301. The preservation number of the chlamydospore fusarium strain is CGMCC No.9562. The chlamydospore fusarium strain is separated from leaves of natural pathogenetic digitaria sanguinalis in the field and is strong and quick in pathogenicity to the digitaria sanguinalis; an indoor experiment shows that spores of the strain disclosed by the invention are sprayed to the leaves of the digitaria sanguinalis; after two days, spots appear on the digitaria sanguinalis, and part of the digitaria sanguinalis is withered; after 14 days, the fresh weight suppression rate to the digitaria sanguinalis is 91 percent. The chlamydospore fusarium strain ZC201301 which is a fungus strain has a certain biological prevention effect on grasses such as amaranthus retroflexu and fagopyrin and is safe to crops such as soybeans, corns and wheat.

The application provides a polysaccharide of an organic black fungus and a preparation method of a particle thereof. The method comprises the following steps: Step 1, taking a sporocarp of the organic black fungus, drying the sporocarp, and then crushing the sporocarp to obtain organic black fungus dry powder; Step 2, mixing the organic black fungus dry powder with water and infiltrating the organic black fungus dry powder to obtain an extracting solution; Step 3, carrying out microwave and ultrasonic extraction on the extracting solution in the Step 2, and taking a supernatant solution for later use; Step 4, taking the supernatant solution in the Step 3, removing albumen and discoloring the supernatant solution; Step 5, adding ethanol into a product in the Step 4, carrying out alcohol precipitation, and filtering and washing to obtain a polysaccharide coarse product; Step 6, purifying the polysaccharide coarse product in the Step 5 by high-speed countercurrent chromatography to obtain the polysaccharide of the organic black fungus. In the preparation method, a polysaccharide component of a black fungus is extracted by a method of combining multiple methods such as an ultrasonic extraction method, a microwave extraction method, a water extraction and alcohol precipitation method, a high-speed countercurrent chromatographic method and the like; the purity of the polysaccharide is high; the extraction rate is high; an organic solvent used in a process is few, is not remained, and has no potential hazard; the polysaccharide is safe to eat; the time of the process is short; the cost is low.

The invention discloses triangular skylight. The triangular skylight comprises a skylight integral framework mounted on a deck pedestal, opening casements and an opening mechanism, wherein the skylight framework is equipped with a bottom frame matched with the pedestal; the upper end surface of the bottom frame is equipped with a front baffle plate, a rear baffle plate, a left baffle plate and a right baffle plate which define a framework shape; sections of the left baffle plate and the right baffle plate are triangular; a V-shaped slot is formed in the top of each of the left baffle plate and the right baffle plate; a V-shaped drainage ditch is formed in the V-shaped slot; a supporting plate is mounted on the middle part of the inner side wall of each of the front baffle plate and the rear baffle plate; the opening casements which are mounted at the two sides of the V-shaped drainage ditch in an inclined mode are arranged on the skylight framework; the lower end of the skylight is hinged to side edge holes of the front and rear baffle plates; the middle part of the inner side wall of the skylight is hinged with a piston rod of a telescopic air cylinder or an electric window opener; and a base of the telescopic air cylinder is hinged to the middle part of each supporting plate. The triangular skylight is novel in structural design, does not have hidden trouble caused by rainwater and leakage, also realizes requirements and standards of a standard schematic handbook, and is free of hidden danger; the V-shaped water slot and the integral framework are integrated, and eave of the V-shaped water slot is turned over outwards, so that seepage resistance and integral strength of the skylight are improved.

The invention relates to a solar energy bundling condensation control system which comprises a lens array and a solar thermal collector, wherein the lens array tracks the sun in real time, and the solar thermal collector is used for receiving bundled light beams. The lens array has M row*N line collecting lens units, each collecting lens unit comprises a paraboloid collecting lens and a first reflecting lens, the bottom of each paraboloid collecting lens is provided with a first through hole, a fixed lens is installed in the light path direction passing through each first through hole, and the M*N fixed lenses constitute a lens component together. The lens component has the same condensation focal point, a second reflecting lens is installed at the condensation focal point of the lens component, and the second reflecting lens can enable focal point light concentrated by the M*N fixed lenses to be reflected in a balanced mode to form the bundled light beams which are projected into the solar thermal collector. According to the solar energy bundling condensation control system, the focal points of the lens array are bundled, the unique control point can be achieved, installation and maintenance are simple and practical, and single integrated circuit can be used for replacing a complex computer control system.