17results about How to "Stable conditions" patented technology

The invention belongs to the technical field of cofferdam construction control, and particularly discloses a sinking construction control method for a deepwater bare rock geology bottom-sealing-free double-wall steel cofferdam, which comprises the following steps: collecting bare rock characteristic data and water body characteristic data of a construction area, and collecting cofferdam information including size, shape, weight and surface roughness; an auxiliary sinking mode switching position is confirmed, and an initial construction time period is confirmed; state information in the sinking process is monitored in real time, sinking adjustment judgment is conducted, when the judgment result is adjustment, current adjustment sinking information is confirmed, and when the judgment result is not adjustment, sinking continues to be executed; and controlling the sinking construction process of the steel cofferdam, and returning to the previous step while implementing control measures until the cofferdam is mounted. According to the method, the hydrological characteristics and the change conditions of the construction water area can be comprehensively mastered, meanwhile, multi-link linkage control is achieved during sinking adjustment, and the construction efficiency and the construction accuracy of the cofferdam are greatly improved.

The invention relates to the field of garden construction, and discloses a garden landscape road and a construction technology thereof.The garden landscape road comprises 70%-75% of an asphalt concrete base layer and 25%-30% of an anti-skid surface layer; the asphalt concrete base layer specifically comprises 40%-50% of coarse aggregate, 30%-35% of fine aggregate, 4%-6% of asphalt and 3%-5% of mineral powder; and the anti-skid surface layer specifically comprises the following components in percentage by weight: 20-30% of colored anti-skid ceramic particles, 10-15% of modified asphalt cement, 30-40% of fine aggregate and 1-2% of fiber material. The antiskid surface layer is arranged, and the colorful antiskid ceramic particles, the modified asphalt cement, the fine aggregate and the fiber material are mixed according to a specific proportion, so that the friction force of the pavement is effectively increased. Different from the traditional pavement made of cement concrete and marble, the pavement provided by the invention can provide stable walking and driving conditions for vehicles and pedestrians even in rainy days, so that the risk of slipping or falling down is greatly reduced, the safety of the garden pavement is guaranteed, and accidents caused by slippery pavement are reduced.

The invention relates to the technical field of primary explosive production equipment, and particularly discloses a continuous chemical combination reactor which comprises a reactor body, the side wall of the reactor body is hollow, a mechanical stirring device is fixedly arranged on the upper end face of the reactor body, and one end of the mechanical stirring device extends into the reactor body; a raw material solution pipe and a water inlet pipe are arranged on one side of the mechanical stirring device; a sensor is arranged on one side of the stirring device, and one end of the sensor extends into the reactor; the side wall of the reactor is provided with a cold and hot water inlet and a cold and hot water return port which are circularly communicated with the interlayer of the reaction kettle; a gas pipe is arranged at the bottom of the reactor and inserted into the bottom of the reactor; a discharge hole is formed in the lower end of the reactor, the discharge hole is communicated with a plurality of suction filtration tanks arranged at the lower end of the discharge hole, and a valve is arranged between the discharge hole and each suction filtration tank; the invention aims to enable the concentration of materials and reaction conditions in the reaction process to be always kept stable in a continuous feeding and discharging mode, the generated initiating explosive particles are uniform in size, the yield is high, the production is simple, and the cost is reduced.

The invention discloses a method for achieving multiple purposes of a ground gas pre-pumping well in a coal face, and belongs to the technical field of coal mine area gas extraction, goaf filling and CO2 goaf storage. A plurality of ground gas extraction wells are constructed in a coal face to pre-extract coal seam gas, before the working face is extracted to the positions of the gas pre-extraction wells, perforation is conducted on a sleeve section within the mining disturbance range, and after pipe cutting and plugging are conducted on an underground gas pre-extraction coal seam section, negative pressure extraction is conducted on a pressure relief coal seam and goaf gas; after the working face goaf is completely formed and sealed, coal gangue and fly ash mixed paste and CO2 are injected into the goaf and the mining disturbance space at high pressure through the well, and efficient linkage of coal face gas pre-extraction, pressure relief coal seam and goaf gas extraction, goaf filling and goaf CO2 mineralization and storage is achieved. According to the method, the coal face gas pre-pumping well can be used for multiple purposes, the comprehensive cost of gas pre-pumping, pressure relief, goaf gas extraction, goaf filling and coal gangue treatment is reduced, and the method has safe, environmental and social benefits.

The invention discloses an energy-saving efficient dimethyl ether vaporizing and mixing method taking CO as carrier gas, and relates to the technical field of dimethyl ether vaporizing, a transfer structure of a transfer gas bin is additionally arranged in the process of injecting gaseous CO and gaseous dimethyl ether into a carbonylation reactor, and is used for isolating a dimethyl ether vaporizer from the carbonylation reactor; the method is characterized in that gaseous CO and gaseous dimethyl ether are mixed in advance, on the basis, a first-order balance model, a second-order balance model and a third-order balance model are set, and on the basis of pressure and temperature changes in the gaseous CO and the gaseous dimethyl ether and on the basis that temperature / pressure does not actively affect interference, the temperature and the pressure of the first-order balance model, the second-order balance model and the third-order balance model are calculated. A mixing process and an injection process of gaseous CO and gaseous dimethyl ether are maintained in a correlative manner, specifically, a third-order equilibrium model is taken as a previous step, the temperature of dimethyl ether and the gas amount of mixed gas supplemented to a carbonylation reactor are controlled in a manner of balancing a fluctuation value, and the overall vaporization and carbonyl reaction process is maintained.

The application discloses a preparation method and application of an antistatic composite fiber, and belongs to the technical field of fiber preparation, and is used for solving the technical problem that the antistatic performance and tensile resistance of the fiber in the prior art need to be further improved; graphene oxide, dopamine hydrochloride and choline lactate are used to prepare a static conduction functional powder, a phosphorus-silicon reaction oligomer, imidazole and a static conduction polyester particle are used to prepare a phosphorus-silicon functional base material, and the static conduction functional powder and the phosphorus-silicon structural unit are further introduced into a polyester system in a stable and cooperative manner to improve the interface organization state and component matching relationship, so that the structural stability, processing adaptability and antistatic function maintaining capacity of the material are improved.

The utility model provides a combined type blast hot regeneration dryer, dryer import, precooling evaporimeter, gas -liquid separator, alternate adsorption module, dryer export connect gradually form the cooling adsorption flow path, the air blower, the heat accumulator, the heater, alternate adsorption module, second waste gas blowdown valve connect gradually form environmental gas heating regeneration flow path, precooling evaporimeter, refrigeration compressor, condenser, throttling device form refrigeration circulation flow path, dryer export, alternate adsorption module, first waste gas blowdown valve form first finished gas cold blow cooling flow path. The utility model provides a combined type blast hot regeneration dryer, adopts the way that low temperature pretreatment and regeneration process high temperature heat compensation are combined in adsorption process to ensure that adsorbent has stable, good adsorption and regeneration condition in each adsorption cycle, can make gas get deep drying, and effectively reduce the system energy consumption in the processing process.

The invention discloses bilirubin nanoparticles for treating atherosclerosis and a preparation method of the bilirubin nanoparticles. The bilirubin nanoparticles mainly comprise bilirubin, polyethylene glycol and selenocystamine dihydrochloride, and the whole preparation method is simple in process operation, stable in condition and good in reproducibility. The bilirubin nano-particles can be used for treating atherosclerosis and relieving inflammatory reaction, can be applied to preparation of atherosclerosis treatment drugs and inflammatory disease treatment drugs, and have wide clinical application prospects.

The invention relates to a facility for manufacturing a wind turbine rotor blade and a gas exhaust system. The facility (200) for manufacturing a wind turbine rotor blade (110) comprises a plurality of stationary molds (202) for manufacturing parts of the wind turbine rotor blade (110), a gas exhaust system (203) comprising a plurality of gas exhaust terminals (204), each gas exhaust terminal (204) being fixedly arranged relative to the molds (202), and a vacuum pump (208) generating exhaust gases during operation, wherein the vacuum pump (208) is movable relative to the molds (202) and the plurality of gas exhaust terminals (204) such that the vacuum pump (208) can be selectively connected to one of the plurality of gas exhaust terminals (204) for exhausting the exhaust gases of the vacuum pump (208) to the outside (210) of the facility (200).

The application discloses a supercritical hydrothermal combustion type downhole multi-element heat fluid generating method and device; a first-stage combustion zone, a second-stage combustion zone, a third-stage reaction zone, a fourth-stage reaction zone and a fifth-stage mixing zone are arranged, a hot surface forced ignition mode is adopted, cold fuel injection stable ignition in a starting stage is realized, and cold fuel ignition requirements of a downhole device are met; large-flow material is axially graded, upper combustion / reaction provides heat for lower reaction, stable supercritical hydrothermal combustion and rapid oxidation of material at each stage are ensured in the downhole device with limited radial space, and large-flow of the downhole multi-element heat fluid generating device is realized; a hydraulic turbine is installed at the bottom of the multi-element heat fluid generating device, pressure potential energy of generated supercritical fluid is effectively utilized, and parameter self-adjustment of the multi-element heat fluid is realized; and the application can provide a feasible scheme and technical guidance for efficient and clean heavy oil thermal recovery technology.

The utility model relates to the technical field of hydrogen production by electrolyzing water, and discloses an alkaline hydrogen production device by electrolyzing water, which comprises a base, an electrolytic tank is fixedly connected to the top of the base close to the front side, a power supply is fixedly connected to the front side of the electrolytic tank, and an alkaline liquid box is fixedly connected to the top of the base close to the right side. A water cooling chamber is fixedly connected to the rear side of the top of the base, a water storage tank is fixedly connected to the center of the top of the base, and an air pump is arranged on the rear side of the base. In the water electrolysis hydrogen production device, the pH detector is arranged in the electrolysis tank to monitor the acid-base property of the electrolyte in real time, the pipeline for conveying the alkaline liquid is arranged at the top of the tank body, the acid-base state of the electrolyte can be automatically adjusted according to the change of the pH value, and the collected hydrogen is conveyed to the water cooling chamber, so that the hydrogen production efficiency is improved. And the temperature of hydrogen generated by electrolysis can be effectively reduced, and subsequent collection and treatment are facilitated.

The invention belongs to the technical field of prawn culture, and particularly relates to a method for treating vibrio diseases of litopenaeus vannamei seedlings through biological floccules. The method comprises the following steps: (1) preparing runway type biofloc; (2) preparing functional biofloc; and (3) treating vibrio diseases in opossum shrimp and larval shrimp stages. The vibrio disease at the big seedling stage is treated. The invention provides an effective method for treating vibrio diseases of prawn seedlings without using antibiotics, solves the problem of antibiotic abuse in the seedling raising process, and has important significance in promoting green and healthy development of the prawn seedling raising industry.

The invention relates to a method for preparing auricularia auricula polysaccharide through fermentation of eurotium cristatum. The black fungus is crushed and sieved, and then mixed with distilled water for autoclaved sterilization. After cooling, adding 5% (v / w) of eurotium cristatum, and fermenting at 28 DEG C; after fermentation is finished, distilled water is added, and ultrasonic treatment is performed after uniform stirring. Then, adjusting the pH value to 9-11, magnetically stirring for 0.5-2 hours, performing centrifugal separation, collecting supernate, and concentrating to 1 / 4-1 / 8 of the original volume; adjusting the pH value to 2.0-5.0, carrying out cold precipitation in a refrigerator at 4 DEG C for 12-36 hours, centrifuging again, collecting supernate, and adding absolute ethyl alcohol to precipitate polysaccharide. And finally, freeze-drying the precipitate to obtain the auricularia auricula polysaccharide. The yield of the fermented polysaccharide is 8.175%, when the concentration of the fermented polysaccharide is 2.0 mg / mL, the scavenging rates of the fermented polysaccharide on DPPH and superoxide anion free radicals are 63.74% and 57.11% respectively, and the inhibition rate of alpha-amylase is 69.57%. The method is simple in process, the obtained auricularia auricula polysaccharide is high in yield and biological activity, and the method is suitable for large-scale production and is widely applied to the fields of food, medicine and health care products.

The present application relates to a kind of light response multifunctional nano enzyme and its preparation method and application, belong to nano enzyme catalysis field.The nano enzyme described in the present application can utilize Pt, Te precursor, is prepared by hydrothermal synthesis method, synthesis method is simple, condition is stable, and repeatability is high.The nano enzyme exists multiple enzyme activity such as oxidase-like enzyme, peroxide enzyme-like, hydrogen peroxide enzyme-like, glutathione peroxidase-like, has good stability, catalytic effect, catalytic rate fast and the like characteristics.Meanwhile, by using the good photo-thermal effect and photodynamic performance of the nano enzyme, the synergy treatment of chemical dynamics, photodynamic and photo-thermal is realized, so that it becomes a potential material for effectively inhibiting the occurrence and development of tumor.

The present invention belongs to the technical field of cofferdam construction control, and specifically discloses a deep-water bare rock geological bottomless double-wall steel cofferdam sinking construction control method, the method comprising: collecting bare rock characteristic data and water body characteristic data of the construction area, and collecting information of the cofferdam, the information being size, shape, weight and surface roughness; confirming the auxiliary sinking mode switching point and confirming the starting construction time period; real-time monitoring of the state information during the sinking process, making a sinking adjustment judgment, and when the judgment result is adjustment, confirming the current adjustment sinking information, and when the judgment result is no adjustment, continuing to execute the sinking; controlling the steel cofferdam sinking construction process, and returning to the previous step while implementing control measures until the cofferdam is installed. The present invention can fully grasp the hydrological characteristics and changes of the construction waters, and at the same time realizes multi-link linkage control during the sinking adjustment, greatly improving the construction efficiency and construction accuracy of the cofferdam.

The invention relates to the field of integrated circuit packaging, in particular to a preparation method of copper microspheres and a bonding material. The preparation method of the copper microspheres comprises the following steps: preparing a copper source dispersion liquid containing copper particles and a light curing agent; the container is sequentially filled with first bearing liquid, second bearing liquid and third bearing liquid, a copper source bearing phase is prepared, the viscosity of the first bearing liquid is larger than that of the second bearing liquid, and the viscosity of the second bearing liquid is larger than that of the third bearing liquid; dripping the copper source dispersion liquid into the copper source bearing phase to prepare a composite dispersion phase; carrying out photocuring treatment on the composite dispersed phase, and carrying out solid-liquid separation to prepare composite particles; and sintering the composite particles to prepare the copper microspheres. According to the preparation method of the copper microspheres, the copper particles can be uniformly suspended in the copper source bearing frame, and the copper microspheres which are uniform in particle size distribution, high in roundness and high in density can be obtained after light curing treatment and sintering treatment.

The invention relates to the technical field of tissue repair materials, and particularly discloses a porcine tendon decellularized material as well as a preparation method and application thereof. The preparation method of the pig tendon decellularized material disclosed by the invention specifically comprises the following steps: sequentially carrying out repeated freezing and thawing treatment, treatment with a TritonX-100 solution with the concentration of 0.5 v / v% to 1.5 v / v%, treatment with a SDS solution with the concentration of 0.5 wt% to 1.5 wt%, treatment with a TritonX-100 solution with the concentration of 1.5 v / v% to 3 v / v%, treatment with a sodium deoxycholate solution with the concentration of 2 wt% to 3.5 wt%, treatment with a DNaseI enzyme solution with the concentration of 50 U / mL to 150 U / mL, treatment with a 100% isopropanol solution, and freeze-drying, so as to obtain the pig tendon decellularized material. Through the preparation method, the pig-derived tendon decellularized material prepared by the application has relatively low content of DNA and has excellent mechanical properties.