430results about How to "Accurately control the dosage" patented technology

The invention relates to the field of cell culture technologies, and in particular to a full-automatic intelligent cell culture device and a control method thereof. The cell culture device comprises a controller, a first regulating mechanism, a second regulating mechanism, a third regulating mechanism, a culture shelf, a first control door, a second control door, a first pipetting mechanism, a second pipetting mechanism, a waste liquid collection mechanism, a bottle opening/closing mechanism and a liquid adding mechanism; and at least three cavities, which include a keeping cavity, a transition cavity and a pre-heating cavity, are arranged in a storage cavity. The culture device provided by the invention is convenient, rapid and precise in liquid replacing and has no influence on cell growth; and moreover, the culture device is convenient for pre-heating and is relatively high in pre-heating speed.

The invention discloses a standard reaching to ground surface water grade IV water urban sewage treatment process, which comprises the following treatment steps that the urban sewage is subjected to pretreatment so as to remove sand, stone and big particle materials in the sewage; after the pretreatment, different-point water feeding is performed to a pre-denitrification and anoxic pool; outlet water subjected to pre-denitrification sequentially passes through an anaerobic pool, the anoxic pool, an aerobic pool, a secondary sedimentation tank, a magnetic or sand loading flocculation deep dephosphorization settling pool and a reaction unit for sterilizing and oxidizing rest organic matters and improving dissolved oxygen in water, and is discharged after the standard reaching; mud water in the secondary sedimentation tank flows back to the pre-denitrification pool; mud water in the aerobic pool flows back to the anoxic pool; a carbon source can be additionally fed into the anoxic pool; the preferable carbon source and the carbon source precise control mode are favorable for the target realization; the problem of the conventional grade IV water standard reaching is solved through oxidization, sterilization and oxygen charging measures. The process has the advantages that the multiple regions are used for reasonably allocating the inlet water; the carbon source is sufficiently utilized; the sludge age is more reasonable; various conventional problems and the practical problem that the grade IV water standard is difficult to reach are solved; each outlet water index is enabled to stably reach the grade IV water standard.

A slab continuous casting crystallizer protection slag automatically adding device, pertaining to the field of continuous casting process equipment, includes a large hopper, electric valves, a feeding tube, a small hopper, a screw feeder, a two-dimensional movement mechanism and a base. The device uses gravity to fall material from height, so that the large hopper is far away from the crystallizer mouth, to increase storage amount and allow long time of continuous work; the small hopper with small size, the screw feeder and the two-dimensional motion mechanism are reasonably installed at the intermediate tanker flank nearby the crystallizer to avoid the obstruction to the observation and operation of workers because the device is mounted in front of the crystallizer; the precise control of the feed amount can be achieved by the screw feeder; the conveyer tube is totally enclosed, which avoids slag leakage and dust emission; orthogonal coordinate type two-dimensional motion mechanism can realize a larger area of protection slag uniform spreading, which adapts to different sizes of slabs and billet production; automatic uniform slag adding is achieved, billet surface quality can be improved and the labor intensity of workers is reduced.

The invention discloses an otolaryngological medicine sprayer convenient to operate. The medicine sprayer comprises an outer cylinder and an injection cylinder. The injection cylinder is sleeved withthe outer cylinder, scale lines are installed on a position, located on the injection cylinder, the outer wall of the outer cylinder; the left side of the injection cylinder is communicated with a discharging pipe, and the discharging pipe is fixedly connected with the inner wall of the outer cylinder; a rubber soft pipe is communicated with the left side of the discharging pipe located on the left side of the outer cylinder, and the left side of the rubber soft pipe is communicated with an atomizing spray head. The medicine sprayer is provided with a piston cylinder and the scale lines, by observing the scale lines, the medicine applying content is accurately controlled; the medicine sprayer is provided with an LED lamp bead and a battery box, provides sufficient illumination when applying the medicine, and is convenient for medical workers to find a disease position accurately; the medicine sprayer is provided with a reset spring and a moving rod, achieves automatically supplementingmedicine liquids into the injection cylinder, and is convenient to apply the medicine many times and convenient to operate; the medicine sprayer is provided with the rubber soft pipe and a screw rod,bends the rubber soft pipe through the screw rod, adjusts the angle of the atomizing spray head, and is convenient to adjust the angle of applying the medicine.

The invention relates to the crucible manufacturing field and is a process for producing an arc quartz crucible by vacuum plus coating, equipment, products thereof. The invention solves the problems that the crucible manufacturing process in the prior art can not solve the operating requirements of long time, high temperature, and high purity of the quartz crucible, a uniform high purity quartz layer can not be formed in the vacuum state by uniform spraying, the layered spraying can not be accurately and timely carried out, and the like; therefore the process and the equipment for producing the arc quartz crucible by vacuum plus coating are provided; the quartz sand is poured into a vacuum mould to shape a prebuilt shape which is put into a founded chamber; a vacuum pump is started and the temperature is controlled, and then the melting and preheating begin; by controlling two hoppers of a double-hopper charging machine, the high-purity quartz sand is sprayed into the quartz crucible in the process of melting, and then mixing spraying coating is sprayed; the vacuum pump is closed during keeping the temperature. The quartz crucible produced by the process and the equipment of the invention has strong non-deformability of long time and exhaustion resistance in high temperature and can be used for long time.

The invention discloses super-retarding concrete and relates to the technical field of building materials. According to the key pint of the technical scheme, the super-retarding concrete comprises thefollowing ingredients (by weight): 150-190 parts of water, 320-360 parts of cement, 635-675 parts of sand, 920-1140 parts of cobblestone, 65-95 parts of an admixture A, 92-120 parts of an admixture B, 37-59 parts of gypsum, and 5.5-8.3 parts of an additive. The additive comprises the following ingredients (by weight): 12-16 parts of a retarder and 38-52 parts of a polycarboxylate superplasticizer. The admixture A comprises fly ash, and the admixture B comprises mineral powder. The retarder is composed of sodium thiosulfate, glycerol and sodium tripolyphosphate according to the mass ratio of 1-3: 2.4-3.5: 2.3-3.2. The problem that concrete's short setting time and low long-term strength are hard to meet the requirement of prolonging the setting time of concrete and guaranteeing long-term strength is solved. By using the retarder and the polycarboxylate superplasticizer cooperatively, the setting time of concrete can be prolonged, and the concrete can have high long-term strength.

The invention relates to the technical field of microneedle injection of cutaneous penetration, in particular to a microneedle injection bullet, a manufacturing method thereof and a microneedle injection device. The microneedle injection bullet comprises a microneedle array thin film and a substrate. The microneedle array thin film comprises a thin film substrate and a microneedle array on the front face of the thin film substrate. The substrate is provided with a through hole array aligned to the microneedle array. The thin film substrate of the microneedle array thin film is fixed to the substrate. Each microneedle of the microneedle array is embedded into a through hole of the through hole array. The microneedle injection device matched with the microneedle injection bullet comprises the microneedle injection bullet and a microneedle propelling device. The microneedle propelling device separates the microneedles of the microneedle array from the microneedle array thin film and presses the microneedles into skin. The microneedle injection device has the advantages that when the microneedle injection bullet is used for injection, and the microneedles are separated from the microneedle array thin film, so that the microneedles completely enter the skin, medicine contained in the microneedles is completely dissolved and released, and the purpose of precisely controlling the microneedle administration dosage is achieved.

The invention discloses a method of generating 1,2,4-butantriol by the in vitro enzyme reaction and application thereof, and belongs to the technical field of bioengineering. The method provided by the invention comprises the following steps: respectively constructing genetically-engineered bacteria of over-expressed D-xylonic acid anhydrase genes, 2-keto acid decarboxylase genes and alcohol dehydrogenase genes; after carrying out fermentation cultivation on the obtained genetically-engineered bacteria, crushing thalli by ultraviolet waves; collecting crude enzyme fluid; and after carrying out mixed adjustment on concentration of D-xylonic acid anhydrase, 2-keto acid decarboxylase and alcohol dehydrogenase, adding a reaction substrate to synthesize 1,2,4-butantriol. The method provided by the invention realizes synthesis of 1,2,4-butantriol in vitro by controlling the enzyme reaction and using D-xylonic acid as the raw material and has the characteristic of good convenience for enlarging production; and the enlarged yield can reach 5.98g/L.

The invention discloses an active carbon nanofiber and a preparation method thereof. The preparation method comprises the following steps of: by taking polyacrylonitrile as a carbon source, N,N-dimethylformamide as a solvent and phosphorous acid as an in-situ activator, mixing a certain amount of polyacrylonitrile and phosphorous acid (H3PO3), dissolving the mixture in N,N-dimethylformamide to form precursor liquid; preparing a precursor fiber by virtue of an electrostatic spinning method; and carbonizing in the presence of a high-temperature inert gas so as to obtain the active carbon nano fibers with high specific surface area and high porosity. The specific surface area of the active carbon nanofiber is within 580-710m<2>/g, the pore volume of the active carbon nanofiber is within 0.20-0.55cm<3>/g, and the active carbon nanofiber can serve as an excellent-performance catalyst, a catalyst carrier, a supercapacitor electrode and the like.

The invention relates to a high-frequency induction brazing method for the connection of a deep cavity inner conductor of a coaxial transmission line. The coaxial transmission line consists of an inner conductor and a hollow outer conductor. The inner conductor is connected with two conductors to form a T shape or an L shape and the brazing method comprises the following steps: the connection ends of the two conductors are respectively provided with a threaded hole and a screw rod; a tool withdrawal groove at the joint of the threaded hole and the screw rod is provided with welding wires or coated with solder pastes; and the two conductors are screwed to lead an induction coil to be sleeved at the end joints of the deep cavity inner conductor or the joints between a supplementary conductor and the inner conductor. The welding conditions are as follows: the power, power rate and heating and electrifying time of a high frequency generator are respectively 5KW, 30-60 percent and 6-80 seconds. In the induction heating brazing, the local temperature of the weld joint of a workpiece can meet the requirement of the brazing temperature rapidly and solders are spread evenly. Compared with the integrative heating method, the heat absorbed by the workpiece has small heat input and centralized heat. The high-frequency induction brazing method utilizes the internal thermal conductance of the workpiece to cool water or assist water cooling, thereby rapidly realizing the brazing connection of the connection ends and high quality of weld seams.

The invention discloses a seawater coagulation turbidity removing system. With existing seawater purifying apparatuses, when sea water quality fluctuation is large, the quality of obtained water is hard to satisfy the requirement of subsequent production processes. The invention aims at solving the problem. The system comprises a raw water pump communicating with raw seawater, a pipeline mixer, a flocculating agent dosing pump, a coagulant aid dosing pump, a sludge discharging tank, a coagulative precipitating apparatus, and a PLC controller. The raw water pump, the pipeline mixer, and the coagulative precipitating apparatus are sequentially connected by using pipelines. An input water detecting device is arranged on the connecting pipeline between the raw water pump and the pipeline mixer. A discharged water turbidity sensor is arranged on a water outlet of the coagulative precipitating apparatus. The flocculating agent dosing pump, the coagulant aid dosing pump, the input water detecting device and the discharged water turbidity sensor are respectively connected to the PLC controller. With the system provided by the invention, the agent dosage can be precisely controlled according to the turbidity variation of the raw seawater. Therefore, quality of treated seawater can satisfy the requirement of subsequent production processes. The operation of the system is simple, and the automaticity of the system is high.

The invention discloses an ammonification anthropomorphic inspection type intelligent control system for condensed water in a once-through boiler and a control method. The intelligent control system comprises a flowmeter for acquiring real-time flow Q of a condensed water pump, a first conductivity meter, a second conductivity meter, a third conductivity meter, a DCS controller, and an alternating-current frequency converter which is connected with the DCS controller and a dosing metering pump respectively and is used for receiving a rotating speed frequency signal sent by the DCS controller and adjusting the frequency of the rotating speed of a motor of the dosing metering pump. The ammonification anthropomorphic inspection type intelligent control system for the condensed water in the once-through boiler avoids the hysteretic nature and the non-timeliness which are caused by manual adjustment, saves lots of labor cost and realizes stable and precise control over the pH value of the condensed water in the once-through boiler.

The invention relates to the field of disease and pest control, and provides a green and safe disease and pest control method. Staging control is carried out according to different growth periods of plants. The specific control sequences and steps are as follows: (1), disease and pest control in the early stage comprises: control on damping-off, sheath blight and stubby root nematode before soil is not cultivated, and control on pests having relatively high mobility or needing adults to lay eggs and hatch, such as locusts, armyworms and moths, before plants are planted; (2), disease and pest control in seedling raising and seedling stages comprises: selection and use of disease-resistant varieties and health seedlings, disinfection of seeds and substrates, and control on whiteflies, flea beetles and cutworms in the seedling stage; and (3), disease and pest control in field planting and after field planting comprises: environmental management, water and fertilizer management, and adoption of different botanical fungicides and methods for different diseases and pests. Besides, the invention specifically discloses specific disease and pest control methods of Chinese cabbages, tomatoes, strawberries and hami melons. The green and safe disease and pest control method in the invention has the benefits that: a disease and pest control system is formed; and the method is wide in application range, good in effect and free from pesticide residue.

The invention relates the hot melt adhesion technology, comprising the following steps: a heat composite; b cutting; c stitching; d up-stripping and checking; e heat pressing; f checking. The technology can separately control temperature, press and time, has no solvent and environmental pollution; its binding power is ten times than that of pressure-sensitive adhesive; the technology can accurately control the quantity, position and shape of adhesive material; the technology has fast curing speed, short adhesion time; the product made with the technology has advantages of high strength and good property.

The invention relates to a medical appliance for treating wound surfaces, in particular to an atomization administration and intermittent vacuum sealing drainage (VSD) device for wound surfaces, which comprises a coating material, a drainage tube and a negative pressure source, wherein one end of the drainage tube, which is provided with a side hole, is inserted into the coating material, and the other end of the drainage tube is connected with the negative pressure source. The device provided by the invention is characterized by also comprising an ultrasonic atomizer and an atomized gas introducing tube, wherein one end of the atomized gas introducing tube is connected with the ultrasonic atomizer, and the other end of the atomized gas introducing tube, which is provided with a side hole, is inserted into the coating material. The VSD technology is used by the device for forming a relatively sealed space on a wound surface, and ultrasonic atomized gas is injected between every two times of VSD, so that the wound surface is in a wet, low-oxygen and weakly acidic environment, thereby being favorable for repairing the tissues of the wound surface.

The invention provides a microfluidic chip used for nucleic acid amplification detection and a detection method. The microfluidic chip comprises a substrate layer, a cover plate layer and a reversingvalve, wherein the cover plate layer is provided with a sample inlet, a purification and concentration chamber, a waste liquid outlet, a premixing chamber through hole and an outlet through hole; thesample inlet is connected to the waste liquid outlet and the premixing chamber through hole respectively after passing through the purification and concentration chamber through a flow channel; a porous material embedded with immunomagnetic beads is preset in the purification and concentration chamber; the reversing valve is arranged on a flow channel on the outlet side of the purification and concentration chamber to control a liquid in the purification and concentration chamber to flow to the waste liquid outlet or the premixing chamber through hole; the premixing chamber through hole is used for adding reactants to be mixed with the liquid from the purification and concentration chamber; the substrate layer is provided with a mixing flow channel and a constant-temperature amplificationchamber with a transparent area; and the premixing chamber through hole is connected with a constant-temperature amplification chamber through a mixing flow channel. By using the chip, purification, concentration, constant-temperature amplification and real-time fluorescence detection of nucleic acid can be realized in one step; and detection results of one or more target objects can be rapidly, simply, conveniently and reliably obtained.

The invention discloses a construction device capable of blanking mixed materials of block-shaped waste concrete, which comprises a row type hopper, a chute and ear plates. Hoppers are connected through the ear plates to form the row type hopper, lugs are arranged at the upper portion of the row type hopper and connected with steel wire ropes of a lifting device, and a drawer type baffle is arranged at the lower portion of the row type hopper. The chute is connected with the bottom of the row type hopper in hanging mode through round hinges, the inclined angle of the chute can be changed through stretching out and drawing back of adjusting ropes, and the lower end of the chute is provided with a lifting type baffle to control the blanking. The block-shaped waste concrete or mixed materials formed by cast-in-place concrete and the block-shaped waste concrete are filled in the row type hopper, the number of the hoppers can be determined accordingly to casting requirements and lifting capacity, and casting materials are accurately conveyed to casting operation places through the construction device. The construction device capable of blanking the mixed materials of the block-shaped waste concrete is simple in structure, flexible in use, convenient in installation and dismounting, safe in operation, low in cost and capable of playing a positive role on operation of the project forpromoting the block-shaped waste concrete in large area.

The invention relates to a rotary iron ore analyzing device, which belongs to the field of chemical analysis equipment of iron ores. A weighing platform (4), a heating platform (7) and a cooling platform (6) are at least arranged at the periphery of a rotary workbench, wherein a flask (3) is placed on one platform of the rotary workbench; an arc-shaped left clamping arm (14) and an arc-shaped right clamping arm (15) are arranged at two sides of the flask (3) and are connected with a clamping arm driving mechanism; the clamping arm driving mechanism is used for driving the left clamping arm (14) and the right clamping arm (15) to swing oppositely so as to be tightly clamped and also used for lifting the flask (3) so as to enable the bottom of the flask (3) to be apart from the rotary workbench; a fixing workbench (1) is fixed above the flask (3); a plurality of reagent dropping bottles (8) in which different indicators are contained are fixed on the fixing workbench (1); the flask is always positioned below each reagent dropping bottle; and the flask does not need to be moved during the dropping of various reagents and the adding of water. The rotary iron ore analyzing device realizes improvement in analysis detection efficiency, and is high in degree of automation as well as safe and convenient to operate.

The embodiment of the invention provides a vehicle cleaning method and device, electronic equipment and a storage medium, which aim to judge the stain level of the peripheral surface of a vehicle, determine a proper cleaning mode according to the stain level, and clean the peripheral surface of the vehicle according to the determined cleaning mode. Through selection of the cleaning mode, accuratecontrol over the water consumption and the cleaning foam consumption can be achieved, the cleaning frequency can be controlled through comparison of the stain level and the preset stain level requirement by setting the proper preset stain level requirement, and resource waste is avoided.

The invention provides an online gas detection method used for an all vanadium flow battery liquid storage tank. The liquid storage tank is provided with an online detection system, and a gas in the tank is detected and analyzed when an inert gas is introduced to dispel air in the liquid storage tank to obtain component information of the gas in the liquid storage tank in order to accurately control the use amount of a protection gas; and the state of the gas in the liquid storage tank is detected in real time in the battery running process, and the inert gas is timely introduced when oxygen and other electrolyte ion-sensitive gas components are detected in order to protect and keep comprehensive valence balance of ions in the electrolyte. The gas in the all vanadium flow battery liquid storage tank is detected and analyzed in an online manner through adopting the online gas detection system, so the use amount of the protection gas is accurately controlled, and waste of the production gas is avoided, thereby the building cost of all vanadium flow battery energy storage power stations is reduced, the vanadium battery is well protected, the running efficiency of the battery is improved, the service life of the battery is prolonged, the running cost is reduced, and the running economy of the energy storage power stations is improved.

The invention belongs to the field of wastewater treatment technology and specifically relates to a Fenton's reagent oxidation wastewater treatment method and a device thereof. Wastewater to be treated enters a 1-stage pH regulating tank, and concentrated acid is extracted from a concentrated acid storage tank through an acid adding pump to carry out first-step pH regulation; an effluent from the 1-stage pH regulating tank enters a 2-stage pH regulating tank, and diluted acid is extracted from a diluted acid storage tank through an acid adding pump to carry out second-step pH regulation; an effluent from the 2-stage pH regulating tank enters an oxidation reaction tank, hydrogen peroxide and ferrous sulfate are added into an inlet of the oxidation reaction tank through a dosing pump, and a reaction is conducted after mechanical agitation or air agitation and mixing of the materials and wastewater; after pH regulation of an effluent from the oxidation reaction tank is achieved by addition of alkali, the effluent enters a sedimentation tank, and the effluent from the oxidation tank undergoes solid-liquid separation in the sedimentation tank and finally discharging is followed. Dosage of the oxidizer is controlled precisely so as to avoid less or excessive dosage of the drug. It is ensured that the treatment effect is stable, and treatment cost is effectively reduced. Degree of automation is high, and manual operation difficulty is reduced.