Cutting tool for drilling and chamfering steel rail and machining technology thereof

The invention discloses a cutting tool for drilling and chamfering a steel rail and a machining technology thereof. The cutting tool comprises a cutting tool body, wherein the cutting tool body comprises a first cutting edge, a second cutting edge and a third cutting edge; the first cutting edge is used for drilling the steel rail; the second cutting edge and the third cutting edge are used for chamfering the steel rail; the first cutting edge is positioned at the outermost end of the cutting tool body; the second cutting edge and the third cutting edge are arranged oppositely. The machining technology comprises the following steps of installing the cutting tool on a drilling machine, and positioning and fixing the to-be-machined steel rail; feeding the cutting tool, and drilling the steel rail through the first cutting edge; continuously feeding the cutting tool, and chamfering one side of the steel rail through the third cutting edge; retracting the cutting tool, and chamfering the other ...

A back arc frame for aircraft portable cabin skeleton

The utility model discloses a back arc frame for aircraft portable cabin skeleton, including back arc frame, frontal arc frame, well arc frame, left side section bar and right side section bar, left and right side section bar constitutes by two rectangle frames, and leaves the space between two rectangle frames, all be provided with two recesses on the terminal surface at back arc frame both ends, and the space of leaving is corresponding between the distance between two recesses and two rectangle frames, the utility model discloses all be provided with and control side section bar two corresponding recesses in the both sides of back arc frame for back arc frame all has two fixed connection departments with left and right sides side section bar, has guaranteed the stability of its connection effectively, reduces safe risk, in addition, the power of holding with a firm grip of back arc frame side section bar about to has been guaranteed to arch that the opening part of recess set up, the ...

Vertical scroll connects before five ribs

The utility model discloses a vertical scroll connects before five ribs, vertical scroll and coupling mechanism before five ribs, coupling mechanism is last to be provided with one another be the pilot hole for the mounting hole, and the mounting hole installs the baffle that is equipped with perpendicular to mounting hole hole axle inside, the both sides of baffle all are provided with concave -convex structure, and vertical scroll before one five rib respectively is equipped with to the both sides of baffle in the mounting hole, the vertical scroll all stretches out in the mounting hole before five ribs, the vertical scroll includes five floors and preceding vertical scroll before five ribs, the mounting hole is greater than the distance of floor apart from preceding vertical scroll apart from the distance at coupling mechanism edge, the utility model discloses the vertical scroll connects gradually before only need using vertical scroll connects before five ribs with a plurality of five ...

Coordinated distribution method and system for high-permeability photovoltaic intelligent power distribution area

The invention provides a coordinated distribution method and system for a high-permeability photovoltaic intelligent power distribution area, and the method comprises the steps: decomposing a power distribution network corresponding to the high-permeability photovoltaic intelligent power distribution area through a server, obtaining a plurality of power distribution areas, determining the load information corresponding to each power distribution area, determining the area cost corresponding to each power distribution area according to the load information and the total cost information; the server obtains energy type data corresponding to each power distribution area, and determines a newly added battery energy storage system and a soft open point unit in each power distribution area according to the energy type data and the area cost to obtain electric energy coordination data; obtaining coordination distribution information of the corresponding power distribution area according to the ...

A well arc frame for aircraft portable cabin skeleton

The utility model discloses a well arc frame for aircraft portable cabin skeleton, including well arc frame, frontal arc frame, back arc frame, left side section bar and right side section bar, the middle part of the left and right side section bar of well arc frame attach, arc frame reinforcement in being provided with in the circular arc of well arc frame, well arc frame forms closed polygon with well arc frame reinforcement, arc frame backup pad in installing in the polygon plane, all be provided with a plurality of in the well arc frame backup pad by the through -hole of well arc frame reinforcement mid point to the radiation of well arc frame, the utility model discloses well arc frame backup pad has been set up between well arc frame and well arc frame reinforcement to reach better supported effects, the power that receives on the arc frame during crisscross through -hole that sets up and circular arc hole can be shared in the well arc frame backup pad, be equipped with the rubber ...

Pneumatic suction type multifunction seeder

The utility model discloses a good pneumatic suction type multifunction seeder of ditching sowing effect, include: the frame sets up the mounted frame that is connected at the front end with tractor drive arrangement, sets up to be provided with walking round respectively in frame rear end both sides, between the two walking wheels of the rear end of frame all with be provided with a plurality of seed case of broadcasting, the seed case that broadcasts be connected with the air compressor who sets up in the frame through the trachea respectively the front end of frame is provided with rotary tillage cutter and rotary tillage transmission case, the rotary tillage transmission case is connected with tractor drive arrangement through the connecting axle the front end both sides of frame are provided with the disk coulter through axis of rotation respectively the both sides of frame are fixed respectively and are provided with the reason ditch ware of mutually supporting with the disk coulter ...

Handle mechanism of undercarriage of airplane

The invention relates to an undercarriage handle mechanism of an aircraft, and relates to the technical field of undercarriages of aircrafts. The device comprises a control box and a handle, a first elastic piece used for triggering the landing gear to be put down and a second elastic piece used for triggering the landing gear to be put away are arranged in the control box, a moving groove is horizontally formed in the top wall of the control box, the handle is arranged in the moving groove in a penetrating mode, and the bottom end of the handle is fixedly connected with a trigger rod through a connecting rod; the trigger rod is located between the first elastic piece and the second elastic piece and connected with the handle through the connecting rod, the trigger rod can make contact with the first elastic piece or the second elastic piece, a mounting plate is horizontally arranged in the control box, a mounting groove is formed in the mounting plate, and the handle is arranged in the ...

Door of aircraft frame

The utility model discloses a door of aircraft frame, including confined metal door frame, metal door frame inner circle is provided with the flange, the flange is provided with the elasticity sealing strip with one side that the hatch door contacted, the elasticity sealing strip including set up in the installation basal portion of flange upper surface with set up in the sealing of installation basal portion upper surface, it is round that the cross section of sealing is cavity, there is the side seal strip that sidewise top stretches out the bottom of sealing. Highly being higher than of side seal strip sealing top 2 -3mm, the number of side seal strip be two and symmetry set up in the left and right sides of sealing, two the opening of side seal strip makes progress and the transversal loudspeaker form of personally submitting. The utility model discloses can well support door of aircraft to combine to reach good and stable sealed effect with door of aircraft.

Method for detecting acetone content through capillary electrophoresis method

The invention discloses a method for detecting acetone content through a capillary electrophoresis method. Compared with a conventional method, the method has the characteristics that test is performed under the required conditions that the voltage is 22KV and the external temperature of an instrument cannot exceed 20 DEG C; the pH value of a buffer solution which is used in the experiment process is 8, and the buffer solution is polypropylene glycol; before being detected, substrate yeast needs to be volatilized; separated capillary tubes are divided into two groups, namely a long-capillary group and a short-capillary group with the lengths of 8am and 5am; and in the hydrolytic electrophoresis process, the pH value of a coating is 3 to 5. The buffer solution can also be a phosphate buffer solution. During electrophoresis, an inorganic electrolyte and a neutral surfactant need to be added to inhibit adsorption of blood glucose. The method has the beneficial effects that bacterial strains ...

Method, apparatus, and electronic device for controlling display screen backlight, and storage medium

Embodiments of the present disclosure provide a method, an apparatus, and an electronic device for controlling a display screen backlight, and a storage medium. It is determined, with reference to an included angle between the electronic device and a preset direction and whether there is an object shielding an aperture in a call state, that the display screen backlight is adjusted to be on or off.

Integrated metal sleeve device with maintenance-free precision and clamping method thereof

The invention provides an integrated metal sleeve device with the maintenance-free precision and a clamping method thereof, relates to an integrated metal sleeve device of which the precision does not need to be regulated and maintained and the clamping method thereof, and belongs to the field of optical fiber perform manufacturing. The integrated metal sleeve device with the maintenance-free precision comprises main shaft connecting plates, stainless steel fixing bolts, two integrated metal sleeves, polyimide sleeves, positioning and locking screws, Teflon plug pins, Teflon adhesive tape, a glass rod, dial indicators, two servo motors and main shafts; the main shafts are installed on main shaft seats through bearings, the servo motors are installed on motor supports, the output shafts of the servo motors are connected with the main shafts, and the main shaft connecting plates are installed at the front ends of the main shafts; the stainless steel fixing bolts connect the main shaft connecting ...

Preparation of anti-influenza virus

The present invention discloses preparation of anti-influenza virus. The specific steps comprise: preparing target influenza virus antigen, selecting dog embryo allantoic cavity to carry out passage, retaining the allantoic fluid, carrying out high-speed centrifugation rotation for 0.5 h, removing the supernatant, and carrying out lower temperature preservation; extracting antibodies from yolk; rapidly adding to a sodium phosphate solution, and carrying out dilution; after completely stirring, carrying out high-speed centrifugation for at least 20 min; taking the precipitate liquid, and adding sodium chloride with a mass fraction of 100%; and drying, and standing, wherein the dog can not be a mongrel dog and must be a purebred dog, and the selected dog does not has any diseases, is 3-5 years old, and is not limited by sexuality. According to the present invention, the reactions are simple, the operation is convenient, the preparation method can be extended to other animals, the price is ...

Preparation method of anti-SARS (severe acute respiratory syndromes) coronavirus surface antibody

The invention discloses a preparation method of an anti-SARS (severe acute respiratory syndromes) coronavirus surface antibody, which specifically comprises the following steps of firstly screening the cells of an SARS coronavirus surface antigen under a requirement for vigorous stage of life activities; performing immunization injection; after immune response is generated, culturing fusion cells with a culture medium; 12 days later, screening positive clone cells, cloning positive cell strains, and screening out stable monoclonal antibody cell strains; putting the stable monoclonal antibody cell strains in a refrigerator overnight, and taking out and closing in an environment at 37 DEG C for 2 hours; adding into a carbonate buffer solution, and drying to obtain the anti-SARS coronavirus surface antibody. The fusion cells are cultured by an HCA process; after immune response, the fusion cells need to be fused under the effect of PRG. The preparation method disclosed by the invention has ...

Method for screening plant strains

The invention discloses a method for screening plant strains. The method comprises the following steps: acquiring samples, wherein the samples must be wet, and there must be plants on soil planted with the samples for at least three years before; carrying out enrichment culture, wherein a culture medium must contain abundant nutrition, and glycerol is an only carbon source of the culture medium; generating glyceric acid strains; adding glycerin, qualitatively detecting the carbon source to generate propanol strains; quantitatively analyzing for generating strains with high acetone output; and identifying the strains to obtain the plant strains with a high hereditary stability, wherein the enrichment culture is carried out under aseptic conditions while continuously uniformly shaking, and the strains are identified in a constant temperature shaking table. The method has the advantages of stable conditions, simple operation, high purity, and obtaining of high-conversion-rate mutant strains ...

Novel milling cutter blade and combined milling cutter disc

The invention discloses a novel milling cutter blade and a combined milling cutter disc, the novel milling cutter blade comprises a novel milling cutter blade, a first milling cutter disc and a second milling cutter disc, the first milling cutter disc and the second milling cutter disc are used for installing the novel milling cutter blade, and the first milling cutter disc and the second milling cutter disc are detachably connected through a fixing assembly; different milling cutters can be mounted on the first milling cutter disc and the second milling cutter disc, so that two procedures of finish milling and rough milling can be completed at the same time under the condition that the milling cutter discs and the milling cutters are not replaced, the machining time is greatly saved, the machining efficiency is improved, and through the design of the combined milling cutter discs, under the condition that rough milling is needed for multiple times, the machining efficiency is improved.

Fermentation technology of novel monomer compound

The invention discloses a fermentation technology of a novel monomer compound. The technology concretely comprises the following steps: culturing target strains, and screening the strains cultured in advance through a shaking fermentation method; carrying out high temperature sterilization, and adjusting the pH to be weakly acidic; and adjusting the mass ratio of C to N to be 30-50:80-95; introducing oxygen until a ratio of the volume of a fermentation liquid to oxygen in the fermentation process is 1.5:2.2; and fermenting until a mass fraction of dissolved oxygen is not lower than half of the initial mass ratio of the dissolved oxygen. In the whole fermentation process, the growth rate of strains cannot exceed 15%; paclitaxel strains are selected as a raw material; and an MTT method is used to carry out in-vitro biological activity screening. The compound has the advantages of stable condition, stable reaction, simple fermentation technology, convenient grasping, high purity and suitableness ...

Middle frame

The utility model discloses a middle frame, characterized by, including body, first location portion, second location portion, the left and right sides of body all is provided with circular -arc recess, the body is provided with strengthening rib and spread groove, first location portion and second location portion all are provided with the locating hole, body, first location portion, second location portion all cover and have the coating, a middle frame passes through the setting of body, first location portion, second location portion and circular -arc recess, it is more stable when makes middle frame be connected with other devices, firm, a middle frame is provided with strengthening rib and spread groove through the body, has increased middle frame's intensity, has improved middle frame's life, a middle frame is provided with the spread groove through the body, can directly be connected with other structures, uses a plurality of connecting device, furthest's resources are saved in having ...

Formula of Interstitial fluid for fermentation culture of chemical fertilizer

The invention discloses a formula of interstitial fluid for fermentation culture of chemical fertilizer. The solution is prepared from the following components: 2-10 parts of starch, 4-8 parts of sodium carbonate, 20-50 parts of potassium phosphate trihydrate, 5-10 parts of sodium hydrogen sulfate and 1-3 parts of yeast. The acid-base property of the interstitial fluid prepared according to the formula is slightly alkaline; and when the interstitial fluid is in use, the temperature needs to be kept at 33 DEG C, and pure oxygen is constantly fed in. The formula of the interstitial fluid disclosed by the invention has the beneficial effects that the generation of polysaccharide is effectively controlled, the formation of spores is promoted, and the yield of qualified products is relatively high.

Process for fermenting glucose oxidase

The present invention discloses a process for fermenting glucose oxidase. The process comprises the following specific steps: selecting Aspergillus niger as a starting strain for fermentation production of glucose oxidase, and carrying out an infrared mutagenesis treatment on the Aspergillus niger; screening to obtain high-yield strains; continuously carrying out a passage experiment 3-5 times on the high-yield strains to obtain strains with stable genetic characters; placing into a culture medium to culture; adopting a double-layer yarn membrane to carrying out dialysis; carrying out conventional fermentation for at least 24 h; transferring into a fermentation tank, and sealing for at least 12 h; and carrying out the passage experiment 3-5 times, wherein the volume of the fermentation tank and the fermentation substance are the same, the volume can not exceed 10% of the volume of the fermentation substance, and maltose can be adopted to replace the Aspergillus niger. The process has the ...

Method, Apparatus, and Electronic Device for Controlling Display Screen Backlight, and Storage Medium

Embodiments of the present disclosure provide a method, an apparatus, and an electronic device for controlling a display screen backlight, and a storage medium. It is determined, with reference to an included angle between the electronic device and a preset direction and whether there is an object shielding an aperture in a call state, that the display screen backlight is adjusted to be on or off.

Method for preparing antimony pentoxide hydrosol and dry powder thereof by using composite stabilizer

The invention discloses a method for preparing antimony pentoxide hydrosol and dry powder thereof by using composite stabilizer. The method comprises the following steps: adding the saline solution composed of triethanolamine and phosphoric acid to antimony pentoxide; heating and refluxing at a certain temperature rise rate; adding hydrogen peroxide drop by dropping at a constant rate to oxidize into colloid; filtering the reacted colloid to obtain the antimony pentoxide hydrosol having higher purity; directly evaporating and concentrating the obtained dilute hydrosol to obtain 40% antimony pentoxide hydrosol; and further drying the high-concentration antimony pentoxide hydrosol at 95 to 100 DEG C to obtain the dry powder of antimony pentoxide hydrosol. In the presence of triethanolamine phosphate as the stabilizer, the obtained colloid has the advantages of fine grain, good monodispersity and regular topography; the colloid, hydrosol and dry powder of antimony pentoxide have the advantages ...

Information synchronization method and device for preventing Wi-Fi squatter of master and slave devices

The embodiment of the invention discloses an information synchronization method and device for preventing network squatting of WiFi of a master device and a slave device, and the method comprises the steps: determining whether a current network device to be connected to the Internet has a network access right or not in a Mesh network comprising a master device and a plurality of slave devices; under the condition of determining that the current network equipment to be connected to the Internet has the network access authority, acquiring the authority level of the current network equipment to be connected to the Internet; according to the permission level, matching and determining a corresponding target network connection rule from a plurality of preset network connection rules for preventing network squatting, so as to permit the current network equipment to perform network connection based on the target network connection rule; target device information of the current network device connected ...

Method for breeding DHA strains through compound mutation

The invention discloses a method for breeding DHA strains through compound mutation. The method comprises the following steps: selecting initial target strains; planting the strains on a fresh inclined plane; preparing a bacterial suspension, and maintaining the pH of the suspension alkaline; carrying out ultraviolet mutagenesis and chemical mutagenesis of the bacterial suspension; and separating through a flat plate for colony enrichment; screening the obtained strains, and instantly carrying out low temperature preservation of mutating variant strains, wherein a certain concentration of KH2PO4 in a culture medium; and in an inclined plane preservation culture medium, a mass concentration ratio of glucose to a calcium carbonate solution is 5:1. The method has the advantages of stable condition, simple operation, high purity, and obtaining of high-conversion-efficiency variant strains.

In-vitro paclitaxel analysis model

The invention discloses an in-vitro paclitaxel analysis model. The operation method comprises the following specific steps: performing precision weighing on objective paclitaxel, and soaking the paclitaxel in warm water in a waterproof mode; performing ultrasonic treatment for three minutes until the paclitaxel is completely dissolved; adding a stock solution, wherein the mass percent of the stock solution is required to be not less than 90 percent of that of methanol; magnetically stirring at constant temperature for at least half an hour; rotating, and hydrating the film completely; stirring in an ice bath; and taking the sediment and drying. In the ice bath, dried powder needs to be attached to an inner wall in advance. The in-vitro paclitaxel analysis model has the beneficial effects of simplicity in operation, easily controllable size, high yield, scientificity and feasibility.

A roof beam for aircraft cable suspension device

The utility model discloses a roof beam for aircraft cable suspension device, including girder, auxiliary girder chain sling and auxiliary girder, the auxiliary girder passes through auxiliary girder chain sling symmetry is installed the both ends of girder, be provided with a plurality of through -holes that are used for adjusting hoist and mount interband distance on the auxiliary girder, install on the through -hole and break out, the girder both ends are provided with the lug, the auxiliary girder chain sling articulates on the lug, be provided with hoisting point no. 1 and hoisting point no. 2 on the auxiliary girder, respectively with the both ends of auxiliary girder chain sling are connected. The utility model discloses messenger's aircraft cable suspension device can be applicable to the hoist and mount of different types of machines, and simple structure, has reduced aircraft cable suspension device's fund input.

Converter

According to the converter provided by the invention, the power device in the main circuit is arranged on the radiator, and the preset intermediate potential of the side, with the highest voltage, of the main circuit is fixed on the radiator, so that the maximum voltage of the main circuit to the radiator is smaller than a preset value, the converter can meet insulation specifications, the insulation requirement on the power device is reduced, and the service life of the converter is prolonged. And devices with lower insulation grades can be selected, so that the cost of the converter is reduced and the volume of the converter is reduced.

Wind turbine generator yaw system, control method and device thereof and medium

The invention relates to the field of wind power generation, and discloses a wind turbine generator yaw system, a control method and device thereof and a medium, the wind turbine generator yaw system comprises a wind direction detection unit, a controller, a main communication unit, a DO communication unit and a yaw driving unit, and after the main communication unit breaks down, an instruction is sent through the DO communication unit; the wind direction detection unit is connected with the controller to obtain wind direction information and send the wind direction information to the controller so that the controller can control a yaw system of the wind turbine generator according to the wind direction information. The controller is connected with the yaw driving unit through the main communication unit and the DO communication unit, generates a yaw instruction according to the wind direction information, judges whether the main communication unit works normally or not, and sends the yaw ...

Airtightness detection device for aircraft fuel tank covering cap

The invention relates to an air tightness detection device for an aircraft fuel tank covering cap, and relates to the technical field of air tightness detection of fuel tank covering caps. The detection mechanism comprises a detection assembly, the detection assembly comprises a controller, a first pressure sensor, an air pump, an air inlet pipe and an electromagnetic valve, the controller and the air pump are both fixed to a frame plate, the controller is electrically connected with the air pump, one end of the air inlet pipe is connected with the air pump, and the other end of the air inlet pipe is communicated with a detection box; the electromagnetic valve is arranged on the air inlet pipe and electrically connected with the controller, and the first pressure sensor is electrically connected with the controller and used for detecting the pressure in the detection box. The device and the method have the effect of improving the detection effect of the air tightness of the covering cap ...

Method for converting dihydroxyacetone

The invention discloses a method for converting dihydroxyacetone. The method comprises the following steps carried out under optimal conversion conditions: converting by adopting a microbiological method, wherein the concentration of a product is always controlled to be smaller than 50g/l during fermentation, the reaction temperature during testing is 28-29 DEG C, the best pH value is 3.5-4.5, nitroglycerin is required to be added after thalli are completely converted into dihydroxyacetone, and the condition that the thalli are completely converted into dihydroxyacetone is based on the activity of glycerol dehydrogenase and is realized when the activity of glycerol dehydrogenase is completely reduced to zero; irradiating by adopting far-infrared laser until the concentration of glycerol is reduced to half the initial concentration. A buffer solution can be a phosphate buffer solution; during colouredness detection, a used mixture is a mixture of a Fehling reagent and diphenylamine which ...

A left side section bar for aircraft portable cabin skeleton

The utility model discloses a left side section bar for aircraft portable cabin skeleton, including left side board, right side board, frontal arc frame, well arc frame and back arc frame, the front end of left side board and right side board is connected through the frontal arc frame, and the middle part of left side board and right side board is connected through well arc frame, and the rear end of left side board and right side board is connected through back arc frame, the left side board is equipped with inside and outside two -layer rectangle frame, all is provided with a plurality of strengthening ribs in the inside and outside two -layer rectangle frame, the upper and lower surface that left side board and frontal arc frame meet the upper and lower framework of the outer rectangle frame of department all is provided with the recess, the lower framework bottom surface of left side inboard layer rectangle frame is provided with the draw -in groove, the utility model discloses a left ...

Intelligent monitoring method and system for combustion safety of furnace baking gas of refining furnace

The invention discloses a refining furnace baking gas combustion safety intelligent monitoring method which comprises the following steps: S1, before a refining furnace is baked, installing a gas combustion safety detection unit adapted to the front end of an oxygen lance; s2, extending an oxygen lance and a coal gas combustion safety detection unit into the refining furnace, and synchronously acquiring a flame color image and atmosphere concentration in the refining furnace in a time period from coal gas ignition to flameout; s3, the collected flame color image is processed so as to judge the flame ignition state and monitor the gas combustion flame state; s4, different alarm rules are set for the flame ignition state, the gas combustion flame state and the atmosphere concentration at different oven baking moments, and if abnormity occurs, an alarm is given; and if normal, ending the detection. The invention further discloses an intelligent monitoring system for the combustion safety of ...

Method for preparing antimony pentoxide hydrosol and dry powder thereof by using composite stabilizer

The invention discloses a method for preparing antimony pentoxide hydrosol and dry powder thereof by using composite stabilizer. The method comprises the following steps: adding the saline solution composed of triethanolamine and phosphoric acid to antimony pentoxide; heating and refluxing at a certain temperature rise rate; adding hydrogen peroxide drop by dropping at a constant rate to oxidize into colloid; filtering the reacted colloid to obtain the antimony pentoxide hydrosol having higher purity; directly evaporating and concentrating the obtained dilute hydrosol to obtain 40% antimony pentoxide hydrosol; and further drying the high-concentration antimony pentoxide hydrosol at 95 to 100 DEG C to obtain the dry powder of antimony pentoxide hydrosol. In the presence of triethanolamine phosphate as the stabilizer, the obtained colloid has the advantages of fine grain, good monodispersity and regular topography; the colloid, hydrosol and dry powder of antimony pentoxide have the advantages ...

Sample preparation method for proteomic analysis

The invention relates to a sample preparation method for proteomic analysis. Specifically, the method comprises the following steps: reducing and alkylating proteins in a sample to be detected, addingacetone to precipitate the reduced and alkylated proteins, redissolving the proteins, adding the redissolved protein solution to a 96-well plate with a PVDF membrane, and carrying out enzymolysis onthe 96-well plate with the PVDF membrane. The sample obtained according to the method of the invention can be used for proteome analysis.

Torque calculation method and device of three-phase motor

The invention discloses a torque calculation method and device for a three-phase motor. The torque calculation method comprises the following steps: sampling a pulse width modulation signal of a power switch device corresponding to the three-phase motor within a preset time to obtain a sampling signal; calculating the duty ratio of the sampling signal in the preset time, and obtaining the phase current corresponding to the three-phase motor when the sampling signal is at the middle point of the preset time; calculating the equivalent three-phase voltage of the three-phase motor in the preset time according to the duty ratio of the sampling signal in the preset time, the direct-current bus voltage of the three-phase motor and a first preset formula; and calculating the equivalent torque of the three-phase motor in the preset time according to the rotating speed of the three-phase motor, the phase current corresponding to the three-phase motor when the sampling signal is at the intermediate ...

Method for analyzing and detecting dihydroxyacetone

The invention discloses a method for analyzing and detecting dihydroxyacetone. The method is specifically characterized by comprising the steps of firstly, carrying out qualitative analysis on dihydroxyacetone by using a thin-layer chromatography, and repeatedly testing; then, converting dihydroxyacetone into a derivative which has relatively high thermal stability and can be still not changed at the temperature of about 80 DEG C; detecting at the temperature of 250 DEG C, and meanwhile, gradually increasing column temperature to 320 DEG C from 15 DEG C within an hour; taking nitrogen gas as carrier gas by adopting the split ratio of (10-20): 1; finally, carrying out derived separation and detection on a moving phase through trimethyl ethanol as a wavelength treatment solution. The concentration of trimethyl ethanol is 5% to 10%; during test, used heat is supplied by heat generated through the oxidation of lactose oxidase. The method has the beneficial effects that the conditions are stable ...

Weather-resistant ASA (acrylonitrile-styrene-acrylate) hot-bonding composite film and metal film-coated plate

The invention discloses a weather-resistant ASA (acrylonitrile-styrene-acrylate) hot-sticking composite film, which is characterized by comprising a PE (polyethylene) bottom layer, a glue layer and an ASA layer, the lower side of the SA layer is adhered to the upper side of the glue bottom layer, the lower side of the glue layer is adhered to the upper side of the PE layer, the glue layer is polyurethane two-component glue, and the ASA layer is made of polyurethane two-component glue. The invention further discloses a metal film-coated plate coated with the weather-resistant ASA hot-sticking composite film. The composite film and the film-coated metal plate can achieve the effects of high weather resistance, acid and alkali resistance, high decoration performance, safety, environment friendliness and low cost.

Ribbed joint head

The utility model discloses a ribbed joint head, characterized by, connect including first joint and second, first joint and second connect to be connected through circular -arc connecting piece, first joint is separated for first mounting and second mounting through the trompil, the second connects to be separated for third mounting and fourth mounting through the trompil, be provided with first fastener between first mounting and the third mounting, be provided with the second fastener between second mounting and the fourth mounting, first joint is provided with the recess, it is when a ribbed joint head makes ribbed joint head be connected with other devices, more stable, firmly, simultaneously, applicable in the connection of different specification rib spares, a ribbed joint head is provided with the fastener between through the mounting, can directly be connected with other structures, uses a plurality of connecting device, furthest's resources are saved in having avoided connecting ...

Pressure measurement's formula greasy dirt that connects soon separates interface arrangement

The utility model discloses a pressure measurement's formula greasy dirt that connects soon separates interface arrangement filters quick erection joint, greasy dirt separation, recovery to make up in an organic whole. Including the three: coupling part is installed fast to the first for with pressure detection system and the high -speed joint of being examined the school instrument, the second greasy dirt separates the part, is used for inserting the pressure source of pressure detection system promptly to the greasy dirt is separated to accessible nature mode, and the drain is discharged the spot under blowoff valve control, the third filters to collect the part, and waste oil that will be usable collects oily spigot joint with usable oil reclaiming under the control of album fuel tap after the metal filter core filters. The utility model discloses both can carry out the hydrops of pressure instrument and meter greasy dirt separation, can filter the recovery to recycling the medium again ...

Frame connects

The utility model discloses a frame connects, characterized by, connect including first joint, second, first joint and second connect to be connected through the connecting piece, the second joint is provided with mounting and extensible member, the mounting is provided with locating pin and a plurality of locating hole, the extensible member is provided with a plurality of locating holes, the cross -section length of mounting is greater than the cross -section length of extensible member, a frame connects connects the setting that is provided with mounting and extensible member through the second, is applicable to the connection of different specification frameworks, a frame connects connects through first joint and second and all is connected for dismantling with the connecting piece, when damages when arbitrary joint, wantonly the dismouting one of them, install new joint fast, consequently can furthest utilize the resource, avoid extravagant, a frame connects passes through the setting ...

Agricultural straw treatment and recycling device

The invention discloses an agricultural straw treatment and recycling device which comprises a treatment box, a smashing box is installed at the top of the treatment box, a feeding box is installed at the top of the smashing box, a feeding port is formed in the outer wall of one side of the feeding box, a first treatment mechanism is installed on the side, close to the feeding port, of the feeding box, and a second treatment mechanism is installed in the smashing box. And a drying mechanism for drying is mounted in the treatment box. According to the device, through the arrangement of the first treatment mechanism, to-be-treated straw can be placed in the moving box, two rotating plates are controlled to swing up and down in an opening, and therefore dust on the surface of the straw can be shaken off; and after the straws are cut by the cutting knife, a screw rod drives a rectangular plate to move back and forth in a moving box, so that the straw sections can be pushed to move back and ...

Screening method of dihydroxyacetone strains

The invention discloses a technology for fermenting dihydroxyacetone strains. The technology comprises the following steps: carrying out seed selection of target bacteria in advance, and refrigerating in a refrigerator for at least 15 days; adding sorbitol, wherein a mass ratio of sorbitol to glycerin is 3:5; carrying out high temperature sterilization, and adjusting the pH to be weakly acidic; adding a yeast extract, wherein the yeast extract is extracted from an inorganic nitrogen salt; and continuously adding trace elements comprising a zinc sulfate mixture, a nitrate mixture and an appropriate proportion of a calcium salt mixture in the fermentation until saturation for precipitating precipitates. The trace elements contain the manganese element; and in the whole fermentation process, the pH value rises to final 7.3 from initial 2. The technology has the advantages of stable conditions, simple operation, high content and high purity of dihydroxyacetone bacteria, and stable reaction.

Liner plate device suitable for worktable of plasma cutting machine

The invention relates to a liner plate device suitable for a worktable of a plasma cutting machine; the liner plate device is suitable for paving on the worktable of the plasma cutting machine, and comprises a rectangular bottom plate, a first rectangular frame welded at the periphery of the bottom plate and a second rectangular frame positioned in the first rectangular frame and welded with the bottom plate; a plurality of inverted angle steel welded with the bottom plate are arranged in the second rectangular frame in parallel; the top ends of the angle steel are positioned below the top ends of the first rectangular frame and the second rectangular frame; the angle steel are uniformly provided with transverse slots along the longitudinal direction; positions corresponding to the transverse slots of the second rectangular frame are provided with notches; partition plates are inserted in the transverse slots positioned on the same longitude and the notches of the second rectangular frame ...

Method for treating comprehensive electroplating wastewater

The invention relates to a method for treating comprehensive electroplating wastewater. The electroplating wastewater is separated and the recycling utilization rate of heavy metals resources can be improved by carrying out targeted treatment on each strand of separated water while improving the treatment efficiency. By using the micro-electrolysis function of iron and carbon, complex can be removed while removing COD (Chemical Oxygen Demand) and the biochemical property can be improved, which provides the guarantee for a subsequent biochemical reaction. By using the displacement action of the ion and the carbon, heavy metal ions in the water can be displaced and heavy metal resources can be recycled. Meanwhile, residual heavy metal ions in the water can be recycled by using the combining action of precipitating hydroxides and sulfides. On the basis, the water quality can meet the standard by using the ultrafiltration and reverse osmosis actions. The total hardness and the electric conductivity ...

TPO/PE composite film and metal film-coated plate

The invention discloses a TPO/PE composite film which comprises a PE layer, a glue layer and a TPO film layer, the lower side of the TPO film layer is bonded with the upper side of the glue layer, the lower side of the glue layer is bonded with the upper side of the PE layer, and the PE layer is made of a modified three-layer co-extrusion PE film. The invention further discloses a preparation method of the composite film and a preparation method of the metal film-coated plate coated with the composite film. The composite film and the film-coated steel plate provided by the invention can achieve the effects of water resistance, high weather resistance, acid and alkali resistance, strong decoration, safety, environmental protection and low cost.

Fermentation technology of cephalosporin

The invention discloses a fermentation technology of cephalosporin. Compared with existing fermentation technologies, the fermentation technology takes soya-bean oil serving as a raw material as a carbon source for fermentation of cephalosporin; before fermentation, CPC(cephalosporin c) fermentation needs to be carried out; in fermentation, the shape of the hypha is kept, the temperature is maintained at 15 DEG C; the soya-bean oil of the same parts by mass needs to be added into a culture medium; the added inorganic nitrogen takes urea as a main raw material; the concentration of ammonium sulfate in the culture medium is not more than 2%. The mass ratio of nitrogen to carbon is strictly controlled to be not more than 3:1, and the concentration of total sugar is controlled to be below 50mg/ml. The fermentation technology has the beneficial effects that the technology is easy to control, the reaction is simple, all dynamic states of the fermentation process are clear at a glance, so that ...

Welt device suitable for plasma cutting machine workstation

The utility model relates to a welt device suitable for plasma cutting machine workstation is fit for laying on the plasma cutting machine workstation, constitute including the rectangle bottom plate, weld in the first rectangle frame of bottom plate outlying and be located first rectangle frame and with bottom plate welded second rectangle frame, the inside parallel arrangement of second rectangle frame has a plurality of and bottom plate welded to be the angle bar of back -off, the top of angle bar is located under first rectangle frame and the second rectangle frame top, the angle bar is along vertically evenly having seted up the transverse groove, the second rectangle frame with the breach is offered to the position that the transverse groove corresponds, and the breach that lies in transverse groove and second rectangle frame on the same warp has inserted the baffle, the baffle upper end presents orderly wave, and the crest height is not less than the top of first rectangle frame ...

Oil tank lateral wall

The utility model discloses an oil tank lateral wall, characterized by, which comprises a body, the body middle part is equipped with the strengthening rib, body lower part parallel arrangement has the separation blade, is provided with the filter screen between the adjacent separation blade, body upper portion is provided with " article " font or " protruding " font structural slab, an object of the utility model is to provide an oil tank lateral wall for the aviation, an oil tank lateral wall has the separation blade through body lower part parallel arrangement, is provided with the setting of filter screen between the adjacent separation blade, can reduce the effect of fuel shaking amplitude and reducing impact load, and the bubble can be eliminated to the filter screen simultaneously, an oil tank lateral wall passes through body upper portion is provided with " article " font or " protruding " font structural slab, can reduce the weight of body, but an oil tank lateral wall is provided ...

Notch filter adjusting method and device and medium

The invention discloses a notch filter adjusting method and device and a medium, and relates to the technical field of wind power generation. The vibration condition of the wind driven generator is monitored; judging whether a vibration limit value is exceeded or not according to the vibration condition and receiving a system alarm; if yes, determining a vibration source and a vibration frequency according to the vibration condition and the vibration knowledge graph of the wind driven generator; wherein the wind driven generator vibration knowledge graph is a pre-constructed knowledge graph representing a corresponding relation between each part of the wind driven generator and different vibrations; and adjusting the structure of the parallel notch filter according to the vibration source and the vibration frequency. According to the scheme, the vibration source and the vibration frequency are determined by using the vibration knowledge graph of the wind driven generator so as to adjust ...

Process for fermenting glucose oxidase by using xylitol as raw material

The invention discloses a process for fermenting glucose oxidase by using xylitol as a raw material. The method comprises the following steps: performing infrared mutagenization by using a raw material xylitol as an original strain for producing glucose oxidase to ensure that the concentration mass fraction of primary sugar in a culture medium cannot be less than 10 percent; performing ultraviolet mutagenization again to select the glucose concentration of the best produced enzyme; shaking a bottle and fermenting, and setting the concentration of the primary sugar in the glucose oxidase membrane filtration and fermentation process to be at least 8 percent at first; performing dialysis by using a double-layer yarn film; adding hydrogen chloride or sodium hydroxide solution, and regulating the PH value to be within 4-7; carrying out a pass-generation test again for 3-5 times. The glucose concentration of the best produced enzyme is between 7.5 percent and 8.2 percent; the selected inoculation ...

Multilayer coating X9R capacitor ceramic dielectric material and preparation method thereof

The invention relates to a multilayer coating X9R capacitor ceramic dielectric material and a preparation method thereof. The multilayer coating X9R capacitor ceramic dielectric material is in a multilayer core-shell structure, sequentially comprises the components of a substrate BaTiO3, a coating layer 0.3Bi(Zn1/2Ti1/2)-0.7BaTiO3 and a coating layer Nb from inside to outside and is recorded as BaTiO3@x(0.3Bi(Zn1/2Ti1/2)O3-0.7BaTiO3)@yNb according to composition and coating sequences, wherein the mole ratio of the substrate BaTiO3 and the coating layer 0.3Bi(Zn1/2Ti1/2)-0.7BaTiO3 is recorded as x, and x is more than or equal to 1 and less than or equal to 4; the mole ratio of the substrate BaTiO3 and the coating layer Nb is recorded as y, and y is more than or equal to 0.05 and less than or equal to 0.35; and the dielectric material reaches the temperature within a range of -55-200 DEG C and the capacitance change rate at delta C/C25 less than or equal to +/-15%. The multilayer coating ...

Paddy and upland dual-use multifunctional ridging machine

The invention discloses a paddy and upland dual-use multifunctional ridging machine which is good in ridging efficiency. The paddy and upland dual-use multifunctional ridging machine comprises a rack, a suspension frame and a transmission case are arranged on the rack, a connecting hole is formed in the upper end of the suspension frame which is connected with a tractor through bolts, the transmission case is provided with an input shaft connected with an output shaft of the tractor and a transmission shaft connected with one end of a forming device shaft, a driving chain wheel is arranged on the transmission shaft and connected with a driven chain shaft which is arranged at one end of the forming device shaft, the forming device shaft is rotatably arranged on the rack through bearing seats, the two sides of the forming device shaft are provided with a left cone-shaped ridging device and a right cone-shaped ridging device respectively, and a cylindrical ridging device is arranged between ...

Mythic fungus mixture for enhancing human immunity

The present invention discloses a mythic fungus mixture for enhancing human immunity. The raw materials are specifically prepared according to the following ratio, wherein the raw materials comprise 5-20 parts of Liuwei dihuang pills, 3-30 parts of cordyceps sinensis, 1-10 parts of mung bean powder, 20-50 parts of rice powder, 1-5 parts of calcium carbonate, 1-3 parts of sodium phosphate, and 5.5-10.5 parts of glucose. During the preparation process, continuous stirring is required, and pure oxygen is continuous introduced; and according to requirements, vitamin substances can be added to the mixture, wherein the vitamin substances at least comprise vitamin B and vitamin C, and a mass ratio of the vitamin B to the vitamin C is 2:3. According to the present invention, the mixture effect is significant, the targeting property is strong, the cost is low, the performance price ratio is good, and the significant effect is provided for the nutrition tonification food.

Combined land preparation harrow

The invention discloses a combined land preparation harrow with a good land preparation effect. The combined land preparation harrow comprises a traction frame connected with a tractor as well as a mounting rack connected with the traction frame, wherein a travelling wheel hoist oil cylinder is arranged on the mounting rack, a piston rod of the travelling wheel hoist oil cylinder is connected with a first pin which is connected with the travelling wheel support frame through a connecting plate and a second pin, travelling wheels are arranged on the travelling wheel support frame, and a plurality of forwards inclined notched harrow blades are uniformly arranged at the front end of the mounting rack through a notched harrow support.

Airplane pressure maintaining oil tank

The invention relates to an aircraft pressure maintaining oil tank, and relates to the technical field of wing oil tanks. The device comprises an oil tank, the oil tank is communicated with an oil inlet pipe, an oil conveying pipe and a ventilation pipe, a mounting frame is fixed to the side wall of the oil tank, a driving mechanism is arranged on the mounting frame, an air inlet mechanism is arranged on the oil tank and communicated with the oil tank, a driving assembly is connected with the air inlet mechanism through a connecting rod, and the driving mechanism rotates to drive the connecting rod to drive the air inlet mechanism to move. The air blower is used for blowing air into the oil tank. The fuel tank has the advantages that the air inlet mechanism inflates the fuel tank under the same atmospheric pressure every time, so that the pressure in the fuel tank in each aircraft stroke is equal, and the fuel tank is safer and more stable.

Aircraft nose landing gear assembly test vehicle

The invention provides an aircraft nose landing gear assembly test vehicle, and relates to the field of aircraft assembly. The bottom of the base plate is provided with universal wheels, the top of the base plate is provided with a bearing plate used for placing the nose landing gear, the top of the base plate is provided with a containing groove, a fixing rod is arranged in the containing groove, the fixing rod is sleeved with a shaft sleeve, the shaft sleeve is fixedly provided with a guide plate, and the guide plate is fixedly arranged on the shaft sleeve before the nose landing gear is placed on the bearing plate. The guide plate is located below the bearing plate, and an adjusting mechanism is arranged in the containing groove and used for adjusting the guide plate, so that the nose landing gear is conveniently placed on the bearing plate. The nose landing gear supporting device has the effect that a nose landing gear is easily placed on the bearing plate.

Anti-HER2 polyclonal antibody as well as preparation method and application thereof

The invention provides an anti-HER2 polyclonal antibody as well as a preparation method and application thereof, wherein the anti-HER2 polyclonal antibody is applied in preparation of an immune detection tool for detecting HER2 protein. The anti-HER2 polyclonal antibody is applied in preparation of a kit used for diagnosing malignancy generated by excessive HER2 expression. The anti-HER2 polyclonal antibody provided by the invention is used for providing a high-specificity, high-sensitivity and high-quality antibody for HER2 protein antigen detection.

Real-time evaluation and optimization method and system for furnace baking state in refining furnace

The invention discloses a real-time evaluation and optimization method for a furnace baking state in a refining furnace, and the method comprises the following steps: collecting a three-dimensional point cloud in the furnace, a refractory material surface microscale image and a radiation image in a furnace shutdown state and during furnace baking, and calculating the three-dimensional size information in the furnace, the gap expansion information of the refractory material and the surface temperature information of the refractory material; obtaining a plurality of oven state distributions; according to the plurality of oven state distributions, analyzing and determining an association relationship between the oven curve and the plurality of oven state distributions; according to the incidence relation, the furnace baking effect of the refining furnace is evaluated; if the oven drying effect reaches the expected target, the oven drying process is completed; and if the expected target is ...

Terminal connector

The utility model discloses a terminal connector, include: the zigbee unit, a MCU unit. The PROFIBUS -DP interface unit. The utility model discloses a terminal connector through the cooperation of MCU unit and zigbee unit, just can realize terminal connector's wireless data collection, processing and communication function. Terminal connector is through the wireless communication with terminal acquisition ware or internetwork coordination ware, realizes sensor and the wireless communication's of outside PLC and host computer purpose.

Drilling position determining method, drilling position determining device, medium and electronic equipment

The invention provides a drilling position determining method, a drilling position determining device, a medium and electronic equipment. The drilling position determination method comprises the following steps: acquiring a first spatial point coordinate set; processing the first spatial point coordinate set through a first neural network model to obtain a first prediction stratum attribute corresponding to the voxel and a first probability value corresponding to the first prediction stratum attribute; generating a first stratum prediction model and a first uncertainty model based on the first prediction stratum attribute and the first probability value; and obtaining positions of a plurality of first drill holes in the three-dimensional engineering area based on the first stratum prediction model and the first uncertainty model. Compared with the method for determining the drilling position depending on the cognition of an engineer, the method for determining the drilling position can ...

Method for screening dihydroxyacetone strains

The invention discloses a method for screening dihydroxyacetone strains. The method comprises the specific steps of firstly, selecting appropriate soil which serves as a strain screening sample from deep soil, wherein the requirements on used soil are as follows: the used soil needs to maintain certain moistness and plants are planted in the soil for three consecutive years; enriching a soil culture medium, wherein a yeast extract and colchicine which are in the mass percent of 1: 2 are infused; carrying out high-temperature sterilization, and then, adjusting the pH value to be a weakly acidic state; infusing a calcium carbonate solution, then, adding agar, and stabilizing the pH value at 6.3; weighing by using a photoelectronic balance, carrying out high-speed centrifugation, and then, standing for 24 hours. A color developing agent can be used during screening and is a sodium hydroxide solution; during solution infusion, rapid and uninterrupted stirring is required. The method has the ...

Compound totally closed corrosion -resistant deck plate

The utility model belongs to the technical field of ornamental material. A compound totally closed corrosion -resistant deck plate, includes deck plate main part and obturator, the deck plate main part includes the base plate layer the both sides on base plate layer have all set gradually buffer layer, adhesive linkage and corrosion -resistant decorative layer, the obturator cladding sets up the periphery in the deck plate main part, the base plate layer is sealed to be set up in corrosion -resistant decorative layer and obturator, wherein, the coating has the epoxy acryl resin of thermofixation and the two solidification systems of photocuring on the decorative cover of corrosion -resistant decorative layer. The utility model discloses dimensional stability is good, and aging resistance is good, surperficial easy to clean, and the shaping of disposable high temperature high pressure, mould surface kenel is various, face, marginal totally closed, it is whole corrosion -resistant, mill's ...

A frontal arc frame for aircraft portable cabin skeleton

The utility model discloses a frontal arc frame for aircraft portable cabin skeleton, including frontal arc frame, well arc frame, back arc frame, left side section bar and right side section bar, the front end of frontal arc frame attach left side section bar and right side section bar, frontal arc frame both sides all are provided with locking Assembly with the part that left side section bar and right side section bar meet, and locking Assembly surrounds rather than the left side section bar of corresponding side or right side section bar, and every locking Assembly of group all is provided with two one end levels, and the other end has a diaphragm of radian, diaphragm level end is connected with frontal arc frame inside wall, and diaphragm radian end stretches to frontal arc frame center, and the radian end of two diaphragms of every locking Assembly of group is relative, and two diaphragm radian ends can be closed and locking rather than corresponding left side section bar or the right ...

Chitinase preparation method

The present invention discloses a chitinase preparation method, which specifically comprises: carrying out complete culture on target bacteria, wherein low temperature culture is performed from the beginning stage of the growth period until the final stage of the growth period is achieved, and then the obtained target bacterial is taken out and placed in a centrifuge tube; adding a fermentation enzyme and cellulose with a mass fraction of 1-2%; filtering with five layers of gauzes, and taking the precipitate; adding a sodium alginate solution with a mass fraction of 5%, and completely stirring and mixing to obtain a glass bead-like ball; carrying out hot bath for 15 min in water with a temperature of 85 DEG C, and adding a potassium cyanide solution; and carrying out high speed centrifugation, carrying out oscillation, and taking out, wherein the fermentation period is 35 h, and the target bacterial is streptomycete. The chitinase preparation method has the following beneficial effects ...

Combination is hung to spring crossbeam

The utility model discloses a combination is hung to spring crossbeam, including chain sling, crossbeam, auxiliary girder chain sling, auxiliary girder and hoist and mount area, the crossbeam both ends with the both ends of chain sling are connected, the crossbeam includes first steel pipe and second steel pipe, the second steel pipe cup joints in first steel pipe, be provided with the spring in the cavity in the first steel pipe, the one end of spring is fixed in the inside of first steel pipe, and the other end is fixed on the top of second steel pipe, there is first through -hole on the first steel pipe, have a plurality of second through -holes along steel pipe axis of ordinates direction distribution on the second steel pipe, positioning bolt runs through the position first through -hole and the second through -hole of coincidence mutually, the auxiliary girder passes through auxiliary girder chain sling symmetry is installed the both ends of crossbeam, be provided with a plurality ...

Dual -purpose multi -functional ridger in floods and droughts field

The utility model discloses a build the dual -purpose multi -functional ridger in floods and droughts field that ridge efficiency is good, include: the frame be provided with lift kits and transmission case in the frame lift kits's upper end is provided with the connecting hole, lift kits is connected with the tractor through the bolt be provided with input shaft that the tractor output shaft is connected and the transmission shaft that is connected with shaper axle one end on the transmission case be provided with drive sprocket on the transmission shaft, drive sprocket is connected at the driven sprocket of shaper axle one end with the setting through drive chain, the shaper axle rotates through the bearing frame respectively and sets up in the frame be provided with left conical earth banking apparatus and right conical earth banking apparatus on the both sides of shaper axle respectively, be provided with the cylindrical ridge roller of building between conical earth banking apparatus ...

Damping aircraft landing gear

The invention provides a damping aircraft landing gear, and relates to the field of landing gears. The unmanned aerial vehicle comprises a support, a connecting cylinder, a connecting rod and a wheel, the connecting cylinder is hinged to the bottom of the support, one end of the connecting rod stretches into the connecting cylinder, the other end of the connecting rod is connected with the wheel, and a damping mechanism is arranged between the connecting cylinder and the connecting rod; the damping mechanism comprises a first-stage damping assembly and a second-stage damping assembly, the first-stage damping assembly comprises a bearing plate and a damping spring, the bearing plate is arranged in the connecting cylinder in a sliding mode, the damping spring is fixed between the bearing plate and the connecting rod, and the second-stage damping assembly is arranged in the connecting cylinder and located above the bearing plate; and the buffering device is used for buffering impact force ...

Internetwork coordination ware

The utility model discloses an internetwork coordination ware, include: the zigbee unit to net very much the interface unit, the hot wall unit is prevented to the MCU unit, the utility model discloses an internetwork coordination ware, through the ethernet interface unit, the setting of MCU unit and zigbee unit, just can effectively establish a purple bee wireless network, management network node, storage network information, configuration node routing information, realize packet receiving and sending, the importance that can combine terminal equipment and packet, the synchronism requires the instruction setting to working parameter, working parameter sets up the instruction and confirms the response, strange land control data package, the response is confirmed to control data package in strange land, the new record packet, the response is confirmed to the new record packet, the history packet, the response is confirmed to the history packet, to the time packet type such as instruction ...

Mythic fungus mixture preparation process

The present invention discloses a mythic fungus mixture preparation process, which specifically comprises: taking a proper amount of mythic fungus, carrying out superfine crushing, and screening with a 120-150 mesh sieve; mixing a food raw material, a functional additive, and the treated mythic fungus, and culturing in a base culture medium; after 24 h, transferring into a drug culture medium, and drying; carrying out fermentation culture in a fermentation tank, and detecting the pH value, wherein the fermentation culture is stopped when the weak alkaline is achieved; and carrying out seed shake flask culture, and carrying out licorice root culture medium activation, wherein the 120-150 mesh sieve is a stainless steel sieve, and the activated strain of the mythic fungus is required to be inoculated in a sterile manner during the shake flask culture. The preparation process has the following beneficial effects that: the mixture effect is significant, the targeting property is strong, the ...

Preparation method of borax liquor

The invention discloses a preparation method of borax liquor. The preparation method comprises the following specific steps of: preparing electrophoresis buffer liquor; precisely weighing materials, and dissolving the materials by using the buffer liquor to obtain liquor with mass fraction not less than 50%; placing the liquor in a refrigerator for refrigerating for at least 12 hours, wherein the temperature of the refrigerator is 1 DEG C-2 DEG C; removing from the refrigerator, and then filtering by using a micro-porous membrane; placing the filtered precipitates into buffer liquor to carry out flushing, and then pouring into a capillary tube separating tube; centrifuging at a high speed for at least three minutes, cooling for one minute after getting out the precipitates, and centrifuging at the high speed for one minute again to obtain the borax liquor. Size of membrane holes for filtering of the micro-porous membrane is 0.2 mu m-0.3 mu m; an electronic layer becomes thinner with ion ...

Process for fermenting Bacillus mucilaginosus Krassilnikov

The invention discloses a process for fermenting Bacillus mucilaginosus Krassilnikov. The process comprises the following specific steps: culturing on a slant culture medium, wherein the slant culture medium comprises, by mass, 5-10 parts of sucrose, 10-22 parts of ferric chloride, 10-20 parts of sodium phosphate monohydrate, and 5-35 parts of calcium carbonate; carrying out activation on the bacterial, and culturing for 12 h in an environment with a temperature of 22 DEG C; rapidly inoculating the bacterial into a triangular flask, and shaking left and right; detecting the number of the spores; and baking in an environment with a temperature of 70 DEG C, wherein the acidity-alkalinity of the tissue solution is the weak alkaline, and the mass fraction of the calcium carbonate is 70-85%. According to the present invention, the process is optimized, the large number of the spores is obtained, the forming rate achieves more than 92%, and the acid amount is significantly reduced.

Cascade converter based on IGCT and control method

The invention discloses a cascaded converter based on IGCT and a control method. The converter comprises a controller and a plurality of DCAC modules. The output ends of the plurality of DCAC modules are connected in series, and each DCAC module comprises an IGCT device; the controller is used for controlling the output voltage of the first DCAC module to be zero when the IGCT device in the first DCAC module fails, so that the output end of the first DCAC module bypasses the converter; the first DCAC module is any one of the plurality of DCAC modules. According to the technical scheme provided by the invention, a special bypass switch does not need to be arranged, because the IGCT device is in a short-circuit mode when the IGCT device fails, namely a bypass current path is realized through the conduction state of the IGCT device, the bypass effect can be realized by combining the characteristics when the IGCT device fails, the hardware volume and importance are reduced, and the hardware ...

Rib support arm

The utility model discloses a rib support arm, characterized by, which comprises a body, the upper portion of body is provided with the locating hole, the lower part of body is provided with that first seize on both sides by the arms and the piece is seized on both sides by the arms to the second, it is first that seize on both sides by the arms and the second is seized on both sides by the arms and is provided with the fastener between the piece, the body top is provided with the connecting piece, the body is provided with strengthening rib and recess, an upper portion of rib support arm through the body is provided with the locating hole, makes the connection more firm, and difficult production is rocked, a lower part of rib support arm through the body is provided with that first seize on both sides by the arms and the piece is seized on both sides by the arms to the second, it is more stable when makes rib support arm be connected with other devices, firmly, simultaneously, applicable ...

Combined type pressure differential drilling string damping device

The utility model discloses mainly be applied to oil drilling engineering field, in particular to combined type pressure differential drilling string damping device, including the urceolus, the urceolus top sets up the top connection, the bottom sets up the lower clutch, through the splined connection inner tube in the lower clutch, set up the space between lower clutch and the inner tube, installation dish spring in the space, the circle is run from opposite directions in the periphery setting of inner tube top, set up the sealing ring between lower clutch bottom and the inner tube, set up oblique through -hole on the inner tube wall, the through -hole is located between dish spring and the sealing ring to one side, two above longitudinal arrangement's hollow piston is equipped with in the urceolus, the hollow piston is installed in the piston seat circle, the piston seat circle is fixed on the urceolus wall. At first to mud absorbs the longitudinal impact vibration energy among the tool ...

Real-time monitoring system and method for smelting state and molten steel temperature in RH refining furnace

The invention relates to a real-time monitoring system and method for the smelting state and the molten steel temperature in an RH refining furnace, and the system is characterized in that an acquisition and pretreatment unit is arranged at a certain height from the liquid level in a furnace body of the RH refining furnace; image information of the surface of molten steel in the furnace body is collected in real time, whether the surface of the molten steel needs to be purged or not is analyzed and determined through the slag proportion recognition model, and meanwhile the smelting state and the temperature of the molten steel in the RH refining furnace are monitored and early warned in real time under the condition that the furnace is not stopped. Compared with the prior art, the method has the beneficial effects that whether the slag on the surface of the molten steel in the furnace is blown or not is intelligently controlled, errors of collected data caused by slag coverage are avoided ...

System for predicting prognosis of non-surgical treatment primary liver cancer patient mainly based on platelet/spleen length-diameter ratio

The invention provides a system 1 or a system 2 which is mainly based on the length-diameter ratio of blood platelets/spleens and is used for predicting prognosis of patients with non-operative treatment of primary liver cancer. The prognosis refers to one-year survival probability and/or three-year survival probability after the patient is diagnosed with the primary liver cancer; the system 1 or the system 2 comprises a data collection module and a module for calculating a one-year survival probability and/or a three-year survival probability, the calculation module of the system 1 is based on an established visual Nomogram1 model, the calculation module of the system 2 is based on an established visual Nomogram2 model, and the calculation module of the system 1 and the calculation module of the system 2 are used for respectively assigning scores to independent factors which remarkably influence the survival of the patient and calculating a total score. In the two models, the score of ...

Deviation correction method, system and equipment for geological map scanning copy and medium

The invention provides a correction method and system for a geological map scanning copy, electronic equipment and a medium. The method comprises the following steps: acquiring a scanning copy of a geological map; preprocessing the scanned copy to obtain a preprocessed image; performing crease detection on the preprocessed image to obtain an original image of a crease area; performing brightness correction on the original image of the crease area to obtain a corrected image of the crease area; and carrying out distortion correction on the fold area correction image to obtain a corrected geological map image. The invention provides a correction method and system for a scanning copy of a geological map, electronic equipment and a medium, which can solve the phenomenon that the scanning copy is distorted and deformed at an image crease, improve the information integrity of a geological image with the crease, and facilitate the establishment of a geological information database.

Patient's clothes

The utility model discloses a patient's clothes, it includes the patient's clothes body, the collarband has on the patient's clothes body, the coat -sleeve, the coat -sleeve extends to the armpit from the cuff and is equipped with the first division of front of a garment, patient's clothes body both sides are equipped with the second and open the front of a garment, the first division of front of a garment is opened the front of a garment rather than the second of homonymy and is continuous form and divide into the front part of a chinese robe or jacket and the back of robe with patient's clothes, the front part of a chinese robe or jacket and the back of robe are opened the front of a garment along the first division of front of a garment, second and are equipped with the removable connecting piece that closes. The utility model discloses rational in infrastructure, the patient of being convenient for more changes one's clothes, greatly reduced nursing staff's work load, the various pipeline ...

Magnesium-based fly ash porous sound-absorbing material with surface hydrophobically modified and preparation method thereof

A magnesium-based fly ash porous sound-absorbing material with a surface hydrophobically modified, and a preparation method thereof are provided. In the preparation method, a basic magnesium sulfate cement is adopted as a cementing agent and a fly ash is adopted as a mineral admixture to prepare a slurry; foaming is conducted through a physical foaming process in a foaming machine to obtain a foam; and the foam is mixed with the slurry, and a resulting mixture is poured and cured, and then subjected to a surface hydrophobic modification through vapor deposition to obtain the sound-absorbing material. The sound-absorbing material has a density of 251 kg/m 3 to 306 kg/m 3 , a noise reduction coefficient (NRC) of 0.65 to 0.7, a compressive strength of 1.8 MPa to 2.2 MPa, and a water contact angle of 129° to 151°.

Method and apparatus for controlling backlight of display screen, electronic device and storage medium