Production system and production process of formwork-removal-free truss floor support plate

The invention discloses a production system and a production process of a formwork-removal-free truss floor support plate, and relates to the technical field of formwork-removal-free truss floor support plate production.The production system of the formwork-removal-free truss floor support plate comprises a production plant and a curing kiln, one of the production plant and the curing kiln is arranged above the other, and a lifting channel is arranged between the production plant and the curing kiln; a production line for producing the formwork-removal-free truss floor support plate is arranged in the production plant, a mold for transferring is arranged on the production line, the mold is used for prefabricating the formwork-removal-free truss floor support plate, and the mold is transferred to the maintenance frame through a discharging device; and the lifting device is used for transferring the curing frame between the production plant and the curing kiln through the lifting channel.

Sampling device for water conservancy and hydropower engineering

The sampling device comprises a pedestal used for fixing the device and a sampling pipe used for water conservancy and hydropower engineering sampling, a telescopic rod with a supporting function is welded to the left end of the pedestal, and a first fixing plate used for fixing the sampling pipe is welded to the fixed end of the telescopic rod; a hollow L-shaped supporting plate is welded to the output end of the telescopic rod, a toothed plate used for moving is sleeved with the supporting plate, a micro motor is installed on the outer side of the end, away from the telescopic rod, of the supporting plate, the output end of the micro motor is connected with a rotating shaft, and the rotating shaft is sleeved with a circular gear meshed with the toothed plate. A second fixing plate is welded to the outer side of the lower end of the supporting plate, and the side, away from the supporting plate, of the second fixing plate is rotationally connected with a plurality of winding wheels used ...

Hinged floating raft array type wave energy absorption system

The utility model belongs to the technical field of ocean energy utilization and renewable energy power generation, and particularly relates to a hinged floating raft array type wave energy absorptionsystem which mainly structurally comprises an underwater submerged body, a supporting structure, a power generation platform, a hinged floating raft, a plurality of hydraulic oil cylinders and the like. The underwater submerged body provides stable support for the whole system; the power generation platform and the underwater submerged body are connected into an integrated structure through a supporting structure. The hinged floating raft is connected with the supporting structure through four groups of sliding sleeves; the hinged floating raft floats on the wave surface; bending motion is carried out along with wave motion; therefore, the wave energy of the wave surface contacted with the hinged floating raft is converted into the mechanical energy of the floating raft; and then mechanical ...

Multiplex PCR (Polymerase Chain Reaction) primer group for simultaneously detecting five food-borne pathogenic bacteria in tilapia mossambica and detection method

The invention discloses a multiple PCR primer group capable of simultaneously detecting five food-borne pathogenic bacteria in tilapia mossambica and a detection method. The multiplex PCR detection primer is composed of primer pairs specifically aiming at a streptococcus agalactiae ef-t mu gene, an aeromonas hydrophila ompA gene, a salmonella invA gene, a vibrio cholerae ompW gene and an escherichia coli phoA gene, and the sequence table 2 of the multiplex PCR detection primer is shown in the specification. Based on the primer pair, a multiplex PCR detection system and reaction conditions are optimized, a quintuple PCR detection method is established, the specificity, sensitivity and artificial simulation sample detection of the multiplex PCR system are evaluated, the sensitivity is 0.4 ng/mu L or above, and the detection limit can reach 102 CFU/mL. The establishment of the method provides an important technical means for rapid detection of common food-borne pathogenic bacteria of tilapia ...

Variable-diameter cleaning device for auxiliary chamber of single crystal furnace

The invention discloses a variable-diameter cleaning device for an auxiliary chamber of a single crystal furnace, relates to the technical field of single crystal silicon manufacturing, and can at least partially solve the problems that an auxiliary chamber cleaning tool in the prior art is low in universality for auxiliary chambers with different sizes and cannot clean impurities at the top end of the auxiliary chamber. The variable-diameter cleaning device for the auxiliary chamber of the single crystal furnace comprises a supporting cylinder assembly and an arc-shaped elastic scraper used for cleaning the inner wall of the auxiliary chamber, a length-variable supporting assembly is further arranged between the supporting cylinder assembly and the elastic scraper, one end of the supporting assembly is arranged on the outer circumferential wall of the supporting cylinder assembly, and the other end of the supporting assembly is arranged on the outer circumferential wall of the supporting ...

Automatic taking and hanging device for single crystal furnace feeder

The invention discloses an automatic taking and hanging device for a single crystal furnace feeder, relates to the technical field of monocrystalline silicon manufacturing, and can at least partially solve the problem that the feeder needs to be taken and hung manually in the prior art. The automatic taking and hanging device for the single crystal furnace feeder comprises an opening and closing hanging buckle assembly which is arranged at the bottom of a heavy hammer and moves up and down along with the heavy hammer, and a hanging and taking assembly which is coaxially matched with the opening and closing hanging buckle assembly in the feeder hanging and taking process, the hanging arm comprises a hook structure arranged at the bottom of the hanging arm and used for hanging and buckling the hanging and taking assembly. The hanging and taking assembly comprises a hanging push head, a taking sliding sleeve and a connecting rod, the bottom of the connecting rod is fixedly connected with the ...

Mycobacterium bovis antibody detection kit

The invention provides a mycobacterium bovis antibody detection kit, and relates to the field of veterinary medicine. The mycobacterium bovis antibody detection kit comprises an elisa plate coated with a fusion protein Rv3403c-CFP10-ESAT6, and the amino acid sequence of the fusion protein Rv3403c-CFP10-ESAT6 is as shown in SEQ ID NO. 2 (sequence identifier number 2). The detection kit disclosed by the invention has relatively high sensitivity and specificity.

Truss floor support plate production line free of formwork removal

The invention discloses a formwork-removal-free truss floor support plate production line, and relates to the technical field of building floor slab production. The floor support plate production line comprises a roller line and a plurality of mold tables, the roller line is arranged on the ground, the mold tables are arranged on the roller line, and the roller line is provided with a plurality of molds used for prefabricating and forming a floor support plate; the roller line is annular, and one part of the roller line is located in the curing kiln; a demolding station, a cleaning station, a drying station, a demolding agent spraying station, a gridding cloth arrangement station, a concrete distribution station, a rolling station, a truss arrangement station, a vibrating station and a curing agent spraying station are sequentially arranged on the roller line from an outlet of the curing kiln. The concrete distribution station is arranged in front of the truss arrangement station, the roll-leveling ...

BLOCKCHAIN BASED SECURE NAMING AND UPDATE VERIFICATION

A secure update is provided from a server to an end-point device. The server registers digital information, such as a name or a software package, and a verifiable key, such as a cryptographic hash, derived from the digital information. A publicly accessible transaction log stores the verifiable key in a block and provides an identifier of the block to the server. An end-point device receives the digital information and the identifier, and computes a separate verifiable key. The end-point device retrieves the verifiable key from the block of the publicly accessible transaction log, and compares the retrieved verifiable key to the separate verifiable key to determine whether the digital information has been compromised.

Building foundation pile safety monitoring system

The invention discloses a building foundation pile safety monitoring system which is characterized in that the building foundation pile safety monitoring system comprises a detection component arranged in parallel with a concrete foundation pile to be monitored, the detection component is made of a concrete material the same as that of the concrete foundation pile, and a strain gauge is embedded in a monitoring depth position in the detection component; the strain gauge is connected out of the detection component through a connecting line embedded in the detection component and is connected with the control device, and the control device is connected with the alarm device. The method has the advantages that implementation is easy and feasible, monitoring reliability is high, practicability is high, and the safety of the building foundation pile under the condition that the building foundation pile is eroded by sulfate in the salinized environment can be better monitored.

Blockchain based secure naming and update verification

A secure update is provided from a server to an end-point device. The server registers digital information, such as a name or a software package, and a verifiable key, such as a cryptographic hash, derived from the digital information. A publicly accessible transaction log stores the verifiable key in a block and provides an identifier of the block to the server. An end-point device receives the digital information and the identifier, and computes a separate verifiable key. The end-point device retrieves the verifiable key from the block of the publicly accessible transaction log, and compares the retrieved verifiable key to the separate verifiable key to determine whether the digital information has been compromised.

Corrosion-resistant and high-performance neodymium-iron-boron sintered magnet, preparation method therefor, and use thereof

The present invention provides a corrosion-resistant and high-performance sintered neodymium-iron-boron magnet, a preparation method therefor, and a use thereof. The sintered neodymium-iron-boron magnet of the present invention is prepared by pulverizing, forming, and sintering a sintered neodymium-iron-boron magnet composition. The sintered neodymium-iron-boron magnet contains: 28.5 wt% to 32.5 wt% of R; 0.88 wt% to 0.94 wt% of B; 0.1 wt% to 0.3 wt% of Ga; 1.0 wt% to 3.0 wt% of Co; and 400 ppm to 1000 ppm of O. According to the present invention, the sintered neodymium-iron-boron magnet capable of inhibiting reduction of coercive force and improving the coercive force can be obtained by means of an oxygen adding operation, and meanwhile, the corrosion resistance of the magnet can be improved.

R-t-b based permanent magnet material, preparation method therefor and use thereof

An R-T-B based permanent magnet material, a preparation method therefor and use thereof are provided. The M compound is adhered to or coats the R-T-B based alloy powders to form a uniform coating layer on the surface of the neodymium-iron-boron powders, so that the rounding transformation of the R-T-B based alloy powders can be achieved, and further the wettability of the R-T-B based alloy powders is improved under the condition of significantly reducing the amount of heavy rare earth metals in the substrate. In addition, the grain boundary phases of M-R and/or M-T-R are present in the grain boundary of the R-T-B based permanent magnet material, the physicochemical properties of the grain boundary phases can be significantly improved, the distribution of the grain boundary phases is improved, and the grain boundary is strengthened.

R-t-b based permanent magnet material, preparation method therefor and use thereof

The present disclosure relates to an R-T-B based permanent magnet material, a preparation method therefor and use thereof. According to the present disclosure, the M compound is adhered to or coats the R-T-B based alloy powders to form a uniform coating layer on the surface of the neodymium-iron-boron powders, so that the rounding transformation of the R-T-B based alloy powders can be achieved, and further the wettability of the R-T-B based alloy powders is improved under the condition of significantly reducing the amount of heavy rare earth metals in the substrate. In addition, the grain boundary phases of M-R and/or M-T-R are present in the grain boundary of the R-T-B based permanent magnet material, the physicochemical properties of the grain boundary phases can be significantly improved, the distribution of the grain boundary phases is improved, and the grain boundary is strengthened, so that a reverse core-shell structure can be avoided, and the permeation of heavy rare earth elements is facilitated, so that the Hcj of the R-T-B based permanent magnet material is improved.

Corrosion-resistant and high-performance sintered neodymium-iron-boron magnet, preparation method, and use thereof

A corrosion-resistant and high-performance sintered neodymium-iron-boron magnet, a preparation method therefor, and a use thereof are provided. The sintered neodymium-iron-boron magnet is prepared by pulverizing, forming, and sintering. The sintered neodymium-iron-boron magnet contains: 28.5 wt % to 32.5 wt % of R; 0.88 wt % to 0.94 wt % of B; 0.1 wt % to 0.3 wt % of Ga; 1.0 wt % to 3.0 wt % of Co; and 400 ppm to 1000 ppm of O. The sintered neodymium-iron-boron magnet capable of inhibiting reduction of coercive force and improving the coercive force can be obtained by means of an oxygen adding operation, and meanwhile, the corrosion resistance of the magnet can be improved.

Corrosion-resistant and high-performance neodymium-iron-boron sintered magnet, preparation method therefor, and use thereof