20results about How to "Ensure normal exposure" patented technology

The invention discloses a preparation method and application of a biological enzyme immobilization carrier, and the preparation method comprises the following steps: S1, soaking dried calcium pectin powder in a pyrrole monomer aqueous solution, so that a pyrrole monomer uniformly permeates into calcium pectin gel particles along with water; s2, soaking the hydrogel obtained in the step S1 in a FeCl3 aqueous solution, and cross-linking the pyrrole monomer into polypyrrole; s3, the gel particles are put into a chitosan solution, the pH value of the chitosan solution is 4.0-4.5, stirring is conducted, chitosan is enriched on the surfaces of the calcium pectin gel particles to form a polyelectrolyte compound, and the chitosan is electrostatically adsorbed on the surfaces of the gel particles to obtain a biological enzyme fixed carrier with a gel core structure; according to the biological enzyme carrier with the gel solid structure, the characteristic that water in gel in the carrier does not flow is utilized, a substrate in reaction liquid is effectively enriched on the surface of the enzyme carrier, contact between enzyme and the substrate is improved, and the conversion efficiency of galactooligosaccharide is improved.

The utility model discloses a plate straightener roller surface defect on-line detection lamp, which comprises a lamp holder, a flashlight and a plurality of rollers, the two ends of the lamp holder are respectively positioned at the upper parts of two adjacent straightening rollers of the plate straightener, and the lower parts of the two sides of the lamp holder are respectively provided with the rollers distributed along the circumferential direction of the two adjacent straightening rollers. The axes of the idler wheels are parallel to the axes of the straightening rollers, the rims of the idler wheels abut against the roller faces of the corresponding straightening rollers, the two flashlights abut against the roller faces of the two adjacent straightening rollers respectively and are fixed to the two ends of the lamp holder respectively, and the axes of the flashlights are parallel to the axes of the straightening rollers. The roller wheel device is installed on the upper portion of a lower roller system, the roller wheel can rotate along with a straightening roller, the position of a flashlight on the lamp holder is kept unchanged, it is guaranteed that light of the flashlight irradiates along the roller face of the straightening roller all the time, an operator only needs to hold a grinding machine by hand to grind bonded iron on the roller face, the labor intensity of the operator is greatly reduced, and the working efficiency is improved. The grinding efficiency of the roll surface of the plate straightening machine is improved, and potential safety hazards are eliminated.

The invention relates to a double-antigen type 1 diabetes vaccine targeting intestinal M cells and a preparation method of the double-antigen type 1 diabetes vaccine, and belongs to the technical field of biology. The method comprises the following steps: connecting human GAD65191-320, INS17-110 and CKS9 targeting peptide CKSTHPLSC through G4S connecting peptide according to the sequence, optimizing lactobacillus codon preference, inserting the human GAD65191-320, the INS17-110 and the CKS9 targeting peptide CKSTHPLSC into a pNZ8148 vector together, transforming constructed recombinant plasmids into MC1061 competent escherichia coli for cloning amplification, and extracting the recombinant plasmids; the recombinant plasmid is electrically transferred into NZ9000 competent lactococcus lactis to construct a GAD65191-320 + INS17-110 + CKSTHPLSC recombinant lactic acid bacteria vaccine, and after amplification, Nisin is used for inducible expression of the fusion protein. According to the present invention, the recombinant lactic acid bacteria vaccine is orally taken to immunize STZ induced BALB / c diabetes model mice, such that the mice can be induced to produce the GAD65 + INS specific antibody, and the proliferation of regulatory T cells and dendritic cells secreting interleukin 10 can be promoted so as to induce the immune tolerance, inhibit the differentiation of young DCs and maintain the blood glucose level, such that the type 1 diabetes mellitus can be prevented and treated.

The invention relates to the field of land surveying and surveying equipment, and discloses a soil layer profile protection device for land investigating.The soil layer profile protection device comprises a positioning box body and a winding box body, the positioning box body and the winding box body are connected through a supporting assembly, the supporting assembly can vertically slide on the positioning box body, and a protection top film is wound in the winding box body; two sets of positioning supports are rotationally connected into the positioning box body, connecting ropes are arranged at the two corners of the free end of the protective top film and used for being hung on the positioning supports, and the supporting assembly is located below the protective top film and can stretch out and draw back. The soil layer section can be protected, and investigators can freely move in the pit body and observe the soil layer section conveniently.

This utility model relates to the technical field of optical device coating equipment, and particularly to a coating fixture for an open-aperture lens. The open-aperture lens has a coating surface at one end along the axial direction and a positioning part at the other end. The open-aperture lens also has a through hole along the axial direction. The coating fixture includes a fixture body and a fixing member. A positioning groove is provided at the bottom of the fixture body, and a through hole communicating with the positioning groove is provided at the top of the fixture body. The positioning groove is used to position the positioning part. The fixing member passes through the through hole and the through hole in sequence. One end of the fixing member has a limiting part that can be engaged in the through hole, so that the positioning groove positions the positioning part. The coating fixture for the open-aperture lens provided by this utility model can reliably fix and accurately position the lens without obstructing the coating surface.

The utility model belongs to the technical field of lamp installation structures, and particularly discloses an automobile welcome lamp installation support which comprises a shell, a positioning rod and an installation rod, the interior of the shell is hollow, an opening is formed in one side of the shell, the positioning rod is arranged on the upper surface of the shell, and the installation rod is arranged on the bottom face of the shell. A clamping hole is formed in the end, away from the shell, of the mounting rod, clamping rods are arranged at the two ends of the shell, first bayonets are formed in the connecting positions of the clamping rods and the shell, and the support can be clamped to a vehicle door protection plate or the bottom face of a vehicle door through the opening during mounting and then fixed through the first bayonets in the connecting positions of the clamping rods and the shell. The installation support can be arranged on a car door protection plate or the bottom face of a car door, then a welcome lamp is placed on the upper surface of the installation rod, the welcome lamp can be stably installed on the car door, then an irradiation opening of the welcome lamp is clamped to the clamping hole, it is guaranteed that the irradiation opening of the welcome lamp faces the bottom face, and normal use of the welcome lamp is guaranteed.

The utility model belongs to the technical field of insulating tube, specifically is a kind of environment-friendly insulating plastic insulating tube, including pipe body, rubber tube, spring and protection tube, the surface of pipe body is provided with splicing component, the splicing component is used to splice multiple pipe bodies, the surface of pipe body is fixedly installed with rubber tube, by the setting of rubber tube and spring, rubber tube can provide absolute insulation and protection to cable, and simultaneously its own material also has certain ductility, can extend according to the movement of cable, improve coverage area, spring can play buffering effect, to ensure that foreign matter cannot harm rubber tube.

The steam rice line comprises a production line body, a conveying mechanism is arranged in the production line body, the two ends of the conveying mechanism are the feeding end and the discharging end respectively, a heating device is further arranged on the production line body and used for processing rice particles, and after the rice particles are input from the feeding end, the rice particles are heated through the processing effect of the heating device; the discharging end can output rice formed after steaming; the production line main body is also provided with a loosening mechanism which is used for loosening to-be-steamed rice particles during transportation, so that the to-be-steamed rice particles are loosened and are not agglomerated, the to-be-steamed rice particles positioned in the middle part can be exposed and are not layered, and the phenomena that the rice is not cooked, the rice is accelerated to be cooked and the taste is enhanced are avoided.

The massage eyeshade comprises an eyeshade body (1), the eyeshade body (1) is provided with a left cavity and a right cavity, each cavity is internally provided with a luminous source (2), and the luminous sources (2) are connected with a power source in the eyeshade body (1); the LED lamp is characterized in that a light-transmitting lens (3) is arranged at the position, close to the eyes of the human body, of the cavity, and light rays obtained after the light-emitting source (2) is lightened are reflected and projected through the light-transmitting lens (3) and then are diffused and enter the eyes of the human body. According to the massage eyeshade, the light-transmitting lenses are adopted, so that light rays after the light-emitting source is lightened are diffused through the light-transmitting lenses and enter the eyes of the human body after being reflected and projected, namely, the brightness of light emitting is increased, iris muscles are stimulated, pupils are shrunk, the backflow amount of aqueous humor is further increased, intraocular pressure is reduced, and the myopia speed can be slowed down.

The application provides a packaging method of an LED lamp bead and the LED lamp bead, and belongs to the technical field of LEDs. Specifically, a plurality of LED chips are provided, the first surface of the LED chip is provided with a welding electrode; the second surface of the plurality of LED chips is arranged on a bottom film, the second surface is arranged opposite to the first surface; the adjacent LED chips are provided with a gap; a glue layer is formed in the gap, and the surface of the glue layer is not higher than the first surface of the LED chip. By controlling the surface of the glue layer to be not higher than the first surface of the LED chip, the complete exposure of the first surface and the welding electrode is maximized, an unobstructed welding interface is provided for welding, and the problem that the glue layer around the welding electrode is expanded by heat and stress to affect the welding effect is fundamentally avoided.

The invention is applicable to the technical field of Raman spectrum detection, and provides a surface enhanced Raman spectrum detection method based on an aggregation re-stabilization strategy, comprising the following steps: S1: uniformly mixing colloidal gold and a test object; S2: adding an aggregating agent to the system of S1 and quickly mixing them uniformly, so that the colloidal gold undergoes aggregation to generate colloidal gold aggregates; S3: adding an acrylamide-methylenebisacrylamide solution to the system of S2, and then adding a tetramethylethylenediamine solution and an ammonium persulfate solution and mixing them uniformly; S4: pouring the mixture obtained in S3 into a beaker and placing it in an incubator until a polyacrylamide hydrogel-stabilized colloidal gold aggregate SERS detection substrate is formed; S5: taking out the SERS detection substrate formed in S4 and placing it on a tin foil paper surface. The detection method of the invention improves the sensitivity of SERS detection, and greatly improves the stability and uniformity of SERS detection of gold nanoparticle aggregates.

The utility model belongs to test device technical field especially a circuit board testing device, aim at when carrying out salt mist test, circuit board is inconvenient to fix, the problem that horizontal placement is easy to influence back test effect, present and propose following scheme, including sealed cabinet, the cabinet mouth place of sealed cabinet one side is rotatably installed with two sealed cabinet doors, the inner wall of sealed cabinet is fixed with two horizontal poles symmetrically, be provided with the hanging component for vertical circuit board on the horizontal pole, the top of sealed cabinet inner wall is fixed with liquid injection pipe through bolt. The utility model discloses through setting up hanging component to realize circuit board vertical fixation, avoid horizontal placement back and cabinet contact to cause the salt mist deposition uneven, ensure that test surface is exposed to salt mist environment completely, improve the accuracy of corrosion evaluation, and the clamping structure of U type card frame and the setting of holding rod, facilitate the batch installation and taking out of circuit board, shorten test preparation time.

The application provides a kind of circular arc secondary mirror design method and contain circular arc secondary mirror's slot type light-gathering heat collection system, belong to solar light-gathering heat collection technical field. In order to solve the existing secondary reflection slot type light-gathering system's parabolic surface type, composite parabolic surface type and flat plate type curve structure complex, it is easy to cause light-gathering effect to be poor due to processing error;Secondary reflection mirror installation and use will cause the defocusing phenomenon caused by mirror shape error and tracking error to cause the deflection of incidence angle, affect light-gathering effect problem. The application is by installing a kind of circular arc secondary mirror, and the radius, position and width of circular arc secondary mirror are calculated, to ensure that the reflected light through the secondary mirror is maximized to irradiate on the heat collecting tube, to improve the optical efficiency while reducing the processing difficulty.

This invention relates to a device for measuring the flow distribution of mixed particles. It includes a photosensitive element, an illumination mechanism, a measuring tube connected to one side of a pipe, a vibrating tube connected to the other side of a pipe, and a vibration device surrounding the vibrating tube. The measuring tube and the vibrating tube are interconnected. The illumination mechanism and the photosensitive element are spaced apart around the measuring tube. The illumination mechanism emits light that passes through the measuring tube and the mixed particles, and the photosensitive element senses the light. The vibrating end of the vibration device alternately contacts the vibrating tube according to the stratification of the mixed particles, thus affecting the particle distribution. This invention solves the problem that existing solutions cannot measure the particle distribution.

The utility model belongs to the technical field of plant tissue culture tools, and discloses a plant tissue culture placing device with a protective structure, which comprises a moving component, the moving component comprises a bottom frame and universal wheels, one side of the bottom frame is rotatably connected with a swing door, a handle is fixed inside the swing door, and a pushing handle is fixed on one side of the bottom frame. A transparent cover is rotationally connected to the top of the bottom frame, exhaust holes are formed in one side of the transparent cover, a rotating plate is rotationally connected to one side of the transparent cover, a partition plate is fixed in the bottom frame, vent holes are formed in one side of the partition plate, a filter screen is fixed to one side of the bottom frame, and a water conveying assembly is fixed in the bottom frame. By means of the design of the transparent cover, external air can be well isolated, sunlight irradiation can be guaranteed, exhaust holes are formed in one side of the transparent cover, the exhaust holes can serve as holes for exhausting air in seasons and can play a role in exhausting air in out-of-seasons, one side of the transparent cover is rotationally connected with a rotating plate, the rotating plate can block the exhaust holes, and therefore the exhaust holes can be prevented from being blocked by the rotating plate. Therefore, a good heat preservation effect is achieved.

The invention discloses a cavity bag supporting negative pressure suction device for induced abortion, which comprises an electric abortion suction unit, a negative pressure air pipe, a negative pressure drainage pipe and an external expansion part, and one end of the negative pressure air pipe is fixedly arranged on the electric abortion suction unit. By twisting a second locking screw, the control ring, the connecting rod and the sliding ring are pulled to move, and the sliding ring moves towards the direction of the fixed ring; the fixing ring drives the second elastic fiber rod and the second elastic fiber sleeve to move towards the first elastic fiber rod and the first elastic fiber sleeve with the axis, connected with the middle adapter, of the middle support as the circle point. The first elastic fiber rod, the first elastic fiber sleeve, the second elastic fiber rod and the second elastic fiber sleeve are arranged in a horn shape in an incomplete folding state, the uterine cavity is supported through the horn shape, the safety and efficiency of an operation can be improved, damage to the uterine cavity can be reduced to the maximum extent, and the operation safety is improved. Therefore, the positive influence on the postoperative recovery of the patient is realized.

The invention discloses a passion fruit planting shed frame and method facilitating fruit collection, the passion fruit planting shed frame comprises a shed frame supporting side plate I and a shed frame supporting side plate II, and a plurality of fixed supporting cross rods are connected between the shed frame supporting side plate I and the shed frame supporting side plate II; movable supporting cross rods are connected between the first shed frame supporting side plate and the second shed frame supporting side plate and located between the adjacent fixed supporting cross rods, and a fluctuating linkage assembly connected with the movable supporting cross rods is fixedly installed between the bottoms of the fixed supporting cross rods at the head end and the tail end. The device has the beneficial effects that the effect that a traditional shed frame is only used as a climbing carrier is changed, vertical layered use of the shed frame is achieved, sufficient sunlight can be provided for growth of passion fruits, vines are prevented from growing worms, the passion fruits can be conveniently shaken off from the shed frame in the picking process, picking and collecting work of the passion fruits is facilitated, and the device is suitable for popularization and application. The passion fruits are prevented from falling to the ground and being damaged.

This utility model relates to the field of gear processing technology, specifically to a tooling for loading gear parts for carburizing and quenching. Through the setting of a height adjustment component, the spacing between the support rods can be adjusted according to the size of the gear. The two ends of the gear hanger are inserted into the hanger limiting grooves of the front and rear support rods. The hanger limiting grooves are evenly distributed to ensure the gear hanger is horizontally stable. Limiting blocks are installed at both ends of the gear hanger via threads. The diameter of the limiting blocks is larger than the hanger limiting groove to prevent the gear hanger from falling out of the groove. Gear parts are sequentially fitted onto the gear hanger, with the gear inner hole and gear hanger having a clearance fit. The teeth of each gear are inserted into the corresponding gear limiting groove. The gear limiting grooves are evenly spaced to avoid contact between gears, ensuring the tooth surface is fully exposed. The carburizing medium can fully coat the tooth surface. Furthermore, the gear hanger is used for batch loading and unloading. After quenching, the gear hanger can be tilted to quickly remove the gear.

The utility model discloses a fishing bracelet with an automatic lighting function, which comprises a bracelet, an automatic lighting assembly is fixed on the bracelet, the automatic lighting assembly comprises an upper shell and a lower shell, the upper shell is clamped at the top of the lower shell, the upper shell is in the shape of a circular truncated cone, a plurality of LED lamp beads are arranged on the side portion of the upper shell, and the LED lamp beads are arranged on the upper shell. A circuit board, a battery pack and a mercury switch are arranged in the lower shell, the bracelet is connected with a second connecting belt and worn on the wrist of a fisherman through the first connecting belt, through the arrangement of the mercury switch, during night fishing, the switch is turned on, during fishing and when a fishing rod is lifted, the LED lamp beads are brightened, and when the fishing rod is put down, the fisherman can conveniently replace bait or take off a hook; during fishing in the daytime, the switch is turned off, the LED lamp beads cannot illuminate for no reason, and under illumination in the daytime, light energy is converted into electric energy through the solar panel and supplied to the battery pack to be stored.