46results about How to "Stable function" patented technology

The application provides an antibacterial neural electrode based on a high-surface-potential zirconium oxide layer and a preparation method thereof. The electrode comprises, from bottom to top, a bottom zirconium oxide film layer, a first insulating layer, a metal layer, a second insulating layer, a top zirconium oxide film layer and an electrode modification layer. A distal end of the metal layer is partially exposed to form an electrode point, and the electrode modification layer covers the electrode point. The bottom zirconium oxide film layer and the top zirconium oxide film layer are subjected to high-surface-potential treatment and exhibit a positive surface potential in a physiological environment. The positive surface potential can destroy the cell membranes of bacteria with negative charges through electrostatic action after the neural electrode is implanted in vivo, and inhibit the formation of microglial cells and astrocytes. The damage to the membranes of mammalian cells (such as neurons) with neutral electricity is extremely small. The application realizes active antibacterial function through the high-surface-potential zirconium oxide film layer, ensures long-term effective contact between the electrode and neurons, and thus realizes high-quality, long-term stable electrophysiological recording and stimulation function of the neural electrode.

This invention relates to the field of condensate recovery technology, specifically a closed-loop condensate recovery device, comprising a tank with a water outlet pipe at the bottom. The tank is divided into three zones—a central steam buffer zone, a lower condensate collection zone, and an upper negative pressure condensation zone—by two horizontal baffles. This closed-loop condensate recovery device eliminates the need for additional power components such as pumps. It relies on the downward pressure difference of the condensate in the negative pressure condensation zone and the negative pressure generated by steam condensation as the drainage driving force. It fully utilizes the system's own energy, eliminating dependence on external power and significantly reducing operating energy consumption. The condensate introduced by the downward pressure drainage pipe creates a downward impact, which, combined with the negative pressure introduced by the negative pressure venting pipe, forms a dual drainage drive, providing stronger power and higher efficiency than traditional single gravity drainage. Simultaneously, it drives the condensate in the pipe to repeatedly flush, comprehensively covering the entire pipe area and thoroughly removing impurities and silt from different sections, offering better anti-clogging performance than unidirectional disturbance.

The utility model discloses a stamping processing waste material cleaning collection device relates to stamping waste material collection technical field, including punch press platform, the punch press platform lateral wall bottom symmetry is equipped with limiting bolt, the punch press platform bottom and sliding connection in limiting bolt outer wall is equipped with the wheel removal outer box, the wheel removal outer box inner wall sliding connection has the material receiving inner box, the material receiving inner box bottom is equipped with the material discharge opening, the material discharge opening inner wall sliding connection has the opening cover, one end lateral wall of opening cover is equipped with the inclined slide, the inclined slide top is equipped with the side baffle, one end symmetry of opening cover top is equipped with the connecting column, the other end lateral wall of opening cover is equipped with the limiting connecting plate symmetry. The utility model discloses in combination linear sliding and rotation design, further increase convenient material discharge design, so that the device when using, and the user can effectively discharge and clean the waste material in the box.

This invention relates to the interdisciplinary field of cell biology, experimental oncology, and translational medicine, specifically to a cancer-associated fibroblast cell line, its construction method, and its applications. This invention fills the research gap in mouse-derived oral squamous cell carcinoma-associated fibroblast cell line models and provides a method for constructing such a cell line. Through the inverted adherent culture and enzymatic digestion methods of this invention, a mouse-derived oral squamous cell carcinoma-associated fibroblast cell line with a clear origin, high purity, and long-term phenotypic and functional stability can be obtained. This allows for the establishment of a cryopreservable and resuscitable mouse oral squamous cell carcinoma-associated fibroblast cell bank, providing technical support for research related to the tumor microenvironment and immunotherapy.

The utility model discloses a two-way throttling solenoid valve with adjustable flow, which comprises a solenoid valve body, the solenoid valve body comprises a valve body, a valve sleeve, an iron core, a valve core and an adjusting mechanism, the valve sleeve, the iron core and the valve core are positioned in the valve body, and the adjusting mechanism is used for rotating a pull rod to drive the iron core to move up and down. Meanwhile, the iron core clamping groove ensures that the pull rod is stably connected with the iron core, so that the adjusting action is accurately transmitted; a gap groove in the valve element is matched with the adjusting mechanism, flow adjustment is further refined, and the flexibility and accuracy of adjustment are enhanced; the gap alpha between the valve sleeve and the iron core defines the flow adjusting range, an operator can conveniently and finely control the rotation amplitude of the pull rod in a labor-saving mode through the hand wheel, and stable rotation of the pull rod and stable movement of the iron core during adjustment are guaranteed through cooperation of the rod sleeve on the outer wall of the pull rod and the valve body wedging groove.

The invention belongs to the technical field of experimental animal models, biomedical research and immunology, and discloses a photocoagulation thymus ischemia animal model, a method and application of the photocoagulation thymus ischemia animal model in rapid simulation of thymus degeneration and immune senescence, and the model shows at least one or more characteristics 1-7 days after induction: thymus atrophy, thymus weight or thymus index is significantly reduced; the cortical-medullary structure of thymus is disordered or disappears; the expression distribution of the Keratin 5 / Keratin 8 is abnormal; thymic cell apoptosis is increased, and lipid deposition is enhanced; the proportion of CD4 + CD8 + double positive T cells is reduced, and the proportion of DN2 / DN3 stage T cells is increased; the initial T cell output is reduced; and the immune function is reduced. The pathological mechanism is clear; the modeling period is short, and the immune senescence phenotype can be stably obtained within several days; the injury focus is controllable, and systemic stress or hormone interference is avoided; the model has high repeatability and is suitable for mechanism research and drug screening.

The application discloses a connecting support and a battery assembly. The connecting support comprises a support body and a circuit assembly. The support body comprises a main body part and a blocking part. The main body part is used for mounting an explosion-proof valve of a battery. The blocking part is connected with the main body part. The circuit assembly is at least partially used for shielding the explosion-proof valve. The blocking part is located between the circuit assembly and the explosion-proof valve and is spaced from the circuit assembly and the explosion-proof valve, so as to isolate the sprayed material of the explosion-proof valve from the circuit assembly when the explosion-proof valve is depressurized. Compared with the prior art, the application successfully isolates the direct contact between the sprayed material and the circuit assembly by arranging the blocking part between the circuit assembly and the explosion-proof valve. The blocking part effectively protects the circuit assembly, ensures that the circuit assembly can still work normally under extreme conditions, and provides stable voltage monitoring and signal transmission functions. The safety and reliability of the battery assembly are significantly improved by using the connecting support.

The invention discloses a telescopic clamping module of a gamepad and the gamepad, and aims to solve the problems that an existing telescopic gamepad integrated clamping structure is complex in mold opening, high in cost and poor in compatibility, and the whole gamepad needs to be scrapped after a clamping part is damaged. The telescopic clamping module comprises a fixed shell and a movable shell which can slide in a telescopic mode relatively, a reset spring is connected between the fixed shell and the movable shell, and fixed ends are arranged at one ends of the outer sides to be connected with a gamepad shell. The fixed shell and / or the movable shell are / is provided with a clamping part, an anti-sliding / anti-abrasion pad is arranged on the front face of the fixed shell, one anti-sliding / anti-abrasion pad is provided with a sliding channel / rail, and the other anti-sliding / anti-abrasion pad is slidably installed in a matched mode. The gamepad comprises a left gamepad, a right gamepad and the telescopic clamping module, and the fixed shell and the movable shell are fixed to the two gamepads respectively. The telescopic clamping function is independent into a module, the design of a handle shell is simplified, the mold opening cost is reduced, clamping is stable, assembling is flexible, a damaged module can be independently replaced, the situation that the whole handle is scrapped is avoided, and the handle is adaptive to a mobile phone or a tablet personal computer.

The application discloses an engineered exosome targeting human urokinase-type plasminogen activator receptor uPAR and a preparation method and application thereof. Firstly, a high-affinity anti-human uPAR single-domain antibody VHH is prepared; then, a human umbilical cord mesenchymal stem cell engineering cell line expressing a VHH-PTGFRN fusion protein is constructed, and the engineered exosome is prepared and purified by combining three-dimensional hypoxic culture, chemical induction and size-exclusion chromatography technology. The engineered exosome comprises four comparative samples, wherein the core sample Exo^(VHH / miR) can simultaneously display the anti-uPAR VHH on the membrane surface to realize targeted delivery and enrich miR-193b-3p in the chamber to realize gene silencing, and the synergistic effect of the two can efficiently remove the uPAR high-expression senescent cells and inhibit the senescence-associated secretory phenotype SASP. The engineered exosome has the advantages of standardized preparation process, high yield and high purity, strong targeting, excellent curative effect and good safety, and can be used for preparing a treatment preparation for anti-aging and aging-related diseases, and has important clinical application value.

The application belongs to the technical field of wind tunnel test, and discloses a semi-mould loading device control system and a control method thereof. The semi-mould loading device control system is used for controlling four electric cylinders of the semi-mould loading device, and realizes Fx, Fy, Mx, My and Mz value loading of the semi-mould balance through the four electric cylinders. The semi-mould loading device control system takes a main control computer and an embedded ARM controller as a core control unit, is responsible for collection and processing of all signals, controls a running position of the electric cylinder, and has a prompt function of motion and state. The semi-mould loading device control system comprises the main control computer, the embedded ARM controller and control circuits corresponding to the electric cylinders. The control method comprises power-on self-checking of the control system, load rationality inspection, calculation of a tensile and compressive force sensor target value, current loading direction loading, current loading direction unloading, loading direction replacement and completion of all load group loading. Through automatic control, simple and convenient operation is realized.

The present application belongs to the field of nutritional composition and biological medicine technology, and particularly relates to a composition for protecting and preserving liver, a preparation method, application and product thereof. The composition of the present application is composed of extract of Silybum marianum, glucoraphanin and extract of Cynara scolymus. The composition of the present application can intervene the pathological process of liver injury from multiple dimensions such as antioxidation, anti-inflammation, regulation of lipid metabolism and repair of hepatocytes through synergistic effect of the three components, significantly reduces the levels of glutamic-pyruvic transaminase and glutamic-oxalacetic transaminase, reduces the accumulation of liver fat, improves the antioxidant capacity of the body, effectively prevents or improves alcoholic, chemical, non-alcoholic fatty and autoimmune liver injury, delays the progression of liver fibrosis, and comprehensively maintains the structural integrity and functional stability of the liver.

The invention relates to a carrier for realizing long-acting controlled release of cinnamyl aldehyde based on synergism of bacterial cellulose and polylactic acid, a preparation method of the carrier and application of the carrier in fresh keeping of fruits and vegetables, and the preparation method comprises the following steps: firstly, placing the bacterial cellulose in a deep eutectic solvent system containing citric acid, glycerol and choline chloride, and heating for reaction to obtain CABC; then, the CABC is placed in an activation system containing the 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and the N-hydroxysuccinimide, and CABC-ONH2 is obtained; then, the CABC-ONH2 and cinnamyl aldehyde are subjected to an oximation reaction, and CABC / CIN is obtained; and finally, mixing CABC / CIN with polylactic acid to form a film, so as to obtain the bacterial cellulose / polylactic acid synergistic cinnamyl aldehyde long-acting controlled release carrier. Compared with the prior art, initial burst release of CIN in the degradable carrier is effectively reduced, and the release stability and activity retention rate in the middle and later periods are improved; the cooperative processing suitability with PLA is improved; the antibacterial and antioxidant effects are simultaneously realized in the fruit and vegetable fresh-keeping application.

The present application belongs to the technical field of pump body mechanical seal auxiliary device, and relates to a pump body mechanical seal anti-evacuation device and anti-evacuation method, which comprises a defoaming auxiliary impeller located between a main impeller and an outer mechanical seal static ring, a flow monitoring flow interruption assembly installed on a pump body liquid inlet port, a mechanical seal vibration sensor arranged at the pump body mechanical seal, and a control cabinet in communication connection with the pump body, the mechanical seal vibration sensor and the flow monitoring flow interruption assembly. The defoaming auxiliary impeller is used to destroy the bubble structure in the slurry, reduce the phenomenon of evacuation caused by foaming slurry, and reduce the impact of pump body vibration on the mechanical seal, so as to slow down the wear speed of the dynamic ring and the static ring. The flow monitoring flow interruption assembly and the mechanical seal vibration sensor are used to monitor the medium flow and the mechanical seal vibration in real time, and feedback signals, so that the monitoring personnel can obtain the working information of each part of the pump body in time, realize the rapid response and accurate treatment of the mechanical seal area evacuation problem, and form a triple protection monitoring in cooperation with the defoaming auxiliary impeller, thereby improving the accuracy and timeliness of the anti-evacuation.

The utility model provides a quick assembly and disassembly type swivel joint relates to swivel joint technical field, including the mounting bush, the first limit ring is fixedly connected with the mounting bush outer surface, the movable bush is sleeved with the mounting bush outer surface, the rotary connection pipe is sleeved with the mounting bush inboard. In the utility model, when connecting the mounting bush and the rotary connection pipe, first need to move the movable bush to the active state, provide the space for the insertion of rotary connection pipe, after promoting the movable bush, the rotary connection pipe can enter the mounting bush smoothly, the force that adds promotes the interaction of movable ball and movable rod, forms the activity space, and further creates the condition for the insertion of rotary connection pipe, after the insertion of rotary connection pipe, the elasticity of spring makes the movable bush restore the original position, promotes movable ball movement, further drives movable rod displacement, until movable ball is guided limit groove, ensure that the rotary connection pipe is accurate limit, prevent the separation, limit groove not only limit the separation, still guarantee that the rotary connection pipe can rotate freely after the insertion.

The invention discloses an oral intersection protective film for improving sexual interest and preventing sexually transmitted diseases and a preparation method, and relates to the technical field of medical instruments, the preparation method comprises the following steps: S1, preparation of a base material film: preparing a base material layer film with the thickness of 10-50 microns by adopting waterborne polyurethane resin through a tape casting method or a film blowing method; s2, constructing a composite functional layer: uniformly dispersing the antibacterial and antiviral agent in a waterborne polyurethane solution, coating one surface of the base material layer with a precise coating device to form the composite functional layer, and drying and curing at 50-70 DEG C. The composite functional layer is arranged and contains an effective amount of broad-spectrum antibacterial and antiviral agent, so that the antibacterial and antiviral composite material is obtained. The infection risk of sexually transmitted diseases can be remarkably reduced, and the use safety is improved. Meanwhile, a microencapsulated and embedded food-grade flavoring agent and a warm and hot sensing preparation are adopted in the sensory enhancement layer, so that a pleasant flavor can be released and a comfortable warm and hot sense can be generated in the use process, and sexual interest experience is effectively improved.

A hot forging steel piston skirt trimming-punching-finishing three-in-one device and processing method for inhibiting hot deformation belong to the technical field of mechanical processing, and are directed to trimming punching production process control of hot forging steel piston skirt forgings with flash or needing punching or both. The four process controls of holding, trimming, punching and finishing of the hot forging steel piston skirt are realized through mutual cooperation of three high-temperature-resistant die springs, and the precision of the piston skirt is greatly improved. The trimming device is simple in structure and safe, can be classified according to different specifications of different cylinder diameter piston skirts, and can meet the high-precision trimming requirements of all hot forging steel piston skirts. The present application innovatively proposes the technical scheme of "three sets of customized rectangular springs cooperative control + synchronous composite process", and for the first time realizes "one clamping and three processes completed simultaneously" of the hot forging steel piston skirt, solves the hot deformation and efficiency bottleneck from the aspects of process principle and structure design, and has remarkable creativity and practicality.

The utility model provides air treatment equipment which can comprise an equipment body, an air inlet and an air outlet. The air guide plate is rotatably arranged at the air outlet so as to open or close the air outlet; the air guide device is arranged on the air guide plate, the air guide device comprises a plurality of air guide blades which are movably arranged, and the air guide blades are used for adjusting the air outlet direction of the air outlet. According to the air treatment equipment, when air is supplied, air supplied out of the air outlet can have a wider coverage space by adjusting the opening angle of the air guide plate and adjusting the relative air guide angle of the air guide blades in two stages, so that the indoor temperature adjusting efficiency is improved, and the comfort degree of a user is improved.

This utility model discloses an anti-loosening quick-installation and quick-disassembly locking device, belonging to the field of locking and installation technology. The utility model includes a lower base, sliding locking blocks, and an upper base. The lower base has three first slide rail positions and two second slide rail positions. Three sliding locking blocks are provided, with first and second sliders respectively located on both sides of the bottom end of each sliding locking block. Through optimization and upgrades, the design of the three sets of sliding locking blocks allows for smoother thread engagement and more stable function. It can be used for the installation of ordinary faucets as well as faucets with 2-4 hoses. The product can be pre-installed with hoses and tested for sealing before leaving the factory, eliminating the need to remove the hoses, improving product yield and reducing customer complaints. It achieves quick installation and disassembly, greatly reducing labor costs. The installed product effectively prevents loosening, solving the problem of loosening at its source. It is highly practical, low-cost, and suitable for widespread application.

The application discloses a kind of cell therapy injection constant temperature control integrated machine and its control method, belong to the technical field of therapeutic injection.The cell therapy injection constant temperature control integrated machine includes turnover box, oscillation and shaking mechanism, temperature regulation module and cell therapy injection flow control module.Oscillation and shaking mechanism is arranged in turnover box, can be stabilized clamped injection and oscillate and shake evenly when using, avoid injection breakage pollution, guarantee stem cell suspension state;Temperature regulation module can be accurately adjusted according to the requirement of transportation preservation, back to the inside temperature of turnover box, maintain stem cell activity and avoid cold stimulus;Flow control module can accurately control the flow rate of injection in output pipeline, adapt to different patient treatment needs.Four modules work together, realize cell therapy injection whole process safe and accurate control, simplify operation process, reduce medical work intensity, be convenient for multi-scene adaptation, provide strong guarantee for standardization of cell therapy.

The utility model discloses a kind of roller shutter door structures, it is related to roller shutter door technical field, to solve the problem that part of existing roller shutter door will influence shooting equipment identification accuracy. Its technical scheme main point is: including support frame and the taking and placing opening being penetrated and being set on support frame, and the roller shutter structure for plugging the taking and placing opening is dynamically connected on support frame, and the roller shutter structure includes two roller shutter parts at the length direction two sides of the taking and placing opening and two drive parts for driving the closure of roller shutter part, and the taking and placing opening is surrounded between two roller shutter parts, and the roller shutter part at taking and placing opening is fixedly connected with connecting frame, and camera and fiber-optic sensor inside support frame are respectively fixedly connected on two connecting frames. The utility model is set to make that shooting equipment can better realize the function of identification.

The application belongs to the technical field of refractory materials, and particularly relates to a composite castable for a coal injection pipe of a cement kiln, a preparation method and application, which comprises the following components in percentage by weight: zircon mullite aggregate: 45-55%; silicon carbide particles: 15-20%; dispersible alumina micropowder: 8-12%; calcium aluminate cement: 4-6%; rare earth modified silica ash: 3-5%, the SiO2 content of the rare earth modified silica ash is greater than or equal to 94%, and 0.5-1.5 wt% of Y2O3 is doped; ZrO2-TiO2-Al2O3 precursor powder: 3-5%; water reducing agent: 0.1-0.3%; retarder: 0.05-0.1%; and the balance is water. 4+ The castable of the application adds ZrO2-TiO2-Al2O3 precursor powder, in-situ reacts at 1100-1300 DEG C, dynamically matches micro-expansion and sintering shrinkage, avoids cracking, Zr doping significantly improves thermal stability, once formed, the Zr-doped aluminum titanate crystal phase does not decompose or reverse in a high-temperature environment in subsequent service, and can maintain structural stability.

This invention discloses a strain of *Bosea vestrisii* and its application in promoting plant growth and improving salt tolerance. This strain is deposited at the China Center for Type Culture Collection (CCTCC) under accession number CCTCC M 2026307. *Bosea vestrisii* exhibits strong salt tolerance and possesses multiple growth-promoting functions, including secreting indoleacetic acid (IAA), synthesizing extracellular polysaccharides, and biological nitrogen fixation. Experiments show that applying this strain to wheat roots significantly increases plant height, root length, and biomass under salt stress, and enhances the activity of antioxidant enzymes (such as catalase, peroxidase, and superoxide dismutase) in the plant, effectively alleviating oxidative damage caused by salt stress. This invention provides a highly efficient and environmentally friendly microbial resource for improving saline-alkali soils, enhancing crop stress tolerance, and achieving sustainable agriculture.

The invention relates to the technical field of microorganisms, in particular to a multifunctional lactobacillus paracasei strain capable of promoting growth and development and application of the multifunctional lactobacillus paracasei strain. The Latin name of the multifunctional Lactobacillus paracasei strain is Lacticaseibacillus paracasei ZG1, the preservation number of the multifunctional Lactobacillus paracasei strain is CGMCC No.36863, the preservation date of the multifunctional Lactobacillus paracasei strain is December 5, 2025, and the preservation unit of the multifunctional Lactobacillus paracasei strain is China General Microbiological Culture Collection Center. Experiments prove that the multifunctional lactobacillus paracasei strain has the functions of promoting neurocognitive development, immune system maturation and bone growth, and can be added into an infant probiotic preparation to play a role in promoting growth and development. Compared with existing probiotics, the lactobacillus paracasei ZG1 has a multi-target and multi-system synergistic promotion function on growth and development, is expected to replace a traditional mixed probiotic scheme, and fundamentally solves the core problems of single function, mixed antagonism and the like of most of existing probiotics.

This invention discloses a narrowband reflector waveguide and reflector based on a side-coupled Bragg grating resonant cavity, relating to the field of optoelectronics. It includes a main waveguide and a resonant cavity waveguide arranged in parallel. The main waveguide supports TE0 mode transmission, while the resonant cavity waveguide supports both TE0 and TE1 mode transmission. The main waveguide and the resonant cavity waveguide form an asymmetric directional coupling region through side coupling. A first resonant mode and a second resonant mode are formed within the resonant cavity waveguide. A TE0 mode optical signal is input to the main waveguide and coupled to the resonant cavity waveguide, where it is converted into a TE1 mode optical signal. Under the synergistic effect of the first and second resonant modes, the TE1 mode optical signal generates narrowband reflected light of the desired wavelength in TE1 mode. This TE1 mode narrowband reflected light is coupled back to the main waveguide and converted into TE0 mode narrowband reflected light, which is then output from the main waveguide. This narrowband reflector exhibits high reflectivity, narrow linewidth, high side-mode suppression ratio, and good process robustness.

The utility model discloses a portable municipal pipeline dredger, which relates to the technical field of pipeline dredgers and comprises a chassis, two universal wheels are symmetrically arranged on two sides of one end of the bottom surface of the chassis, two rollers are symmetrically arranged on two sides of the other end of the bottom surface of the chassis, a support is arranged on the peripheral side of the top surface of the chassis through fixing bolts, and an oil tank is mounted at one end of the top surface of the support. A water pipe winding frame is mounted on the bracket; the threaded rod on the chassis is matched with the supporting disc, so that the supporting height of equipment can be manually adjusted according to the terrain; through cooperation of threaded rods arranged in a cross shape and a U-shaped frame, the placement stability of the equipment in the complex terrain is improved, the U-shaped frame facilitates manual lifting from the two ends, and short-distance transfer of the equipment in the complex terrain is facilitated; finally, the problems that an existing universal wheel and an existing idler wheel are difficult to adapt to complex terrains and need to be lifted manually are solved, and the operation convenience and working efficiency of equipment in the complex environment are improved.

The utility model relates to an inflation valve and inflation article, and the inflation valve comprises a valve seat, a valve core and an inner cover, the valve core comprises rotation parts, moving parts, guide seats and sealing sheets which are sequentially arranged from an air inlet end to an air outlet end, the inflation valve has three states of one-way air inlet, one-way air outlet and two-way ventilation, the valve core structure design can realize the quick switching of the three states, and fundamentally solves the defects of single function and state switching by disassembling and replacing parts of the existing inflation valve.

This application provides a storage device, a warehousing robot, and a warehousing system, relating to the field of warehousing technology. The storage device includes a crossbeam and two extension arms. The crossbeam extends along a first direction, and the two extension arms are arranged at intervals relative to each other along the first direction. Each extension arm includes a first end and a second end. The first end is fixedly connected to the crossbeam, and the second end extends away from the crossbeam along a second direction. Both the first and second directions are located on a horizontal plane, and the first and second directions form an angle. Each extension arm includes a bearing surface, and the bearing surfaces of the two extension arms together form a storage position for holding a material box. Each extension arm includes a first guide portion and a second guide portion. The first guide portion guides the material box into the storage position when its entry direction is parallel to the vertical direction, and the second guide portion guides the material box into the storage position when its entry direction is parallel to the second direction. This storage device can adapt to various application scenarios and improve the user experience.

The invention discloses a double-layer dripping nutritional microbead composition and a preparation method thereof, and relates to the technical field of biological medicine, the composition comprises: an inner core phase comprising an aqueous carrier, a hydrophobic carrier matrix, a polyol moisturizing system, a gel forming precursor and a thickening stabilizer; the shell phase comprises a water phase matrix, an auxiliary thickening agent, an ionic cross-linking agent, a bioactive factor, a functional component and an auxiliary functional agent; the core phase and the shell phase are subjected to an ionic cross-linking reaction to form microspheres; the preparation method comprises the following steps: preparing an inner core phase and a shell phase; performing vacuum degassing; synchronously extruding through a coaxial double-channel spray head, and dripping molded micro-beads in cooling silicone oil; and screening, cleaning and storing the microbeads in xanthan gum hydrogel. According to the invention, efficient encapsulation and space-time controlled release of heat-sensitive and multi-component nutrients are realized, the process is mild, no organic solvent or high temperature is needed, the method is suitable for the fields of cosmetics, nutritional supplements and the like, and the problems of nutrition inactivation, component interference and uncontrollable release are effectively solved.

This invention belongs to the field of gemstone testing technology, specifically a ruby ​​fluorescence detection system, including a central control module, a sensor module, an irradiation module, a detection module, and a display module. The central control module can operate and manage the entire ruby ​​fluorescence detection system, facilitating its use by operators. The central control module includes a signal receiving module and a signal transmitting module. The signal receiving module receives the detection results from the detection module and displays them on the display module. The sensor module includes a signal relay module. By setting multiple fixing blocks on the top of the first placement frame to support and fix the ruby ​​placed inside the detection machine, the system achieves better stability of the ruby ​​during the detection process, effectively solving the problem of ruby ​​displacement during detection, which affects the detection results.

This utility model discloses a punch holder, relating to the field of mold technology, aiming to solve the problem that some existing punch holders require complete replacement after damage, resulting in high costs. The key technical points are: it includes a support base for detachable connection with a drive roller; one end face of the support base is set as an arc surface with the same radius as the drive roller; a through groove is formed at the center of the support base in the thickness direction; and a mounting groove is formed concentrically at the opening of the through groove on one side of the arc surface, into which a detachable die head block is fitted. This utility model changes the structure of the punch holder through structural design, thus eliminating the need for complete replacement after damage, saving production costs.