97 results about "Oxygen deficiency" patented technology

The invention discloses a vehicle monitoring method and device based on multi-modal fusion perception. The method comprises the steps that when it is monitored that a vehicle enters a locked state, the pressure change of a seat in the vehicle or the micro-motion characteristic of a detained object in the vehicle is collected; when the pressure change or the micro-motion feature meets an event triggering condition, triggering equipment in the vehicle to start, and collecting image feature information and audio feature information of the retained object; obtaining time-frequency spectrum feature information; processing the three kinds of information by using a feature fusion model to obtain joint reliability; when the joint reliability is higher than a reliability threshold, generating an emergency processing strategy; and according to the emergency processing strategy, the vehicle is triggered to conduct air exchange or ventilation operation. According to the invention, the technical problem of accidents caused by high temperature or oxygen deficit and the like in the vehicle due to the fact that a single sensing mode of a vehicle monitoring system in the related technology is difficult to effectively detect whether life bodies are retained in the vehicle in a vehicle locking state and an emergency processing strategy cannot be taken in time is solved.

The invention discloses compost treatment equipment for organic fertilizer processing, and relates to the technical field of compost, the compost treatment equipment comprises a compost mechanism, a stirring mechanism and air injection mechanisms, the stirring mechanism is mounted on the compost mechanism, and multiple groups of air injection mechanisms are mounted on the stirring mechanism. The diameters of the spiral blades are gradually increased from bottom to top, the small-diameter blades at the bottom can lift and pull deep dense materials upwards, the large-diameter blades at the top can scatter the materials at a high position to form full-pile turning, meanwhile, the air injection mechanism synchronously rotates along with the stirring hollow rod, and after an air source enters the stirring hollow rod through the air inlet cylinder, the stirring hollow rod is driven to rotate. Under the matching action of a fixed cam and a spring, an end exhaust hole and a waist exhaust hole of an air injection communicating pipe are opened and closed at proper time, air is accurately injected into a turned material, the material is in full contact with oxygen while being turned, the contact area and efficiency of the material and the air are greatly improved, the local oxygen deficit problem is effectively avoided, and the service life of the material is prolonged. Uniform decomposition of compost materials is promoted, and the composting period is shortened.

The invention discloses a pressure pipeline welding arc-shaped gasket device in the technical field of pipeline welding, which comprises a machine body frame, a mechanical arm and a reducing mechanism, and further comprises a retainer detachably connected with the machine body frame, a plurality of sections of gasket brackets are uniformly distributed on the periphery of the retainer in the circumferential direction, and the sections of gasket brackets can be sequentially spliced end to end to form a ring; each section of gasket support is provided with a gasket assembly capable of being in butt joint through a quick release structure, a driving piece and a limiting piece are installed on the retainer, the driving piece can control all the gasket supports to synchronously rotate around the radial axes of the gasket supports, and the limiting piece assists the gasket supports in synchronous radial displacement in the rotating process. According to the method, the problems that in existing large pressure pipeline circular seam root welding, workers still need to enter the pipe for manual lining attaching, and consequently oxygen deficit poisoning radioactive high-risk operation is caused, the back face forming defect is caused by gasket circumference dislocation, and after-welding heat affected zone adhesion is difficult to detach are solved, so that limited space operation is thoroughly eliminated, and the welding seam quality and the construction efficiency are synchronously improved are solved.

The invention provides an environment-friendly high-temperature-resistant low-smoke halogen-free flame-retardant cable, relates to the technical field of cables, and solves the technical problems of material embrittlement, insufficient oxygen isolation, high temperature resistance and flexibility imbalance caused by high filling of a flame retardant in the prior art. The cable sequentially comprises a copper alloy conductor, a nano compound insulating layer, a ceramic oxygen barrier layer and a bio-based LSZH sheath layer from inside to outside, a material compound system realizes the balance of flame retardance and mechanical properties through nano inorganic flame retardance, organic synergistic flame retardance and base material modification, and the environmental protection property is improved by doping bio-based PLA; and through three-layer co-extrusion and sectional gradient irradiation crosslinking, the production efficiency and the product consistency are improved. The long-term working temperature of the cable is 150-180 DEG C, the flame retardant rating reaches class A, the smoke density is smaller than or equal to 100 Dm, the tensile strength is larger than or equal to 12 MPa, the fire-resistant time is larger than or equal to 180 min, and the material cost is reduced by 10-15%.

The invention relates to the technical field of fertilizer fermentation, in particular to an oxygen supply device and method for agricultural microbial fertilizer fermention.The oxygen supply device comprises a fermentation tank and a feeding port for feeding materials, and further comprises an oxygen deficit monitoring module and an oxygen deficit monitoring module, and the oxygen deficit monitoring module comprises inner side supporting rods arranged at different layer depths of the fermentation tank; an element analyzer, an oxygen sensor array and a microwave moisture meter are respectively arranged in the inner side supporting rod; the oxygen supply mechanism comprises a stirring aeration assembly and a nitrogen adding assembly; the stirring aeration assembly comprises a stirring spiral sheet which is rotatably arranged in the fermentation tank and a plurality of spiral connecting frames which extend along the radial direction of the stirring spiral sheet, and the wall part of each spiral connecting frame is provided with an aeration system which can be controlled to be opened and closed; the Roots blower is used for providing a gas source for the aeration system and discharging gas through the interior of the spiral connecting frame; the nitrogen adding assembly comprises a nitrogen storage cavity in which a nitrogen source is stored, and a nitrogen discharging pipe which is used for conveying gas and the nitrogen source into the fermentation tank and is provided with a nozzle.

The invention discloses equipment for putting fish fries into a pond, and belongs to the technical field of fish culture equipment. Comprising a lifting mechanism and a guiding and conveying mechanism, the guiding and conveying mechanism is arranged at the output end of the lifting mechanism and comprises a bearing assembly and a plurality of flow dividing assemblies, each flow dividing assembly comprises a floating pipe, a connecting pipe and two guiding parts, the right end of each connecting pipe is fixedly connected with the left end of the corresponding floating pipe, and an inserting groove is formed in the right end of each floating pipe; the guide part comprises a sealing plate and rotating shafts, overflow holes are symmetrically formed in the front side and the rear side of the floating pipe, the rotating shafts are vertically and rotatably installed on the side portions of the overflow holes, the sealing plate is vertically and rotatably arranged in the overflow holes and fixedly connected to the rotating shafts in a sleeving mode, and the two rotating shafts are connected through a linkage mechanism; a diversion assembly is arranged on the upper side of the floating pipe and used for drainage. The problem that fish fries are gathered in a local area within a short time and are prone to death due to crowding and oxygen deficit is effectively solved.

The invention discloses a diving protective mask supporting temporary oxygen supply in emergency, and relates to the technical field of diving equipment, the diving protective mask comprises a mask body, a breathing tube body connected with the mask body and a soft silica gel membrane arranged at one end of the breathing tube body, and further comprises a gas inlet and outlet mechanism arranged on the outer wall of the breathing tube body, the temporary oxygen generation mechanism is arranged at the bottom of the outer wall of the breathing tube body, and a small amount of oxygen can be temporarily provided when a diver encounters an emergency of oxygen deficit underwater through the temporary oxygen generation mechanism and the gas inlet and outlet mechanism, so that the brain oxygen deficit state is relieved, and when the diver encounters the oxygen deficit condition, the oxygen deficit state is relieved. When the diver is in use, 'suffocated gas' is blown into the bottom bin and reacts with sodium peroxide filled in the loading box to generate a small amount of oxygen, and then the diver can directly inhale the oxygen, so that the diver recovers consciousness, subconscious water inhaling is avoided, and a self-rescue opportunity can be provided for the diver in emergency situations.

The invention discloses a gas control device for a coal face, and belongs to the technical field of gas control. Comprising a supply mechanism used for supplying air to a device placement position, and a detection mechanism and a collection mechanism are arranged on the supply mechanism; by arranging the detection mechanism, when the detector detects that the concentration of gas around the device rises to a preset safety early warning value, the collection mechanism is automatically started, accumulated gas is forcibly discharged into the gas collection pipe, and advanced treatment and quick response to gas hidden dangers are achieved; air supply, gas extraction and dust filtration are integrated into a single device, a supply mechanism can supplement fresh air to the deep position of a working face, and oxygen deficit is prevented; the collecting mechanism can actively extract high-concentration gas from the source of the coal mining machine, and dust is filtered before the gas enters a conveying pipeline; and the detection mechanism is used for monitoring the gas concentration around the device placement point in real time and treating locally accumulated gas.

The application discloses a circulating fluidized bed boiler with ash partition measurement, comprising: a furnace, a separator and an ash parameter analysis system; the furnace has at least two regions in the circumferential direction, and a bottom slag sampling device for obtaining a bottom slag sample of each region is arranged below each region; a separator is correspondingly arranged above each region, and a fly ash sampling device is arranged at the separator outlet flue at the top of each separator, which is used for obtaining a fly ash sample of the corresponding region; the ash parameter analysis system is in communication with the bottom slag sampling device and the fly ash sampling device. The ash parameter partition measurement method is adopted to quickly obtain the particle size distribution and carbon content of the ash in different regions, the obtained data are used to guide the operation personnel to accurately adjust the fuel quantity, air quantity, circulating material and slag discharge quantity of different regions, the local fluidization is reduced, the combustion in the oxygen deficiency region is improved, the content of combustible substances in the ash is reduced, and the overall fuel combustion efficiency is improved.

The invention discloses a closed sputum suction system with automatic drainage and liquid level alarming functions, and particularly relates to the technical field of drainage and sputum suction, the closed sputum suction system comprises a drainage cover, the upper surface of the drainage cover is communicated with a liquid inlet pipe, and a drainage head is inserted above the liquid inlet pipe; the separating piece is located on the outer wall of the drainage head, and a plurality of limiting strips are installed on the separating piece; the covering part is arranged below the separating part, and a protective block is arranged on the covering part; and the negative pressure head is positioned above the drainage cover and is far away from the liquid inlet pipe. The sputum suction system has the advantages that the possibility of over-limit operation of the sputum suction system is directly eradicated, mucous membrane injury and patient hypoxia risks caused by violation or misoperation of medical staff are effectively avoided, and the safety of drainage and sputum suction is remarkably improved, so that the problem that if the doctor's advice is not strictly followed, the operation is still forcibly continued after the number of sputum suction times specified by a doctor is reached, and the sputum suction efficiency is greatly improved is solved. The safety of drainage and sputum suction of the patient is greatly reduced due to violation or misoperation, and the risk of complications of the patient is increased.

The invention relates to the technical field of biological agriculture and related industries, and discloses livestock and poultry manure compost fermentation equipment based on antibiotic influence exploration, the livestock and poultry manure compost fermentation equipment comprises a fermentation tank with a feed valve and a discharge valve, and a support frame arranged at the bottom of the fermentation tank, a mixing rod communicated with the interior of the rotating cylinder is arranged on the cylinder wall of the rotating cylinder, an air inlet pipe is arranged at the bottom of the rotating cylinder, and a vent hole is formed in the top of the fermentation tank; the material mixing rod comprises an L-shaped plate arranged on the cylinder wall of the rotating cylinder, an inclined plate arranged on the outer wall of the L-shaped plate and crushing teeth arranged on the outer wall of the inclined plate; a first oxygen feeding hole is formed in the outer wall of the vertical section of the L-shaped plate, and a second oxygen feeding hole is formed in the bottom face of the transverse section of the L-shaped plate. The device overcomes the defect that in the prior art, oxygen supplementation cannot be dynamically regulated and controlled according to the internal temperature and the anoxic state of a pile body.

The invention discloses an oxygenation drip irrigation method for saline-alkali soil crops and application of the oxygenation drip irrigation method, and belongs to the technical field of agricultural irrigation. The method comprises the steps of supplying irrigation water with the dissolved oxygen content of 10-15 mg / L to roots through a drip irrigation system in the key period of vegetative growth of crops, and carrying out oxygenation drip irrigation operation for at least two times. The invention further particularly provides a method for adjusting the enzyme activity of the soil in the root zone of the crop based on the saline-alkali soil oxygenation drip irrigation and an oxygenation drip irrigation method for improving the yield of the crops in the saline-alkali soil. The core of the method lies in that the time, frequency and oxygen concentration of oxygenation irrigation are accurately controlled, the problem of oxygen deficit of the saline-alkali soil crop root zone is effectively relieved, and therefore the soil micro-ecological environment is improved, root development and plant growth are promoted, and finally collaborative improvement of the crop yield and quality is achieved.

1. The name of the product under this design: oxygen concentrator. 2. Purpose of this product design: used to provide oxygen to people suffering from oxygen deficiency in medical institutions, homes, etc. 3. The key design point of this appearance design product lies in the overall shape of the product. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 2.

1. The name of the product under this design: Oxygen Concentrator (DN Series). 2. Purpose of this product design: used to provide oxygen to people suffering from oxygen deficiency in medical institutions, homes, etc. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.

The invention relates to the technical field of rapid hemostasis application, in particular to a rapid compression hemostasis device which comprises a compression hemostasis block, two positioning clamping belts and an elastic buckling belt, and the rapid compression hemostasis device not only conducts physical compression hemostasis on a wound through the compression hemostasis block, but also combines the function of medicine hemostasis. The compression ring in the compression hemostasis block can accurately compress the periphery of a wound, the bleeding amount is reduced, the medicine block enables hemostasis medicine to directly act on the wound through the medicine penetrating layer, and the hemostasis effect is enhanced. In a battlefield or an emergency medical scene, bleeding can not be completely controlled by purely relying on compression hemostasis, but the hemostasis efficiency can be remarkably improved and the blood loss risk can be reduced by adding the medicine. In addition, due to the design of the cotton ring and the medicine permeating layer of the medicine block, air permeability of the wound can be kept, it can be guaranteed that medicine continuously acts on the wound, and wound oxygen deficit or infection caused by too tight compression is avoided.

The utility model relates to the technical field of seedling culture, in particular to an oxygenation and heat preservation device for seedling culture, which comprises a protective top cover, a digital display temperature controller, an oxygen pump, an air delivery pipe, a temperature control assembly and an oxygenation adjusting assembly, the protective top cover is clamped at the top of a culture pond body, and the digital display temperature controller is mounted on the outer side of the bottom of the culture pond body; the oxygen pump is in threaded connection to the inner side of the top of the culture pond body, the gas delivery pipe is fixedly connected to the outer side of the input end of the oxygen pump, the temperature control assemblies are installed on the two sides of the bottom of the culture pond body, and the oxygenation adjusting assembly is installed on the outer side of the output end of the oxygen pump. According to the oxygenation and heat preservation device for seedling culture, by introducing the oxygenation adjusting assembly, the device can provide oxygenation for different water levels in the culture pond body, exchange and mixing of the upper water layer and the lower water layer are effectively promoted, the layering phenomenon of the water body is prevented, and it is ensured that the lower water body can obtain sufficient dissolved oxygen; therefore, the problem of death of organisms in the lower-layer water body due to oxygen deficit is avoided.

The utility model relates to a PE ball valve auxiliary device which comprises an extension pipe used for extending the length of a protective pipe in a double-diffusion PE ball valve and a gas guide pipe used for conveying gas released by a diffusion valve in the double-diffusion PE ball valve, a supporting strip is arranged between the extension pipe and the gas guide pipe, and the extension pipe and the gas guide pipe are both detachably connected with the supporting strip. The problems that in the prior art, in-out and operation are inconvenient due to the fact that the space in a valve well is narrow, and the risks of oxygen deficit, poisoning, suffocation and the like are high when operation is conducted in the narrow space in the valve well are solved.

The present invention discloses a temperature-difference gravity flow control device and method for improving oxygen deficiency at the bottom layer of a lake or reservoir, comprising an unmanned boat arranged on the water surface, the unmanned boat being provided with a bottom-penetrating sonar for measuring underwater topography, the unmanned boat being provided with a liftable multi-parameter water quality sensor, a water outlet and a water suction port, the water suction port being connected to one end of a water pump in the cabin through a hose, the other end of the water pump being connected to an aerator inlet through a pipe, the aerator outlet being connected to a refrigerator inlet through a pipe, and the refrigerator outlet being connected to the water outlet through a hose; the present invention fully utilizes the temperature-difference gravity flow to increase the dissolved oxygen concentration in the bottom environment of a lake or reservoir.

This utility model discloses an aeration device for aquaculture, including a floating hull, a motor, and a water-spraying impeller. An aeration pipe is installed at the bottom of the floating hull. The motor is fixedly mounted on the floating hull, and the water-spraying impeller is fixedly mounted on the output shaft of the motor. The floating hull includes a buoy and a connecting rod. The motor and the buoy are fixedly connected via the connecting rod. A water-shoveling blade is installed on the side end face of the water-spraying impeller, and an axial flow impeller that cooperates with the aeration pipe is installed at the bottom of the impeller. This utility model has the advantages of synergistic surface water-spraying aeration and deep aeration, high air-water mixing efficiency, low energy consumption, and adaptability to different water depths, solving the problems of stratified aeration, oxygen deficiency at the bottom layer, and high energy consumption in traditional equipment.

The invention discloses a continuous low-value waste plastic thermal cracking isolation incineration purification system which comprises a controller, a feeding mechanism, a furnace body and a smoke cooling purification system, the feeding mechanism, the furnace body and the smoke cooling purification system are connected with the controller, an isolation hood is arranged in the furnace body, and an inner cavity of the furnace body is divided into a pyrolysis cavity and a cracking combustion cavity which are independent from each other through the isolation hood; the input end of the flue gas cooling and purifying system is connected with the pyrolysis combustion cavity, the feeding mechanism is connected with the pyrolysis cavity, and an oil outlet mechanism is arranged at the lower end of the furnace body and connected with the pyrolysis cavity; an injection mechanism is arranged on the furnace body, the input end of the injection mechanism is connected with the pyrolysis cavity, and the output end of the injection mechanism is connected with the cracking combustion cavity. The furnace body is divided into the pyrolysis cavity and the cracking combustion cavity through the isolation cover, pyrolysis is conducted under the oxygen-free or oxygen-deficient condition, and generation of harmful substances such as dioxin is inhibited; combustible gas generated through pyrolysis can heat the pyrolysis cavity through high-temperature combustion of the pyrolysis combustion cavity, and the energy utilization rate is increased.

This utility model relates to the field of fish hypoxia monitoring and alarm technology, specifically a portable plug-in fish hypoxia monitoring alarm, including an alarm body with a power cord on its top; a storage mechanism located on the side wall of the alarm body for winding and storing the power cord; and a limiting mechanism located on the side wall of the alarm body for limiting the power cord wound and stored by the storage mechanism. The storage mechanism has an internal channel for the working end of the limiting mechanism to pass through. By incorporating this storage mechanism, the alarm body can be easily carried by staff, preventing the power cord from dragging on the ground due to its length, thus reducing inconvenience when carrying the alarm.

The invention provides a closed compartment environment intelligent monitoring and safety protection method and system, and belongs to the field of in-vehicle environment safety protection. The method comprises the following steps: acquiring a gas concentration parameter and a temperature parameter in a closed compartment in real time through a compartment environment acquisition module, and sending the parameters to a data calculation and control module; the data calculation and control module preprocesses the data, compares the data with a preset danger threshold value, and judges whether safety early warning is triggered or not; if the danger threshold value is reached, the data calculation and control module sends a prompt to a user, generates a CAN control instruction and sends the control instruction to the execution terminal module through a CAN bus; if the dangerous threshold value is not reached, continuing to receive the next round of collected data; and after receiving the CAN control instruction, the execution terminal module executes a corresponding compartment environment adjustment operation. According to the invention, intelligent monitoring and active safety protection of the closed compartment environment are realized in a simple and low-cost manner, and safety accidents caused by oxygen deficit and high temperature are effectively prevented.

This invention provides a tunnel ventilation construction method, belonging to the field of tunnel engineering. It includes: ventilation of the entrance work area and cross passage work area, using a single-machine, single-pipe forced-in method to inject fresh air into the excavation face; ventilation after tunnel breakthrough, utilizing cross passages for tunnel ventilation; and tunnel dust control, implementing dust control throughout the entire tunnel excavation stage. The aim is to solve the problems of turbulent airflow and insufficient air supply that are common in existing tunnel ventilation construction methods. The achieved technical effects are: avoiding localized oxygen deficiency and harmful gas accumulation caused by turbulent airflow, and significantly improving the air circulation and safety of the working face during tunnel ventilation construction.

The utility model discloses a high-dissolved-oxygen-content constructed wetland system for removing sulfonamide antibiotics. The high-dissolved-oxygen-content constructed wetland system comprises a shell, a filler module and a water supply module, the filler module is mounted in the shell, and a water outlet is formed in the shell; the filler module sequentially comprises a vermiculite filler layer, a sludge biochar composite filler layer and a ceramsite filler layer from top to bottom, the thickness of the vermiculite filler layer, the thickness of the sludge biochar composite filler layer and the thickness of the ceramsite filler layer are 20-40 cm respectively, and wetland plants are planted in the vermiculite filler layer; according to the vertical flow constructed wetland system, vermiculite, composite sludge biochar and ceramsite are used as fillers of the constructed wetland, and the internal structure and porosity of the vertical flow constructed wetland system are changed by adjusting the combination mode of the fillers and setting the height of the fillers, so that the content of dissolved oxygen in the system is increased, the activity of microorganisms in the system is ensured, and the service life of the system is prolonged. The additional aeration process due to insufficient oxygen is reduced, and the removal efficiency of the vertical flow constructed wetland on various pollutants is improved.

The invention discloses an oxygen-deficient double-metal hydroxide accelerant for biogas fermentation and a preparation method thereof and a fermentation method, the expression of the oxygen-deficient double-metal hydroxide accelerant for biogas fermentation is Vo-NiFe-LDH, Vo represents oxygen vacancy defect, LDH represents layered double-metal hydroxide, Vo represents oxygen vacancy defect, LDH represents layered double-metal hydroxide, Vo represents oxygen vacancy defect, and Vo represents oxygen vacancy defect. According to the accelerant and the method, the anaerobic digestion process can be optimized, the microbial metabolism efficiency is improved, and the stability of a system is enhanced.

The invention provides a high-hydrophobicity cerium manganese oxide modified PbO2 electrode and a method for degrading micro-plastics in water through ultrasonic-assisted electrocatalytic oxidation based on the electrode, and belongs to the field of water treatment technologies and electrochemistry. According to the high-hydrophobicity cerium manganese oxide modified PbO2 electrode, MnO2 in cerium manganese oxide is used for adjusting the oxygen deficiency concentration of CeO2 in a wide range, the oxygen storage and release capacity is changed, and the. OH free radical generation capacity of the electrode is improved. Meanwhile, the high hydrophobicity of the electrode is utilized, so that a large number of. OH free radicals generated on the surface of the electrode in the electrocatalytic oxidation process rapidly enter a solution, and the situation that the large number of. OH free radicals are wasted by oxygen evolution side reaction is avoided. On the basis of the electrode, regionalized hot spots are formed in an extremely small space around bubbles during ultrasonic cavitation, and extremely high temperature and pressure generated in the region are utilized to accelerate the reaction of. OH free radicals and micro-plastic and promote the. OH free radicals to enter micro-plastic particles, so that the micro-plastic particles are formed. And the efficiency of degrading the micro-plastic through electrocatalytic oxidation is improved by two times compared with that of a common electrode.

The embodiment of the utility model provides a forestry tree cultivation frame which comprises a support used for providing support; the ventilating base is positioned at the bottom of the bracket and is provided with a plurality of ventilating holes; the vertical ventilation pipe is arranged on one side or in the middle of the support and penetrates through the support, the lower end of the vertical ventilation pipe is led into the ventilation base, and the upper end of the vertical ventilation pipe extends to the position above the sapling planting soil surface; the automatic lifting adjusting mechanism is fixed above or inside the support and moves up and down to adjust the height of the support; the drainage channel system is arranged at the edge of the breathable base and is communicated with the outside of the cultivation frame; the ventilation holes of the ventilation base are arranged in a fan shape and are different in size, the large ventilation holes are formed in the periphery, and the small ventilation holes are distributed in the center. And one or more waterproof ventilation valves are arranged around the ventilation holes. Through the scheme of the embodiment of the invention, the problem that the plant roots are possibly damaged due to oxygen deficit or water accumulation can be solved.

To solve the aforementioned problem, the present invention is a multilayer film characterized in that a layer containing cerium oxide contains cerium oxide including a cubic crystal system polycrystal structure and a columnar structure, the film thickness of the layer containing cerium oxide is 85 nm or more and 800 nm or less, when the entire layer containing cerium oxide is defined as a region (A) and the oxygen deficiency rate of cerium oxide in the region (A) is defined as an oxygen deficiency rate (V A ), the oxygen deficiency rate (V A ) is 0.05% or more and 10% or less, the film thickness of a layer containing silicon oxide or a layer containing magnesium fluoride is 50 nm or more and 240 nm or less, and the refractive index of the low-refractive layer with respect to light with a wavelength of 500 nm is 1.65 or less.

The application belongs to the technical field of medical materials, and discloses a novel titanium-based implant material with oxygen release, antibacterial and bone formation promoting properties and a preparation method thereof. The titanium-based implant material comprises a titanium base material and calcium peroxide on the surface of the titanium base material. The application proposes that the dense or porous titanium-based implant material is modified by calcium peroxide. The characteristics of calcium peroxide itself, i.e., the reaction with water to release oxygen, hydrogen peroxide and calcium ions, and the biological activity of calcium ions in bone repair make the titanium-based implant material have application potential in preventing / relieving / treating bacterial infection of implants, oxygen deficiency of large-size bone defects and poor bone integration.

The invention discloses a Fe / Mn-coated CuO2 nano-enzyme with self-supply of hydrogen peroxide and a preparation method and application thereof, and belongs to a biological and new medical material technology, the method comprises the following steps: dissolving FeCl3 in ethylene glycol, then adding MnCl2 and NaAc, continuously stirring, and carrying out hydrothermal reaction and magnetic separation collection to obtain Fe / Mn; the preparation method comprises the following steps: dissolving CuCl2 in a polyvinylpyrrolidone solution, sequentially adding NaOH and H2O2, and violently stirring to obtain CuO2; the preparation method comprises the following steps: adding Fe / Mn and CuO2 into deionized water, and stirring at room temperature to obtain the Fe / Mn-coated CuO2 nano-enzyme with self-supply of hydrogen peroxide. Transition metals Fe and Mn form nano-enzyme which is connected with CuO2 nano-particles, and CuO2 is used as a donor of H2O2 and does not depend on outside H2O2 when playing an antibacterial role. Under the subacid condition, Cu < 2 + > and Fe < 3 + > released by the Fe / Mn-coated CuO2 nano-enzyme oxidize and consume glutathione in thalli, meanwhile, generated multiple heavy metal ions serve as a Fenton reaction agent to accelerate H2O2 decomposition and continuously generate active oxygen, oxygen deficiency is avoided, explosive local accumulation is reduced, the biocompatibility of the material is improved, and long-term antibiosis is achieved.