177 results about "High oxygen" patented technology

The invention discloses a molecular film type automotive nitrogen and oxygen separation device which comprises a turbocharger, a nitrogen and oxygen separator, a gas inlet valve, a gas outlet valve, a negative pressure pump and an electric control throttling valve. The turbocharger is driven by a turbine in an automobile turbocharger, so that the air is compressed to be conveyed to two paths of the nitrogen and oxygen separation device, the nitrogen and oxygen separation device can separate oxygen from the air, the air with high oxygen content is output, and the air is supplied to an engine for use through the gas outlet valve. The two paths of the nitrogen and oxygen separation device work alternately, when the temperature of the two paths of the nitrogen and oxygen separation device is too high to influence oxygen production efficiency, a main air inlet pipeline is opened to provide air normally by controlling the opening degree of the electric control throttling valve, and thus the phenomena of gas circuit plugging and engine stalling are avoided. According to the automotive nitrogen and oxygen separation device, the two branch paths work alternately, high concentration oxygen can be supplied to the engine continuously so that fuel can burn and act, and the burning utilization rate of the fuel is improved.

The invention discloses an intelligent cooperative regulation and control method and system for dissolved oxygen in a haematococcus culture solution, relates to the field of bioengineering, and controls a decision-making layer to dynamically switch between a growth promotion regulation and control mode and a stress induction regulation and control mode based on biomass data and physiological status data in a haematococcus culture stage so as to realize cooperative regulation and control of dissolved oxygen, illumination, pH and a carbon source. According to the method, a growth promotion mode and a stress induction mode are dynamically switched, biomass accumulation is promoted through dissolved oxygen sine wave pulse fluctuation in the vegetative period, astaxanthin synthesis is induced through high-oxygen and low-oxygen circulation and blue light regulation in the stress period, and compared with traditional static regulation, the biomass is increased, and the yield of astaxanthin is increased. A light-oxygen synergistic factor k is introduced to dynamically adjust the fluctuation range of dissolved oxygen, the problem of illumination-dissolved oxygen mismatching is solved, and the photosynthetic efficiency is improved; a stress intensity index SI is established, stress parameters are adaptively optimized based on the astaxanthin synthesis rate, cell damage caused by over-stress is avoided, and the stability of the astaxanthin synthesis rate in the stress period is improved.

The utility model discloses a VOC (volatile organic compound) lower liquid recovery device of a high-oxygen system, which belongs to the field of coking production equipment and comprises production devices capable of generating VOC waste gas in the working production process of the high-oxygen system, each production device is provided with an air entraining channel for collecting the VOC waste gas, each air entraining channel is communicated with a VOC recovery header pipe, the VOC recovery header pipe is obliquely arranged in the air, and the VOC recovery header pipe is communicated with the production devices. The end connected with the air entraining channel is a high end, the other end is a low end, the low end leads to the VOC alkaline washing tower and the VOC treatment device, the VOC recovery header pipe is provided with a fan used for supplying air to guide and convey VOC, the bottom of the middle end of the VOC recovery header pipe is provided with a plurality of liquid discharging pipelines used for collecting waste gas condensate, and the liquid discharging pipelines are connected and gathered to a liquid discharging storage tank. The lower liquid storage tank is connected with an alkali liquor bin of the VOC alkaline washing tower, and a lower liquid conveying pump used for conveying lower liquid to the VOC alkaline washing tower is arranged in the lower liquid storage tank. The device is simple in structure, waste liquid can be effectively recycled, and the problem of liquid expansion during production is avoided.

The invention provides an anti-inflammatory and anti-vascular bidirectional trapping combined self-luminous power compound based on neutrophil nano-vesicles as well as a preparation method and application thereof, and belongs to the technical field of biological medicine manufacturing. The compound takes a neutrophil nano-vesicle as a carrier, and is also loaded with bis (2, 4, 5-trichlorosalicylic acid n-amyl ester) oxalate (CPPO) and a photosensitizer Ce6, and meanwhile, the surface of the compound is modified with ranibizumab through ketal mercaptan responded by ROS (reactive oxygen species). The compound has the characteristics of trapping anti-inflammatory factors and spontaneously targeting corneal neovascularization diseased regions, Ranibizumab is responsively released on the basis of ROS to be combined with vascular endothelial growth factors, the anti-angiogenesis function is achieved, meanwhile, chemical energy generated by CPPO under the high-oxygen condition stimulates Ce6 to generate singlet oxygen, and therefore the vascular endothelial cell tubulogenesis capacity is inhibited. The invention provides a new means for treatment of eye disease related diseases.

The invention discloses a high-oxygen-permeability membrane material and a preparation method thereof, and belongs to the technical field of membrane materials. The membrane material is prepared by taking polydimethylsiloxane and polycaprolactone as organic raw materials, adding an inorganic material nano titanium dioxide or graphene, and carrying out solution preparation, cross-linking reaction, casting membrane formation, hot press molding, plasma treatment and surface modification. The polydimethylsiloxane guarantees the oxygen permeability, the polycaprolactone improves the flexibility and the biocompatibility, and the nano inorganic particles enhance the mechanical strength and the antibacterial property. The prepared membrane material is improved in oxygen permeability coefficient, greatly improved in tensile strength and elongation at break, good in hydrophilicity and biocompatibility, low in cytotoxicity and small in hemolysis rate, can be widely applied to medical products such as artificial lungs, wound dressings and contact lenses, and effectively meets the requirements of the medical field for the membrane material with high oxygen permeability and good comprehensive performance.

The invention particularly relates to a low-carbon robust short-cut nitrification process, which is used for low-carbon treatment of various ammonia-nitrogen-containing wastewater. The device has the characteristics that oxygen is supplied in a manner of combining micro-nano pre-aeration with external circulation, so that the device has higher oxygen supply uniformity, the reaction rate and the DO utilization rate in the short-cut nitrification reactor are greatly improved, meanwhile, accurate oxygen supply is realized, the oxygen supply energy consumption is effectively reduced, and carbon emission is reduced; according to the invention, oxygen is supplied in a manner of combining pre-aeration with external circulation, so that the concentration of DO in the short-cut nitrification reactor is ensured, meanwhile, N2O release caused by bubble disturbance is avoided, N2O emission factors in the short-cut nitrification process are effectively reduced, and low-carbon short-cut nitrification is realized; by coupling alkaline inhibition and salt inhibition, NOB activity is effectively controlled, and long-term stability of short-cut nitrification is realized.

The invention discloses an in-vitro perfusion system and an artery shunt calculation method, and belongs to the field of organ transplantation, an artery branch and a vein branch respectively extend out of a blood storage device and are correspondingly connected with an artery and a vein of an isolated organ in an organ bin, the artery branch is provided with an artery pump and an oxygenation structure, the vein branch is provided with a vein pump, and the oxygenation structure is connected with the vein pump. The first end of the shunt branch is connected with the artery branch, the second end of the shunt branch is connected with the vein branch, the first end is located between the oxygenation structure and the organ bin, and the second end is located between the vein pump and the blood storage device. Crosstalk of pressure flow between the two paths is avoided; monooxygenation is adopted, the hemolysis and consumable cost is reduced, only one gas control module is needed, the equipment cost is reduced, the vein oxygen saturation degree is adjusted to a proper range through the shunt branch, and arterial hyperxia and pulsation are achieved; the vein is hypoxia and constant in pressure.

The utility model relates to the technical field of rehabilitation medical treatment, and discloses a high-low oxygen training system which comprises an air compressor, a heat exchanger, a filtering device, an air separation device, an air storage bag and an exhalation valve assembly used for being connected with a breathing mask, and the air compressor, the heat exchanger, the filtering device, the air separation device, the air storage bag and the exhalation valve assembly are sequentially connected. The exhalation valve assembly is provided with an oxygen concentration sensor used for detecting the real-time oxygen concentration in the exhalation valve assembly, the oxygen concentration sensor is in signal connection with the flow control valve so as to send the measured real-time oxygen concentration to the flow control valve, and the flow control valve is used for adjusting the flow of oxygen and nitrogen entering the air storage bag. The flow control valve and the oxygen concentration sensor achieve closed-loop control, the flow of oxygen and the flow of nitrogen entering the gas storage bag can be adjusted according to the real-time oxygen concentration in the exhalation valve assembly, and therefore the oxygen concentration of gas in the gas storage bag is adjusted, namely the oxygen concentration of gas output by the exhalation valve assembly is adjusted. Accurate adjustment of low oxygen concentration and high oxygen concentration is achieved, and adaptability is higher.

Existing pulse oximeters have impaired accuracy in measuring blood oxygen levels (SpO2) in patients of color, where the presence of melanin in the skin tends to interfere with measurements of pulse oximetry, resulting in an overestimation of SpO2. Thus, the pulse oximeter often reports a higher oxygen saturation for patients with darker skin tones, often with increasing bias as the actual saturation (SaO2) decreases. This bias is further reinforced by calibration based on individuals with light skin pigmentation, which may lead to inequitable healthcare for patients of color. Our proposed solution is to modify current pulse oximetry calculations—which utilize the relative tissue absorbance of red and infrared light to estimate SpO2—to account for the concentration of melanin by additionally measuring the skin absorbance of UV˜A light. This derived concentration of melanin can then be used to modify the pulse oximetry algorithm output, thus estimating SpO2 more accurately for patients of color.

The invention relates to a fatigue life prediction method based on a physical failure mechanism in a liquid lead bismuth environment, and the method comprises the following steps: building a representative volume element model, and defining elements belonging to a slip band; defining a crystal plasticity constitutive equation; determining parameters in the crystal plasticity constitutive equation; calculating the average shear strain range of the slip band; carrying out a fracture toughness test to obtain specific fracture energy; establishing a fatigue life prediction model based on a physical failure mechanism; carrying out a symmetrically cyclic low-cycle fatigue test on the metal material in a predicted-temperature high-oxygen liquid lead bismuth environment to determine the thickness of an oxide film; and establishing a fatigue life prediction model in the high-oxygen-concentration liquid lead bismuth environment, and predicting the fatigue life of the metal material in the high-oxygen-concentration liquid lead bismuth environment. According to the method, the fatigue life in the liquid lead-bismuth environment can be predicted by carrying out a low-cycle fatigue test for calibrating crystal plasticity constitutive equation parameters in the air at the predicted temperature and a fracture toughness test in the air and liquid lead-bismuth environment.

A tuyere apparatus according to the present invention comprises: an outer circulation hole disposed on the outermost peripheral side inside a tuyere; and an inner circulation hole disposed on the inner peripheral side of the outer circulation hole. The inner circulation hole has two or more independent flow paths, the two or more independent flow paths being separated from the inner surface of the tuyere. A blast furnace operation method according to the present invention comprises, using the above-described blast furnace tuyere apparatus in a blast furnace: blowing a low oxygen concentration gas, a high oxygen concentration gas having an oxygen concentration higher than that of the low oxygen concentration gas, and a reduction material from the tuyere; blowing the low concentration oxygen gas from the outer circulation hole; blowing the high oxygen concentration gas and the reduction material from the inner circulation hole; and blowing the high oxygen concentration gas and the reduction material separately from the two or more independent flow paths.

The present invention discloses an air path structure in which an ordinary vacuum pump replaces a high-oxygen vacuum pump. The air path structure is connected to an upper mold cavity (1) and a lower mold cavity (2), and comprises a first compressed air path, a vacuum pump path, a fresh-keeping gas path, and a second compressed air path. The second compressed air path comprises a second compressed air pipeline. A solenoid valve E (11) is provided on the second compressed air pipeline. The second compressed air pipeline is connected to a pipeline connecting the fresh-keeping gas path and the vacuum pump path. The vacuum pump path is a vacuum pump path using an ordinary vacuum pump. The present invention adds an additional compressed air path to the ordinary vacuum pump path, thereby completely solving the adverse effects of high-concentration O2 on the vacuum pump.

The invention discloses a preparation method of a NM88B-POR / Rf nanozyme and its application. The method first in-situ dopes porphyrin in NM88B(Fe) (NM88B-POR), and then loads riboflavin (Rf) on NM88B-POR by electrodeposition, while realizing the sarcosine oxidase (SOx) nanozyme Rf and peroxidase nanozyme NM88B(Fe) enzyme cascade reaction to enhance the sarcosine (Sar) detection signal, and also enhances the capture of oxygen molecules in aqueous solution through the heme-like effect of the Fe-POR structure in NM88B-POR to construct a high oxygen microenvironment, thereby realizing highly sensitive electrochemical detection of Sar. The present invention establishes a new Sar enzyme cascade electrochemical detection strategy, and the heme-like Fe-POR structure in the constructed electrochemical nanozyme can also build a high-oxygen microenvironment by enhancing the capture of dissolved oxygen, solving the problem that the current Rf nanozyme can only biomimetic the SOx active center structure and ignores the fact that the capture of dissolved oxygen during the reaction process can significantly improve the reaction rate. The nanozyme ultimately achieves ultra-sensitive electrochemical detection of Sar through the synergistic effect of enzyme cascade and high-oxygen microenvironment.

The invention relates to the technical field of ferrite single-crystal materials, in particular to a treatment method for improving the ferromagnetic resonance line width of spinel NiZn ferrite single-crystal pellets, which comprises the following steps: annealing the spinel NiZn ferrite single-crystal pellets under the conditions of high oxygen pressure and high temperature, slowly cooling to room temperature, and releasing the pressure after the annealing is finished, thereby obtaining the spinel NiZn ferrite single-crystal pellets. According to the method, the NiZn ferrite single crystal pellets are subjected to annealing treatment by adopting a high-oxygen-pressure high-temperature annealing treatment process, the pellet processing stress can be released under the condition of inhibiting Zn element volatilization, the ferromagnetic resonance line width of the NiZn ferrite single crystal pellets can be effectively reduced, and subsequent pellet surface polishing treatment is also facilitated.

The invention discloses a gas purification system and a treatment method, the gas purification system is especially suitable for purifying nitrogen with high oxygen content, the gas purification system comprises a raw gas input unit, a gas distribution branch unit, a control system unit, a flow control unit, a gas mixing unit, a catalytic reaction unit, a heat exchange unit, a purity detection unit and an adsorption unit; the purity detection unit comprises an oxidizing and reducing impurity gas analyzer; the control system unit can be a single chip microcomputer, a PLC (Programmable Logic Controller), a computer and the like, receives a signal of the purity detection unit, and controls the flow control unit to compensate proper hydrogen after logical operation; the gas mixing unit is positioned behind the flow controller; by adopting the scheme, the oxygen content of the raw gas can be accurately calculated in real time, and hydrogen is supplemented according to the reaction molar ratio; the gas is completely removed in the catalytic reaction unit, so that the purification efficiency is improved to a certain extent.

To provide a gas barrier laminate that can be used as an intermediate layer constituting a packaging material laminate and has high oxygen barrier properties and water vapor barrier properties.SOLUTION: A gas barrier laminate has a gas barrier resin layer, and a polyolefin resin layer, the gas barrier resin layer and polyolefin resin layer being co-extruded stretched resin films.SELECTED DRAWING: Figure 1

The invention relates to the technical field of membrane materials, in particular to an asymmetric PMP hollow fiber membrane for blood oxygenation and a preparation method and application of the asymmetric PMP hollow fiber membrane. The PMP hollow fiber membrane comprises a main body, wherein the main body comprises a skin layer and a supporting layer; one side of the main body is an inner surface facing the inner cavity, and the other side of the main body is an outer surface; the side, away from the supporting layer, of the skin layer is an outer surface, and the side, away from the skin layer, of the supporting layer is an inner surface. The outer surface is a compact surface, and the thickness of the supporting layer is 68-118 microns; the ratio of the thickness of the supporting layer to the thickness of the PMP hollow fiber membrane is not less than 0.95; the helium flux of the PMP hollow fiber membrane is 1.5 ml / (cm < 2 > * min * bar)-3 ml / (cm < 2 > * min * bar); and the BET specific surface area of the PMP hollow fiber membrane is 30 m < 2 > / g-60 m < 2 > / g. The PMP hollow fiber membrane disclosed by the invention can have relatively high oxygen flux on the premise of having a relatively high separation ratio of carbon dioxide to oxygen, so that the PMP hollow fiber membrane has excellent oxygenation performance; and in addition, the high-toughness wire also has relatively high toughness and is not easy to break.

The present invention generally relates to an insert for embedding in a silicone hydrogel contact lens. The insert is made of a cross-linked material that is rigid in a dry state at room temperature (from about 22°C to about 26°C), has a high oxygen permeability and a high refractive index in a fully hydrated state, and can become softer at temperatures greater than 32°C. Such a material can be used to manufacture an insert for embedding in a contact lens to correct corneal astigmatism, presbyopia, and color blindness, and to impart photochromic properties to the lens. The present invention also relates to a method for manufacturing an embedded silicone hydrogel contact lens including the insert of the present invention, and to an embedded silicone hydrogel contact lens including the insert of the present invention.

The high-oxygen ischemia pre-adaptation device comprises a high-oxygen module and an ischemia pre-adaptation module, the high-oxygen module comprises an oxygen bottle, an oxygen electromagnetic valve and a nasal catheter, the oxygen bottle is fixedly connected with the input end of the nasal catheter through the oxygen electromagnetic valve, and the other end of the nasal catheter is used for a user to inhale oxygen; the ischemia pre-adaptation module comprises an air pump and an ischemia pre-adaptation assembly, the ischemia pre-adaptation assembly comprises a circuit control board, a high-pressure electromagnetic valve, a low-pressure electromagnetic valve, a pressure reducing valve and a cuff connecting pipe, the input end of the high-pressure electromagnetic valve is fixedly connected with the output end of the air pump, and the output end of the high-pressure electromagnetic valve is fixedly connected with the input end of the pressure reducing valve; the output end of the pressure reducing valve is fixedly connected with the input end of the low-pressure electromagnetic valve, and a cuff connecting pipe is arranged between the pressure reducing valve and the low-pressure electromagnetic valve and used for being connected with a cuff. The high-oxygen ischemia preconditioning device provided by the invention can better treat the user, and can shorten the treatment cycle, so that the treatment effect reaches an expected ideal level.

The invention discloses a nano powder preparation system based on arc plasma, and relates to the field of production of carbon nano materials and nano silicon nitride, in particular to a production process for synthesizing silicon nitride. At present, the problems that continuous production of nano materials is difficult, the oxygen content of products is high, the production process is difficult to control, and the structure of a production line is single exist, and the problems can be well solved by adding a negative pressure pumping air tightness detection device, a process device cooling pipe and a tail gas detection device. The invention also provides a device for effectively solving the problem of negative pressure in the device, further improving the problems of negative pressure detection and sealing performance detection in the device, and carrying out gas washing to ensure that only a small amount of air is left in the device, so that the product is not oxidized or is slightly oxidized, and the product with lower oxygen content and higher quality is obtained. The method is suitable for various plasmas or combined plasmas, can be used for preparing various nano materials, and is simple and diversified in production line.

The adsorber (234, 235) of the air conditioning device (100) in the storage separates the air outside the storage into a first gas with a high nitrogen concentration and a low oxygen concentration and a second gas with a low nitrogen concentration and a high oxygen concentration. The air conditioning device (100) in the storage performs a lowering operation and an increasing operation. In the lowering operation, the first gas is introduced into the interior of the storage (2) through the first gas passage (244), and the oxygen concentration of the air in the storage is reduced. In the increasing operation, the second gas is introduced into the interior of the storage (2) through the second gas passage (245), and the oxygen concentration of the air in the storage is increased.

The invention relates to equipment for preparing high-dissolved-oxygen small-molecule water. The equipment is characterized by comprising a small molecule device, a booster water pump, an RO (reverse osmosis) filter, water-oxygen fusion equipment, a pre-filter, an electromagnetic valve, a small molecule device, a booster water pump, an RO filter, water-oxygen fusion equipment and a control panel, the water inlet end of the pre-filter is communicated with an external water source, and the water outlet end of the pre-filter is communicated with the water inlet end of the electromagnetic valve; the water outlet end of the electromagnetic valve is communicated with the water inlet end of the small molecule device, and the water outlet end of the small molecule device is communicated with the water inlet end of the RO filter; a water inlet of the water-oxygen fusion equipment is communicated with the water outlet end of the RO filter, an oxygen inlet of the water-oxygen fusion equipment is communicated with external oxygen, and oxygen at the oxygen inlet and liquid at the water inlet are mixed and then discharged from a water outlet of the water-oxygen fusion equipment. The micromolecular water has high oxygen content, and has the effects of effectively eliminating fatigue, restoring physical strength, promoting digestion, enhancing metabolism, keeping vigorous energy and the like.

The present invention discloses a microbial fermentation device with high oxygen solubility, comprising a fermentation tank, a stirring rod coaxial with the fermentation tank, and an air outlet and a feed port both arranged on the fermentation tank, wherein an air supply device is arranged at the bottom of the fermentation tank, and a stirring blade is wound on the stirring rod, and the outer edge of the stirring blade is in contact with the inner wall of the fermentation tank. The stirring blade is wound on the stirring rod and the outer edge is in contact with the fermentation tank, a channel is formed between the stirring blade and the stirring rod, and the channel is several times the height of the fermentation tank, and the dissolved oxygen content of the liquid in the fermentation tank can be greatly increased due to the increase in the channel length and the increase in the contact time between the gas and the microorganism.

The invention belongs to the technical field of pharmacy, and particularly relates to application of AMG-487 in preparation of a medicine for treating premature infant retinopathy, and the medicine is used for treating the premature infant retinopathy by blocking combination of CXCL10 or / and CXCR3 in the ROP high oxygen period. Through research, the inventor finds that expression of CXCL10 in a blood sample of a patient with ROP is remarkably increased, TFR, HIF-1alpha, STAT3 and PTGS2 in a ferroptosis pathway have remarkable correlation with the CXCL10, AMG-487 can inhibit combination of CXCL10 / CXCR3 so as to reduce expression of TFR, HIF-1alpha, STAT3 and PTGS2 in the ferroptosis pathway, the effect of preventing and / or treating the retinopathy (ROP) of premature infants is achieved, ROP can be effectively treated, and the application prospect is wide. The compound is expected to become a novel medicine for treating ROP diseases and has important clinical application value.

The application provides a device system and a method for preparing isotopically labeled carbon dioxide, and the preparation method comprises the following steps: vaporizing heavy oxygen water, mixing the heavy oxygen water with carbon dioxide, catalyzing through a catalytic material, carrying out oxygen exchange reaction between the heavy oxygen water and the carbon dioxide, carrying out gas-liquid separation after the reaction, and obtaining isotopically labeled carbon dioxide. The device system provided by the application has the advantages of simple structure, wide source and low price of heavy oxygen water as an oxygen isotope source, oxygen exchange, replacement of oxygen-16 of conventional carbon dioxide by oxygen-18 of the heavy oxygen water, oxygen-18 isotopically labeled carbon dioxide products, simple process, green and pollution-free, high oxygen isotope utilization rate, mild separation and purification conditions, good economic benefits and application prospect.

A high-oxygen adaptive anti-aging oxygen-enhanced adaptive functional beverage formulated using advanced liposomal encapsulation, plant-based microencapsulation, and microbubble oxygenation technologies to enhance bioavailability, stability, and oxygen delivery. The oxygen-enhanced adaptive functional beverage improves cellular metabolism, mitochondrial function, and oxygen utilization, leading to increased energy levels, cognitive function, and oxidative stress resistance. By promoting efficient oxygen absorption and retention, the oxygen-enhanced adaptive functional beverage supports healthy aging, athletic performance, and high-altitude adaptation. The oxygen-enhanced adaptive functional beverage incorporates bioactive compounds, antioxidants, and essential nutrients, ensuring prolonged effectiveness and enhanced physiological benefits.

The invention relates to the technical field of solid oxide electrolytic cells, in particular to an A-site high-entropy perovskite oxide with oxygen octahedron distortion and a preparation method and application thereof. The chemical formula of the oxide is Nd < 0.2 > Pr < 0.2 > La < 0.2 > Ba < 0.2 > Sr < 0.2 > CoO < 3-delta >, wherein delta is the oxygen vacancy content. The oxide has lattice oxygen after being subjected to high entropy, so that oxygen ions move more easily, the oxygen evolution reaction activity is improved, meanwhile, the local environment of the oxygen ions is changed after high entropy, local oxygen octahedral distortion occurs, the oxygen ions are more active, the oxygen migration rate is further increased, the high oxygen evolution reaction activity is shown, and the oxygen evolution reaction activity is improved. Therefore, the yield of cathode carbon monoxide is improved.

The utility model relates to the technical field of transfer boxes, and discloses an aquatic product transfer box which comprises a transfer box body and a box cover installed on the outer wall of the top of the transfer box body, a gas collecting pipe is arranged on the inner wall of the bottom of the transfer box body, a plurality of gas guide pipes are arranged on the outer wall of the gas collecting pipe, and a plurality of nozzles are arranged on the outer walls of the tops of the gas guide pipes. A protective cover is fixedly connected to the outer wall of one side of the transfer box body, and an oxygen supply pump is fixedly installed on the inner wall of the protective cover. Through the arrangement of the protective cover, the air inlet net, the oxygen supply pump, the air collecting pipe, the air guide pipes and the spray heads, air with high oxygen content is pressurized and conveyed into the air collecting pipe through the oxygen supply pump, and then the air is dispersed into the air guide pipes through the air collecting pipe; and then the inside of the transfer box body is oxygenated through a plurality of nozzles on an air guide pipe, so that the inside of the transfer box body can be continuously oxygenated, the death rate of the aquatic fishes is reduced, and the survival rate of the aquatic fishes during transfer is effectively improved.

The invention provides a degradable contact lens and a preparation method thereof, and belongs to the technical field of contact lenses. The preparation method comprises the following steps: firstly, dissolving collagen in an acetic acid solution to obtain a collagen solution; dissolving hyaluronic acid in water to obtain a hyaluronic acid solution; the hyaluronic acid is formed by mixing first hyaluronic acid and second hyaluronic acid, the molecular weight of the first hyaluronic acid is 50-300 kDa, and the molecular weight of the second hyaluronic acid is 800-1500 kDa; and finally, mixing the collagen solution and the hyaluronic acid solution, and sequentially carrying out first crosslinking, second crosslinking and post-treatment to obtain the contact lens. The contact lens prepared by the invention has high oxygen permeability, proper mechanical properties and controllable degradability.

1. The name of the product of this design: Oxygen Enrichment Meter (Miaoyang Silver Edition). 2. Purpose of this design product: to output oxygen-enriched air with oxygen concentration higher than that of the ambient environment. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: Stereoscopic diagram 1.