54 results about "Microbial pollution" patented technology

The invention relates to the technical field of water quality monitoring, in particular to a water quality monitoring analysis method and system of a water conservancy system. The method comprises the following steps: acquiring area scale and water area type distribution, and carrying out sensing planning layout and water quality index real-time monitoring to obtain a water conservancy system water quality index data set; performing regional water quality index distribution coupling and regional time step division on the water conservancy system to obtain a corresponding water conservancy pH value, water conservancy dissolved oxygen concentration, water conservancy turbidity, water conservancy heavy metal concentration and water conservancy microorganism concentration; performing microorganism growth efficiency evaluation and microorganism pollution attenuation analysis on the water conservancy microorganism concentration to obtain a water conservancy area microorganism pollution degradation attenuation rate; and performing water quality pollution anomaly quantification and anomaly category decision management on the water quality index data set of the water conservancy system to generate a water quality anomaly category management strategy so as to execute corresponding regional water quality category management work of the water conservancy system. The accuracy and efficiency of water quality monitoring can be improved.

The invention relates to the technical field of agricultural data management, in particular to a grain data management method and system based on artificial intelligence, and the method comprises the following steps: based on a grain transportation container and a storage environment, extracting monitoring data of temperature and humidity monitoring equipment, a gas component detector and an illumination sensor, summarizing environment parameters, screening abnormal environment data, and storing the abnormal environment data; and obtaining an environment state record. According to the invention, through accurate analysis of temperature and humidity, gas components and illumination data, perception and alarm capabilities of sudden changes of a storage environment are enhanced, comprehensiveness of quality change monitoring is improved, mining capability of relevance of environmental factors and microbial pollution is enhanced, optimal storage conditions are matched, quality loss risks are reduced, pollution factors are accurately identified, and the method is suitable for popularization and application. Through combination of air quality data, pollution hidden danger screening and risk pre-judgment capabilities are improved, abnormal environment data are deeply analyzed, quality deterioration alarm is optimized, abnormal environment identification precision is improved, and a grain quality guarantee system is enhanced.

The invention relates to the technical field of equipment monitoring. The desert photovoltaic sand damage monitoring method, device and equipment based on the Internet of Things and the medium are provided, and the method comprises the following steps: performing dynamic detection processing on microbial pollution characteristics on the surface of a photovoltaic module to generate microbial pollution characteristic data; biofilm identification processing is carried out through an AI classification model, and pollution type labels and bioactivity grade data are generated; performing corrosion risk assessment processing according to the pollution type label and the biological activity grade data, and generating a corrosion risk index and a cleaning priority ranking result; performing directional cleaning and protection treatment on the surface of the photovoltaic module to generate a cleaning completion signal; cloud aggregation and trend prediction processing are carried out on the corrosion risk index and the cleaning effect data, and a corrosion trend report and maintenance suggestion are generated, so that the problems of detection dimension splitting, static evaluation and decision lag are solved, and the technical effects of improving the biofilm recognition precision, dynamically quantifying the microbial corrosion risk and adapting to desert unsteady state environment prediction are achieved.

The invention relates to a sterile filling system for beverage production and a filling process, and relates to the technical field of beverage production, the sterile filling system comprises a processing table, a sterile production mechanism, a transportation mechanism, a filling mechanism, a bottle dividing star wheel mechanism and an antifouling pad, and the sterile production mechanism comprises four L-shaped plates lapped at the top of the antifouling pad. By arranging the sterile production mechanism, the top plate can be fixed to the top of the machining table through an L-shaped plate and screws, a check curtain naturally falls to form a closed space, a filling area is isolated from the outside, and then an ultraviolet sterilization lamp on the top of the top plate continuously irradiates to sterilize air on the inner side of the check curtain, the equipment surface and a container to be filled; and meanwhile, the purposes of forming a continuous sterile filling environment and reducing the microbial pollution risk are achieved through the matching structure of the check curtain and the ultraviolet sterilization lamp, and the effects that the check curtain and the top plate are convenient to clean regularly and the long-term sterile state is maintained are achieved through the detachable design of the L-shaped plate.

The invention relates to the technical field of jasmine flower processing, and discloses a jasmine flower tea clean production process which comprises the following steps: S1, compound excitation pretreatment of jasmine flowers: performing ultrasonic treatment and ozone activation treatment on fresh jasmine flowers; s2, performing low-temperature dynamic multi-phase scenting: mixing the treated jasmine flowers with tea leaves, and performing multi-stage scenting by using a partitioned dynamic gas phase regulation and control system; s3, aroma trapping and re-injection: trapping non-adsorbed aroma components in the scenting tail gas through a molecular sieve adsorption and condensation recovery technology, and circularly injecting into the scenting chamber; s4, performing comprehensive drying on the tea leaves and the remaining flowers: performing a combined drying process of microwave drying, infrared drying and vacuum drying on the scented tea leaves; and carrying out water extraction and alcohol precipitation or fermentation conversion on the scented residual flowers. Through the synergistic effect of ultrasonic waves and ozone, the jasmine flower fragrance release efficiency is improved, microbial pollution is reduced, the adsorption efficiency of tea on aromatic molecules is improved, and fragrance waste is reduced.

The invention discloses a probiotic biofilm pulse ultrasonic atomization spraying device, and particularly relates to the technical field of jejunum nutrient canal processing.The device comprises a base, and a spraying sleeve shell and an electric frame are installed at the top of the base; an inner conversion frame is rotationally arranged in the spraying sleeve shell, a linear placement groove is formed in the outer side of the inner conversion frame, and multiple sets of vacuum fixing clamps are slidably connected to the inner walls of the two sides of the linear placement groove; a rotary drawing mechanism is arranged in the electrical frame and comprises a fixed feeding pipe, a drawing sleeve and an air supply shaft seat; the drawing sleeve penetrates through the middle of the air supply shaft seat and is in threaded connection with the air supply shaft seat, the air supply shaft seat is provided with a second cooling pipeline and an air outlet ring cavity from inside to outside, a first communicating hose is connected between the second cooling pipeline and the fixed feeding pipe, a vortex sheet is arranged in the air outlet ring cavity, and the air outlet ring cavity can be filled with inert gas; and piezoelectric ultrasonic atomization sheets are mounted in the end parts of the cooling pipeline II and the drawing sleeve. Environmental microbial pollution is effectively prevented, and the spraying effect of the probiotic biological membrane is guaranteed.

The utility model relates to the field of biological filter beds, in particular to a microorganism pollution and carbon reduction device based on an efficient composite biological filter bed, which comprises a tank body, a transmission case is fixedly connected to the top of the tank body, a spraying rod is movably connected to the top of the inner wall of the tank body, and a support frame is fixedly connected to the upper part of the inner wall of the tank body. The middle of the bottom of the supporting frame is movably connected with a placement frame, a microorganism filler box is inserted into the inner wall of the placement frame, the middle of the right side of the tank body is fixedly connected with an adjusting box, the right side of the adjusting box is fixedly connected with a control table, a rotation mechanism is arranged in the adjusting box, and a rotating mechanism is arranged in a transmission box. According to the utility model, the alternation of the microbial filler boxes and the uniform water spraying of the spraying rod are realized, and the high efficiency and the uniformity of the device are improved.

The multistage recovery treatment equipment comprises a treatment frame and further comprises a separation module, a mounting frame is fixedly mounted on the left side of the treatment frame, and a transmission shaft rotationally penetrates through the right side of the mounting frame; the separation module comprises a salvage plate, a solid plate, a separation plate, a separation spring, a solid frame, a convex block plate, a salvage hole, a waste liquid inlet pipe and a square hole, the salvage plate is fixedly mounted on the circumferential surface of the transmission shaft, the solid plate is fixedly mounted on the inner wall of the disposal frame, and the separation plate is slidably mounted on the inner wall of the disposal frame. The protruding block plates make contact with the inner walls of the separation holes and loosen the textile fabric retained on the inner walls of the separation holes due to extrusion force of the fishing plate, the fishing plate is made of an aluminum alloy material with the rough surface, the situation that the textile fabric is retained to breed microorganisms to pollute water can be avoided due to loosening of the textile fabric, and the reliability of wastewater separation treatment is ensured. The textile fabric loosening device has the advantage of being capable of loosening textile fabrics retained on the inner walls of the separation holes.

The present invention belongs to the technical fields of water softening and sterilization. Disclosed are an electrode capable of selectively adsorbing ions, and a micro-electric field adsorption system and the use thereof in water softening, sterilization and algae removal. The electrode capable of selectively adsorbing ions comprises polycarboxylic acid ion exchange fibers, activated carbon, a conductive agent and a binder, wherein the mass percent of the polycarboxylic acid ion exchange fibers is 5-20%. In the present invention, CCEF-modified activated carbon is used as a cathode; and in the case of the optimal doping amount of the cathode, the selectivity coefficients of Ca2+ and Mg2+ are 15.0 and 13.5, respectively, and the electro-adsorption capacity of Ca2+ is 311 μmol / g, which are far higher than those of an AC electrode. After a stability test in which 50 cycles are conducted, the electro-adsorption capacity of Ca2+ is maintained at 85% or higher, indicating that the electrode has a good regeneration capability. With nano-silver-modified activated carbon as an anode, under the reinforcement of an electric field, the killing rates with respect to bacteria and microalgae are up to 99% and 90% or higher, respectively, exhibiting good resistance to microbial pollution.

The invention relates to the technical field of water circulation, in particular to a rainwater collecting mechanism based on water circulation, which comprises a water storage tank and a liquid inlet hopper mounted at the top of the water storage tank, a liquid outlet is mounted at the bottom of the water storage tank, an adjusting assembly is longitudinally and slidably mounted in the water storage tank, and a filtering assembly is rotatably mounted in the water storage tank. The filtering assembly is located at the bottom of the adjusting assembly; after rainwater in a liquid inlet hopper is filtered by a filter screen, a guide groove rebounds to drive a guide ring and a top pore plate to move upwards, meanwhile, a second spring rebounds to drive a bottom pore plate to reset, the top pore plate is in a blocked state, after a guide block slides to the top of the guide groove, the filter screen is in a regular triangle shape, impurities filtered by the filter screen roll to a filter ring along the filter screen at the moment, and the impurities are filtered out. Impurities are prevented from being accumulated on the filter screen, and water-absorbing impurities are prevented from being retained on the filter screen, so that the filter screen is in a wet state, microorganisms such as bacteria and algae are easily bred, and rainwater passing through the filter screen is polluted.

The utility model discloses a small-dose cosmetic and skincare product packaging container, and relates to the technical field of cosmetic and skincare products. A fixing pipe is fixedly arranged at the top end of the tank body, an installation box is installed on the outer side of the fixing pipe, a connecting pipe is installed in the installation box, an auxiliary rod is fixed to the inner wall of the installation box, a sealing plate is movably arranged on the outer side of the auxiliary rod in a sleeved mode, the sealing plate is inserted into the connecting pipe in a penetrating mode, and a compression spring is movably arranged on the outer side of the auxiliary rod in a sleeved mode. Operating rods are movably arranged on the two sides of the sealing plate, adjusting grooves are formed in the two sides of the mounting box, and two limiting grooves are connected to the inner sides of the adjusting grooves. Through mutual cooperation of structures such as the mounting box, the connecting pipe, the auxiliary rod and the sealing plate, when the liquid pipe is taken out, the connecting pipe can be sealed, so that external air, humidity and microorganisms can be effectively prevented from entering, the stability of components is improved, the shelf life of products is prolonged, and the risks of oxidation, deterioration and microbial pollution are reduced.

The utility model relates to air purification technical field discloses a filter side replacement formula high -efficient air supply outlet, including the box, the box top fixedly connected with the apron, the both sides of box all are provided with the replacement door, the box bottom is provided with the fairlead, two support frames are fixedly connected in the box, and the filter screen is arranged between two support frames, the box inside is provided with cleaning assembly, and the both sides of box all are provided with two fixed components. In the utility model, when the air supply outlet runs, the filter screen dust and the fairlead dust fall cause the ventilation efficiency to drop, starts the air cylinder, drives the sliding block along the slide rail linear motion, drives the rotary rod and the horizontal sweep of cleaning brush, engages through the gear and the rack, converts linear motion into compound motion to complete the filter screen cleaning, realizes the dynamic stable maintenance of filter screen airflow resistance, the uniform guarantee of fairlead front end pressure and the effective reduction of microbial pollution risk.

The utility model provides an efficient and practical clean refrigeration house, which relates to the technical field of refrigeration houses, and comprises a refrigeration house body, a buffer box is arranged above the refrigeration house body, and a refrigeration inner fan and an air feeder are arranged in the buffer box; according to the utility model, the surface air cooler and the air filter unit which are originally positioned in the refrigeration house are moved to the buffer box, so that air is cooled in the buffer box through the refrigeration inner fan, then is diffused to the refrigeration house body through the efficient air supply port by the air feeder, and then returns to the buffer box through the air return port, the air return duct and the air return shutter; finally, the air enters a refrigerating inner fan through a primary filtering wall for refrigerating, continuous circulation and purification are completed, and therefore the problem that the temperature distribution of a conventional refrigeration house is not uniform is effectively solved, the temperature uniformity of the refrigeration house is improved, and the refrigeration house meets the standard requirement; meanwhile, through double filtration of the high-efficiency filter and the primary filter wall, the cleanliness of the refrigeration house is improved, and the risk of microbial pollution is reduced.

The invention relates to a combined sterilization technical method, which can perform technical adjustment in time according to factors such as on-site actual conditions, incoming water quality and seasonal variation, adopts an efficient combined sterilization technical method to improve the sterilization effect, and effectively solves the technical problem that a water treatment system is puzzled by microbial pollution and blockage. Meanwhile, the influence of biological drug resistance on the sterilization effect can be avoided and eliminated, and the service life of water treatment equipment is greatly prolonged.

The utility model provides a microorganism culture kit, which belongs to the technical field of biology and comprises a storage box, a connecting sleeve is fixedly connected to the outer surface of the storage box, a sealing cover is movably clamped in the connecting sleeve, a positioning groove is formed in the top end of the storage box, and a temperature control device is fixedly connected to the inner wall of the bottom of the storage box. A second clamping groove is formed in one side end of the sealing cover; the limiting mechanism comprises a connecting hole, a limiting rod, a shifting rod, a second spring, a clamping block and the like, and the limiting mechanism can be accurately matched with a clamping groove of the sealing cover. When the sealing cover is mounted, the clamping blocks firmly clamp the clamping grooves under the action of the springs and the driving levers, so that the displacement of the sealing cover caused by shaking during transportation and carrying is effectively avoided, the interior of the storage box is always kept in a sealed state, microorganisms are prevented from leaking, a stable and safe internal environment is created for microorganism culture, and the accuracy of experimental results is guaranteed; the experiment failure risk and the microbial pollution hazard are reduced.

The invention provides a training method and an identification method of a sequencing data pollution identification model, and electronic equipment. On the basis of obtaining the original sequencing data, performing quality filtering on the original sequencing data to obtain initial sequencing data; performing feature extraction on the initial sequencing data to obtain data pollution features; screening the initial sequencing data according to the data pollution characteristics to obtain sample sequencing data; determining pollution sequencing data of a target category according to the data pollution characteristics; combining the sample sequencing data and the target category pollution sequencing data based on a preset pollution ratio to obtain first training sequencing data; generating sequencing data joint features according to the first training sequencing data; training a supervised learning model according to the sequencing data joint features to obtain a target supervised learning model, and further obtaining a sequencing data pollution identification model; the problem that the pollution type of microbial pollution corresponding to the pollution data and the pollution proportion of the sequencing data cannot be determined is solved.

The invention relates to a composite adsorption material applied to CO2 gas-liquid separation and a preparation method of the composite adsorption material, and belongs to the technical field of chemical material preparation, a three-layer structure is constructed by taking oriented carbonized pine wood as a supporting framework, taking rare earth / nano-particle dual-modified zeolite as an adsorption core and taking a hydrophobic coating as a protective layer; the preparation method comprises the continuous processes of pine gradient carbonization, zeolite dual modification, in-situ coating forming and continuous sintering. The material solves the problems of capacity attenuation, high regeneration energy consumption and microbial pollution of a traditional adsorption material under a high-humidity working condition, is high in CO2 saturated adsorption capacity and high in capacity retention rate after regeneration, is adaptive to scenes such as a transcritical CO2 heat pump, high-humidity industrial waste gas purification and high-salinity wastewater treatment, can realize low-energy-consumption regeneration through photocatalysis, and is remarkable in effect.

The application relates to a purging device for a liquid preparation system and relates to the technical field of medicine liquid preparation. In order to solve the problem that a traditional purging device cannot completely purge, the purging device comprises a conveying pipeline, the inlet end of the conveying pipeline is provided with a compressed air supply source, the outlet end of the compressed air supply source is sequentially and serially provided with a pressure reducing valve and an electric heater along the conveying pipeline, a plurality of heating modules are arranged in the electric heater, the plurality of heating modules are vertically stacked along the height direction of the electric heater, a heating channel is formed in the electric heater from bottom to top, and a temperature gradient from low to high is formed when the compressed air flows through the heating channel. The application has the effects of effectively stripping the residual moisture on the surface of the system, improving the removal rate of the residual moisture and solving the microbial pollution risk caused by incomplete purging.

The utility model discloses a circuit board pattern electroplating device and electroplating equipment, the circuit board pattern electroplating device comprises an electroplating bath, a sterilization mechanism and a control mechanism, and the electroplating bath is used for accommodating electroplating liquid; the sterilization mechanism comprises a release assembly, a conveying assembly and a storage assembly, the release assembly is arranged in the electroplating bath or above the electroplating bath, and the storage assembly, the conveying assembly and the release assembly are sequentially connected; the control mechanism comprises a logic control assembly, and the logic control assembly is electrically connected with the conveying assembly so as to control the conveying assembly to convey the sterilization liquid stored in the storage assembly to the release assembly. The circuit board pattern electroplating device is applied to the electroplating equipment, the automation level of electroplating bath disinfection is improved, and microbial pollution to the electroplating bath is reduced.

Disclosed are a pemetrexed disodium liquid composition, a preparation method therefor and use thereof. The pemetrexed disodium liquid composition provided in the present invention comprises: an active pharmaceutical ingredient and a stabilizer. The active pharmaceutical ingredient is one or more of pemetrexed disodium, and a pharmaceutically acceptable complex, a salt, a solvate and a hydrate of pemetrexed disodium. The stabilizer is one or more of an organic solvent, a pH regulator and an antioxidant. The pemetrexed disodium liquid composition of the present invention has the advantages of simple preparation process, good physical and chemical stability, convenient clinical use, no need of redissolution, low microbial pollution risk in the preparation process, suitability for industrial production and the like.

The utility model discloses an online automatic cleaning device relates to automatic cleaning technical field, including cleaning subassembly and drying subassembly, the multiple spray cleaning ball of cleaning subassembly is along the distribution of air inlet and outlet pipeline, can be to the spray cleaning medium to the pipe inner wall all around, flush and then let in the compressed gas and take away residual medium, and drying subassembly communication pipeline, make the pipeline form "cleaning medium injection - residual water purging - drying " closed loop path, the utility model discloses through the distributed spray cleaning ball and lets cleaning medium multi -angle, multi -speed injection, cover more pipeline inner surface, solve the problem that traditional manual cleaning is not thorough and has the blind area, simultaneously, "cleaning - purging - drying " closed loop process, avoid residual water and cause microbial pollution, still promote cleaning efficiency, has overcome the disadvantage of low efficiency of manual cleaning.

The utility model relates to the technical field of preserved szechuan pickle pickling and processing equipment, and discloses a sealed cylinder for preserved szechuan pickle pickling and processing, which comprises a preserved szechuan pickle pickling and processing sealed cylinder, a cylinder cover is arranged above the preserved szechuan pickle pickling and processing sealed cylinder, and sealing assemblies are oppositely arranged on the outer surface of the preserved szechuan pickle pickling and processing sealed cylinder. An extraction assembly is arranged in the preserved szechuan pickle pickling sealing cylinder, the sealing assembly comprises connecting blocks which are relatively and fixedly connected to the outer surface of the preserved szechuan pickle pickling sealing cylinder, guide holes are symmetrically formed in the surfaces of the connecting blocks, and connecting holes are formed in the positions, located between the two guide holes, of the surfaces of the connecting blocks; connecting rods and guide rods are arranged in the connecting blocks, and the bottom surfaces of the connecting rods and the bottom surfaces of the guide rods are jointly connected with limiting plates. According to the utility model, through the arrangement of the sealing assembly, multiple sealing is realized, external air and impurities are effectively isolated, the environment stability in the preserved szechuan pickle pickling process is ensured, and oxidative deterioration or microbial pollution is avoided.

The invention discloses an alkali-heat synergistic rapid pickling method of preserved eggs, and belongs to the technical field of food processing. The method comprises the following steps: selecting fresh and undamaged eggs, cleaning and airing the eggs, putting the eggs into a sodium hydroxide solution with the concentration of 5-10%, and soaking the eggs at 20-30 DEG C for 16-48 hours; then the eggs are taken out and subjected to heat treatment, and the eggs are treated for 20-60 minutes at the temperature of 70-80 DEG C; then the eggs are put into cold water at 0-4 DEG C to be rapidly cooled; according to the method, alkali liquor treatment and heat treatment are combined, so that the pickling time of the preserved eggs can be shortened to 1-2 days, the prepared preserved eggs not only are uniform in egg white solidification and moderate in yolk soft yolk, but also have the advantages of being smooth in taste, unique in flavor, low in alkalinity, less in microbial pollution, long in shelf life and the like, a new technical path is provided for efficient production of the preserved eggs, and the method is suitable for industrial production. Good practical application values and market popularization prospects are realized.

The present application relates to heat exchange plate transport technical field, especially heat exchanger heat exchange plate transport frock and transport method.Its technical scheme includes: lower assembly, heat exchange plate body, heat exchange plate body is placed in lower assembly, lower assembly is staggered with the upper assembly matched with it on the upper assembly, to form a sealed cavity to isolate the heat exchange plate body, the lower assembly bottom is provided with a cavity and is communicated with the sealed cavity;Negative pressure positioning mechanism is used for positioning heat exchange plate and adaptive adjustment of force with the sealed cavity negative pressure condition.The present application avoids the bolt fixing, dismounting operation to the heat exchange plate in transportation, improves the transportation efficiency;In transportation, the acceleration and deceleration of the carrier are used to protect the heat exchange plate, the heat exchange plate is isolated by negative pressure, and microbial pollution is avoided;And under the negative pressure condition, the outside temperature and the internal heat exchange are reduced, so that the internal temperature and humidity are stable, which is beneficial to the safe transportation of the heat exchange plate.

This invention belongs to the field of biosensing and fiber optic detection technology, and discloses a photoelectric-coupled fiber optic real-time in-situ detection system for monitoring the adsorption process of *E. coli* (DH5α). Addressing the core pain points of existing *E. coli* detection technologies, such as reliance on complex sample pretreatment (taking over 24 hours) and the inadequacy of false positives and sensitivity with single-fiber SPR or electrochemical detection, which fail to capture the dynamic process of bacterial adsorption, this invention uses a fiber optic SPR probe with a dual recognition layer consisting of a surface-modified dopamine polymer membrane, an LPS-specific nucleic acid aptamer, and a *E. coli* shape-imprinted cavity as the working electrode. It simultaneously acquires SPR resonance wavelength shift and electrochemical current signals, achieving cross-validation of multi-dimensional detection results. The system can be in-situ implanted into complex detection systems such as water samples and food homogenates without labeling. It exhibits strong anti-interference capabilities and high detection specificity, and can track the entire dynamic process of *E. coli* adsorption-desorption in real time. It can be widely applied in scenarios such as rapid on-site screening of foodborne pathogens, research on bacterial interfacial adsorption mechanisms, and monitoring of microbial pollution in aquatic environments.

The invention discloses a medical sample analysis device, and belongs to the technical field of medical detection equipment, the medical sample analysis device comprises a workbench, the upper surface of the workbench is provided with an analysis box, the interior of the analysis box is fixedly connected with a second fixing block, and the inner top wall of the second fixing block is provided with a first motor. The electric lifting rod is driven by the first motor, and rotation action and adaptive height adjustment are synchronously completed; meanwhile, the electric sliding rail drives the sliding block to move, and then the discharging head below the supporting block is driven to be accurately aligned with the center of the tube opening of the centrifugal tube, so that the problem of liquid spilling and leakage caused by alignment deviation of the tube opening during manual liquid injection can be effectively avoided; and the metering pump controls the extraction amount of the diluent according to a preset proportion, so that the dosage of the diluent of each batch of samples can be ensured to be consistent, the diluent can be ensured not to be in contact with outside air in the whole process, and the air microbial pollution risk is remarkably reduced.

The application discloses a color protection composition and a processing method of raisins, and the composition of the color protection composition is composed of 2-3 parts of barium sulfate, 1-2 parts of sodium chloride, 3-5 parts of iron powder, 2-3 parts of calcium carbonate and 1-2 parts of titanium dioxide. The processing method comprises the steps of raw material preparation, color protection treatment, electron beam irradiation and natural cooling. The method cooperatively acts with the color protection composition with a specific proportion and the electron beam irradiation parameters, solves the problems of easy loss of color and microbial pollution of raisins in the existing process, takes the sample before irradiation as a benchmark, realizes color difference ΔE≤1.0 (basically no color change) through the combination of physical color protection and high-efficiency sterilization, and has stable product quality, a long preservation period and a high industrial application prospect.

According to the electrochemical hydrogen peroxide generator for the air conditioning system, a control assembly and an electrochemical reaction assembly are integrated in a shell, an anode electrode and a cathode electrode are connected with a positive electrode and a negative electrode of an external power source respectively to form a complete electrolysis loop, and a flow channel support is arranged between the anode electrode and the cathode electrode to form a flow channel; the flow path of electrolyte on the surface of an electrode is effectively optimized, the uniformity and turbulence degree of a flow field are enhanced, in-situ electrochemical generation of hydrogen peroxide is achieved, meanwhile, integration with the interior of an air conditioning system is achieved, and hydrogen peroxide is conveyed to key positions where bacteria are prone to breeding in the air conditioning system through air flow of an air conditioner. And'source control 'and'continuous protection' on microbial pollution are realized, so that the indoor air quality (IAQ) is effectively improved.

The invention provides a direct drinking water microorganism real-time monitoring and early warning system based on multi-source data fusion, and relates to the technical field of direct drinking water quality monitoring, and the system comprises the following modules: a data acquisition module, a multi-source sensor network installed in a direct drinking water pipeline according to the monitoring requirement of direct drinking water, a data transmission module, and a real-time monitoring and early warning module employing a LoRa / wiFi / 5G hybrid communication protocol, an appropriate communication mode is selected according to different scenes and requirements, and data acquired by the data acquisition module is transmitted to a cloud or an edge computing node through an MQTT protocol; the data processing and analysis module is used for carrying out preprocessing, multi-source data fusion and dynamic prediction and early warning on the data transmission module, and the user interaction and decision module is provided with a Web / APP visual interface; multi-source data such as microbial fluorescence spectrum, water quality parameters, pipe network topology and meteorology are integrated, microbial pollution of direct drinking water is monitored from multiple dimensions, and monitoring comprehensiveness and accuracy are improved.

The invention provides a preparation method of an antibacterial chemical additive in low-sugar food, and aims to solve the problems that a traditional antibacterial agent is easy to lose efficacy in the low-sugar food and the flavor is influenced. By innovatively constructing a'double-signal response mechanism ', natural polyphenol is bonded with an arylboronic acid ester bond to form a low-activity precursor, and a pH response type color development unit is introduced, so that color early warning at the initial stage of microbial pollution and precise bacteriostasis when the pollution is intensified are realized. According to the method, peroxides and acid metabolites generated by microbial metabolism are utilized to synergistically trigger release of the front antibacterial agent, and a novel low-sugar food preservative scheme which can achieve precise prevention and control and does not affect the flavor of the food is provided. The prepared antibacterial additive is high in stability in low-sugar food and remarkable in antibacterial effect.