175results about How to "Avoid death" patented technology

The utility model belongs to the technical field of plant cultivation, and particularly relates to an intelligent planting box for plant cultivation, which comprises a box body comprising a control area and a cultivation area provided with a temperature sensor; the air conditioner is arranged in the cultivation area and used for adjusting the temperature in the cultivation area; the circulating fan is arranged in the center of the inner wall of the top of the cultivation area and is used for uniformly distributing the temperature; the ventilation fan is arranged in the control area and used for replacing air in the cultivation area; the main control module is electrically connected with the air conditioner, the circulating fan, the temperature sensor and the ventilation fan; according to the intelligent plant cultivation planting box, the actual temperature in the cultivation area is detected through the temperature sensor, and the refrigerating or heating temperature of the air conditioner is controlled through the main control module according to temperature data, so that the actual temperature is consistent with the plant growth temperature; therefore, the situation that the refrigerating or heating temperature of an air conditioner is inconsistent with the actual plant growth temperature due to the fact that the temperature in the cultivation area drops or rises after ventilation of the ventilation fan is reduced.

The utility model provides a cottage bed with a cottage positioning structure, which comprises a cottage plate, a cottage bed and a recovery assembly, the recovery assembly is arranged on the lower side surface of the cottage bed, and the recovery assembly comprises a recovery box used for collecting irrigation water and a baffle used for changing the water flow direction. Compared with the prior art, the cutting device has the advantages that the cutting plates are arranged, the cutting holes are formed by the cutting plates, it is guaranteed that each cutting seedling is cut in the corresponding cutting hole, the cutting position is accurate, meanwhile, a user can adjust the number and the position of the cutting holes through the cutting plates of different numbers according to different requirements, and the cutting efficiency is improved. By arranging the recycling assembly, waste is reduced, irrigation water is recycled in a centralized mode, follow-up treatment is facilitated, meanwhile, the phenomenon that water accumulates at the bottoms of the cuttage holes is avoided, diseases are reduced, and the situation that roots of cuttage plants are soaked with excessive water, and consequently the plants die is prevented.

The invention relates to the technical field of aquaculture wastewater cyclic utilization, in particular to an aquaculture wastewater microalgae cyclic utilization system and a method thereof.The aquaculture wastewater microalgae cyclic utilization system comprises a raceway pond, a wastewater pretreatment mechanism and a power stirring mechanism, and a pipeline type photobioreactor is arranged on one side of the raceway pond; one side of the top end of the pipeline type photobioreactor is connected with a liquid storage tank, the bottom end of the liquid storage tank is connected with a second connecting pipe, the bottom end of the liquid storage tank is connected with a liquid discharging pipe, one end of the raceway pond is provided with a gas storage tank, one end of the gas storage tank is connected with a first connecting pipe, and the middle of the raceway pond is fixedly connected with a second partition plate. The system is high in applicability, high in stability and high in flexibility, the position is adjusted according to specific conditions, the microalgae culture cost of the system is low, the process is simple and convenient, the benefits of a user are improved, meanwhile, waste water generated by aquaculture can be recycled and turned into wealth, secondary pollution to the environment is avoided, and the environment can be protected.

The utility model discloses an insect receiving line for propagating lepidoptera larvae, which comprises an insect receiving part, the insect receiving part comprises a conveyor belt and an egg conveying part positioned above the conveyor belt, and the conveyor belt is used for conveying a tray bearing materials; the egg particle conveying part is arranged to synchronously convey egg particles to at least two trays which are sequentially arranged on the conveying belt in the upstream and downstream direction, the extending direction of the conveying belt is parallel to the width direction of the trays, and the width of the conveying belt is matched with the length of the trays; the PLC is electrically connected with a power source of the conveying belt and the egg particle conveying component. According to the system, the working efficiency is greatly improved, the structure is simplified, and the cost can be reduced.

The utility model relates to the technical field of side slope maintenance, and discloses a side slope protection device with water storage and irrigation functions, which comprises a side slope body, the top of the side slope body is fixedly connected with a water storage mechanism, and the left side of the side slope body is fixedly connected with an auxiliary mechanism; the water storage mechanism comprises a water storage tank, the water storage tank is fixedly connected to the top of the slope, and a first filter screen is arranged at the top of the water storage tank. According to the side slope protection device with the water storage and irrigation functions, by arranging the water storage mechanism, in the using process, rainfall at the top of the side slope body can be collected under the action of a water storage tank, so that the amount of rainfall flowing down the side slope is reduced, and water and soil loss is reduced; and under the action of a first water pump, hollow rods and water outlet holes, vegetation of the side slope body can be irrigated in the non-rainy season, so that death of the vegetation of the side slope body is reduced, the side slope body is protected, and in addition, the side slope body can be protected under the action of the hollow rods and the transverse rods.

The invention discloses a method for strengthening formation and denitrification performance of salt-tolerant aerobic granular sludge in high-salinity wastewater treatment, which comprises the following specific implementation processes: culturing S-AGS by taking activated sludge of a town sewage treatment system and salt-tolerant sludge of an industrial wastewater treatment system as a mixed inoculum, and optimizing the operating conditions of an SBR (sequencing batch reactor); 16SrRNA high-throughput sequencing and co-occurrence network analysis are applied to identify S-AGS core species, a theoretical basis is provided for directional strengthening of structural stability and denitrification performance of the S-AGS core species, screening and expanding culture are performed on core functional strains, Thaura T-1 and PseudofuvimonasP-1 obtained through screening and expanding culture are compounded to prepare a composite functional microbial inoculum, and on the basis of mixed inoculum and reactor conditions, the composite functional microbial inoculum can be used for preparing the high-efficiency denitrification agent for the S-AGS. The composite functional microbial agent is added, so that the synergistic strengthening effect on the denitrification performance of the S-AGS is achieved. According to the method, mixed sludge is inoculated, efficient nitrogen and carbon removal performance is achieved under high salt stress, a core strain is screened and subjected to expanding culture and compounded to serve as a composite functional bacterial agent, and the nitrogen removal efficiency of nitrification / denitrification in the biological treatment process under salt stress can be improved.

The utility model relates to the technical field of breeding greenhouses, and discloses a breeding greenhouse with an adjustable shading covering layer, which comprises a greenhouse main body, two symmetrical side support rods are arranged in the greenhouse main body, a plurality of rotating shafts are rotatably mounted between the side support rods, shading plates are fixed on the plurality of rotating shafts, and the shading plates are fixed on the greenhouse main body. Transmission gears are arranged at the two ends of each rotating shaft, through mutual cooperation of structures such as the servo motor, the transmission gears, the rotating shafts and the shading plates, one transmission gear can be driven by the servo motor to rotate, and the rotating shafts synchronously rotate through transmission of the transmission belt; according to the device, the rotating shafts are arranged on the rotating shafts, the shading plates mounted on the rotating shafts can swing by a certain angle through the rotating shafts, shading work can be performed when the shading plates make contact with one another, fries are prevented from being killed by strong light irradiation, and when the shading plates are perpendicular to the ground, the fries can receive light, so that the adjusting portability is greatly improved; and the labor intensity of planters is reduced.

The utility model discloses a water changing device for fish culture, which relates to the technical field of fish culture and comprises a circular culture pond, a pond base arranged at the bottom of the culture pond, a treatment tank concavely arranged in the middle of the bottom surface of the culture pond, a through hole formed in the side wall of the treatment tank, a water conveying pipe connected to the through hole, and a water pump connected to the other end of the water conveying pipe. A scraping rod used for scraping dirt attached to the pond wall is rotationally arranged in the culture pond, a blocking plate used for blocking the through opening is arranged in the treatment groove in a sliding mode, and a transmission mechanism used for controlling the blocking plate to slide is arranged in the pond base. According to the device, scraping operation can be carried out along the inner wall of the culture pond when water in the culture pond is changed by utilizing the scraping rod rotationally connected with the culture pond, so that scraped dirt and water to be changed are discharged together, and the sewage outlet is blocked by utilizing the blocking plate, so that fish death caused by the fact that external objects enter the culture pond is avoided.

The invention discloses application of 2-ME in preparation of a medicine for preventing or treating sepsis cardiomyopathy, low-dose 2-ME can recover the activity of myocardial cells damaged by sepsis, reduce the apoptosis rate of the myocardial cells and enhance the contractility of the myocardial cells, so that the heart function is improved; the 2-ME can significantly inhibit cell death, reduce accumulation of disulphide in cells and prevent occurrence of disulphide death, and has potential application prospects in myocardial protection and prevention and treatment of sepsis myocardial injury.

The utility model relates to the technical field of aquaculture, in particular to an aquaculture box with a cleaning function, which comprises a main body mechanism, a filtering mechanism and an oxygen generation mechanism, the filtering mechanism is positioned on the front side of the top end of the main body mechanism, the oxygen generation mechanism is positioned on the rear side of the top end of the main body mechanism, and the main body mechanism comprises a support plate. Supporting legs are fixedly installed at the bottom end of the supporting plate, sliding wheels are fixedly installed at the bottom ends of the supporting legs, an anti-expansion frame is fixedly installed at the top end of the supporting plate, a breeding box is movably installed in the anti-expansion frame, a drainage groove is formed in the inner bottom end of the breeding box, and a filter plate is fixedly installed on the drainage groove. The aquaculture box can move through the sliding wheels, so that cultured fishes can be transferred with water, the cultured fishes are prevented from death after being discharged from water, meanwhile, oxygen is sprayed out in a pressurized mode through the pressurizer so that the aquaculture water can reach an oxygen-enriched state, pollutants can be turned over through pressurized spraying, and the pollutants can be rapidly pumped out, filtered and cleaned in cooperation with suction of the pollutants.

The utility model relates to a buckwheat cultivation planter, and belongs to the technical field of buckwheat cultivation. The device comprises a frame; the multiple groups of cultivation mechanisms are arranged on the frame at intervals; and the reflecting plate is matched with the cultivation mechanism, is obliquely arranged on the frame towards the sun, and is positioned at the top of the cultivation mechanism. The cultivation box is controlled to ascend and descend through the lead screw to control the water absorption amount of the water storage cotton in the nutrition box, buckwheat seeds or seedlings are prevented from being soaked in water, roots of the seeds or the seedlings are prevented from being rotten, and meanwhile the seeds are prevented from being not germinated due to water shortage or the seedlings are prevented from being dead due to water shortage; the reflecting plate is arranged, the inclination angle of the reflecting plate can be adjusted, the buckwheat sprouts receive proper illumination, the water level is observed through the liquid adding box, and water is supplemented in time.

The utility model provides a disinfection management system for a large pig breeding hog house, which relates to the technical field of hog houses and comprises a hog house body, four supporting columns are fixedly mounted at the top of the hog house body, an operation frame is fixedly mounted at the tops of the four supporting columns, and two moving motors are fixedly inserted into the back surface of the operation frame. Two threaded rods are movably inserted into the inner surface wall of the operation frame, one ends of the outer walls of the two threaded rods are fixedly connected with the output ends of two moving motors correspondingly, the motors are started to enable the threaded rods to rotate, so that moving rods are driven to move, meanwhile, a water pump is used for pumping disinfectant contained in a storage box into a material pumping pipe, and the disinfectant in the storage box is pumped into the material pumping pipe. And finally, the disinfectant is sprayed into the hog house body in a water mist mode through a flow dividing pipe and an atomizing spray head, so that the problem that when each hog house body is disinfected manually, a large amount of manpower and time cost are needed is solved, and the cleaning efficiency of the hog house body is improved.

The utility model is suitable for the technical field of seedling raising devices, and provides a seedling raising device capable of automatically storing water. The four supporting columns are symmetrically fixed to the top of the water storage tank through bolts; the seedling raising box is fixed at the top ends of the four supporting columns; the protective cover is fixed at the central position of the bottom in the seedling raising box through a bolt; the through hole is formed in the top of the protective cover; the motor is fixed on the outer side wall of the seedling raising box through a bolt; the ball screw is fixed at the output end of the motor; the nut seat is arranged on the outer side wall of the ball screw; the micro electric push rod is fixed at the top of the nut seat through a nut; through lifting of the soil humidity sensor after horizontal movement in the seedling raising box, multi-point humidity detection of soil in the seedling raising box can be achieved, so that the real humidity state of the soil is obtained, the precision of a soil humidity detection result is guaranteed, and the problem that the subsequent irrigation amount is affected due to the fact that the humidity of the soil in the seedling raising box is not uniform is solved.

The invention discloses a construction method of a conditional knock-down dynactin animal model of astrocytes and an application of the animal model of the conditional knock-down dynactin animal model of the astrocytes. According to the method, a Dctn1LoxP gene knock-in mouse is hybridized with an Aldh1l1-Cre / ERT2 transgenic mouse, a target genotype mouse is obtained through three rounds of breeding, 100mg / kg Tamoxifen is continuously injected into the intraperitoneal cavity of the 2-month-old mouse for 5 days, and specific knock-down of dynactin in brain and spinal astrocytes is realized, including knockout of p150Glue and reduction of DCTN4, p50 and Arp1alpha protein levels. The model has the advantages of being high in specificity, permanent in intervention aging and capable of covering multiple life stages, the defects of a traditional model are overcome, the model can be used for researching the influence of dynactin on astrocyte neurobiological functions, a reliable tool is provided for screening related targets of nervous system diseases, and the model has important application value.

The present invention relates to an evaluation device 4 for evaluating the severity of pneumonia in a target patient, comprising: an acquisition unit 42 for acquiring a respiratory waveform of the target patient; a calculation unit 43 for calculating a value of an index indicating instability of a respiratory cycle or a respiratory frequency from the respiratory waveform; and an evaluation unit 44 for evaluating the severity based on the calculated value.

The invention discloses a biochemical constant-temperature incubator with a sterilization function, and relates to the field of constant-temperature culture.The biochemical constant-temperature incubator comprises an incubator shell, supporting legs are symmetrically arranged at the bottom of the incubator shell, a sealing door is rotatably connected to the front face of the incubator shell, an air inlet mechanism is fixedly connected to the bottom of the outer surface of the incubator shell, and an air outlet mechanism is fixedly connected to the top of the outer surface of the incubator shell; a heat preservation layer is fixedly connected to the inner wall of the box shell, a heating mechanism is fixedly connected to the bottom of the heat preservation layer, an adjusting mechanism is fixedly connected to the top of the heating mechanism, cultured microorganisms are placed on the adjusting mechanism, and the adjusting mechanism can control and protect the cultured microorganisms; then the air inlet mechanism evolves and sucks outside air, the outside air is heated through the heating mechanism and flows out of the device from the air outlet mechanism, and then constant temperature in the incubator is achieved.

The utility model relates to the technical field related to park management, in particular to an intelligent park operation management device which comprises a base, a water pumping structure fixedly installed on the base and a rotating assembly installed on the base. The reciprocating spraying structure is connected with the rotating assembly and communicates with the inner side of the rotating assembly; the detection unit sends a signal to the power supply control piece of the water pumping structure by sensing the moisture content in the outside air, the water pumping structure is driven to execute water pumping and water conveying work, when water in the water pumping structure rushes to the rotating assembly, the water in the water pumping structure is driven to rotate under the impact of water flow, and the rotating assembly is driven to rotate. The rotating assembly rotates relative to the base, water is conveyed into the reciprocating spraying structure through the rotating assembly, the reciprocating spraying structure is driven to rotate when the rotating assembly rotates, the reciprocating spraying structure moves up and down in a reciprocating mode in the rotating process, and ground cover shrubs in the surrounding area with the base as the center can be evenly irrigated.

The invention relates to a single-head breeding method of oryza vitessoides. The method comprises the following steps: (1) collecting and disinfecting eggs; (2) hatching eggs; (3) larva feeding: after larva incubation, each larva is independently transferred into a larva feeding cup, and a filter paper block dripped with sterile water is placed in the larva feeding cup; the method comprises the following steps: taking fresh picked artocarpus plant tender leaves as foodstuff, and feeding the larvae until the larvae are mature and enter a pupal stage; (4) feeding mature larvae: when the larvae are about to pupa, putting foodstuff and filter paper as media for self-made pupa chambers, dropwise adding sterile water into the filter paper for moisturizing, and after the mature larvae are completely pupated, removing the foodstuff; (5) treating pupae; (6) adult feeding and egg laying: after eclosion of the adults, pairing and transferring the adults into an adult feeding and egg laying cup, and returning to the step (1). By adopting the breeding method disclosed by the invention, the heortia vitessoides population which is normal in growth and development and relatively high in survival rate, pupation rate and eclosion rate can be obtained.

The invention discloses a cell culture medium additive as well as a preparation method and application thereof. The cell culture medium additive comprises the following components: beta-sitosterol, sericin, hydrolyzed corn starch, vitamins and a liquorice extract. Cortical neurons cultured by the cell culture medium additive provided by the invention are high in survival rate and good in growth state, and the purity reaches 90% or above; all the components in the cell culture medium additive provided by the invention have a synergistic effect, so that the cell culture medium additive plays a role in promoting the survival, growth and development of neurons and can prevent the neurons from being damaged to die; meanwhile, the antibacterial effect can be achieved without adding antibiotics, and adverse effects of the antibiotics on growth and differentiation of nerve cells are avoided; when the cell culture fluid provided by the invention is used for culturing cells, the experimental operation can be simplified, the cost can be reduced, and the stability and repeatability of experimental results can be improved.

The invention relates to the technical field of plant germplasm resource identification, and discloses a method for identifying cold resistance of coffee. The identification method comprises the following steps: performing comprehensive cold resistance evaluation on the conductivity, catalase content, soluble sugar content and soluble protein content of obtained leaves by adopting coffee leaves subjected to low-temperature treatment through a membership function method to obtain cold resistance membership function values Uij of different coffee germplasm resources; and judging the cold resistance of the coffee resource through the obtained cold-resistant membership function value Uij. According to the method, a multi-index comprehensive evaluation system is established according to a membership function method, and the cold resistance of coffee can be effectively identified in the early stage. The identification method is suitable for a technical system for identifying and evaluating the early cold resistance of different coffee resources in the field in the natural cooling process, is matched with the winter field cold resistance identification result of a coffee planting area, and has important significance on utilization of different germplasm resources of coffee, reasonable planning and layout of a planting site and cold resistance breeding.

The invention discloses an encrypted traffic classification method based on feature fusion and a packet dilated convolutional network, which identifies network traffic with high precision and ensures privacy and computational efficiency at the same time, and comprises the following steps: data preprocessing: only retaining 26 bytes to protect privacy through segmentation, filtering and truncation; feature extraction: adopting a double-sliding window mechanism and a designed hash function, generating concrete and abstract features in cooperation with an embedded layer, and realizing joint feature representation; in the model design, firstly, lightweight convolutional network design is carried out, a receptive field is expanded through a lightweight grouping dilated convolutional structure, and channel mixing and point-by-point convolution are added to increase interchannel communication; and in a classification output stage, a cosine annealing mechanism is used to dynamically adjust a learning rate so as to improve a training effect and a convergence speed. The method is superior to an existing lightweight method in the aspects of accuracy, stability, processing speed and resource occupation, is suitable for efficient traffic classification application of resource-constrained equipment, and has practical and promotional values.

The invention discloses a sewage treatment agent as well as a preparation method and application thereof. The sewage treatment agent comprises a microbial agent, modified diatomite, silicic acid, sodium alginate and modified soluble starch. The preparation process of the sewage treatment agent comprises the following steps: adding a microbial agent into a modified diatomite aqueous solution, uniformly stirring to uniformly load the microbial agent inside and on the surface of the modified diatomite, and drying until the moisture content is less than or equal to 4% to obtain a material I; and adding the first material, silicic acid and modified soluble starch into a reactor with stirring magneton and a sodium alginate aqueous solution for reaction to obtain the sewage treatment agent. According to the invention, microorganisms are adopted to degrade ammonia nitrogen compounds in sewage, meanwhile, suspended substances in water can be subjected to flocculating settling, the microorganisms are reasonably proportioned to realize maximum flocculating settling and degradation of the ammonia nitrogen compounds, and the microorganisms are mutually matched and coordinated and symbiotic, so that dominant bacterial communities can be formed when the microorganisms are put into the sewage; the ammonia nitrogen index in the sewage is rapidly reduced, and the effect is rapid and remarkable.

The utility model discloses an ecological restoration device for sand vegetation. The ecological restoration device comprises a frame; the supporting rods are arranged on the frame in a circumferential array and are in running fit with the frame; ground nails are fixed to the bottom end of the frame in a circumferential array mode, and drainage holes are formed in the bottom ends of the ground nails; the flow guide pipes are circumferentially arrayed on the side wall of the frame and are communicated with the drainage holes; and the water collecting assembly at least comprises conical blocks which are circumferentially arrayed on the side wall of the frame. According to the sand vegetation ecological restoration device, through the arrangement of the frame, the supporting rods, the ground nails, the drainage holes, the flow guide pipes and the conical blocks, water vapor in air can be condensed into water drops by means of the characteristic that the temperature difference between day and night in desert is large after saplings are fixed in sandy soil, and the water drops are collected and supplied to the roots of the saplings, so that the saplings are protected from being damaged. The saplings can absorb more water sources, large-area death of the saplings which are just planted due to water shortage is avoided, the survival rate of the saplings in the desert is increased, and the restoration speed of an ecological system is higher.

The invention relates to an oxygenable ecological medium box for improving river water quality, comprising a box body, a floating component fixed at an opening on the top of the box body and capable of adjusting a fixed height up and down, a bottom layer medium arranged on the bottom surface of the box body for simulating a riverbed environment, a plurality of freshwater clams cultured in the bottom layer medium, a middle layer medium laid on the surface of the bottom layer medium for simulating a particle environment of freshwater clams filtering food, and a surface layer medium arranged on the top of the middle layer medium, the water-facing surface, the water-receiving surface and the bottom surface of the box body are all provided with water holes, the floating component comprises a U-shaped floating box, a floating frame fixed on the inner side of the U-shaped floating box, a partition vertically fixed inside the U-shaped floating box and located above the water-facing surface of the box body, and a non-powered oxygenation mechanism arranged inside the U-shaped floating box; the invention can significantly prolong the survival time of freshwater clams, and can also effectively improve the environment and conditions required for the survival of freshwater clams to greatly reduce the mortality rate of freshwater clams.

This invention relates to animal models and their applications, specifically to a method for constructing a spontaneous mouse cerebral edema model and its application. This invention utilizes PEN2... fl / + Mice and PEN2 fl / + Mice were mated to obtain PEN2. fl / fl Homozygous mice; then the obtained PEN2 fl / fl Mice and hGFAP Cre / + Mice were mated to obtain PEN2. fl / + hGFAP Cre / + Mice; the final PEN2 obtained fl / + hGFAP Cre / + Mice and PEN2 fl / fl Mice were mated to obtain PEN2. fl / fl hGFAP Cre / + The mouse model is a spontaneous mouse cerebral edema model. In this model, PEN2 protein levels are significantly downregulated, and the mouse exhibits a severe cerebral edema phenotype. This model can be used to establish a cerebral edema drug screening platform. It can also be used for research on cerebral edema-related diseases, such as the pathogenesis of cerebral edema caused by infection, glioma, and traumatic brain injury, as well as for the development of technologies and products for the diagnosis and treatment of related diseases.

The application discloses a water-saving irrigation device capable of coping with crops with different densities and a method thereof, and belongs to the technical field of irrigation devices. The water-saving irrigation device comprises a U-shaped pipe, the upper end of the U-shaped pipe is provided with a continuous water supply assembly for ensuring continuous water supply to plants, the continuous water supply assembly comprises a water spraying irrigation device and a sealing blockage alarm device, the U-shaped pipe is connected with the water spraying irrigation device, and the water spraying irrigation irrigation device is connected with the sealing blockage alarm device. An irrigation adjusting device for adjusting plant irrigation is arranged on the U-shaped pipe. A fertilizer stirring and conveying device for providing the device with fertilizer is arranged on the irrigation adjusting device. A feeding device for conveying fertilizer into the device is arranged on the fertilizer stirring and conveying device. In the above manner, when the device is blocked, the standby device is started to supply water to the plants, so that the death of the plants caused by uneven irrigation is avoided, and when the standby device is started, an alarm is sent in a timely manner to remind the staff to replace the device.

The utility model relates to the technical field of medicinal material planting, in particular to a planting shed, two seedbed frames are detachably arranged in the planting shed, two fixing holes are formed in the two sides of the planting shed respectively, two mounting columns are arranged in the planting shed, and the two ends of the mounting columns are fixed to the interiors of the fixing holes respectively; a driving motor is fixed to one side of the planting shed, and an output shaft of the driving motor penetrates through one side of the planting shed; a lead screw is fixed to an output shaft of the driving motor, a storage box is fixed to the top face of the mounting plate, a water mist spray head is fixed to the bottom face of the mounting plate, and two connecting hoses are fixedly communicated with the two sides of the storage box correspondingly. Death of traditional Chinese medicinal material seedlings caused by excessive fertilizer at one position due to accumulation during spraying is avoided, so that the traditional Chinese medicinal material seedlings can grow healthily and strongly, the yield of traditional Chinese medicinal materials is increased, and the income can be increased.

The invention belongs to a fruit tree cultivation technology, in particular to a fruit tree pruning method based on branch-leaf-root synchronous growth, which is suitable for a fruit tree with at least three main branches. Different from a traditional strong-removing and strong-remaining method, the method adopts a weak-removing and strong-remaining strategy, and synchronous growth of branches, leaves and roots is realized through the following steps: firstly, performing head removing treatment on a main branch I, reserving 75-85% of length, selectively reserving vigorous branches of more than 1m, and forming inverted branches; in the second year, girdling the inverted branches to promote flower bud formation; after the fruits are harvested in the third year, the fruiting branches are cut off, and the second main branch is subjected to the same treatment; in the fourth year, the first main branches grow new branches again, and the process is repeated. According to the method, the main branches are trimmed and updated in turn, so that continuous growth and fruiting of the trees are kept, the yield and the fruit quality are improved, meanwhile, the influence on the environment is reduced, and the method has important economic and ecological values.

This utility model relates to the field of rat smoking technology and discloses a rat smoking device, including a smoking chamber, a three-way valve, a smoking chamber, and an extraction and delivery component. The three ends of the three-way valve are detachably connected to a first hose, a second hose, and a third hose, respectively. The first hose is detachably connected to the smoking chamber. The smoking chamber is detachably connected to the third hose, and the smoking chamber can be used for burning cigarettes. The extraction and delivery component is detachably connected to the second hose and is used to draw the smoke from the burning cigarette in the smoking chamber through the third hose, the three-way valve, and the second hose. This utility model proposes a rat smoking device that generates smoke through the smoking chamber, which is then delivered to the smoking chamber via hoses and a three-way valve to smoke the rats, simulating the smoking process and avoiding experimental errors. Simultaneously, fresh air is introduced and smoke is expelled, simulating a natural smoking environment, diluting the smoke concentration, ensuring the survival safety of the rats, extending the smoking time, and obtaining more data on the chronic development of COPD.

The utility model provides an automatic temperature control ventilator for a planting greenhouse, and relates to the technical field of greenhouse temperature control ventilation, the automatic temperature control ventilator comprises a greenhouse body, ventilation holes are arranged on two side walls of the greenhouse body and close to the center, and a connecting cavity is arranged inside the inner wall of the top of the greenhouse body and close to the center. And a cylinder is fixed and communicated to the top of the shed body and located at the connecting cavity, a fixing part is fixed in the cylinder, and a driving motor is embedded and fixed in the fixing part. When ventilation is needed, the cover plate is opened, the electric push rod pushes the top cover to rise, the driving motor drives the fan blades to rotate to drive external airflow to enter the connecting cavity, and the two ends of the connecting cavity are communicated with the arc cavity, so that the airflow can be injected into the arc cavity; at the moment, the air flow passes through the heating pipes and is discharged into the greenhouse body from the air outlet holes, the effect of preventing sudden temperature drop in the greenhouse body caused by ventilation can be achieved, and the effect of preventing planted crops from dying due to low temperature can be achieved.