45 results about "Diseases transmission" patented technology

The invention discloses a grape disease recognition and early warning method based on the Internet of Things, and relates to the technical field of plant disease recognition, image acquisition equipment and environment sensing nodes are arranged in a vineyard, and leaf images and corresponding temperature and humidity, illumination and soil moisture parameters are obtained; inputting the image into a neural network fusing dilated convolution and a residual attention mechanism, realizing extraction of a disease spot region and a disease spot variation feature, and generating a preliminary recognition result; constructing a multi-factor evolution sample set in combination with the recognition result and the environment state of the time node; constructing a space-time correlation graph model based on a graph neural network, estimating a disease propagation risk path and a diffusion probability, and performing early warning judgment at a gateway end through a multi-factor gating discrimination algorithm; the method disclosed by the invention is high in recognition precision and strong in response timeliness, has adaptive prediction and targeted treatment capabilities, and remarkably improves the intelligence and precision level of grape disease management.

The invention relates to the field of preparation of materials for articular cartilage repair, in particular to collagen and chitosan cross-linked temperature-sensitive gel for articular cartilage repair and a preparation method of the collagen and chitosan cross-linked temperature-sensitive gel. The cartilage repair material prepared by the invention adopts the recombinant human collagen with a triple helix structure as a main raw material. The raw material is prepared by using a mammalian cell expression system, is close to protein folding and polymerization of natural protein, and has a spatial structure and modification necessary for active protein. The recombinant human collagen with the triple-helix structure is good in biocompatibility and free of rejection reaction and anaphylactic reaction, and the risk of disease transmission possibly caused by animal-derived collagen can be avoided. The injection type temperature-sensitive gel is liquid at low temperature and is converted into hydrogel at 37 DEG C, so that the injection type temperature-sensitive gel is suitable for being used as a transfer carrier for in-vivo injection treatment, secondary injury of an organism is effectively avoided, and the injection type temperature-sensitive gel has a wide clinical application prospect.

A transparent intubation barrier in the form of a box is provided which substantially reduces aerosol exposure and the transmission of disease between patient and healthcare provider.

The invention relates to the technical field of data processing, and provides a space-time risk assessment method for a disease transmission area. The method comprises the following steps: calculating the total travel activity time of a travel track according to the travel track and a vehicle and a moving speed corresponding to the travel track, and obtaining a plurality of reachable areas corresponding to the travel track; determining a plurality of candidate activity areas from all the reachable areas according to the total travel activity time, and obtaining a plurality of disease transmission areas based on all the candidate activity areas and all the travel tracks; generating a space-time co-occurrence relationship between every two disease infected objects based on all the disease transmission areas; according to all the time-space co-occurrence relations, the infection probability of each disease infection object is calculated, and according to all the infection probabilities and all the disease transmission areas, the disaster-causing danger of each disease transmission area is calculated; and calculating the propagation risk according to the disaster-causing risk of the disease propagation area. According to the method, the accuracy of disease transmission risk assessment of the region can be improved.

The present application relates to the technical field of livestock trough, and discloses a multifunctional trough for livestock breeding and a use method thereof, which comprises a base and a side fence fixed on the edge of the base, a support and a platform are fixed on the top of the base, a trough is installed on the inner side of the support, a fence door corresponding to the position of the platform is installed on the side fence, and a plurality of feeding ports are arranged on the side fence. The mixer and the main driving assembly are installed beside the trough, so that the feed can be automatically configured and uniformly fed into the trough, which is beneficial to realize automatic feeding and reduce the workload of the breeder. In addition, during the feeding process, the main driving assembly and the auxiliary driving assembly cooperate to insert the partition plate into the trough, so as to isolate the sick livestock, and then the special feed is fed to the sick livestock through the mixer, which is beneficial to separately feed and treat the sick livestock, improves the treatment efficiency, and reduces the probability of disease transmission.

The invention relates to the technical field of aquaculture disease prevention and control and molecular biology, in particular to an RNA interference agent for killing ichthyophthirius multifilis, a preparation method, a composition and application. The interference agent is dsRNA / siRNA / shRNA or an expression vector of the dsRNA / siRNA / shRNA of targeted EF1-alpha, HSP90, ICP1 and ICP2; t7 tailed primer amplification, in-vitro transcription and annealing are adopted to prepare dsRNA, the dsRNA can be further prepared into a water body treatment composition with liposomes / chitosan and other carriers, and soaking treatment (20-28 DEG C, 1-48 h) is carried out in a grazing body stage. Under the conditions of 1 mu g / mL, 25 DEG C and 24 hours, the expression of the target gene is obviously reduced (2-delta delta Ct is less than or equal to 0.55), and the corrected death rates of 40.16% (EF1-alpha), 45.51% (HSP90), 21.39% (ICP < 1 >) and 19.39% (ICP < 2 >) are obtained. The scheme is green, has low residue, can be engineered, and is suitable for preposed blocking of the white-spot disease transmission chain in aquaculture.

The present invention relates to an isolated mosquito extracellular vesicle for use as an immunogenic agent in the prevention of at least one vector-borne disease. The present invention also relates to a vaccine composition comprising at least one mosquito extracellular vesicle. The present invention further relates to the use of a mosquito extracellular vesicle in identifying at least one immunogenic peptide capable of reducing, in a vertebrate, the transmission of a vector-borne disease when the vertebrate is bitten by the vector, and to a method for identifying at least one immunogenic peptide capable of blocking, in a vertebrate, the transmission of a vector-borne disease when the vertebrate is bitten by the vector, the method comprising a step of identifying in vitro at least one target antibody present in an animal serum sample immunised against mosquito extracellular vesicles.

The utility model relates to the technical field of food packaging, in particular to intelligent fast food packaging equipment which mainly solves the technical problems that time and labor are wasted, quantitative packaging is difficult to achieve and diseases are likely to be caused in existing manual fast food packaging. The intelligent fast food packaging equipment comprises a rack, a feeding mechanism, a bag storage mechanism, a bag taking mechanism, a bag opening mechanism, a bag clamping mechanism and a packaging mechanism, the feeding mechanism comprises a storage hopper, a metering screw and a filling hopper, the packaging mechanism comprises a vacuumizing assembly and a heat sealing assembly, automatic quantitative feeding of materials can be achieved through the feeding mechanism, and the packaging efficiency is improved. Automatic feeding of packaging bags can be achieved through the bag storage mechanism, the bag taking mechanism, the bag opening mechanism and the bag clamping mechanism, vacuumizing and heat sealing of the packaging bags filled with materials can be achieved through the packaging mechanism, and therefore mechanical packaging of the fast food packaging bags is achieved. The equipment can replace manual operation, manpower is saved, efficiency is improved, and meanwhile the disease transmission risk caused by manual operation can be reduced.

The invention provides a disease transmission prediction model construction method based on a comprehensive space-time distance between cities, and the method comprises the steps: matching a station with each city in a plurality of cities on a city scale according to the name of the station in train operation timetable data; according to train number names of the trains, performing type division on the trains; according to the train operation relation and the train type between the cities, the train number of the nonstop trains between the cities is calculated; according to the train operation relation between the cities, the train operation duration between the cities is calculated; calculating a comprehensive space-time distance between the cities according to the train number and the train operation duration of the nonstop trains between the cities; and fitting a disease transmission speed prediction model by taking the comprehensive space-time distance and the direct distance between the cities as independent variables and the disease transmission data between the cities as dependent variables. According to the embodiment of the invention, the disease transmission rule can be accurately predicted from time and space dimensions at the same time.

The invention relates to the technical field of aquaculture, and provides a separated stichopus japonicus culture net cage device which comprises an outer frame, two sliding grooves are formed in the inner wall of the outer frame, a plurality of supporting frames are slidably connected to the interiors of the two sliding grooves, two clamping grooves are formed in one sides of the multiple supporting frames, and the two clamping grooves are connected with the two sliding grooves. Two clamping plates are fixedly installed on the other sides of the multiple supporting frames, the two clamping plates are movably embedded in two clamping grooves, a rotating rod is rotatably installed on one side of the outer frame, the outer surface of the rotating rod is movably sleeved with a blocking strip, a first threaded rod is rotatably connected to one side of the outer frame, and a second threaded rod is rotatably connected to the other side of the outer frame. In the embodiment of the invention, the net cage bodies are located in the multiple vertical grooves, the whole outer frame is placed in water, the stichopus japonicus is located in the net cage bodies for culture, and the multiple net cage bodies are distributed, so that the stichopus japonicus can be separated, and the situation that too much stichopus japonicus is accumulated in one net cage body is avoided; or the risk of disease transmission is caused.

The utility model relates to the technical field of medical instruments, and discloses a multi-closed sputum collecting bag which comprises a spitting bag body (1) with an opening, a bag opening (3) is arranged at the opening, two closed elastic pieces (2) with two ends opened by pressing are fixedly arranged in the spitting bag body (1) at a certain distance away from the bag opening (3), and after pressing force is removed, the elastic pieces (2) can be separated from the bag opening (3). When the elastic piece (2) is closed again, the bag opening (3) can be turned outwards, the elastic piece (2) is exposed to collect sputum, a bag opening sealing strip (31) is arranged at an opening of the bag opening (3), an in-bag sealing strip (4) is arranged at the position, away from the elastic piece (2) by a certain distance, in the spitting bag body (1), the in-bag space of the spitting bag body (1) is divided into two independent spaces, and a disinfection piece (5) is arranged at the bag bottom of the spitting bag body (1). And a disinfection sheet sealing strip (8) and a water injection port (6) are arranged in the space for multiple sealing, so that the use of a patient is facilitated, and disease transmission is prevented.

This utility model belongs to the field of yak disease prevention technology, specifically a yak disease prevention passageway. Addressing the problems of existing yak disease prevention passageways causing congestion and slow isolation during the transfer of suspected sick yaks, as well as limited spray range, incomplete disinfection, and increased risk of disease transmission, this invention proposes the following solution: It includes a main containment area and at least two sub-containment areas. A trapezoidal inspection passageway, wider at the top and narrower at the bottom, is provided between the main and sub-containment areas. Both ends of the inspection passageway connect to a self-propelled passageway. In this utility model, a reasonable passageway is constructed using trapezoidal frames to ensure orderly passage of yaks. Simultaneously, the drive component, in conjunction with the guardrail, allows for the rapid and safe transfer of sick yaks to the isolation area. A cylinder-driven fixing frame stabilizes and restrains the yaks, while the spray nozzles of disinfection pipes I and II achieve comprehensive disinfection. The coordinated operation of all components ensures efficient and continuous disease prevention, weighing, and isolation, reducing manpower and lowering the risk of disease transmission.

The utility model relates to the technical field of hospital house ventilation, and provides a ventilation device for hospital infection prevention and control and an outpatient building. The air supplementing mechanism is mounted on the main body and used for increasing the air velocity between the air inlet and the air outlet; the air dispersing mechanism is mounted on the main body and is used for dispersing air generated by the air supplementing mechanism; the monitoring mechanism is used for monitoring the air velocity between the air inlet and the air outlet; when the air velocity at the air inlet and / or the air outlet is reduced, the monitoring mechanism controls the air supplementing mechanism to work; when the air flow speed at the air inlet and / or the air outlet is normal, the monitoring mechanism enables the air supplementing mechanism to stop working; the monitoring mechanism is used for monitoring the air flow speed between the air inlet and / or the air outlet, then the air supplementing mechanism is controlled to work according to the flow speed, finally the air is dispersed through the air dispersing mechanism, and then disease transmission is prevented.

The utility model discloses a fetal heart monitoring probe with a protective structure, which relates to the technical field of medical auxiliary instruments and comprises a fetal heart monitoring probe body, and the lower portion of the fetal heart monitoring probe body is connected with a convenient protective device in a sleeved mode. According to the fetal heart rate monitoring probe, the disposable protective clamping structure is sleeved with the limiting structure to protect the detection end of the fetal heart rate monitoring probe body, presetting and rapid installation of a coupling agent are achieved, medical workers do not need to smear the coupling agent manually, the operation process is greatly simplified, and the working efficiency is improved; the fetal heart monitoring probe body does not make direct contact with the skin of a pregnant woman and is isolated through the latex film layer, the risk of cross infection is effectively reduced, the latex film layer is disposable, the possibility of disease transmission is reduced, the disposable protective clamping structure is rapidly detached and replaced, the tedious disinfection step is avoided, and the working efficiency is improved. In addition, potential corrosion to the fetal heart monitoring probe in the disinfection process is reduced, and the service life of equipment is prolonged.

A bunkhouse trailer is provided that includes a plurality of bunk bed assemblies. The trailer has a plurality of modular removable interior barrier walls defining isolated living spaces between the lower and upper beds in each of the bunk bed assemblies. The individual accommodations for each user eliminates shared spaces where surface contamination may lead to disease transmission. In some embodiments, the modular removable interior barrier walls can be configured to form a bunk room having between one and four individual bunks.

A signal is received from an occupancy sensor each time a person passes through an access point corresponding to a building space, and is identified as indicating a person either entering or exiting the building space. An occupancy count is maintained for each of the building spaces by incrementing the occupancy count when the signal indicates a person entering and decrementing the occupancy count when the signal indicates a person exiting. A determination is made as to whether the occupancy count for any of the building spaces of the plurality of building spaces has reached a threshold for the corresponding building space. Action is taken in response to determining that the occupancy count for any of the building spaces of the plurality of building spaces has reached the threshold for that particular building space.

This invention belongs to the field of biology and discloses a porcine Clostridium perfringens strain SP20 that secretes and expresses high levels of α-toxin. It is deposited at the China Center for Type Culture Collection (CCTCC) with accession number CCTCC NO: M 2025386. This bacterium exhibits strong pathogenicity in medium and large-sized pigs and can be used to establish porcine challenge models and evaluate the efficacy of porcine Clostridium perfringens type A vaccines. This invention also discloses a vaccine for preventing intestinal bloating and sudden death in medium and large-sized pigs caused by Clostridium perfringens type A. This vaccine contains α-toxin produced by the aforementioned SP20 strain. This invention fills the gap in the development of pathogenic models for intestinal bloating and sudden death in medium and large-sized pigs, which is beneficial for controlling disease transmission and reducing economic losses in the livestock industry.

This invention discloses a method for expanding the volume of a composite matrix, an osteogenic composition, and its applications. The components of this invention are entirely autologous, posing no risk of immune rejection or disease transmission. The composite matrix in the osteogenic composition provides a bone conduction scaffold, while the volume-expanding agent provides bone-inducing signals while simultaneously expanding the composite matrix, thus providing a dual osteogenic mechanism. This invention requires only a conventional centrifuge and sterile containers, making it suitable for outpatient surgery. It also eliminates the need to purchase expensive bone powder, offering advantages such as ease of operation and low cost. Furthermore, the materials of this invention exhibit good stability; the composite matrix, after being encapsulated by the volume-expanding agent, does not easily dissipate and conforms well to the defect morphology.

The invention belongs to the technical field of medical cosmetology and tissue regeneration, and particularly relates to a platelet-rich plasma vacuum blood collection tube containing biotin and recombinant humanized XVII type collagen as well as a preparation method and application of the platelet-rich plasma vacuum blood collection tube. Separating the glue layer; an anticoagulant solution layer; the interior of the tube body is vacuumized, and the preset sequence of the functional solution layer, the separation gel layer and the anticoagulant solution layer is configured as follows: after blood is introduced and centrifuged, biotin and recombinant XVII type collagen can migrate from the bottom of the tube and are specifically compounded in a platelet rich plasma (PRP) layer above the separation gel layer; and forming a PRP composite liquid layer different from the red blood cell layer, the separation gel layer and the plasma layer. According to the invention, the time is saved, the pollution risk is reduced, the risks of immunological rejection and disease transmission are avoided, the immunogenicity and virus pollution risk are overcome, the stability and quality uniformity are ensured, and the method accords with the production specifications of medical apparatuses and instruments.

The utility model relates to the technical field of konjak planting, in particular to a seedling raising frame convenient to disassemble, which comprises a support assembly, a layer plate assembly is mounted on the outer wall of the support assembly in a fitting manner, a top plate assembly is mounted on the outer wall of the support assembly in a fitting manner, and a roller shutter assembly is mounted on the outer wall of the top plate assembly in a fitting manner. According to the improved seedling raising frame, the holes are formed in the first supporting frame and the second supporting frame so that the supporting frames can stretch out and draw back up and down through vertical movement of the plug pins, the height of the seedling raising frame can be adjusted, and the height between the supporting plates can be freely adjusted by adjusting the height of the first rotating bracket and the height of the second rotating bracket through the holes; meanwhile, the partition plates are additionally arranged on the supporting plate, so that the disease spreading risk is reduced, the structural flexibility is improved, disassembly and assembly are convenient, the space utilization rate is increased, the carrying difficulty is reduced, the maintenance cost is reduced, and the use environment range is expanded.

The application discloses a root cutter for preventing and controlling disease infection by using medicine in a sugarcane harvesting process, which comprises a medicine tank, an electric control proportional valve, a flowmeter, a slip ring stator pipeline, a slip ring rotor pipeline, a cutter head, a root cutter, a slip ring stator, a root cutter transmission shaft, a slip ring rotor and a control unit. One end of the slip ring stator pipeline is connected with a pump on the medicine tank in communication through the flowmeter and the electric control proportional valve; the other end of the slip ring stator pipeline is connected with a channel I of the slip ring stator; one end of a channel II of the slip ring rotor is connected with an annular groove of the slip ring stator in communication, and the other end is connected with one end of the slip ring rotor pipeline in communication; the other end of the slip ring rotor pipeline is connected with a channel III of the root cutter in communication after penetrating through the cutter head. The root cutter is designed to make the medicine water act on the sugarcane roots in the sugarcane harvesting process, so that the pathogenic bacteria in the incisions of the sugarcane roots are killed or prevented, and the risk of healthy sugarcane roots being infected by the pathogenic bacteria is effectively reduced.

The utility model discloses a duck breeding shed structure capable of feeding in a partitioned mode, and relates to the technical field of poultry breeding, the duck breeding shed structure comprises a bottom plate, a pair of wall bodies are correspondingly connected above the bottom plate, four entrances and exits are formed in the inner sides of the adjacent pair of wall bodies from left to right at equal intervals, and lifting plates are slidably connected in the entrances and exits; sliding mechanisms are arranged on the two side walls of the wall body, and the interior of the wall body is slidably connected with four partition plates through the sliding mechanisms. A pair of third sliding rails and a pair of second sliding rails are arranged on the left side and the right side of the wall body respectively, so that the four partition plates on the inner side of the wall body can flexibly move conveniently, the advantage of partition flexibility is achieved, specific duck groups can be conveniently isolated in independent areas by flexibly moving the partition plates, targeted feeding, observation and treatment are facilitated, and the duck breeding efficiency is improved. Problems in the duck group can be found and treated in time, the risk of disease transmission is reduced, and the breeding benefit is improved.

The invention provides a CT examination couch self-adaptive adjusting device and a control system, and relates to the technical field of medical equipment, the CT examination couch self-adaptive adjusting device comprises an examination couch body, the bottom of the examination couch body is provided with two storage covers; a storage groove is formed in the side face of the storage cover, a driving wheel is rotationally installed at the side end of the storage cover, and two protruding blocks opposite in position are arranged on the inner side of the driving wheel; a servo motor is mounted at the bottom of the examination bed body, and the output end of the servo motor is connected with two driving wheels through a chain group; and a storage rotating roller is rotationally mounted in the storage cover. In the whole storage and laying process, medical workers do not need to make direct contact with the disposable bed sheet, contact between the disposable bed sheet used by a patient and the medical workers is avoided, the risk that diseases are transmitted to the medical workers is remarkably reduced, and the problem that the medical workers are inevitably in direct contact with the bed sheet in the bed sheet replacing process is solved. And the risk that infectious diseases are transmitted to medical staff is increased.

The application relates to the technical field of biology, and particularly discloses an artificial synthetic dermis loaded with subacromial synovial mesenchymal stem cell composite patch as well as a preparation method and application thereof. The artificial synthetic dermis loaded with subacromial synovial mesenchymal stem cell composite patch has the advantages of convenient raw material source, no immune rejection, no supply area complications, no disease transmission risk and the like. Moreover, the composite patch provides initial mechanical support, and improves the tendon-bone interface microenvironment through the paracrine effect (including pro-angiogenic related factors) of the subacromial synovial mesenchymal stem cells, promotes host cell infiltration and blood vessel ingrowth, and enhances tissue integration and rotator cuff healing.

The utility model discloses an intelligent access control device, which belongs to the technical field of intelligent access control and comprises a shell, a bottom plate is fixedly mounted at the bottom of the shell, a top plate is fixedly mounted at the top of the shell, a rotating mechanism is arranged in the middle of the top plate, a partition plate is arranged outside the rotating mechanism, and the partition plate is fixedly mounted on the bottom plate. The outer surface of the partition plate is slidably connected with the shell, and the lower surface of the partition plate is fixedly connected with a rotating plate. According to the intelligent access control device disclosed by the utility model, the closed space is formed by the shell and the partition plate, so that the closed space is separated from other people, the position where pedestrians are to pass is rotated to be below the disinfection mechanism, and the space where the pedestrians are to pass is disinfected by the disinfection mechanism so as to be conveniently used by the next person; the effect of reducing the probability of disease infection between pedestrians is achieved, and therefore the problem that the risk of disease infection is increased due to the fact that the breath of many people exists in the same space in the prior art is solved.

This utility model provides a tiger whisker-shaped toothpick, relating to the field of toothpick technology, which solves the problem that existing toothpicks have smooth surfaces, making them inconvenient for removing foreign objects from teeth. The toothpick includes a toothpick assembly comprising a shaft, a head, and a silicone threaded strip. The head is fixedly connected to the bottom of the shaft, and both the shaft and the head are provided with silicone threaded strips. The shaft, head, and silicone threaded strip form a shape resembling tiger whiskers. One side of the silicone threaded strip has an irregular serrated shape. With the help of this toothpick assembly, foreign objects in the gaps between teeth are easily removed, reducing damage to the gums and preventing the possibility of disease transmission.

This invention discloses a method for breeding high-yielding egg-laying ducks using a self-sexing mating system. The accuracy of this method is close to 100%, significantly higher than manual vent examination for sexing; it is fast, increasing production efficiency by 5-10 times; it requires less labor, avoiding hand and eye fatigue; it has low technical requirements and does not cause disease transmission. The breeding method proposed in this invention fully utilizes the hybrid vigor of low-heritability traits, resulting in high egg production performance, with nearly 300 eggs laid at 66 weeks of age; the eggshells are bluish-green, meeting Chinese consumer preferences; adult female ducks have light brownish-yellow plumage, facilitating slaughter and processing, and increasing the value of culled ducks; this model is suitable for large-scale promotion and application.

The invention discloses a high-yield breeding method for geese. The high-yield breeding method specifically comprises the steps that 1, a site is preset; (2) fine management of breeding geese is combined with water quality regulation and control; 3) healthy breeding of goslings and water environment management; 4) dynamic feed formula and pollution discharge control; 5) preventing and controlling epidemic diseases and blocking water medium transmission; 6) standardizing a daily execution process; according to the method, the water circulation purification system is firstly constructed, the goose house is constructed on the basis of the water circulation purification system to start feeding geese, the living and activity space of the geese is guaranteed through calculation, and the problems of disease transmission, health deterioration, stress behaviors and the like are solved. Through environment control, water quality management, feed optimization and epidemic disease prevention and control, the survival rate and the egg yield are remarkably improved, and the method is an optimal scheme for large-scale goose breeding.