16results about How to "Avoid reuse" patented technology

The utility model discloses a three-dimensional printer convenient to carry, which relates to the technical field of three-dimensional printers and comprises a base, a printing platform is slidably arranged on the top surface of the base, a door-shaped frame is arranged in the middle of the base, threaded holes are formed in the bottom ends of the two sides of the door-shaped frame, and two insertion holes are formed in the two sides of the outer wall of the door-shaped frame. The printing platform is located between the inner walls of the door-shaped frame, a moving rod is slidably arranged on the side wall of the door-shaped frame, and an extruder is slidably arranged on the top face of the moving rod. Fixing blocks are fixedly connected to the two sides of the base. According to the door-shaped frame, when the door-shaped frame is dismantled, only the threaded rod needs to be rotationally dismantled, the inserting rod needs to be pulled out, then the door-shaped frame can be dismantled from the base, when the door-shaped frame is installed, reverse operation is carried out, the door-shaped frame is convenient and rapid to dismantle and install and convenient to carry, and when the door-shaped frame is in a storage state, the transverse door-shaped frame can be fixed through the inserting hole by the inserting rod. Parts are prevented from being damaged due to shaking of the door-shaped frame and the parts on the door-shaped frame when the device is carried, and the safety of the device is protected.

Some embodiments of this application provide a network connection method, apparatus, and communication module. During each network connection attempt, a candidate DNS server is selected from a DNS server list, a DNS request is sent to it, a corresponding DNS response is received, and a communication negotiation process is initiated based on the candidate IP address in the DNS response. If the negotiation fails, another candidate DNS server is selected from the DNS server list, and the above process of sending DNS requests is repeated. That is, by uniformly controlling the domain name resolution process and the communication negotiation process in the network connection process, it is ensured that domain name resolution is performed sequentially through different DNS servers within the same network connection process. Even if a DNS server successfully returns a DNS response, no further DNS requests are sent to it because the communication negotiation for the IP address in that response has failed. This avoids repeated execution of the same failure scenario within the same network connection process, reduces unnecessary time waste, and improves network connection speed.

The utility model relates to the technical field of plastic processing equipment, and disclose a kind of plastic cooling device, cooling efficiency is high and uniform: using the double cooling system of "water cooling+air cooling", water cooling realizes rapid cooling, air cooling accelerates heat dissipation, cooperate with the heat conduction layer of aluminium alloy of cooling cavity inner wall and adjustable deflector, ensure that plastic product inside and outside are uniformly cooled, avoid the deformation problem caused by local overheating or supercooling;High degree of intellectualization: realize the real-time detection and dynamic adjustment of temperature by temperature control system, without manual intervention, reduce labor cost, while ensuring the stability of cooling temperature, improve product quality consistency;Energy saving and environmental protection: water cooling system uses water circulation loop design, cooperate with the filter device in cooling water tank, realize the reuse of cooling water, reduce water resource waste;And through the energy consumption of dynamic adjustment water pump and fan, reduce overall operating cost.

The invention is applicable to the technical field of communication equipment and network security crossing, and particularly relates to a service wireless routing equipment access management system and method based on NFC touch control, a mobile terminal is used for interacting with routing equipment and submitting authentication information to a cloud management server, the cloud management server is connected with the routing equipment, and the routing equipment is connected with the mobile terminal. The cloud management server is used for carrying out identity verification on the mobile terminal based on the authentication information, and the routing equipment is used for receiving a verification result of the cloud management server and establishing connection with the mobile terminal. A touch link integrity verification TCV is introduced, a touch serial number TSID, a terminal random salt value M-Salt, a cloud signature C-Sign and a router random salt value R-Salt are used as hash input, a cloud and a router independently calculate the TCV and compare the TCV, and since the TCV is bound with a terminal side random quantity, a cloud authentication result and a router side random quantity at the same time, the terminal side random quantity, the cloud authentication result and the router side random quantity are combined, so that the terminal side random quantity, the cloud side random quantity and the router side random quantity are combined, and the terminal side random quantity, the cloud side random quantity and the router side random quantity are combined together. Even if an attacker intercepts a part of parameters, the parameters cannot be successfully replayed at other time or on other devices.

The invention belongs to the technical field of resource recovery, and particularly relates to a method for preparing a lithium ferric manganese phosphate precursor by recycling a waste phosphate positive electrode material as well as a product and application thereof. The method comprises the following steps: S1, dispersing waste phosphate positive electrode material powder in a phosphoric acid solution for reaction, and filtering after the reaction is finished to obtain filter residue 1 and filtrate 1; s2, adding a metal source into the filtrate 1 for reaction, continuously heating, and filtering after the reaction is finished to obtain filter residues 2 and filtrate 2; and S3, drying the filter cake to obtain the rhodochrosite type ferric manganese phosphate precursor. The method for preparing the ferric manganese phosphate precursor by regenerating the waste phosphate positive electrode material is more environment-friendly, more elements are recycled, and the comprehensive utilization rate of the elements is high.

An aerosol-generating device is disclosed. An aerosol-generating device includes a body and a cartridge coupled to the body. The cartridge includes: a cartridge body containing an aerosol-generating substance; an absorbing member accommodated in the cartridge body, at least partially exposed to an exterior of the cartridge body, and configured to absorb an aerosol-generating substance; and a lock portion protruding in an inward direction of the cartridge main body and inserted into the absorbing member to be coupled to the absorbing member.

The invention discloses preparation of a magnetic response Pickering emulsion microreactor and application of the magnetic response Pickering emulsion microreactor in enzyme catalysis of ester compounds. The invention provides a preparation method of magnetic agar nanoparticles, which comprises the following steps: reacting prepared Fe3O4 nanoparticles with TEOS and APTMS to obtain Fe3O4-SiO2-NH2 nanoparticles, and then reacting the Fe3O4-SiO2-NH2 nanoparticles with modified agar nanoparticles to obtain the magnetic agar nanoparticles. The magnetic agar nano-particles can be used for constructing a magnetic response type Pickering emulsion, the magnetic response type Pickering emulsion is used for enzyme catalysis of ester compounds, rapid demulsification and oil-water separation of the emulsion can be achieved by utilizing an external magnetic field, and the magnetic agar nano-particles have good reusability and catalytic stability.

The application provides a direct assimilation method and device for ground-based microwave radiometer data, wherein the assimilation method comprises the following steps: establishing an all-weather observation operator for ground-based microwave radiometer observation data; establishing a tangent linear adjoint model of the all-weather observation operator for ground-based microwave radiometer observation data; performing cloud scene identification on the ground-based microwave radiometer observation data to obtain a cloud scene identification result; establishing a background field covariance matrix and an observation error matrix according to the cloud scene identification result, a numerical prediction model background field and the all-weather observation operator; and determining a numerical prediction model analysis field according to the background field covariance matrix, the observation error matrix, the all-weather observation operator and the tangent linear adjoint model of the all-weather observation operator. The method can realize direct assimilation of ground-based microwave radiometer data in a numerical prediction model, thereby effectively avoiding the problems of inversion product error in indirect assimilation and repeated use of model background field information.

The invention discloses an unmanned aerial vehicle authentication and key negotiation system and method based on PUF and chaotic mapping, and relates to the field of information security and cryptographic protocol security. The system generates a unique challenge-response pair through an unmanned aerial vehicle terminal PUF module to complete registration, a four-way handshake mechanism is adopted in the authentication stage, a session key is dynamically generated in combination with Henon chaotic mapping, the number of chaotic iterations is hidden through XOR operation, and identity legality is guaranteed through multi-layer MAC verification. According to the method, secret keys do not need to be pre-stored, the PUF physical unclonability and the chaotic mapping sensitivity are utilized, anonymous authentication and forward security are achieved, lightweight computing adapts to unmanned aerial vehicle resource constraints, various attacks are effectively resisted, and communication security is guaranteed.

This utility model discloses an auxiliary device for hyperthermia in oncology, relating to the field of medical auxiliary technology. To address the time-consuming and labor-intensive use of felt pads and water bags in clinical practice, this utility model designs an auxiliary device for hyperthermia in oncology. Its structural features mainly focus on: a coupling sleeve and a heat insulation structure. The coupling sleeve is securely fitted onto the electrode plate. When the electrode plate is adjusted for treatment, the coupling sleeve can be adjusted accordingly, eliminating the need for medical staff to make adjustments throughout the treatment, thus improving the efficiency of radiofrequency hyperthermia. The coupling sleeve is made of stable medical-grade rubber, suitable for radiofrequency hyperthermia. Multiple layers of flexible and thermally stable heat insulation are filled inside the coupling sleeve. This lowers the skin surface temperature and allows for better adhesion to the skin surface. Through effective heat insulation layering during radiofrequency hyperthermia, excellent heat insulation is ensured, concentrating heat in the treatment area and reducing heat loss and impact on surrounding tissues.

The utility model relates to pre -filled medicine bottle technical field, concretely relates to provide the device and pre -filled syringe of hidden needle and injection needle head prevent stab protection, and the device includes hidden needle cover, medicine storehouse shell, locking sleeve, medicine bottle support, locking sleeve top rod, and the inside of medicine storehouse shell sets up hidden needle cover, the top of hidden needle cover sets up locking sleeve, and the inside of locking sleeve sets up medicine bottle support, and the inside for setting up pre -filled medicine bottle of medicine bottle support, the bottom of locking sleeve and the top of hidden needle cover mutually inlay, and, the top of medicine bottle support sets up locking sleeve top rod, when not injecting, locking sleeve and hidden needle cover can freely move, after completing injection, locking sleeve top rod can lock locking sleeve, makes hidden needle in pre -filled medicine bottle inside unable to expose. The utility model can realize the needle head of not injecting, and does not influence the removal of hidden needle protection cap, provides the friendly experience to the needle user, after injection, locks hidden needle cover, avoids the exposure of hidden needle, prevents the needle head from injuring the relevant personnel, improves the use safety.

The utility model discloses a solid-phase extraction device for electronic atomization liquid, belonging to the technical field of solid-phase extraction. It includes an extraction box. Inside the extraction box, there is an extraction tray. The top of the extraction tray is processed with a plurality of placement holes distributed at equal intervals. An extraction column is placed inside each placement hole. Above the extraction tray, there is a top plate. The top of the top plate is provided with through holes having the same number as the placement holes. A cover plate is hinged at the top of each through hole. The extraction tray is connected to the extraction box through a lifting mechanism. A collection component is arranged below the extraction tray. By arranging a top plate above the extraction tray in the utility model, the multiple cover plates on the top plate correspond to the multiple extraction columns one by one. When the cover plates seal the through holes, they can play a sealing role for the extraction columns, avoiding impurities from falling into the extraction columns and affecting the extraction effect. Moreover, when using the extraction columns, the cover plates can be closed to help the staff quickly distinguish whether the extraction columns have been used, so as to avoid the repeated use of the extraction columns and reduce the workload of the staff.

The utility model discloses an anti-edge-warping self-adhesive label which comprises a placing plate, a specification plate is arranged on one side of the placing plate, a two-dimensional code plate is arranged on the other side of the placing plate, a label groove is formed in one end of the placing plate, and an anti-counterfeit label is arranged in the label groove. Through the cooperation of the ink bin, ink, the connecting plate, the first non-setting adhesive plate, the second non-setting adhesive plate, the sealing rubber plate and the sealing rod, after a label is torn off, the ink can enter the label groove, so that the anti-counterfeit label is soaked, information on the label is blurred, the label is prevented from being repeatedly used, and the anti-counterfeit label is prevented from being damaged. Meanwhile, through cooperation of the specification board, the first magnet, the second magnet and the two-dimensional code board, the non-key specification board and the non-key two-dimensional code board can be hidden, the position occupied by the label is reduced, and when detailed information needs to be observed, the two-dimensional code board and the specification board can be turned out for observation.

The utility model discloses a kind of subassembly connecting structure of combined injection device, including first subassembly and second subassembly;The first subassembly is used to install for medicine bottle;The first subassembly is provided with first guide structure, first buckle cooperation structure and second buckle cooperation structure;The second subassembly is used to play the role of push injection;The second subassembly is provided with second guide structure, third buckle cooperation structure and fourth buckle cooperation structure;The second guide structure is used to be movably cooperated with first guide structure, and third buckle cooperation structure is used to be buckled with first buckle cooperation structure;Fourth buckle cooperation structure is used to be buckled with second buckle cooperation structure.The utility model makes the connection of first subassembly and second subassembly be relatively simple, fast, can save connection time, improve connection efficiency, and after assembly, it is not disassembled, avoid repeated use.