15results about How to "Big choice" patented technology

This utility model relates to a damping hinge structure and computer equipment, including a monitor front cover, a damping hinge, and a monitor rear cover. The monitor front cover is assembled with the monitor and detachably connected to the monitor rear cover. The damping hinge includes a central shaft and two cable guide slots. The central shaft is assembled with the monitor front cover, and the two cable guide slots are located at both ends of the central shaft. Each cable guide slot includes a nut mounting slot and a semi-open cylinder for assembling cables. Threaded connecting rods are provided at both ends of the central shaft, passing through the nut mounting slots and connecting to damping adjustment nuts. The cable guide slots are fixedly connected to the monitor bracket, and their semi-open cylinders have cable passage openings. This application, while allowing adjustment of the monitor angle, also enables cable routing within the device and allows the use of thicker cables without increasing the size of the monitor hinge connection. Furthermore, this application improves assembly manufacturability and after-sales maintainability, reducing manufacturing and after-sales costs.

The invention belongs to the technical field of projection optical lenses, and discloses a projection lens which can form a lens structure with a long back focal length through three lens groups which are respectively used for focusing, zooming and fixing, can obtain higher brightness and contrast through the lens structure with the long back focal length, and is more beneficial to heat dissipation. On the basis, continuous zooming can be achieved through the first zoom lens set, the second zoom lens set and the third zoom lens set which independently move along the optical axis, and meanwhile under the condition that the back focal length is long or the length of the lens is fixed, through the design in the aspects of back focal length control, lens materials and / or lens gluing and the like, continuous zooming can be achieved. The problems of chromatic aberration and difficult light correction caused by a long back focal length lens structure can be solved in the aspects of aberration, chromatic aberration and the like, the contrast ratio and the brightness are better improved, and the purposes of long back focal length, high brightness, low chromatic aberration, low distortion, large aperture and high imaging quality of the projection lens are finally achieved.

A nasal mask for sealing the area from the nose tip to the upper lip of a user has a flexible portion curved toward the face of the user, the flexible portion having at least one protrusion and a chamber containing a gas, a first opening facing the face of the user and at least one second opening configured to receive a continuous positive pressure gas flow into the flexible portion, the flexible portion further comprises a sealing portion which, in use, surrounds the user at least including the nose tip and the first and second nostrils and abuts against the face around the nostrils, has at least one thin region and a support region thicker than the thin region, the nasal mask can be further provided with a rigid part with at least two connecting ports, an exhaust port with at least one hole opening and a spring structure with a foldable wall, the opening of the nasal mask can be adjusted according to the nose of the user through the design of the spring structure, and the sealing performance and comfort of the nasal mask are further improved.

This invention discloses a design method for a cooperative target pose observer based on a novel potential function, used for real-time position and attitude estimation of cooperative targets in space. Common pose estimation methods typically include static and dynamic methods. Dynamic methods combine observation information with the system's kinematic or dynamic information, and under the same conditions, usually yield better estimation results than static methods. As a dynamic estimation method, the observer is valued for its simple structure and ease of application. Addressing the problem of the limited variety of potential functions commonly used in current pose estimation observers, this invention, based on existing potential functions, proposes a method for constructing an observer based on a novel potential function. This method can be used for synchronous relative pose estimation during operations by a space robotic arm on a cooperative target. The observer derived from the novel potential function designed in this invention not only possesses the same theoretical stability characteristics as existing observers but also demonstrates better estimation performance in practical applications.

The utility model belongs to the LED photoelectric technical field, and specifically relates to an LED structure comprising a first substrate and a second substrate, the first substrate is internally provided with a bowl cup, the second substrate is provided with a positive electrode pad and a negative electrode pad which are connected with the bottom surface of the bowl cup, and the positive electrode pad or the negative electrode pad is provided with a die bonding area at a position in the bowl cup. A wafer and an electric lead used for conducting an electrode on the surface of the wafer with the positive electrode bonding pad or the negative electrode bonding pad are arranged on the wafer fixing area, the periphery of the wafer and the periphery of the electric lead are wrapped with packaging colloid, and heat conduction columns are further arranged at the positions, corresponding to the positive electrode bonding pad, the negative electrode bonding pad and the wafer fixing area, in the second substrate respectively. According to the utility model, an electroplating or sputtering coating design process adopted by a traditional support is broken through, compared with an integrated support mold opening electroplating, the manufacturing cost of design and development is lower, the flexibility of design and development is higher, and the support has the advantages of better product practicability, better compatibility, better effect and performance and the like.

The present application relates to the field of microbial technology, in particular to Citrobacter werkmanii and its application. The present application provides Citrobacter werkmanii SDT3 with dual functions of denitrification and cobalt (III) reduction under aerobic conditions, and the preservation number is CCTCC NO: M 2025956. The strain can efficiently realize aerobic denitrification reduction of nitrate and nitrite under aerobic conditions without additional ammonia nitrogen, and simultaneously complete the synchronous reduction of cobalt (III) -histidine complex (Co(III)His). The strain is suitable for treating flue gas denitration failure absorption liquid containing Co(III)His, nitrate and nitrite, has the advantages of high absorption liquid regeneration efficiency, mild process conditions, wide application range of organic carbon source, no secondary pollution, easy engineering application, etc.; can provide an efficient and stable microbial technology solution for efficient regeneration of flue gas denitration absorption liquid, long-term continuous and stable operation of the denitration system.

The present invention discloses a universal application circuit and method for three-phase, two-phase, and single-phase resistance sampling, wherein the application circuit includes: a rectifier bridge, used to convert input alternating current into pulsating direct current; a filter and voltage stabilization circuit, used to filter the direct current and stabilize the bus voltage of the direct current; an inverter circuit, used to convert the direct current into alternating current; a sampling circuit, used to sample the alternating current; and a sampling and amplification circuit, used to amplify the voltage obtained by sampling. The present invention adopts a universal adaptive structure in hardware, and the user can conveniently switch back and forth on the three-resistance, two-resistance, and single-resistance system without changing the PCB. It has a larger choice of cost and efficiency in different application scenarios, and better meets the needs of users with different needs. It is more flexible and applicable, and can be widely used in the field of resistance sampling and detection technology.

The invention provides an energy-saving and environment-friendly MRI (Magnetic Resonance Imaging) shielding room and an installation method thereof, and relates to the field of electromagnetic shielding and medical treatment. The energy-saving and environment-friendly MRI shielding room comprises a wall surface and a top shielding layer, the wall surface and the top shielding layer are each composed of a composite integrated plate, the composite integrated plates are assembled and combined, laser welding is adopted at the splicing seams, and the wall surface is connected with the top shielding layer and the ground shielding layer in a welded mode through transition pieces; and the ground of the shielding chamber is formed by splicing and welding galvanized thin steel plates. By adopting the composite integrated plate and the laser welding technology, the energy-saving and environment-friendly requirements are met, the concept of green development is embodied, the burden on the environment is reduced, complex links in a traditional construction method are reduced, and the installation efficiency is improved. Through clear steps and technical specifications, perfect combination and sealing of all layers in the construction process are ensured, and the risk of human errors is effectively reduced. And the combination of the self-leveling material and the damp-proof layer is used, so that the stability and durability of the foundation structure are enhanced, and the whole construction process is simpler, more convenient and quicker. According to the shielding chamber, the shielding effect of the composite integrated plate is exerted, and the application field of the shielding chamber is expanded, such as the electromagnetic shielding field.

The invention discloses a MoS2 / graphene / Mxene composite film and a preparation method thereof. The film has MoS2 and graphene as the film body, and graphene and Mxene as the film coating. The preparation method comprises: preparing a single-layer MoS2 nanosheet, preparing an electrospinning solution of a single-layer MoS2 nanosheet and graphene, preparing a MoS2 / graphene composite film by electrostatic spinning, and obtaining a MoS2 / graphene / Mxene composite film by high-voltage electrostatic spraying. The MoS2 / graphene / Mxene composite film prepared by the invention is thin, light, flexible, and bendable, has a controllable thickness, is easy to assemble, and has excellent electrical conductivity, and can realize efficient circulation of lithium batteries. The preparation method adopts electrostatic spinning and electrostatic spraying technology, and has the advantages of good composite effect, simple process, high preparation efficiency, and low cost.

The invention provides an integrated clinostatism dental diagnosis system, which belongs to the technical field of dental diagnosis, and comprises a dental chair, the dental chair adopts a horizontal structure to realize stable lying and positioning of a patient; the diagnosis module is used for acquiring the image data to determine the disease cause of the patient; the diagnosis module comprises a control device, a high-voltage generator in communication connection with the control device, and an X-ray tube head used for controlling to release X-rays for shooting after the high-voltage generator receives a signal of the control device; the interlocking device is used for controlling the dental chair and the diagnosis module to be locked in an alternative mode; according to the system, patients with limited body functions can conveniently see a doctor, motion artifacts are reduced, the system has the advantages of being high in universality and low in cost, meanwhile, instant film reading is achieved through rich interfaces, the diagnosis efficiency is improved, integration of dental clinostatism shooting and diagnosis and treatment is achieved through combination of the diagnosis module and the interlocking device, and the diagnosis and treatment efficiency is improved. And a more efficient, convenient and safe diagnosis and treatment solution is provided for dental clinics.

The method for producing hot-press transfer decorative reflective tapes using heterogeneous strip combination splicing and pattern cutting technology includes the following steps: (S1): Selecting a certain thickness of heat-resistant (high) pressure-sensitive adhesive film and dividing it into strips of a fixed width, and selecting reflective materials with matching thickness within the allowable range of process requirements and heterogeneous light-functional materials that are different from them, and peeling the film into strips of a fixed width; (S2): Combining heterogeneous strips with splicing seams (L) and / or open seams (K) side by side to form a color combination or functional combination, forming the first finished product; subsequently, (S3): cutting and removing waste to form a pattern, forming the second finished product; This method has the advantages of a wider selection space for light-functional materials, more flexible and precise pattern making, short production cycle and low production cost, and can especially produce decorative engraved reflective tapes with higher luminous brightness that cannot be produced by existing technology, achieving both high-brightness reflection and high-brightness luminescence, and the reflective area is not too thick.

The present application relates to a preparation method of glufosinate. Specifically, it relates to a method for preparing glufosinate represented by formula (I) or a salt, an enantiomer or a mixture of enantiomers in any ratio thereof, which comprises reacting a compound of formula (II) with a compound of formula (III), and hydrolyzing the reaction product to obtain the compound of formula (I). The method of the present application has higher substrate reactivity, milder conditions for the construction of P-C bond, lower reaction temperature, and can reduce the racemization of L-form at high temperature, thereby improving the retention of L-form during the preparation of L-glufosinate.

The present invention discloses a guanidine polymer and its preparation method and use. The guanidine polymer has a structure of R-NH-a-R'; wherein a includes at least one structural unit shown in the general formula (A); R and R' are each independently selected from hydrogen, a structural unit having one or more of the structures shown in (Formula 21) to (Formula 25), and R and R' are not hydrogen at the same time. The preparation method of the guanidine polymer includes: selecting at least one guanidine salt having a structure shown in the general formula (3) and at least one double-terminal amino diamine having a structure shown in the general formula (4) for condensation polymerization; and then performing the end-capping reaction with an end-capping agent. The guanidine polymer of the present invention has high end-capping reaction efficiency during the synthesis process and can be carried out under mild conditions; the production and product safety are both high, and the product quality of the grafted polymer produced subsequently is improved.

The utility model discloses a kind of line passing pivot structure and computer equipment;Line passing pivot structure includes display connecting front and rear cover, damping hinge, pivot connecting piece and damping hinge press plate;Pivot connecting piece includes damping hinge installation slot hole and half open cylinder, and connecting place is equipped with damping hinge disassembly and unfastening process hole;Half open cylinder front end is equipped with line passing port, rear end is equipped with the mounting plate with threaded hole;Display connecting front cover is equipped with damping hinge installation slot;Damping hinge is installed in damping hinge installation slot and damping hinge installation slot hole, left and right each one, symmetrically mounted, and fixed by damping hinge press plate and display connecting front cover compression tight;Cable is laid horizontally into half open cylinder. The present application can also make cable wiring inside equipment under the prerequisite of adjusting the angle of display, and thicker specification cable can be used without increasing the size of display pivot connecting part. Furthermore, the present application also improves the process of assembly and post-sale maintainability, reduces manufacturing and post-sale cost.

The present application relates to a method for preparing glufosinate-ammonium. Specifically, it relates to a method for preparing glufosinate-ammonium or its salt, enantiomer or a mixture of enantiomers in any ratio represented by formula (I), comprising the following steps: hydrolyzing the compound of formula (IV) to obtain the compound of formula (I). The method of the present application can avoid or reduce the halogenated hydrocarbon by-product in the Michaelis-Arbuzov reaction due to the difference in reaction mechanism, prevent the halogenated hydrocarbon by-product from damaging the ozone in the atmosphere, and accordingly, also save the separation, purification and collection of the above-mentioned by-products and engineering input, and also avoid the potential environmental and safety risks brought by the above-mentioned by-products.