31results about How to "Overcoming Technical Barriers" patented technology

The invention provides a method for synthesizing lithium bis(fluorosulfonyl)imide. The synthetic method of the lithium bis(fluorosulfonyl)imide is characterized by comprising the following steps: (1) in a nitrogen atmosphere, sufficiently mixing bis(fluorosulfonyl)imide and an organic solvent, and putting a mixture into a reactor with a condenser; sequentially adding lithium fluoride and liquid-state hydrogen fluoride into the reactor and raising the temperature to react; (2) reducing the temperature of a reaction system, and decompressing and displacing by nitrogen to completely remove residual hydrogen fluoride gas, and filtering a reaction solution under the nitrogen atmosphere to remove insoluble matters, so as to obtain filtrate; (3) concentrating the filtrate by utilizing a high-vacuum decompression and desolvation method; (4) cooling a concentrated solution and adding a low-polarity solvent; recrystallizing at low temperature, and filtering and carrying out decompression and drying treatment at 40 DEG C to obtain the pure lithium bis(fluorosulfonyl)imide. The synthetic method has the advantages that used reagents are cheap and easy to obtain, a preparation process is simple, a reaction is rapid and complete, a few of byproducts are produced and are easy to remove, a post-treatment manner is simple and convenient, a product has high purity and the synthetic method is very suitable for industrial production.

The invention discloses a method for realizing auxiliary planning and design based on AutoCAD general graphic objects, which comprises the following steps: Step 1, establishing the corresponding relationship between graphic elements and graphic entities of planning and design. Step 2, establishing a graphic entity model of the physical object. Step 3: Read the graphic entity model established in Step 2 through the secondary development interface of ObjectARX for planning and design. The present invention adopts the above-mentioned technical scheme, which is more open and versatile, saves time, improves efficiency, and guarantees application compared with various planning aided design methods currently used in the planning and design industry, and has broad application in the planning and design industry. Application prospects.

The invention relates to a method for realizing a universal credit card of real-name system electronic commerces and electronic governments, which is applied in various real-name system electronic commerce and electronic government activities. The method is characterized in that a serial number which is in a radio frequency IC card (RFID) and is inherent in a production factory and a cardholder ID card number which is stored are adopted to combine into a registered number which can be recognized and used by various electronic commerce systems and electronic government systems together. A method for distinguishing the false and authenticating of the invention comprises: storing a name, a mobile phone number and a manual password of a card holder into a registration number domain of the electronic commerce systems when a card is sent and licensed and adopting: firstly, a combination attestation mode of the manual password and the registered number in the IC card, secondly, the combination attestation mode of the mobile phone number and the manual password, thirdly, the combination attestation mode of the registered number in the IC card, the manual password and the mobile phone number when electronic commerce activities are carried out. Double mobile and network channels are adopted to finish the electronic commerce and electronic government activities to realize the universal credit card of various electronic commerces and electronic governments.

The invention provides a preparation method of a printed circuit board. The method includes the following steps of: S1, copper foil arrangement: copper foil is arranged on a carrier in a manner that the copper foil is aligned with the carrier, and the copper foil and the carrier are composited; S2, laser cutting: laser cutting is performed on the pattern of the circuit diagram of a circuit board;S3, selective peeling: an aluminum substrate is coated with photoresist, and a mask with a circuit diagram is arranged on the aluminum substrate, and the aluminum substrate is selectively exposed according to the pattern of the circuit diagram, so that the non-circuit portion of the circuit diagram loses viscosity; and S4, printed circuit board preparation: the copper foil arranged on the carrieris aligned with the aluminum substrate, so that the circuit diagrams of the copper foil and the aluminum substrate are completely overlapped with each other, and the copper foil of a circuit portion is completely bonded to the aluminum substrate, and the copper foil of a non-circuit portion is peeled off. According to the preparation method of the invention, the circuit board is inscribed by a laser cutting method, so that chemical etching can be avoided in a production process; and waste copper can be directly recycled, and therefore, a great environmental protection value can be realized with cost reduced. With the method adopted, a new idea is provided for the production of copper foil for circuit board.

The invention relates to a method for producing a high-purity donepezil hydrochloride anhydrous I type crystal form and a product thereof, belonging to the technical field of drug synthesis. The method comprises the following steps of: re-crystallizing a donepezil hydrochloride polycrystal type crude product or an amorphous donepezil hydrochloride crude product with a lower alcohol solvent to obtain a donepezil hydrochloride I type crystal form wet product; and drying in vacuum and cooling to the room temperature to obtain a high-purity donepezil hydrochloride anhydrous I type crystal form finished product under the protection of nitrogen, wherein KF is less than 0.5%; the purity reaches more than 99.5%; and single impurity is less than 0.1%. The invention has the advantages of simple production method and fewer steps, is suitable for industrial production, has better crystal form of the product and great significance to pharmacy, sale and storage of the product, and overcomes technology barriers.

The invention discloses a system and a design method of an SOA-based application system platform architecture, by designing a base layer, a platform layer, an interface layer, an application service layer, a subnet interface layer, and a subnet layer in the SOA application system platform; and Through the unified external interface specification of the platform, the unified external interface of the platform and the interconnection of external systems, a SOA architecture principle, loose coupling, coarse-grained, strong adaptability to changes in user systems, and completely different from ESB / EMB platforms are realized. The new SOA-based application system platform architecture is suitable for the construction of small and medium-scale system platforms, especially for "information island" systems with relatively concentrated business. The invention solves the problems that the ESB / EMB platform structure is too loose, the investment cost is large, the construction period is long, and the cooperation of different manufacturers is difficult.

The invention provides a method for screening single memory B cells and its application in the preparation of small molecule monoclonal antibodies. Based on flow sorting technology and microfluidic technology, the present invention realizes the organic combination of precise screening of antigen-specific memory B cells and efficient preparation of single-cell transcripts in a microenvironment, and further performs single-cell variable region pre-amplification , prokaryotic expression of scFv and eukaryotic expression of monoclonal antibody. Establish a new type of monoclonal antibody preparation technology to provide a new method for the preparation of small molecule rabbit monoclonal antibodies.

The invention discloses a method for editing VR images by using coordinate transformation, aiming at solving the problem in the prior art that the area of ​​the VR panorama loses its original stereoscopic effect by directly pasting a rectangular frame on the VR panorama; By placing the VR panorama on a virtual three-dimensional spherical surface, by determining the projection plane of the VR panorama to obtain the coordinates of the VR panorama in the three-dimensional coordinate system, and directly editing the VR panorama in the three-dimensional coordinates, the final obtained The imaging effect of the VR panorama is better. Compared with the existing way of editing images directly on the VR panorama plane, the edited VR panorama finally obtained by the present invention has a better three-dimensional sense and a better sense of immersion, enabling users to experience better VR imaging effect; the present invention is applicable to related fields of VR image processing.