2results about How to "Variable size" patented technology

The utility model discloses a split type down lamp outer cover and down lamp thereof, including the shell, the top of shell is disconnected and is connected with the lamp cover, and the inside of shell is provided with accommodating chamber, and the lamp cover is used for sealing the top of shell, and the disconnection and connection is convenient for dismounting and transportation, and the accommodating chamber and the shell are integrally formed and convenient for installing the lamp, the utility model discloses through the split type structure design of upper outer cover and lower outer cover makes each part can produce alone, flexible assembly, and the split direct stamping can, and the split can be fitted together, and the occupied space is reduced greatly, and the packing and the logistics cost in the transportation process are reduced, guaranteeing the light output symmetry through the central arrangement of LED board lamp pearl, and the light cup of inner wall is handled through high reflection, and the scattered light of lamp pearl is gathered effectively, and the light utilization rate is improved, the quick fixing of down lamp is realized through the elastic deformation of lamp decoration spring clamp, and the top is sealed through the lamp cover, and the impurities such as dust, water vapor are blocked.

The application discloses a kind of synthesis method of spherical polymer nanoparticles, it is related to vaccine technical field, and the method comprises the following steps: polyvinylpyrrolidone is dissolved in mixed solvent, then glyoxal, ascorbic acid and ethylenediamine are added in turn respectively, after stirring for a certain time, the color of solution obviously changes from yellowish to wine red.The solution containing prepolymer is transferred into reaction kettle, the reaction kettle is put into oven to react, the previous prepolymer will further crosslink and polymerize, form nonlinear network polymer skeleton, through repeated centrifugation and ethanol washing, finally drying can obtain the target spherical nanoparticle material.The application uses ascorbic acid as raw material, ethylenediamine as initiator and connecting agent, glyoxal as crosslinking agent, successfully synthesizes a kind of brand-new polymer nanoparticle, simultaneously realizes efficient antigen delivery and specific activation B cell, and is a kind of brand-new ideal vaccine adjuvant with promising application.