41 results about "Particle technology" patented technology

New molecularly imprinted polymers are described, and a method for their production using novel particle technology based on multifunctional placeholder templates.

The invention relates to the technical field of food healthcare products, and in particular relates to a highland berry enzyme effervescent tablet and a preparation method thereof. The highland berry enzyme effervescent tablet comprises the following raw materials by weight percent: (1) an enzyme stock solution; (2) effervescent tablet bodies. The production method of the highland berry enzyme effervescent tablet comprises the following steps: 1, preparing the enzyme stock solution; 2, freezing drying the enzyme stock solution to obtain enzyme stock powder in an atomizing manner; 3, preparing enzyme granules; and processing the enzyme stock solution into particles by adopting a gas saturation solution particle technology; 4, tabletting the enzyme stock powder according to a formula; preparing the effervescent tablet under the condition that the relative indoor humidity is less than 25% and the indoor temperature is less than 18 DEG C. Highland berry enzyme disclosed by the invention is composite enzyme, by integrating the characteristics of a plurality of kinds of highland berries, the nutrients are greatly increased compared with traditional enzyme, and by taking the enzyme, not only can an effect for supplementing the vitamin C be realized, but also an effect for supplementing multiple active ingredients can be realized.

The invention discloses a ferroferric oxide calcium phosphate nuclear shell magnetic nanoparticle and a preparation method thereof by a biological mineralization method and belongs to the technical field of magnetic particles. A magnetic ferroferric oxide nanoparticle serves as a core, wherein the mean grain size of the particle is 27 to 38nm; and a calcium phosphate material serves as a shell layer, wherein the thickness of the shell layer is 4 to 20nm. The preparation method comprises the following steps that the ferroferric oxide magnetic nanoparticle is prepared and then is modified by a surface modifier; the modified ferroferric oxide magnetic nanoparticle is added into simulated human body fluid which is prepared and has the concentration of 1 to 10 times; the modified ferroferric oxide magnetic nanoparticle is mineralized; and the product is washed, subjected to magnetic separation and dried to obtain the ferroferric oxide calcium phosphate nuclear shell magnetic nanoparticle. The preparation method is simple in operation, mild in preparation process condition, wide in raw material source and environment friendly. The prepared nuclear shell nanoparticle has biological activity and has good application prospect in the field of biomedicine, such as tissue engineering and medicine carrying.

The invention discloses a method for detecting an object to be detected by using an SPR biosensor. The method uses a biotin-streptavidin-magnetic particle as a signal reporting molecule which can amplify a signal of a hybridization result; therefore, the problem that marking of a probe or an object to be detected before hybridization influences natural binding of biological molecules is avoided, the requirement of improving detection sensitivity of the SPR biosensor is realized, and generated signals are stable and are easy to detect, which enables result detection and analysis to be substantially simplified. According to the invention, amplification of a detection signal is realized after hybridization, so variation and variation quantity of SPR signals before and after the detection signal is amplified can be more visually and clearly observed; meanwhile, the biotin-streptavidin-magnetic particle technology is used in the invention, and no expensive detector is needed, thereby reducing technical cost and economic cost needed for enhancing sensitivity of the biosensor.

The invention provides a SnO 2 ‑GAC particle and its preparation method and application, the invention belongs to the field of material chemical particle technology, the SnO 2 ‑GAC particles are made from abundant waste crops in Guangxi, SnCl 4 ·5H 2 O is a modifier, caustic is an activator, and transition metal oxide SnO is used 2 In situ modification, loaded particles prepared by microwave method. The particles are evenly loaded, and the modifier is not easy to fall off during the electrochemical treatment of wastewater, and when the particle electrode is used as a particle electrode to treat 4-chlorophenol wastewater in a three-dimensional electrochemical reaction, the removal rate of 4-chlorophenol can reach more than 95%. Improve the treatment efficiency of 4-chlorophenol wastewater.

The invention discloses a chromogranin A chemiluminescence immunoassay reagent kit and a preparation method of the reagent kit. The reagent kit comprises the following ingredients: 1) chromogranin A standard products; 2) horseradish peroxidase labeled chromogranin A monoclonal antibodies; 3) chromogranin A monoclonal antibody covered magnetic particles; 4) white non-transparent micro porous plate; 5) cleaning solution and 6) chemiluminescence substrate A and B work solution. The chemiluminescence immunoassay and the nanometer magnetic particle technology are combined, and the chromogranin A chemiluminescence immunoassay reagent kit is provided. The defects of low sensitivity and poor accuracy of the traditional enzyme-linked immunosorbent assay (ELISA) method are overcome, the radioactive pollution of the radioimmunoassay (RIA) technology is avoided, and the chromogranin A chemiluminescence immunoassay reagent kit and the preparation method thereof have the advantages that safety is realized, the environment is protected, the specificity is high, the sensitivity and the accuracy are high, and the like.

The invention relates to an air flow display method based on a laser induced particle technology, which organically combines the laser induced particle technology and a flow display technology. By adopting the laser induced particle technology, particles can be excited from the surface of an experimental model to realize the visualization of flow field information without introducing an additionalparticle generating device. The particles that are directly induced on the experimental model by using a laser particle induction technology are relatively evenly distributed in a flow field, so thatthe missing of local flow information caused by the uneven distribution of artificially added particles can be avoided, and the display of specific flows such as the boundary layer flow can be facilitated.