59results about How to "Embedding" patented technology

A composite magentic microsphere for molecular blot polymer, based on molecular blot technique, is prepared from different substances as template moleculae (blot moleculae), different monomers as function monomer and the mother material of polymer, and different powdered metals (or their oxides) as magnetic component through reversed-phase emulsion polymerization and suspension polymerization. It can be used for separating similar compound, chiral compound, by-product and trace compound with more precision and simple process.

The invention provides an embedded structure for pile foundations of high pile foundations, which belongs to the technical field of pile foundation auxiliary structures, and includes a base body embedded in the ground and a pile body detachably connected with the base body; the base body includes a base body A first cavity is opened inside the base, and a through hole communicating with the first cavity and allowing the pile body to be inserted into the first cavity is opened on one side of the base. The first The cavity and the through hole form a convex structure; one end edge of the pile body is hingedly provided with a number of limit rods. In the embodiment of the present invention, by opening the first cavity inside the base, after the pile body drives the limit rod into the first cavity, the back support assembly is used to drive the pile body to move away from the first cavity, and then drive The limit rod moves, and the limit rod is used to brace diagonally to the top wall of the first cavity, thereby realizing the embedding of the pile body. Compared with the prior art, it has the advantages of stable connection of the pile body and convenient installation.

The invention provides a gelatin-polyacrylic acid composite nano microsphere of platinum-containing drugs, wherein, the surface of the nano microsphere is charged gelatin molecules, and the inner part is uncharged polyelectrolyte which is formed by the electrostatic interaction between the gelatin molecules and polyacrylic acid molecules; the platinum-containing drugs form a chemical coordinationeffect with the carboxyl group in the system to combine on the nano microsphere, wherein the mass of the platinum-containing drugs accounts for 5-45% of that of the composite nano microspheres, the content of gelatin accounts for 45-70% of the quality of the composite nano microspheres; the content of polyacrylic acid accounts for 10-25% of the quality of the composite nano microspheres, and the even grain diameter of the nano microspheres is 50-200 nanometers. The gelatin-polyacrylic acid composite nano microsphere loading with platinum-containing drugs can be used for being prepared into natural polymer hydrogel; the hydrogel not only possesses good biocompatibility and can be implanted in vivo and pasted on the position of the tumor in the process of surgical operation, but also can substantially improve the dosage of the platinum-containing drugs without adding the systematic toxic and side effect of drugs due to the characteristics of high drug-loading rate and slow-paced dual slow release of the hydrogel.

The invention discloses a method for preparing molecular cage starch, which relates to a method for preparing starch. It solves the problem that cyclodextrin is not suitable for the adsorption of macromolecules and extremely small molecules, and the production process is complicated, the production cost is high, the slow-release performance is relatively poor, and the structure of porous starch is unstable and easy to collapse, resulting in low physical properties. In the original starch problem. Preparation method: 1. making starch paste; 2. ball milling starch paste; 3. drying and pulverizing; 4. molecular cross-linking; 5. grafting and saponification; 6. precipitation and vacuum filtration. The molecular cage starch prepared by the invention has the advantages of tight molecular shell structure, stable structure, loose interior, no collapse, and adjustable pore size in the molecular network. The molecular cage starch prepared by the invention can adsorb molecules of different sizes, and has simple production process, low production cost, which is only 65% ​​of the production cost of cyclodextrin, and good slow-release performance.

The invention discloses a method for manufacturing a coreless thin substrate, comprising the following steps: a. Laminating first copper foil, first prepreg, and second copper foil sequentially for the first pressing to obtain the first substrate, and Fabricate a second circuit on the second copper foil, the second circuit includes a first pad, and the first pad extends around to form an electroplating frame; b. On the premise that the electroplating frame is exposed, the first pad The second prepreg and the third copper foil are sequentially stacked on the second copper foil and pressed for the second time to obtain the second substrate, and the first circuit and the third circuit are respectively made to obtain the substrate blank; c. The third pressing ; d. Opening the first blind hole and the second blind hole, respectively filling the first blind hole and the second blind hole by using electroplating filling technology to obtain the substrate model. The coreless thin substrate manufactured by the manufacturing method is a three-layer coreless substrate, has symmetrical lamination conditions and lamination structure, and realizes embedding of inner layer circuits.