78results about How to "Difficult to penetrate" patented technology

A Fe-matched matter-halogen electrochemical system used on liquid flow energy storage is prepared as separating positive/negative electrode electrolyte by positive ion exchange film and storing said electrolyte in external container, generating charge/discharge process by making oxidation/reduction reaction on inert carbon felt electrode through pump stream via battery, applying soluble Fe(III)/Fe(II) -matched matter oxidation/reduction electric pair as negative electrode and applying halogen oxidation/reduction electric pair as positive electrode.

The invention provides a preparation method of a nano carrier for tumor photo-dynamics therapy (PDT). According to the preparation method, Fe<3+> salts are dissolved in DMF, then a photo-sensitizer (TCPP) is added to obtain particles (NMOFs); then the particles are dispersed in water under the assistance of ultrasonic waves; crosslinking agents (EDC and NHS) are added; after the reactions betweenBSA and sulfadiazine (SDs) finish completely, dialysis is performed to obtain particles (NMOFs@BSA/SDs); then the particles are dispersed in distilled water, then Mn<2+> salts are added, the pH is adjusted, and finally dialysis is performed to obtain a carrier (NMOFs@BSA/SDs@MnO2). Nano metal organic framework particles are taken as the basis and coated by protein (BSA) and sulfadiazine (SDs); finally the particles are in-situ mineralized to obtain required particles; SDs can specifically recognize carbonic anhydrase of tumors and is capable of actively targeting the oxygen-deficient parts oftumors; MnO2 generated in mineralization can catalyze the H2O2 decomposition to increase the oxygen content of tumors; and the PDT efficiency is improved.

The invention provides application of water-soluble silicon quantum dots as drug carriers. A preparation method of a silicon quantum dot-drug molecule composition comprises the following concrete steps: preparing aminated silicon quantum dots, performing maleimide treatment on the surfaces of the aminated silicon quantum dots, and preparing the silicon quantum dot-drug molecule composition. According to the method, the silicon quantum dots are connected with drug molecules through short-chain polyethylene glycol molecules, and the prepared silicon quantum dot-drug molecule composition has the advantages of high purity, good water solubility, protein adsorption resistance, no additional fluorescent mark, capability of achieving passive targeting in the body, capability of entering urine through the blood-brain barrier and the glomerular vascular wall to be discharged from the body, a certain drug slow-release effect and the like.

The invention discloses a human epidermal growth factor nanoliposome, which contains liposome microcapsules and human epidermal growth factor wrapped in the liposome microcapsules, wherein the mass ratio of the human epidermal growth factor to the liposome microcapsules ranges from 1: 50 to 1: 200. The invention also discloses a method for preparing the human epidermal growth factor nanoliposome. Phosphatide and cholesterol are adopted as the main membrane materials, whose biomembrane-like structures are similar to the skin structure and have good transdermal permeability, and are easier to prepare a lipid carrier with a uniform particles size and high entrapment rate by a preparation technology. According to the invention, human epidermal growth factor (hEGF) is prepared into the nanoliposome. As a raw material, the nanoliposome supplemented by other biologically-active substances such as hyaluronic acid is prepared by a corresponding preparation technology into aqua, cream and emulsion skin care products, so as to rapidly repair damaged skin, repair and remove wrinkles, nurse after sunscreen and radiation examination, nurse sensitive skin, and remove and repair various scars.

The invention discloses a concrete pipe and a manufacturing process thereof. According to the technical scheme, the concrete pipe comprises a pipe body, and a socket end and a spigot end are arrangedon the pipe body. The pipe body is composed of a reinforcing steel bar keel and a concrete layer covering the reinforcing steel bar keel. The peripheral face of the spigot end of the pipe body is fixedly connected with a water stopping pipe. The concrete pipe and the manufacturing process thereof have the advantage of improving the waterproof performance of an inserting opening of the concrete pipe.

The invention discloses a back side dampproof and impervious structure of an indoor wall of a building. The structure is composed of a base material layer, a dampproof surface layer and a decoration surface layer. The base material layer is a concrete base face or a cement mortar screeding layer. The decoration surface layer is coatings or wallpaper or wall cloth or a decoration panel or tile stone and the like. The dampproof surface layer is made of one or more layers of inorganic scale water-borne epoxy resin coatings. The inorganic scale water-borne epoxy resin coatings are composed of first components and second components, and the first components are epoxy resin dispersoid and comprise, by weight, 60 percent to 80 percent of bisphenol low molecular weight liquid epoxy resin, five percent to ten percent of reactive diluents, 0.2 percent to 1.0 percent of dispersing agents A, 0.05 percent to 0.1 percent of antifoaming agents A, 0.2 percent to 0.8 percent of non-ionic surface active agents, 0.1 percent to 0.2 percent of sinking preventing agents, eight percent to 40 percent of physical face packing and five percent to 20 percent of inorganic scale materials. The second components are hydrophilic waterborne curing agent dispersoid and comprise, by weight, 43 percent to 65 percent of modified aqueous amine curing agents, 34 percent to 60 percent of water, 0.2 percent to 0.4 percent of dispersing agents B, 0.2 percent to 0.5 percent of antifoaming agents B and 0.2 percent to 0.8 percent of flatting agents.

The invention provides a method for preparing a distillation film with a support body. The method comprises the following steps: conducting vacuum drying on PVDF powder; mixing the dried PVDF powder with an additive; stirring for dissolving, so as obtain a transparent uniform casting solution; allowing the casting solution to stand still or putting the casting solution in a vacuum drying box for bubble removing; pouring the non-bubble casting solution on a clean glass plate attached with a polyester screen mesh; fast distributing the non-bubble casting solution to be uniform with a scraper; allowing a nascent film to stand still in the air; immersing the nascent film together with the glass plate into deionized water of which the temperature is constant for 10 min; removing the glass plate; putting the immersed film into a great amount of deionized water; replacing the deionized water frequently; carrying out preservation for at least 3 days. The film prepared according to the method is high in mechanical strength, flux and interception rate, and low in cost.

The invention discloses a papermaking technology which comprises the following steps: preparing a starch-filler composite system: respectively preparing starch water suspension and papermaking filler water suspension, mixing the starch water suspension, the papermaking filler water suspension and a crosslinking agent to obtain a mixture system, wherein the absolute ratio of starch to filler is (1: 210)-(1: 1,000); gelatinizing and crosslnking the starch in the mixture system to form the starch-filler composite system; supplying paper pulp, mixing the starch-filler composite system and the paper pulp, and making paper through the paper pulp. The invention also provides paper manufactured by the technology. Compared with the starch-filler composite system with non-modified filler, the starch-filler composite system with the modified filler has a large particle size, the filler particles have low probability of penetrating a forming net and can be retained; furthermore, the crosslinked starch of the composite system can generate hydrogen bonding reaction with pulp fibers to enable the filler to be stuck to the fibers, so that the retention rate of the filler on the paper can be greatly improved.

The invention relates to a roach bait, and belongs to the technical field of pesticides. The roach bait consists of the following raw materials in percentage by weight: 0.2 to 0.6 percent of ivermectin, 79 to 85 percent of gelatinized flour, 14 to 20 percent of sugar, 0.2 to 0.5 percent of gelatinized sesame powder, 0.2 to 0.5 percent of milk powder and 0.02 to 0.2 percent of fumaric acid. The ivermectin in the roach bait is taken as an effective pesticidal composition, and mainly has the function of increasing the release of inhibitory neurotransmitter gamma aminobutyric acid (GABA) of polypide so as to prevent the transmission of neural signals, make muscle cells lose contractility and make the polypide dead. However, the peripheral neurotransmitter of mammals is acetylcholine and cannot be influenced by the ivermectin, and the ivermectin is difficult to permeate through hemato encephalic barrier, so that the ivermectin has high safety coefficient. The gelatinized four, the sugar, the gelatinized sesame powder and the milk powder form a phagostimulant; and the fumaric acid is taken as an antiseptic so as to improve the effective period of products. The roach bait has the advantages of good palatability, strong attractive effect, high efficiency and low toxicity, convenient application, low dosage, environmental protection, and the like.

The invention provides a preparation method of a low-cost paper environment-friendly take-out meal box, and relates to the field of meal box materials, and the preparation method comprises the following steps: preparing wheat straw fibers; preparing ramie fibers; preparing hard cloth; adding waste corrugated paper into a crusher; crushing for 30-50 minutes at the speed of 2,000-2,500 r/min to obtain corrugated paper powder; soaking the corrugated paper powder in water for 25-30 hours; adding rice straw powder, calcium carbonate and starch; mechanically stirring at 1200-1500r/min for 2-5h, andadjusting the pH value of the system to 10 by using a sodium hydroxide solution to obtain thick slurry; heating and raising the temperature to 40 to 50 DEG C; soaking the hard cloth for 5 to 10min andthen fishing out the hard cloth; drying at the temperature of 70-80 DEG C to obtain sheets, taking a plurality of sheets for hot press molding to obtain a meal box body, adhering a layer of high-temperature-resistant film to the inner surface of the meal box body, and heating and curing at the temperature of 50-60 DEG C. According to the paper environment-friendly take-out meal box, the excellent mechanical property, heat resistance and water resistance of the meal box can be guaranteed while the low cost is guaranteed.

The invention provides a liquid crystal display panel and a preparation method thereof. The preparation method of the liquid crystal display panel comprises the steps: a first substrate is provided, asilicon nitride film is prepared on the first substrate, a shading layer is formed on the side edge of the first substrate through a yellow light process, and frame sealing glue is prepared on the shading layer; a second substrate is provided, and liquid crystal molecules are instilled on the second substrate; and then the first substrate and the second substrate are arranged in an aligned mode.The shading layer is prepared by replacing a black matrix with silicon nitride, so that the shading effect of the shading layer of the liquid crystal display panel is improved.

The invention discloses a dye absorption laundry bag which comprises a laundry bag body formed by dye absorption non-woven fabric. A draw string or a zipper is arranged at an opening of the laundry bag body. The dye absorption non-woven fabric comprises a non-woven fabric layer, a dye absorption layer and a color protection layer, wherein the dye absorption layer is coated on the non-woven fabric layer, the color protection layer is coated on the dye absorption layer, and the non-woven fabric layer is the outmost layer of the laundry bag body. The dye absorption laundry bag can be effectively prevent decoloring, color crossing and full deformation in clothes washing and is convenient and easy to use.