38results about How to "Well through" patented technology

According to one embodiment of the present invention, a terahertz wave concentrating module can comprise: a first lens for changing a terahertz wave, which is emitted while a terahertz Bessel beam penetrates an object to be inspected, so as to have a small angle; and a second lens for concentrating, on a detector, the terahertz wave having passed through the first lens.

The invention discloses a preparation method of a self-assembled composite nanofiltration membrane for water softening. According to the method, polyethyleneimine is taken as a polyelectrolyte cation layer, and polydopamine is taken as a polyelectrolyte anion layer; by relying on the electrostatic interaction between opposite charges and the strong adhesion property of the polydopamine, a layer-by-layer self-assembly technology is used for preparing the (polyethyleneimine / polydopamine / polyethyleneimine) / polyethersulfone composite nanofiltration membrane on a polyethersulfone ultrafiltration membrane by means of alternate deposition. The composite nanofiltration membrane provided by the invention is only provided with one polyelectrolyte double-layer and one active layer; the preparation method is simple to operate, the prepared membrane is controllable in thickness and good in stability, and preparation cost is lower. The pure water permeability coefficient of the composite nanofiltration membrane is 7.15L / m<2>.h.Mpa, and the molecular weight cut-off of the composite nanofiltration membrane is 480Da, so that the composite nanofiltration membrane belongs to the category of nanofiltration membranes. The maximum retention rates of the composite nanofiltration membrane for Mg<2+> and SO4<2-> in water reach up to 97.5%, but the retention rates of the composite nanofiltration membrane for Na<+>, K<+> and Cl<-> are only about 36.2%, so that the composite nanofiltration membrane can effectively achieve the retention of Mg<2 +> and SO4<2-> ions in the water, and accordingly has better application prospect in the aspect of water softening.

The invention discloses the preparation and application of flavonol as a brain targeting synergist. The inventors have found in long-term experimental research that some flavonol compounds, especially kaempferol, rutin, troxerutin, myricetin, hesperidin, and their hydroxy derivatives, especially their glycosides, esters, ethers Derivatives, can be very good to promote the therapeutic drug molecules ginsenoside, stilbene glycoside, resveratrol, levodopa, edaravone, vinpocetine, nicergoline, cytosine When choline, oxiracetam, etc. enter the brain tissue, the concentration of the drug in the brain tissue is greatly increased without increasing its blood concentration, and the curative effect of the drug is effectively improved.

The invention relates to the technical field of cellulose plates, in particular to a scented cellulose and a method for preparing a single-color plate using the scented cellulose. The scented cellulose consists of the following raw materials in parts by weight: 80-120 parts by weight of cellulose acetate, plasticizer 20~40 parts, 0.01~0.1 parts of fragrance agent and 0~1 part of pigment powder. A method for preparing a single-color plate using the above-mentioned scented cellulose, comprising the following steps: A, adding the above-mentioned cellulose acetate and plasticizer in the blender, stirring at room temperature for 18-30 hours at a speed of 60-100 r / min, Obtain the mixture; B, put the above mixture into a twin-screw extruder, melt and extrude it, cool it to 30~40°C, and cut it into pellets to obtain the rubber material; C, put the above rubber material and the above weight parts of flavoring agent and pigment powder into The single-screw extruder is melted and extruded to obtain a single-color plate of flavored cellulose. The scented cellulose monochromatic plate prepared by the invention has strong scent persistence.

The invention relates to a method for cleaning a circumferential surface of a cylinder of a printing press. The method can realize improved cleaning t during a short time. In order to clean the circumThe invention relates to a method for cleaning a circumferential surface of a cylinder of a printing press. The method can realize improved cleaning t during a short time. In order to clean the circumferential surface, a cleaning fluid is first applied to the circumferential surface (15). In order then to remove contaminants (17), the contaminants (17) are broken up mechanically after the cleaningferential surface, a cleaning fluid is first applied to the circumferential surface (15). In order then to remove contaminants (17), the contaminants (17) are broken up mechanically after the cleaning fluid is applied and before a cleaning apparatus (6) acting on the circumferential surface (15) is set into operation.fluid is applied and before a cleaning apparatus (6) acting on the circumferential surface (15) is set into operation.