30results about How to "The process is simple and scientific" patented technology

The invention provides a traditional Chinese medicine for treating vulvar leukoplakia and a preparation method thereof and belongs to the field of traditional Chinese medicine preparation techniques. The traditional Chinese medicine is prepared by using natural Chinese herbal medicines as raw material. The traditional Chinese medicine is characterized by comprising 30g of sophora flavescens, 30g of common cnidium fruit, 30g of rhizoma atractylodis, 20g of belvedere fruit, 20g of folium isatidis, 20g of astragalus membranaceus, 20g of blackberrylily rhizome, 20g of angelica, 20g of salvia miltiorrhiza, and 20g of schizonepeta. The preparation method includes: well mixing the Chinese herbal medicines according to a weight ratio, grinding into powder of 1-100 micrometers and packing with 10g per bag. Application of the traditional Chinese medicine includes: taking 10g to put into a cup, soaking with boiled water for 10 minutes, pouring into a basin, adding 1500ml warm water at 35-40 DEG C, hip bathing for 10-15 minutes, wetting gauze with the medicine for partial hot applying for 10-15 minutes, and slowly rubbing. The traditional Chinese medicine is applied 1-2 times a day for four weeks as a treatment course. Two treatment courses are needed to treat the vulvar leukoplakia. The traditional Chinese medicine for treating vulvar leukoplakia has the functions of clearing heat and itching relieving, promoting blood circulation to remove blood stasis and antisepsis and anti-inflammation; is convenient to prepare and use, lasting in medicine effect, free of side effects; and has rich raw material source, and is ideal therapeutic for treating vulvar leukoplakia.

A commutator with cold-pressed end face is made up of circular copper wire through cutting, cold pressing, cleaning, shaping, turning, milling slot and bending. Its advantages are simple technology, no spark and noise generation, and long service life.

The invention discloses a preparation method of a saxitoxin molecularly-imprinted nano fluorescent material and an application. The preparation method comprises the steps of taking saxitoxin as a template molecule and adding a quantum dot fluorescent nanomaterial; and initializing polymerization in the presence of a cross-linking agent tetraethylortho silicate and a functional monomer 3-aminopropyltriethoxysilane or 3-(tri(trimethsilyl)silyl)propyl methacrylate, and then removing the template molecule in the obtained polymer by adopting an ultrasonic-assisted extraction method to obtain the saxitoxin molecularly-imprinted nano fluorescent material capable of specifically identifying the saxitoxin. The saxitoxin molecularly-imprinted nano fluorescent material can be used for detecting the content of the saxitoxin in a shell sample, and has the advantages of uniform particle sizes, good selectivity and excellent fluorescent stability; and fast and high-sensitivity detection of the saxitoxin in the shell sample can be achieved.

The invention relates to a method for preparing silica sol. The method for preparing the silica sol is characterized by comprising the following steps of (1), using a Bayan obo tailing as a raw material, leaching the Baiyunebo tailing by using an inorganic acid, and filtering an obtained mixture to obtain an acid-leached solution and an acid-leached residue; (2), roasting the acid-leached residue for 2h to 6h in a condition of 500 DEG C to 900 DEG C to obtain roasted ore; (3), under the regulation of a regulating agent, slowly adding the roasted ore into a sodium hydroxide solution with mass concentration of 5 to 15 percent, wherein the mass ratio of the roasted ore to the sodium hydroxide solution is 1: 0.3 to 1: 1, a reaction temperature is 60 DEG C to 100 DEG C, a reaction time is 2h to 8h, and a stirring speed is 20gama / min. The prepared silica sol has the advantages that the raw material is the acid-leached residue obtained by carrying out acid leaching on the Bayan obo tailing; silicon content is high; impurities are less; the prepared silica sol is high in purity; a process is scientific and simple; the cost is low; the recovery rate of silicon is up to 95 percent or above 95 percent; no three wastes are generated in a production procedure; meanwhile, rare earth in the tailing can be recovered. The method for preparing the silica sol is not only applicable to the Bayan obo tailing, is but also applicable for other ore deposits with higher silicon content.

The invention discloses a coating process for a pipeline three-layer structural anticorrosive coating. The coating process comprises the following steps of: 1) performing fusion bonded epoxy (FBE) coating, namely heating a coated substrate, and spraying epoxy powder to the surface of the coated substrate by an electrostatic spraying process to melt an epoxy powder coating and cure the epoxy powder coating into a bottom coating; 2) performing air dielectric (AD) coating, namely coating adhesive powder to the surface of the coated substrate during gelling of the epoxy powder, wherein the surface temperature of the coated substrate is between 170 and 225 DEG C, and the coating thickness is between 80 and 350 mu m; and 3) performing polyolefin coating, namely winding a fabricated polyolefin coil strip on the coated substrate before an adhesive is cooled, wherein the coating thickness is between 0.5 and 4.0mm. By the AD powder coating process, the wound coating is tightly adhered to the substrate, and the anticorrosive coating has high integrity, cathodic disbonding resistance and compactness.

A concentrated jerusalem artichoke juice is prepared from the tuber of jerusalem artichoke through washing, slitting, adding citric acid, water bath at 80-100 deg.C, squeezing to obtain raw juice, using phosphoric acid to regulate pH=2-4, water bath at 75-90 deg.c, using lime milk to regulate pH=11-13, water bath at 50-60 deg.C, using phosphoric acid to regulate pH=6.5-7, filtering, and vacuum concentrating.

The invention discloses a method for separating scandium from bayan obo tailings, which belongs to the field of mineral separation. The method takes the bayan obo tailings are raw materials and comprises the following steps of: grading the raw materials; grinding obtained coarse granular ores, and then returning and grading the ground ores; carrying out size mixing on fine granular ores, then performing low intensity magnetic separation on the fine granular ores to form a closed circuit grinding process; performing floatation on the selected tailings subjected to the low intensity magnetic separation; and then carrying out high intensity magnetic separation on ore pulp of the tailings subjected to the flotation, thus obtaining non-magnetic ores which are the concentrated scandium. According to the method disclosed by the invention, the fractionation and mineral separation method is adopted, the technology is simple and scientific, the concentrated scandium with the content of scandium oxide being more than 420ppm and the recovery rate being more than 65% can be obtained, and other recyclable resources in the bayan obo tailings can be further concentrated when the concentrated scandium is obtained.