32results about How to "Easily intrusive" patented technology

The invention relates to a composite PTA preparation method. The method comprises the following steps: 1) mixing zinc molybdate, cerium oxide, a fluorboric acid aqueous solution, graphene oxide, tin oxide and titanium oxide, and a perchloric acid aqueous solution and grinding a mixture, and then performing a hydro-thermal reaction and steps of filtering, calcining, plasma processing, and organosilicon modification to prepare composite age-proof powder; and 2) mixing acetic acid and water, adding a sodium hexametaphosphate aqueous solution and the composite age-proof powder obtained in the step1), and beating the materials for dispersing to obtain the composite age-proof agent, fusing the composite age-proof agent with crude terephthalic acid slurry, performing crystallization and solid-liquid separating, washing the material, and performing steps of drying, beating, and solid-liquid separating to obtain composite PTA. The prepared product has obvious age proof effect.

The invention relates to a burner (B) for a gas turbine comprising a burner housing (BH) and a pilot combustor (PC) comprising a supply module (SM) providing pilot fuel (F) and pilot air (A) into pilot combustion room (PCR) being enclosed by a pilot combustor housing (PCH) comprising a tapered exit with a throat (THR) of a defined lengths into the resulting main flow direction, said throat (THR) discharging a concentration of radicals (R) and heat (H) generated in said pilot combustion room (PCR) into a main combustion room (MCR) enclosed by said burner housing (BH), wherein a burner axis (CS) is defined by a centre line of said throat (THR) extending in the direction of the resulting main flow through said throat (THR). To improve stability the invention proposes that the interior cross section area of said throat(THR) deviates from a circle by means of flow guiding elements (FGE) provided as protrusions (PRO) with a defined radial hight or as recesses (RCE) with a defined depth extending longitudinally along the direction of the burner axis (CX) to give the discharging flow a defined velocity distribution with regard to a circumferential direction.

The invention relates to a differential p-xylene preparation method. The method comprises the following steps: 1) mixing silver phosphate, bismuth vanadate, rutile titanium dioxide, white carbon blackand a fluosulfonic acid aqueous solution for a hydro-thermal reaction, and performing the steps of grinding, filtering, calcining, washing and drying on a mixture to obtain a special anti-aging agent; 2) employing p-xylene, acetic acid, o-xylene, acetamide and the special anti-aging agent obtained in the step 1); and 3) adding differential p-xylene mother liquor obtained in the step 2) in p-xylene in a spray form to prepare the differential p-xylene. The anti-aging function of a subsequent product prepared by the differential p-xylene can be obviously increased.

The invention relates to a surgical milling cutter which is designed to remove bone and / or cartilage tissue, comprising a shaft (2) which extends along a longitudinal axis, can rotate about same, andcan be releasably connected to a drive device and which has a proximal end that can be rotationally fixed to a drive unit and a distal end lying opposite the proximal end. A milling surface (4.1) which circumferentially surrounds the shaft (2) and extends on the distal end along the longitudinal axis of the shaft (2) is formed at the distal end, said milling surface protruding radially from the shaft and having a milling surface maximum radius R1. The aim of the invention is to prevent unwanted damage to delicate body structures. This is achieved by an atraumatic design in that a protective assembly is provided on the distal end. The protective assembly has a distal support surface and a protective assembly maximum radius R2 in order to form a protective ring (4.2) which surrounds the milling surface maximum radius R1 in a circular manner.

The invention discloses a welding method for welding a polycrystalline diamond compact (PDC) and a tungsten carbide matrix by using a silver solder. The welding method comprises the following steps of: a. forming a hole with an internal diameter size larger than an external diameter size of the PDC on the tungsten carbide matrix; b. before welding, cleaning the PDC and the welding surface of the tungsten carbide matrix by using anhydrous ethanol with the volume concentration of 99.7%; c. smearing a silver brazing flux on the welding surface of the tungsten carbide matrix, heating the tungsten carbide matrix to 640-680 DEG C; putting the PDC in a crucible and adding the silver brazing flux, and heating to 640-680 DEG C; and d. adding the silver solder and the silver brazing flux between the welding surface of the tungsten carbide matrix and a substrate of the treated PDC, and heating the silver solder by oxygen-acetylene flame. The method has the advantages that the process is simple, the welding quality is improved, the compact shedding phenomenon caused by instable welding is avoided, the life of a PDC bit is prolonged, and the overall performance is improved.

Coke layers and ore layers are formed in the blast furnace. The coke layer is formed of coke oven coke, and the ore layer is formed of iron coke, coke oven coke and ore. The mixing ratio of coke oven coke to the ore in the ore layer is 0.5% by mass or more. The stagnation of the gasification reaction of iron coke in the clad layer can be suppressed.

During mushroom planting production, except for the demand for sufficient nutritional substances on a culture medium, mushroom sticks are required to have forming strength, air permeability, easy hypha invasion and the like. A mushroom culture medium comprises 70% or above of hard materials including cottonseed hull, oak chips, sawn timber chips and the like, which are compact in texture. The contents of such nutritional substances as cellulose protein and the like in the culture medium are high, and the produced mushroom is good in quality. In order to guarantee the air permeability, large-particle mixtures are generally used, and as the hard particles with compact textures lead to difficult core invasion of hyphae, the utilization ratio of raw materials is low. Explosion puffing equipment is utilized to perform puffing treatment on the hard culture medium to enable tissues to become loose and porous, so that large particles of the raw materials are maintained to guarantee the air permeability, the hyphae can easily invade the cores of the particles, and accordingly, the utilization ratio of the raw materials is improved. As cellulose substances are degraded, time for edible mushrooms to degrade the cellulose substances through self-metabolism is shortened, and carbon sources required for growth of the edible mushrooms are increased. Protein in the culture medium is subjected to denaturation, and part of protein is degraded into free amino acids, so that the edible mushroom culture medium is richer in nutrition, absorption and growth of the edible mushrooms are facilitated, particularly, in the early growth stage of the hyphae, owing to rich nutrition, the hyphae grow to be thick, accordingly, the mushroom quality is improved, the mushroom yield is increased, the production time is shortened, and economic benefits are improved.

The invention discloses a preparation method of biodegradable regenerated polyester staple fibers, which is characterized by comprising the steps of drying spinning materials by a vacuum drum, mixing with biodegradable master batch dried by a master batch drying system at the feed inlet of a screw extruder; preparing primary fibers after mixing and fusing by the screw extruder and extruding by a spinneret plate; cooling primary fibers by an annular blowing device; successively carrying out winding, falling, bundling and time balancing on the primary fibers in a constant temperature and constant-humidity room; stretching the primary fibers in oil bath and stream respectively; performing curling, relaxation heat setting, cutting and packaging to obtain biodegradable regenerated polyester staple fibers, wherein physical properties and mechanical properties of the biodegradable regenerated polyester staple fibers produced by the method do not change, and therefore, the subsequent processing and usage are not influenced; after being used, the fibers can be decomposed into inert humus, carbon dioxide and water in a microorganism-enriching environments such as refuse landfill or composting site, thereby returning to nature and achieving real biodegradation.

The invention relates to a method for preparing composite modified p-xylene. The method comprises the following steps: 1) mixing aluminium hexafluorosilicate, phosphorus chlorate chromium, nickel oxide, a calcium phosphate whisker and trifluoroacetic acid aqueous solution, and a phosphofluoric acid aqueous solution, grinding a mixture and performing a hydro-thermal reaction, and performing steps of filtering, calcining, washing and drying to prepare a special-purpose antibacterial modifier; 2) mixing p-xylene, o-xylene, an acetamide cosolvent and the special-purpose antibacterial modifier obtained in the step 1), chromium aluminum phosphate, and white carbon black, dispersing the mixture, and filtering the mixture to prepare the composite modified p-xylene mother liquor; and 3) adding thecomposite modified p-xylene mother liquor obtained in the step 2) in p-xylene in a spray form to prepare the composite modified p-xylene. The composite modified p-xylene has excellent antibiosis function.

Provided is a preparation method for differentiated EG. The method comprises the following steps that oxalic acid solution, hypochloric acid solution, pucherite, graphene oxide, zinc oxide, titanium dioxide top grade and hydrotalcite are mixed to be grinded after hydrothermal reaction is carried out, and filtration, calcination, washing and drying are carried out to prepare a special age resisterfor EG; ethylene glycol, propylene glycol, glycerinum, lactic acid, the obtained special age resister for EG, silicon dioxide, mica powder and potassium hydrogen phosphate dispersion liquid are mixedand grinded, then dispersion and filtration are carried out to prepare differentiated EG mother liquor with a function of ageing resistance; the obtained differentiated EG mother liquor is sprayed into the EG to prepare the differentiated EG fused deeply with the function of ageing resistance. The preparation method for the differentiated EG has the advantage that the differentiated EG prepared bythe above method has the good function of ageing resistance.

The invention provides a method for updating a deteriorated grassland bluegrass lawn at low cost in the north. Weed control, pruning height control, lawn partition area and turf block size determination, rooting hastening with grass blocks soaked in pesticide, determination of the number of turf blocks planted in a community per square meter and planting positions, compacting, watering, sand covering, growth regulator application and other technologies are applied, on the basis of the natural rules of plant interspecific competition and the survival of the fittest, zoysia japonica can easily invade the deteriorated grassland bluegrass lawn due to strong creeping stems and the strong growing vigor and competitiveness, other grass seeds can hardly invade the lawn once the population of the zoysia japonica is formed, and therefore the aim of updating the deteriorated grassland bluegrass lawn at low cost is achieved. The effective method can be applied to the production practice of landscaping in a large area, can solve the problem of a deteriorated cool-season lawn, and can lower updating cost.

The invention discloses the application of long-chain non-coding RNA lnc-HCAR in preparing a bone repair system based on endochondral osteogenesis, the nucleotide sequence of the lnc-HCAR is shown in SEQ ID NO.1, and the lnc ‑HCAR can promote the expression of Vegfa gene and Mmp13 gene, and can competitively bind miR‑15b‑5p, thereby promoting hypertrophic differentiation of chondrocytes, promoting blood vessel formation in endochondral osteogenesis, and promoting matrix in endochondral osteogenesis remodel. The bone repair system based on long non-coding RNA lnc-HCAR includes lnc-HCAR, gene delivery system, mesenchymal stem cells and porous bone scaffold materials. The invention has good application prospects in tissue engineering bone construction and bone defect repair.

The invention belongs to the field of ornamental plant transgenic technology, particularly relates to a method for culturing transgenic dianthus and more particularly discloses a method for culturing transgenic dianthus by taking agrobacterium-mediated embryogenic callus of the dianthus as a material. The method comprises the following steps of embryogenic callus induction, genetic transformation, screening and regeneration, GUS (glucuronidase) coloration detection and PCR (polymerase chain reaction) detection. The method is characterized in that the GUS report gene and the ACO target gene are introduced into the receptor which is the embryogenic callus of the ianthus through agrobacterium mediation, different factors affecting the embryogenic callus transformation are screened, kanamycin or hygromycin is used as a screening agent to screen the transformed embryogenic callus, and the screening is carried out through GUS coloration, PCR detection and other auxiliary methods to obtain the transgenic dianthus. The invention provides a novel technology platform for the innovation of the germplasm resources for the genetic transformation of the dianthus.

The invention provides a preparation method for differentiated pure terephthalic acid (PTA). The method comprises the following steps: (1) mixing bismuth molybdate, graphene oxide, a hypochlorous acidaqueous solution, zinc oxide, white carbon black, potassium titanate crystal whiskers and a hydrofluoric acid aqueous solution, performing grinding, performing a hydrothermal reaction, performing filtration, performing calcination, performing plasma treatment, and performing organic-silicone modification to obtain a special anti-aging agent; and (2) mixing acetic acid and water, then adding sodium hexametaphosphate aqueous solution, nickel fluoroborate, calcium tungstate and the special anti-aging agent obtained in the step (1), performing beating dispersion to obtain a special modifying liquid, fusing the special modifying liquid and crude terephthalic acid slurry, performing crystallization, performing solid-liquid separation, performing washing, performing drying, performing beating, performing solid-liquid separation, and performing hydrofining to prepare the differentiated PTA. According to the preparation method provided by the invention, the product prepared by the method has asignificant anti-aging effect.