53results about How to "Many holes" patented technology

The invention discloses a tunnel advance geology forecast method based on blast hole drilling information. The method comprises the following steps of A, establishing a standard database [Ki] of drillability indexes before the implementation of forecast; and B, implementing advance geology forecast by the following specific steps of: (1) numbering advance blast holes on a tunnel face; (2) recording acquired drilling rate v, drilling pressure p, drilling rod rotating speed w, rock slag, return water amount and return water color one by one; (3) calculating the drillability index K of each group of parameters according to a drillability index formula (7); (4) comparing the calculated drillability index k with [Ki], if K belongs to (min[Ki], max[Ki]), the basic surrounding rock grade of a drilling segment is grade i; (5) comprehensively judging the surrounding rock grade in combination with rock slag ingredients, water return condition and the surrounding rock condition of the tunnel face according to a table 2; (6) comparing and verifying in combination with a forecasted surrounding rock grade and a practical surrounding rock grade determined after tunnel excavation; and (7) expanding corrected data into [Ki]. The method is convenient to operate, is low in cost, is accurate and efficient, and can be used for performing real-time advance geology forecast.

The invention discloses an olecroanon locking proximal humerus plate, which is an integrated plate with a head part and a body part, wherein the head part comprises a face part and a vertex part, and the face part and the vertex part are bended into an angle of 104-115 degrees; the head part is provided with a group of locking holes; the body part is provided with a group of locking holes and pressurizing holes; an angle of inclination of the lower section and the upper section of the body part is 5-9 degrees; the vertex part of the head part is provided with a first locking hole and a second locking hole; a nape is arranged between the first locking hole and the second locking hole; the face part of the head part is provided with a group of thread locking holes and a group of small holes for temporary fixing; and the tail end of the body part is provided with 1-3 holes for temporary fixing. The locking plate can treat olecranal fracture and at the same time complicate fracture shaft ulna, has good olecroanon attach performance with human body, no need of shaping during clinical practice, is convenient for operation, has good stability, and can improve the treatment effect.

The invention relates to a porous superfine denier polyester pre-oriented yarn and a preparation method of the porous superfine denier polyester pre-oriented yarn. Terephthalic acid and ethylene glycol are adopted to be used as raw materials of polyester, and the existing production equipment of pre-oriented yarn (POY) is adopted. The main technological parameter of the porous superfine denier polyester pre-oriented yarn is: the diameter of spinneret plate microporous is 0.10-0.15 millimeter, the height of a slow cooling area is 80-150 millimeters, and the slow cooling area is combined with ring windchill; two nozzle oiling systems and reasonable winding tension and speed are adopted, the porous superfine denier polyester pre-oriented yarn which is 44-55 dtex / 192f is obtained, and the filament number of the porous superfine denier polyester pre-oriented yarn is 0.23-0.29 dtex. The porous superfine denier polyester pre-oriented yarn has the advantages of being plural in pore number, small in filament number, low in absolute intensity, small in bending rigidity, large in specific surface area and voidage, soft, light in weight and the like. Moreover, the porous superfine denier polyester pre-oriented yarn further has the advantages that filament aggregation has a good capillary core absorption effect and a better ventilation wet guiding function, added value is high, quality is good, production cost is low, the advantage of cost performance is obvious and application prospect is broad.

The invention discloses a zero-dimensional black phosphorus quantum dot/one-dimensional tubular carbon nitride composite photocatalyst and a preparation method thereof. The preparation method comprises the following steps: mixing one-dimensional tubular carbon nitride with a zero-dimensional black phosphorus quantum dot solution, and performing vacuum drying to obtain the zero-dimensional black phosphorus quantum dot/one-dimensional tubular carbon nitride composite photocatalyst. The composite photocatalyst disclosed by the invention has the advantages of strong light absorption capability, strong photo-generated carrier separation and migration capability, high photocatalytic activity, good stability and the like, can be widely used for catalytic reduction of heavy metal pollutants and degradation of organic pollutants, can effectively remove heavy metal pollutants and organic pollutants from mediums, and has very high use value and a promising application prospect. The preparation method disclosed by the invention has the advantages of simple process, convenience in operation, low cost, no secondary pollution to the environment and the like, is suitable for large-scale preparation and is beneficial to industrial application.

The invention provides a burning free type porous compound zeolite filter material. Natural zeolite activated at a high temperature, a bonding agent and a pore forming agent are used as raw materials, and evenly mixed according to a certain ratio, and sprayed with water to form a sphere, during curing, proper temperature, humidity and curing time are kept, and then the burning free type porous compound zeolite filter material is obtained. The surface of the burning free type porous compound zeolite filter material is rough and porous, thereby facilitating the attached growth of microbes in a biological filter, and the filter material has excellent adsorptivity and regenerability, and when being used as a filling material in an aeration biological filter to treat sewage, the filter material can achieve extremely good treating effect. The burning free type porous compound zeolite filter material and the method for preparing the same provided by the invention have the advantages of unnecessary sintering process and no consumption of energy such as coal, electricity and the like, and meet the present national policy on environmental protection of saving energy and reducing emission.

The invention provides a method for making a small-bore intravascular stent through supercritical gas. The method comprises a filling limiting stage, an intermittent foaming stage and a post-processing stage, wherein the filling limiting stage comprises the following operations: placing a to-be-processed tubular material into an outer mould which has a limiting effect, and filling and compacting aspace between the tubular material and the outer mould by solid particles I; filling and compacting a cavity in the middle of the tubular material by solid particles II, or adding an inner mould which has a limiting effect in the cavity, and filling and compacting a space between the tubular material and the inner mould by the solid particles II; the intermittent foaming stage includes a polymergas saturating stage and a rapid depressurizing cooling stage, wherein supercritical carbon dioxide is taken as a foaming agent; and the post-processing stage comprises an operation of separating thefoamed tubular material from the mould, so that the intravascular stent is obtained. Different from other means, the stent provided by the invention is designed with many uniform pores in the surface;and in addition, problems of post-processing can be also solved.

A nitride semiconductor structure and a semiconductor light emitting device are revealed. The semiconductor light emitting device includes a substrate disposed with a first type doped semiconductor layer and a second type doped semiconductor layer. A light emitting layer is disposed between the first type doped semiconductor layer and the second type doped semiconductor layer. The second type doped semiconductor layer is doped with a second type dopant at a concentration larger than 5×10¹⁹ cm⁻³ while a thickness of the second type doped semiconductor layer is smaller than 30 nm. Thereby the semiconductor light emitting device provides a better light emitting efficiency.

The invention belongs to the technical field of flue gas denitration, and relates to a small-aperture corrugated catalyst for gas denitration, and a preparation method thereof. The catalyst adopts a glass fiber mat as a skeleton base material, one or two of titanyl sulfate and silicon oxide as a carrier, one or two of ammonium heptamolybdate and cerium salt as an assistant and one or more of a manganese salt, an iron salt and a chromium salt as an active component precursor and deionized water; and the catalyst comprises, by weight, 90 parts of the carrier, 1.6-6.5 parts of an active componentprecursor, 3.8-5.1 parts of the assistant and 120-200 parts of deionized water. The catalyst adopts the titanyl sulfate and silicon oxide as the carrier, so that the catalyst is ensured to have goodthermal stability at a high temperature, and crystal form change and sintering are avoided; the manganese salt, the iron salt and the chromium salt are used as active components, so hole blockage caused by high solution viscosity can be avoided; and the ammonium heptamolybdate and the cerium salt are used as modification aids, so that the catalyst has an extremely high catalytic performance in anSCR reaction.

The invention discloses a production process of a metal oxide supported boron-silicon-containing phenolic resin-based active carbon tail gas desulfurizer for producing hydrogen fluoride. The production process comprises the following steps: firstly introducing boron and silicon atoms into a phenolic resin framework for effectively improving the heat resistance and oxidation resistance of the phenolic resin, then carrying out carbonization to obtain boron-silicon-containing phenolic resin carbon, and then activating the boron-silicon-containing phenolic resin carbon to finally obtain the metaloxide supported boron-silicon-containing phenolic resin-based active carbon tail gas desulfurizer. The production process provided by the invention has the following beneficial effects that (1) the desulfurization efficiency is high; (2) the number of holes in the desulfurizer is large; and (3) the desulfurizer can be recycled and reused.

The invention discloses a porous filtration film. The porous filtration film comprises the following raw materials in parts by weight: 20-40 parts of polyvinyl chloride, 15-30 parts of vinyl acetate, 5-10 parts of porous fibers, 10-30 parts of an organic solvent, 1-5 parts of a heat stabilizer and 1-3 parts of a surfactant. A preparation method of the porous filtration film comprises the following steps: adding the polyvinyl chloride, the vinyl acetate and the porous fibers into the organic solvent according to the parts by weight, simultaneously and uniformly mixing, stirring, adding the heat stabilizer and the surfactant, continuously stirring so as to obtain a spraying film slurry solution, and coagulating the spraying film to obtain a finished product. The preparation method of the porous filtration film is simple in process and convenient to operate; and the prepared porous filtration film is small in aperture, large in number and high in filtration efficiency.

The invention provides a manufacturing method of porous tasty bean curd based on microwave pretreatment, comprising the following steps: (1) washing fresh soybeans and draining, adding distilled waterwhich is 6 times the weight of the soybeans, carrying out microwave treatment at the power of 200 W in a microwave oven for 3 min, taking the materials out of the microwave oven and cooling to room temperature to obtain pretreated soybeans; (2) immersing the pretreated soybeans in water until there is a planar concave in the center of the bean cotyledon, and taking out to obtain waterishlogged soybeans; (3) adding water to the waterishlogged soybeans and jordaning to obtain uncooked soya-bean milk, boiling the uncooked soya-bean milk for 1-3 min to obtain cooked soya-bean milk, immediately adding water and cooling to 63-67 DEG C within 10-15 seconds so as to obtain a serous fluid; (4) adding a coagulating agent into the serous fluid, carrying out thermal insulation for 10 min, and takingout to obtain bean curd pulp, and discharging water from the bean curd pulp through a flip self-pressing mode to obtain a semi-finished product; and (5) adding the semi-finished product into boiled cooking liquor and waiting for 3-5 min to obtain the porous tasty bean curd. The prepared bean curd has uniform aperture, good local flavor, and excellent yield and elasticity.

The invention relates to the technical field of environmental protection equipment, and discloses an anti-backflow perforated aerator, which comprises an air inlet pipe, a clamping device, an oxygen supply aeration diaphragm, an anti-backflow rubber diaphragm, a locking ring and a pressing cover, wherein the oxygen supply aeration diaphragm is in a circular ring shape, oxygen supply aeration holes are formed in the ring surface of the oxygen supply aeration diaphragm at equal intervals, a boss is arranged at the bottom of the air inlet pipe, the inner ring of the oxygen supply aeration diaphragm is clamped between the clamping device and the boss, the anti-backflow rubber diaphragm is arranged below the oxygen supply aeration diaphragm and is provided with a groove matched with the boss, and the outer ring of the oxygen supply aeration diaphragm and the outer ring of the anti-backflow rubber diaphragm abut against each other and are fixedly clamped between the locking ring and the pressing cover. According to the invention, the oxygen supply function and the stirring function can work independently and can also work cooperatively, and the oxygen supply power efficiency and stability are greatly improved.