46results about How to "Change complexity" patented technology

Systems and methods for medical interventional procedures, including approaches to valve implant. In one aspect, the methods and systems involve a modular approach to treatment.

The invention discloses a lightweight flame retardant and foamy filling material of cement doors and manufacturing method thereof, comprising magnesium oxide, magnesium sulphate, fly ash, high alumina refractory cement, calcium chloride, water proofing agent, water reducing agent and foaming agent, with bulk density ranging between 200 kg/m³ and 500kg/m³; the ingredients are formulated by weight at a rate of: magnesium oxide (40 percent -55 percent), magnesium sulfate (15 percent-40 percent), fly ash (5 percent-20 percent), high alumina refractory cement (5 percent-20 percent), calcium chloride (2 percent-6 percent), water proofing agent (2 percent5 percent), water reducing agent (0.2 percent1.5 percent) and foaming agent (0.1 percent-0.5 percent). With the technical solution, the product has the advantages of high strength, light weight, flame retardancy, sound insulation, weather resistance, thermal resistance, energy efficient, freedom from toxicity, harm and irradiation, low manufacturing cost, simple process, etc, which can be widely employed for fire/theft proof metal interior door, building material and like sectors.

The invention is applicable for the field of a silicon solar cell, and provides a positive conductive silver paste of a silicon solar cell and a preparation method of the positive conductive silver paste. The positive conductive silver paste of the silicon solar cell comprises silver powder, a glass filler and an organic carrier and also comprises rod-like nanometer silver threads and inorganic salt compound crystals, wherein the glass filler is a modified TeO2-Bi2O3-PbO glass filler, the silver powder is micro/submicro silver powder, and based on 100% of total weight of the positive conductive silver paste of the silicon solar cell, the constituents in percent by weight are as follows: 60-90% of micro/submicro silver powder, 0.1-10% of rod-like nanometer silver threads, 0.1-10% of modified TeO2-Bi2O3-PbO glass filler, 0.1-10% of inorganic salt compound crystals and 5-20% of organic carrier. By the positive conductive silver paste of the silicon solar cell, the contact resistance of the silver paste and a cell piece is reduced, and meanwhile, the photoelectric conversion efficiency and the peel strength of the silicon solar cell piece are effectively improved.

The invention relates to a fruit and vegetable preservative and a preparation method thereof, and belongs to the technical field of food storage. The preservative comprises the following components in parts by weight: rosin 100-120, maleic anhydride 13-17, polyethylene glycol 0.25-0.35, pentaerythritol 10-12, bisin 0.02-0.05, clove 2-4, licorice 1-3, orange peel 3-5, nutmeg 1-2, fennel essential oil 0.1-0.2, rutin 0.15-0.2, 3,4-methylendioxyphenol 0.5-1, and water 20-30. The fruit and vegetable preservative has good preservation effect and is safe, and meanwhile the prepared edible resin replaces a refine bleached glue which is used as the raw material in the prior art to prepare the fruit and vegetable preservative, so that the complexity of the prior production process of the refine bleached glue is changed, the production cost of the preparation method is reduced, the production flow is simplified, the energy source is saved, and the fruit and vegetable preservative is more environmentally friendly.

The invention discloses a blind hole thread machining control method and device, a processor and a storage medium which are used for performing thread milling on single-aperture blind holes at multiple positions. The control method comprises the steps of drawing thread machining point positions respectively corresponding to multiple blind holes in graphical interface software; setting parameter variable assignment provided for a subprogram to call; calling the subprogram to generate a numerical control machining instruction for numerical control machining; and driving a numerical control system to perform thread milling on a workpiece by using the numerical control machining instruction. The control method changes the phenomena that the programming process is complicated and an error occureasily because thread coordinate points need to be manually input before. The control is simple, the machining quality of thread milling for the single-aperture blind holes at multiple positions is improved, the machining stability, the machining reliability and the machining efficiency are all effectively improved, and the control method has wide popularization and application values.

The invention relates to a process for synthesizing p-tert-butylbenzoic acid. The process comprises the following steps of: adding p-tert-butyltoluene and cobalt acetate into a reaction kettle, introducing oxygen-containing gas, triggering at the temperature of between 150 and 155 DEG C, performing oxidation reaction for 0.5 to 1 hour, and continuously reacting at the temperature of between 135 and 145 DEG C for more than 5 hours to obtain a p-tert-butylbenzoic acid crude product; cooling the p-tert-butylbenzoic acid crude product to crystallize, performing centrifuge dripping, and striking and washing by using p-tert-butyltoluene to obtain a centrifugation crude product; and adding the centrifugation crude product into a dissolution kettle, adding methylbenzene, raising temperature and dissolving, filtering when a mixture is hot to remove impurities, adding water to wash, transferring materials to a recrystallization kettle, cooling to crystallize, centrifuging, striking and washing by using methylbenzene, and drying to obtain a p-tert-butylbenzoic acid finished product. The prepared p-tert-butylbenzoic acid is white crystals and does not contain mechanical impurities; and the melting point is 164.0 to 167.0 DEG C, the acid value is 312 to 316mgKOH/g, high performance liquid chromatography (HPLC) purity is more than or equal to 99.2 percent, moisture is less than or equal to 0.08 percent, and methylbenzene is less than or equal to 0.05 percent.

The invention relates to a space station environment control and life-support system controller, and a control method. The system controller comprises multiple redundantly arranged power supply unitsand multiple redundantly arranged environment control and life-support system units; the environment control and life-support system units are connected through an interaction channel; the environmentcontrol and life-support system unit comprises a processor module and a power conversion module; the processor module is connected to a sub-system management module, a data sending module, a state telemetry module, a reset circuit, a clock circuit, a data storage and a program storage; and the power conversion module respectively converts secondary direct-current voltage provided by the power supply units into working voltage required by the sub-system management module, the data sending module and the state telemetry module. The control method comprises the steps of: collecting environment monitoring data of each sub-system, and then, analyzing the collected environment monitoring data through the system controller. By means of the space station environment control and life-support system controller, and the control method in the invention, reliable living environment parameter real-time data can be provided for astronauts.

The invention relates to an electronic commerce payment management system in the field of civil aviation, and the system comprises a system server and an operation terminal which can visit the system server through web. The system also comprises a database server connected with the system server, and the system server comprises a system management module group and a business logic module group. The system management module group comprises a user management module, and the business logic module group comprises an order management module, a payment management module, and a ticket refunding module. The system is simple and reasonable in structure, is complete in function, is stable and reliable in performance, and improves the efficiency and reliability.

The invention discloses a handheld electric drill, and belongs to the technical field of electric tools. The handheld electric drill mainly comprises a shell body, a power shaft is mounted in the shell, the two ends of the shell body are provided with a front bearing end cap and a rear bearing end cap respectively, the space defined by the front bearing end cap, the rear bearing end cap and the shell forms a bearing chamber, and lubricating oil is filled in the bearing chamber. A handheld part is connected to one end, close to the rear bearing end cap, of the shell, the end portion of the handheld part is connected to an oil tank, the oil tank is communicated with the bearing chamber through an oil inlet pipe and an oil return pipe, a first power pump is arranged on the end portion, located inside the oil tank, of the oil inlet pipe, the handheld part is provided with a hollow power source mounting chamber, an electromotor is mounted in the power source mounting chamber, the electromotor is in transmission connection with a power shaft through a bevel gear pair, and the oil inlet pipe and the oil return pipe both penetrate through the power source mounting chamber. According to the handheld electric drill, lubricating oil lubrication is achieved, the service life of the handheld electric drill is prolonged, and the handheld electric drill is widely applied to the processing and manufacturing of electric tools.

A user interface analysis system and method can provide aggregate information across a population of users of the user interface. The system includes an activity logging module, an analysis module, and a reporting module. The analysis module is configured to generate an analysis model descriptive of the user interface usage of the plurality of users. The analysis model can take the form of a beta-phase Hidden Markov Model (“BP-HMM”). The reporting module processes the generated analysis model and outputs data indicative of an aggregate of the plurality of users' usage of the user interface.

The invention relates to an outdoor dry-type voltage transformer used for an electric locomotive, which comprises a main body which is composed of an iron core, a primary winding which is sheathed on the iron core, and a secondary winding, a primary terminal connector, a secondary terminal connector, a primary high-voltage insulation column which is sheathed outside of the primary terminal connector, and a base, wherein the main body, the primary terminal connector, the secondary terminal connector and the primary high-voltage insulation column are fixedly installed on the base after integrally adopting epoxide resin and silicon rubber to compositely insulate the secondary terminal connector and the primary high-voltage insulation column into a whole structure, wherein the primary high-voltage insulation column and the main body are in cylindrical shape or ellipsoidal shape, and the connection between the primary high-voltage insulation column and the main body is a spherical surface whose both sides are cut obliquely. The outdoor dry-type voltage transformer can prevent the leakage of oil and the generation of a pollution flashover fault, and the invention has the advantages of stable insulation, fuse protection, long service life, small volume, convenient fixing, high mechanical strength, and wide application.

The invention relates to a transmission case of a gantry planer and realizes both planing and milling operations of a gantry planer with low cost and energy consumption. The transmission case has a structure as follows: a hydraulic non-stop clutch is arranged on the left side of a case body, the hydraulic non-stop clutch is connected with a differential speed reducer via a clutch gear, the output shaft of the differential speed reducer is mounted on the coupling shaft of a power wheel of the planer, an output gear is arranged on the output shaft of the differential speed reducer, the transmission shaft is provided thereon with, from the left to the right, a driven gear, a first shift fork gear, a second shift fork gear and a rotary gear, wherein, the first shift fork gear is connected with a first shift fork, the second shift fork gear is connected with a second shift fork, the first shift fork gear is coupled to the clutch gear, the second shift fork gear is coupled to the a driving gear, a third shift fork is arranged on a motor gear, the motor gear is coupled to the gear of a milling reducer which is positioned on the lower part of the case body, and the output wheel on the output shaft of the reducer engages with the rotary gear on the transmission shaft via a wheel. The transmission case realizes both planing and milling operations and has large economic and social benefits.

The invention discloses a cutting device for an adhesive-product-based tape. The cutting device comprises a baseplate, wherein support pillars are fixedly connected to two sides of the top of the baseplate; a top plate is fixedly connected to the top ends of the support pillars; hydraulic cylinders are fixedly connected to two sides of the bottom of the top plate and positioned between the two support pillars; a connecting plate is fixedly connected to the bottoms of the hydraulic cylinders; one side of the bottom of the connecting plate is fixedly connected with a motor case through a connecting post; and the interior of the motor case is fixedly connected with a motor. According to the cutting device for the adhesive-product-based tape, the problem that processing equipment adopted for production processing and cutting of tapes at present are generally single in structure is solved, the operation complexity is changed, a user can use the cutting device more conveniently, the working efficiency is improved, the tape body can be flexibly cut, the problem that the cutting distance is generally changeless is solved, the normal cutting effect is guaranteed, and the working time is shortened.

A numerical control processing modeling and implementation method of a yellow mud drum national handicraft, comprising the following steps: aiming at the technological characteristics of the yellow mud drum, using AutoCAD software to design handicraft drawings in a computer room, using simulation software to simulate the processing of handicrafts, and drawing Model, and then use numerical control equipment and CAXA software to process after judging the correctness of the model. The modeling and implementation method of the invention is used to process the yellow mud drum national handicraft, which has high processing precision, and the dimensional precision can reach mm, and at the same time, the rate of waste and defective products is reduced, the processing cost is reduced, and the production efficiency is improved.

The invention discloses a twin-turbine hydraulic torque converter and belongs to the field of engineering vehicle parts. The twin-turbine hydraulic torque converter is designed in order to solve the problems that existing hydraulic torque converters are low in work efficiency and cannot be matched with high-tonnage loaders. According to the twin-turbine hydraulic torque converter, the inlet angle beta b1 of blades of a pump impeller is 115-119 degrees, the outlet angle beta b2 of the blades of the pump impeller is 60-64 degrees, and the placing angle gamma b of the blades of the pump impeller is 130-134 degrees. The inlet angle beta s1 of blades of a guide wheel is 104-108 degrees, the outlet angle beta s2 of the blades of the guide wheel is 148-152 degrees, and the placing angle gamma s of the blades of the guide wheel is 133-137 degrees. The inlet angle beta t1 of blades of a first turbine is 112-116 degrees, the outlet angle beta t2 of the blades of the first turbine is 153-157 degrees, and the placing angle gamma t of the blades of the first turbine is 136-140 degrees. The inlet angle second beta t1 of blades of a second turbine is 48.2 degrees, the outlet angle second beta t2 of the blades of the second turbine is 150-154 degrees, and the placing angle second gamma t of the blades of the second turbine is 73-77 degrees. The twin-turbine hydraulic torque converter can be matched with the high-tonnage loaders, and the good complete machine performance, high work efficiency and good fuel economy of the twin-turbine hydraulic torque converter are ensured.

The invention discloses a modification method of negative ion powder and application of the negative ion powder in preparation of negative oxygen ion polyester fibers. The steps are as follows: mixingnano negative ion powder with ethylene glycol; adding 2,5-dihydroxyterephthalic acid (or 2-hydroxyterephthalic acid), a catalyst and a delustering agent, carrying out in-situ polymerization, and conducting cooling and dicing after the polymerization is finished, so as to obtain negative ion powder master batch of which the outer layer is coated with modified polyester; adding the negative ion powder master batch in front of an inlet of a screw extruder through a color master batch adding device on a polyester spinning line; and conducting conventional processes of melt extrusion, spinning andthe like to obtain the negative oxygen ion polyester fiber. According to the scheme, the compatibility of the modified polyester wrapping the outer surface of the negative ion powder and conventionalpolyester is good, the negative ion powder can be evenly distributed in the polyester fiber, the modified polyester has certain hydrophilicity, and generation of negative oxygen ions is facilitated.The preparation method is simple in overall preparation process and suitable for being popularized in existing polyester fiber production enterprises.