34results about How to "Improve high stability" patented technology

The invention belongs to the technical field of optical precision measurement, and relates to a method for measuring super long focal length of a confocal combination lens and a device thereof. The method is as follows: firstly determining the focal position of a reference lens and the focal position of the combination of the measured lens and the reference lens according to the confocal focusing principle, measuring the distance delta between the two focal points and the distance d0 between the two lenses, and substituting the delta and the d0 into a formula to calculate the focal length value of the measured lens, a pupil filtering technique can also be used in the measurement to enhance the sensitivity of focal length measurement. The invention proposes that accurate focusing is realized by the characteristics that an object corresponds to the microscope objective focus when the confocal point responds to the maximum curve value, and extends the confocal microscopy principle to the super long focal length measurement field, and proposes the confocal focusing principle. The method combines the confocal focusing principle with the combination lens method, has the advantages of high measurement precision and strong anti-environment interference ability, and can be used for high-precision focal length measurement during the detection and assembly of the super-long focal length lens.

The invention discloses a production process of rock asphalt modified asphalt and a production process of a rock asphalt modified asphalt mixture. The production process of rock asphalt modified asphalt comprises the following process steps of: placing matrix asphalt in an asphalt tank with a stirring device to heat to about 160 DEG C, and starting the stirring device; then slowly adding a part of rock asphalt and a stabilizer under stirring, heating to about 175 DEG C, and stirring for 30 minutes at the temperature; adding the rest asphalt to continuously stir for 1-1.5 hours to ensure that asphalt particles are dissolved completely; and moving the prepared rock asphalt modified asphalt in a finished product storage tank, and properly stirring in the storage process. When in use, mineral aggregate is heated and controlled to about 185 DEG C; the rock asphalt modified asphalt is added in the mineral aggregate to stir, and the temperature is controlled to about 175 DEG C to obtain the mixture; and the mixture is discharged when the temperature is reduced to 170 DEG C. By adopting the process to prepare the rock asphalt modified asphalt, the operations are simple and rock asphalt can be distributed in the matrix asphalt evenly.

The invention relates to organic phospholipid hydrolase, a mutant, an encoding gene and an application thereof in degradation of organophosphorus pesticides. The organic phospholipid hydrolase PoOPH is originated from edible oil pseudomonadaceae, the mutant of which is a protein which is derived from the protein shown as an amino acid sequence SEQ ID No.1 in a sequence table and has the activity of the organic phospholipid hydrolase, wherein the 250th and the 263rd amino acids are substituted by a single site or double sites. Compared with a parent, the catalytic activities of the PoOPH mutant to parathion-methyl and paraoxon-ethyl are respectively improved by 5680 and 37.5 folds. Meanwhile, the PoOPH mutant maintains the excellent heat stability of the parent. The PoOPH mutant provided by the invention has two attributes at the same time: high vitality and excellent heat stability and has a good application prospect in the field of degrading organophosphorus pesticides.

The invention provides a porous carbon and nitrogen two-dimensional nano-sheet and a method for preparing an IPMC electrochemical actuator by using the porous carbon and nitrogen two-dimensional nano-sheet. The porous carbon and nitrogen two-dimensional nano-sheet is prepared with the method which comprises the following steps: uniformly grinding carbon and nitrogen precursors and glucose, and thus obtaining a mixture; heating the mixture to 450-600 DEG C, and thus obtaining a compound of graphite-phase carbon and nitrogen and two-dimensional nano-carbon sheets; under the protection of gas, heating the compound to 700-1000 DEG C, and thus obtaining the porous carbon and nitrogen two-dimensional nano-sheet. The IPMC electrochemical actuator prepared from the porous carbon and nitrogen two-dimensional nano-sheet shows excellent electrochemical energy storage and electric mechanical response performance, for example, large specific capacitance, high response rate, large deformation and high stability, therefore having great potential applications in the field of smart materials such as insect wings, braille display and bionics of medical catheters. In addition, the method is simple in process, does not need complex equipment, and is easy for industrial production.

Heat-expandable microspheres containing a thermoplastic resin shell and a thermally-vaporizable blowing agent encapsulated therein. The thermoplastic resin is a polymer of a polymerizable component containing acrylonitrile, methacrylonitrile and acrylate ester and which satisfies specific conditions 1 and 2, where Condition 1: the amount of the acrylonitrile (A)<the amount of the methacrylonitrile (B), and Condition 2: the total amount of the acrylonitrile (A), the methacrylonitrile (B) and the acrylate ester (C) in the polymerizable component ranges from 61 to 100 wt %. Also disclosed are hollow resin particles manufactured by expanding the heat-expandable microspheres, a composition containing a base component and at least one selected from the heat-expandable microspheres and the hollow resin particles, and a formed article manufactured by forming or molding the composition.

The invention discloses a polyphenylene sulfide resin-based carbon fiber suspension sizing agent and a preparation method thereof. The sizing agent is composed of polyphenylene sulfide resin powder, sodium polyacrylate, polyethylene glycol and deionized water, wherein the polyphenylene sulfide resin powder accounts for 65-75wt% of the total mass of the solid components, the sodium polyacrylate accounts for 12-17wt% of the total mass of the solid components, and the polyethylene glycol accounts for 13-18wt% of the total mass of the solid components. Sized carbon fibers prepared by the sizing agent are suitable for intermediates such as carbon fiber fabrics, prepregs and the like for polyphenylene sulfide resin-based composite materials, and have good mechanical properties, temperature resistance and two-phase interface bonding force.

The invention relates to the technical field of waste treatment, in particular to an environment-friendly mechanical device for solid waste smashing. The environment-friendly mechanical device comprises a bottom plate and a smashing box fixedly installed above the bottom plate, wherein a motor is fixedly installed on the upper surface of the smashing box, the output end of the motor is connected with a smashing shaft, and a plurality of smashing bulges are symmetrically installed on the two sides of the smashing shaft. When the device is used, waste is conveniently smashed through the smashing box, materials are conveniently filtered through a filtering device, waste residues meeting requirements fall off, waste residues not meeting the requirements continue to be smashed, and a drying device is conveniently driven to work through a control device when the waste residues fall off; and when the waste falls, the smashing shaft rotates to smash the waste firstly, then a spring is driven by the smashing shaft to stretch out and draw back, a ball is driven to stretch a second spring to rotate, a ball body at the end of a rotating rod is driven to make contact with an arc-shaped groove in a discharging plate, and then a filtering plate is driven to move up and down.

The invention relates to a high-perpendicularity electric pole and a construction technology thereof, and relates to the technical field of electric pole construction, the high-perpendicularity electric pole comprises a vertically-arranged pre-buried base and a linear rod, and the linear rod is located at the top of the pre-buried base and is coaxially arranged with the pre-buried base. The electric pole further comprises a first clamping seat, a second clamping seat and a plurality of positioning pieces, the first clamping seat is installed at the top of the embedded base and is coaxial with the embedded base, the second clamping seat is installed at the bottom of the linear rod and is coaxial with the linear rod, and the first clamping seat and the second clamping seat are stacked and fixedly connected. The positioning piece is installed on the second clamping base, a plurality of positioning grooves are formed in the side, facing the second clamping base, of the first clamping base, the positioning piece comprises a positioning rod, one end of the positioning rod is connected with the second clamping base, and the other end of the positioning rod is correspondingly inserted into the positioning grooves. The electric pole has the effects that the perpendicularity of the linear rod is improved during mounting and positioning, the situation that the linear rod inclines is better reduced, and potential safety hazards of the electric pole are reduced conveniently.

The invention discloses a multifunctional pressure plate assembly for a cutting machine. The multifunctional pressure plate assembly comprises a height fixing assembly and a pressure plate main assembly, wherein the lower part of the pressure plate main assembly is provided with a limiting mechanism for ensuring that a cutter head assembly of the cutting machine stably rotates and shears; the height fixing assembly and the pressure plate main assembly are installed side by side, a supporting plate used for bearing the limiting mechanism is installed on the height fixing assembly, and a telescopic device used for fixing the height of the supporting plate is connected to the supporting plate; and the supporting plate synchronizes the working heights of the limiting mechanism and the cutter head assembly by supporting the limiting mechanism after height setting. The multifunctional pressure plate assembly has the advantages that an auxiliary protection effect on the pressure plate can be achieved, and a cutter head is prevented from falling off and deviating; and high-quality tailoring of tailored fabrics with different thicknesses can be realized.

The invention discloses a tractor distributor with a high-stability one-way valve. The tractor distributor comprises a valve body, a front cover and a back cover. The valve body is internally provided with a valve rod, and the two ends of the valve rod extend into the front cover and the back cover respectively. The front cover is provided with a handle. The valve body is provided with a one-way valve cavity, and a one-way valve reset spring, a one-way valve element and a one-way valve steel ball are arranged in the one-way valve cavity. The one-way valve element comprises a front guide body, a middle connecting body and a tail end. A two-stage guide body is arranged on the peripheral face of the middle connecting body, and an unload groove penetrating through the two-stage guide body in the axial direction of the one-way valve element is formed in the two-stage guide body. The end face, matched with the valve body, of the back cover is provided with a sealing groove, and a special-shaped sealing ring is arranged in the sealing groove. The tractor distributor has the advantages that the problems that the periphery of a front guide body of a valve element of an existing one-way valve is abraded, a sealing piece is pressed and damaged easily and sealing becomes invalid can be solved, the sealing effect of the back cover is good, and the tractor distributor cannot be contaminated by dust easily.

The invention discloses a hydropower station drainage channel floating object intercepting device, and particularly relates to the technical field of floating object intercepting, the hydropower station drainage channel floating object intercepting device comprises an intercepting floating column, a floating intercepting column is arranged at one end of the intercepting floating column, floating supporting plates are arranged on one side of the floating intercepting column and one side of the intercepting floating column, and a monitoring and removing mechanism is arranged above the floating supporting plates; the monitoring and removing mechanism comprises a rack plate arranged above the floating supporting plate, and the upper portion of the rack plate is meshed with a driving gear. By adopting the monitoring and removing mechanism, whether the intercepting device is damaged or not can be inspected regularly, problems can be found in time, and maintainers can be dispatched to perform on-site maintenance operation in time, so that the situation that the device is damaged to cause floating object leakage to affect blockage of a drainage channel can be avoided, the intercepting treatment effect can be improved, and later maintenance operation is facilitated; intelligent interception processing operation is achieved, the workload is small, and the processing cost is low.