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91results about How to "Wide range of types" patented technology

Hexagonal boron-nitride material, preparation method and application of hexagonal boron-nitride material

The invention provides a hexagonal boron-nitride material, a preparation method and application of hexagonal boron-nitride material. The hexagonal boron-nitride material is of an assembling structure consisting of porous boron-nitride whiskers and porous boron-nitride piece layers, or a porous boron-nitride whisker structure distributed with mesopores and macropores and with the specific surface area reaching 420m<2>/g. The preparation method comprises the following steps: (1) adding boric acid, melamine and optional surface active agent into water, mixing, heating, adjusting pH value of solution to be 3-11, crystallizing, and separating solid and liquid to obtain precursor; and (2) carrying out two-section type calcining reduction on the precursor in the step (1) under the atmosphere of ammonia gas or the mixed atmosphere containing the ammonia gas to obtain the hexagonal boron-nitride material. The hexagonal boron-nitride material can be used as an absorbing agent for absorbing metal ions and/or organic matters. The invention also provides a cyclic regeneration method of the hexagonal boron-nitride material. The hexagonal boron-nitride material is an excellent absorbing agent, is excellent in absorbing performance and cyclic regeneration performance, and has good application prospect in the field of water treatment.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Device and method for laser micro shock dieless forming

InactiveCN102527813AEffective local bulgingAchieve moldless formingShock waveHigh pressure
The invention discloses a device for laser micro shock dieless forming device. The device comprises a laser, a light path guiding system, a tooling fixture system, a detection system and a control system, wherein laser beams emitted by the laser are transmitted to the surfaces of workpieces, which are arranged in the tooling fixture system and are attached with flexible absorption layers through the light path guiding system; the absorption layers are induced by laser to generate high-temperature and high-voltage plasmas; the plasmas sharply expand and burst to generate strong shock waves to press towards surface layers of the workpieces and internal tissue structures, so that the workpieces are quickly and plastically deformed; the detection system is used for detecting shock regions on the workpieces and transmitting the detected data to the control system; the control system is used for receiving the data, analyzing and calculating the received data, comparing the analyzed and calculated result with the theoretical deformation of the point and acquiring energy required by next laser shock according to the comparison result; in addition, the control system is used for controlling the energy of the laser beams emitted by the laser next time and also controlling the tooling fixture system to do three-dimensional motion towards the next shock position. The device for the laser micro shock dieless forming, which is disclosed by the invention, is suitable for micro forming of materials which are difficult to form or cannot be formed by using a conventional method.
Owner:SUZHOU UNIV OF SCI & TECH

In-situ adsorption-microelectrolysis-catalytic oxidation sewage treatment equipment and method

The invention discloses in-situ adsorption-microelectrolysis-catalytic oxidation sewage treatment equipment and method, belonging to the technical field of sewage treatment in environment engineering. The in-situ adsorption-microelectrolysis-catalytic oxidation sewage treatment equipment is characterized in that adsorption equipment, electrolysis equipment and catalytic oxidation equipment are integrated so as to gather enable pollutants to be gathered from a low-concentration water phase onto an adsorbent; by using the favorable electric conductivity, the adsorbent is used as a complexly polarized three-dimensional electrode to form countless micro electrolytic baths, so that the organic pollutants are electrolyzed while organic matters are adsorbed, and adsorption active sites are continuously regenerated; and by utilizing an electric insulation material, the three-dimensional electrode is complexly polarized and has a high-class oxidation catalyst function at the same time, so that a gas oxidant dissolved in water and an oxidant generated by side reaction of the electrode form a high-class oxidant to efficiently remove the organic pollutants. According to the equipment and the method, the problems of slow reaction speed, low space-time efficiency, low current efficiency and low pollutant degradation efficiency in the conventional electrolytic reactors are solved, and an excellent market prospect is provided.
Owner:DALIAN UNIV OF TECH

Efficient low-viscosity easily-degradable anti-soluble compressed air foam extinguishing agent and preparation method thereof

InactiveCN110538414AQuick saveWide range of typesFire extinguisherPreservativePerfluorooctanyl sulfonate
The invention discloses an efficient low-viscosity easily-degradable anti-soluble compressed air foam extinguishing agent and a preparation method thereof. The extinguishing agent comprises the following components in percentage by weight: 5-25% of a hydrocarbon surfactant, 3-10% of a fluorocarbon surfactant without perfluorooctylsulfonate, 1.5-10% of a low-viscosity anti-soluble component, 3-15%of a foam stabilizer, 5-15% of an antifreeze agent, 0.2-2% of a preservative and the balance of water. The extinguishing agent has the characteristics of high efficiency, low viscosity, low mixing ratio and easiness in degradation; and the mixing ratio is flexibly selected for different fire extinguishing objects, so that various types of fires can be quickly extinguished. All the components of the extinguishing agent can be rapidly biodegraded in the environment and have no pollution to the environment. According to the preparation method, the problems that macromolecular polysaccharide substance powder is easy to agglomerate in the water, long in swelling time and difficult in uniform component mixing in a traditional adding method are effectively avoided, and the foaming condition of the extinguishing agent in the production process is effectively controlled, so that the production efficiency is remarkably improved.
Owner:应急管理部天津消防研究所

Visual interactive electromagnetic wave experiment teaching system and control method

The invention discloses a visual interactive electromagnetic wave experiment teaching system, which is composed of an experimental platform subsystem, a microwave transmitting and receiving subsystem, and an upper / lower computer operation control subsystem. The experimental platform subsystem is used for collecting the change of the electromagnetic wave, The microwave transmitting and receiving subsystem sends the electromagnetic waves and collects the electromagnetic wave changes to transmit to the upper / lower computer operation control subsystem. The upper / lower computer operation control subsystem handles the received electromagnetic wave changes and forms the image, and is also used for controlling the microwave transmitting and receiving subsystem to send the electromagnetic waves. The invention also discloses a control method based on the system, which includes checking the data of the sensing system; displaying the human-computer interaction interface; selecting the experimental items, functions and parameters; the microwave transmitting and receiving subsystem transmitting the electromagnetic wave; receiving the antenna receiving signal, and imaging the electromagnetic wave. The problems that the theory of electromagnetic wave in teaching the electromagnetic wave is difficult to digest and the theory is difficult to be connected with the practice are reduced. The virtual interactive electromagnetic wave experiment teaching system can support a wide variety of experiment design types, manifestations are vivid and learning autonomy and consciousness are stimulated, which is conducive to the cultivation of knowledge learning and innovation ability.
Owner:成都市金明星科技有限公司 +1

In-situ remediation technology of low-concentration organic polluted underground water and application of in-situ remediation technology

The invention discloses an in-situ remediation technology of low-concentration organic polluted underground water. The technology comprises the steps as follows: an injection well is constructed in aunderground water polluted area, a well pipe is mounted in the injection well, and a hole is punched in the bottom of the well pipe and communicated with a water containing layer, wherein the length of the hole is larger than the longitudinal range of the polluted area; oxygen is injected into the water containing layer through the injection well to perform aerobic control on the water containinglayer; after anaerobic control is performed on the water containing layer for 5 days or longer, aerobic control and anaerobic control are circulated until degradation of organic pollutants in the underground water reaches the standard. The dissolved oxygen content of the underground water is manually adjusted, ordered alternation of aerobic and anaerobic conditions is controlled, and oxidative degradation of low-concentration organic pollutants by hydroxyl radicals produced by oxygen under activation of ferrous iron minerals under the aerobic condition and regeneration of ferrous iron mineralsby microorganisms by means of organic carbon under the anaerobic condition are realized by using inherent components such as iron minerals, organic matter and microorganisms in the water containing layer.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Calibration method for position and posture relationship between robot and position changing machine

The embodiment of the invention provides a calibration method for a position and posture relationship between a robot and a position changing machine, and relates to the field of industrial manufacture. The problem that in the calibration process, the manufacture precision of the position changing machine is neglected is solved. The calibration method comprises the steps that an inclination shaftand a rotation shaft of the position changing machine are controlled to rotate to multiple to-be-tested positions separately, and the robot is operated to trace markers and record TCP coordinates of the markers at all the to-be-tested positions; position and direction vectors of the inclination shaft center line and the rotation shaft center line in a robot coordinate system are acquired separately according to the multiple TCP coordinates; a common perpendicular line segment formed between the inclination shaft center line and the rotation shaft center line located at the reference position when the inclination shaft rotates to the zero position is acquired; and direction vectors of all axes in a position changing machine coordinate system and coordinates of a position changing machine coordinate system original point in the robot coordinate system are acquired according to the inclination shaft center line, the rotation shaft center line located at the reference position and the common perpendicular line segment. The calibration method is used for achieving coordinate movement between the robot and the position changing machine.
Owner:合肥欣奕华智能机器股份有限公司

Device for reinforcing foundation through microbial ultrasonic grouting and construction method thereof

ActiveCN112813953ASpeed up the flowImprove reinforcement uniformitySoil preservationMicroorganismTransformer
The invention discloses a device for reinforcing a foundation through microbial ultrasonic grouting and a construction method thereof. The device comprises a grouting pipe, the upper side of the grouting pipe is connected with an ultrasonic energy concentrator, the ultrasonic energy concentrator comprises an ultrasonic amplitude transformer and an ultrasonic transducer, the ultrasonic transducer is connected with the upper end of the ultrasonic amplitude transformer and the upper end of the grouting pipe, a pulse generator is arranged at the bottom of a grouting hole, an ultrasonic sensor is arranged on the ground on one side of the grouting pipe, the ultrasonic sensor is connected with an oscilloscope, the upper end of the grouting pipe is connected with a grout inlet pipe, the grout inlet pipe is connected with two grout inlet barrels through a grouting pump, and the two grout inlet barrels are filled with bacterial liquid and cementation solution respectively. According to the device, the reinforcement uniformity can be improved, deeper soil bodies can be reinforced, grout can be diffused to the periphery from the grouting pipe with holes in the pipe wall in cooperation with the ultrasonic effect, the reinforcement range is larger, the integrity is higher, the reinforcement uniformity is guaranteed, and the applicable soil body types are wide.
Owner:NANJING UNIV OF TECH +1

Communication receiver antenna feeder protector with electromagnetic pulse protection capability

The invention provides a communication receiver antenna feeder protector with electromagnetic pulse protection capability. The electromagnetic pulses of a short-wave/ultra-short-wave frequency band radio frequency channel are protected based on a multi-order filter, a gas discharge tube and a transient voltage suppression diode, and the function of protecting thunder and lightning electromagnetic pulses and high-altitude electromagnetic pulses at the same time is achieved; and a method for protecting lightning electromagnetic pulses and high-altitude electromagnetic pulses is provided for an antenna feeder path of a communication receiver. Compared with an existing antenna feeder protector implementation scheme based on a gas discharge tube, the communication receiver antenna feeder protector with the electromagnetic pulse protection capability is wide in protection electromagnetic pulse type range, high response speed, high through-current capacity, low insertion loss and low trigger threshold value; and particularly, the two main technical indexes including the response speed and the protection effect of the protector are remarkably superior to an existing antenna feeder protection technology.
Owner:CHINA SHIP DEV & DESIGN CENT

Cigarette cracking device and cigarette thermal cracking analysis method using same

The invention belongs to the technical field of cigarette detection equipment, and particularly relates to a cigarette cracking device. The device comprises a furnace body and a control system, wherein the furnace body adopts a vertical structure and comprises a cracking chamber used for containing samples; an electric furnace heating wire is arranged outside the cracking chamber; the upper end ofthe cracking chamber is connected with a carrier gas inlet; the tail end of the cracking chamber is connected with a carrier gas outlet; the electric furnace heating wire is connected with a thermocouple; the heating time and temperature of the thermocouple is controlled by a control system; the cracking chamber is used for containing a sample to be heated for cracking; the cracking chamber is provided with a quartz tube; a sample containing cage is matched with the diameter of the quartz tube; the middle part of the quartz tube is narrow and is used for clamping the sample containing cage; and the upper end of the furnace body is provided with a cracking knob used for controlling the opening and closing of the cracking chamber. The device is applicable to various types of samples, and has large capacity of samples; and meanwhile, the device has the advantages that the heating is rapid, the cracking reaction process can be quickly completed in a short time, and the temperature gradient in the sample can be obviously reduced.
Owner:CHINA TOBACCO HENAN IND

Random number sampling method for electronic meter

The invention discloses a random number sampling method for an electronic meter, and the method comprises the following steps: carrying out the collection of the flow of the meter at an initial sampling time interval t1, and obtaining the real-time flow Qs; judging whether the flow Qs is less than the starting flow of the table or not, if yes, indicating that the current instantaneous flow Q of the meter is equal to 0, and if not, indicating that the current instantaneous flow Q of the meter is equal to Qs; judging whether a gas-unused state exists or not according to the current instantaneousflow Q of the meter; if so, judging whether the duration of the gas-free state reaches preset cumulative time or not; if yes, performing flow collection every random sampling time interval t2 so thatthe current flow Qs is obtained, and the random sampling time interval t2 is a random value in a time interval [t1, t3], wherein t3 is the time interval larger than or equal to N * t1, and N is an integer larger than 1. The random number sampling method is used, the condition of short flow duration can be effectively detected, cumulant metering is carried out, the metering precision is improved and the operation power consumption of the meter can be effectively reduced.
Owner:GOLDCARD HIGH TECH
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