176results about How to "Guaranteed normal generation" patented technology

The invention provides an active control method of an oversaturated traffic situation at an intersection group, and aims to realize the active prevention of the oversaturated traffic situation at the intersection group. First, analysis is conducted to the traffic development situation. The possible traffic flow in the balanced dynamic situation of users and the ideal traffic flow of the optimal dynamic situation of a system are predicted based on the needs of the starting point and the ending point of a short time in the future on going out in variable time. Second, traffic signals are actively controlled and optimized. The information of the oversaturated intersection group which possibly occurs in a short time in the future, key crowded paths, recommended shut paths and the optimal transfer flow are extracted, a secondary optimal road network under the requirement of the expected optimal transfer flow is formed, and a signal control scheme is dynamically optimized through a vague matching method by integrating a historical traffic signal control strategy library. Finally, the traffic forecast information is generated. The travel choice behaviors of a driver are analyzed, the corrected value of the saturation of the possible flow of the key crowded paths is worked out by integrating the requirements on the expected optimal transfer flow, and the corrected value of the saturation of the possible flow of the key crowded paths and the saturation of the possible flow of the recommended shunt paths are released as traffic forecast information.

This invention relates to FeLiPO4 doped with La or Ac, positive material of Li ionic secondary cells and its preparation method characterizing that the formula is: LiMxFe1-xPO4 (M is La or Ac, 0.01<-x<-0.05) in the structure of olivine, the preparation includes the following steps: taking Li compound, Fe, phosphate, La or Ac as the raw materials to add them into a ball mill for wet mill then putting them into N2 and H2 mixed atmosphere for pre-calcining, then wet-grinding them and drying them and then ball-milling them, then putting them into N2 and H2 mixed atmosphere for secondary calcining to get the invented positive material. Advantages: fine crystalizatin, conduction performance of ions is good and discharge performance of heavy current is good, tap density is great and the problem of easy oxidation of Fe2+ is solved.

The invention relates to a large casting-molding self-combined silicon carbide product. The method comprises the following steps: taking silicon carbon particulates and fine powder, silicon carbon powder, silica powder, silicon powder, carbon black, molybdenum disilicide micro powder, active magnesium oxide and a water reducer as powder; by taking ludox as a binding agent, molding by adopting a vibrating casting manner; sintering the molded green body under a protective atmosphere after conserving and baking, wherein the highest sintering temperature is 1300-1500 DEG C; sintering and cooling to room temperature along with a furnace, so as to prepare the self-combined silicon carbide product. The large and profile self-combined silicon carbide product can be prepared, and has the advantages that the size and the shape of the product are not limited, performance is excellent, and the like, and the prepared self-combined silicon carbide product can be applied to the fields such as a blast-furnace tuyere and a cooling wall tile in the iron and steel industry and an aluminum electrolytic cell in the non-ferrous industry.

The invention discloses an angle compensation type laser heterodyne interference displacement measuring device and an angle compensation type laser heterodyne interference displacement measuring method. A cube-corner prism provided with a semi-transparent semi-reflecting film in a coated manner is used as a measuring mirror used for measuring displacement and a corner, and an interference signal generated by a laser heterodyne interference optical path is detected by a photoelectric detector, and after data acquisition processing, a displacement measuring initial value is acquired. After data acquisition processing of a laser spot position signal generated by a laser spot detection corner measuring optical path, a pitch angle error value and a deflection angle error value of a measured object are acquired, and then a corner value required by displacement compensation is acquired. The initial value is compensated by using the corner value, and a final displacement measuring value is acquired. A technical problem of a conventional laser heterodyne displacement measuring technology of influences of corner errors of cube-corner prisms on displacement measuring precision is solved, and therefore high-precision displacement measurement is realized, and the three freedom degrees of the measured object such as the deflection angle, the pitch angle, and the linear displacement are detected at the same time.

The invention discloses a method for planting high-yield okra. The method comprises the following steps of seed soaking for accelerating germination, seedbed management, seeding, land management, field planting and harvesting. The method contributes to healthy and quick growth of okra, the quality of okra is good, generation of nutrient content is guaranteed, and the use value is high.

The invention discloses a method and a system for network address translation based on priority queue. The method comprises the steps that: firstly, a NAT service processing unit divides the received data massages needing to be NAT processed into multiple queues having different priorities, and sends the data massages having different priorities to corresponding queues of a CPU queue unit, wherein the data massages meet the NAP processing condition; secondly, a queue reading unit reads the data massages of the highest-priority queue in the CPU queue unit, the data massages is upward sent and network address translated, until the data massages of the highest-priority queue is empty, then the data massages of the next priority queue is read, upward sent and network address translated, the process is the same for other data massages. The invention improves the way of sending data massages upward, better guarantees the upward sending of high-priority data massages and generation of corresponding NAT converting item information, as well as application of high-priority users.

The invention discloses a method for preparing a centrifugal nodular cast iron pipe. The method discloses the preparation process of the centrifugal nodular cast iron pipe of high quality, the preparation process comprises a series of operation processes of molten iron preparation, nodulizing of molten iron, centrifugal casting, annealing treatment, pipe body shaping and coating protection and the like. The method is suitable for preparation of cast iron pipes of the specification of DN 80-1000 mm, the application range is wide, and the preparation process is simple. The cast iron pipe prepared through the method has the characteristics of being high in appearance quality, fine in material structure, high in production efficiency, long in service life and the like, and compared with existing steel pipes and gray iron pipes, the cast iron pipe prepared through the method has better decay resistance and tensile property.

Disclosed are a multi-scale-structure SiC/C porous composite ceramic and a preparation method thereof. The multi-scale-structure SiC/C porous composite ceramic is obtained by taking a polyacrylonitrile-based carbon fiber felt as a framework, settling carbon layers on the surface of the polyacrylonitrile-based carbon fiber felt and then growing a SiC protecting layer and SiC nanowires inside the framework. According to the multi-scale-structure SiC/C porous composite ceramic and the preparation method thereof, by settling the carbon layers on the surface of carbon fiber through the hydrothermal carbonization technology, the carbon fiber can be connected into a porous carbon framework, so that the strength and the specific surface area of the carbon framework can be improved; then by taking CO as a carbon source and SiO as a silicon source and through a chemical gas-phase reaction method, the SiC layer and the SiC nanowires can be formed inside the carbon frame to structure the SiC/C porous composite ceramic. The multi-scale-structure SiC/C porous composite ceramic has a large specific surface area and has the advantages of being easy to form and high in strength.

The invention discloses a powder metallurgy production method of alligatoring rings of an automobile gearbox, which comprises the following steps that: (1) proportioning: metal power stocks are prepared according to a certain proportion; (2) warm compaction forming: after being preheated, the prepared metal powder stocks are thrown into a mould of a powder extrusion moulding machine for warm compaction forming so as to form shaped green pressing; and (3) sintering: the shaped green pressing is arranged into a high-temperature mesh belt furnace for sintering. By the powder metallurgy production method for producing alligatoring rings of an automobile gearbox, the production efficiency can be improved, the profile precision can be guaranteed, and the production cost can be reduced.

A preparation method of nascent fiber for production of carbon fiber comprises the following steps: uniformly mixing modified lignin or commercialized lignosulfonate and a solvent to prepare a solution a; uniformly mixing polyacrylonitrile resin and the solution to prepare a solution b, or directly using a de-monomerized polyacrylonitrile spinning solution as the solution b; blending the solution a and the solution b; keeping the blended solution at the constant temperature of 40-80 DEG C to obtain a uniform spinning solution with solid content being 12-33 wt%; pressing the spinning solution into coagulating bath through a spinneret plate to generate polyacrylonitrile/modified lignin nascent fiber; and finally winding at constant rate to obtain the nascent fiber for production of carbon fiber. The preparation method of the invention has advantages of low cost and high quality.

The invention relates to an automated testing system and method. Testing types, testing cases, testing result storage addresses and the like are configured by a control panel, a background establishes Http Connection with an interface according to the configuration, the testing cases are called, an interface return result is acquired and then analyzed, two results are compared by calling a comparison algorithm, and the testing result and a comparison result are stored in corresponding paths. Both functional testing and comparison testing can be performed, testers do not need to test the testing cases one by one, the system can acquire results of all the testing cases once, the testers do not need to manually compare the results, the comparison algorithm is used for intelligent comparison, the system has a downloading function, the function testing result and the comparison testing result can be easily downloaded into various formats by the control panel, the system monitors testing progress and testing states in real time through the control panel, a user can stop testing at any time, and the system is easily operated through interfaces.

The invention belongs to the field of building coatings and particularly relates to a functional inorganic mineral wall material. The functional inorganic mineral wall material is prepared from, by mass, 20-40 parts of ground calcium carbonate, 10-20 parts of ash calcium powder, 0-10 parts of washed kaolin, 0-10 parts of metakaolin, 0-10 parts of calcined kaolin, 0-5 parts of calcium bentonite, 5-15 parts of diatomaceous earth, 0-10 parts of zeolites, 10-30 parts of modified gypsum, 0-20 parts of magnesium oxide, 0-10 parts of magnesium sulfate, 0-5 parts of titanium dioxide, 0-5 parts of white cement, 0-5 parts of sepiolite, 0-5 parts of attapulgite, 2-5 parts of talcum powder, 0-5 parts of wollastonite, 0.5-1 part of water-retaining agent and 0-2 parts of nano titanium dioxide photocatalyst.

The invention belongs to the technical field of resource comprehensive utilization, and relates to a semicoke-based activated coke and a preparation method thereof. According to the invention, directcoal liquefaction residue is subjected to ash removal pretreatment, and the direct coal liquefaction residue is pretreated, pulverized to 80-120 meshes, and dried; the semicoke powder is pulverized to80-120 meshes and dried; the semicoke powder and the direct coal liquefaction residue are mixed according to a mass ratio of (3:2)-(4:1), and a starch solution for molding is added and stirred uniformly to form a mixture A; the mixture A is subjected to compression moulding under a pressure of 5-7 MPa to obtain a moulded material strip; the moulded material strip is dried; and the dried moulded material strip is carbonized and activated under the protective atmosphere; and the activated moulded material strip is cooled to room temperature under the protective atmosphere to obtain the semicoke-based activated coke. The method takes the semicoke powder as the main raw material, adds the direct coal liquefaction residue, and prepares the high-adsorption performance and high-strength activated coke by grinding, kneading, molding, charing and activation; and the method is simple in process and low in cost, and is suitable for large-scale industrial production.

The invention discloses an electrolyte material of low-temperature oxide fuel battery and a production method thereof, characterized by the steps of adding 0.01-2M of carbonate solution into 0.01-2M of mixed solution of cerium nitrate or of cerium nitrate and doping element nitrate according to the mol ratio, 1:1.5-4.0, of cerium to carbonate iron; the doping elements are Y, La, Pr, Sm, Gd or Ca, the mol ratio of the doping elements to Ce is 1:1%-50%; stirring and heating or not heating the solution until the deposition is formed, and sintering the obtained dried matrix for 1 to 10 hours at 500 to 850 DEG C after drying, therefore nanometer composite material of cerium oxide and carbonate or the doping cerium oxide and carbonate is acquired. The electrolyte material used as the oxide fuel battery is chemically steady and includes high performances at low temperature (300 to 600 DEG C), by shown as the test, 1000 millwatts/square centimeter of output power can be attained at 550 DEG C.

The invention provides a synthesis method for Ti3SiC2 powder. The synthesis method comprises the following steps of S1: mixing materials: evenly mixing raw materials and mixed fused salt at a ratio toobtain mixed powder, wherein the raw materials are the mixture of Ti powder, Si powder and C powder, and the mixed fused salt is the mixture of KCl powder and NaF powder; S2: calcining: calcining themixed powder obtained in the S1 to obtain a calcined material; S3: washing: washing the calcined material obtained in S2 to obtain a washed material; S4: drying: drying the washed material obtained in S3 to obtain Ti3SiC2 powder. The synthesis method has the effects that synthesis steps are greatly simplified, a production process is shortened, cost is lowered, technological parameters can be easily controlled, industrialization can be easily realized, the shape and the size of a powder product grain can be effectively controlled, and the dispersibility and the purity of the powder are improved.

The invention relates to an ultrasonic detection automatic sampling device and an operation method thereof, pertaining to the technical field of automatic sampling. The automatic sampling device comprises a sampling cart, a sampling trolley, a lifting mechanism, a sampling device, an auxiliary electric device and an operation chamber. The sampling cart and the sampling trolley are movably connected and both provided with proximity switches connected with a computer; the lifting mechanism and the sampling device are positioned in the sampling trolley internally provided with an ultrasonic locator; the sampling cart is driven by a motor to move along the Y axis of three-dimensional space, and the sampling trolley is driven by the motor to move along the X axis of the three-dimensional space and the motor is connected with an inverter; the auxiliary electric device comprises a contactor, a breaker, a photoelectric encoder, the proximity switch, a video camera and an ultrasonic locator, and the photoelectric encoder, the proximity switch, the video camera and the ultrasonic locator are connected with the computer. The whole device realizes automatic, remote and unattended sampling under the control of the computer.

The invention relates to a multicast tree formation method for prolonging network survival time. The method comprises (1) selecting a link with minimum damage to transmit data packet; (2) after a while, transmitting a detection packet from a source node; (3) transmitting a return message to the source node, and when the node receives the message, constructing an AODV routing algorithm; (4) when receiving RREQ-J message, searching the position of this node in an energy value line; (5) performing time-lag, and retransmitting the RREQ request packet. The invention considers the different characteristics of the initial stage and second half stage of the data packet network transmission, and adopts the strategy including not performing time-lag retransmission to the node with large residual energy, performing time-lag retransmission to the node with relatively small residual energy, and not performing request packet retransmission to the node with very small residual energy, so as to effectively ensure the formation of multicast tree, improve the data packet transmission efficiency and the performance of the entire network, and prolong the survival time of the network.

The invention belongs to the field of two-dimensional materials, and particularly discloses a two-dimensional molybdenum ditelluride vertical heterojunction and a preparation method and application thereof. The two-dimensional molybdenum ditelluride vertical heterojunction comprises a 1T'-MoTe<2> part and a 2H-MoTe<2> part, and the two parts are connected through interlayer Van der Waals' force; the preparation method comprises the following steps: S1, drying a mixed solution of ammonium tetramolybdate and sodium chloride, putting the dried mixed solution as a molybdenum source into a reactor,putting a growth substrate on the molybdenum source, putting tellurium powder as a tellurium source into the reactor, and putting the tellurium powder at the upstream of the molybdenum source; and S2, raising the temperature of the molybdenum source and the tellurium source to a reaction temperature, naturally cooling to room temperature, introducing carrier gas into the reactor to bring the tellurium source to the molybdenum source, introducing a reducing agent, and generating the two-dimensional molybdenum ditelluride vertical heterojunction on the growth substrate. The metal phase and semiconductor phase vertically stacked MoTe2 heterostructure prepared by the invention can effectively reduce the Schottky barrier of contact between a metal electrode and a material, and an important thought for improving metal-semiconductor contact is provided.

The invention discloses an iron ore well-blended powder with Sierra Leone coarse powder for reducing cost and improving efficiency. The iron ore well-blended powder includes, by weight, 8-25% of the Sierra Leone coarse powder, 15-40% of Brazilian Carajas sinter feed, 15-30% of Brazilian coarse iron ore powder, 15-25% of Australian FB powder, and 8-25% of Mauritania coarse powder. In the invention,the Sierra Leone coarse powder is successfully applied to sinter the well-blended ore; by matching proper iron ore, adverse factors, such as high content of Al2O3, high assimilation temperature and low liquid phase strength, of the Sierra Leone coarse powder, are overcome, thus guaranteeing the application effect of the Sierra Leone coarse powder.

This invention discloses a logo anti-false method used in compressing video streams characterizing in providing a structured cryptographic key and utilizing a predesigned picture to generate color logo, the color value of each point in it is regulated according to the structured cryptographic key to laminate the said logo to original video signal dynamically, its position or brightness is determined according to the information related to time. The video stream after laminating the logo is compressed to get the video stream via anti-false process to get the video stream via anti-false process to be provided to the play device. The processed video steam is depressed and detected in related values to get relevant thresholds for detection.

The invention discloses a method and equipment for purifying a zinc sulfate solution. The method comprises the following steps of: adding zinc powder into the zinc sulfate solution for purifying; and after the zinc powder is added, adjusting the acidity of the zinc sulfate solution, namely a) detecting a BT value of the zinc sulfate solution into which the zinc powder is added; b) adding an acid solution into the zinc sulfate solution according to the BT value in the step of a); and c) repeating the step a) to the step b) until the BT value of the zinc sulfate solution is between 1.2 and 2.0.According to the method, the acidity of the zinc sulfate solution is controlled by detecting the BT value of the zinc sulfate solution to destroy an oxidation film on the outer surface of the added zinc powder, and the generation of high-quality seed crystals is ensured on the basis of reducing the addition amount of the zinc powder and improving the activity of the zinc powder, so that the aims of improving the purification quality and reducing the consumption of the zinc powder are fulfilled.