74results about How to "Solve difficult puzzles" patented technology

The invention discloses a construction method for a honeycomb-structured wave absorbing plate shrinkage ratio simulation material. The construction method comprises the following steps that 1, modeling is conducted on a honeycomb-structured wave absorbing plate, and the reflection rates obtained when electromagnetic waves are transmitted into the honeycomb-structured wave absorbing plate in different angles are obtained through simulation calculation; 2, by calculating the reflection rates obtained when a simulation material is in different thicknesses and an electromagnetic absorbing agent is in different volume fractions at a shrinkage ratio test frequency and comparing the reflection rates with the reflection rate obtained when the honeycomb-structured wave absorbing plate is located at a prototype test frequency, the reflection rate, nearest to the reflection rate obtained when the honeycomb-structured wave absorbing plate is located at the prototype test frequency, of the shrinkage simulation material is found, and then the formula parameters and thickness of the honeycomb-structured wave absorbing plate shrinkage ratio simulation material are obtained; 3, the honeycomb-structured wave absorbing plate shrinkage ratio simulation material is constructed. According to the construction method, the honeycomb-structured wave absorbing plate shrinkage ratio simulation material is designed through the reflection coefficient, limitation of the material electromagnetic parameter and geometric parameter in an electromagnetic shrinkage ratio theory is broken through, and construction of the honeycomb-structured wave absorbing plate shrinkage ratio simulation material is achieved.

The invention provides a simulation teaching system for a single-chip microcomputer curriculum. The system comprises at least a functional circuit board that includes a single-chip microcomputer and the function of the functional circuit board is realized under the control of the single-chip microcomputer. Besides, the simulation teaching system also comprises a teacher computer, a student computer, an RS485 communication line and a communication conversion module. The teacher computer is a teaching computer and is also used for executing software simulation, soft and hardware simulation and pure hardware simulation. The communication conversion module is connected with the teacher computer and the student computer and converts an RS232 interface into an RS 485 interface; besides, the communication conversion module is connected with the functional circuit board by the RS485 communication line. According to the simulation teaching system for the single-chip microcomputer curriculum provided in the invention, problems that teaching of a current single-chip microcomputer curriculum is abstract and there is no good simulated teaching means are solved; a mode of combination with concrete projects is employed, so that it is convenient for understanding and grasp for students.

The invention relates to a soil fertilization method by directly returning straws to field. The specific operation steps comprise: 1, in a crop harvesting season, using a harvester to harvest straws and crops, reserving low stubbles, collecting crop straws; 2, concentrating crop straws collected in one mu field in 1/2 to 1/5 mu cultivated land, uniformly laying the straws, spreading lime nitrogen, performing rotary tillage, mixing the crop straws with surface soil, performing rotary tillage twice; fallowing the treated cultivated land for one month, planting crops normally on cultivated land which is not treated; 3, performing second rotary tillage, decomposition and conversion speed of the straws greatly accelerating; 4, fallowing the cultivated land for a crop growing season, the straws fully decomposing and converting into organic materials in the soil and releasing inorganic nutrients, to obtain a fallow field. Straw residual bodies cannot be seen in the soil in the fallow field, and organic material content in the surface soil of the fallow field is improved by more than 8%, soil total nitrogen content is improved by more than 5%, soil alkali-hydrolyzable nitrogen content is improved by more than 5%, and rapidly available potassium content is improved by more than 10%.

The invention relates to a molecular sieve crystallization mother liquor treatment method, which mainly solves the problems that in the prior art residues of crystallization mother liquor after water and organic amine are removed from the molecular sieve crystallization mother liquor are easy to precipitate and coke and difficult to discharge. The molecular sieve crystallization mother liquor treatment method is adopted and comprises the steps of performing reduced pressure dehydration, condensation liquid rectification and vacuum drying, recovering organic amine and the like, the problems are well solved, and the method can be applied to molecular sieve crystallization mother liquor treatment.

The invention discloses an air cleaning device capable of conveniently treating deposited dust, which solves the problem that deposited dust is difficult to treat in the current air cleaner. The air cleaning device capable of conveniently treating deposited dust, comprises a machine body, an air inlet and an air outlet, and an ultraviolet tube, a fan, a fan motor, an active carbon filter layer and an anion generator are arranged in the machine body. The air cleaning device is characterized in that a drawer capable of storing deposited dust is arranged in the machine body, thus solving the long-time problem that deposited dust is difficult to treat.

The invention provides an integral lifting construction method for a cooling tower system and a steel gallery, which comprises the steps of 1) conducting pre-construction preparation, firstly buildinga cooling tower steel structure supporting foundation model, a cooling tower maintenance platform model and a pipeline support model, then building an integral structure model by combining the builtmodels with a cooling tower, a cooling water pipeline and a steel gallery, performing stress simulation analysis on the model, ensuring the stress of each part in the lifting process to meet requirements, and deepening the design of construction drawings; 2) splicing the cooling tower system and the steel gallery on the ground according to the construction drawings; and 3) and integrally and synchronously lifting the spliced cooling tower system and steel gallery through a hydraulic lifting system. According to the invention, the cooling tower system and the steel gallery are firstly spliced on the ground and then integrally lifted, thereby reducing the hoisting and splicing difficulty of components of the cooling tower system, and saving the labor. In addition, the components of the cooling tower system can be simultaneously spliced, thereby ensuring the construction period, improving the installation and construction quality and efficiency of the cooling tower system.

The invention discloses a method and a device for preparing a coating by using nanosecond pulse laser cladding, belonging to the technical field of the preparation of coatings on material surfaces through laser cladding, and aiming to solve the problems existing in the present nanosecond pulse laser cladding. According to the method and the device, a metal is deposited on the surface of a workpiece through MOCVD (metal organic chemical vapor deposition), and the surface of the workpiece is scanned by nanosecond laser light at the same time, so that the metal is cladded on the surface of the workpiece, and a coating with a micron or submicron level thickness is formed on the surface of the workpiece. The method and the device disclosed by the invention do not have special requirements for a substrate material, are wide in application range, and can meet the needs of the preparation of the coatings of plane workpieces and special-shaped workpieces; a prepared thin film coating has the advantages of densification, controllable thickness (micron or submicron) and firm film-substrate adhesion; meanwhile, the surface roughness of the workpiece subjected to processing is not less than that of the workpiece before cladding; the secondary processing such as grinding and polishing is not needed, so that the production cost is reduced; meanwhile, after being processed by the method and the device, the workpiece can not be deformed and can meet the processing requirements for precision workpieces.

The invention discloses an organic/inorganic composite microcapsule fire-extinguishing agent, and belongs to the field of fire-fighting materials. The organic/inorganic composite microcapsule fire-extinguishing agent comprises the following components in percentage by weight: 15 to 25 percent of monoammonium phosphate, 60 to 75 percent of ammonium sulfate, 0.5 to 1.5 percent of urea, 1 to 2.5 percent of potassium chloride, 4 to 9 percent of sodium silicate, 0.1 to 0.5 percent of fatty acid zinc, 0.2 to 0.5 percent of fatty acid magnesium and 1.5 to 2 percent of methyl silicane, wherein the sum of the components is 100 percent. According to the organic/inorganic composite microcapsule fire-extinguishing agent, grain diameters of the components are controlled, and the components are microencapsulated by a special process to prepare the fire-extinguishing agent, so that the fire-extinguishing agent cannot deteriorate after being used for 7 years and is inert at the temperature of less than 60 DEG C, and the standard of a product is applicable to international standard organization (ISO), European norm (EN) 615 and national standard (GB) 4066.2-2004; and the fire-extinguishing agent contains nutrient elements such as N, P, K and B which are required by plants and is absolutely harmless to human and animals, and microbes can be degraded within three days, so the organic/inorganic composite microcapsule fire-extinguishing agent is the most ideal 'reen' fire-extinguishing agent which is environment-friendly and low in cost and does not have carbon emission, is efficient in fire-extinguishing performance, wide in fire-extinguishing range and low in production cost and has high economic and social benefits.

The invention provides a suspended type air purification device which solves the problem that the traditional air purifier influences people in space. The suspended type air purification device comprises an air inlet, an air purification part, an air outlet and fixing parts. The suspended type air purification device is characterized in that the fixing parts are arranged at the upper end of the air purification part, form two pyramid shapes and mutually correspond end to end; and the fixing parts are used for fixing the air purification device on a ceiling through fixing pieces such as screws.

The invention discloses a making method for a super-thick copper foil and high heat-conducting copper clad laminate. The method includes the steps of: glue solution preparation, gluing, superposition and hot pressing. Specifically, the glue solution comprises: low-bromine epoxy resin/phenolic curing system, a coupling agent, an imidazole curing accelerator and an inorganic filler, and a solvent butanone. By adjusting the production technological conditions, the method provided by the invention solves the difficult making problem of super-thick copper clad laminates, and is simple and convenient. The prepared super-thick copper clad laminate has good flatness, and the bonding force between the super-thick copper foil and a base material is good. At the same time, by adding a lot of excellent and efficient heat-conducting filler to the formula, the molded base plate has efficient heat-conducting property, and the thermal conductivity is greater than 1.6W/mk, thus well solving the rapid heat dissipation problem of heavy current base plates. The prepared super-thick and high heat-conducting copper clad laminate also has excellent heat resistance, with T260 being greater than 30min. Meanwhile, the invention can also meet the demands of a PCB lead-free making process.

The invention discloses an installation method of a steel cofferdam for reinforcing a bridge underwater structure. The method is characterized in that by cleaning a stand column, arranging an anti-skid washer, installing a hoop, assembling a counterforce frame, fixing counterforce chain blocks, lowering the steel cofferdam, arranging cross beams and longitudinal beams, installing jacks and performing symmetrical pressing, rapid pressing installation of the steel cofferdam for reinforcing the bridge underwater structure is completed; the hoop and the counterforce frame are assembled into a whole through buckles, the counterforce chain blocks are connected with the stand column to form an inverted-triangle counterforce system, and the positions of the jacks are determined according to the specification of the steel cofferdam. The method has the advantages that construction is fast and convenient, steel cofferdams with different diameters can be pressed in place in one step, the operationis simple and easy to control, the self-counterforce system and hoisting equipment are integrated, large hoisting equipment is not needed, installation and detachment are easy, the space requirementis low, and the problem that as tie beams exist between a pier and a pile foundation, operation is difficult is solved; hoisting chain blocks can be used for lowering and adjusting the steel cofferdamand can also be used for lowering materials and formworks in the later stage, and the construction efficiency is greatly improved.

The invention discloses a simple pile head breakdown aided construction method which comprises the following steps: controlling the initial setting time of later concrete in a graded manner; treating pile head reinforcements, and reducing the peeling difficulty between the reinforcements and concrete; and inserting a plurality of PVC conical hollow pipes into the existing concrete pile head. According to the method disclosed by the invention, under the condition that the existing construction conditions and requirements are not changed, partial reinforcements of the pile head only need to be subjected to proper isolation treatment after reinforcement cage binding completion, a certain number of special PVC hollow pipes are inserted after underwater concrete grouting completion, and the aim can be achieved. The method disclosed by the invention is convenient to operate and less in matching equipment, the construction cost is not increased, and constructors can easily, rapidly and skillfully operate. According to the method disclosed by the invention, the problem that an underwater concrete pile head is difficult to break down for a long time is solved, the pile head breakdown efficiency is greatly improved, and the construction cost is reduced. With increase of construction quantity of site construction pile foundations and increase of manual cost, solution to the pile head breakdown problem creates huge economic benefits for state infrastructures.

The invention provides a cyclopolymer containing a carbamido large ring and a production method and application thereof. The production method comprises the step of mixing monomer, a chain transfer agent, an initiator and a solvent for reaction to obtain the cyclopolymer containing the carbamido large ring; and by choosing the specific monomer for large ring production, the problem that in ordinary bifunctional monomer, due to low intramolecular bifunctional reactive activity, synthesis of large ring cyclopolymer is difficult is solved. The monomer can be subjected to cyclization reaction whenthe concentration is lower than 0.3 mol/L, and the reaction yield is high, so that the problems that under a low concentration condition, the polymerization yield is low, and under a high concentration condition, cross-linking is liable to happen during polymerization are solved. Moreover, by changing the length of an X group chain, controllable change of the size of the large ring can be achieved.

The invention discloses horizontal geological survey equipment adopting a continuous pipe and a coring method. The equipment comprises a chassis, a drilling rig, a power head, the continuous pipe, a conveying mechanism, an outer drilling rod, coring equipment and a winding drum assembly. A guide drilling tool and an inner flat and hollow outer drilling rod are used for conducting guide drilling; the coiled tubing is conveyed in an area needing coring or geological exploration; the continuous pipe can carry the coring cylinder or other geological exploration equipment to be conveyed to a drilling position; the high-pressure fluid conveyed by the continuous pipe drives the coring equipment so as to drive the drilling machine to carry out horizontal coring or other geological exploration requirements. Different from a rope used in a traditional rope coring process, the continuous pipe is dragged, conveyed and corrected through the power head assembly and the conveying mechanism winding drum assembly, so that high-pressure fluid in the continuous pipe drives coring equipment, and a coring drilling tool in the coring equipment is efficiently conveyed; the problem that a coring drilling tool is difficult to convey in a horizontal hole is effectively solved, and the horizontal coring drilling efficiency of equipment is improved.

The invention discloses an infinitesimal-based conductor temperature calculation method for a cable joint and a body, and the method comprises the steps: constructing an axial thermal circuit model, and enabling the axial thermal circuit model to divide the cable joint into a plurality of segment intervals according to the insulation thickness of each structure of the cable joint, dividing each segment interval of the cable joint into a plurality of segments of infinitesimal elements along the axial direction by taking the center of a crimping pipe of the cable joint as an original point; uniformly dividing the cable body into a plurality of sections of infinitesimal elements along the axial direction; and based on the axial thermal circuit model, inputting the surface temperatures of the cable joint and the cable body, and carrying out iterative calculation to obtain the conductor temperatures of the cable joint and the cable body. Compared with the prior art, the method has the advantages that the calculation result is more accurate, the calculation result can be obtained only by inputting the surface temperatures of the cable joint and the body in the model, less time and energy are consumed, and the problem that the sensor is difficult to arrange is solved.

The invention discloses a preparing method for a vanadium-titanium magnetite oxidation pellet for a vertical furnace. The preparing method includes the steps that vanadium-titanium magnetite concentrate powder and bentonite are mixed, so that a first mixed material is obtained; part of the first mixed material is mixed with sodium carbonate and water, so that a second mixed material is obtained; the second mixed material is subjected to first pelletizing treatment, so that a mother bulb is obtained; the other part of the first mixed material is mixed with water, so that a pelletized material is obtained; the mother bulb and the pelletized material are mixed and subjected to second pelletizing treatment, the mother bulb is wrapped by the pelletized material, and a vanadium-titanium magnetite pellet is obtained; and the vanadium-titanium magnetite pellet is subjected to drying and oxidizing roasting, so that the vanadium-titanium magnetite oxidation pellet for the vertical furnace is obtained. By the adoption of the method, the problem that direct reduction of a vanadium-titanium magnetite pellet gas base for the single full-vanadium-titanium iron concentrate preparing vertical furnace is difficult can be solved, in addition, the production cost is effectively reduced, and a guarantee is provided for economical running of the vertical furnace.

The invention discloses a scientific research partner recommendation method based on multi-dimensional features under a Research Gate platform. According to the method, association relationships between scientific researchers and other scientific researchers are measured from three dimensions of text similarity of papers published by the scientific researchGate platform, social association degreesamong the scientific researchers and influences of the scientific researchers; and a scientific research partner recommendation model is constructed by using a linear combination method to perform Top-N recommendation, so that personalized scientific research partner recommendation services are provided for scientific research workers. Wherein text similarity calculation is carried out by utilizing a Doc2Vec text depth representation model, and weight parameters are adjusted through a stochastic gradient descent and back propagation algorithm, so that the model is optimal; the social correlation degree is calculated based on the common proportion of friends, and the higher the proportion is, the more similar the two are. Personalized scientific research partner recommendation services canbe provided for scientific research workers, and therefore the problem that scientific research partners are difficult to find is solved.

The invention discloses a hooking type grounding hook with a monitoring function. The hooking type grounding hook comprises a grounding hook body, a wire clamping hook tongue, a monitoring module anda rotary connection hanging frame. The hooking type grounding hook is characterized in that: a hanging hook is arranged at the upper portion of the grounding hook body; a hanging fixing pin is arranged on the rotary connection hanging frame; the hanging fixing pin is used for hooking the hanging hook at the upper portion of the grounding hook body; the lower portion of the rotary connection hanging frame is movably connected with the grounding hook body through a connecting pin; the monitoring module is installed on the wire clamping hook tongue; a wire bare conductor hung on the grounding hook contacts with an electrode and the wire clamping hook tongue, so that an electrical connection loop can be formed; the electrical connection loop is connected with the monitoring module through a wire; and the monitoring module transmits information to a system cloud platform server. With the hooking type grounding hook with the monitoring function of the invention adopted, the problem that a ground wire is difficult to hang in current ultrahigh-voltage line construction operation is solved; the wire hanging state detection of the grounding hook can be accurately completed, so that the working state of the grounding hook in use can be timely and accurately understood by working personnel in a use site and the background of a remote monitoring center, and casualty accidents caused by accidental electric shock due to illegal operation are avoided.