34results about How to "Wide range of research" patented technology

The invention discloses an experimental system combining a high-temperature and high-pressure reaction system and a Raman spectra analyzer. The experimental system comprises a high-temperature and high-pressure reaction kettle system, a gas sampling system, a liquid sampling system and a Raman spectra analysis system. By fully utilizing the characteristics of Raman spectra, a chemical reaction product is quantitatively and qualitatively analyzed, and the basis is provided for research on reaction kinetics. The experimental system combining the high-temperature and high-pressure reaction system and the Raman spectra analyzer can be widely applied to the field of chemical engineering, environmental engineering and mineral processing technology research.

The invention provides a method and a device for measuring pressure resistance and compression modulus of discrete materials. The device comprises a body and a control device, the body comprises a body top, a body base and vertical supporting columns, and a rigid pressure column is connected with the body top through a load sensor. A discrete material storage bin is provided with an upper opening which allows the rigid pressure column to pass through, at least one side wall of the discrete material storage bin is provided with a plurality of through holes, guide rods are mounted in the through holes and capable of sliding relative to the through holes, a slide retaining plate is mounted in the discrete material storage bin, and a pressure sensor is mounted between the slide retaining plate and the side wall with the through holes. A driving device which is a linear reciprocation mechanism is mounted on the body base, and the discrete material storage bin is mounted on the driving device which is capable of lifting the discrete material storage bin. One end of a position recorder is connected with the body base, and the other end of the position recorder is connected with the discrete material storage bin. By the method and the device for measuring pressure resistance and compression modulus of the discrete materials, precision and effectiveness in measurement of the pressure resistance and the compression modulus of the discrete materials are realized.

The invention belongs to the field of power systems and discloses an artificial pollution accumulation characteristic testing system and an operating method thereof. The system comprises a wind source power section, a test section and an air duct diffusion and dust removal section which are communicated in sequence; the wind source power section is used for providing natural wind for the test section; the test section is used for simulating the pollution accumulation condition of an insulator of a power grid; the air duct diffusion and dust removal section is used for collecting dust and providing an air duct outlet; and the wind source powder section is provided with a base for supporting the testing system. The testing system is internally provided with a draught fan, a dust spreading device, the insulator and the like, so that the artificial simulation for the natural pollution accumulation conditions of the insulator in typical environments such as wind, rain, fog and the like and different pollution degrees in a laboratory is realized; compared with the traditional method for researching the natural pollution accumulation characteristic through circuit sampling, the operating method is time-saving and labor-saving, safe and reliable as well as wide in research range; and a research result has important significance for the operation maintenance as well as the design and selection of the insulator of a power transmission line.

The invention discloses a cable tension uncertainty-based method for determining thin film shapes of planar thin film antennas. The method comprises the following steps of: considering a thin film boundary of a planar thin film antenna as a spline, and establishing a preliminary model of a planar tensioning cable film which takes the spline as a boundary by applying ANSYS; applying a certain tensioning force on a suspension cable, and carrying out static analysis to obtain stress distribution of the cable and the film; defining a deviation range of cable tension, and finding a group of corresponding cable tension when the deviation between a practical stress of a cable-film structure and a reference stress is maximum; searching a next optimal curve control point position through minimizing a stress deviation value output in the step 3); and updating the thin film shape through the optimized curve control point until the relative change amount of the cable-film structure satisfies the accuracy requirement of a convergence criterion, so as to obtain an optimal thin film shape. According to the method, the limits of specific boundary shapes are broken through, and robustness optimization is carried out on the structure, so that the thin film shape is determined more correctly and the service life of materials is prolonged at the same time.

The invention discloses a true-triaxial seepage characteristic and strength testing device for a large-size soil sample. The device comprises a stand; the stand consists of a test frame base (28), a rigid test pressurizing platform (23) and a rigid pressurizing reaction frame cross beam (22) which are parallel to one another, wherein the test frame base (28) is connected and fixed with the rigid test pressurizing platform (23) by a base stand column (27); the rigid test pressurizing platform (23) is connected and fixed with the rigid pressurizing reaction frame cross beam (22) by four rigid pressurizing reaction frame stand columns (21) which are respectively arranged at the four sides; and the rigid test pressurizing platform (23) is provided with a pressure chamber a. After the true-triaxial seepage characteristic and strength testing device is used, the problems of soil deformation and strength change which are caused by unloading of pit excavation can be well researched, so that the device is especially suitable for an unloading confining pressure test of deep soil.

The present invention provides an artificial contamination deposition characteristic test system, which comprises a wind source power segment, a test segment and a wind channel diffusion dust removing segment, wherein the wind source power segment, the test segment and the wind channel diffusion dust removing segment are sequentially communicated, the wind source power segment is provided for providing nature wind for the test segment, the test segment is provided for simulating a contamination deposition condition of insulators of a power grid, the wind channel diffusion dust removing segment is provided for collecting dust and providing a wind channel outlet, and the wind source power segment is provided with a base for supporting the test system. According to the present invention, the fan, the dust sprinkling device, the insulator and the like are arranged inside the test system, such that artificial simulation comprising nature contamination deposition on the insulator under typical environments such as wind, rain, fog and the like and under different contamination degrees can be performed in the laboratory, characteristics of time saving, labor saving, safety, reliability and wide research range are provided compared with the traditional nature contamination deposition characteristic research method adopting line sampling, and research results provide important significances for operation maintenance and design type selection of the transmission line insulator.

The invention discloses a cold flow test device for a scaling linear plug type spray pipe carrier. The cold flow test device comprises a lifting body component, a plug type spray pipe component, a force-measuring balance component and a supporting component, wherein a front part of a lifting body, a middle part of the lifting body and a rear part of the lifting body all have hollow structures and are fixedly connected in turn, so as to form a lifting body appearance of the carrier; the lifting body component comprises the front part of the lifting body, the middle part of the lifting body, the rear part of the lifting body, a vertical tail, a horizontal airfoil, an airfoil pin, a bottom cover plate and a belly cover plate; the plug type spray pipe component comprises a tail shell, a plug type spray pipe engine and an engine pin; the plug type spray pipe engine is mounted in the tail shell; the force-measuring balance component comprises a force-measuring balance and a balance protecting cover; and the supporting component comprises a supporting arm, a front rectifying cover and a rear rectifying cover. The cold flow test device has a simple structure and is low in cost; the plug type spray pipe engine of the cold flow test device is a single part, so that the structure is simple; the device is only applied to a cold flow test; and the ordinary carbon steel is selected as the raw material, so that the cost is low.

The invention discloses a method for improving content of amylose in rice by using RNA interference in the technical field of biology. The method comprises: cloning a Q enzyme RBE3 genetic fragment from the rice as an RNA interference fragment; starting an expression by using an endosperm specific promoter; constructing a siRNA expression vector of RBE3 gene; and obtaining transgenic rice interfering the RBE3 gene by using a method of Agrobacterium-mediated transformation. RT-PCR and Southern are hybridized to check the integration and expression conditions of a target gene; an iodine development process for measuring the content of endosperm amylose of transgenic rice strains shows that the average improvement magnitude of the amylose of the transgenic plants is 140 percent compared with non-transgenic strains, and reaches 238 percent to the maximum; and after screening, the transgenic rice strains of which seed amylose is remarkably improved are obtained. The method for improving the content of the amylose in the rice lays a foundation for producing the amylose on a large scale by using the transgenic rice.

The invention discloses a natural accumulated dirt checking field of an insulator. The natural accumulated dirt checking field comprises a transformer, a voltage divider, at least one supporting insulator and a frame formed by a portal rod tower, wherein the transformer is connected with the voltage divider, the at least one supporting insulator is arranged into a row at equal intervals, a frame bar is arranged at the upper end of the supporting insulator and used for supporting a cable connected with the voltage divider, and the frame combined by the portal pole tower is arranged above the supporting insulator. According to the natural accumulated dirt checking field, insulators of multiple forms are suspended on the frame, a V cluster included angle is regulated by regulating a suspension point position and a string length, an experimental investigation of charged or uncharged accumulated dirt characteristics of the insulators of 1000kV and below voltage classes can be carried out after insulators are charged, a research method for sampling a power grid running insulator is changed, the research scope is wide, and an important meaning is achieved for improving the power supply reliability and economy by a research result.

The invention relates to a test system suitable for researching a deicing fault of a multilevel power transmission wire. The test system comprises a wire shrinkage ration module, a deicing control module, a tensile force measuring module, a monocular camera module and a calculation processing module, wherein the wire shrinkage ratio module comprises a long rope, fixed supports fixed on two ends ofthe long rope, and a traction support disposed between the fixed supports and used for hanging the long rope; the deicing control module comprises a relay and an electromagnet; the tensile force measuring module comprises a tensile force sensor and a dynamic strain instrument; the monocular camera module comprises a high-speed camera, a calibration plate and a marker; and the calculation processing module comprises a processor connected with the camera and the dynamic strain instrument. The test system has the beneficial effects that multiple parameters are adjustable, and the applicable research range is wide; the breakthrough in the field based on scale model test research from scratch can be achieved, and the significance for prompting relevant researches can be achieved; and the testsystem can be built in a room, and is convenient to install, easy for processing components and high in practicability.

The invention relates to a test method suitable for multi-span transmission line ice-shedding fault research. The method comprises steps: 10, according to the prototype line structure parameters and the prototype line and model line material parameters and in combination of test site conditions, each similarity coefficient of a test model is determined through a similarity theory, wherein the prototype line structure parameters comprise a line model, a span, a height difference, sag, an ice thickness, an ice-shedding form and the like. The test method suitable for multi-span transmission lineice-shedding fault research has the beneficial effects that multiple parameters are adjustable, and the applicable research range is wide; breakthrough from nothing for the test research based on a scale model in the field is realized, and great promotion significance is realized for the related research; indoor construction can be realized, the mounting is convenient, the assembly is easy to process and prepare, and the practicality is strong.

The invention provides a six-unit tile-shaped plug nozzle cold flow test device, which comprises a plug cone, a six-unit inner nozzle plug nozzle assembly, a plug block, combustion chamber assemblies and a measuring assembly, wherein the plug block and unit inner nozzles have the same appearance and size, the molded surface structures of the left side and the right side of the plug cone are symmetrical, the molded surfaces are integrally processed, a row of round holes are processed at each side and are used for assembling the unit inner nozzles, all outlets of the assembled unit inner nozzles are in lap joint with the tile-shaped curved surface of the plug cone, the opening parts of the three unit inner nozzles positioned at the same side of the plug cone are provided with the combustion chamber assembly. In the test process, the unit inner nozzle is replaced into the plug block according to test requirements. The invention provides the compression ratio straight-line tile-shaped plug nozzle cold flow test device with multifunction, simple structure and lower cost, different test requirements are met, the height compensation characteristic of the plug nozzle and the influence of relevant structure factors on the height compensation characteristic can be studied, and the like.

The invention belongs to the technical field of measurement and particularly relates to an integrated test device for simulating a DC system integrated type grounding fault. The device comprises a test control instrument and an integrated fault simulation generator. The test control instrument is connected to the integrated fault simulation generator and comprises a first shell which is internally provided with a control circuit board. The surface of the first shell is provided with a liquid crystal display screen, a setting panel, an operation button and a master switch. The control circuit board is connected to the liquid crystal display screen, the setting panel, the operation button and the master switch. The integrated fault simulation generator comprises a second shell which is provided with a pointer type voltage meter, a pointer type ammeter and a DC output device, the DC output device is connected to the pointer type voltage meter and the pointer type ammeter through a I section branch, and the DC output device is connected to the pointer type voltage meter and the pointer type ammeter through a II section branch. The integrated test device has the advantages of a wide research range of a test and a quick and efficient process.

The invention discloses a visual test device for simulating grouting of grouting holes in different positions of a duct piece. The visual test device comprises a double-liquid grouting system, a model box system, a support system and a data acquisition and processing system. The invention further provides a test method of the visual test device for simulating grouting of the grouting holes in the different positions of the duct piece. The device has the following technical effects: 1, local segment grouting simulation can be realized, the size of the matched model box is small, and less transparent soil, cement slurry and water glass slurry are required by the test, so that the test cost can be saved, and the test period can be shortened; 2, the transverse and longitudinal side lengths of a model box are not large, so that the visual advantage of the transparent device cannot be influenced by too long perspective depth; 3, the device is provided with a rotating bracket, so that the grouting condition of the grouting hole at any position on the segment ring of the actual engineering can be simulated; and 4, a matched test image measurement technology is high in precision, soil body motion information in a specified area range can be measured, and long-time continuous measurement can be carried out.

The invention discloses a method for reducing the content of poplar lignin with RNA interference in the field of biological technology; CCR gene segment is cloned from poplar and is used as an RNA interference segment, a constitutive promoter CaMV35S is used for promoting and expressing to construct an expression vector containing CCR gene front-back segments, agrobactrium tumefaciens is used for mediating, the front-back structure of the CCR gene is converted to the poplar, by the reactive plant PCR detection and the detection of lignin and holocellulose of transgenic poplar, the lignin content of the transgenic plant is reduced by 9.7 percent in an average way compared with the lignin content of the non-transgenic plant, the holocellulose content of the transgenic plant is improved 3.17 in an average way compared with the holocellulose content of the non-transgenic plant,, thereby providing a method for reducing the content of poplar lignin, so as to establish the basis for providing papermaking raw material in a large scale by utilizing the transgenic poplars.

An experimental device and method for studying the failure behavior of fuel elements under severe nuclear reactor accidents, the experimental device includes an upper electrode cooling chamber, a middle cylinder, a lower electrode cooling chamber, a simulated fuel rod and a tensile testing machine; the middle cylinder contains Multiple heat shielding devices, which can heat the cladding to above 2200°C, carry out single fuel rods or fuel rods under severe accident conditions caused by nuclear reactor coolant loss accidents, reactivity introduction accidents, and accident mitigation measures such as core water injection The invention also provides an experimental method; the invention discloses the failure mechanism of the fuel element by carrying out the failure behavior experiment of the fuel element under a severe nuclear reactor accident, which has important guiding significance for the safety design of the nuclear reactor.

The invention discloses a cable tension uncertainty-based method for determining thin film shapes of planar thin film antennas. The method comprises the following steps of: considering a thin film boundary of a planar thin film antenna as a spline, and establishing a preliminary model of a planar tensioning cable film which takes the spline as a boundary by applying ANSYS; applying a certain tensioning force on a suspension cable, and carrying out static analysis to obtain stress distribution of the cable and the film; defining a deviation range of cable tension, and finding a group of corresponding cable tension when the deviation between a practical stress of a cable-film structure and a reference stress is maximum; searching a next optimal curve control point position through minimizing a stress deviation value output in the step 3); and updating the thin film shape through the optimized curve control point until the relative change amount of the cable-film structure satisfies the accuracy requirement of a convergence criterion, so as to obtain an optimal thin film shape. According to the method, the limits of specific boundary shapes are broken through, and robustness optimization is carried out on the structure, so that the thin film shape is determined more correctly and the service life of materials is prolonged at the same time.

The invention discloses a system and method for adjusting the thickness of the ice layer and performing a collapse test. The system part includes a thermal insulation and airtight laboratory. A concrete water tank with an open top is arranged in the heat preservation and airtight laboratory. The outer wall of the concrete water storage tank is covered Wrapped with a thermal insulation layer, the thermal insulation and airtight laboratory is also equipped with a cooling device for cooling the upper water of the concrete reservoir and a temperature regulating device for regulating the temperature of the lower water of the concrete reservoir; in addition, the invention also discloses Corresponding methods for adjusting the thickness of the ice layer and carrying out the avalanche test; the present invention realizes the adjustment of the thickness of the ice layer and the avalanche test, and simulates the freezing and melting process of the reservoir area in cold regions of my country in the laboratory. Scientific research provides technical support.

The invention relates to a test system suitable for multi-split wire reversal fault research, which comprises a split wire module (1), a reaction frame (2), a torque loading disk (3), a loading moduleand a monocular measurement module, wherein the split wire module (1) comprises a plurality of parallelly-arranged long ropes (11), spacer bars (12) and clump weights (13); the reaction frame (2) isarranged at two ends of the long ropes (11) respectively for drawing and pulling the long ropes (11); the loading module comprises a hoister (5) arranged correspondingly to the torque loading disk (3), a bracket (6) with an adjustable height, a thin rope (7) and a force sensor (8); and the monocular measurement module comprises a high-frequency camera (4) and a computer (10). The test system has the beneficial effects that multiple parameters are adjustable; the applicable research range is wide; research on the split wire reversal mechanism and the reversal characteristics are done in view ofthe initial tension, the split number, the split circle diameter, the number of spacer bars, the span, and the like, and the applicable range is wide.

The invention discloses a method for improving content of amylose in rice by using RNA interference in the technical field of biology. The method comprises: cloning a Q enzyme RBE3 genetic fragment frThe invention discloses a method for improving content of amylose in rice by using RNA interference in the technical field of biology. The method comprises: cloning a Q enzyme RBE3 genetic fragment from the rice as an RNA interference fragment; starting an expression by using an endosperm specific promoter; constructing a siRNA expression vector of RBE3 gene; and obtaining transgenic rice interferom the rice as an RNA interference fragment; starting an expression by using an endosperm specific promoter; constructing a siRNA expression vector of RBE3 gene; and obtaining transgenic rice interfering the RBE3 gene by using a method of Agrobacterium-mediated transformation. RT-PCR and Southern are hybridized to check the integration and expression conditions of a target gene; an iodine developming the RBE3 gene by using a method of Agrobacterium-mediated transformation. RT-PCR and Southern are hybridized to check the integration and expression conditions of a target gene; an iodine development process for measuring the content of endosperm amylose of transgenic rice strains shows that the average improvement magnitude of the amylose of the transgenic plants is 140 percent compared withent process for measuring the content of endosperm amylose of transgenic rice strains shows that the average improvement magnitude of the amylose of the transgenic plants is 140 percent compared withnon-transgenic strains, and reaches 238 percent to the maximum; and after screening, the transgenic rice strains of which seed amylose is remarkably improved are obtained. The method for improving thenon-transgenic strains, and reaches 238 percent to the maximum; and after screening, the transgenic rice strains of which seed amylose is remarkably improved are obtained. The method for improving the content of the amylose in the rice lays a foundation for producing the amylose on a large scale by using the transgenic rice.content of the amylose in the rice lays a foundation for producing the amylose on a large scale by using the transgenic rice.

The invention discloses a method for reducing the content of poplar lignin with RNA interference in the field of biological technology; CCR gene segment is cloned from poplar and is used as an RNA interference segment, a constitutive promoter CaMV35S is used for promoting and expressing to construct an expression vector containing CCR gene front-back segments, agrobactrium tumefaciens is used formediating, the front-back structure of the CCR gene is converted to the poplar, by the reactive plant PCR detection and the detection of lignin and holocellulose of transgenic poplar, the lignin content of the transgenic plant is reduced by 9.7 percent in an average way compared with the lignin content of the non-transgenic plant, the holocellulose content of the transgenic plant is improved 3.17in an average way compared with the holocellulose content of the non-transgenic plant,, thereby providing a method for reducing the content of poplar lignin, so as to establish the basis for providing papermaking raw material in a large scale by utilizing the transgenic poplars.

The invention relates to a flowing and heat transfer characteristic simulation device for a water-oil mixture in a regenerative cooling channel, and belongs to the field of flow and heat transfer characteristic simulation. The device consists of a storage tank, a filter, a constant flow pump, a flowmeter, a tee joint, a preheating section, a four-way joint, a secondary heating section, a cooling device, a filter, a back pressure valve, a kerosene recovery device, a gas-liquid separator, a wet gas flowmeter, a gas collection device, a liquid collection device, a measurement and control computer, a data acquisition device, a temperature sensor, a wall temperature sensor, a pressure sensor and a high-pressure gas source. The functions of accurate working medium input, segmented mixing, heating and product separation and collection are achieved, and the mixing and cracking of a kerosene and water mixture in a cooling channel of a scramjet engine can be simulated. The flowing and heat transfer characteristics of the kerosene and water mixture in the cooling channel of the scramjet engine are obtained. The device has the advantages of convenience in use, stable work, accurate working condition, good safety and the like.

The invention belongs to the technical field of electric power system electrical apparatus fault diagnosis, and particularly relates to an adjustable resistance type simulation device for a high voltage combined electrical apparatus contact overheating defect to effective detect the overheating fault caused by poor contact of internal conductor contacts of high voltage combined electrical apparatus--tank type circuit breaker internal conductors. The adjustable resistance type simulation device comprises bus conductors, flanges, a screw, nuts, short contact pieces, and spacers. The bus conductors are connected with the two flanges. Distance between the two flanges is 150mm+ / -10mm. The screws penetrate from a threaded hole of one flange on one side. Before the screw penetrates through a threaded hole of the right flange, the nut, the short contact pieces and the spacers are screwed into the screw and are penetrated through the threaded holes. The screw is fixed by the nuts and the spacers finally. Free combination can be achieved as needed. Contact resistance values resulting from different contact errors of multiple contacts can be simulated, the problem that GIS internal conductoroverheating failure is difficult to detect is effectively solved, safe and stable operation of equipment is ensured, and high practical value and promotion value are achieved.

The invention discloses a honeycomb type electric shock maze device replacing a water maze and a video analysis system, and relates to the technical field of animal experiment devices, and the honeycomb type electric shock maze device comprises a maze and a camera; the video analysis system comprises a controller, a computer, an experiment process operation module and a video analysis module, the camera is electrically connected with the controller through a wire, and the controller is electrically connected with the computer through a wire; and a plurality of paths through which the mouse can pass along the second silk screen and reach the labyrinth unit provided with the attractant are formed in the labyrinth. According to the maze device capable of replacing the Morris water maze, the experiment process does not depend on water any more, and therefore the application range of the water maze experiment is effectively widened; according to the invention, the experimental difficulty is reduced, the water source is saved, experimental result data of probing tracks, probing time, probing modes, electric shock times and electric shock time of rats and mice can be accurately calculated, the effectiveness of experimental results is improved, and the labor capacity of experimenters is reduced.

The invention belongs to the field of power systems and discloses an artificial pollution accumulation characteristic testing system and an operating method thereof. The system comprises a wind source power section, a test section and an air duct diffusion and dust removal section which are communicated in sequence; the wind source power section is used for providing natural wind for the test section; the test section is used for simulating the pollution accumulation condition of an insulator of a power grid; the air duct diffusion and dust removal section is used for collecting dust and providing an air duct outlet; and the wind source powder section is provided with a base for supporting the testing system. The testing system is internally provided with a draught fan, a dust spreading device, the insulator and the like, so that the artificial simulation for the natural pollution accumulation conditions of the insulator in typical environments such as wind, rain, fog and the like and different pollution degrees in a laboratory is realized; compared with the traditional method for researching the natural pollution accumulation characteristic through circuit sampling, the operating method is time-saving and labor-saving, safe and reliable as well as wide in research range; and a research result has important significance for the operation maintenance as well as the design and selection of the insulator of a power transmission line.

The invention provides a thermally-driven fire whirlwind simulation experiment device. The experiment device comprises an experiment device body and a liquid level constant maintaining mechanism; the experiment device body comprises an experiment table and a fire whirlwind simulation frame mounted on the experiment table, and the experiment table is provided with a mounting position for mounting a combustor; the liquid level constant maintaining mechanism comprises a liquid supplementing pool and a liquid storage pool for continuously supplementing liquid to the liquid supplementing pool, and the liquid supplementing pool is provided with an overflow port; and the liquid supplementing pool is communicated with the combustor through a connecting pipe. According to the thermally-driven fire whirlwind simulation experiment device, fuel can be supplemented into the combustor in real time through the liquid level constant maintaining mechanism, the fuel liquid level is maintained to be constant, and the combustion rate of fire cyclone is accurately calculated.

The invention discloses a flowing reaction device allowing forming and growing of new particles of atmospheric aerosol. The length of the flowing reaction device is about 22 meters. The flowing reaction device comprises four parts of a sample injection region (I), a transition region (II), a nucleation region (III) and a growing region (IV), wherein the sample injection region comprises three sample inlets and a set of water bath heating water inlets and outlets; the transition region comprises a temperature humidity detecting opening, a low-volatility substance sample inlet and a primary sampling opening; the nucleation region comprises a set of water inlets and outlets for controlling temperature of water bath, a plurality of intermediate sampling openings and a temperature humidity detecting opening formed in the upper part of the nucleation region; the growing region comprises a plurality of growing region sampling openings; the change of the particle number concentration and the change of the particle diameter of each sampling opening are detected through scanning an electrical mobility particle diameter spectrometer. The flowing reaction device disclosed by the invention can be used for researching the generative mechanism and the rising characteristic of the new particles in the atmosphere, so that the dynamics of the nucleation of the aerosol is further researched, and the flowing reaction device has the characteristics of being high in precision, good in stability, simple and convenient to operate, and the like.

The invention discloses a large-scale soil sample true triaxial seepage characteristic and strength test device, which comprises a frame, which consists of a test frame base (28) arranged parallel to each other, a rigidity test pressurized platform (23) and a rigid The pressurized reaction force frame beam (22) is composed of, wherein, the described test frame base (28) is connected and fixed by the base column (27) between the rigid test pressurized platform (23), and the described rigid test pressurized platform (23) is connected and fixed with the rigid pressurization reaction frame crossbeam (22) by four rigid pressurization reaction frame columns (21) respectively positioned at its four sides, on the described rigidity test pressurization platform (23) A pressure chamber a is provided. The invention can well study the soil deformation and strength change problems caused by foundation pit excavation and unloading, and is especially suitable for unloading confining pressure test of deep soil.

The invention discloses an evaluation method and system based on a domain knowledge graph. The method comprises the following steps: acquiring core periodicals and common periodicals of a domain for a to-be-evaluated DKG; expanding three elements of the DKG triad to form a triad expansion set Wi; if the triple matching appears in one sentence of the literature, performing strong correlation counting ST1; if only two elements in the triple appear in the same sentence, performing inconsistent counting ST2; if two or more elements in the triple are in one paragraph, performing weak correlation counting ST3; v = [v1, v2, v3] representing the correlation degree of the triad and the literature, and the correlation intensity quantity s of the triad and the literature = alpha1v1 + alpha2v2 + alpha3v3; the mass q of the triple is equal to alpha1v1-alpha2v2. According to the method and the system, the triad is directly matched with the text, the process of extracting the triad from the text is omitted, and the relationship between two triads does not need to be considered.