204results about How to "Rich research" patented technology

The invention discloses a supercritical carbon dioxide fracture-creepage-seepage test device for high-temperature high-pressure coal petrography. The device comprises a triaxial cell, a supercriticalcarbon dioxide generator system, an axle load and confining pressure loading system, an acoustic emission monitoring system, a temperature rise control system, a deformation-pressure monitoring systemand a permeability measuring system. The device is capable of realizing the supercritical carbon dioxide fluid fracture test of coal petrography under high temperature and high pressure, monitoring and recording the temperature and pressure changes of supercritical carbon dioxide and characteristics of fracture cracking and extension in the supercritical carbon dioxide fracture process in real time, monitoring and recording the axial and radial deformations of coal petrography samples in real time, directly and effectively measuring the DH4 permeability of the coal petrography before and after the fracture without unloading the coal petrography sample stress, and measuring the CH4 permeability of the coal petrography after the fracture under the action of creepage. The measurement methodis high in precision, intuitional and high in automation degree, and the device is simple in structure.

The present invention relates to a controllable preparation method of a nitrogen-doped porous carbon-supported metal monoatomic material, and belongs to the technical field of material science and engineering. According to the present invention, porphyrin and a metalloporphyrin are polymerized through a polymerization reaction. The proportions of the porphyrin and the metalloporphyrin are regulated to regulate a metal content (0.06-4.00wt%), and monoatomic metal types (A type, AB type, ABC type) are regulated by regulating different types of metalloporphyrins. According to the present invention, controllable preparation of a metal monoatomic material is realized with good expansibility and reproducibility; meanwhile, the problems of low metal content, few types and the like in the prior art are solved, and researches in the related fields such as the synthetic methodology of metal monoatomic materials and the like.

The invention discloses a high temperature and high pressure coal rock supercritical carbon dioxide fracturing-creep deformation-seepage experimental method. A supercritical carbon dioxide fluid fracturing-creep deformation-seepage experiment of coal rock is executed under high temperature and high pressure, change of temperature and pressure of the supercritical carbon dioxide and fracture crackinitiation and expansion features in a supercritical carbon dioxide fluid fracturing process are monitored and recorded in real time, and axial deformation and radial deformation of a coal rock sampleare monitored and recorded in real time, moreover, CH4 permeability of the coal rock before and after fracturing can be measured directly and effectively under a condition where coal rock sample stress is not cancelled, and measurement of the permeability of the CH4 of the coal rock under the creep deformation function after fracturing can be realized. The measurement method provided by the invention is high precise, visual and highly automatic, and devices used in the method are simple in structure.

The invention provides a supersonic free vortex mixing layer wind tunnel. The wind tunnel comprises a transition section (1), a stabilizing section (2) and a spray pipe experimental section (3), wherein the transition section (1) is used for introducing air flow; the stabilizing section (2) is connected to the downstream side of the transition section (1) and is provided with a first separation plate (21) for separating the introduced air flow into two strands of air flow; the spray pipe experimental section (3) is connected to the downstream side of the stabilizing section (2) and comprises a spray pipe part (31) and a mixing experimental part (32); a transparent window is formed on the peripheral wall of the spray pipe experimental section (3); the spray pipe part (31) has a double free vortex spray pipe structure and is used for accelerating the two strands of air flow to form a free vortex state respectively; the mixing experimental part (32) is positioned on the downstream side of the spray pipe part (31) and is used for mixing the two strands of air flow in the free vortex state to form a free vortex mixing layer, so that velocity fields of the two strands of air flow at an inlet of the experimental part of the wind tunnel meet the requirement of supersonic free vortex distribution; therefore, an ideal supersonic free vortex mixing layer can be obtained in the wind tunnel.

A zinc oxide photocatalyst with visual light activity is prepared through dissolving dihydrated zinc acetate and polyvinyl pyrrolidone respectively in ethanediol, mixing, stirring and heating while reflux. Under action of visual light, it has high degradating rate to methyl orange (increased by more than 2 times).

The invention discloses a functionalized GO (graphene oxide) and RTV (room temperature vulcanization) silicone rubber nanocomposite and a preparation method thereof. The method comprises steps as follows: firstly, the surface of GO is grafted with maleimide siloxane, GO-PTESMI is obtained, then double bonds of maleimide on grafting chains in GO-PTESMI are subjected to a hydrosilation reaction with Si-H group terminated PDMS (polydimethylsiloxane) in a solution, and GO (functionalized GO) with surface linked with PDMS grafting chains containing imide groups is prepared; then the functionalized GO is dispersed in a dispersing agent uniformly, and the silicone rubber nanocomposite with different content of functionalized GO is prepared through solution blending. According to the invention, imide bonds and polysiloxane long chains are introduced to the surface of GO, so that interface interaction force and mechanical properties of the nanocompoiste can be improved simultaneously, and the RTV silicone rubber material with capacity of playing excellent performance of GO better is prepared.

The invention discloses a preparation method of a metal oxide loaded monatomic catalyst. The method comprises the following steps: 1. mechanical ball milling: dispersing a noble metal compound in a metal oxide by using a mechanical ball milling method to obtain a monatomic catalyst precursor with the noble metal content of 0.01-5wt%; and 2, high-temperature roasting: simply roasting the monatomiccatalyst precursor obtained in the step 1 in air, and cooling to room temperature to obtain the corresponding monatomic catalyst. By utilizing the ball mill, the noble metal compound can be uniformlydistributed in the oxide carrier in a fully dispersed state, and very good conditions are created for the formation and stabilization of metal single atoms. In the preparation process, almost no lossof raw materials is caused, and the concept of environmental protection is met. The method realizes simple preparation of the metal monatomic material, has good expansibility and reproducibility, andsolves the problems of low metal content, few types, complex preparation method, high cost, large carrier loss and the like in the prior art.

The invention discloses a building outer face fire simulation apparatus, characterized by comprising: a multi-layer combustion chamber, a simulated side wall, a moving platform, an armored thermocouple probe, a heat radiation flux measuring instrument, a thermocouple patch, a glass frame, sunlight-controlled film-coated glass, simulated combustibles, a water-cooled heat flow meter, an axial fan, a DV camera, and a telescopic fireproof cornice. The multi-layer combustion chamber is formed by the lamination of two combustion chambers. The simulated side wall is combined with the wall faces with windows to form a U shaped structure. The telescopic fireproof cornice is arranged at the upper part of the lower-layer combustion chamber's windows. The apparatus of the invention can be used in the research on the fire spreading condition of the outer wall face of a high rise building under the action of an environmental wind, the research on the development characteristics of the fire flames and the smoke plume under the restrictive condition of the side wall as well as the characteristic rule of a secondary fire generated from the fire overflow at the outer side of the building into the upper layer combustion chamber, so as to provide reference to fire prevention designs for similar buildings.

The invention discloses a fishway structure and a fish-gathering method, in order to observe a fishway, research the fish gathering and conveniently and quickly gather fish. According to the fishway structure, a pool unit is served as an observing area pool; a fish-guiding plate is arranged in the observing area pool; a fish-passing clearance is formed between the fish-guiding plate and an observing wall; a first observing window is arranged on the observing wall corresponding to the fish-passing clearance; an upstream fish corral is connected between an upstream end of the fish-guiding plate and a supporting wall; a downstream fish corral is connected between a downstream end of the fish-guiding plate and the supporting wall; a fishway upstream gate is arranged between one end of the fish-guiding plate on the upstream side and the observing wall; a fish-gathering pool with an inlet is arranged outside the observing wall corresponding to the upstream side of the fish-guiding plate; a fish-gathering pool inlet gate is arranged at the inlet of the fish-gathering pool; and when the fishway upstream gate is closed and the fish-gathering pool inlet gate is opened, the fish-passing clearance is communicated with the fish-gathering pool, so that the fish-gathering can be performed.

Provided is anelectroencephalogram, myoelectricity and inertial information synchronous acquisition device. The device comprises a multi-information synchronous acquisition sensor, an embedded micro-processing system, a wireless transmission communication interface, a data receiving platform and a power module. The multi-information synchronous acquisition sensor acquires a synchronous electroencephalogram signal, a myoelectricity signal andinertial information in real time, the signalsare sent to the embedded micro-processing system through signal conditioning such as preamplification, activefiltering,post-amplification and the like, the micro-processing system conducts A/D converting and optimizing treatment on the electroencephalogram signal, the myoelectricity signaland the inertial information, and the signalsare wirelessly transmitted to the data receiving platform through the wireless transmission communication interface. The device has the advantages of multi-signal acquisition, wireless transmission, stable communication, strong expandability, portability, easy operation and the like, can be used for real-time synchronous acquisition of the electroencephalogram signal, the myoelectricity signal and the inertial information in the movement, meets the data receiving and processing requirementsof data application platforms such as PC, mobile phone and the like, and provides great convenience for human body motion posture analyses, function evaluation, brain-computer interface researches and application fields.

The present invention provides a transcriptome sequencing method, wherein primers used during a reverse transcription process from RNA to cDNA comprise a random sequence and a specific sequence, the random sequence is positioned at the 3' terminal of the specific sequence, bases from 0 to 5 exist between the random sequence and the specific sequence, the random sequence comprises 4-12 random bases, the specific sequence is a homopolymer of 5-30 bases, and the base of the specific sequence is any one selected from A, G, C and T. According to the present invention, with the design on the reverse transcription primers, the RNA having the poly (A) tail can be sequenced while the RNA with no poly (A) tail can be sequenced, the rRNA removal step is not required during the cell transcriptome sequencing, and the method is especially suitable for the sequencing on the transcriptome having the low initial RNA amount and the low cell number.

The invention discloses a clustering analysis method for soil of different regions based on x-ray fluorescence spectrums and relates to the technical field of agriculture and environment. The method comprises the following steps of: 1, acquiring soil samples of the different regions; 2, acquiring the x-ray fluorescence spectrums of the soil samples; 3, pre-processing the x-ray fluorescence spectrums; and 4, qualitatively analyzing the pre-processed x-ray fluorescence spectrums by using a mode identification method to obtain the similarity of the soil samples of the different regions. The clustering analysis method for the soil of the different regions based on the x-ray fluorescence spectrums has the advantages that: soil clustering analysis based on the x-ray fluorescence spectrums is realized; research on the soil clustering analysis is enriched; and guidance significance is provided for measurement of soil heavy metal by using the x-ray fluorescence spectrums under the influence ofsoil parent materials of the different regions.

The invention relates to the technical field of experimental devices for rock physical experiments and provides a rock anisotropy measuring clamp and a measuring method thereof. The rock anisotropy measuring clamp mainly comprises a base, a guide rail, a slider, a propelling portion, a fixing portion, a piezometer and an acoustic wave receiving device, an angle adjusting device and an angle pointer are arranged on the propelling portion, and displacement scale marks are formed on the base. The rock anisotropy measuring clamp can measure acoustic wave anisotropy features of a rock core from different angles, and physical response of rock in actual strata can be reflected really, which has guidance effect on exploiting oil-gas reservoirs.

The invention discloses a method for determining an average channel capacity of an underwater optical communication system based on partially coherent light, which mainly solves the problem that the prior art does not involve the flicker index and the average channel capacity of a partially coherent Gaussian beam in the ocean. The scheme comprises the following steps: establishing an SISO-UWOC system to obtain an average signal-to-noise ratio (SNR); obtaining a scintillation index expression (FORMULA referred) of the partially coherent Gaussian beam under the weak ocean turbulence by using theGaussian model, the refractive index structure constant and the scintillation index expression, and establishing a joint channel model to obtain a probability density function fh(h) of a joint channel attenuation factor; and bringing expressions of the (SNR), ((FORMULA referred) and fh(h) into the existing average channel capacity expression to determine an average channel capacity of the SISO-UWOC system. The method provided by the invention can determine the average channel capacity of the SISO-UWOC system by obtaining the scintillation index ((FORMULA referred) of the partially coherent Gaussian beam under the weak ocean turbulence, which can be used for a single-input single-output underwater wireless optical communication system.

The invention relates to a method of measuring and evaluating land use rate, in particular to a land use mixing degree evaluation method based on land use compatibility. The method includes: 1, determining cell dimensions and determining dimensions of square cells according to land area of an analytic object; 2, laying out the cells, expanding the cells to cover an area of residential plagues by using centers-of-gravity of the residential plagues as centers of the cells; 3, determining an analysis unit, and providing different plague definition rules for residential lands and industrial warehousing lands; 4, assigning the cells; 5, calculating MDI (mixing degree indexes), and comparing values of the MDI to a probable theoretical maximum to achieve mixing degree evaluation. Land use mixing degree of a region and merits of residential environment quality are judged by calculating the mixing degree indexes, so that land use mixing degree evaluation is not qualified but quantitated and valuable reference information can be provided for the planning and decision of urban land use.

The invention belongs to the technical field of plant genetic engineering, and particularly relates to a cotton calcium-dependent protein kinase GhCPK33 gene for regulating the verticillium wilt resistance of cotton, and applications thereof. According to the present invention, the calcium ion-dependent protein kinase GhCPK33 gene with the characteristic of verticillium wilt induced expression isscreened by inoculating Verticillium dahliae in Gossypium hirsutum Linn and analyzing RAN-Seq data at different time points, wherein the nucleotide sequence of the gene is represented by SEQ ID NO:1,and the protein sequence encoded by the gene is represented by SEQ ID NO:2. According to the present invention, through the VIGS system, the corresponding gene in cotton is silenced, Verticillium dahliae is inoculated, and the function of the gene in the verticillium wilt resistance of cotton is quickly identified; and the isolated gene provides the negative regulation effect in the verticillium wilt resistance of cotton, and by silencing the gene, the verticillium wilt resistance of cotton can be significantly improved.

The present invention discloses a core nuclear magnetic resonance T2 spectrogram relaxation time and mercury porosimetry pore-throat radius conversion method. The method comprises the steps of: processing a core, performing nuclear magnetic resonance experiment for the core to measure the transverse relaxation time T2 and the signal intensity of the nuclear magnetic resonance and calculate the signal intensity accumulated percentage; processing the core again and performing the high-pressure Hg injection experiment of the core to measure a pore-throat radius r, the mercury injection saturability Shg and a high-pressure Hg injection curve; allowing the signal intensity accumulated percentage at any moment T2 of the nuclear magnetic resonance transverse relaxation time T2 to be Sheci (i), taking the Sheci (i) as standard to perform interpolation for the high-pressure Hg injection curve to obtain a pore-throat radius r(i) corresponding to the transverse relaxation time T2(i); and respectively selecting the two end values of the transverse relaxation time T2(i) and the pore-throat radius r(i) obtained through interpolation, and performing segmentation fitting for the two end values toobtain a relation of the transverse relaxation time and the pore-throat radius at the two ends, and calculating r(i) corresponding to the rest of T2(i) by employing the obtained relation. The method is small in calculation difficulty and accurate in result, and can effectively convert the nuclear magnetic resonance T2 time to the pore-throat radius.

The invention discloses a triaxial multiple coal and gas outburst test method. The method comprises the following steps of: 1) installing a telescopic steel sleeve provided with a raw coal test specimen between a confining pressure cavity upper cover and a lower bearing plate; 2) placing various sensors in the telescopic steel sleeve; 3) arranging a sealing aluminium sheet I on a sealing taper sleeve; 4) installing a primary pressure chamber and a secondary pressure chamber at the top of a main pressure chamber; 5) monitoring variations of stresses, temperatures and gas pressures of the raw coal test specimen before and after tests; 6) pressurizing the test specimen in the main pressure chamber; 7) evacuating air inside a rubber sleeve of the main pressure chamber; 8) filling gases into the raw coal test specimen in the main pressure chamber and the secondary pressure chamber; 9) carrying out a primary outburst test; and 10) carrying out a secondary outburst test. By adopting the test method, raw coal in different sizes can be adopted to carry out coal and gas outburst tests in the triaxial stress state to study the coal and gas outburst occurrence principles more comprehensively and scientifically.

The invention discloses a combined shear connector, which comprises welding studs, wherein at least one gap is formed at the root of each welding stud in a stud rod direction; and an elastic piece is filled in each gap. The invention further provides a combined structure formed by the combined shear connector, a steel member and a concrete member, wherein the combined shear connector is in welded connection with the steel member; the concrete member is poured on the steel member; and the gap width direction of the gap is consistent with a smaller shear rigidity direction of a combined surface of the steel member and the concrete member, and orthogonal with a larger shear rigidity direction of the combined surface of the steel member and the concrete member. The combined structure has the advantages that while reliable shear rigidity of the combined surface of the steel member and the concrete member is guaranteed, shear rigidity of the combined surface is reduced; concrete tensile stress caused by concrete shrinkage and temperature changes in the combined structure of the steel member and the concrete member is effectively reduced; and initial shear rigidity of a combined surface of a prestressed concrete bridge deck slab and a steel beam is reduced and a prestress application effect is effectively increased.

The invention discloses a long-acting high-weather-resistant self-cleaning aqueous multicolor coating material, which comprises a component A and a component B, wherein the component A comprises: 35-50% of aqueous fluorocarbon emulsion, 5-10%of aqueous silicone acrylic emulsion, 5-10% of aqueous polyurethane emulsion, 10-15% of an aqueous protection glue solution, 1-2% of a pigment, 3-5% of a lead-free filler, 1-2% of an aqueous nanometer hydrophobic agent, 0.1-0.3% of a light stabilizer, 0.5-1% of an anti-freezing agent, 0.5-1% of a thixotropic agent, 15-20% of deionized water and other aqueous auxiliary agents, and the component B comprises: 40-60% of aqueous fluorocarbon emulsion, 10-15% of aqueous silicone acrylic emulsion, 5-10% of aqueous polyurethane emulsion, 1-3% of an aqueous nanometer hydrophobic agent, 0.1-0.3% of a light stabilizer, 0.2-0.5% of an anti-freezing agent, 0.2-0.5% of a thixotropic agent, 25-35% of deionized water and other aqueous auxiliary agents. The prepared coating material of the invention is good in weather resistance and excellent in self-cleaning property.

The invention discloses an automatic lung function measuring instrument. The automatic lung function measuring instrument comprises a shell, a display screen, an airflow pipe and a control circuit, wherein the display screen is arranged on the outer side of the shell, and the airflow pipe and the control circuit are packaged inside the shell; the control circuit comprises a microcontroller, a power supply, ultrasonic sensors, a storage chip and a wireless communication module, the display screen, the power supply, the ultrasonic sensors, the storage chip and the wireless communication module are electrically connected with the microcontroller, and the ultrasonic sensors are arranged at the two ends of the airflow pipe. The invention also discloses a lung function measuring method based onthe automatic lung function measuring instrument. According to the automatic lung function measuring instrument and the lung function measuring method, by introducing the sensors, accurate measurementof lung capacity information is achieved, the effects of being small and convenient, easy to operate and high in measurement accuracy are achieved, and the automatic lung function measuring instrument and the lung function measuring method are suitable for a person and a family to use; meanwhile, the lung capacity information is processed and classified, professional medical workers can conveniently analyze the information, doctors accurately judge conditions remotely, users understand body conditions, and the automatic lung function measuring instrument and the lung function measuring methodare suitable for a person and a family to use.

The invention belongs to the field of plant genetic engineering and particularly relates to an intermediate factor BnMED16 gene to regulate Sclerotinia stem rot resistance in Brassica napus and application thereof. A gene BnMEDIATOR16(BnMED16 to control Sclerotinia stem rot in Brassica napus is acquired from Brassica napus westar by isolating and cloning; a nucleotide sequence of the gene is shownas SEQ ID NO: 1; a protein sequence encoded by the gene is shown as SEQ ID NO: 2. Functional verification is performed on the gene BnMED16 herein. By increasing the expression quantity of BnMED1 in Brassica napus through genetic engineering techniques, it is possible to activate a disease-resistant signal pathway of jasmonic acid and to increase accumulation of active oxygen and expression of disease resistance-related genes; lesion area of leaf Sclerotinia stem rot of transgenic oilseed rape is decreased by 81.20%; the oilseed rape is more resistant to Sclerotinia stem rot. The gene herein has an important application prospect in enhancing the resistance of Brassica napus to Sclerotinia stem rot.