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Method for measuring gas hydrate phase balance condition
InactiveCN101377478AImprove measurement accuracyAvoid cloggingInvestigating phase/state changeGas phasePorous medium
The invention provides a method for determining the phase balance condition of gas hydrates, which mainly has the procedures: gas to be measured is caused to generate hydrates in a reaction kettle which is provided with a temperature measurement system, a pressure measurement system and an exhaust system; gas-phase space in the reaction kettle is compressed; system temperature in the reaction kettle is regulated to the temperature of the phase balance condition to be measured to exhaust the gas and lower the pressure, as well as the exhaust system is closed when the pressure in the reaction kettle rises at once because the exhaust is stopped, thus the reaction kettle is caused to become a closed system; the variation of the pressure in the reaction kettle is observed, if the pressure keeps invariant for a long time, three-phase balance is considered to be reached, at this time, the corresponding temperature and the corresponding pressure are a set of phase balance condition for the hydrates. The system temperature can further rise to the next balance temperature to be measured, the pressure variation is continuously recorded until the hydrates in the reaction kettle is completely decomposed, therefore, a series of phase balance condition data of the hydrates can be obtained. Adopting the method, the phase balance condition of the gas hydrates in a free water system or a porous media can be measured, and the measurement accuracy is high.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Preparation method of surface-modified ZTA ceramic particle reinforced steel based composite material
ActiveCN109706438AEnhanced interface bindingHigh yield strengthLiquid/solution decomposition chemical coatingAl powderNi cr alloy
The invention discloses a preparation method of a surface-modified ZTA ceramic particle reinforced steel based composite material. The preparation method comprises the steps that sensitization and activation treatment is conducted on ZTA particles, surface plating is conducted, the ZTA particles are plated with nickel and chromium to achieve surface metallization by controlling the components andthe proportion of a plating solution, the ZTA particles plated with Cr-Ni layers, Ni-Cr alloy powder and Al powder are put into a graphite mold to be made into a preform which is of a honeycomb structure through vacuum sintering, molten metal is poured by adopting a casting infiltration method, and after cooling is conducted, the reinforced steel based composite material is obtained. According tothe preparation method of the surface-modified ZTA ceramic particle reinforced steel based composite material, the ZTA particles are plated with nickel and chromium to achieve surface metallization bycontrolling the components and the proportion of the plating solution, the wet problem with a metal matrix is solved, and then the mechanical property of the composite material is improved; and meanwhile, the technology is easy to operate, the cost is reduced to a large extent, no toxicity or pollution is generated, the great potential on increasing the economic benefit and the social benefit isachieved, and the good prospect of being applied to the harsh abrasive wear condition is achieved.
Owner:XI AN JIAOTONG UNIV +1
Visualization method of time sequence relationship evolution of time sequence data
ActiveCN104866615AImprove general performanceWide application backgroundVisual data miningStructured data browsingColor intensityComputer science
The invention discloses a visualization method of time sequence relationship evolution of time sequence data. According to the method, the heights of time rectangles in transverse arrangement are used for mapping the total quantity of entities in the corresponding time point; the widths of entity rectangles in longitudinal arrangement are used for mapping the total quantity of the entities; the radii and the color intensities of entity circles are used for mapping the number of corresponding entities on the corresponding time point; the widths and the color intensities of detail arc lines are used for mapping the intensity of the time sequence relationship between the two corresponding entities; the multi-view-angle analysis and interactive exploration on the time sequence relationship evolution are realized; and the time sequence relationship evolution condition between time sequence data is more visually and clearly shown. The method has higher universality, and is applicable to wider application backgrounds and application demands.
Owner:SICHUAN UNIV
Multi-agent visual servo-coordination control method
ActiveCN101588480AWide application backgroundImprove control decision-making abilityImage analysisCharacter and pattern recognitionVisual servoingImaging processing
The present invention relates to the technical field of moving object coordination control, and particularly to a multi-agent visual servo-coordination control method. The tasks of target monitoring, tracking, grasping, etc. are completed by controlling the position and the gesture of the moving object or the moving mechanism relatively to the target or one target characteristic set through the visual information. In the technical solution, a plurality of cameras are adopted for executing real-time image collecting to the monitored scene or the controlled object, and the monitored scene or the controlled object is executed coordination control through synthesizing the information obtained by each camera and obtaining the effective control signal by the computer technology and image processing technology. According to the invention, the installing of the cameras on the measuring azimuthal angles is required. The servo signal is obtained through the processes of image processing, target identifying, etc. for executing control decision. The adding of the devices of a signal transmitter, a sensor, etc. on the controlled object is not required. Particularly the non-contact monitoring and control can be realized in a certain specific environments and dangerous environments of high temperature, high pressure, vacuum, etc. The method of the invention is a coordination control technique with wide application background.
Owner:BEIHANG UNIV
Portable telescopic spherical throwing detection robot
The invention discloses a portable telescopic spherical throwing detection robot which comprises a stander, a left driving wheel, a right driving wheel, a telescopic system and a control system, wherein the left driving wheel and the right driving wheel are fixed at both ends of the stander respectively; the telescopic system is used for stretching and contracting the left driving wheel, the right driving wheel and a supporting tail, and is arranged on the stander; and the control system is fixedly connected with the center of the stander. The robot has a certain pretending property during folding, so that the robot cannot be perceived easily; a wheel housing of the robot has a shock absorption property, so that the robot can bear impact of several-meter free fall; and the portable telescopic spherical throwing detection robot can be applied to detection and acquisition of information in dangerous environments.
Owner:BEIHANG UNIV
Method for improving binding force and tribological property of fullerene-like thin film
InactiveCN108149217AStrong wear resistanceHigh hardnessChemical vapor deposition coatingRadio frequencyPhosphine
The invention discloses a method for improving the binding force and the tribological property of a fullerene-like thin film. According to the method, by means of a plasma enhanced chemical vapor deposition technology, nitrogen, phosphine and methane are used as a gas source, and fullerene-like thin film is deposited on a substrate under the joint effects of a radio frequency power source and pulse negative bias. The method is characterized in that the process is simple, economic and efficient, the deposition temperature is low, repeatability is good, the friction coefficient is extremely low,and the improvement effect of the binding force of the steel substrate and the fullerene-like thin film is obvious. By adopting the method, the binding force and the tribological property of the fullerene-like thin film can be substantially improved, and the fullerene-like thin film is made to play the lubricating effect better. The method is applicable to the stainless steel surface and is alsoapplicable to the fields of ceramics, high polymer materials, composite materials and other materials, and has broad application prospects. Thus, the method for improving the binding force and the tribological property is huge in application potential.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Material for repairing lithium-based ceramic oral cavity and preparation thereof
InactiveCN101407375AImprove mechanical propertiesImprove bending strengthImpression capsDentistry preparationsLithiumChemical composition
The invention belongs to the field of inorganic non-metal materials and the preparation technology thereof, particularly relates to a lithium base cast porcelain oral repair material and the preparation method thereof. The chemical composition ingredients of the material are as follows (weight percent): 17-24 percent of Li2O, 10-15 percent of Al2O3, 55-65 percent of SiO2, 4-6 percent of K2O, 0.5-3 percent of Na2O, 0.5-4 percent of ZrO2 and 0.5-3 percent of colorant oxide, wherein, the mol ratio between the SiO2 and the Li2O is 1.2 to 1.8:1, the colorant oxide is one or more than one of Fe2O3, MnO2 and CeO2. The preparation method of the cast porcelain oral repair material includes the following steps of material preparing, founding, water quenching, crashing, sponging drying, molding and sintering. Compared with the prior art, the invention has the advantages of low cost, high size precision, good product repetitiveness, stable product quality, fine mechanical combination property and suitability to commercial process.
Owner:ADVANCED TECHNOLOGY & MATERIALS CO LTD +1
Road building method based on modified roller compacted concrete pavement on enzyme soil solidified base layer
ActiveCN103882788ANot easy to breakNo ruttingIn situ pavingsRoller-compacted concreteEnvironmental resistance
The invention relates to the technical field of road engineering construction, and particularly to a road building method which solves the problems that an existing road engineering construction road structure is relatively single, easy to damage, difficult in repairing, and high in building cost. The building method comprises the steps of mixing at least biological enzyme, broken stones, soil, an additive and water according to a certain ratio and rolling to form a biological enzyme soil solidified base layer and a subbase layer (enzyme soil solidified base layer for short), and then paving a cement mixing material of the biological enzyme, rubber powder and fibers modified for multiple times on the enzyme soil solidified base layer through a paving machine, rolling and forming to obtain a novel road pavement structure based on the enzyme soil solidified base layer and a multi-element repeated-modified roller compacted concrete pavement. By adopting the road building method of the novel road pavement structure, the difficulties such as high requirement on materials selected by building a road pavement, high cost, complicated construction, difficulty in maintenance, serious environment pollution and the like are solved, and the use performance of a road is greatly improved; the novel road pavement structure has the advantages of environment friendliness without pollution, resource saving, and the like, and is remarkable in economical benefits and social benefits.
Owner:HUNAN RUIBIN TECH
Method employing greedy algorithm to distribute channel resource in multichannel multi-hop wireless network
InactiveCN103634846AHigh outputAvoid confictNetwork traffic/resource managementTraffic volumeData transmission
The invention provides a method employing a greedy algorithm to distribute channel resources in a multichannel multi-hop wireless network; the method comprises the following steps: step 1, each node detects basic information of a node may be having mutual interference in data transmission, and transmission capacity of each node and the interfering nodes are respectively calculated according to the basic information; step 2, carrying out the greedy algorithm to each node; step 3, each node randomly executes the step 2 in sequence until all selectable links in the network all divided into an un-selectable link set SN or a selected set link set S1, and the selected set link set S1 is outputted as the result of the greedy algorithm. The method is very strong in realizability, has very wide application background, can demonstrate high efficiency in a common application scene, so network flow can reach an effect similar to global optima, and the method is very efficient.
Owner:SHANGHAI JIAO TONG UNIV +1
Photosensitive composite film and preparation method thereof
InactiveCN101775277AStir vigorouslyWide application backgroundTenebresent compositionsComposite filmSolvent evaporation
The invention discloses a photosensitive composite film and a preparation method thereof, which belong to the technical field of the preparation of the optical function composite material. The technical scheme of the invention is that firstly a hydrotalcite precursor is prepared, then an ion exchange method is adopted to prepare a hydrotalcite composite material co-intercalated with a Schiff-base dye and a surface active agent, and a solvent evaporation method is utilized to assemble the hydrotalcite composite material into a photosensitive film material. The composite film material utilizes the interaction between the subject and the object. The synergistic effect of interlayer water and the surface active agent makes the composite film material have photosensitive property of ultrafast response. The photosensitive composite film has wide application background. Compared with the traditional photochromic materials, the photosensitive composite film has the advantages of simple and easy preparation, friendly environment, high stability for the optothermal and long storage time. The method has simple process and good product performance, and is suitable for the industrial production.
Owner:BEIJING UNIV OF CHEM TECH
Method and system for mining concurrency of BPMN (Business Process Modeling Notation) compilation process
ActiveCN106920034AImprove efficiencyRich modeling elementsModel driven codeResourcesBusiness process managementBusiness Process Model and Notation
The invention discloses a method and system for mining the concurrency of a BPMN (Business Process Modeling Notation) compilation process. The method comprises the steps of extracting a basic relation between tasks from the compilation process according to structural characteristics, and constructing a basic relation matrix; analyzing a dependence relation between the tasks, and constructing a dependence relation matrix; constructing a dependence diagram according to the dependence relation matrix; and transforming the dependence diagram according to transformation rules to acquire a compilation process. From the angle of dependence, task pairs which have a sequential relation but not data dependence in the BPMN compilation process are changed from serial execution into concurrent execution so as to achieve a purpose of improving the compilation efficiency. The invention belongs to the field of business process model reconstruction in business process management.
Owner:SOUTHWEST FORESTRY UNIVERSITY
Anti-delay high-precision active disturbance rejection attitude control method based on fixed time differentiator prediction
ActiveCN111198570AHigh Quality Attitude ControlDealing with Time Lags EffectivelyAttitude controlAviationDifferentiator
The invention discloses an anti-delay high-precision active disturbance rejection attitude control method based on fixed time differentiator prediction, which belongs to the technical field of guidance and control. The specific scheme is as follows: the anti-delay high-precision active disturbance rejection attitude control method based on the fixed time differentiator comprises the following steps of: 1, designing a fixed time convergence differentiator and obtaining an attitude change rate observation value, 2, predicting a real-time flight state based on the fixed time convergence differentiator, 3, constructing an aircraft three-channel attitude error tracking model, and 4, constructing an active disturbance rejection control system, and generating a real-time pneumatic rudder swing instruction through the active disturbance rejection control system by utilizing the real-time flight state of the aircraft. Development and production cost of aircrafts in China can be effectively reduced, and technical support is provided for improving aviation strength in China.
Owner:HARBIN INST OF TECH
Impact hammer for hydraulic drilling rig
ActiveCN104389515AIncrease the strike frequencyHigh frequencyBorehole drivesAnchoring boltsEngineeringMechanical engineering
The invention discloses an impact hammer for a hydraulic drilling rig. The impact hammer comprises a limiting group, a valve element, a front substrate, a back substrate, a piston, a front buffer and a back buffer, wherein the limiting group is arranged on the front substrate; the valve element is arranged in the limiting group in a sleeving manner; one end of the front substrate is arranged on a power head rotating substrate of the hydraulic drilling rig, and the other end of the front substrate is provided with the back substrate in a clamping manner; the piston is arranged in inner cavities of the front substrate and the back substrate; the front buffer is arranged on the front substrate; the back buffer is arranged on the back substrate; the valve element and the piston are provided with corresponding grooves to form corresponding stress areas. The impact hammer has the advantages of simple structure, high impact frequency, large impact power, wide adaptive surface, long service life and the like and can be used on a hydraulic anchor drilling rig, while in rock-soil anchorage engineering, the drilling rig meets broken rock, sand and gravel most, and an impact rotary drilling method is one of the optimal choices.
Owner:长沙天和钻具机械有限公司
Control flow consistency detection method and device facing BPMN2.0 layout model
InactiveCN106203851AEnsure consistencyWide application backgroundResourcesControl flowComputer science
The invention discloses a control flow consistency detection method and device facing a BPMN2.0 layout model. The method comprises a step of preprocessing the BPMN2.0 layout model, ensuring a condition that parallel shunt gateways are used at all places which are directly diverted by a layout task in the layout model and selection convergence gateways are used by all places which are directly converged to the layout task, a step of classifying all shunt gateways and convergence gateways, and determining a source point and a sink point, a step of matching the gateways in the source point and the sink point one by one, and calculating the maximum flow value between the source point and the sink point, and a step of judging and positioning the unreliable structure in the BPMN2.0 layout model according to the maximum flow value. The device comprises a model preprocessing module, a source point and sink point detection module, a maximum flow value calculation module, and an unreliable structure positioning module. According to the method and the device, the problem that the control flow consistency of the BPMN2.0 layout model can not be ensured and thus the correctness of the process layout is influenced is solved.
Owner:YUNNAN UNIV
License plate defogging method utilizing image decomposition and multi-correction fusion
ActiveCN110400270AWide application backgroundEnhance texture featuresImage enhancementImage analysisQR decompositionDecomposition
The invention provides a license plate defogging method based on image decomposition and multiple correction fusion. The method comprises the following steps: decomposing a foggy license plate image into a texture layer and a structure layer, enhancing the texture layer, and carrying out defogging processing on the structure layer; defogging the structural layer, processing the image by adopting gamma correction and homomorphic filtering, finally setting the saturation and contrast of the image as fusion weights, and fusing the image according to a Laplace fusion method to obtain a defogged license plate image structural layer; and fusing the defogged structure layer and the enhanced texture layer to obtain a final defogged license plate image. The method solves the problem of difficulty in license plate recognition in a foggy weather environment, effectively improves the image definition, improves the accuracy of license plate positioning and recognition, and restores the normal and efficient work of an intelligent traffic system.
Owner:CHANGZHOU UNIV
Linear permanent magnet vernier motor decoupling control method based on improved regression support vector machine generalized inverse
ActiveCN105790661AWide range of operationsIncrease training speedElectronic commutation motor controlAC motor controlSupport vector machinePower flow
The invention discloses a linear permanent magnet vernier motor decoupling control method based on improved regression support vector machine generalized inverse. According to an invertibility principle and an Interactor algorithm, invertibility of the controlled linear permanent magnet vernier motor system is proved; input and output of the original system are sampled, after data processing, the data serve as samples for training the improved regression support vector machine, and a generalized inverse system for the improved regression support vector machine approaching the linear permanent magnet vernier motor is used; the improved regression support vector machine generalized inverse is combined with the original nonlinear system to build a pseudo-linear system, and decoupling control on the d-axis current and the primary speed of the linear permanent magnet vernier motor are realized; and on the basis of the pseudo-linear system, a PI controller is added to form a closed loop system, and the robustness of the system is improved.
Owner:常熟市诚鼎无纺布有限公司
Process mining method and system based on implicit characteristics
InactiveCN106897396AImprove mining accuracyAutomate modelingData miningResourcesPetri netAnalysis method
The invention discloses a process mining method and system based on implicit characteristics. The method comprises the steps that an original log is input, log filtering is performed to obtain a new log, the implicit characteristics in the new log are looked for, 2-degree cycles in the implicit characteristics are distinguished from a concurrent structure, the 2-degree cycles of the same type are divided through the adjoining degree between tasks, and mining is performed according to a process mining algorithm to obtain a Petri net model with a 2-degree cycle. According to the process mining analysis method based on the Petri net, the Petri net model with a short cycle is output with the log having local completeness being input.
Owner:YUNNAN UNIV
A method for increasing binding force between a fullerene-like carbon film and a steel substrate
InactiveCN108165950AReduce internal stressImprove bindingSolid state diffusion coatingChemical vapor deposition coatingCarbon filmAlloy
A method for increasing binding force between a fullerene-like carbon film and a steel substrate is disclosed. Low-temperature plasma nitriding is performed on a substrate under combined actions of aradio-frequency power supply and a pulse minus bias by adopting a plasma enhanced chemical vapor deposition technique and a low-temperature plasma nitriding technique, adopting a stainless steel sheetas the substrate, and adopting argon and nitrogen as gas sources. The method is characterized in that the method is simple in process, economical, efficient, low in nitriding temperature and good inrepeatability, and the binding force between the fullerene-like carbon film and the steel substrate is obviously increased. By adoption of the method, a situation that the fullerene-like carbon film falls under high-strength working conditions so that the fullerene-like carbon film on the steel substrate cannot achieve a lubricating effect is avoided. The method is suitable for stainless steel surfaces, is also suitable for the fields of cast iron, alloys, ceramics, polymer materials, and other materials, and has a wide application prospect, and therefore the method has a great application potential.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Method for excavating WS-CDL choreography parallelism based on PETRI net
ActiveCN105512028AImprove orchestration efficiencyWide application backgroundSoftware testing/debuggingControl flowServices computing
The invention belongs to the technical field of Web service composition in the service computing paradigm, and discloses a method for excavating WS-CDL choreography parallelism based on the PETRI net. The method for excavating WS-CDL choreography parallelism based on the PETRI net is carried out according to the following steps: step 1, WS-CDL choreography is used as an input file, the PETRI net is used to describe the WS-CDL choreography, and the WS-CDL choreography is converted to choreography defined based on the PETRI net; step 2, from the point trace equivalence, whether the choreography defined based on the PETRI net and the WS-CDL choreography satisfy the trace equivalence is examined, if the choreography defined based on the PETRI net and the WS-CDL choreography do not satisfy the trace equivalence, the conversion in the step 1 is considered to be unsuccessful, the step 1 is returned, and the PETRI net generated by the conversion process is modified; if the choreography defined based on the PETRI net and the WS-CDL choreography satisfy the trace equivalence, the conversion in the step 1 is considered to be successful, and a step 3 can be carried out; step 2, control flow relation and interaction relation of the choreography defined based on the PETRI net are analyzed, the dependence relationship is calculated, and a dependence graph is constructed in order to search possible parallelism and interaction in the choreography.
Owner:YUNNAN UNIV
Application of PKC enzyme inhibitor in preparing drug for improving and protecting islet beta cell functions
InactiveCN110339363AEnhanced inhibitory effectWide application backgroundOrganic active ingredientsMetabolism disorderBeta cell apoptosisBeta-cell Function
The invention discloses application of a PKC enzyme inhibitor in preparing a drug for improving and protecting islet beta cell functions. Through a series of experiments, it is verified that the PKC enzyme inhibitor has a good inhibitory effect on THAP-induced islet beta cell apoptosis, can significantly inhibit the expression of TXNIP and can effectively inhibit the expression of mRNA and proteinwhich are related to endoplasmic reticulum stress. The PKC enzyme inhibitor can provide a good candidate drug for clinical treatment of diabetes caused by the apoptosis and decrease of islet beta cells, and has a very good application prospect.
Owner:SOUTHERN MEDICAL UNIVERSITY
Fast curing resin system and preparation method
The invention provides a fast curing resin system, belonging to the technical field of preparation of epoxy resin systems. The resin system at least comprises epoxy resin, a curing agent and an accelerant, wherein the ratio of the epoxy equivalent of the epoxy resin to the active hydrogen equivalent of the curing agent is equal to 1.0 / 0.8-1.0 / 1.2; the accelerant is a polyol, and the content of theaccelerant is 0.31-3.9%. The epoxy resin system can realize rapid and uniform curing cross-linking at a specified temperature, and the cured product has excellent mechanical properties and can be used for preparing fiber-reinforced resin matrix composite automotive parts and fiber-reinforced epoxy resin composite materials. The polyol is used as the reaction accelerant of the epoxy resin and thecuring agent, so that the reaction rate of the epoxy resin system is accelerated, the molding cycle is shortened, and a better effect is achieved.
Owner:BEIJING UNIV OF CHEM TECH
Tungsten oxide alloy material and preparation method thereof
InactiveCN112226702AEasy to useEasy to processMaterial nanotechnologyVacuum evaporation coatingCrack resistanceWear resistance
The invention discloses a tungsten oxide alloy material and a preparation method thereof, and relates to the technical field of alloy materials. The tungsten oxide alloy material is composed of 0.3%-0.5% of C, 1.5%-2.0% of B, 5%-10% of Ni, 5%-10% of W, 0.5%-1.5% of La, 2.0%-2.5% of Ta, 2.0%-2.5% of Re, 2.0%-2.5% of Mo, 2.5%-5% of Ti, 1.0%-1.5% of Y, 5%-10% of K,5%-10% of V and the balance iron. According to the tungsten oxide alloy material and the preparation method thereof, due to the microalloying effect of elements such as Ni, Cr, W and Re, the wear resistance and the corrosion resistanceare greatly improved, the thermal shock resistance and the crack resistance are improved, meanwhile, the hardness is proper, machining is facilitated, the yield can be increased, and resource consumption is reduced.
Owner:蓬莱市超硬复合材料有限公司
Application of Gypensapogenin A to preparing drugs for treating yellow fever virus infection
ActiveCN102872057AEffective preventionEffective therapeuticOrganic active ingredientsAntiviralsDiseaseYellow Fever Virus Infection
The invention discloses application of Gypensapogenin A to preparing drugs for treating or preventing yellow fever virus infection. Gypensapogenin A is capable of effectively inhibiting the proliferation of yellow fever virus, has little toxicity to cells, can be further developed as the drugs for treating diseases caused by virus infection and has extensive application prospect. The application of Gypensapogenin A to preparing the drugs for treating the yellow fever virus infection, disclosed by the invention, is firstly published, the framework type is brand new, the activity of inhibiting the yellow fever virus is unexpectedly strong and the probability of giving any revelation by other compounds does not exist, so that prominent substantive features are provided and a remarkable progress in preventing and treating the yellow fever virus infection is made at the same time.
Owner:南通三聚知识产权服务有限公司
A kind of preparation method of surface modified ZTA ceramic particles reinforced steel matrix composite material
ActiveCN109706438BEnhanced interface bindingHigh yield strengthLiquid/solution decomposition chemical coatingAl powderGraphite
The invention discloses a preparation method of a surface-modified ZTA ceramic particle reinforced steel based composite material. The preparation method comprises the steps that sensitization and activation treatment is conducted on ZTA particles, surface plating is conducted, the ZTA particles are plated with nickel and chromium to achieve surface metallization by controlling the components andthe proportion of a plating solution, the ZTA particles plated with Cr-Ni layers, Ni-Cr alloy powder and Al powder are put into a graphite mold to be made into a preform which is of a honeycomb structure through vacuum sintering, molten metal is poured by adopting a casting infiltration method, and after cooling is conducted, the reinforced steel based composite material is obtained. According tothe preparation method of the surface-modified ZTA ceramic particle reinforced steel based composite material, the ZTA particles are plated with nickel and chromium to achieve surface metallization bycontrolling the components and the proportion of the plating solution, the wet problem with a metal matrix is solved, and then the mechanical property of the composite material is improved; and meanwhile, the technology is easy to operate, the cost is reduced to a large extent, no toxicity or pollution is generated, the great potential on increasing the economic benefit and the social benefit isachieved, and the good prospect of being applied to the harsh abrasive wear condition is achieved.
Owner:XI AN JIAOTONG UNIV +1
Analytical method for biochemical sensors based on tandem LPWG
InactiveCN104596958BHigh sensitivitySmall sizeColor/spectral properties measurementsQuantitative determinationCoupling
The invention discloses an analysis method of a biochemical sensor based on a series LPWG. By utilizing the coupling characteristics of the LPWG, light in a certain bandwidth range centered on the resonant wavelength in the incident light wave is coupled into the measured envelope through the LPWG1, and then passes through the LPWG2. This part of the light is coupled into the waveguide core layer, and the output is interfered with the fundamental mode propagating in the same direction in the waveguide core layer. When the measured substance changes, the resonance wavelength in the output spectrum will shift, and the measured substance concentration can be calculated by detecting the offset. Analyze the absorption spectrum signal of the liquid in the output spectrum to realize the characterization of the measured substance. On the one hand, the method of the invention solves the problem that traditional biochemical sensors rely on a specific sensitive film with high price and a single detection index to be qualitative; limit problem.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Application of STCH to preparation of functional product for resisting flavivirus infection
ActiveCN113209275AGood application prospectEnhanced inhibitory effectPeptide/protein ingredientsAntiviralsMolecular biologyGenus Flavivirus
The invention belongs to the field of biological medicine, and discloses an application of a stress chaperone molecule (STCH) to preparation of a functional product for resisting flaviviruses. By flavivirus inhibition experiments, the invention proves that an STCH overexpression vector has a remarkable inhibition effect on the flaviviruses, which shows that the STCH overexpression vector is expected to prevent and treat diseases caused by a flavivirus infection when being applied to preparation of a drug for resisting the flavivirus infection.
Owner:大汉生物科技(广东)有限公司
Application of inhibition of SOCS3 expression through lentivirus-mediated RNA interference in preventing and controlling insulin resistance in diabetics
InactiveCN107384918AImprove insulin resistanceBroad application background and economic valueOrganic active ingredientsMetabolism disorderInsulin receptor substrateSOCS3
The invention discloses an application of inhibition of SOCS3 expression through lentivirus-mediated RNA interference in preventing and controlling insulin resistance in diabetics. According to the invention, on the basis of a lentiviral vector-mediated RNAi technique, an SOCS3 gene silenced T2D rat model is established and experimental detection is implemented, and it is discovered that by inhibiting an SOCS3 gene, expression of IRS1 (insulin receptor substrate 1) can be improved, serine phosphorylation of the IRS1 can be reduced, insulin sensitivity of a T2D rat can be improved and an insulin resistance degree can be relieved. Therefore, a new idea is provided for prevention and control of human diabetes and experimental basis are offered for searching of effective treatment measures.
Owner:张旭
A Robust Filtering Method Against Parameter Uncertainty and Observation Loss
ActiveCN103575278BImprove robustnessWide application backgroundNavigational calculation instrumentsMathematical modelAlgorithm
The invention provides a robust filtering method aiming at parameter uncertainty and observation loss. The robust filtering method comprises the following steps: 1, describing a question through a mathematical model, and modeling of norm-bounded parameter uncertainty and observation loss; 2, giving a filter model of undetermined parameters according to the mathematical model established in the step 1; 3, performing augmentation on an original state equation, solving a state covariance matrix after the augmentation, and constructing a novel state vector; 4, searching for an estimation error covariance of the original state vector according to the state covariance matrix after the augmentation in the step 3; and 5, setting the filter parameters, so that a minimum value is obtained at the upper bound of the estimation error covariance obtained in the step 4. Therefore, minimization of the upper bound of the state estimation error covariance is realized under the condition that a filter has the norm-bounded parameter uncertainty and observation loss.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Application of Lycojaponicumin C in preparation of medicines for treating yellow fever virus infection
InactiveCN103463067AEffective preventionEffective therapeuticOrganic active ingredientsAntiviralsLycojaponicumin CDisease
The invention discloses an application of Lycojaponicumin C in the preparation of medicines for treating or preventing yellow fever virus infection. The Lycojaponicumin C can be used for effectively inhibiting the proliferation of yellow fever virus, has very low toxicity on cells, can be further developed into the medicines for treating diseases caused by the virus infection and has wide application prospects. The application of the Lycojaponicumin C in the preparation of medicines for treating the yellow fever virus infection is disclosed for the first time. As the skeleton type of the Lycojaponicumin C belongs to a brand-new skeleton type, the Lycojaponicumin C has unexpected strong inhibitory activity on yellow fever virus, and the possibility that other compounds provide revelation does not exist. The Lycojaponicumin C has prominently substantial characteristics and meanwhile has remarkably progressive significance when being used for preventing or treating the yellow fever virus infection.
Owner:重庆市黔江区阿蓬科技企业孵化器有限公司
A method for eliminating chopping ripple and an analog-to-digital conversion circuit for realizing the method
InactiveCN103023502BThe effect of weakening the precision of the conversionSimple designAnalogue-digital convertersIntegratorLow-pass filter
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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