60 results about "Natural science" patented technology

This invention implements a system for automatic recognition of human-assisted drawings, in a plurality of forms, be they hand-drawn on paper, marker board, with a stylus on a computer, made with a mouse, stylus, finger or other instrument on a personal computer, tablet computer, smart telephone or other medium. At the core of the invention is a pattern recognition engine, aimed at recognizing the graphical objects, handwritten text, equations or interconnects in the input image, and interpreting the significance of their relative association. The apparatus offers error correction, vector representation of the input sketch, as intermediate output, along with the recognized patterns, arranged in a hierarchical data structure, ready to be passed on for mining or assessment. The recognized patterns can be associated with mechanical design, electrical circuit design, mathematics, biology, physics, chemistry, computer science, natural sciences, medicine, or any other science- or engineering-based discipline making use of human-assisted drawings.

In order to solve the high-speed cancer excited state problem, a biological retarder is needed. Cancer energy is converted into intramolecular transfer or other vibrational state transfer through collision. By means of the nucleus retarder principle, a neutron and a retarder atomic nucleus are subjected to collision so that the speed can be decreased, and the retarder which does not absorb neutrons and does not react with neutrons is selected. An important task of the cancer biology and even the natural science is that which material can bear a cancer nuclear fission biological retarder. According to repeated experiments, various safety factors are synthesized, and finally a biological moderator is correctly selected through a successful experiment. Bifidobacterium is free of toxicity and harm to a body, and the biological retarder can be ideal for treating a cancer. In the future, more microorganism retarders will be produced, the biological retarder is used for decelerating tumors, a proper amount of deceleration molecular nuclear energy can be used as senile cell addition nuclear energy, and the biological retarder gives power to biological science and will play an indispensable critical role.

This invention relates to methods and devices for the production of micro-structured substrates and their application in natural sciences and technology, in particular in analysis and detection systems based on artificial and biological lipid membranes. The structure is preferably a hole or a cavity or channel and is obtained by spark perforation. Energy, preferably heat, is applied to the region to be structured so as to reduce the amplitude of voltage required and / or soften the material. The electrical parameters of the spark perforation are feedback-controlled.

The invention provides an automatic division method for pulmonary parenchyma of a CT image. According to the automatic division method, the CT is divided through carrying out a random migration algorithm for two times to obtain the accurate pulmonary parenchyma; in the first time, the random migration algorithm is used for dividing to obtain a similar pulmonary parenchyma mask; and in the second time, the random migration algorithm is used for repairing defects of the periphery of a lung and dividing to obtain an accurate pulmonary parenchyma result. Seed points, which are set by adopting the random migration algorithm to divide, are rapidly and automatically obtained through methods including an Otsu threshold value, mathematical morphology and the like; and manual calibration is not needed so that the working amount and operation time of doctors are greatly reduced. According to the automatic division method provided by the invention, a process of 'selecting the seed points for two times and dividing for two times' is provided and is an automatic dividing process from a coarse size to a fine size; and finally, the dependence on the selection of the initial seed points by a dividing result is reduced, so that the accuracy, integrity, instantaneity and robustness of the dividing result are ensured. The automatic division method provided by the invention is funded by Natural Science Foundation of China (NO: 61375075).

The invention provides a method for mathematical expression retrieval based on hierarchical indexing. The method is realized based on indexes which are established in advance. Establishment of the indexes comprises that a mathematical expression of a LaTeX format is analyzed, a Hash value hierarchical structure tree of the expression is formed, and a Treap tree is constructed by inserting knots to form a KP mapping index layer and a reverse index layer. During the retrieval, the mathematical expression of the LaTeX format input by a user is analyzed in the same manner, the Hash value hierarchical structure tree is formed, and then the retrieval is conducted in the KP mapping index layer and the reverse index layer of the indexes so as to realize the accurate retrieval or the isostructural retrieval of the mathematical expression. The method for the mathematical expression retrieval based on the hierarchical indexing provided by the invention adopts a double-layer indexing structure, gives consideration to information integrity of the mathematical expression and efficiency and functions of the retrieval, has abundant modes of the retrieval and obtains high retrieval efficiency. The method for the mathematical expression retrieval based on the hierarchical indexing provided by the invention is funded by the Natural Science Foundation of China (Approval No. of Project: 61375075).

A space-borne laser radar detection system for detecting marine atmosphere parameters comprises a tunable laser subsystem, a reception optical subsystem, a signal processing subsystem, a control and data processing subsystem, wherein the tunable laser subsystem generates 935nm, 761nm laser and irradiates the laser to the atmosphere above a sea, the reception optical subsystem separates two optical signals of different wavelengths from backward scattering signals after the laser is irradiated to the atmosphere, the signal processing subsystem carries out photoelectric conversion, amplification and analog-to-digital conversion on optical signals, and the control and data processing subsystem calculates marine atmosphere temperature, humidity and density according to the digital signals sent by the signal processing subsystem. Compared with the prior art, the space-borne laser radar detection system can detect atmospheric temperature, humidity, density parameter distribution of the atmosphere above a sea, and plays an important role for researching meteorological environment above a sea, climate change, land-ocean air steam transmission, atmospheric flow and other natural science rules and improving offshore work and sea-crossing flight.

An eddy current heating type pipeline defect infrared imaging testing device and a test method belong to the field of nondestructive testing. The device is composed of an induction heating unit, an image acquisition unit and an image processing unit. A measured buried pipeline undergoes non-contact local micro-heating by the utilization of an eddy current heating probe of the induction heating unit, the buried pipeline will generate eddy current to heat pipe wall and radiate outwards infrared rays. Under the assistance of an infrared laser pointer, an infrared thermal imager is directed at the measured pipeline to carry out image acquisition. Information of the acquired images is transmitted to a computer through an image transmission interface. After the image information is processed by the computer, whether the measured pipeline has defects and defect shape and actual size are calibrated. The invention is funded by the program of National Natural Science Foundation of China (51365019). The testing device can be cooperatively used along with a pipeline detection robot and is used for real-time online detection of steel structural buried pipelines.

The invention provides a novel intelligent terminal and a shell connected with the intelligent terminal. A smart phone uses an APS picture, 135 specification, 120 specification or large picture or other specifications of light sensing elements for imaging, an intelligent terminal uses a switching lens or a special lens for shooting, a smart phone performs shooting and photographing via an externallight sensing element and an external lens, the switching lens is arranged on a smart phone, a tablet computer and other smart devices for directly using the switching lens to shoot, and a second lens is arranged at the outside of the interface of the switching lens of the intelligent device, by means of the technical scheme, the double lenses take pictures at the same time or one lens performs shooting while the other lens performs photographing, so that the photographing and shooting are stored as EXIF information. The technical problem of poor imaging of the smart phone is solved, and theshooting requirements of natural science, aeronautics and astronautics, military, industrial, medical, film and commercial shooting are met.

The invention relates to a measurement method of a seepage flow movement rule and belongs to the field of research on basic theory of natural science and vadose zone hydrology. The method comprises the following steps: carrying out field measurement of seepage-in flow and seepage-out flow of stressed section, downstream water level height of the section, upstream water level height of the section, downstream water level distribution area of the section, seepage-out and seepage-in section areas, virtual degree or solidity of the section; then building a relation equation among the quantities according to an opposite and uniform action rule equation set; and finally solving unknown quantities via an equation solving method so as to achieve the purpose of solving practical problems or prediction problems. The measurement method of the seepage flow movement rule has the beneficial effects of showing the theory, the formula and the method for researching, calculating and measuring the seepage flow rule, which conform with the objective laws, enabling the scientific research, experiment and actual measurement of the seepage flow to really embark on a scientific, systematic, theoretical, practical and programmed way, ensuring that the measurement work of the seepage flow rule is not detoured again, and saving manpower, material resources and financial resources.

The invention discloses a multifunctional intelligent echoscope, which comprises a sound picking assembly, a sound guide pipe and a sound listening tube, wherein the sound picking assembly is connected with the sound listening tube through the sound guide pipe; the sound picking assembly comprises a casing; a controller, a sound detection module, a heart rate detection module, a body temperature detection module, an electrocardiogram detection module and a power supply module are arranged in the casing; the sound detection module, the heart rate detection module, the body temperature detectionmodule, the electrocardiogram detection module and the power supply module are respectively connected with the controller; the controller is also connected with a wireless control module and the storage module; and a blood gas saturation degree detection assembly is detachably arranged on the surface of the casing. The multifunctional intelligent echoscope can be used for efficiently detecting various health index data of the human body; and the data can be conveyed to the outside through the wireless transmission module. The technology is subsidized by National Natural Science Foundation ofChina (81770512) in 2017 and Shenzhen Health and Family Planning Commission Famous School Famous Schoolmaster and Famous Teacher Project (SZSM201812055) in 2018.

The invention discloses a bird control system and a bird control method based on a virtual reality robot remote operation technology. Under the conditions that a bird is not injured and the living habit of flying birds is not affected to the maximum extent, the flying direction and the path of the flying birds are controlled, and the bird control system can work for a log time and stably and can be repeatedly used for multiple times; the bird control system and the bird control method can be used in the fields of natural science researches, disaster rescue, environment friendliness, militaries and the like and are used for completing tasks such as geographic data detection and 3D solid figure drawing.

The invention belongs to the fields of social data analysis and visualization, relates to the technologies of social network analysis, information analysis, information retrieval and filtering and sorting, and discloses a multi-mode-supported retrieval of leading figures in academic fields and a visualized navigation system. The retrieval of leading figures in the academic fields and the visualized navigation system include 1 data acquisition and processing, 2 multi-mode retrieval and 3 visualized representation of search results and relevance among the search results with an appropriate visualized placement algorithm applied, wherein 1 the data acquisition and processing mainly relate to author correlating validation in a collecting stage and relates to analysis and extraction of data internal relevance; 2 the multi-mode retrieval includes (1) retrieval based on author names, (2) retrieval based on fields and (3) retrieval based on contents, wherein (1) the retrieval based on the author names copes with conditions that a user has certain impression of the name an author but do not remember the name of the author very clearly, (2) the retrieval based on the fields which are divided according to the subject division system of international natural science foundation can retrieve the author with high influence, and (3) the retrieval based on the contents can retrieve relevant papers and authors of the papers by searching the contents and the aim is to collect the relevant authors to meet the needs of learners for knowledge; and 3 the search results and the relevance among the search results are visually presented with the appropriate visualized placement algorithm applied.

The invention discloses a sound transmission teaching aid, comprising a container, an injector and a buzzer. An opening at the upper part of the container is sealed by a rubber plug; the pinhead of the injector is inserted into the container by the rubber plug; the buzzer is placed into the container; a lead connected with the buzzer extends out from the container; and the lead is provided with a power source and a switch connected with the buzzer in series. The invention provides the teaching aid especially used for airborne sound teaching and used for teaching preschool children and junior students natural science; during using, the switch is turned on, the buzzer is started to make sound; the injector is drawn outwards to extract a part of air in the container; because the air is reduced, the bumming of the buzzer is reduced; the students can perceive the transaudient capability of the air vividly and intuitively, and the invention can interest the students and is beneficial for improving the practical ability of the students.

The invention provides a mathematical expression similar distance measurement method. The method comprises the following steps of performing compatibility retrieval on query expressions in a database to obtain a plurality of result expressions; analyzing the query expressions, replacing the query expressions in the result expressions with unified identifiers ''\replace'', and analyzing the result expressions after replacement; constructing a hesitant fuzzy set corresponding to each expression according to an analytic result of the expression; and calculating a similar distance and similarity between the result expression and the query expression according to the constructed hesitant fuzzy set. Through the method provided by the invention, the sorting of mathematical expression search result sets is closer to the query expression, so that an arrangement sequence of retrieval results seen by users can better reflect demand degrees of the users to the results. The method is funded by the national natural science foundation (a project approval number: 61375075).

The invention discloses a spatial data storage organization method and system in consideration of load balancing and disc efficiency. The method comprises the steps of counting an average access concurrency degree according to times of spatial data files accessed and requested by a user; distributively storing the spatial data files to a distributed geographical information system server according to the load balancing requirement of a distributed geographical information system and the average access concurrency degree; calculating the average access continuity of the spatial data files according to the average access concurrency degree and an average access spacing distance of the spatial data files; and carrying out consecutive storage organization on the spatial data files in the same server according to the average access continuity of the spatial data files. According to the spatial data storage organization method and the spatial data storage organization system in consideration of load balancing and disc efficiency, effective batch reading of continuous accessed space data is realized and the storage efficiency of the geographical information system is guaranteed while the load balancing requirement is satisfied. The project is completed by funding of Natural Science Foundation of China (Fund No: 41671382, 41271398).

The invention discloses a visual content management method and system. The system comprises a cloud service system, a management system and a resource management system which are in communication connection. According to the visual content management method and system, display and play control of content resources formed by combining picture, video and text contents supporting different themes canbe displayed. The method is suitable for interactive display of digital resources such as digital blog, knowledge encyclopedia, humanistic history, natural science and political culture, and can alsosupport school autonomous propaganda contents such as campus culture propaganda. In addition, an appropriate standby server can be selected according to the type of the abnormal server, the optimal requirement of the system is met, a user can conveniently know and know the physical address where the abnormal server is located and the abnormal type of the server in time through the visualization mode, and the abnormal recovery efficiency of the server is improved.

The invention belongs to the technical field of satellite remote sensing, and particularly relates to a satellite remote sensing image atmospheric correction spectral analysis method. Atmospheric correction is performed according to spectral information of the image completely with no requirement for equivalent precision of the image topographic relief area and the flat area after DTM correction or synchronous atmospheric measurement data or ground object reflectivity measurement data, and the correction precision is obviously better than that of the image corrected by the present popular atmospheric correction software. The output atmospheric image and the ground object image are reflectivity images and can be synthesized into true color images and used for quantitative analysis. Landform information and BRDF information of the original image are completely reserved. Partitioned correction is performed on a huge image and the images are spliced into a complete image without lapping defect, and general atmospheric correction software can be developed. The satellite remote sensing image atmospheric correction spectral analysis method is the scientific achievement of the China's national natural science fund ("remote sensing image atmospheric correction spectral vector analysis model", the grant number: 41371394) project.

The invention relates to a natural sciences learning device, especially to a natural sciences learning device for early education of kids. The natural sciences learning device comprises a base plate, a left side plate, a first circular disk, a trapezoidal block, an L-shaped guide rod, a top plate, a left bearing seat, a slide rail, an upper bearing seat, a slide block, a tooth bar, a second connecting rod, a second rotating shaft, a second bevel gear, a U-shaped support, a stay wire, an artificial butterfly, a first rotating shaft, a first gear, a fixed block, an elastic component, an artificial flower, a contact wheel, an L-shaped support rod, a motor, a first conveyor belt, a second circular disk and the like; and the left side plate, the first circular disk, the trapezoidal block and the L-shaped guide rod are fixed on the base plate from left to right successively. The learning device enables a good natural sciences learning effect of the kids, is high in learning efficiency and improve the learning interests of the kids.

The invention belongs to the technical field of organic chemistry, and discloses a preparation method of a visible-light response high-activity TiO2 composite photocatalyst. The method is characterized in that the adjustment and control of the structure of a Dawson structure substituted HPC@TiO2 molecular imprinting photocatalyst and the improvement of PPCPs degrading performance are treated as context objects; rare earth (transition) metal substituted counter cation visible-light response HPC is synthesized by methods such as the double decomposition method; the molecular imprinting TiO2 is prepared by methods such as a sol-gel method; a Dawson structure substituted HPC@TiO2 molecular imprinting photocatalyst is constructed by methods such as an impregnation method; FTIR and the like areused for representation; and typical PPCPs p-acetamidophenol, ethyl p-hydroxybenzoate and the like are degraded by visible light to observe the photocatalytic activity of a probe in reaction. The support number of the method in Natural Science Foundation of China is 51562016.

The invention discloses a novel aqueous solution sprayable trimethylene dioxythiophene polymer blue-transparent electrochromic material, a preparation method thereof, a component and an application. The electrochromic material can be sprayed to the surface of ITO (indium tin oxide) glass in an aqueous solution form, and then acid treatment is performed to form a film. The electrochromic material is low in driving voltage, transparent in oxidation state, high in contrast, short in response time and applicable to electrochromic devices such as an intelligent window and a display. The material issubsidized by an Anhui university natural science research project (KJ2017A482, KJ2016JD16), an Anhui university excellent youth talent support planned project (gxyq2017023), an advanced building material Anhui key laboratory open topic (JZCL201602ZZ) and a university student innovation business startup training planned project.

The invention relates to a simulated annealing-based nucleic acid structure prediction method. According to the method, a random point matching list and consecutive matching numbers corresponding to each group of random points are determined on the basis of a minimum stem region number and an in-ring minimum base number; stem region candidates are generated; effective matching can be realized faster on the basis of the idea of simulated annealing; and an energy evaluation function is introduced to improve the accuracy of the prediction of RNA molecule pseudoknots; and therefore, time complexity and space complexity are decreased, and the accuracy of the prediction of the RNA molecule pseudoknots is improved. The invention is funded by the national natural science foundation of China (61472293).

The invention relates to an innovatory production method for using a ground cover plant sedum sarmentosun bunge which is difficult to be produced into turf rolls to plant the turf rolls by depending on nonwoven fabric. By the method, weight of the turf rolls per unit area can be lowered, and sedum grass can be ensured to be firmly and closely fixed on the nonwoven fabric in the process of transplanting and transporting. The method combines ecological habits of sedum sarmentosun bunge, a method for promoting plant side root development and a natural science principle that plant root systems are hydrotropic, so that side root systems under the sedum sarmentosun bunge turf roll nonwoven fabric is well developed, and the problems that weight per unit area is heavy and the grass frequently scatters, sheds and displaces in the process of carrying are solved. The turf rolls have the advantages of high resistance, needless of trimming, freeness of bird absorbing, fire prevention, drought resistance and simplicity and convenience in management, and are suitable for afforestation of urban roofs and closed and depopulated areas like factories and airports and wide in application range.

Disclosed is an intelligent ecological IOT (Internet of Things) suite teaching aid. The intelligent ecological IOT suite teaching aid comprises an intelligent ecological enclosure, a planting groove,an artificial intelligence voice module, a sensing module, a light module, a ventilation module, a control module and an education APP terminal, wherein the artificial intelligence voice module, the sensing module, the light module and the ventilation module are arranged in the intelligent ecological enclosure, the artificial intelligence voice module is used for voice prompt, the light module isused for supplementing light, the ventilation module is used for adjusting the concentration of oxygen and carbon dioxide, and the education APP terminal is used for receiving processing data and video live broadcasts. The control module comprises an intelligent gateway, a cloud server and a routing device, wherein the intelligent gateway is in communication connection with the cloud server through the routing device, and the cloud server is in wireless communication connection with the education APP terminal. The intelligent ecological IOT suite teaching aid enables students to observe the growth state of plants in classrooms and at homes, thereby deepening their understanding of natural science and developing their abilities of operation, independent design experimenting and observing research problems.

The invention discloses a natural science popularization device based on image interaction. A control unit is respectively connected with a display unit, a gas sensing unit and a touch screen. The control unit controls the display unit according to an airflow detection signal of the gas sensing unit to display a preset image. The control unit controls the display unit according to a detection signal of the touch screen to display a preset image. Through the above optimization-designed natural science popularization device based on image interaction, structure design is reasonable, a participant realizes interaction with the images through an air blow and a touch, people are enabled to intuitively feel reaction of a plant in a natural world after the wind blow and the touch indoors, and interestingness of science popularization is increased.

The invention provides a similarity measurement method for evaluating languages based on a mathematical expression. According to the method, an interval value hesitant fuzzy language attribute set based on the mathematical expression is constructed, the preference degree relation among the attributes is found, the weight possibility probability value of each attribute is determined, the similarity between the result expression and the query expression is calculated, and finally the required mathematical expression retrieval result is displayed to a user. According to the method, starting from elements forming the mathematical expression, the interval value hesitant fuzzy language set specially used for expression query is formed by utilizing operators, operands and query keywords, so that the uncertainty and fuzziness in the formula can be expressed to the maximum extent; the problem of one-sidedness decision caused by the fact that a single determined value represents a certain object is avoided, the method is closer to the expression and description mode of people for objects, and the decision effect is more credible and flexible. The invention is subsidized by natural science fund of Hebei Province (project approval number: F2019201329).

The invention discloses a novel technology for making a soil monolith for exhibition and teaching, which belongs to the field of soil specimen making. The technology includes the following steps: S1,determining the specification and shape of a specimen according to the soil property and the teaching or exhibition need; S2, carrying out physical finishing and drying of a whole original soil profile; S3, carrying out moth prevention and impregnation treatment; S4, selecting and sticking a specimen bearing backboard; S5, carrying out surface treatment of a rough specimen; and S6, carrying out specimen stereotyping and moisture-proof and oxidation-proof treatment. The specification and shape of the specimen made in the invention can be determined according to the needs of experimental teaching of soil courses and popularization of common knowledge of natural sciences, the specimen can directly reflect the structure and hierarchy of soil profiles, and the physical and chemical properties of soil basically remain in the original state. The specimen is portable and easy to transport and store, and is suitable for long-term use. The specimen can be displayed arbitrarily in classrooms andexhibition halls, including being placed uprightly, obliquely or horizontally.