93 results about "Scientific study" patented technology

The invention discloses a plasma free nucleic acid extraction kit and application thereof, wherein the kit comprises (1) magnetic bead pyrolysis combination solution; (2) a first cleaning solution; (3) a second cleaning solution; (4) an elution solution. By using the plasma free nucleic acid extraction kit provided by the invention, the free desoxyribonucleic acid in the plasma can be fast extracted; in addition, the use is fast, simple and convenient; the centrifugation is not needed; once mass extraction only needs half an hour; the obtained nucleic acid has high quality; when the obtained nucleic acid is used for subsequent sequencing and detection, the result is accurate and reliable; the complete application to the existing noninvasive prenatal genetic testing technology can be realized; the important significance is realized in aspects of scientific study and clinic detection.

The invention discloses a special spectrum simulation illumination device for plant cultivation and a simulation method. In the invention, the design idea of single light source is broken through; a hexagonal extensible light source array is designed based on LED combination; control power supply is realized by signal chip computer control and inductance switch stabilized current; the configuration parameter of a light source is determined by a monochrome calibration method; and the simulation of a special spectrum is realized by a nonlinear least squares curve fitting. The device has the advantages of special spectrum simulation, light-reliable-efficient performances, convenient extension and strong commonality. The simulation test result shows that the invention can pointedly and flexibly simulate the visible light absorption spectrum of special plants, solves the technical problem that how to supply light efficiently and flexibly for biological culture and provides a new technical solution for biological scientific study, biological culture and fresh-keeping in special environment and the like.

A reality-based hypothetical is developed and provided to a set of training participants. The reality-based hypothetical is a fact pattern describing an original lawsuit involving a set of real life scientific studies, data, witnesses, and issues that have never been litigated where only the claims, plaintiff, and defendant are fictitious is a training device for teaching a set of target legal and science objectives, such as determining the scientific integrity of proposed scientific evidence and understanding the scientific evidence as a whole. The “reality-based hypothetical” is developed to provide practice in performing problem solving techniques to determine the “scientific integrity” of proposed scientific evidence and scientific testimony. One or more dialogue sessions are provided to gather information necessary for making a determination on the admissibility of the scientific study. A decision on the admissibility of the scientific study can be rendered during each dialogue session, which occurs at designated segments during the training.

The invention discloses a culture medium for 3D culture of lung tissue. The culture medium comprises the following components: B27, N-acetylcysteine, an EGF, Noggin, R-spondin 1, A83-01, FGF10, Nicotinamide, Y-27632*, WNT3a, Glutamax, N2 and Gastin. The culture medium disclosed by the invention is appropriate in nutrient component, tissue cell specificity and stem cell specificity can be effectively maintained for lung tissue and lung cancer tissue, then lung tissue/lung cancer tissue organs with stable inheritance and biological functions can be formed, and scientific study requirements can be met.

The invention discloses a laser crystal with scandium stone garnet of high effective radio resistant Yb3+ sensitizing Er3+, which is characterized by the following: setting molecular formula of the crystal as Yb3+, Er3+:A3Sc2B3O12[A=Gd, Y, Lu; B=Ga, Al]; setting Yb3+ and Er3+ as A3+ with displace dodecahedron central position; absorbing energy with Yb3+ as sensitizing ion; passing to active ion Er3+; dividing laser wave range at nearby of 1. 5 mum and 2. 7-3 mum through highly doped and lowly doped of Er3+ ion concentration. This laser can be used to medical, light communication, scientific study and military domain, which can meet the need of space environment application.

The invention discloses a preparation method of vanadium dioxide powders. The preparation method comprises the following steps: 1) dissolving carboxylic acid with hydroxyl in hydrogen peroxide, regulating pH value of the solution with ammonia water to be more than 7; adding vanadyl sulfate in the solution to obtain a reaction solution; after the completion of the reaction, adding an organic solvent in the solution, standing to generate precipitate, separating the precipitate from the solution to obtain peroxide complex of vanadium; 2) adding the peroxide complex of vanadium obtained in the step 1) and a reducing agent in water to form a water solution, and carrying out hydrothermal treatment to obtain vanadium dioxide powders. According to the invention, the preparation process is simple; the phase of product is adjustable; the powders of vanadium dioxide containing phase A are prepared, so that the material is provided for studying vanadium dioxide powders with phase A, and therefore, the preparation method is potentially significant for the scientific study.

The invention discloses a submarine topography construction method based on multi-source water depth data integration, which achieves reasonable splicing of various data such as multi-beam sounding, single-beam sounding, historical topography map and global topography and submarine topography construction. The invention comprises the following steps of: converting a historical submarine topography map into grid data, converting water depths of other sources into grids, using an overlapping and contrasting method to evaluate the accuracy of the water depths of different sources; using a multi-map-layer method to carry out integration, cutting and splicing on multi-source water depth data, constructing an error distribution model to reasonably revise and integrate various-source water depth data; and constructing multi-source water depth submarine topography and grid. The submarine topography construction method has the advantages that in marine mapping and charting process, the multi-source data can be effectively used, the historical water depth data accuracy and the comprehensive utilization efficiency are promoted, and the submarine topography construction method has important practical application values in marine mapping, submarine topography charting and submarine scientific studies.

The present invention relates to systems, methods and software arrangements for the detection of variations in the copy number of a gene in a genome. These systems, methods and software arrangements are based on a simple prior model that uses a first process generating amplifications and deletions in the genome, and a second process modifying the signal obtained to account for the corrupting noise inherent in the technical methodology used to scan the genome. A Bayesian approach according to the present invention determines, e.g., the most plausible hypothesis of regional changes in the genome and their associated copy number. The systems, methods, and software arrangements can be are framed as optimization problems, in which a score function is minimized. The system, methods and software arrangements may be useful to assist the scientific study, diagnosis and/or treatment of any disease which has a genetic component, including but not limited to cancers and inherited diseases.

The invention discloses a method for realizing mass quantum standard, which aims to solve the problem that because the mass unit kilogram is widely used in scientific research, production, trade even daily life, to establish a mass quantum standard has become the focus of current scientific research on metrology, world-famous institutes of metrology such as British Institute of Metrology, American Institute of Metrology, French Institute of Metrology, Swiss Institute of Metrology, International Bureau of Weights and Measures, and the like have launched related researches, but due to great technical difficulties, little progress has been made for years. The applicant of the invention designs a new method which exports the mass value of a balance weight by using the acting force between an excitation coil and a movable coil hung on a balance. Due to the static measurement process, the measurement carried out in the process of moving the coil is not required; therefore, the method can eliminate the maximum error source in the foreign scheme, and greatly improve the precision of measurement.

The invention relates to a multi-functional test and experiment platform for indoor research of jet drilling, which includes a power module, an experimental working condition control module, a test and detection module, a fluid circulation module and a jet drilling assembly. The power module includes a micro-drilling experimental device and a mud pump; the experimental working condition control module includes a central control unit and a confining pressure control unit; the test and detection module includes a sensor detection unit, a data acquisition unit, a data processing unit, and a display storage unit; fluid circulation The module includes faucets, water tanks, sedimentation filter tanks, sewage pumps and a simulated wellbore with an open upper end and a closed lower end. The multifunctional test and experiment platform of the present invention can simulate the actual jet drilling process in the laboratory, creating necessary conditions for the indoor experimental research of jet drilling, and can realize automatic control during the experiment process, and can make the jet drilling underground and invisible Visualization of jet drilling process, thus turning semi-empirical research into scientific and quantitative research.

The invention provides a graph theory analysis method of research hot spots based on co-occurrence of keywords. The method comprises the following steps of: a, acquiring a plurality of candidate keywords n1, n2, n3, ..., and nm from a document database (DB); b, determining a weight wi of the keyword ni according to the weights of the keyword ni in all documents of the DB; c, constructing an undirected weighted graph G of each keyword; and d, acquiring the keywords of the research hot spots according to the undirected weighted graph G. By the keywords which are analyzed by the method, key technical problems which are required to be discussed in the field can be covered, and the research hot spots to be dug can be extracted and used as a breakthrough for science and technology forecasting and discovery of new subject growth points, so the advancement and development of a subject are promoted. The graph theory analysis method of the research hot spots based on the co-occurrence of the keywords is applicable to the technical field of document knowledge analysis and management and also applicable to the field of scientific research.

The invention discloses a multifunctional closed small animal feeding experiment system and relates to the field of small animal feeding. The system comprises a full-automatic dung-removing device (20), a constant-temperature constant-humidity environment regulating device (30), a quantitative air interchanger (40), a breeding environment and small animal physical sign detection device (50), an automatic lifting feeding and drinking water device (60) which are arranged in a feeding cabinet (10), and a computer (70) which is arranged outside the feeding cabinet (10), wherein the full-automatic dung-removing device (20), the constant-temperature constant-humidity environment regulating device (30), the quantitative air interchanger (40), the breeding environment and small animal physical sign detection device (50) and the automatic lifting feeding and drinking water device (60) are respectively connected with the computer (70). The system performs closed breeding and isolates with the outer environment, so as to be convenient for control on variable; the computer is used for control, labor intensity is greatly alleviated, and collected data are accurate and reliable; and the system is mainly used for scientific study on small animal feeding experiments.

The invention relates to a true triaxial multifunctional large deep mine laneway model testing machine, which comprises a doughnut shape-like framework system, a hydraulic loading and pressure preserving system, a control system, a pressure water system, an equipment base system and a model dismounting system. The true triaxial multifunctional large deep mine laneway model testing machine is characterized in that the doughnut shape-like framework system is a full sealing structure and can perform the true triaxial five-face and three-directional loading, provide higher model surface stress, preserve high pressure for a long time and carry out the water-yield pressure preserving test. The true triaxial multifunctional large deep mine laneway model testing machine is applicable to multiple scientific studies of the deep mine laneway, and achieve the simulation tests of mutual influences of excavation, supporting, tunneling, water inrush, and high floor pressure, and others of the underground laneway project; the testing machine has the advantages of being compact and simple in structure, convenient to operate, and environment-friendly and energy-saving.

The invention discloses epileptic seizure recording and management patient equipment, a server, medical equipment, and a system. The patient equipment comprises a patient input module which is used for receiving seizure condition information and pharmacy condition information of an epileptic; a first information transmitting module which is used for enabling the seizure condition information and pharmacy condition information to be transmitted; a first information receiving module which is used for receiving treatment suggestion information generated according to the seizure condition information and pharmacy condition information; and an information display module which is used for displaying the treatment suggestion information. According to the invention, a patient can increase the understanding of the change of the state of an illness, thereby prompting the patient to timely go to an epilepsy department to see a doctor. Meanwhile, the equipment can help a clinic doctor know the evolution process of the illness of the patient quickly during clinical reception, thereby facilitating the reduction of clinical inquiry time and improving the treatment efficiency. In addition, the epileptic seizure data recorded by the system can be used for scientific research. Accordingly, the above technical scheme is of great significance to the patient, clinicists and scientific research personnel.

The invention belongs to the field of botany, and provides a method for the quick mycorhiza formation of azalea aseptic seedlings. By the method, the problems of high death rate, low growth speed, yellowing of laminae and the like of azalea seedlings in the prior art are solved. The method comprises the following steps of: preparing a cultivation medium and a nutrient solution; and transplanting rooted seedlings which are sown or subjected to tissue culture into the cultivation medium which is subjected to aseptic treatment, inoculating at least one bacterial block, and placing the seedlings in a culture chamber for culturing, wherein the cultivation medium consists of grass carbon and yellow sand in a weight ratio of (2-3):1; in the nutrient solution, the concentration of glucose is 0.1 to 0.3 percent; and the bacterial block is selected from any one of CGMCC NO: 6010 or 6031, and the inoculating position of the bacterial block is 0.5 to 1.0 centimeter away from a root system. By themethod, mycorrhiza of the azalea seedlings can be formed quickly and is high in infection rate, and the growth of the seedlings is quick, so the method can be used for scientific study and also can be used for the production of annual seedlings of azalea.

The invention relates to a model device for dynamic detection of root canal flushing effect and a detection method thereof. The invention is characterized in that the device is successively integrated as a whole by a transparent tooth model (1), a microscope (2), an electro-ocular (3), a notebook computer (4), a universal mechanics tester (5), an injector (6), a root canal flushing needle (7), a transparent tooth and injector fixing device (8) and a base station fixing device (9) through connectors. The detection method comprises the following steps: infusing a tracer with colors in the transparent tooth model (1) after connection of the model device for dynamic detection of root canal flushing effect is finished, while filling flushing liquid in the injector (6), driving the injector (6) by the universal mechanics tester (5) and flushing the tracer in the transparent tooth model (1) through the root canal flushing needle (7), and carrying out micro dynamic shooting with the microscope (2) and the electro-ocular (3) and storing in the notebook computer (4) to facilitate analysis of the root canal flushing dynamic effect and influence factors thereof. The method is to provide a scientific study method and clinical therapy basis for flushing the root canal.

The invention discloses an ultralow-temperature preservation technique of calluses of divaricate saposhnikovia root. A technical divaricate saposhnikovia root in-vitro ultralow-temperature preservation system is established with calluses obtained by inducing divaricate saposhnikovia root seeds as materials, and therefore, the high-quality germplasm resources of the divaricate saposhnikovia root can be effectively protected. According to the technique, the ultralow-temperature preservation of the calluses of the divaricate saposhnikovia root is realized by virtue of the processes of callus induction, pre-culture, loading, dehydration, freezing, washing, re-culture, regeneration and the like; the technique can be taken as a method for preserving the germplasm resources stably for a long time; besides, the economic cost of preservation can be reduced, the valuable and rare germplasm resources can be effectively preserved and great help can be provided for scientific study.

The invention provides a system and a method for measuring regulatory capacity and regulatory state of an autonomic nervous cardiopulmonary metabolic system, and a processing apparatus. The measuringmethods include: obtaining the indexes of autonomic nervous regulation ability and regulation state by measuring and analyzing the parameters of autonomic nervous regulation. According to the in vivophysical condition of the subjects, the in vitro measurement environment and activity scene were set to meet the measurement requirements of autonomic nervous regulation ability and regulation status.The system and method disclosed herein are important for the scientific study of cardiopulmonary metabolic system diseases and for the effective prevention, diagnosis, treatment and rehabilitation thereof.

The invention discloses a dividing method for a land and water ectone. The method includes steps of selecting environmental factors based on space distribution structure characteristics of a land and water ectone of a to-be-analyzed spot; collecting environmental factor data and performing data analysis; performing clustering analysis based on data analysis results and dividing land and water ectone. The method is a dividing method of a strip type parallel to river flow direction, so that scientific researchers can develop scientific study according to ecological degradation characteristics of different strips and perform vegetation recovery development in a manner of adjusting measures to local conditions, so that basis is provided for ecological recovery of degraded land and water ectone.

The invention discloses a method for preparing a thallium-based high-temperature superconducting thin film without a roasting target. The method comprises the steps that a Tl-Ba-Ca-Cu-O amorphous precursor thin film is deposited on a substrate chip; in the flowing oxygen atmosphere, the amorphous precursor thin film is placed in a closed synthetic sapphire crucible to be subjected to high-temperature heat treatment, and the Tl-Ba-Ca-Cu-O amorphous precursor thin film is converted into the Tl2Ba2CaCu2O8(Tl-2212) high-temperature superconducting thin film. The sapphire crucible with the smooth surface is adopted, attaching is tighter, the closing performance is enhanced, and components needed for crystallization can be provided through the thallium element content in the amorphous precursor thin film. Accordingly, the thallium-source containing roasting target is not needed, uncertain factors are reduced, and the quality of the manufactured superconducting thin film is stable. The Tl-2212 superconducting thin film manufactured through the method can be used for manufacturing microwave passive devices and can also be used for manufacturing other superconducting devices, conducting the scientific study and the like.

The invention discloses an evaluation method of an acupuncture stimulation effect. A measuring device mainly comprises a multi-frequency voltage drive source (1), a signal processing system (2), measuring electrodes (3) and wires (4). During acupuncture treatment, by fixing the measuring electrodes on two measuring points (6) of a meridian (5) with special effects, characteristics of the meridian multi-frequency electrical impedance measuring acupuncture stimulation response are changed, and electric impedance characteristic values of the related meridians of different patients treated with different acupuncture methods are read, so that acupuncture effect is judged, and quantitative standard of acupuncture treatment is discovered. The evaluation method is a scientific study and experimental method and provides reference data for clinical acupuncture.

The invention discloses a qualitative, quantitative detected primer and TaqMan probe of bluetongue virus, which is characterized by the following: the upstream primer of primer possesses SEQ ID No.:1 in the sequence list and downstream primer possesses SEQ ID No.:2 in the sequence list; the TaqMan probe possesses SEQ ID No.:3 or SEQ ID NO:4 DNA sequence in the sequence list; the 5'-end of probe marks report fluorescent group and 3'-end marks quenched fluorescent group; fitting for clinical and scientific study to proceed qualitative and quantitative analysis for bluetongue RNA; possessing important meaning to evaluate and observe bluetongue happening, recurrence and treating effect.

The invention relates to a full-automatic sample comprehensive pretreatment instrument which comprises a sampling module, a cleaning module, a treatment module, a sample placing module, a collecting module, a column temperature control module, an extraction sample injection module and an operation control module. On-line/off-line matrix elimination, purification, extraction, enrichment, desorptionand separation functions of samples can be selected and used through switching of a control circuit and a valve; all the functions can be independently used online/offline and can also be randomly combined for use according to requirements, and the sample with a complex matrix can be converted into a target sample; the instrument reduces or removes interferents, concentrates and enriches to-be-detected components, reduces the influence of complex samples on analysis results, further meets the requirements of chromatographic separation analysis of target objects, improves the response value ofinstrument detection, avoids errors caused by manual pretreatment, and ensures the reproducibility and accuracy of instrument testing. The instrument is suitable for the fields of medicine and health, environmental protection, food detection, scientific research and industrial wastewater detection.

The invention discloses a COVID-19 data acquisition and analysis system, and belongs to the field of data acquisition and analysis. The system provides service and assistance for medical staff and government decision makers and provides important support for scientific research of novel coronavirus by fully utilizing various information including treatment schemes, medication data, inspection data, test data, image data, epidemiological data and the like. The system is constructed according to the characteristics of the COVID-19 novel coronavirus pneumonia, has strong specialty, connects epidemiological data with treatment schemes, inspection data, test data, medication data and image data of patients according to the identification numbers or identification numbers of the patients in thedata acquisition and analysis process, realizes the data fusion of public health data and internal information systems of hospitals, and is favorable for comprehensively knowing the COVID-19 novel coronavirus pneumonia.