38 results about "Model study" patented technology

The invention provides a device for testing the performance of an injector. The device comprises a water inlet collector (1), multiple water inlet pipelines (2), an upper cover (3), a water inlet cavity (4), a lower cover (5) and a liquid collector (6). Inlets of the multiple water inlet pipelines are connected with an outlet of the water inlet collector. Outlets of the multiple water inlet pipelines lead to the water inlet cavity. The water inlet cavity (4) is formed around an inlet of a main fuel way at the lower end of the injector, and the upper cover is matched with the water inlet cavity to lead water into the inlet of the main fuel way. The liquid collector (6) is located in an outlet cavity of the injector and used for collecting flow of the main fuel way. The lower cover is located below the water inlet cavity and is matched with the water inlet cavity to achieve collection and measurement of the flow of a cooling way. By means of the device for testing the performance of the injector, due to the structural design of the device, it is ensured that water flows into a runner and flows out of the runner according to requirements, the flow of the runner is ensured, it is ensured that a test can be conducted smoothly, product test data are obtained, a basis is provided for model study, and therefore the medium atomization effect and the combustion stability of an engine are improved.

The invention relates to hydrogel as well as a preparation method and application thereof. The hydrogel is patterned temperature-sensitive hydrogel which comprises the following raw material components in parts by mass: 10-50 parts of an N-isopropylacrylamide monomer, 0.01-0.2 part of graphene oxide and 5-30 parts of a cross-linking agent. The hydrogel is applied to cell culture and collection ofcell layers and can be further used for establishing three-dimensional tumor models. The hydrogel provided by the invention is reasonable in raw material component matching and excellent in temperature sensitivity; due to reasonably matched concentrations of graphene oxide, the hydrogel has hydrophobicity at a cell culture temperature, and adhesion and propagation of cells on the surface of the hydrogel can be promoted; under a room temperature condition, the hydrogel has hydrophilcity instead of hydrophobicity, peeled cell layers can be collected with a short time, the obtained cell layers can be further cultured into cell spheres of three-dimensional structures, and the cell spheres can be applied to tumor model study and used as cell models for screening anti-tumor medicines.

The invention discloses a depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance. The model works in the following steps of (1) building an evaluation model including (a) calculating full-brain function connection matrix, (b) constructing a feature set and (c) clustering, (2) verifying result stability, (3) conducting polynomial curve fitting, and (4) evaluating individuals via the model. The depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance is advantageous in that (1) the model is driven by pure data; patient suicide tendency is screened totally according to a model research of a depression patient brain zone signal; without artificial judgment participation, errors due to subjective factors can be avoided; (2) individuals hard to be evaluated can be objectively evaluated according to extreme conditions easy to be judged by experts and without prior knowledge; and (3) by the use of the depression patient suicide risk objective assessment model based on functional nuclear magnetic resonance, suicide tendency of the depression patient can be determined and suicide tendency degree of the patient can be achieved according to model research results.

The invention discloses a method for manufacturing a three-dimensional small-diameter vessel model. The method comprises the following steps of a, preparation of a supporting bracket: utilizing a silica gel material to perform 3D printing of a supporting bracket with an inner and outer concentric circle shape structure; b, formation of a medial membrane: pouring an accellular extracellular matrixcontaining a human aortic smooth muscle cell into a middle layer of the supporting bracket to form the medial membrane; c, formation of an intima: pouring a human umbilical vein endothelial cell suspension into an inner layer of the supporting bracket to form the intima; and d, formation of an adventitia: wholly putting the supporting bracket in a dynamic culture system fully filled with human newbaby dermal fibroblast suspension to form the adventitia. The vessel model acquired with the method is good in biocompatibility, has relatively strong mechanical property and can be used for pathological model study and drug screening relevant to vessels.

The invention discloses an establishing method and application of a mouse aortic dissecting aneurysm model. The establishing method of the mouse aortic dissecting aneurysm model is simple and convenient, the mouse aortic dissecting aneurysm model can be established within a short time, surgical operation is not needed, trauma to experimental mice can be reduced, and high operability is achieved. The occurrence rate of aortic dissecting aneurysm of a modeling group is 90%, the breaking rate of the aortic dissecting aneurysm of the modeling group is 20%, the occurrence rate of the aortic dissecting aneurysm in chests and aortic dissection above chests is 90%, the occurrence rate of the aortic dissecting aneurysm in abdomen is 20%, and the induction success rate is high. The dissection occurrence position of the aortic dissecting aneurysm is similar to that of human beings, so that the mouse aortic dissecting aneurysm model can be used for easily studying the pathomechanism of the aortic dissecting aneurysm of human beings and can be applied to suspicious virulence gene screening and treatment research.

The invention provides a large-scale road network traffic flow real-time dynamic prediction system, comprising traffic flow detectors, a data fusion module, a traffic flow parameter prediction module, a traffic flow prediction model study module, a traffic geographic information platform and a traffic flow state classified evaluation module, wherein the traffic flow detectors are used for collecting the traffic flow parameters of a plurality of road conditions; the data fusion module is used for fusing the traffic flow parameters; the traffic flow parameter prediction module is used for predicting the road conditions of the next time period according to historical data and fusion data; the traffic flow prediction model study module is used for comparing real-time detected traffic flow parameters and predicted information and adjusting a prediction model according to the comparison result; the traffic geographic information platform is used for displaying the current state and the predicted state of the road traffic flow; and the traffic flow state classified evaluation module is used for evaluating the current and predicted road conditions according to the traffic flow parameters and controlling the roads according to the evaluation result and the predicted information. According to the system provided by the embodiment of the invention, the road condition information is predicted through the real-time collected traffic flow parameters and the time-space relation of the road traffic flow, and the corresponding road segments or areas can be controlled according to the predicted information.

The invention relates to a method for tracking the human body posture based on visual information. According to the technical scheme, the method comprises the steps that in the training stage, according to real three-dimensional human body posture time series data in training data and with the adoption of the Gauss latent variable model algorithm, the human body posture is studied, so that a human body posture motion prior model is obtained; in the tracking test stage, video data to be tested and a first frame of the three-dimensional human body posture in the video data are input, a latent variable motion model is established with the use of the human body posture motion prior model studied in the training stage, and the particle updating step in an immune particle filtering algorithm is achieved through the latent variable motion model. The method for tracking the human body posture based on the visual information has the advantages of being high in practicality, accuracy and efficiency.

The invention relates to the field of petroleum and natural gas exploration and development, in particular to a gas-bearing property detection method based on nonlinear inversion of a pore medium asymptotic equation. The method comprises the following steps: initiating an application method for extracting a gas-bearing property indication based on an inversion method, carrying out forward modelingresearch from logging petrophysical data, observing a phenomenon that the amplitude changes with the frequency through a model, and analyzing the phenomenon. Finally, an objective function is established in a frequency domain by using a normal asymptotic equation, and the gas-bearing property inversion based on a normal reflection coefficient of a porous medium is realized by using a nonlinear chaos method. The model studied in the invention combines a Barenblatt model and a Biot elastic pore theory, however, the application of the model is not limited to fractured reservoirs, but is applicable to situations where two or more scales exist in rocks.

The invention provides a device for testing the performance of an injector. The device comprises a water inlet collector (1), multiple water inlet pipelines (2), an upper cover (3), a water inlet cavity (4), a lower cover (5) and a liquid collector (6). Inlets of the multiple water inlet pipelines are connected with an outlet of the water inlet collector. Outlets of the multiple water inlet pipelines lead to the water inlet cavity. The water inlet cavity (4) is formed around an inlet of a main fuel way at the lower end of the injector, and the upper cover is matched with the water inlet cavity to lead water into the inlet of the main fuel way. The liquid collector (6) is located in an outlet cavity of the injector and used for collecting flow of the main fuel way. The lower cover is located below the water inlet cavity and is matched with the water inlet cavity to achieve collection and measurement of the flow of a cooling way. By means of the device for testing the performance of the injector, due to the structural design of the device, it is ensured that water flows into a runner and flows out of the runner according to requirements, the flow of the runner is ensured, it is ensured that a test can be conducted smoothly, product test data are obtained, a basis is provided for model study, and therefore the medium atomization effect and the combustion stability of an engine are improved.

The present invention concerns non-human transgenic animals as model study for human pathologies, being transgenic for having altered melusin expression. The non-human transgenic animals are to be used as models to study heart pathologies and provide therapies thereof, wherein the heart pathologies are heart failure, and in particular diluted cardiomyopathy.

A scaled model-based UHV converter transformer impulse withstand voltage test method, according to the specific structure of the scaled model designed based on the scaled-down theory, conducts simulation research to obtain the distribution parameters of the scaled-down model windings, and determine the test waveform; according to the research needs , set the lead-out tap on the scaled model to obtain the required test waveform, and set related faults; make the actual equipment, use the scaled model to test, and adjust the parameters of the produced power equipment to obtain the required test waveform; Simplify the structure of the equipment and The test method is to obtain the winding voltage distribution waveform, and set the tap to set the corresponding fault for experimental research; through the analysis and research, the normal condition of the winding under the impulse voltage and the voltage distribution characteristics of the fault condition are obtained, and the UHV commutation is obtained by using the scaling relationship Transformer voltage distribution characteristics. The invention can simplify the test steps, reduce the test cost, shorten the test period, and can study the winding voltage distribution characteristics under different fault conditions.

The invention discloses the new application of ebony and its extracts in the prevention and treatment of intestinal cancer. Based on the existing efficacy of ebony, the present invention conducts in-depth research through a large number of experiments, and adopts a mouse model of enteropathy induced by AOM-DSS to study The results show that ebony and its extracts can significantly improve the weight loss of model mice in the process of enteropathy carcinogenesis, significantly improve the progressive weight loss, loose stools and bloody stools and other symptoms of enteropathy carcinogenesis mice; The incidence of colon tumors in mice has a good effect on preventing and controlling colon cancer.

The invention discloses a modeling method of a software cost model considering the difference between software testing and a running environment, and belongs to the field of software cost model research. The method comprises the following steps: considering the difference between testing and the running environment into the modeling process of the software cost model, and analyzing the influence of the environment difference on the software testing cost and the maintaining cost; based on environmental factors, constructing functions of cost c1 of correcting unit software failures in the testing phase and testing cost c2 of unit time in the testing phase in the software cost model, and further obtaining a novel software cost model; according to the model, forecasting the software cost. The method reflects the influence of the environment difference on the software cost, the software cost model forecasting conforms to reality, therefore, the soft cost is more precisely forecasted, and the software release time is determined.

The invention discloses a model device for studying migration of polluting gas during pile foundation hitting on a polluted site. The model device comprises a model box and polluting gas releasing equipment, wherein a gas dispersing pipe is arranged at the bottom of the inner side of the model box; the model box is sequentially filled with a soil layer, a fine sand layer and a gravel layer from the top to the bottom; a horizontal polluting gas isolating layer is arranged on the top surface of the soil layer; a gas collecting chamber is formed in the upper part of the model box; the gas collecting chamber is positioned above the horizontal polluting gas isolating layer; the gas collecting chamber comprises gas collecting subcells which are arranged in parallel; the horizontal polluting gas isolating layer is arranged on the bottom surface of each gas collecting subcell; each gas collecting subcell is connected with a gas collecting device; the polluting gas releasing equipment is connected with the gas dispersing pipe in the model box. The model device can effectively evaluate a migration process of the polluting gas during pile foundation construction on an organic polluted site.