634 results about "Field analysis" patented technology

A sampling device for sampling body fluid includes a lancet for making an incision, a capillary tube for drawing-up body fluid from the incision, and a test strip affixed to an upper end of the capillary tube for receiving the fluid. An absorbent pad can be disposed between the test strip and capillary tube for spreading-out the fluid being transferred to the test strip. An on-site analyzer such as an optical analyzer and / or an electrochemical analyzer can be mounted in the device for analyzing the fluid. Alternatively, a test strip can be slid through a slot formed in the bottom end of the device so that by passing the device against the skin after an incision has been formed, the test strip will directly contact body fluid emanating from the incision.

A method for using computer-aided diagnosis (CAD) for digital tomosynthesis mammograms (DTM) including retrieving a DTM image file having a plurality of DTM image slices; applying a three-dimensional gradient field analysis to the DTM image file to detect lesion candidates; identifying a volume of interest and locating its center at a location of high gradient convergence; segmenting the volume of interest by a three dimensional region growing method; extracting one or more three dimensional object characteristics from the object corresponding to the volume of interest, the three dimensional object characteristics being one of a morphological feature, a gray level feature, or a texture feature; and invoking a classifier to determine if the object corresponding to the volume of interest is a breast cancer lesion or normal breast tissue.

KnowledgeByGo is a knowledge based Internet application service provider system (ASP), that tracks and analyzes browser behavior in real-time. Data analysis is delivered to the website owner or marketing agent to decide if a real time response or off line campaign needs to be initiated. KnowledgeByGo allows real-time behavioral tracking and prediction; customer relation management; one-to-one banner manager; site analysis reporting service; industry wide marketing research reports; product management; order processing; secure payment system; and customer contact manager. Subscribers get the immediate benefits of: collaborative filtering; real-time behavioral prediction; up-selling and / or cross-sell selling; banner advertisement income; Customer Relation Management (CRM); one-to-one banner management; site analysis reporting server; network-wide sales and marketing reports; product content and online pricing spidering; site management, backend product management, backend order processing, RMA processing, secured payment system, customer contact manager, price-search engine utility, and consolidated participation purchasing.

The present invention provides a sample tank having a window for introduction of electromagnetic energy into the sample tank for analyzing a formation fluid sample down hole or at the surface without disturbing the sample. Near infrared, mid infrared and visible light analysis is performed on the sample to provide a downhole in situ or surface on site analysis of sample properties and contamination level. The onsite analysis comprises determination of gas oil ratio, API gravity and various other parameters which can be estimated by a trained neural network or chemometric equation. A flexural mechanical resonator is also provided to measure fluid density and viscosity from which additional parameters can be estimated by a trained neural network or chemometric equation. The sample tank is pressurized to obviate adverse pressure drop or other effects of diverting a small sample.

The invention provides a method for carrying out shale gas reservoir evaluation and finding a dessert area for shale gas exploration and development comprehensively through comprehensive application of rock physics, log data and omnibearing or wide-azimuth three-dimensional seismic data. The method is characterized by analyzing the characteristics of the dessert area in a shale reservoir by applying comprehensive geophysical exploration technologies of laboratory rock geophysical measurement, log data comprehensive analysis, rock physical modeling, vertical seismic section data, omnibearing or wide-azimuth three-dimensional seismic data high precision surface layer comprehensive modeling static correction processing, prestack de-noising processing, amplitude relative fidelity processing, resolution enhancement processing which is carried out by utilizing well constraint and well seismic data to drive ground seismic data, fine excision, iteration velocity analysis, interval velocity field analysis, prestack depth migration processing, high resolution processing, azimuth classification processing, high-precision anisotropy processing, prestack and post-stack data inversion processing, and neural network analysis and the like, and thus gas bearing characteristic prospect of the shale gas reservoir is evaluated accurately and the dessert area for shale gas exploration and development is delineated.

A method of analysis, analysis system, program product, apparatus, and method of supplying analysis of value incorporating the use of at least one data acquisition device, a central processor, and a communication link that is connectable between the data acquisition device and the central processor. The central processor is loaded with multivariate calibration models developed for predicting values for various properties of interest, wherein the calibration models are capable of compensating for variations in an effectively comprehensive set of measurement conditions and secondary material characteristics. As so configured, the calibration models can compensate for instrument variance without instrument-specific calibration transfer. Measurement results generated by the central processor can be transmitted to an output device of a user interface.

The invention discloses a method for simulating the blade flutter boundary of an aviation turbine engine, which is based on the principle of energy law and adopts a weak coupling method to design a flutter forecasting method, thus obtaining the blade flutter boundary of the engine by pneumatic damping value. The method comprises: first, a solid model of a blade is set up; then, modal analysis is carried out on the blade; after that, a flow field model of the blade is set up; the vibration displacement of the linear interpolation blade can be obtained, grid files needed by flow field analysis are generated by adopting multilayer dynamic mesh processing, a dynamic mesh module is invoked to obtain the parameters in the flow field, pneumatic damping is acquired under every working condition, and finally, the flutter boundary can be obtained. Based on the one-way weak coupling, the method greatly simplifies the calculation, saves the calculation cost, and can realize the pneumatic damping calculation under any frequency and different flow field states, thus having good engineering applicability.

The invention discloses a numerical simulation method for a selective laser melting process. The method comprises a first step of establishment of a finite element model of additive manufacturing process simulation; a second step of meshing on the finite element model of the additive manufacturing process, wherein full-hexahedron meshing is adopted; a third step of definition of printing powder material properties and thermal physical performance parameters which must be determined for temperature field analysis in the additive manufacturing process; a fourth step of loading of a control equation of a mobile heat source; and a fifth step of analysis of thermal stress field and total deformation changes in the additive manufacturing process and after sintering is finished. Through the numerical simulation method for the selective laser melting process, printing parameters can be optimized, and warping and deformation of parts can be prevented; and the method provides effective guidancefor supporting structural design and a printing strategy (speed and direction), lowering the rejection rate and realizing ''success at a time''.

Disclosed are oligonucleotide amplification primers and detection probes specific for the amplification and detection of pathogenic organisms, including for example, specific Influenza A H1N1 viral isolates. Also disclosed is a biological organism identification kit including the disclosed nucleic acid probes and primers, as well as thermal cycling reagents that is both portable and durable, and may also be self-contained for remote, or in-field analysis and identification of particular influenza isolates from a variety of biological specimen types.

A portable, lightweight and high-intensity light source for detecting and analyzing fingerprints during field investigation. On-site field analysis requires long hours of mobile analysis. In one embodiment, the present invention comprises a plurality of light emitting diodes; a power source; and a personal attachment means; wherein the light emitting diodes are powered by the power source, and wherein the power source and the light emitting diodes are attached to the personal attachment means to produce a personal light source for on-site analysis of latent fingerprints. The present invention is available for other applications as well.

A method for using computer-aided diagnosis (CAD) for digital tomosynthesis mammograms (DTM) including retrieving a DTM image file having a plurality of DTM image slices; applying a three-dimensional gradient field analysis to the DTM image file to detect lesion candidates; identifying a volume of interest and locating its center at a location of high gradient convergence; segmenting the volume of interest by a three dimensional region growing method; extracting one or more three dimensional object characteristics from the object corresponding to the volume of interest, the three dimensional object characteristics being one of a morphological feature, a gray level feature, or a texture feature; and invoking a classifier to determine if the object corresponding to the volume of interest is a breast cancer lesion or normal breast tissue.

The invention belongs to the flex-wing miniature aircraft auxiliary design technical field. The invention is characterized in that: the following modules which are respectively a structure-flow field entity modeling and basic assumption module, a k-epsilon turbulent flow model flow field analysis module, a linear elastic structure analysis module and a structure-flow field coupling interface module are set in a computer, wherein, the structure-flow field entity modeling and basic assumption module is provided with flexible wings and a three-dimensional model in a circumferential flow field; the k-epsilon turbulent flow model flow field analysis module is used for obtaining distribution pressure on a fluid-solid coupling surface of the flow field under different flight conditions; the linear elastic structure analysis module obtains displacement and speed of flex-wing structure meshes; the structure-flow field coupling interface module obtains deformation of the meshes of the flow field from the obtained displacement of the flex-wing structure meshes, and the deformation is taken as an input condition of the k-epsilon turbulent flow model flow field analysis module and then outputted; distribution pressure on wing surfaces of the flexible wings is obtained according to the distribution pressure of the flow field and taken as an input condition of the linear elastic structure analysis module and then outputted. The flex-wing miniature aircraft has the advantages that: higher accuracy than two dimensional analysis is guaranteed and simultaneously the efficiency of simulation calculation can be improved.

The invention relates to an electrochemical sensor for simultaneously detecting cadmium and lead ions and a preparation method. The sensor is composed of an electrochemical work station, a working electrode, a counter electrode, a reference electrode and an electrolytic tank, wherein the working electrode adopts a glassy carbon electrode as a base, and a Nafion / N-doped micropore carbon composite membrane is modified on the surface of the working electrode; the electrochemical sensor can realize the simultaneous detection of the trace cadmium and lead ions, and the detection limits are respectively 1.5mug / L and 0.05 mug / L. The preparation method of the working electrode provided by the invention has the advantages that simplicity and environmental protection are realized, the working electrode combines the characteristic that hetero atoms and Nafion can effectively adsorb heavy metal ions, and bismuth and to-be-detected heavy metal can form an alloy, and the sensitivity of sensing heavy metal ions of the glassy carbon electrode is remarkably improved. The electrochemical sensor provided by the invention has the advantages that the reproducibility is good, the antijamming capability is strong, the detection limits are low, and the electrochemical sensor is applied in on-site analysis of cadmium and lead ions.

The invention belongs to the technical field of power electronics, and particularly relates to a parameter-adaptive steady state junction temperature prediction model of a high-power crimping IGBT module considering thermal coupling and a parameter extraction method thereof. In view of the problem that the mutual influence of heat generation of chips in a high-power-density crimping IGBT module and the double-face heat dissipation property thereof, based on the temperature field analysis and basic circuit theory of a three-dimensional model, a method for establishing a steady state equivalent thermal resistance network model considering thermal coupling and a heat sink of the crimping IGBT module is provided for predicting the junction temperatures of the chips. The parameters of the model provided by the invention are corrected according to different heat dissipation conditions, thereby being universal to different working conditions and heat sink flows, moreover thermal coupling influence factors are quantitatively analyzed by equivalent thermal coupling matrix elements corresponding to the model, and meanwhile a new idea is provided for model parameters provided by device manufacturers for users.

The invention discloses a permanent magnet synchronous motor temperature rise heat dissipation analysis method based on the multi-field coupling technology. The method comprises the first step of carrying out the analysis of electromagnetic loss by the establishment of an electromagnetic field model of an electric machine to obtain the copper loss on a coil, the iron loss of an iron core and the eddy-current loss of permanent magnet materials, the second step of establishing a fluid solid strong coupling conjugate heat conduction model of the structural temperature field analysis and the fluid heat dissipation analysis of the electric machine, the third step of establishing a bothway weak coupling model of the electromagnetic loss and the fluid solid strong coupling conjugate heat conduction analysis, and the fourth step of achieving the convergence of a single physical model and the convergence of the load transferring between the electromagnetic field model and the fluid solid strong coupling conjugate heat conduction model by the adaptation of a repetitive cycle iterative method, wherein if the condition of the convergence meets the condition set by a user, the coupling is balanced, and the computing process is finished. The permanent magnet synchronous motor temperature rise heat dissipation analysis method integrates the advantages of the strong coupling and the weak coupling, the temperature rise and the heat dissipation process when the electric machine works are precisely simulated in a unified software platform, the stability of the convergence in the process of computing is enhanced, and computing precision and computing efficiency are improved.

The invention discloses a finite element method-based storage battery thermal management analysis and optimization method. The finite element method-based storage battery thermal management analysis and optimization method comprises the following steps of: acquiring parameters of a plurality of batteries and a battery pack respectively and establishing three-dimensional models of the plurality of batteries and the battery pack; performing the meshing of a definite element on the three-dimensional models of the plurality of batteries and then performing thermal field analysis after the meshing to acquire temperature field analytical results of the plurality of batteries; performing fluid mechanics meshing on the three-dimensional models of fluid in the battery pack and then after the meshing, using temperature field analytical results of the plurality of batteries as constraint conditions of the plurality of batteries in the fluid grid models in the battery pack; performing fluid mechanics calculation on the constrained grid models to acquire flow field analytical results of the storage batteries; judging whether the flow field analytical results accord with preset conditions or not; and if the flow field analytical results do not accord with the preset conditions, optimizing the design scheme of the battery pack and establishing the models again. The finite element method-based storage battery thermal management analysis and optimization method is not limited to mathematic analysis capacity, has higher adaptability and solving capacity, does not need entity models, is economic and quick in the analytical process, and has higher degree of freedom and flexibility.

A method and apparatus for isolating and analyzing segments of a deployed, operational cable plant from a remote location. Individual cables, or segments, within an operationally deployed cable plant infrastructure may be isolated and analyzed without requiring a technician to physically inspect and perform an on-site analysis. The approach allows a cable segment to be isolated and analyzed without physically disconnecting the cable from the deployed infrastructure. By isolating and analyzing selected cable plant segments, an entire deployed cable plant infrastructure may be discretely analyzed and specific problems within the cable plant infrastructure may be identified. The approach allows the analyses to be performed from a remote location and is compatible with and may be integrated within a multipurpose network management system.

The invention provides an interactive three-dimensional virtual scene and visualized information integrating system, which builds a live-scene video acquisition subsystem, a field management data acquisition subsystem, a safety alarming subsystem and the like by the aid of the internet network communication technology on the basis of the interactive three-dimensional virtual scene simulation technology of computers so as to realize visualized integration of visualized information of multiple aspects including interactive three-dimensional virtual scenes, live-scene video images, field management information data, field analysis result data, two-dimension geographic coordinates, alarming status icons and the like in a management area, and is capable of providing omnibearing field information of the management area for managers and meeting the management requirements of different levels. Compared with the prior art, the interactive three-dimensional virtual scene and visualized information integrating system is a brand-new technology improvement for remote management tool markets for projects and has wide application prospect on the aspects of remote project scheduling and management application.

The invention discloses an ANSYS-based crosslinking polyethylene insulated cable temperature field finite element calculation method. The method successively comprises the following steps: firstly, taking a crosslinking polyethylene insulated cable as a research object and performing parametric geometric modeling based on a simulation software ANSYS, secondly, applying current excitation to the crosslinking polyethylene insulated cable to perform magnetic field analysis, applying voltage excitation to the crosslinking polyethylene insulated cable to perform electric field analysis then, and simultaneously loading joule heat loss, eddy-current loss and medium loss obtained from the magnetic field analysis and the electric field analysis to the crosslinking polyethylene insulated cable to be taken as heat sources, perform temperature field analysis and perform calculation of a crosslinking polyethylene insulated cable temperature field. The method has great flexibility and adaptability of solving for complex regional and border problems, can more accurately calculate the temperature of a crosslinking polyethylene insulated cable conductor, and then can explore the potential of cable current carrying capability; and the method can save cable investment, and also can improve the cable utilization rate and cable operating level.

The invention provides a system and method for rapidly detecting seepage of a geomembrane in a refuse landfill. The system comprises a mobile testing car, wherein the mobile testing car is matched with a testing probe, a signal processing circuit, a data acquiring system, a GPS (Global Position System) positioning device and a computer data analysis and model establishing system; and the testing probe is connected with the anode of a high-voltage (1000V) signal source through a lead, and the cathode of a high-voltage (1000V) direct signal source is connected with a high-voltage electrode. When a device for rapidly detecting seepage of the geomembrane in the refuse landfill is used for detection, large-scale soil aeration on the refuse landfill is not needed, and paving of a plurality of detecting electrodes is also not needed; and when seepage detection is carried out by using a high-voltage direct-current method, a seepage point can be rapidly searched through orienting and positioning by using a voltage field multi-dimensional vector analysis method which is different from the traditional plane voltage field analysis method. By using the GPS navigation of a vehicle-mounted detecting system, the detection process is accelerated, the detecting efficiency is increased, and the labor intensity is reduced.

This invention has two synergistic elements for simultaneous use in point-of-care or field analyses of diverse substances important to clinical medicine and other applications. The first element is a sample holder in which are stored the several reagents need for quantification of target molecules. The onboard storage of reagents in a water soluble plastic obviates the need for purchase, storage, measuring and mixing of the required reagents prior to analyses. The second part of the invention is a compact hand-held analyzer made of modern miniature optical components, into which the holder is inserted right after it is loaded with a sample by capillary action. The combination of the holder and analyzer permits analyses that are ten times faster than those done with current analyzers, and equally accurate. Analyses can be performed by diverse people, who require only a few minutes of training in the use of the entire invention.

The invention discloses a tunnel pipeline safety monitoring and early warning system. The monitoring system is composed of a pipeline deformation measurement unit, a temperature measurement unit, a support displacement and reaction force measurement unit, a water level detection unit, a field data acquiring and processing unit, a field acousto-optic alarm, a remote analysis and control terminal, and an optical cable. Monitoring signals of the measurement units are acquired and processed by a multi-channel demodulation module and a field analysis and processing module, and transmitted to the remote analysis and control terminal through a wireless transmission module by a GPRS protocol. A piece of control system software carries out statistical recording and early warning analysis of the monitoring signals, and performs safety threshold setting, monitoring system remote control, and field acousto-optic alarming. Due to the modular and multi-channel design of the monitoring system, different monitoring programs and multiple groups of monitoring points can be configured according to the monitoring need, the requirement of monitoring and early warning of mountain, river and other tunnel-through pipelines can be met, and automatic remote intelligent tunnel pipeline monitoring and management is realized.

Provided is an analytical method based permanent magnet motor field analysis and torque calculation method. The method comprises the following steps of: step 1: establishing a magnetic vector potential mathematical model of a gap zone and a permanent magnet region; step 2: establishing a magnetic vector potential mathematical model of a slot area; step 3: calculating a cogging torque; and step 4: analyzing and comparing an analytical calculating result. The invention provides an analytical method based permanent magnet motor field analysis and torque calculation method. According to the structural features of a surface mounted radially magnetized permanent magnet motor model, the analytical model is divided into three sub-regions, namely a permanent magnet region, a gap zone and a slot area; a magnetic vector Laplace equation or a Poisson equation is established in each region; sub-region equations are connected through junction conditions, so as to obtain the analytical expression of a load air gap field and a slot field by using a direct analytical method.

A method and system are provided for heterogeneous log analysis. The method includes performing hierarchical log clustering on heterogeneous logs to generate a log cluster hierarchy for the heterogeneous logs. The method further includes performing, by a log pattern recognizer device having a processor, log pattern recognition on the log cluster hierarchy to generate log pattern representations. The method also includes performing log field analysis on the log pattern representations to generate log field statistics. The method additionally includes performing log indexing on the log pattern representations to generate log indexes.

The invention discloses a method for detecting a concentration of nano particles in solution by a nephelometry, which comprises the following steps of: a first step of preparing standard dispersed solution and carrying out ultrasonic dispersion to form uniform standard dispersed solution for later use; a second step of drawing a calibration curve between the concentration of the nano particles and the turbidity, calculating to obtain a standard curvilinear equation, and returning to the first step to restart if the linearity r of the calibration curve is lower than 0.999; and a third step of measuring the concentration of the nano particles in a sample to be measured, placing the sample to be measured into an ultrasonic water bath to carry out ultrasonic dispersion, taking and moving uniformly dispersed solution to be measured into a cuvette cell of a turbidity meter, measuring to obtain a turbidity value of the solution to be measured on a nephelometer by taking a liquid solvent difficult to volatilize as a blank reference, and obtaining the corresponding concentration value of the nano particles according to the calibration curvilinear equation obtained in the second step. The method has the characteristics of strong pertinence, simple, visual and rapid analysis method, capability of field analysis, high precision and accuracy and the like and also serves for enterprises which produce and apply nano materials.

The invention provides a micro-fluidic chip with an integrated PDMS surface tension minipump and an application in immunoassay. The chip comprises a sample-adding liquid bath, a mixing unit, a reaction passage, a flow speed control unit, a PDMS surface tension minipump and a waste liquid bath which are all arranged on the same PDMS chip encapsulated in another layer of PDMS or glass. The micro-fluidic chip utilizes the PDMS with an added emulsifier or nonionic surface activator to manufacture and integrate the low-cost surface tension minipump, fully integrates a reaction unit and a driving unit on the chip, does not need software control, external interfaces and external power sources, is suitable for field analysis and has the advantages of small size, low cost, extremely simple operation, and the like.

The invention relates to providing analysis services to a plurality of customers using a plurality of data acquisition devices connected to a central processor, by way of a communication link, which is loaded with at least one calibration model configured to generate a predicted value of property of interest from data acquired from a pluraity of samples using the data acquisition devices wherein the analysis services include transmitting the predicted value of a property of interest to a customer from which analysis services is requested.

A planar nanospectrometer formed as a single chip that uses diffraction structures, which are combinations of numerous nano-features placed in a predetermined configuration and providing multiple functionalities such as guiding light, resonantly reflecting light at multiple wavelengths, directing light to detectors, and focusing light on the detectors. The diffraction structure can be described as a digital planar hologram that comprises an optimized combination of overlaid virtual sub-gratings, each of which is resonant to a single wavelength of light. Each device includes at least one sensor, at least one light source, and at least one digital planar hologram in an optical waveguide. The device of the present invention allows detection of small amounts of analytes in gases and liquids or on solid surfaces and can be particularly advantageous for field analysis of environmental safety in multiple locations because of its miniature size and low cost.

The present invention provides a method for analyzing gases such as carbon dioxide. Economical on-site analytical capabilities are provided for by concentrating the impurities prior to their analysis.