36results about How to "Simple and accurate method" patented technology

A method of measuring a glycosylated protein proportion by an AC impedance method includes passing an AC voltage or AC to two inspecting electrodes; covering a solution containing glycosylated protein completely onto the inspecting electrodes; measuring an impedance value between the electrodes and calculating the difference between the impedance value and an impedance value of a solution without glycosylated protein by an AC impedance inspection device; comparing the impedance difference with AC impedance difference/glycosylated protein concentration to obtain the proportion of the glycosylated protein in the solution containing glycosylated protein. The solution without glycosylated protein includes a salt solution and a non-glycosylated protein; the proportion of glycosylated protein in the solution containing glycosylated protein refers to the proportion of glycosylated protein in the total quantity of protein in the salt solution; and the proportion of glycosylated hemoglobin of the total quantity of hemoglobin in the salt solution.

A method for measuring latency in a bi-directional ring network includes transmitting a latency measurement packet from an originating node to a peer node and noting a time of receipt of the packet at the peer node. The packet is then transmitted back to the originating node in the opposite direction, while recording in the packet an indication of a peer node difference between a time of transmission of the packet from the peer node to the originating node and the time of receipt of the packet at the peer node. A time of return of the packet to the originating node is noted, so as to determine an originating node difference between a time of transmission of the packet from the originating node to the peer node and the time of return of the packet to the originating node. The latency is calculated by taking a difference between the originating node difference and the peer node difference.

A system and method for the verification and calibration of wind turbine sensor systems is provided. The system comprises an optical capture device provided on a wind turbine which is arranged to record the position of at least one light source provided at the wind turbine during operation of the wind turbine. The motion of the light source relative to the optical capture device can provide an indication of relative motion of a portion of the wind turbine during operation, which can then be used as an input to a calibration and/or a verification system for a sensor system of the wind turbine.

A method and circuit for measuring the optical modulation amplitude in the operating region of a laser diode is described. The method utilises two measurements of OMA, each measurement being related to the slope in a specific portion of the operating region of the power/current characteristic curve of the laser diode. By combining the two measurement values, the invention provides a 1 measurement for OMA in the operating region of the laser diode that allows for the presence of a non-linear response in the region.

An apparatus and a method are provided for determining a position of a patient during medical examinations. The apparatus comprises a tabletop operable to support the patient, at least one elongatable strain gauge which is integrated into the tabletop, and tabletop sensors operable to detect a sagging of the tabletop as a function of a change in length of the at least one elongatable strain gauge due to the sagging.

A method of calibrating parameters of an apparatus for measuring a back electromotive force (BEMF) of a voice coil motor (VCM) for moving a head on a disk, the apparatus including the VCM having a coil resistance Rm, a coil inductance Lm, and a sensing resistance Rs, including: controlling the VCM to sequentially perform a track following operation of the head on a first track, a transferring operation of the head from the first track to a second track, and a track following operation of the head on the second track; sampling a differential voltage Vadc between a voltage across the VCM and a voltage across the sensing resistance Rs and a VCM driving current Im during the transferring operation; calculating a slope S based on a ratio of a first integration value to a second integration value, where the first integration value is obtained by integrating a product of the sampled differential voltage Vadc and the VCM driving current Im during the transferring operation, the second integration value being obtained by integrating a square of the VCM driving current Im during the transferring operation, the slope S being defined by the equation S=Rm−Gb×Rs, Gb being a gain of an amplifier for amplifying the voltage across the sensing resistance Rs; and calibrating the parameters of the apparatus using the slope S.

A fluid level measurement system for sensing fluid level in a tank is disclosed that includes a float that moves vertically in the interior of the tank, and a force measuring mechanism coupled to the float that generates an output based on the upward force on the float. The system can include an outer tube where the float is contained in the outer tube. A microcontroller can compute fluid level using the force measuring mechanism output. Altitude and other factors can be accounted for. Exemplary force measuring mechanisms can include a Hall Effect sensor sensing position of a magnet coupled to the float, or a force sensor coupled to the float. The length of the float, or the float and uncompressed spring can be substantially equal to the height of the tank. The float can have a generally uniform or non-uniform outside diameter.

A method for quantitatively determining cholesterol in high-density lipoprotein, which comprises: treating a sample with cholesterol esterase and cholesterol oxidase or cholesterol esterase, an oxidized coenzyme and cholesterol dehydrogenase in an aqueous medium comprising a bile acid derivative; and measuring the formed hydrogen peroxide or a reduced coenzyme; and a reagent used therefor.

The invention relates to detection of cholesterol ozonation products that are generated by atherosclerotic plaque material, and to methods of detecting vascular conditions that relate to the accumulation and oxidation of cholesterol.

Described is a method for diagnosing a person having or being at risk of developing Sjögren's Syndrome and excluding patients with symptoms similar to Sjögren's Syndrome but with a different etiology, comprising the following steps: providing a sample of a body fluid or tissue from said person, said sample containing a mixture of unknown proteins, protein fragments or peptides; analyzing said samples with mass spectrometry to generate a m/z (mass to charge ratio) spectrogram for each sample; comparing whether the patient's sample contains m/z values that are characteristic of a Sjögren's Syndrome reference database derived from the analysis and cataloguing of multiple patient spectrograms; and determining whether said patient either has or does not have Sjögren's Syndrome on the basis of this comparative analysis.

A method for quantitatively determining cholesterol in high-density lipoprotein in a sample, which comprises: reacting a sample with i) cholesterol esterase and cholesterol oxidase or ii) cholesterol esterase, an oxidized coenzyme and cholesterol dehydrogenase in an aqueous medium comprising i) nonionic surfactant, polyanion and albumin or ii) a combination of a surfactant selected from the group consisting of polyoxyethylene alkylamine or polyoxyethylene alkenylamine and a surfactant selected from the group consisting of polyoxyethylene polycyclic phenyl ether sulfate and an anionic bile acid derivative, and measuring the formed hydrogen peroxide or a reduced coenzyme; and a reagent used therefor.

The invention discloses a cleaning method for a laser device cooling box and a detection method for detecting the cleanness of the cleaning method, and aims to provide a cleaning method which is convenient, precise, high in cleanness and capable of rapidly cleaning a cooling box of a complicated structure and a detection method which is simple, convenient, accurate and capable of quantificationally and precisely judging the washing cleanness. The cleaning method disclosed by the invention comprises the following steps: respectively connecting an inlet pipeline and an outlet pipeline of a water pump with a water inlet and a water outlet of a cooling water circulation loop of a cooling system of the laser device cooling box; filling pure glycol washing liquid into the laser device cooling box; subsequently putting the laser device cooling box full of the glycol washing liquid into an ultrasonic washer of which the temperature is regulated to 80 DEG C; starting the ultrasonic washer and the water pump to make sure that the glycol in the laser device cooling box can flow circularly under the effect of the water pump; performing a transmittance test on a standard glycol sample and a glycol liquid sample by using a spectrophotometer; afterwards comparing the transmittance test results of the standard glycol sample and the glycol liquid sample, wherein the cleanness is considered to be good if the sample transmittance is 2% smaller than the standard glycol transmittance.

The invention generally relates to a method for in vivo glucose monitoring in which the glucose concentration is measured by means of fluorescence polarization by detecting the change in viscosity, caused by changes in the glucose concentration.

An ion trap mobility spectrometer calibration system and method wherein the maximum response of the spectrometer is determined. A quantity Q₀ is chosen representing a response which is a predetermined percentage of the maximum response. Input to the ion trap mobility spectrometer are at least two known quantities Q₁ and Q₂ of an analyte, which have a predetermined relationship with Q₀. The responses corresponding to R₁ and R₂ of the ion trap mobility spectrometer are observed based on the respective inputs of quantities Q₁ and Q₂. R₁, R₂, and Q₁ and Q₂ are then used to calculate the calibration constants in an equation describing a curve where the response of the ion trap mobility spectrometer is a function of the quantity of the analyte input therein. The calculated calibration constants are input to thereafter determine, from the response, the quantity of a detected analyte based on the equation.

A determination device of an embodiment includes a processor configured to execute computer-readable instructions to perform acquiring a primary determination result of a surrounding environment determined based on a first surroundings image of a vehicle and a certainty degree of the primary determination result, performing secondary determination of the primary determination result based on both a comparison result between the certainty degree and a preset threshold value and a past primary determination result of a surroundings image of the vehicle captured in the past earlier than the first surroundings image, and to outputting a secondary determination result having higher accuracy than the primary determination result.

The invention discloses a heat-insulating property detection device and a detection method. The detection device comprises a magnifying lens and a light source, wherein the magnifying lens is used for focusing the light rays generated by the light source. The magnifying lens focuses the light rays generated by the light source, a to-be-detected heat-insulating film is placed before or behind the magnifying lens, and the heat intensity difference is compared between the light rays passing through the heat-insulating film and the light rays not passing through the heat-insulating film, so as to judge the property of the heat-insulating film. The heat-insulating property detection method provided by the invention has the advantages of being visual, scientific, simple and accurate, is capable of effectively prompting the purification of thermal insulation industries, such as a heat-insulating film industry, and prompting the quality of products, and further, the heat-insulating property detection device provided by the invention is simple and convenient to operate.

A method for starting an induction machine without residual flux includes: scanning a state of the induction machine with different stator frequencies by controlling a supply voltage applied to the induction machine; determining whether a slip value, being a difference between a rotor frequency and a stator frequency, is within a slip interval; and, when it has been determined that the slip value is in the slip interval, regulating the slip value towards zero and magnetising the machine to the required level.

A method for modelling an imaging device including an image sensor and an optical system is disclosed. The optical system has an aperture iris diaphragm defining an entrance pupil of the optical system. For a given configuration of the imaging device the method includes estimating a set of characteristic intrinsic parameters of the imaging device, in which a first intrinsic parameter is representative of a distance between the image plane and a sensor conjugated plane conjugated to the image sensor with respect to the optical system; a second intrinsic parameter is representative of a distance between the sensor conjugated plane and the entrance pupil and a third intrinsic parameter is representative of a magnification of the optical system; determining first and second modelling data respectively as a function of the first and third intrinsic parameters and second and third intrinsic parameters; and establishing a model of the imaging device as a function of the second and third modelling data.

A method for calibrating element in a semiconductor processing device with a camera is provided. The method for calibrating element in a semiconductor processing device with a camera includes taking a first picture of a first element by a camera; providing a first actuator to move the first element an increment along a first direction; taking a second picture of the first element by the camera; and comparing the first picture and the second picture to calibrate the first element. A system for calibrating element in a semiconductor processing device with a camera is also provided.

A method for predicting immunotherapy response of a subject having cancer includes the following steps. A peripheral blood sample is obtained from the subject having cancer before or after receiving the immunotherapy. The number of immune cells in the peripheral blood sample of the subject having cancer is detected. The number of immune cells and a first cut-off value/or a second cut-off value are compared to indicate whether the subject having cancer benefits from the immunotherapy. The first cut-off value/or the second cut-off value is determined by the following steps: a statistical analysis of a correlation between the number of immune cells in a group of subjects having cancer and an expected risk of disease progression in the group of subjects having cancer is performed, and then a statistically significant value used to define the correlation is obtained.