12 results about "Spectroscopy methods" patented technology

Method (100) of optical spectroscopy for analyzing a sample using an optical spectrometer (10), comprising: Obtaining a sample spectrum (101) of the sample using the optical spectrometer; Obtaining a blank spectrum (102) using the optical spectrometer, wherein the blank spectrum includes structured background radiation that correlates with the sample spectrum; Determining a cross-correlation (103) of the sample spectrum and the blank spectrum; Generating a mapped blind spectrum (105) by mapping the blind spectrum onto the sample spectrum based on cross-correlation; and Subtracting the imaged blank spectrum from the sample spectrum to produce a background-corrected sample spectrum (106).

A spectroscopic method of estimating the cadmium concentration in an aqueous sample including: preparing at least 5 aqueous calibration samples, each calibration sample including water, a pH regulator in an amount such that each calibration sample has a pH of from 8 to 10, an equal concentration of dimethylglyoxime and dissolved cadmium in an amount of from 0 to 12 μg / mL; and, measuring over optical path length (l) the absorbance for each calibration sample of radiation (R) having a wavelength of from 520 to 540 nm, thereby generating calibration data. The method further includes: forming a treated aqueous sample; measuring over the optical path length (l) the absorbance for the treated aqueous sample of radiation (R) having a wavelength of from 520 to 540 nm; generating test data; and, estimating the concentration of cadmium in the aqueous sample from the test data and the calibration data.

The application provides a fast random addressing scanning fluorescence correlation spectroscopy method and device thereof, comprising the following steps: S1, using a surface array camera to collect a series of wide field images under light sheet illumination, and obtaining a global low time resolution image fluorescence correlation spectroscopy diffusion image by calculation; S2, selecting an interested region according to the wide field fluorescence correlation spectroscopy image and setting a scanning array generation condition; S3, automatically generating a scanning array according to the selected arbitrary interested region and the set condition.The fast random addressing scanning fluorescence correlation spectroscopy method and device thereof provided by the application can solve the problem that the traditional scanning FCS cannot detect fast kinetics due to slow scanning speed, and can also solve the problem that the traditional scanning FCS cannot simultaneously monitor multiple regions due to the mechanical scanning of the scanning galvanometer.

In a method for the spectral analysis of a liquid mixture of substances consisting of known individual substances, a reference spectrum for the mixture is provided. This reference spectrum represents a target state of the mixture in which each individual substance is present at a target concentration. An actual spectrum of the liquid mixture to be analyzed is then generated. Finally, the concentrations of the individual substances in the mixture are determined based on an approximate spectral composition of the actual spectrum, derived from known pure spectra of the known individual substances and at least one compensation spectrum.

A spectroscopic device 5 is for receiving light L1 that has undergone wavelength-decomposition in a predetermined direction by a spectroscopic optical system 4 including a spectroscopic element, and outputting spectroscopic spectral data of the light L1. The spectroscopic device 5 comprises: a CMOS image sensor that has a pixel unit 11 which has a plurality of pixels 21 for receiving the wavelength-decomposed light L1 and converting the same into an electrical signal, and in which the plurality of pixels 21 are arranged in a row direction along a wavelength decomposition direction and in a column direction perpendicular to the row direction; an identification unit 14 that identifies, as specific pixels 21K among the plurality of pixels 21, pixels 21 on which a spectroscopic spectral image 31 of the light L1 is formed; and a generation unit 15 that adds up the pixel values of the specific pixels 21K belonging to the same column, and that generates spectroscopic spectral data based on the result of the adding.

Methods and systems for determining one or more ion components. The method may include disposing a fluid sampling tool into a wellbore wherein the fluid sampling tool includes at least one probe to fluidly connect the fluid sampling tool to a formation in the wellbore, and at least one passageway that passes through the at least one probe and into the fluid sampling tool. The method may further comprise drawing a formation fluid, as a fluid sample, through the at least one probe and through the at least one passageway, and analyzing the fluid sample in the fluid sampling tool for one or more ion components.

Systems and methods of managing a chemical recycling process include accessing characterization data for a feedstock, the characterization data including one or more spectra collected according to one or more spectroscopic methods. The method includes predicting a set of constituent materials included in the feedstock using the characterization data. The method includes predicting a material composition of the feedstock using the predicted set of constituent materials. The method includes identifying one or more target products using, at least in part, the predicted material composition of the feedstock. The method includes generating a set of chemical reaction schemes capable of converting at least a portion of the feedstock into the one or more target products. The method further includes storing the material composition of the feedstock, the one or more target products, and the identification of the set of chemical reaction schemes in a data store.

A computer-implemented method for synthesizing spectral data includes the following steps: acquiring a set of spectral data each associating a spectrum with a sample having a given chemical composition, using a spectroscopy method, determining a theoretical model of the distribution of the intensities of the spectrum for each wavelength channel of the spectrum, generating a set of synthetic spectral data by generating, for each wavelength channel of the spectrum, a randomly drawn intensity according to the probability distribution of the theoretical model.

Provided is an analysis device, an analysis method, and a program with which analysis processing according to a user's request input in a natural language can be executed on measurement data of a substance measured by a predetermined spectroscopy method.　An analysis device 1 comprises: a measurement data acquisition unit 31 that acquires measurement data including the spectrum of a substance to be analyzed measured by a predetermined spectroscopy method; a user request reception unit 32 that receives, in a natural language, a user's request related to analysis of the measurement data; a module selection unit 33 that performs selection processing for selecting a processing module corresponding to the user's request from among a plurality of types of processing modules that perform processing on the measurement data with respect to a natural language model 5 which has been trained for interpreting the natural language; a processing execution unit 34 that causes the processing module selected by the selection processing to execute processing; and a presentation processing unit 35 that presents an analysis result based on the processing of the processing module to the user.

Methods and systems for determining a carbon-to-oxygen (C / O) ratio within a formation are described. The methods and systems use a pulsed neutron tool conveyed within a borehole in the formation to measure gamma rays induced by inelastic scattering events between pulsed neutrons and elements within the formation. The resulting inelastic scattering spectra are treated to remove baseline counts arising from interactions occurring within scintillation materials of the detector and are then deconvolved using elemental standard spectra that are similarly detrended to remove baseline contributions.

A rotation stage (105) scans a wavelength of a quantum entangled photon pair by changing a crystal rotation angle θ. A moving mirror (110) and a driver (111) sweep an optical path difference between a signal photon and an idler photon. A photodetector (81) outputs a signal according to the signal count in a state where a target sample is disposed in an optical path of the idler photon. A processor (91) acquires, each time the wavelength is sequentially changed by changing crystal rotation angle (θ), a quantum interference signal under a condition that a sweep range of the optical path difference is limited compared with when sweeping the optical path difference to acquire an entire envelope of the quantum interference signal, or under a condition that the optical path difference is fixed, calculates amplitude of an interference fringe that appears in the acquired quantum interference signal, and calculates, based on the calculated amplitude of the interference fringe, an absorption spectroscopy characteristic at a wavelength of the idler photon corresponding to crystal rotation angle (θ).

This spectroscopy device 5 receives light L1, on which wavelength resolution in a prescribed direction has been performed by a spectroscopy optical system 4 including a spectroscopy element, and outputs spectroscopic spectrum data for the light L1, the spectroscopy device 5 comprising: a pixel unit 11 which has a plurality of pixels 21 that receive the wavelength resolved light L1 and convert the light L1 into electrical signals and in which the plurality of pixels 21 are arrayed in a row direction along the wavelength resolution direction and in a column direction perpendicular to the row direction; a conversion unit 12 which converts the electrical signals from the plurality of pixels 21 into photon numbers; and a generation unit 13 which integrates the photon numbers of the plurality of pixels 21 belonging to the same column and generates spectroscopic spectrum data based on the integration results.