Abstract:
In or near real-time monitoring of fluids can take place using an opticoanalyiical device that is configured for monitoring the fluid. Fluids can be monitored prior to or during their introduction into a subterranean formation using the opticoanalyiical devices. Produced fluids from a subterranean formation can be monitored in a like manner. The methods can comprise providing an acidizing fluid comprising a base fluid and at least one acid; introducing the acidizing fluid into a subterranean formation; allowing the acidizing fluid to perform an acidizing operation in the subterranean formation; and monitoring a characteristic of the acidizing fluid or a formation fluid using at least a first opticoanalyiical device within the subterranean formation, during a flow back of the acidizing fluid produced from the subterranean formation, or both.
Abstract:
A spectroscopic method for spectroscopic detection and identification of bacteria in culture is disclosed. The method incorporates construction of at least one data set, which may be a spectrum, interference pattern, or scattering pattern, from a cultured sample suspected of containing said bacteria. The data set is corrected for the presence of water in the sample, spectral features are extracted using a principal components analysis, and the features are classified using a learning algorithm. In some embodiments of the invention, for example, to differentiate MRS A from MSSA, a multimodal analysis is performed in which identification of the bacteria is made based on a spectrum of the sample, an interference pattern used to determine cell wall thickness, and a scattering pattern used to determine cell wall roughness. An apparatus for performing the method is also disclosed, one embodiment of which incorporates a multiple sample analyzer.
Abstract:
A method, a system and a computer program are disclosed for recognizing of at least one wood species. In particularity, the method acquires an image of the at least one wood species for analyzing the image using an image acquisition module (IAM) (220). In addition, the method processes the image for enhancing quality of the acquired image using a pre processing module (PPM) (230). Additionally, the method extracts a plurality of features of the processed image for classifying at least one pattern using a feature extraction module (FEM) (240). Further, the method classifies the at least one pattern for the recognizing the at least one wood species using a pattern classification module (PCM) (250).
Abstract:
The present invention relates to a method and a device for monitoring oil condition and/or quality based on fluorescence and/or NIR spectra as well as laboratory reference measurements on a set of oil samples. Through the use of chemometric data analysis (i.e. multivariate data analysis) the spectroscopic signals and patterns will be correlated to the laboratory reference measurements that describe the condition and/or quality of the oil. Based on this relation it is possible to predict the reference measurements and/or conditions of a new oil sample based solely on a fluorescence and/or NIR spectrum of the sample.
Abstract:
A system and method to predict the progression of disease of a test sample is provided A group of known biological samples is provided, each having an associated known outcome including a non-diseased or diseased sample. A Raman data set is obtained for each known biological sample. Each data set is analyzed to identify a diseased or non-diseased reference data set. A first database is generated which contains reference Raman data sets for all diseased samples. A second-database is generated which contains reference data sets for all non-diseased samples. A test Raman data set of a test biological sample having an unknown disease status is received. A diagnostic is provided as to whether the test sample is non-diseased or diseased The diagnostic is obtained by comparing the test data set against the reference data sets in the databases using a chemometric technique to predict the progression of disease.
Abstract:
A system and method to predict the progression of disease of a test sample. A group of known biological samples is provided. Each known biological sample has an associated known outcome including a non-diseased sample or a diseased sample. A Raman data set is obtained for each known biological sample. Each Raman data set is analyzed to identify a diseased or non-diseased reference Raman data set depending on whether respective biological sample is the non-diseased sample or the diseased sample. A first database is generated where the first database contains reference Raman data sets for all diseased samples. A second database is generated where the second database contains reference Raman data sets for all non-diseased samples. A test Raman data set of a test biological sample is received, where the test biological sample has an unknown disease status. A diagnostic is provided as to whether the test sample is a non-diseased sample or a diseased sample. The diagnostic is obtained by comparing the test Raman data set against the reference Raman data sets in the first and the second databases using a chemometric technique. A prediction of the progression of disease may be then provided.
Abstract:
A system for predicting blood constituent values in a patient includes a remote wireless noninvasive spectral device (2) for generating a spectral scan of a body part of the patient. The system also includes a remote invasive device (1) and a central processing device (3). The remote invasive device (1) generates a constituent value for the patient, which the central processing device (3) predicts a blood constituent value of the patient based upon the spectral scan and the constituent value.
Abstract:
Examples of methods are described herein. In some examples, a method includes determining signal variation data of a fluorescence signal measured from an amplification procedure of a nucleic acid sample. In some examples, the method includes detecting, using a machine learning model, a target nucleic acid strand in the nucleic acid sample based on the signal variation data.
Abstract:
A method for removing noise from spectral data recorded using a spectrometer. The method includes normalising spectral data to generate normalised spectral data and applying a machine learning model to the normalised spectral data. The machine learning model is trained to remove noise from spectral data using normalised training data, wherein the spectral data is normalised based on a different scaling to the normalisation of the training data.
Abstract:
An abnormality detection method that can automatically detect abnormality in preset spectrum data, such as reference intensity data (base intensity data) used for optical measurement of a film thickness is disclosed. The abnormality detection method includes: creating the preset spectrum data before polishing of the workpiece; inputting the preset spectrum data to an autoencoder which is a trained model constructed by machine learning using training data including a plurality of normal preset spectra data; calculating a difference between output data output from the autoencoder and the preset spectrum data; and determining that there is an abnormality in the preset spectrum data when the difference is larger than a threshold value.