Abstract:
Techniques are disclosed relating to analysis and reduction of crosstalk between signals. These techniques may be applicable in many fields, such as single-tube PCR or DNA melt analysis, PCR or melt data from neighboring wells of a multi-well plate, capillary electrophoresis data (e.g., DNA sequencing), gas chromatography, multispectral imaging, dual-color fluorescence correlation spectrometry, electrical crosstalk, etc. According to one embodiment, crosstalk between fluorescence signals from different species may be determined based on a correlation between the time derivatives of the fluorescence signals from the fluorescent species.
Abstract:
Techniques are disclosed relating to analysis and reduction of crosstalk between signals. These techniques may be applicable in many fields, such as single-tube PCR or DNA melt analysis, PCR or melt data from neighboring wells of a multi-well plate, capillary electrophoresis data (e.g., DNA sequencing), gas chromatography, multispectral imaging, dual-color fluorescence correlation spectrometry, electrical crosstalk, etc. According to one embodiment, crosstalk between fluorescence signals from different species may be determined based on a correlation between the time derivatives of the fluorescence signals from the fluorescent species.
Abstract:
The invention relates to a method of controlling a product analysis spectrometer, the spectrometer comprising a light source (LS) comprising several light-emitting diodes (LD1-LD4) having respective emission spectra covering in combination a band of analysis wavelengths, the method comprising steps consisting in: providing a supply current (I1-I4) to at least one of the light-emitting diodes so as to illuminate it, measuring a luminous intensity (LFL1- LFL4) emitted by the light source by measuring a current at a terminal of at least one other of the light-emitting diodes which is kept unlit, determining as a function of each measurement of luminous intensity a setpoint value (LC1-LC4) of the supply current for each lit diode, and regulating the supply current for each lit diode so that it corresponds to the setpoint value.
Abstract:
An improved gas analyzer system and method for detecting and displaying the constituent gases of a respiratory gas stream, the system comprising an optical bench (109) comprising a gas pathway for the flow of a gas stream, a flow shaping inlet, three infrared detection channel assemblies for measuring the partial pressures of constituent gases, and measuring sensitivity changes in the detectors of the three infrared detection channel assemblies, a pressure sensor for measuring the pressure within the gas pathway, a temperature sensor for measuring the temperature within the optical bench, a flow rate sensor for measuring the gas flow rate through the gas pathway; analog processing circuitry (124) for processing the detected partial gas pressures, sensitivity changes, the measured values for pressure, temperature, and flow rate, and display processing circuitry (128).
Abstract:
An improved gas analyzer system and method for detecting and displaying the constituent gases of a respiratory gas stream, the system comprising an optical bench (109) comprising a gas pathway for the flow of a gas stream, a flow shaping inlet, three infrared detection channel assemblies for measuring the partial pressures of constituent gases, and measuring sensitivity changes in the detectors of the three infrared detection channel assemblies, a pressure sensor for measuring the pressure within the gas pathway, a temperature sensor for measuring the temperature within the optical bench, a flow rate sensor for measuring the gas flow rate through the gas pathway; analog processing circuitry (124) for processing the detected partial gas pressures, sensitivity changes, the measured values for pressure, temperature, and flow rate, and display processing circuitry (128).
Abstract:
Système amélioré d'analyse d'un gaz et procédé de détection et d'affichage des constituants gazeux d'un courant respiratoire, le système comprenant un banc optique (109) constitué d'une voie de circulation pour un courant gazeux, une admission pour la modulation de l'écoulement, trois ensembles de canaux de détection infrarouge pour la mesure des pressions partielles des constituants gazeux et pour la mesure des modifications de sensibilité des détecteurs des trois ensembles de canaux de détection infrarouge, un manomètre pour mesurer la pression dans le trajet du gaz, un thermomètre pour mesurer la température dans le banc optique, un débitmètre pour mesurer le débit gazeux dans le trajet du gaz, un circuit de traitement analogique (124) pour le traitement des pressions partielles détectées, des changements de sensibilité, des valeurs mesurées de la pression, de la température et du débit, et un circuit de traitement en vue de l'affichage (128).