Abstract:
The invention relates to an actuation and evaluation circuit for a laser diode (1) and a photodiode (3) for determining the concentration of a gas. The laser diode can generate light in the range of an absorption line of the gas. The circuit comprises a driver (10, 11, 12, 13) for generating a driver signal (17) for the laser diode (1), an assembly (8, 9) for generating a reference signal (20), and a subtractor (5) for subtracting the reference signal (20) from the signal (21) supplied by the photodiode. The invention further relates to a measuring device for determining the concentration of a gas by way of such an actuation and evaluation circuit. Finally, the invention relates to a corresponding method.
Abstract:
The present invention relates to methods of setting up an instrument having a multiplicity of detector channels for analyzing a multiplicity of fluorescent dyes. In particular, methods and reagents are provided for determining spillover (fluorescence spectral overlap, crosstalk) of one dye in detection channels intended for the detetion of other dyes. Calibrated spillover values are predetermined for each fluorescent dye using the fluorescence emissions of a "broad-band" reference material that emits in each of the channels. The present invention is particularly applicable in the field of flow cytometry.
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:
표면 플라즈몬 공명 센서의 측정 또는 제작 과정에서 나노 구조물과 항체 간의 결합 상태를 판단할 수 있는 표면 플라즈몬 공명 센서의 테스트 방법과 표면 플라즈몬 공명 센서의 출력 신호의 균일성을 보완하기 위한 표면 플라즈몬 공명 센서의 출력 신호 보정 방법이 개시된다.
Abstract:
Ein Verfahren zur Linearisierung eines optischen Sensors in einer Dialysevorrichtung umfasst das Einbringen eines Sensors in der dialysatseitigen Abführleitung, das Ermitteln des linearen Bereichs des optischen Sensors, das rückwärtige Extrapolieren der Daten aus dem linearen Bereich und das Korrigieren der Daten aus dem nichtlinearen Bereich.