Abstract:
A method and apparatus (10) for determining the remission of a chemistry which reacts with a medically significant component of a body fluid is provided. The method and apparatus (10) includes irradiating the chemistry with a radiation source (160) and detecting the rate of change of remission of the chemistry (106) with respect to time.
Abstract:
A system for analyzing a chemical reaction provides control of the temperature and volume of the reagents to improve the accuracy and precision in quantitive measurements of specific proteins and other immunochemistries in body fluids. The reaction occurs in a cuvette (48, 50) within a nephelometric optics module (44, 46). A sensor (246, 248) senses the temperatures of reaction buffer liquids as they flow into the cuvette (48, 50), and a heat exchanging device (250, 252) increases or decreases the temperatures of the buffer liquids. A control circuit (242) responsive to the temperature sensor (246, 248) controls the heat exchanging device (218) to maintain the temperature of the buffer liquids and the cuvette (48, 50) within a selected temperature range. The system may also include a sample pickup station (18), sample probe (22) means for withdrawing a selected sample from the sample pickup station (18), a sample preparation station, and sample transport (20) means for carrying said sample from the sample preparation station to the reaction cuvette (48, 50). The system may include an antibody pickup station (108), antibody probe (110) means for withdrawing an antibody from the antibody pickup station (108), an antibody preparation station, and antibody transport (106) means for carrying the antibody from the antibody preparation station to the reaction cuvette (48, 50).
Abstract:
Appareil de détermination d'analytes dans les échantillons liquides. Il comporte, montés en communication fluidique, une pompe volumétrique (18), une chambre (16) pouvant recevoir les réactifs spécifiques des analytes à déterminer, un détecteur (23), une seconde chambre (43) ainsi qu'un dispositif (4) servant à introduire l'échantillon dans le circuit et à le décharger. L'appareil comporte également un régulateur de débit et un dispositif (7) commandant le fonctionnement de chaque élément. On a également prévu un procédé de détermination desdits analytes.
Abstract:
Il est destiné à la mesure d'une caractéristique donnée d'un milieu fluide et comprend au moins un ensemble comportant : un réactif approprié à ladite mesure et prévu pour interagir avec le milieu fluide, des moyens de support du réactif, une fibre optique (2) appelée fibre émettrice, prévue pour envoyer de la lumière en direction des moyens de support, et au moins une autre fibre optique (4) appelée fibre réceptrice, prévue pour récupérer au moins une partie d'une lumière issue des moyens de support lorsque ceux-ci reçoivent la lumière provenant de la fibre émettrice. Les moyens de support comprennent un élément poreux ou adsorbant (10) unique sur lequel est fixé le réactif et qui est placé en regard de la fibre émettrice et de chaque fibre réceptrice. Cet élément est en contact direct avec le milieu fluide lorsque le capteur y est plongé, et donc dépourvu de membrane de confinement.
Abstract:
In making contact opening on insulation film which is provided on layer containing aluminium by selective dry etching method using reactive gas, the reactive gas containing chlorine compound gas such as CCI 4 is used; and then, when the contact opening reaches the layer containing aluminium, the intensity of emission spectrum of aluminium increases rapidly, accordingly it becomes possible to detect end point of the dry etching on the insulation film by detecting the intention of the emission spectrum of aluminium.
Abstract:
A portable system and method for measuring the concentration of multiple chemical or biological substances where an onsite analysis of such substances is needed. The new and original handheld sensor system uses a disposable optical test element and a spectroscopic detector that measures the test element response to specific analytes through a change in light absorbance, luminescence, and other forms of light-based response. In this way, reflection light intensities indicative of the test element response can be used to measure the concentration of the target analytes. The sensor system is also capable of being interfaced to an information processing unit or computer so that analytical data can be manipulated or stored electronically.