摘要:
This invention provides a method for measuring the concentration of urinary trypsin inhibitors which is excellent in precision and reproducibility, whose operation is simple, and in which a possibility of damaging a plastic cell is eliminated. The method for measuring the concentration of urinary trypsin inhibitors comprises mixing an urine sample, a protease solution containing trypsin, and a buffer solution, adding a substrate solution to the mixture to cause the enzyme reaction, and measuring the activity of the enzyme, wherein the buffer solution is prepared so that it contains at least 0.15 .mu.mol calcium per 1 .mu.g of the trypsin but no more than 100 .mu.mol calcium per 1 ml of the urine sample in the reaction mixture, and wherein the substrate solution is prepared by dissolving the substrate in an organic solvent and diluting the mixture solution with aqueous medium, wherein at least one of an amphoteric surfactant and a nonionic surfactant is added to at least one of the organic solvent and the aqueous medium.
摘要:
As to respective expiration components to be measured, wavelengths having excellent correlations between component concentrations and Raman spectral intensity values are previously selected as measuring wavelengths which are specific to the components, an expiration specimen is irradiated with Raman excitation light, Raman spectra at the measuring wavelength which is specific to nitrogen and those at the measuring wavelengths previously selected for the components to be measured respectively are measured, Raman spectral intensity ratios of the components to the Raman spectral intensity of nitrogen are obtained, and the respective expiration components are quantitatively analyzed through a calibration curve which is previously prepared as to the Raman spectral intensity ratios of the respective components to nitrogen and concentrations. It is possible to provide a measuring method utilizing Raman spectroscopy, which can directly determine intra- expiratory components in a short time with no requirement for expendable items.
摘要:
A measuring beam is incident upon a triangular cell storing a liquid sample, and transmitted light thereof is received by a linear sensor so that both transmitted light intensity and a position of the beam are detected. A refractive index calculating part calculates refractive indices from the position detected by the linear sensor, while an absorbance calculating part calculates absorbance values dependent on component concentration values correcting influence by transmittance change at the triangular cell through the transmitted light intensity values and the refractive indices of the sample calculated at the refractive index calculating part. A component concentration calculating part performs a multivariate analytical operation on the basis of the absorbance values dependent on the component concentration values at a plurality of measuring wavelengths calculated at the absorbance calculating part.
摘要:
A biosensor which electrochemically detects a material which relates to a reaction of a specific compound in a liquid sample with a biologically active substance or its related substance, in which the biologically active material or an optionally used mediator is placed at a part which is remote from a position of an electrode which acts as electrochemical detector means, and optionally the biological active material or the mediator is covered with a polymer layer.
摘要:
A total reflection cell has a total reflection prism on at least one surface thereof. A mixed solution containing a gold colloid labelled antibody which is adsorbed on a gold colloid is stored in the total reflection cell, and a sample solution containing an antigen causing antigen-antibody reaction with the antibody is added thereto for forming a gold colloid labelled immune complex. A measuring beam is introduced into the total reflection prism from an incident optical system at an angle θ of incidence causing total reflection and an outgoing beam from the total reflection prism is received by a measuring optical system, thereby measuring absorption by the gold colloid labelled immune complex and carrying out qualification and determination of the antigen.
摘要:
A dispersed-type testing/measuring system provides for example a simplified terminal unit to be installed at a patient's home. The dispersed-type testing/measuring system has a central controlling unit 20 and a plurality of terminal units 30 each accessible to the central controlling unit via a communication line 15. Each terminal unit 30 includes a crude data collecting portion 40, and a data transmitting means 45 for sending the data collected by the crude data collecting portion 40 to the central controlling unit 20. The central controlling unit 20 includes a measurement data calculating means 210 for generating measurement data by making calculation on the crude data sent from each terminal unit 30.
摘要:
A urinal is provided on its forward end with a cell, which internally communicates with the urinal to outwardly project from the same. A measuring part comprises a light source part for applying a measuring beam of the visible or near infrared wavelength region to the cell which is set in a cell setting part and a light receiving part for receiving and detecting the measuring beam transmitted through the cell, and measures absorbances of uric components to be measured at wavelengths selected therefor respectively. A sensor part is adapted to detect that the cell is set in the cell setting part, so that the measuring part starts a measuring operation on the basis of a signal indicating that the sensor detects the cell. It is possible to carry out a urine test on a person who lies on bed.
摘要:
A total reflection cell has a total reflection prism on at least one surface thereof. A mixed solution containing a gold colloid labelled antibody which is adsorbed on a gold colloid is stored in the total reflection cell, and a sample solution containing an antigen causing antigen-antibody reaction with the antibody is added thereto for forming a gold colloid labelled immune complex. A measuring beam is introduced into the total reflection prism from an incident optical system at an angle .theta. of incidence causing total reflection and an outgoing beam from the total reflection prism is received by a measuring optical system, thereby measuring absorption by the gold colloid labelled immune complex and carrying out qualification and determination of the antigen.
摘要:
As to reaction solutions in which the amount of each potassium ferricyanate, glucose oxidase and glucose substrate are set at a constant value while glucose concentrations are varied, intensity changes of peaks at a shift wavenumber of 2081 cm.sup.-1 in light scattering spectra are measured every 10 seconds, the maximum values of the intensity changes of the peaks at the respective glucose concentrations obtained, for obtaining a calibration curve from correlations between the maximum values of the reaction velocities and the glucose concentrations. The calibration curve is employed for carrying out quantitative measurement of an unknown sample.
摘要:
To project measuring light with good reproducibility onto the measuring part of a measured object so that measurement conditions can always be constant. An optical measuring apparatus is equipped with a spectroscopic analyzer that detects the spectral intensity of the reflected light of measuring light projected onto a human hand. Spectroscopic analyzer moves in the direction" of the X-axis, Y axis, and Z axis, and around the Z axis by a moving mechanism. During the registration of the measuring part of the human hand, a CCD camera takes a picture of the human hand, and the operator selects a part having a feature from the pattern of the taken image. During the spectrometry, the CCD camera again takes a picture of the human hand. The optical measuring apparatus then detects the registered feature part on the currently taken image, moves spectroscopic analyzer by moving mechanism, and projects measuring light onto the registered feature part.