Abstract:
PROBLEM TO BE SOLVED: To provide a plastic determination device achieving the improvement of accuracy of performing the determination of the kind of plastic on determined plastic having a deformed shape at a place which light is made enter.SOLUTION: In a Fourier transform infrared spectrophotometer 3, the light from a light source 7 is made enter determined plastic 33 via an incident optical system 29, and a detector 27 detects the light from the determined plastic 33 via a light-receiving optical system 31. A plastic determination device 1 determines the kind of the determined plastic 33 on the basis of a detection result of the Fourier transform infrared spectrophotometer 3. A focal distance of the incident optical system 29 is shorter than that of the light-receiving optical system 31.
Abstract:
PROBLEM TO BE SOLVED: To provide a flow cell which enables flow cells having optical path lengths different from each other to be attached to one optical system without reducing light quantity in comparison with conventional one and causing problems in positional relationship on an optical axis and the like.SOLUTION: There is provided the flow cell in which a light introduction member for introducing measurement light into a linear capillary 1 where a sample solution is made to flow is attached to one end of the capillary 1, and a light leading out member which leads out light transmitted through the capillary 1 to the outside while transmitting the sample solution flowing in the capillary 1 is attached to the other end of the capillary 1. In the flow cell, the light introduction member comprises an optical waveguide 5 inserted into the capillary 1, and the light leading out member comprises a window member 8 attached to an opening at the other end of the capillary 1. Thus, flow cells 10 having different optical path lengths can be attached while loss of quantities of light transmitted through capillaries 1 is suppressed without causing the problem in positional relationship on an optical system of an absorbance detection device or the like.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for immobilizing nucleic acid having high immobilizing efficiency without using an amino group, having a simple immobilizing process and capable of forming a linker which is less susceptible to be degraded by a reagent included in a system to which immobilization nucleic acid is provided, and to provide a substrate with nucleic acid immobilized thereon which is acquired by using the method.SOLUTION: The method for immobilizing nucleic acid includes: constituting, on a substrate surface having a thiol group on the surface, a reaction system in which a linker reagent having two maleimide rings via a divalent organic group R, and the nucleic acid to be immobilized on the substrate surface and having the thiol group coexist; forming, in the reaction system, sulfide bonds between the thiol group on the substrate surface and one maleimide ring of the linker reagent, and between the other maleimide ring of the linker reagent and the thiol group of the nucleic acid; and providing a substrate with the nucleic acid immobilized thereon via the linker reagent.
Abstract:
PROBLEM TO BE SOLVED: To provide a particle measuring instrument for acquiring diffusion information such as a diffusion coefficient. SOLUTION: This particle measuring instrument is equipped with a cell 10 for holding a specimen, a power supply 15, electrodes 11 and 12 for forming a space-periodically changing electric field around the specimen in the cell by thereon impressing a voltage from the power supply 15, a light source 16 for applying measurement light to the specimen, a detector 18 for detecting diffracted light generated by applying the measurement light to the specimen with the periodic electric field formed around the specimen, an impressed-voltage control part 22a for causing the diffracted light to temporally change by stopping or modulating the voltage impressed on the electrodes from the power supply, and a signal analysis part 21 for analyzing information on the diffusion of particles based on the temporal change in the diffracted light detected by the detector 18. This measuring instrument is provided with a temperature control means 26 for adjusting the temperature of the specimen. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical measuring instrument for sensitively measuring information on particles in a liquid. SOLUTION: This optical measuring instrument is equipped with: a light source 16; an electric source 15; a cell 10; a diffraction grating-cum-electrode 11 formed at a position adjoining a liquid specimen in a cell 11 for producing a basic diffracted light pattern by being illuminated with light from the light source 16; a voltage impression part 21 for changing particle distribution by impressing a voltage on the grating-cum-electrode 11 to produce a new derivative diffracted light pattern at an angular position different from that of the basic diffracted light pattern; a light detector group 25 for severally detecting derivative diffracted light of respective orders included in the derivative diffracted light pattern; and a derivative diffracted light signal processing part 31 for collecting respective signals of the derivative diffracted light simultaneously detected by the detector group 25. The processing part 31 measures information on the particles based on the sum of the plurality of substantially simultaneously collected signals of the derived diffracted light. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical measuring instrument for measuring data related to particles contained in a liquid, such as a liquid electrolyte. SOLUTION: The optical measuring instrument is equipped with a parallel inlet port group 15 for introducing second liquid into the first liquid in containers 11 in parallel so as to leave an equal interval between the second liquid, a light source 12 for emitting the incident light toward a lattice-like region, where the second liquid introduced from the parallel introducing port group 15 and the first liquid are alternately arranged in parallel and a detector 13 for detecting the diffracted lights emitted from the lattice-like region and constituted so as to measure the data related to the particles contained in either the first liquid or the second liquid, on the basis of the diffracted lights generated in the lattice-like region. COPYRIGHT: (C)2006,JPO&NCIPI