摘要:
A method for driving an ionic conductive liquid comprises placing a pair of electrodes in the ionic conductive liquid, and exerting an electromagnetic force to the liquid by application of a voltage between the pair of the electrodes to drive the liquid. A method for mixing and agitating a medium comprises feeding the medium to an ionic conductive liquid, placing a pair of electrodes in the ionic conductive liquid, and exerting an electromagnetic force to the liquid by application of a voltage to drive the liquid and to mix and agitate the medium. An apparatus for delivering a liquid comprises a container for housing an ionic conductive liquid, at least one pair of electrodes in the container, and a power source for applying an voltage between the pair of electrodes, the apparatus delivering the liquid from the container by driving the liquid according to the method for driving.
摘要:
A flow of liquid containing floating fine particles is formed in a flow path, thereby causing successive movement of the particles. A light beam having intensity distribution from a laser is focused on the liquid flow, whereby the particle is optically trapped at the irradiating position, thus being stopped against the liquid flow or being slowed by a braking force. This phenomenon is utilized in controlling the spacing of the particles in the flow or in separating the particles.
摘要:
A minute flow path is filled with liquid so that the liquid may be supplied from an accumulating portion. Energy is imparted to the liquid exposed outwardly of an opening in the flow path by a heat generating element or by energy application to thereby heat and gasify the liquid. Thereupon, the liquid is supplied by an amount corresponding to the gasified liquid by capillary phenomenon through the flow path, and gasification is continuously effected, whereby a flow free of pulsating flow can be formed in the flow path.
摘要:
An injection port for injecting a sample, an accumulation portion for accumulating the injected sample having a reagent carrier enclosed, a flow passage portion, having a light receiving element at a measuring position located halfway thereof, for passing a reaction fluid having reacted with the reagent in the accumulation portion therethrough, a micro-pump having a feed action of the sample fluid within the flow passage portion and which is a heat generating element provided near a nozzle downstream of the measuring position of the flow passage portion are formed integrally and intensively as a cartridge by a producing method including a semiconductor fabrication process.
摘要:
In a method for measuring a specified component in a specimen by reacting the specimen with a first reagent formed by binding a substance active to the specified component, with carrier particles and a second reagent formed by labelling a substance active to the specified component with a first label, and measuring the substances in the complexes obtained in the reaction, there is disclosed a method featured by labelling the carrier particles with a second label different from the first label, and detecting the second label and then the first label utilizing the detection of the second label as a trigger.This method enables a highly precise measurement without the influence of noise components in the detection of specified trace components in the specimen, utilizing an antigen-antibody reaction or a nucleic acid hybridization.
摘要:
On a slab-like board formed of a transparent material is closely attached a wedge-shaped transparent cover member provided with a recess in a central inner portion, thereby to form a clearance. The height of the clearance between the recess and the board is configured to decrease continuously or in steps. When an immunological active substance such as a monoclonal antibody is caused to sensitize carrier particles F, and a reagent having the carrier particles F dispersed into a liquid medium mainly composed of the water is mixed with a specimen, the reaction will occur in which the flocculate is formed from plural carrier particles. When this reaction liquid is poured into the clearance through the opening, the reaction liquid penetrates in the direction having a narrower vertical spacing due to surface tension. A single carrier particle unflocculated can move deep within the recess because it is small in diameter, but the flocculate G is trapped on its way and can not move because of its size.
摘要:
An apparatus is so constructed as to measure a specific substance in a test specimen by the degree of the aggregation of carrier particles in a reaction solution in which the test specimen is mixed with the carrier particles which carry a substance specifically binding to the specific substance. The apparatus includes a substrate having comb-shaped electrodes mounting the reaction solution and amplifier and alternating oscillator for displaying a variable voltage to the comb-shaped electrodes. The test specimen measuring apparatus having the structure accelerates the aggregation of the reaction solution by applying an alternating voltate to the comb-shaped electrodes in a state that the reaction solution is being mounted on the substrate, and detects the spatial spectrum of the comb-shaped electrodes on which the reaction solution is mounted, thus performing the qualitative or quantitative detection of the presence of the substance in the test specimen.
摘要:
A labeled complex formed by combining a labeling agent with a biological substance, where the labeling agent is a trinucleus dye represented by the general formula (I)' or (II)': ring(Xa)-La-ring(Xb)-Lb-ring(Xc) (I)' �ring(Xa)-La-ring(Xb)-Lb-ring(Xc)!.sup..sym. Y.sup..crclbar.(II)' where the ring(Xa), ring(Xb), and ring(Xc), which mean rings having Xa, Xb, or Xc respectively, are independently a heterocyclic ring having one to three heteroatoms of oxygen, sulfur, nitrogen, or selenium, the heterocyclic ring being unsubstituted or substituted by any of a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted aralkyl group; La and Lb are independently a methine chain composed of one to six substituted or unsubstituted methine linkage, and one of La and Lb may be omitted to link directly the heterocyclic rings; and Y.sup..crclbar. represents an anion. A method of analysis, comprises combining any of the labeled complex with a target substance to be detected, and detecting the target substance optically.
摘要:
To provide a reagent with excellent stability under storage, which can detect a subject compound to be measured with higher specificity and sensitibity. Complexes of a compound represented by the general formula (IV): ##STR1##
摘要:
There are provided a method and an apparatus for measuring an immunologically active material by physically or chemically immobilizing a material being immunologically active to a material to be measured of a specimen onto dehydrated solid fine particles, providing a desired dispersed body of said immunologically active material immobilized onto said solid fine particles in a dispersing medium, adding the specimen to said dispersed body while stirring to react the specimen with the immunologically active material, thereby causing a reaction mixture in an agglutinated state and optically measuring said agglutinated state of the reaction mixture to thereby quantitatively determine the content of the material to be measured with an improved accuracy.