Abstract:
PROBLEM TO BE SOLVED: To provide a method for determining an early nucleic acid concentration from real time nucleic acid amplification data. SOLUTION: This method for determining the early nucleic acid concentration from the real time nucleic acid amplification data comprises amplifying a nucleic acid (DNA or RNA) extracted from an organism or virus with an enzyme, and then calculating amplification cycle number or amplification time corresponding to one half of the strength of the maximum fluorescent light signal excluding background fluorescent signals, amplification cycle number or amplification time corresponding to the maximum amplification efficiency, and a strength of unamplified nucleic acid fluorescent light signal excluding the background fluorescent signals. Thereby, the early concentration of the nucleic acid can be determined without a differentiation/integration method. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an FET base sensor for ion material detection having high sensitivity, a detection device of the ion material equipped therewith, and a detection method of the ion material utilizing it. SOLUTION: This sensor is equipped with a sensing chamber 10 equipped with one reference electrode 14 and a plurality of sensing FETs 12, and a reference chamber 11 equipped with another reference electrode 14 and a plurality of reference FETs 13. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an ultrasmall fluorescence detector for detecting a reaction in a prescribed volume of microchamber of a microifine fluid chip, in a short time. SOLUTION: This fluorescence detector for measuring PCR amplification in the microifine fluid chip includes the prescribed volume of micro chamber in an actual time includes a sample flow-in port, a sample discharge port, a micro channel, the microifine fluid chip having the wide microchamber, a microheater for regulating a reaction temperature in the microchamber, a light emitting diode light source for excitation light, the first optical system mechanism for irradiating the microchamber with the excitation light, the first detector, and the second optical system mechanism for reflecting a guided fluorescent beam toward the first detector in the microchamber. The light from the light source is focused between the first mirror and an objective lens to be converted into a spot size irradiating the whole micro chamber, the spot size of the excitation light passed through the objective lens is formed widely to irradiate the whole microchamber of the microifine fluid chip with the excitation light, and the fluorescent beam is detected thereby in a wide area. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for purifying a nucleic acid by using silver nanoparticles. SOLUTION: The method for purifying a target substance using silver nanoparticles comprises (a) a step to mix a specimen containing a molecule having a thiol group with silver nanoparticles to form a mixture containing a complex of the molecule and the silver nanoparticles and (b) a step to separate and remove the complex from the mixture. The method is extremely useful in LOC compared with conventional nucleic acid purification method because the method enables the DNA purification enabling quick PCR amplification by a three-stage operation even if including a work to dissolve the specimen containing a molecule having a thiol group. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a light detecting device for multichannel and multicolor measurement and a multichannel sample analyzer that adopts it. SOLUTION: The light detecting device comprises a photodetector 10, a filter wheel 12 where at least two color filters are mutually bonded disk-like, a plurality of optical channels 17 for making a plurality of beams enter the filter wheel 12, and a mirror portion 20 where a plurality of mirrors for sequentially reflecting a plurality of the beams that pass through the filter wheel 12, to the photodetector 10, respectively. The mirror portion 20 rotates with the filter wheel 12. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an optical system for multi-channel fluorometry. SOLUTION: This optical system for the multi-channel fluorometry for emitting light to a plurality of sample channels to detect fluorescence emitted from samples includes a light source 10; an integrator 20 for bringing the light emitted from the light source into light having a uniform intensity distribution; a sample holder 30 provided with the plurality of sample channels for mounting the samples fluorescence-reacting with the light emitted from the integrator; and a beam splitter 33 arranged between the integrator and the sample holder to separate incident light at a prescribed ratio. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for determining an early nucleic acid concentration from real time nucleic acid amplification data. SOLUTION: The method for determining the early nucleic acid concentration from the real time nucleic acid amplification data comprises: a step of amplifying a nucleic acid (DNA or RNA) extracted from an organism or virus with an enzyme; a step of generating a function representing correlation with strength of fluorescent signal by amplification amount shown in real time by amplification cycle number or amplification time of the nucleic acid; a step of calculating a strength of unamplified nucleic acid fluorescent light signal excluding the background fluorescent signals of the nucleic acid by utilizing the function; and a step of obtaining initial concentration of the nucleic acid from the calculated unamplified fluorescent light signal strength. Thereby, the early concentration of the nucleic acid can be determined without using a differentiation/integration method. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for determining an early nucleic acid concentration from real time nucleic acid amplification data. SOLUTION: The method for determining the early nucleic acid concentration from the real time nucleic acid amplification data includes amplifying a nucleic acids (DNA or RNA) extracted from an organism or virus with an enzyme, and then, calculating amplification cycle number or amplification time corresponding to one half of the strength of the maximum fluorescent light signal excluding back ground fluorescent signals, amplification cycle number or amplification time corresponding to the maximum amplification efficiency, and a strength of unamplified nucleic acid fluorescent light signal excluding the background fluorescent signals. Thereby, the early concentration of the nucleic acid can be determined without a differentiation/integration method. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a microfluidic system comprising a microchannel in which a plurality of electromagnets are arranged, and methods of mixing a sample and dissolving a cell with the microfluidic system. SOLUTION: There is provided a microfluidic system comprising at least an inlet and at least an outlet, the inlet and the outlet being connected through a microchannel 400, wherein two or more electromagnets are arranged in a predetermined direction to a wall surface of the microchannel 400 relative to the proceeding direction of a fluid passing through the microchannel 400. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an optical system for analyzing multi-channel samples which uses a high-speed rotating mirror and an aspherical mirror, and a multi-channel analyzer using the optical system. SOLUTION: This optical system comprises: a light source unit 10 emitting light traveling along an optical axis; a semi-spheroid aspherical mirror 30 disposed in rotational symmetry about the optical axis; and an inclined mirror 41 reflecting the light exiting the light source unit to the semi-spheroid aspherical mirror, while rotating about the optical axis, wherein an opening is formed in the center of the semi-spheroid aspherical mirror so that the light emitted from the light source unit can enter the inclined mirror through the semi-spheroid aspherical mirror. According to this, a plurality of samples are measured while preventing optical strokes between the samples, and parts to be used are miniaturized. COPYRIGHT: (C)2006,JPO&NCIPI