Abstract: According to the present embodiment, a fuel cell stack comprises a cell stack having a plurality of unit cells stacked therein, each of the unit cells including an electrolyte membrane, a fuel-electrode porous passage plate, and an oxidant-electrode porous passage plate, wherein in the cell stack, at least a part of one main surface of a conductive fuel-electrode porous passage plate is in contact with one main surface of a conductive oxidant-electrode porous passage plate, and a capillary force of water contained in a hydrophilic micropores of the conductive fuel-electrode porous passage plate and the conductive oxidant-electrode porous passage plate prevents an oxidant gas in an oxidant-electrode passage and a fuel gas in a fuel-electrode passage from directly mixing together.

Abstract: A chromatography-mass spectrometry method and apparatus of the present invention includes adding, to a sample, an internal standard material having a retention time similar to that of a target analyte and having a mass-to-charge ratio different from that of the target analyte; measuring the sample with a chromatograph-mass spectrometer and obtaining a chromatogram 101 of the target analyte and a chromatogram 102 of the internal standard material; detecting a peak 113 from the chromatogram of the internal standard material and obtaining a peak start time and a peak end time of the peak; and applying the obtained peak start time and peak end time to a peak start time and a peak end time of the chromatogram of the target analyte.

Abstract: According to the present embodiment, a fuel cell stack comprises a cell stack having a plurality of unit cells stacked therein, each of the unit cells including an electrolyte membrane, a fuel-electrode porous passage plate, and an oxidant-electrode porous passage plate, wherein in the cell stack, at least a part of one main surface of a conductive fuel-electrode porous passage plate is in contact with one main surface of a conductive oxidant-electrode porous passage plate, and a capillary force of water contained in a hydrophilic micropores of the conductive fuel-electrode porous passage plate and the conductive oxidant-electrode porous passage plate prevents an oxidant gas in an oxidant-electrode passage and a fuel gas in a fuel-electrode passage from directly mixing together.

Abstract: In the present invention, an analysis schedule is pre-created such that streams of a plurality of liquid chromatograms can operate in parallel and a mass spectrometer can collect data at the timing of each component elution. A control unit controls so as to: divide the time required to analyze each sample in a plurality of liquid chromatogram systems into pre-collection time, time during collection, and post-collection time; search and allocate time positions in which the time during collection in the liquid chromatogram units do not overlap; determine start times for the plurality of liquid chromatogram units to thereby create an analysis schedule; and thereafter perform analysis. The control unit further stores parameter sets for varying component elution times, adjusts analysis parameters so as to make data collection timings appropriate for creating an analysis schedule, and changes the component elution times.

Abstract: In the present invention, an analysis schedule is pre-created such that streams of a plurality of liquid chromatograms can operate in parallel and a mass spectrometer can collect data at the timing of each component elution. A control unit controls so as to: divide the time required to analyze each sample in a plurality of liquid chromatogram systems into pre-collection time, time during collection, and post-collection time; search and allocate time positions in which the time during collection in the liquid chromatogram units do not overlap; determine start times for the plurality of liquid chromatogram units to thereby create an analysis schedule; and thereafter perform analysis. The control unit further stores parameter sets for varying component elution times, adjusts analysis parameters so as to make data collection timings appropriate for creating an analysis schedule, and changes the component elution times.

Abstract: A multicolor fluorescence analysis device is provided. The device includes a first fiberoptic plate for guiding light including fluorescence emitted from a sample as a result of irradiation of excitation light and emitting the same from a first emission part. The device includes a second fiberoptic plate for receiving light emitted from the first emission part at a second incidence part, guiding the same, and emitting the same from a second emission part. The device includes a single multilayer dielectric interference film filter that is provided on an end surface of the second emission part, transmits at least a portion of the fluorescence, and transmits light of a plurality of transmission wavelength bands that do not include the excitation wavelength bands. The device includes a two-dimensional detection unit that is disposed so as to be adhered to the multilayer dielectric interference film filter.

Abstract: A chromatography-mass spectrometry method and apparatus of the present invention includes adding, to a sample, an internal standard material having a retention time similar to that of a target analyte and having a mass-to-charge ratio different from that of the target analyte; measuring the sample with a chromatograph-mass spectrometer and obtaining a chromatogram 101 of the target analyte and a chromatogram 102 of the internal standard material; detecting a peak 113 from the chromatogram of the internal standard material and obtaining a peak start time and a peak end time of the peak; and applying the obtained peak start time and peak end time to a peak start time and a peak end time of the chromatogram of the target analyte.

Abstract: A gas measuring apparatus includes a cell portion, a light source portion, a detection portion, and a control portion. The cell portion includes a space into which a sample gas containing breath containing a first isotope of carbon dioxide and a second isotope of carbon dioxide is introduced. The light source portion changes a wavelength of the light in a band of 4.345 ?m or more and 4.384 ?m or less. The detection portion performs an operation including first detection of an intensity of the light passing through the space and second detection of an intensity of the light passing through the space into which the sample gas is not introduced. The control portion calculates a ratio of an amount of the second isotope to an amount of the first isotope based on a result of the first detection and a result of the second detection.

Abstract: A multicolor fluorescence analysis device 1 according to the present invention is provided with: an irradiation unit 41 for irradiating excitation light having a plurality of excitation wavelength bands onto a sample s; a first fiberoptic plate 424 for guiding light including fluorescence emitted from the sample s as a result of the irradiation of the excitation light and emitting the same from a first emission part 425b; a second fiberoptic plate 431 for receiving light emitted from the first emission part 425b at a second incidence part 434a, guiding the same, and emitting the same from a second emission part 434b; a single multilayer dielectric interference film filter 432 that is provided on an end surface of the second emission part 434b, transmits at least a portion of the fluorescence, and transmits light of a plurality of transmission wavelength bands that do not include the excitation wavelength bands; and a two-dimensional detection unit 433 that is disposed so as to be adhered to the multilayer die

Abstract: A breath analyzer includes a light source, a gas cell, a detection unit and a data processing unit. The light source emits infrared light of a wavelength band including an absorption line for acetone. A breath containing sample gas is introduced to the gas cell. The infrared light is incident on the gas cell. The detection unit receives transmitted light emerging from the gas cell, and outputs a sample signal value corresponding to an acetone discharge amount. The data processing unit determines an approximation formula of dependence of fat oxidation rate on acetone discharge amount in advance, and calculates a fat oxidation rate for individual sample signal values using the approximation formula. When the acetone discharge amount (microliter/min) is x, the fat oxidation rate (milligram/min) y is approximated by a following formula: y=Ax+B (where A and B are constants).

Abstract: A gas measuring apparatus includes a cell portion, a light source portion, a detection portion, and a control portion. The cell portion includes a space into which a sample gas containing breath containing a first isotope of carbon dioxide and a second isotope of carbon dioxide is introduced. The light source portion changes a wavelength of the light in a band of 4.345 ?m or more and 4.384 ?m or less. The detection portion performs an operation including first detection of an intensity of the light passing through the space and second detection of an intensity of the light passing through the space into which the sample gas is not introduced. The control portion calculates a ratio of an amount of the second isotope to an amount of the first isotope based on a result of the first detection and a result of the second detection.

Abstract: A technician is forced to determine the measurement time to be used in a selected ion monitoring (SIM) measurement while observing mass spectral data. Thus, mass spectral data and one or a plurality of mass chromatogram data items is generated on the basis of the detection results of an ion detection unit, and, for each corresponding ion component, the measurement time to be used in SIM is determined on the basis of the elution time range represented by each peak waveform of the one or plurality of mass chromatogram data items that have been generated.

Abstract: A breath analyzer includes a light source, a gas cell, a detection unit and a data processing unit. The light source emits infrared light of a wavelength band including an absorption line for acetone. A breath containing sample gas is introduced to the gas cell. The infrared light is incident on the gas cell. The detection unit receives transmitted light emerging from the gas cell, and outputs a sample signal value corresponding to an acetone discharge amount. The data processing unit determines an approximation formula of dependence of fat oxidation rate on acetone discharge amount in advance, and calculates a fat oxidation rate for individual sample signal values using the approximation formula. When the acetone discharge amount (microliter/min) is x, the fat oxidation rate (milligram/min) y is approximated by a following formula: y=Ax+B (where A and B are constants).

Abstract: A technician is forced to determine the measurement time to be used in a selected ion monitoring (SIM) measurement while observing mass spectral data. Thus, mass spectral data and one or a plurality of mass chromatogram data items is generated on the basis of the detection results of an ion detection unit, and, for each corresponding ion component, the measurement time to be used in SIM is determined on the basis of the elution time range represented by each peak waveform of the one or plurality of mass chromatogram data items that have been generated.

Abstract: A gas analysis method includes irradiating a sample gas introduced into a gas cell with infrared light tuned to a wavelength corresponding to one absorption line of a target gas contained in the sample gas, measuring a sample signal value corresponding to intensity of transmitted light of the infrared light transmitted through the gas cell, evacuating the sample gas in the gas cell and then replacing by a reference gas, measuring a reference signal value corresponding to intensity of transmitted light of the infrared light transmitted through the reference gas, and calculating gas concentration at the one absorption line from ratio of the sample signal value to the reference signal value.

Abstract: A gas measuring apparatus includes a cell portion, a light source portion, a detection portion, and a control portion. The cell portion includes a space into which a sample gas containing breath containing a first isotope of carbon dioxide and a second isotope of carbon dioxide is introduced. The light source portion changes a wavelength of the light in a band of 4.345 ?m or more and 4.384 ?m or less. The detection portion performs an operation including first detection of an intensity of the light passing through the space and second detection of an intensity of the light passing through the space into which the sample gas is not introduced. The control portion calculates a ratio of an amount of the second isotope to an amount of the first isotope based on a result of the first detection and a result of the second detection.

Abstract: A gas measuring apparatus of an embodiment includes a light source, a gas cell and a detection portion. The light source emits infrared light. Into the gas cell, gas containing 13CO2 and 12CO2 is introduced, and the gas cell includes an incident surface on which the infrared light is incident and an emission surface through which the infrared light is transmitted. The gas cell has a cell length of 2.5 cm or more and 20 cm or less. The detection portion measures a first transmittance of transmitted light from the emission surface at a first wavelength in wavelength range in an absorption line of the 13CO2 and a second transmittance of transmitted light from the emission surface at a second wavelength in the wavelength range in an absorption line of the 12CO2, and is capable of calculating a concentration of each of the 13CO2 and the 12CO2.

Abstract: An exhalation diagnostic devise includes a cell portion, a light source, a detector and a controller. The cell portion includes space into which a sample gas containing first and second substances is introduced. The detector detects an intensity of the light transmitted through the space. The controller, at a time of a first operation, causes the light source to change a wavelength, and calculates a ratio of an amount of the second substance to an amount of the first substance. And the controller, at a time of a second operation performed in one respiration, causes the light source to set the wavelength of the light to a third wavelength, determines whether concentration of at least one of the first substance and the second substance exceeds a set value or not, and starts the first operation when the concentration exceeds the set value.

Abstract: A semiconductor laser includes: a stacked body having an active layer including a quantum well layer, the active layer having a cascade structure including a first region capable of emitting infrared laser light with a wavelength of not less than 12 ?m and not more than 18 ?m by an intersubband optical transition of the quantum well layer and a second region capable of relaxing energy of a carrier alternately stacked, the stacked body having a ridge waveguide and being capable of emitting the infrared laser light; and a dielectric layer provided so as to sandwich both sides of at least part of side surfaces of the stacked body, a wavelength at which a transmittance of the dielectric layer decreases to 50% being 16 ?m or more, the dielectric layer having a refractive index lower than refractive indices of all layers constituting the active layer.

Abstract: A semiconductor laser includes: a stacked body having an active layer including a quantum well layer, the active layer having a cascade structure including a first region capable of emitting infrared laser light with a wavelength of not less than 12 ?m and not more than 18 ?m by an intersubband optical transition of the quantum well layer and a second region capable of relaxing energy of a carrier alternately stacked, the stacked body having a ridge waveguide and being capable of emitting the infrared laser light; and a dielectric layer provided so as to sandwich both sides of at least part of side surfaces of the stacked body, a wavelength at which a transmittance of the dielectric layer decreases to 50% being 16 ?m or more, the dielectric layer having a refractive index lower than refractive indices of all layers constituting the active layer.