Abstract: A refrigerant flow path unit includes: a unit body that includes plates that are laminated together, and has an interior in which a refrigerant flow path is formed; a refrigerant pipe; and a first brazing filler metal that joins the unit body to the refrigerant pipe. The plates of the unit body include: a first plate that has a first opening and is disposed at an end of the unit body in a first direction in which the plates are laminated; and a second plate that has a second opening that communicates with the first opening and is disposed second from the end of the unit body in the first direction. The refrigerant pipe is inserted into the first opening and the second opening.

Abstract: A first searcher executes a primary search with respect to a primary library based on a sample mass spectrum. The primary library includes a plurality of standard mass spectra. When a judging unit judges that a search range is to be enlarged, a second searcher executes a secondary search with respect to a secondary library based on the sample mass spectrum. The secondary library includes a plurality of predicted mass spectra produced from a plurality of molecular structures.

Abstract: A refrigerant flow path unit includes: a unit body that includes plates that are laminated together, and has an interior in which a refrigerant flow path is formed; a refrigerant pipe; and a first brazing filler metal that joins the unit body to the refrigerant pipe. The plates of the unit body include: a first plate that has a first opening and is disposed at an end of the unit body in a first direction in which the plates are laminated; and a second plate that has a second opening that communicates with the first opening and is disposed second from the end of the unit body in the first direction. The refrigerant pipe is inserted into the first opening and the second opening.

Abstract: An air conditioner includes: a casing including a bottom plate; a refrigerant flow path unit housed inside the casing, and having an interior in which a refrigerant flow path is formed; a compressor installed on the bottom plate; and a shutoff valve that opens and closes to allow and block a flow of a refrigerant. The refrigerant flow path unit is supported at a distance from the bottom plate by a fixed-side member other than the compressor. The fixed-side member includes either one of: a mounting plate to which the shutoff valve is fixed, or a support plate to which the mounting plate is fixed.

Abstract: A refrigeration apparatus includes: a refrigerant flow path unit that comprises plates stacked together, and in which a refrigerant flow path is disposed; first components that are functional components each including a driving unit; second components other than functional components; and a casing accommodating the refrigerant flow path unit, and the first and second components. The first components and the second components constitute a refrigerant circuit. The refrigerant flow path unit: has a first surface and a second surface on both sides in a normal direction of the plates, and is disposed in the casing in a posture with the first surface and the second surface being upstanding. The first components are connected to the first surface. The second components are connected to the second surface. The refrigerant flow path unit includes joint tubes that connect pipes linked to the second components.

Abstract: An evaluation section identifies, in a list of candidate compounds, a group of candidate compounds having the degree of reverse similarity greater than or equal to a threshold s1. When all candidates in the group of candidate compounds have differences between the degrees of similarity that are greater than or equal to a threshold s2, the evaluation section judges that there is a composite state. The difference between the degrees of similarity is computed by subtracting the degree of forward similarity from the degree of reverse similarity. The similarity ratio may be used in place of the difference between the degrees of similarity.

Abstract: A partial structure estimation apparatus is configured to generate a first explanatory variable by performing composition estimation for each peak in a mass spectrum acquired from a sample, and to generate a second explanatory variable by performing composition estimation for each peak interval in the mass spectrum. The partial structure estimation apparatus is further configured to then estimate a partial structure as an objective variable based on the first explanatory variable and the second explanatory variable. In a partial structure estimation model generation apparatus, a partial structure estimation model is generated through machine learning using a training data set.

Abstract: Each estimated composition candidate is evaluated based on a mass spectrum produced using soft ionization and a mass spectrum produced using hard ionization. In the evaluation, a comparison between two measured isotope patterns (primary pattern matching), and a comparison between the measured isotope pattern and a theoretical isotope pattern (secondary pattern matching) are applied stepwise.

Abstract: An extraction section extracts a basic pattern of chemical noise included in a mass spectrum. A generation section generates pseudo chemical noise as a connected body of a plurality of pseudo fragments generated by intensity correction of the basic pattern. A removal section removes the pseudo chemical noise from the mass spectrum.

Abstract: A composition of a focused portion corresponding to a portion of a molecular ion is estimated as a partial composition based on a mass of the focused portion. An initial composition search range is modified based on the partial composition. A composition of the molecular ion is estimated as an overall composition based on a mass of the molecular ion under a modified composition search range. A way of modifying the composition search range may include a method for modifying a lower limit to a range of the number of atoms and a method for adding a new range of the number of atoms associated with a new chemical element.

Abstract: A composition estimation target peak is selected from a mass spectrum of a sample, and a group of measured isotope peaks related to the composition estimation target peak is selected. A composition candidate for the sample is estimated based on the composition estimation target peak. A distribution of a theoretical isotope peak corresponding to the composition candidate is calculated. Presence or absence of an adduct ion or a desorbed ion in the sample is determined based on a first mass difference between isotopes in a distribution of the measured isotope peaks and a second mass difference between isotopes in the distribution of the theoretical isotope peak.

Abstract: A first mass spectrum including a fragment ion peak is generated under application of a first ionization method. A second mass spectrum including a molecular ion peak is generated under application of a second ionization method. These mass spectra are synthesized to generate a synthesized mass spectrum. On the synthesized mass spectrum, difference information, such as a mass difference and difference composition, is calculated between the molecular ion peak and the fragment ion peak.

Abstract: An extraction section extracts a basic pattern of chemical noise included in a mass spectrum. A generation section generates pseudo chemical noise as a connected body of a plurality of pseudo fragments generated by intensity correction of the basic pattern. A removal section removes the pseudo chemical noise from the mass spectrum.

Abstract: An evaluation section identifies, in a list of candidate compounds, a group of candidate compounds having the degree of reverse similarity greater than or equal to a threshold s1. When all candidates in the group of candidate compounds have differences between the degrees of similarity that are greater than or equal to a threshold s2, the evaluation section judges that there is a composite state. The difference between the degrees of similarity is computed by subtracting the degree of forward similarity from the degree of reverse similarity. The similarity ratio may be used in place of the difference between the degrees of similarity.

Abstract: Each estimated composition candidate is evaluated based on a mass spectrum produced using soft ionization and a mass spectrum produced using hard ionization. In the evaluation, a comparison between two measured isotope patterns (primary pattern matching), and a comparison between the measured isotope pattern and a theoretical isotope pattern (secondary pattern matching) are applied stepwise.

Abstract: A composition of a focused portion corresponding to a portion of a molecular ion is estimated as a partial composition based on a mass of the focused portion. An initial composition search range is modified based on the partial composition. A composition of the molecular ion is estimated as an overall composition based on a mass of the molecular ion under a modified composition search range. A way of modifying the composition search range may include a method for modifying a lower limit to a range of the number of atoms and a method for adding a new range of the number of atoms associated with a new chemical element.

Abstract: There is provided a mass spectrometry data processor allowing for easy selection of a compositional formula for a sample component to be analyzed (analyte) even in general mass spectrometry applications. The mass spectrometry data processor is used to perform a qualitative analysis of the sample component based both on a first mass spectrum obtained by ionizing the sample component by a soft ionization method and on a second mass spectrum generated by cleavage of the sample component.

Abstract: A first mass spectrum including a fragment ion peak is generated under application of a first ionization method. A second mass spectrum including a molecular ion peak is generated under application of a second ionization method. These mass spectra are synthesized to generate a synthesized mass spectrum. On the synthesized mass spectrum, difference information, such as a mass difference and difference composition, is calculated between the molecular ion peak and the fragment ion peak.

Abstract: A mass spectrometry data processing apparatus includes a data processing part and a calculation part. The calculation part calculates differences in mass among all pieces of the peak data from the peak list, calculates an intensity ratio that is a ratio of intensity between two pieces of the peak data used in calculating the difference, and generates difference-intensity ratio data. Further, the calculation part retrieves difference-intensity ratio data having the difference included in a section, calculates a sum of the intensity ratio of the retrieved difference-intensity ratio data, and calculates difference-intensity ratio distribution data.

Abstract: There is provided a mass spectrometry data processor allowing for easy selection of a compositional formula for a sample component to be analyzed (analyte) even in general mass spectrometry applications. The mass spectrometry data processor is used to perform a qualitative analysis of the sample component based both on a first mass spectrum obtained by ionizing the sample component by a soft ionization method and on a second mass spectrum generated by cleavage of the sample component.