Abstract: A gas monitoring apparatus includes a sample introducing portion, a measurement portion, an ionization portion, a mass analysis portion, a data processing portion and a display. The sample introducing portion introduces a sample gas including an object material to be measured. The measurement portion measures a concentration of a predetermined coexisting material, which coexists with the object material in the sample gas. The ionization portion ionizes the sample gas. The mass analysis portion analyzes mass of an ion produced by the ionization portion. The data processing portion analyzes signals detected by the mass analysis portion to calculate a concentration of the object material. And the display displays results of analysis conducted by the data processing portion. The data processing portion includes an adjustment portion which adjusts the concentration of the object material according to the concentration of the predetermined coexisting material.

Abstract: A gas monitoring apparatus includes a sample introducing portion, a measurement portion, an ionization portion, a mass analysis portion, a data processing portion and a display. The sample introducing portion introduces a sample gas including an object material to be measured. The measurement portion measures a concentration of a predetermined coexisting material, which coexists with the object material in the sample gas. The ionization portion ionizes the sample gas. The mass analysis portion analyzes mass of an ion produced by the ionization portion. The data processing portion analyzes signals detected by the mass analysis portion to calculate a concentration of the object material. And the display displays results of analysis conducted by the data processing portion. The data processing portion includes an adjustment portion which adjusts the concentration of the object material according to the concentration of the predetermined coexisting material.

Abstract: According to the present invention, a means of estimating the place of origin of a test subject by quickly and conveniently determining the genome type of JC virus infecting a test subject is provided. The present invention relates to a set of oligonucleotide probes for determining the genome type of JC virus infecting a test subject, such set containing: oligonucleotide probes (a-1) and (a-2); oligonucleotide probes (b-1) and (b-2); oligonucleotide probes (c-1) and (c-2); oligonucleotide probes (d-1), (d-2), (d-3), and (d-4); oligonucleotide probes (e-1), (e-2), and (e-3); oligonucleotide probes (f-1), (f-1), and (f-3); oligonucleotide probes (g-1), (g-2), and (g-3); oligonucleotide probes (h-1), (h-2), (h-3), and (h-4); oligonucleotide probes (i-1) and (i-2); oligonucleotide probes (j-1), (j-2), and (j-3); oligonucleotide probes (k-1), (k-2), and (k-3); and oligonucleotide probes (l-1) and (l-2).

Abstract: An apparatus for detecting a chemical agent, capable of increasing a detection speed of a chemical agent, decreasing a false alarm rate, pinning down the kind of a chemical agent, and meeting specifications for unattended continuous monitoring equipment suitable for detecting sarin or soman. This detection apparatus comprises a sample introduction unit for introducing a sample, an ionizing unit for positively ionizing the sample from the sample introduction unit, a mass spectrometer unit for analyzing ions of the sample, and a computer for analyzing data, and is best suited for identifying a dangerous substance by detecting signals peculiar to chemical agents, such as sarin or soman.