Abstract: A field magnet holder provided at a field portion of an electric motor is formed of a non-magnetic material. An inner wall and outer wall of the field magnet holder are respectively formed in annular shapes. Plural spacers are arranged between the inner wall and outer wall at a predetermined spacing in the circumferential direction. Sockets into which permanent magnets are inserted are formed between the spacers of the field magnet holder, plurally in the circumferential direction. Therefore, the permanent magnets may be easily assembled by being respectively inserted into the sockets. The plural permanent magnets are arrayed with magnetization directions thereof successively changed in steps of an angle that is a full cycle of electrical angles divided by a division number n, which division number n is any one integer that is at least three. Thus, ease of assembly of the permanent magnets is improved.

Abstract: In an anode side electrolytic domain (130), a radial flow is formed from an outer peripheral opening (131) to an inner side opening (141) of an anode side mesh electrode (140). Flows horizontal to the electrode surface of the anode side mesh electrode 140 are formed. Gases such as ozone generated from water electrolysis in the anode side electrolytic domain (130) are dissolved in raw water in the anode side electrolytic domain (130), and anode side electrolytic water is generated. Gas such as ozone that has been atomized by the anode side mesh electrode (140) comes into contact with the raw water, and high concentration anode side electrolytic water is generated. The anode side electrolytic water generated in the anode side electrolytic domain (130) flows in the inner side opening (141) of the anode side mesh electrode (140).

Abstract: An iron oxide powder includes a porous structure having the diameter of from 0.3 ?m to 2 ?m, wherein the iron oxide powder has an aluminum content of from 10 mol % to 80 mol %.

Abstract: In an electric motor, three-phase coils are provided to an armature disposed between an outside field system and an inside field system, and Halbach arrays are employed in the outside field system and the inside field system. Each of the Halbach arrays is divided by a number of divisions that is any number computed by adding two to a multiple of three. Permanent magnets are arrayed such that their magnetization directions are changed in sequence by steps of an angle computed by dividing one cycle's worth of electric angle by the number of divisions. Torque ripple is thereby suppressed in the electric motor.

Abstract: According to one embodiment, a mass spectrometer includes a sample stage provided to hold a sample; an analysis unit disposed to face a sample placement surface of the sample table, and performing mass analysis; an ion beam source provided to irradiate an ion beam toward the sample placement surface; an assist energy source supplying assist energy to a target area between the sample placement surface and the analysis unit; and a laser light source irradiating the target area with laser light.

Abstract: According to one embodiment, a mass spectrometer includes a sample stage provided to hold a sample; an analysis unit disposed to face a sample placement surface of the sample table, and performing mass analysis; an ion beam source provided to irradiate an ion beam toward the sample placement surface; an assist energy source supplying assist energy to a target area between the sample placement surface and the analysis unit; and a laser light source irradiating the target area with laser light.

Abstract: The present invention aims to provide a lithium ion secondary cell configured to be charged by light such as solar light (particularly, UV light (for example, light having a wavelength of 350 nm to 400 nm)). The present invention relates to a lithium ion secondary cell including: a pair of substrates, at least one of the substrates being light transmitting; an electrolyte filled between the pair of substrates; a positive electrode that includes a positive electrode material selected from lithium-containing metal oxides and that is disposed to contact the electrolyte; and a negative electrode that includes a negative electrode material selected from n-type semiconductor materials and that is disposed to contact the electrolyte.

Abstract: Provided is a metal colloid having higher visibility and higher sensitivity than a gold colloid and a Au-core Pt-shell composite colloid and suitable as a labeling agent for use in a test such as an immunoassay. An alloyed Au/Pt composite colloid formed by mixing a gold salt and a platinum salt with at least one reducing agent selected from the group consisting of an amino acid and a derivative thereof, an oligopeptide and a derivative thereof, and an amino sugar in the presence of an alkali, thereby reducing the gold salt and platinum salt.