Abstract: The stable isotope ratios of carbon and hydrogen contained in a measurement target object collected from an animal are measured. An area in which the animal has grown is estimated from the measured stable isotope ratios of carbon and hydrogen (S3).

Abstract: The stable isotope ratios of carbon and hydrogen contained in a measurement target object collected from an animal are measured. An area in which the animal has grown is estimated from the measured stable isotope ratios of carbon and hydrogen (S3).

Abstract: A stator core, a stepper motor and a linear actuator allowing size reduction while maintaining a rotor diameter are provided. A stepper motor 1 comprises a rotor 20 and a stator 30, wherein the stator 30 comprises an A-phase magnetic pole part 33, a B-phase magnetic pole part 34 and a dummy magnetic pole part 38, all of which are disposed to be spaced apart from and opposing the outer circumferential surface of the rotor 20. The dummy magnetic pole part has no winding core part, and the A-phase magnetic pole part 33 and the B-phase magnetic pole part 34, which the stator 30 comprises, are disposed so that the A-phase magnetic pole part 33 and the B-phase magnetic pole part 34 are included within a minimum rectangular area R surrounding the rotor 20 when the stator 30 is viewed from a width direction X, i.e., a direction perpendicular to an axial direction P of the rotor 20.

Abstract: A cable transport apparatus (1) has a first rotational axis (20a, 20c) and a second rotational axis (20b, 20d) that are not in parallel but cross each other with a predetermined angle therebetween. In this way, a V-shaped space is formed between transport belts (40a, 40b). The cable transport apparatus (1) can thus transport a thin cable (100) being in contact with the lower part of the V-shaped space and transport a thick cable (200) being in contact with the upper part thereof. Even if cables to be transported have respective successively increasing diameters, such cables can be transported using the same apparatus. Further, the cables never escape from the cable transport apparatus and can be transported without lowering the transport speed of the cables.