Abstract: A pedaling exercise device includes a rotation mechanism configured to pivotally support a rotation shaft to allow rotation, a pair of cranks having first ends connected to both ends of the rotation shaft of the rotation mechanism, respectively, a pair of links having first ends rotatably connected to second ends of the cranks, respectively, and having second ends provided with wheels, respectively, a pair of pedal portions connected to the links along a longitudinal direction of the links, respectively, a rolling surface connected to a first end of the rotation mechanism on a user side, and a restriction portion configured to restrict separation of the wheels from the upper surface of the rolling surface in a case where the first end of the rotation mechanism is lifted such that the rotation mechanism is erected in a state where a second end of the rotation mechanism is grounded.

Abstract: A particulate filter 200 comprises: a columnar ceramic honeycomb structure 220 having a plurality of first channels 210a and a plurality of second channels 210b; and a catalyst component carried by the ceramic honeycomb structure 220. The catalyst component contains noble metal particulates, and the following expression is satisfied: 2 m2/L?SPout?SPcent?125 m2/L, where SPcent represents the total surface area of the noble metal particulates contained in an apparent unit volume of a central portion 220c of the ceramic honeycomb structure 220, and SPout represents the total surface area of the noble metal particulates contained in the apparent unit volume of a peripheral portion 220p of the ceramic honeycomb structure 220.

Abstract: A honeycomb filter comprising a partition wall forming a plurality of flow channels, and a catalyst supported on at least a portion of the surfaces of the partition wall and/or on at least a portion of the pore interiors of the partition wall, wherein the honeycomb filter has a first end face and a second end face, the plurality of flow channels comprising a plurality of first flow channels having their ends closed on the second end face side and a plurality of second flow channels having their ends closed on the first end face side, and when the elemental composition ratio of the partition wall is represented by the following compositional formula (I): Al2(1?x)MgxTi(1+y)O5+aAl2O3+bSiO2+cNa2O+dK2O+eCaO+fSrO??(I), the inequalities 0<x<1, 0.5x<y<3x, 0.1x?a<2x, 0.05?b?0.4, 0<(c+d) and 0.5<{(c+d+e+f)/b}×100<10 are satisfied.