Abstract: A suspension arm includes a main body. The main body includes a curved portion curved along a longitudinal direction and has a closed section. The main body includes an inner side wall, an outer side wall, a first side wall, and a second side wall. The inner side wall corresponds to an inner side of a curve of the curved portion. The outer side wall corresponds to an outer side of the curve of the curved portion. A thickness of the inner side wall is larger than a thickness of the outer side wall. In sectional view of the main body perpendicular to the longitudinal direction, each of a length of the first side wall and a length of the second side wall is longer than each of a length of the inner side wall and a length of the outer side wall.

Abstract: A tractor includes a working motor, a work machine including a roller configured to rotate by an output from the working motor, a support mechanism configured to support the work machine such that a working posture and a retracting posture are achievable, and a control device. The control device executes: an adherence amount acquisition process of acquiring an estimated adherence amount as an estimated value for the amount of mud attached to the roller; and a mud removal process of, when the estimated adherence amount is equal to or more than a determination adherence amount, removing the mud from the roller by driving the working motor in a state where the work machine takes the retracting posture.

Abstract: An ethylene-?-olefin copolymer capable of implementing formation of a film having excellent slipperiness and suppressed fish eyes, a method of producing the ethylene-?-olefin copolymer, an ethylene-based resin composition containing the ethylene-?-olefin copolymer, and a film containing the ethylene-?-olefin copolymer or the ethylene-based resin composition. An ethylene-?-olefin copolymer according to the present invention has: a monomer unit (1) based on ethylene; and a monomer unit (2) based on an ?-olefin having 3 to 20 carbon atoms, wherein a branching parameter is 0.70 to 0.90, and a light scattering area ratio is 1.60 to 3.60.

Abstract: There is provided a thermoplastic elastomer composition from which a molded article having an appearance suitable for non-painting use can be produced. In the thermoplastic elastomer composition containing at least two olefin polymers, a content of an insoluble component in ortho-dichlorobenzene at 140° C. is 20 wt % to 50 wt % and an isothermal crystallization time measured at 130° C. is 300 seconds or longer.

Abstract: An etching method for etching an organic film on a substrate inside a processing container includes controlling a temperature of the substrate to be at most ?35° C., and supplying a gas containing O into an inside of the processing container.

Abstract: A film forming method of forming a predetermined film on a substrate by PEALD includes: adsorbing a precursor on the substrate; and forming plasma from a modifying gas and modifying the precursor adsorbed on the substrate with radicals contained in the plasma. Here, the modifying of the precursor includes supplying a radio frequency power having an effective power smaller than 500 W to a plasma source configured to form the plasma from the modifying gas.

Abstract: A film forming apparatus configured to form a predetermined film on a substrate by PEALD includes a processing container configured to airtightly accommodate the substrate; and a placing table on which the substrate is placed within the processing container. The processing container includes an exhaust opening through which an inside of the processing container is exhausted; an exhaust path configured to connect the exhaust opening and a processing space above the placing table within the processing container; and a partition wall configured to separate a processing space side from an exhaust opening side in the exhaust path. The partition wall includes a flow path configured to connect the processing space side and the exhaust opening side, and the partition wall is formed such that the exhaust opening side is not seen from the processing space side when an extension direction of the exhaust path is viewed from a top.

Abstract: An ethylene-?-olefin copolymer capable of implementing formation of a film having excellent slipperiness and suppressed fish eyes, a method of producing the ethylene-?-olefin copolymer, an ethylene-based resin composition containing the ethylene-?-olefin copolymer, and a film containing the ethylene-?-olefin copolymer or the ethylene-based resin composition. An ethylene-?-olefin copolymer according to the present invention has: a monomer unit (1) based on ethylene; and a monomer unit (2) based on an ?-olefin having 3 to 20 carbon atoms, wherein a branching parameter is 0.70 to 0.90, and a light scattering area ratio is 1.60 to 3.60.

Abstract: There is provided a thermoplastic elastomer composition from which a molded article having an appearance suitable for non-painting use can be produced. In the thermoplastic elastomer composition containing at least two olefin polymers, a content of an insoluble component in ortho-dichlorobenzene at 140° C. is 20 wt % to 50 wt % and an isothermal crystallization time measured at 130° C. is 300 seconds or longer.

Abstract: An etching method for etching an organic film on a substrate inside a processing container includes controlling a temperature of the substrate to be at most ?35° C., and supplying a gas containing O into an inside of the processing container.