Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting layer provided between the anode and the cathode, in which the emitting layer contains a compound M3 represented by a formula (11), (12) or (13) and a delayed fluorescent compound M2, the compound M3 and the compound M2 are different in structure, and a singlet energy S1(M3) of the compound M3 and a singlet energy S1(M2) of the compound M2 satisfy a relationship of a numerical formula (Numerical Formula 1) below. In the formulae (11), (12) and (13), one of carbon atoms banded to R25, R27 and R28 is bonded to *1. One of carbon atoms and the like bonded to R31 to R38 and the like is bonded to *.

Abstract: Provided is a crimped fiber constituted of the following first component and second component, wherein the first component is a propylene-based resin composition containing a propylene-based polymer (1-A) in which a melting point (Tm-D) obtained under a specified condition exceeds 120° C. and a propylene-based polymer (1-B) satisfying the conditions that (a) a weight average molecular weight (Mw) is 10,000 to 200,000, (b) a molecular weight distribution (Mw/Mn) is less than 4.0, and (c) a melting point (Tm-D) obtained under a specified condition is 0 to 120° C.; and the second component is a propylene-based polymer (2) in which a melt flow rate (MFR) under the foregoing measurement condition is 1 g/10 min or more and 2,000 g/10 min or less, and a melting point (Tm-D) observed under the foregoing measurement condition by using a differential scanning calorimeter (DSC) exceeds 120° C., or a propylene-based resin composition containing the propylene-based polymer (2).

Abstract: The invention provides a lubricating oil composition for an engine made of aluminum alloy containing a base oil, a succinimide compound, and a thioheterocyclic compound represented by the following formula (I) and has a sulfur content of 0.10 mass % to 1.00 mass % based on the total amount of the composition, and a phosphorus content and a sulfated ash content, based on the total amount of the composition, falling within specific ranges, and a lubrication method employing the composition. The composition exhibits excellent wear resistance to aluminum alloy sliding parts of engines and can considerably reduce the high-phosphorus ZnDTP content and the metallic detergent content, while excellent wear resistance to aluminum alloy is maintained.