Abstract: A novel compound represented by the following Chemical Formula 1, and an organic light emitting device including the same.

Abstract: A compound of Chemical Formula 1: wherein: L1 and L2 are each independently a substituted or unsubstituted C6-60 arylene, each R1 is independently hydrogen, deuterium, halogen, cyano, or a substituted or unsubstituted: C1-60 alkyl, C2-60 alkenyl, C2-60 alkynyl, C3-60 cycloalkyl, C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S; one of Ar1 and Ar2 is a substituent of Chemical Formula 2, and the other is a substituted or unsubstituted C14-60 aromatic fused polycyclic ring: wherein: each X is independently N or CH, provided that at least one X is N; and Ar3 and Ar4 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or more of N, O and S, and the other substituents are as defined in the specification; and an organic light emitting device comprising the same.

Abstract: Provided is an organic light emitting device including a first organic material layer that comprises a compound of Formula 1: and a second organic material layer comprising a compound of Formula 2:

Abstract: The present specification relates to a compound of Chemical Formula 1 and an organic light emitting device including the same.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: [Chemical Formula 1] wherein: L1 is a direct bond or a substituted or unsubstituted arylene group; L2 is a substituted or unsubstituted arylene group; two or more of X1 to X3 are N and any remaining is CR?; Np is Chemical Formula 2: [Chemical Formula 2] wherein: the dotted lines “------” are positions of attachment of Chemical Formula 2 where one is bonded to L1 and the other is bonded to L2 of Chemical Formula 1; and the other substituents are as defined in the specification; and an organic light-emitting device including the same. A light emitting device that includes the compound of Chemical Formula 1 in an organic material layer exhibits high efficiency and long service life.

Abstract: A compound represented by Chemical Formula 1 and an organic light emitting device including the same are provided.

Abstract: An embodiment is a seat height gear system including a monopost apparatus configured to be mounted under a seat, the monopost apparatus comprising a lower post and an upper post, and a direct drive motor apparatus within the monopost apparatus, the direct drive motor apparatus including a motor and a gear unit, the gear unit including a pinion and a rack bar, the rack bar being configured to be engaged with the pinion, the motor being fixed to the lower post of the monopost apparatus, the pinion being coupled to the motor, the rack bar being fixed to an upper post of the monopost apparatus, the motor being configured to rotate the pinion, and the rack bar being configured to convert the rotation of the pinion into the linear motion.

Abstract: The present invention provides a novel compound represented by Chemical Formula 1 or a salt thereof and a pharmaceutical composition for treating lung cancer containing same. A pyrimidine derivative compound represented by Chemical Formula 1 effectively inhibits the growth of cancer cells with an ALK mutation and an EGFR mutation, thereby being effectively usable in the treatment of lung cancer.

Abstract: A phantom for evaluating a magnetic resonance spectroscopy (MRS) performance is provided. Specifically, a phantom for evaluating an MRS performance capable of quantitatively evaluating a resolution of a spectrum obtained when a chemical shift imaging MRS measurement process is performed is provided. The phantom evaluates MRS performance using a magnetic resonance imaging (MRI) apparatus, and includes: an external container having an opened upper end; internal containers which are disposed in the external container and constructed so as to include metabolites; and an external container cover for covering the upper end of the external container.

Abstract: A phantom for evaluating a magnetic resonance spectroscopy (MRS) performance is provided. Specifically, a phantom for evaluating an MRS performance capable of quantitatively evaluating a resolution of a spectrum obtained when a chemical shift imaging MRS measurement process is performed is provided. The phantom evaluates MRS performance using a magnetic resonance imaging (MRI) apparatus, and includes: an external container having an opened upper end; internal containers which are disposed in the external container and constructed so as to include metabolites; and an external container cover for covering the upper end of the external container.