Abstract: Provided are a composite coating, a piston, an engine, and a vehicle. The composite coating comprises a metal bonding layer, a transition layer, a ceramic layer, and a sealing layer which are sequentially laminated, wherein the metal bonding layer is configured to be bonded with a piston basic body, the metal bonding layer is a rare earth metal modified bonding layer, and the transition layer is a rare earth metal modified zirconia layer.

Abstract: Provided are a composite coating, a piston, an engine, and a vehicle. The composite coating comprises a metal bonding layer, a transition layer, a ceramic layer, and a sealing layer which are sequentially laminated, wherein the metal bonding layer is configured to be bonded with a piston basic body, the metal bonding layer is a rare earth metal modified bonding layer, and the transition layer is a rare earth metal modified zirconia layer.

Abstract: The present invention provides methods and kits for assessing whether a subject is afflicted with an FR?-expressing cancer, methods and kits for predicting the progression of ovarian cancer in a subject afflicted with an FR?-expressing cancer, methods and kits for assessing the level of risk that a subject will develop an FR?-expressing cancer, and methods of stratifying a subject with an FR?-expressing cancer into cancer therapy groups. The methods involve determining the level of folate receptor alpha (FR?) which is not bound to a cell in a sample derived from the subject and comparing this level with the level of FR? in a control sample.