Abstract: A self-anchored piling sediment sampler is mainly composed of a sampling tube mechanism, an anchor rack mechanism and a cable. A drainer is designed for automatic drainage and air seal, so that an anchor socket can form a good anchoring condition with sediments during collection, thereby providing a stable sampling condition in cooperation with adjustable self gravity. The drainer is also applied in the sampling tube mechanism, thereby facilitating collection and seal of sediment samples. At the end of sampling, a water injector can eliminate suction force of the sediments and alleviate resistance in a lifting process. The cable is fixed to an outer sampling tube by first fixed pulleys, clamping hooks and second fixed pulleys placed on fixing rods so as to realize the conversion of the pulling force into the pressure on the sampling tube and provide a driving force for sampling.

Abstract: The present disclosure provides an organic electroluminescent array substrate and a display device comprising the organic electroluminescent array substrate. The organic electroluminescent array substrate comprises: a pixel array, in which each pixel has a light-emitting region; and a pixel definition layer for defining the light-emitting region of each pixel, wherein the pixel definition layer has a volume resistivity of 107 to 1010 ?·m.

Abstract: The present disclosure provides an organic electroluminescent array substrate and a display device comprising the organic electroluminescent array substrate. The organic electroluminescent array substrate comprises: a pixel array, in which each pixel has a light-emitting region; and a pixel definition layer for defining the light-emitting region of each pixel, wherein the pixel definition layer has a volume resistivity of 107 to 1010?•m.

Abstract: A self-anchored piling sediment sampler belongs to the technical fields of environmental monitoring, environmental government and sediment sample collection. The sampler is mainly composed of a sampling tube mechanism, an anchor rack mechanism and a cable. A drainer is designed to realize automatic drainage and air seal, so that an anchor socket can form a good anchoring condition with sediments during collection, thereby providing a stable sampling condition in cooperation with adjustable self gravity. The drainer is also applied in the sampling tube mechanism, thereby facilitating collection and seal of sediment samples. At the end of sampling, a water injector can eliminate suction force of the sediments and alleviate resistance in a lifting process. The cable is fixed to an outer sampling tube by fixed pulleys A, clamping hooks and fixed pulleys B placed on fixing rods so as to realize the conversion of the pulling force into the pressure on the sampling tube and provide sampling power.