Abstract: Colour component prediction method is provided, which includes that: first reference sample set corresponding to colour component to be predicted of coding block in video image is acquired; when available sample number in first reference sample set is less than preset number, preset component value is taken as predicted value corresponding to the colour component to be predicted; when available sample number in first reference sample set is not less than preset number, first reference sample set is screened to obtain second reference sample set; when available sample number in second reference sample set is equal to preset number, model parameter is determined through second reference sample set, and prediction model corresponding to colour component to be predicted is obtained based on model parameter, prediction model is used for prediction processing of colour component to be predicted to obtain predicted value corresponding to colour component to be predicted.

Abstract: The present disclosure relates to mesoporous silica wrapped nanoparticle composite nanomaterial, preparation method thereof, and use thereof. In the present disclosure, a nanoparticle is dispersed in an aqueous ethanol solution. Then, ammonia water is added to adjust the pH. After that, cetyltrimethylammonium bromide in an aqueous ethanol solution is added dropwise, and ultrasound is continued, before tetraethyl orthosilicate is added dropwise. The mixture is purified to produce a composite nanomaterial that is stable, controllable, and consistent in size; the shell of the composite nanomaterial is mesoporous silica, the core of the composite nanomaterial is a nanoparticle. Dual-core or triple-core nanoparticles of different kinds/functions can be wrapped into a single mesoporous silica shell to achieve multi-core wrapping. The method is universal and may be used to wrap various nanometers. The preparation procedure is environmentally friendly, efficient, and may be carried out at room temperature.

Abstract: A drip tight pump includes a top cover with an inlet port and an outlet port, a sealing mat, a valve plate with an inlet hole and an outlet hole, a water inlet one-way valve, a cup, a cylinder, a swing frame, a steel needle, a steel ball, an eccentric wheel, a bottom cover and a motor which are successively set. The drip tight pump also includes a first leak-proof member and/or a second leak-proof member between the top cover and the sealing mat. The drip tight pump can seal the outlet hole and the inlet port, so that to prevent the drip tight pump from dripping.

Abstract: A drip tight pump includes a top cover with an inlet port and an outlet port, a sealing mat, a value plate with an inlet hole and an outlet hole, a water inlet one-way value, a cup, a cylinder, a swing frame, a steel needle, a steel ball, an eccentric wheel, a bottom cover and a motor who are successively set. The drip tight pump also includes a first leak-proof member and/or a second leak-proof member between the top cover and the sealing mat. The drip tight pump can seal the outlet hole and the inlet port, so that to prevent the drip tight pump from dripping.