Abstract: A metabolic enzyme-induced micro-nano plastic particle biodegradation method and a product analysis method therefor are disclosed. The biodegradation method includes the following steps: step (1), cutting an appropriate quantity of plastic products into small pieces; step (2), placing the plastic products in a ball mill tank and milling the plastic products in vacuum in a ball mill; step (3), weighing and dispersing the milled plastic sample with water to prepare a dispersion with a concentration; step (4), mixing the micro-nano plastic dispersion with a metabolic enzyme solution, and placing the mixed solution in a vortex oscillator for mixing well; and step (5), incubating the mixed solution in a waterproof incubator. The present invention provides for the first time a method for biodegradation and metabolism of micro-nano plastics under mild conditions and under the induction of a metabolic enzyme, namely, glutathione S-transferase.

Abstract: This disclosure is directed to solutions of detecting and classifying wafer defects using machine learning techniques. The solutions take only one coarse resolution digital microscope image of a target wafer, and use machine learning techniques to process the coarse SEM image to review and classify a defect on the target wafer. Because only one coarse SEM image of the wafer is needed, the defect review and classification throughput and efficiency are improved. Further, the techniques are not distractive and may be integrated with other defect detecting and classification techniques.

Abstract: A metabolic enzyme-induced micro-nano plastic particle biodegradation method and a product analysis method therefor are disclosed. The biodegradation method includes the following steps: step (1), cutting an appropriate quantity of plastic products into small pieces; step (2), placing the plastic products in a ball mill tank and milling the plastic products in vacuum in a ball mill; step (3), weighing and dispersing the milled plastic sample with water to prepare a dispersion with a concentration; step (4), mixing the micro-nano plastic dispersion with a metabolic enzyme solution, and placing the mixed solution in a vortex oscillator for mixing well; and step (5), incubating the mixed solution in a waterproof incubator. The present invention provides for the first time a method for biodegradation and metabolism of micro-nano plastics under mild conditions and under the induction of a metabolic enzyme, namely, glutathione S-transferase.