Abstract: Embodiments of the present disclosure relate to a method, a device, and a computer program product for executing computer programs. The method includes implementing multiple executions of a deep neural network that includes a hooking portion outside a trusted execution environment (TEE), wherein an operator in the hooking portion, when executed outside the TEE, invokes a corresponding execution operator in the TEE. During the period, the method includes determining, on the basis of the invocation of the corresponding execution operator in the TEE by the operator in the hooking portion, a computation graph corresponding to the hooking portion. The method further includes executing, on the basis of the computation graph, the execution operator corresponding to the hooking portion in the TEE during the execution of the deep neural network after the multiple executions.

Abstract: A method of preparing layered hydrotalcite-like PVC heat stabilizer from vermiculite is disclosed, including the following steps. Vermiculite is pretreated to prepare nano scale vermiculite flakes. Fluoride, ammonia and water are added, and layered powder layered hydrotalcite-like compound and silica product are prepared through a series of reactions such as ultrasonic dispersion, which realizes the preparation of vermiculite functional products, and is applied to PVC products to improve the heat stability of PVC. The disclosure can directly prepare vermiculite base layered powder products, has the function of stripping layered vermiculite, and has the advantages of low reaction temperature and low energy consumption. In addition, the treatment agent fluoride can be recycled and reused, which is suitable for industrial production.

Abstract: A method for extracting and separating salt alkali from saline alkali soil and soil improvement is disclosed. A foundation pit, square convex edge and cylindrical partition are arranged on a saline alkali land. Nitric or phosphoric acid solution is added to obtain a saline alkali pool. A trench is set around, and/or, a cylinder is set in the center of saline alkali pool. The evaporating material is prepared from vermiculite, laid on plastic wrapping material, and/or added into the cylinder. The salt alkali is precipitated and enriched through natural evaporation. The evaporating material enriched with salt alkali is taken out to be dissolved, separated and washed to obtain saline alkali solution and vermiculite or evaporating material. The vermiculite material is returned for reuse, and the above process is repeated. Alkali solution and intercalation agent are added into saline alkali solution to react and crystallize to obtain functional materials.

Abstract: The present invention teaches an ethanol modifier and a clean ethanol fuel comprising the modifier. The ethanol modifier comprises the following components in stated weight percentages: sugar remover 12-17%; emulsifier 2-5%; antioxidant 2-6%; preservative 2-6%; antiaging agent 3-8%; cleaning agent 1-3%; anti-wearing agent 7-10%; combustion promoter 12-15%; octane enhancing additive 22-28%; and compatibilizer 18-30%. All of the components are commercially-available and readily prepared. The clean ethanol fuel comprising the ethanol modifier of the present invention is better than the national 93 octane gasoline standard, and can satisfy the European IV discharge standard.