Abstract: A system and method for authentication code generation based on adversarial machine learning are provided in this disclosure. The method includes a defensive authentication code generation system, an authentication code formation module, an authentication code scheduling module, an authentication-code adversarial processing center, an attack sample generation module, a verification and error reporting system, a division module, a grouping and distribution system, a category checking module, a data recording unit, a detection module and an integration terminal. In the system and method for authentication code generation based on adversarial machine learning according to the disclosure, attack scenes are simulated for continuous training for the authentication code, error-reporting data are recorded and optimized into the defensive authentication code generation system, so as to improve defense performance of the authentication code.

Abstract: A liquid explosive for in-situ explosive fracturing in low-permeability oilfields and application thereof are provided. The liquid explosive includes raw materials in parts by mass: a main explosive with positive oxygen balance, a guest regulator and isolation microcapsules; the main explosive with the positive oxygen balance includes raw materials in parts by mass: monomethylamine nitrate, ammonium nitrate, sodium nitrate, water, guar gum, sodium nitrite, a high-temperature resistant regulator with a low detonation velocity and a surfactant; the guest regulator includes raw materials in parts by mass: a reducing agent and a density regulator; the isolation microcapsules include raw materials in parts by mass: porous hollow microbeads, a pore plugging agent and wall materials of pressure-resistant microcapsules; the guest regulator exists in the porous hollow microbeads of the isolation microcapsules.

Abstract: A liquid explosive for in-situ explosive fracturing in low-permeability oilfields and application thereof are provided. The liquid explosive includes raw materials in parts by mass: a main explosive with positive oxygen balance, a guest regulator and isolation microcapsules; the main explosive with the positive oxygen balance includes raw materials in parts by mass: monomethylamine nitrate, ammonium nitrate, sodium nitrate, water, guar gum, sodium nitrite, a high-temperature resistant regulator with a low detonation velocity and a surfactant; the guest regulator includes raw materials in parts by mass: a reducing agent and a density regulator; the isolation microcapsules include raw materials in parts by mass: porous hollow microbeads, a pore plugging agent and wall materials of pressure-resistant microcapsules; the guest regulator exists in the porous hollow microbeads of the isolation microcapsules.

Abstract: The present invention discloses a type of alloying fine adjustment method in which alloy materials are pulverized into micropowder and fed via the conventional powder spraying system; the said alloy materials are fed into the upper part of the spraying tank of the spraying system whose spraying pipelines are connected to the aerated bricks at the bottom of the molten steel container. Based on the existing argon blowing and mixing system, argon is taken as the carrier and used to pressurize the alloy powders into the aerated bricks at the bottom of the molten steel container via the spraying system and further into the molten steel container for the sake of alloying fine adjustment. After the alloy powders are fed, continue blowing and mixing argons until the alloy powders and the molten steels are evenly mixed in the molten steel container to complete the alloying process. This method features such advantages as short alloying time, good alloying effects, high yield of alloys and absence of pollution.

Abstract: The present invention discloses a type of alloying fine adjustment method in which alloy materials are pulverized into micropowder and fed via the conventional powder spraying system; the said alloy materials are fed into the upper part of the spraying tank of the spraying system whose spraying pipelines are connected to the aerated bricks at the bottom of the molten steel container. Based on the existing argon blowing and mixing system, argon is taken as the carrier and used to pressurize the alloy powders into the aerated bricks at the bottom of the molten steel container via the spraying system and further into the molten steel container for the sake of alloying fine adjustment. After the alloy powders are fed, continue blowing and mixing argons until the alloy powders and the molten steels are evenly mixed in the molten steel container to complete the alloying process. This method features such advantages as short alloying time, good alloying effects, high yield of alloys and absence of pollution.