Abstract: Embodiments of the present disclosure provide a language escape method, an apparatus, and a device and a storage medium. The method includes: splitting a target statement acquired to obtain at least one target substatement; determining a keyword type and a keyword clause contained in the target substatement; correcting the keyword clause in the target substatement according to a semantic constraint rule corresponding to the keyword type contained in the target substatement; and combining the corrected target substatement, and generating an executable machine language. The above method can effectively improve the accuracy of natural language escape and the work efficiency of a user using database query, and at the same time, reduce the technical ability requirements for the staff using database query.

Abstract: Adsorbents for the removal of organic compounds from aqueous solutions and methods of making and using the adsorbents are provided. The adsorbents comprise composite particles based on crumpled 3D graphene oxide (GO) in which a mixture of inorganic nanoparticles that are photocatalytically active for the degradation of adsorbed organic contaminants and volume-expanding nanoparticles are dispersed.

Abstract: Provided are a transaminase mutant and an application thereof. The transaminase mutant has an amino acid mutation based on a sequence shown in SEQ ID NO: 1, the amino acid mutation being a single position mutation from among W60Y, Y168A, V379W, V379L, V379M, C418Q and C418W or a combination thereof. The activity, stability, and tolerance to temperature, pH and organic solvents of such transaminase mutants are improved. The present application solves the problem of poor tolerance of extreme environments by transaminase in the prior art, and is suitable for the field of enzyme engineering.

Abstract: Described herein are an immobilized enzyme, and a preparation method therefor and a use thereof. The immobilized enzyme includes activated PEI and an enzyme covalently bonded to the activated PEI, where the enzyme is selected from any one of a transaminase, a ketoreductase, a monooxygenase, an ammonia lyase, an ene-reductase, an imine reductase, an amino acid dehydrogenase and a nitrilase.