Abstract: A method for controlling brittle inclusions in cord steel. The method includes the following steps: adding alloys at the moment of tapping in a furnace primary smelting stage and adding silicon carbide and synthetic slag to a top of ladle slag at the end of tapping to form slag; adding the alloys in a refining stage and feeding carbon wires; and adding lime, silicon carbide, the synthetic slag, and performing electrification to slag, where the slag composition meets the following conditions: CaO/SiO2=0.9-1.2, Al2O3?5%, MgO 4-8%, [MnO+T·Fe]2-5%.

Abstract: A preparation method of a Mn-MOF-based cold-adapted nanozyme and a preparation method thereof. The method includes: preparing a Mn(CH3COO)3·2H2O solution by fully dissolving a manganese-containing precursor Mn(CH3COO)3·2H2O in a mixed solution of an alcohol and distilled water; wherein the alcohol is ethanol or methanol; preparing a benzenetricarboxylic acid solution by fully dissolving benzenetricarboxylic acid solid in the mixed solution of the alcohol and distilled water; reacting the Mn(CH3COO)3·2H2O solution with the benzenetricarboxylic acid solution sufficiently using co-precipitation; and centrifuging and removing a supernatant to obtain the MnBTC, where the MnBTC is nano-metal-organic framework (nano-MOF) with a particle size of less than 10 nm.

Abstract: The present invention discloses a method for synthesizing a new ferrihydrite nano-photosensitizer, comprising steps of: weighing 303 mg of Fe(NO3)3?9H2O solid dissolved fully in 30 ml of distilled water to prepare a 0.75 mM of Fe(NO3)3 solution in water; adding PEG solid to the solution in water by stirring to fully dissolve at a molar ratio of PEG to Fe3+ of 1:1-1:50; stirring the obtained solution under heating at 75° C. in a water bath for 10-50 minutes, and then immediately cooling in an ice bath after removing; centrifuging and washing the cooled mixed solution at high speed under low temperature with the supernatant discarded, to obtain pellets as PEG-modified ferrihydrite nanoparticles (PEG-Fns). The PEG-Fns synthesized in the present invention can be controllably induced and reduced by blue light to release Fe2+, and then produce ?OH through Fenton reaction of Fe2+ and H2O2 in the cell, which induces cell oxidative damage, thereby achieving controllable anticancer and antibacterial purposes.

Abstract: The present invention discloses a method for synthesizing a new ferrihydrite nano-photosensitizer, comprising steps of: weighing 303 mg of Fe(NO3)3.9H2O solid dissolved fully in 30 ml of distilled water to prepare a 0.75 mM of Fe(NO3)3 solution in water; adding PEG solid to the solution in water by stirring to fully dissolve at a molar ratio of PEG to Fe3+ of 1:1-1:50; stirring the obtained solution under heating at 75° C. in a water bath for 10-50 minutes, and then immediately cooling in an ice bath after removing; centrifuging and washing the cooled mixed solution at high speed under low temperature with the supernatant discarded, to obtain pellets as PEG-modified ferrihydrite nanoparticles (PEG-Fns). The PEG-Fns synthesized in the present invention can be controllably induced and reduced by blue light to release Fe2+, and then produce ?OH through Fenton reaction of Fe2+ and H2O2 in the cell, which induces cell oxidative damage, thereby achieving controllable anticancer and antibacterial purposes.