4results about How to "Control damage" patented technology

The application belongs to the technical field of two-dimensional materials, and relates to a method for preparing two-dimensional MXene materials through high-energy electric shock fluorinated salt etching in seconds, which comprises the following steps: 1) after grinding and mixing of a parent phase MAX powder and a fluorinated salt, the mixture is loaded into a quartz tube of a high-energy electric shock device, graphite electrodes are inserted into two ends of the quartz tube, and the material is compacted to be in close contact with the electrodes; 2) after completion of capacitor charging of the high-energy electric shock device, a discharge button is opened, high-energy electric shock is performed, the reaction is completed after flash phenomenon occurs, fluorinated salt is supplemented, and electric shock is repeated for 2-3 times; 3) the product after electric shock is ground and washed with acid, and after washing with deionized water until neutral, standing or centrifugal layering is performed, and the MXene two-dimensional material is obtained from the upper layer. Through high-energy electric shock, the reaction is completed in an instant, the comprehensive energy consumption is lower, and the etching efficiency is faster, and due to fast reaction time, high-temperature oxidation of the MXene can be effectively inhibited, and the application prospect is better.

The invention belongs to the technical field of medicines, and particularly discloses application of targeted mesenchymal stem cell NAT10 and RNA acetylation in inflammatory diseases. The invention reveals for the first time that NAT10 mediated ac4C modification is a key positive regulatory factor for regulating the immune function of mesenchymal stem cells (MSC), and an inflammatory environment can inhibit the pathway so as to cause weakening of the MSC function. Based on the discovery, NAT10 expression in the MSC is up-regulated through a genetic means, and the MSC with the enhanced function is prepared. The cell shows a higher ac4C acetylation level, and the expression of key immunosuppressive factors iNOS and COX2 and the secretion of products NO and PGE2 are remarkably improved, so that a stronger T cell inhibition capability is obtained. Animal experiments show that the MSC with the enhanced function shows a remarkably superior treatment effect compared with common MSC in disease models of inflammatory liver injury, periodontitis and the like.

A housing of a low-pressure compressor of an aircraft turbine engine is disclosed, said housing (1) comprising an annular wall (4) extending along a longitudinal axis of the housing (1), the annular wall (4) having a first annular section (7) intended to be positioned in unison with a rotor stage (10) of the compressor and a second annular section (9) intended to be positioned in unison with a stator stage (12) of the compressor, the first section (7) and the second section (9) are different from each other.