4results about How to "Change internal structure" patented technology

The invention relates to the technical field of biology, in particular to a method for solid state fermentation of bagasse by using white rot fungi, which comprises the following steps: (1) activation and propagation of strains: pouring the white rot fungi into a PDA culture medium for activation and propagation; (2) raw material preparation: air-drying fresh bagasse, adding water to adjust the water content of the bagasse to 60-70%, and adjusting the pH to 4-6 with glacial acetic acid; and (3) preparing the bagasse feed, namely mixing the white rot fungi subjected to expanding culture according to 1-5% of the weight of an air-dried substance with bagasse of which the initial pH is adjusted to be 4-6, adding 1-5% of soluble sugar, and fermenting for 10-45 days to obtain the fermented bagasse feed. According to the white rot fungus fermented bagasse prepared by the method disclosed by the invention, the hemicellulose content of the bagasse can be reduced to 26.62%-22.45%, the lignin content can be reduced to 10.67%-8.66%, the crude protein content of the bagasse can be increased to 1.61%-2.12%, the lactic acid content can be increased to 26.57 mg / L-181.69 mg / L, and high-quality feed application of the bagasse can be realized.

The present invention relates to the technical field of damage test equipment, and in particular to a real-time monitoring device and method for rock damage based on multiple detection couplings, wherein the real-time monitoring device for rock damage based on multiple detection couplings comprises a base, a shearing mechanism, a driving mechanism and a clamping mechanism symmetrically slidably arranged on the base, the two clamping mechanisms are used to clamp rock samples, the shearing mechanism is arranged between the two clamping mechanisms and is used to shear the rock samples, and the driving mechanism is used to drive the two clamping mechanisms to move closer to or away from each other; it also comprises an acoustic emission monitoring system, an ultrasonic detection system and a monitoring system, the acoustic emission monitoring system, the ultrasonic detection system and the monitoring system are used to monitor the state of the rock samples; one purpose is to solve the problem that the existing monitoring device cannot monitor the behavior of the rock sample under a complex stress state in real time; the second purpose is to propose a real-time monitoring method for rock damage based on multiple detection couplings.

This invention relates to the field of microwave absorbing materials technology, specifically to an iron-cobalt alloy carbon magnetoelectric composite microwave absorbing material, its preparation method, and its applications. The specific preparation method includes the following steps: using potassium ferricyanide as the carbon and nitrogen source, a co-precipitation reaction is carried out with a Co source and sodium citrate in a solvent system to prepare a Prussian blue analog; then, under a protective atmosphere, the Prussian blue analog is pyrolyzed at 400–600℃, causing Co nanoparticles to be loaded onto the surface of a carbon-nitrogen matrix, resulting in the iron-cobalt alloy carbon magnetoelectric composite microwave absorbing material. This invention mainly uses the C≡N groups in the metal coordination bonds as the carbon and nitrogen sources, and Co nanoparticles as magnetic particles. By controlling the pyrolysis temperature, the microstructure and internal structure of the product are altered, thereby controlling the electromagnetic parameters of the material and obtaining an absorbing material with good impedance matching and attenuation performance.

The utility model relates to bearing processing technical field, concretely is a kind of positioning tool for bearing processing, it includes: disc body, including three-jaw chuck, the surface of three-jaw chuck is provided with locating dog; positioning mechanism, including locating knob, the surface of three-jaw chuck is rotatably connected in locating knob.The utility model is connected through locating knob and worm, rotates locating knob and drives worm rotation, to drive worm gear to rotate on the surface of fixed shaft, then through the connection of worm gear and connecting threaded rod, the action position of adjusting block can be adjusted by connecting threaded rod, through the connection of adjusting block and hinge lever, the movable block can be moved to the side away from adjusting block by hinge lever with the movement of adjusting block, then through the connection of movable block and locating dog, the radial positioning of bearing can be carried out, to change the internal structure of positioning mechanism in this way, reach the effect of improving the service life of three-jaw chuck.