7results about How to "Shorten activation time" patented technology

The invention discloses a coal gangue microwave-chemical synergistic activation method and activated coal gangue, the coal gangue microwave-chemical synergistic activation method comprises the following steps: (1) crushing coal gangue to obtain a crushed product; (2) mixing the crushed product with a composite activator, and performing microwave treatment to obtain an activated product; the composite activating agent comprises waste alkali liquor, fly ash aluminum extraction residues and water glass; and (3) drying, cooling and grinding the activated product to obtain the activated coal gangue. The microwave-chemical synergistic activation method for the coal gangue is high in activation efficiency, efficient destruction of crystal lattices of coal gangue minerals is achieved through the synergistic effect of microwaves and the composite activating agent, the activation time is shortened, the silicon-aluminum dissolution rate is increased, the silicon dissolution rate reaches 80% or above, the aluminum dissolution rate reaches 70% or above, the problem that single chemical activation is low in efficiency is solved, and the method is suitable for industrial production. And the obtained activated coal gangue product has high activity.

The invention relates to the technical field of high-capacity lithium supplement of lithium ion batteries, in particular to a gradient coating and conductive bridging synergistic composite lithium supplement agent and a preparation method thereof. Aiming at the problem that the improvement thought of the existing lithium supplement agent is difficult to consider structural stability, efficient transmission and interface compatibility, the invention provides the following technical scheme: the lithium supplement agent comprises an inner core, a middle layer, a buffer layer and a chemical bridging conductive network which are sequentially arranged from inside to outside; the inner core is a metal oxide with high lithium content, and the middle layer is of a gradient structure; the buffer layer is made of flexible lithiated polymer gel; and the chemical bridging conductive network is formed by chemically bonding an aminated carbon material and the buffer layer through an amidation reaction. Through collaborative design of gradient coating, the doped transition layer and the chemical bridging conductive network, inner core volume expansion is adapted, ion and electron transmission is enhanced, interface impedance is reduced, interface optimization from the structure to transmission is achieved, and the first effect and the cycling stability of the battery are improved.

The application discloses a kind of based on surface acoustic wave activation electrochemical microorganism device and method, the device includes electrolytic cell main body, working electrode, surface acoustic wave excitation module;The working electrode, attached electrochemical microorganism;The surface acoustic wave excitation module, by applying alternating signal generates surface acoustic wave, surface acoustic wave spreads to working electrode area, and acts on the electrochemical microorganism attached on working electrode.The method includes that reference electrode, working electrode, counter electrode are accessed electrochemical workstation;Start surface acoustic wave excitation module, and alternating signal is applied to the interdigital transducer in this surface acoustic wave excitation module, for generating Rayleigh wave;Through peristaltic pump, bacteria liquid is placed into device, and after flowing through working electrode, it is discharged to sterile container, and this step is recycled 3-5 times.

The invention provides chymotrypsinogen and application thereof, and particularly relates to a protein tag for improving the activation efficiency of recombinant chymotrypsinogen. Compared with naturally extracted human chymotrypsinogen, the recombinant chymotrypsinogen fused with the protein tag has significantly improved activation efficiency. The invention also relates to a recombinant chymotrypsinogen containing the protein tag, a nucleic acid molecule for coding the recombinant chymotrypsinogen, a vector containing a nucleotide sequence of the nucleic acid molecule, a nucleic acid construct and a host cell. In addition, the invention also relates to a method for expressing the recombinant chymotrypsinogen.

The invention relates to the technical field of agricultural water and fertilizer retention materials, and particularly provides a preparation process of core-shell structure weather-proof straw-based water and fertilizer retention integrated granules. The method comprises the following steps: (A) straw pretreatment and microwave-assisted activation: A1, crushing straws to 20-40 meshes, adding urea accounting for 2% of the dry weight of the straws, adjusting the water content to 60%, carrying out high-temperature aerobic composting at 55-65 DEG C for 15-20 days, and screening to obtain a 40-80-mesh cellulose crude product; a2, adding a 5wt% sodium hydroxide aqueous solution according to 30% of the dry weight of the cellulose crude product, uniformly stirring, and treating for 5 minutes by using 300W microwaves; the water retention agent has the following beneficial effects that the inner core takes high-activity straw cellulose as a core, and the water retention rate is greater than or equal to 350 times; humic acid (fertilizer retention), lignin (controlled degradation) and sodium alginate (weather resistance) are integrated in the shell, the problem of function splitting of water retention, fertilizer retention and weather resistance is solved, the particles are resistant to exposure to the sun (without cracking within 3 months) and rain (the loss rate is smaller than or equal to 5%), and the water retention validity period is prolonged to 6-8 months.