35results about How to "No heat treatment" patented technology

The invention discloses an estrogen hapten, a complete antigen and a preparation method thereof. The method comprises: reacting estrols and monochloroacetate in an organic solvent at normal temperature and in the presence of a catalyst, terminating the reaction with ice water, taking the unreacted estrols of the organic extractant, and using acid Acidification produces a white precipitate, which is the estrol hapten. By optimizing the catalyst and reaction time in the synthesis, this method provides a simple method without heating and controlling the pH, and the hapten can be obtained in a short time; the unreacted product and the substrate are used to remove the unreacted hapten by using the extraction method. At the same time, the obtained estrols can continue to be used through recovery, saving the reaction substrate; finally, the method of crystallization by hydrochloric acid acidification can obtain high-purity estrols haptens; Haptens are linked to carrier proteins to obtain complete antigens.

The invention relates to a controlled rolling and cooling method for low-yield ratio low welding crack-sensitivity steel. The steel comprises the compositions of, by weight, less than or equal to 0.10% of C, 0.30-0.50% of Si, 1.2-1.8% of Mn, less than or equal to 0.020% of P, less than or equal to 0.010% of S, 0.010-0.050% of Nb, 0.01-0.03% of Ti, less than or equal to 0.30% of Cr, 0.02-0.06% of Alt, less than or equal to 0.0005% of B, and the balance Fe and unavoidable impurity elements, wherein C*Nb is equal to 0.18-0.22ppm, and Pcm is less than or equal to 0.20%. A steel plate comprises 45-55% of ferrite, 40-50% of bainite, and a small amount of pearlite, and the yield ratio of the steel plate is less than or equal to 0.85%. The steel plate produced by the controlled rolling and coolingmethod has low cost and high production efficiency and the plate shape is easy to control.

The invention discloses a preparation method of a cold patching material for asphalt pavement pit slots, belonging to the technical field of preparation of pavement patching materials. The preparation method comprises the steps of firstly, filtering waste engine oil, then settling the filtered waste engine oil by using activated clay and a sodium carbonate solution, and absorbing impurities; standing and collecting an upper layer oil phase; mixing the obtained pretreated waste engine oil with diesel oil to prepare a diluent; after that, crushing basalt ore, carrying out vibration screening treatment on the crushed basalt ore, and mixing the crushed basalt ore as required to prepare asphalt aggregate gravel; using sodium-based bentonite to modify petroleum asphalt, then stirring with the diluent and thermoplastic styrene-butadiene rubber to prepare modified cold patching asphalt liquid; finally, mixing the obtained modified cold patching asphalt liquid with the asphalt aggregate gravel, silicone oil, an anti-stripping agent, and the like, and stirring and bagging to obtain the cold patching material for the asphalt pavement pit slots. The cold patching material prepared by the method overcomes the defects that a cold patching asphalt mixture is easy to harden, poor in durability and low in workability, and has the characteristics of being capable of patching at any time, good in workability and good in storage stability, thus having wide application prospect.

The invention discloses a preparation method of a south jerusalem artichoke No.9 solid enzyme. The preparation method comprises the steps of pretreatment of jerusalem artichoke, blending of raw materials, preparation of a fermenting agent, anaerobic fermentation, dry powder preparation and blending. The method is mainly realized by a natural microecological strain fermenting technology and a raw material solid multi-stage temperature-controlled fermentation technology. The solid enzyme prepared by the preparation method disclosed by the invention has the advantages of convenience in carrying, easiness for storage, convenience in eating, no preservative, no high-temperature treatment, long shelf life, no alcohol, low sugar content, high content of probiotics, and excellent color, aroma, flavor and mouthfeel, and is a high-quality solid enzyme integrating nutrition with health care.

A method for processing zongzi without wrapping leaf comprises the following steps: immersing a zongzi wrapping leaf in clear water, and boiling and extracting twice to prepare a zongzi wrapping leaf liquid; adding one or more than two components containing 2-10wt% of soluble dextrin, 0.05-1.0wt% of liquid sucrose ester or 10-100wt% of sweetener into the zongzi wrapping leaf liquid to blend the zongzi wrapping leaf liquid, calculated by the weight of the zongzi wrapping leaf liquid; adding the blended zongzi wrapping leaf liquid 1.5 times of the weight of glutinous rice, and immersing the glutinous rice to a water content of 50-60%; filling the soaked rice quantitatively into a triangle food cooking bag, compacting, and vacuumizing; cooking the glutinous rice in a high-pressure digester to a cooked state, carrying out back pressure cooling to the temperature of the zongzi reaching 50 DEG C, and taking the zongzi out of the digester; and compacting the zongzi in a conical die for molding. The finished product provided by the invention has leaf nutrition and flavor better than those of a traditional zongzi wrapped by leaf, and greatly reduces the labor intensity, improves the production efficiency, and can realize the mechanization, automation and mass production; and after storing at room temperature for 12 months, the finished product still has soft and waxy taste, can be eaten instantly without heating, and is suitable for usage in tourism, leisure, outdoor, aviation and space.

The invention discloses a zinc-silver accumulator capable of work at a low temperature. A cell is formed by a positive electrode (7), a diaphragm (4) and a negative electrode (5); the cell and an electrolyte (6) are encapsulated in an encapsulation bag (8); the positive electrode (7) is welded with a positive busbar (2); the negative electrode (5) is welded with a negative busbar (1); the positive busbar (2) and the negative busbar (1) are fixedly provided with insulating tapes (3); the electrolyte (6) is a KOH (potassium hydroxide) aqueous solution of which the concentration is 25-45%; LiOH (lithium hydroxide) with the mass percent being 1.2-2.6% added to the electrolyte (6) solution is taken as an electrolyte additive; and mercuric oxide with the mass percent being 1.0-4.0% added to a negative active substance is taken as a zinc electrode additive. At the temperature of 5 DEG C, the zinc-silver accumulator can work reliably without heating before use.