52results about How to "Moderate grain" patented technology

The invention relates to a soil conditioner using biomass power plant ash as a raw material, comprising 80-94 wt% of biomass power plant ash, 5-10 wt% of saw powder, and 1-10 wt% of binding agent. The preparation method comprises the following steps: (1) mixing the raw materials in proportion, adding 0.15-0.30 times of water, and uniformly stirring; (2) carrying out granulation; (3) drying after granulation until the water content being 8-10 wt% at a temperature of 70-150 DEG C; and (4) sieving, weighing and bagging for subsequent use. The application method is characterized by using 50-150 kg of the soil conditioner in per 667 m<2> acid soil. According to the invention, the acid-base balance of the soil is greatly improved, the medium trace elements taken away from the soil in harvesting biomass are supplemented, the reasonable circulation of nutritive components is realized, the growth of plants is promoted; simultaneously the sustained release of mineral elements is achieved, and the utilization rate of fertilizers is greatly increased.

The invention discloses a europium doped bismuth ferrite film, which comprises a silicon substrate with lanthanum nickelate as the buffer layer and a target material with a composition formula of Bi1-xEuxFeO3 (with x being greater than or equal to 0 and smaller than or equal to 0.07). The target material is deposited on the substrate. The invention also discloses a preparation method of the europium doped bismuth ferrite film. The method consists of: cleaning the substrate, placing the target material and the substrate in a film coating chamber, adjusting the pressure to less than 5*10<-4>Pa, raising the temperature of the substrate to 700DEG C at a speed of 10DEG C per minute; adjusting the sputtering pressure to 10Pa, maintaining the state for 10min under 700DEG C and an oxygen pressure of 10Pa, making adjustment to invert the substrate and rotate the target material in forward direction, keeping a 6cm distance between the substrate and the target material, employing a pulse laser to conduct film deposition for 60min and performing heat preservation for 30min, then conducting cooling at a speed of 20DEG C per minute to 200DEG C, and taking out the product, thus obtaining the europium doped bismuth ferrite film. The preparation method provided by the invention has the advantages of easily controllable reaction process and easily available raw materials. The europium doped bismuth ferrite film has significantly improved crystallization properties and electric leakage properties, and a smaller optical band gap, thus improving the photovoltaic properties of BiFeO3 films. The europium doped bismuth ferrite film has wide application prospects.

The invention provides a method for preparing a biapenem bulk drug, the method comprising the following steps: 1) at a certain dissolution temperature T 1 2) The crude biapenem aqueous solution obtained in step 1) is controlled at T 1 or cool down to T 2 , add activated carbon, stir to decolorize, filter, and cool the filtrate to T 3 Standby; 3) the filtrate of step 2) gained is added dropwise to pre-cooling to T 4 4) growing crystals; 5) separating, washing and drying the crystals precipitated in step 4) to obtain the biapenem bulk drug.

The invention relates to a manufacturing method for a seamless pipe, and in particular to a manufacturing method for a high manganese steel seamless pipe with high strength and corrosion resistance. The manufacturing method for the high manganese steel seamless pipe comprises the following steps that a high manganese steel ingot comprising, by weight percentage (%), 0.08-0.60% of C, 0.10-3.60% of Si, 15.00-28.00% of Mn, 0.02-4.50% of Al, no more than 0.045% of P, no more than 0.045% of S, 0.01-0.30% of Nb, 0.001-0.040% of N, 0.01-0.20% of Ti, 0.01-0.20% of V, and the balance Fe and inevitable impurities is kept warm for 6-8 hours at the temperature of 1150-1250 DEG C, the steel ingot is hot-forged into a cylindrical blank at the temperature of 850-1150 DEG C, then the cylindrical blank is covered with a heat preservation cover quickly for slow cooling, and the cylindrical blank is air-cooled to the room temperature 48 hours later by hoisting the cover away.