7results about How to "Increase the allocation ratio" patented technology

The invention provides a DAPhen ligand, a preparation method and application thereof, and a method for separating lanthanide elements and actinide elements from waste liquid, and belongs to the technical field of extraction separation. Starting from the molecular structure design of the ligands, the novel DAPhen ligands are developed by designing the structures of the ligands, the ligands ensure the high distribution ratio of Eu, meanwhile, the introduction of the water-soluble ligands also ensures the efficient reverse extraction of Am, the lanthanum actinide separation factor SFEu / Am of the four DAPhen ligands is up to 320, and the separation effect is good. In addition, the ligand is good in water solubility and extraction kinetics, and balance can be achieved within 10 min. The invention provides a new thought for deeply understanding lanthanum actinide separation, and provides technical support for establishing an advanced spent nuclear fuel post-treatment system and efficiently utilizing minor actinide elements.

The invention provides a DEG-PTD ligand, a preparation method and application thereof, and a method for separating lanthanides and actinides from waste liquid, and belongs to the technical field of extraction separation. Starting from the molecular structure design of the ligand, the novel DEG-PTD ligand is developed by designing the structure of the ligand, the ligand not only ensures the high distribution ratio of Eu, but also ensures the efficient reverse extraction of Am by introducing the water-soluble ligand, 99% of 241 Am loaded in the organic phase of the TODGA ligand can be reversely extracted into the water phase, the lanthanum actinide separation factor SFEu / Am of the DEG-PTD ligand is more than 200, and the stability of the DEG-PTD ligand is greatly improved. The separation effect is good. In addition, the ligand is good in water solubility and extraction kinetics, the water solubility is extremely good, and balance can be achieved within 5 min. The invention provides a new thought for deeply understanding lanthanum and actinide separation, and provides important support for sustainable development of nuclear energy and scientific treatment and safe management of existing radioactive wastes.

The invention belongs to the technical field of crop cultivation, discloses a method for cotton to resist cold damage and drought and reduce yield loss, and particularly provides application of trehalose to improvement of resistance of cotton to low-temperature cold damage and drought stress. The method comprises the following steps: firstly, soaking cotton seeds with trehalose with a proper concentration so as to improve the seedling rate of cotton under low-temperature cold injury; secondly, spraying is conducted on cotton in the seedling stage and the bud stage under drought stress. The two trehalose treatment methods can promote the growth of cotton, increase the biomass accumulation, improve the distribution proportion of biomass in buds, flowers and bolls, improve the yield and reduce the loss of cotton yield caused by low-temperature cold injury stress and drought stress.

The present invention discloses a method and device for deoxidation in a melt furnace at the end of steelmaking, and belongs to the field of metallurgical technology. Before stopping oxygen blowing at the end of oxygen steelmaking blowing in a top-blown converter or electric arc furnace with oxygen blowing above the molten pool, the present invention adds a powder spraying function to the existing steelmaking furnace bottom blowing inert gas stirring system, and transforms it into a stirring / powder spraying system device as shown in Figure 1 or 2. The stirring gas channel is blown from the bottom of the steelmaking furnace, and the stirring gas is used as a carrier gas to spray carbon powder into the molten pool. 1) The oxygen content in the melt is reduced by the combined action of the carbon-oxygen reaction and its products and the bottom blowing stirring gas, especially the iron oxide content in the slag can be effectively reduced, and 2) the additional smelting cycle time increase and corresponding additional heat dissipation loss caused by static stirring with inert gas are reduced.

The invention relates to the technical field of semitrailers, in particular to a new energy driven particle powder material transportation semitrailer which comprises a data acquisition system, a data analysis system, a control system and a correction system. The data acquisition system acquires a parameter set and road condition information; the data analysis system judges a dominant abnormal state based on the pressure gradient and the electrification rate, and judges a recessive abnormal state based on the response amplitude; the control system adjusts torque distribution of a driving shaft or suspension damping based on the cooperation coefficient during dominant abnormity, and adjusts the suspension height and / or in-tank auxiliary vibration frequency based on the response damping ratio during implicit abnormity; and the correction system calculates the comprehensive change rate after the primary adjustment, and dynamically adjusts the preset comprehensive change rate in combination with the road condition information to judge whether the secondary adjustment is performed or not. According to the method, explicit and implicit abnormity accurate identification and secondary adjustment optimization in the particle powder material transportation process are achieved, and the transportation safety and the material fluidity are effectively improved.

The invention relates to the technical field of food contact grade plastic safety detection, and discloses a method for determining the content of limonene in a food contact grade plastic product, which comprises the following steps: S100, preparing a standard solution, S101, preparing an ethanol / water solvent (V: V = 1: 1), mixing 250mL of ethanol with 250mL of water, S102, preparing a mother solution (1000mu g / mL), accurately weighing 0.95-1.05 g (accurate to 0.001 g) of limonene in a 100mL volumetric flask containing 50mL of ethanol, and measuring the content of the limonene in the volumetric flask according to the standard solution. And fixing the volume to 100mL by using ethanol. According to the method for determining the content of limonene in the food contact grade plastic product, the ethanol / water mixed solvent is selected as the poising agent, so that plastic particles can be completely immersed in a liquid phase by the poising agent, and limonene can be transferred into the ethanol / water mixed solvent; the limonene emigrated from the plastic particles is more favorable for being distributed to a gas phase in a gas-liquid equilibrium state, so that the detection sensitivity is improved, and the distribution ratio of the limonene in the gas phase is further improved due to the addition of sodium chloride and a salting-out effect.

The invention provides a DSC-BTrzPhen ligand, a preparation method and application thereof, and a method for separating lanthanide elements and actinide elements from waste liquid, and belongs to the technical field of extraction separation. Starting from the molecular structure design of the ligand, the novel DSC-BTrzPhen ligand is developed by designing the structure of the ligand, the ligand ensures the high distribution ratio of Eu, meanwhile, the introduction of the water-soluble ligand also ensures the efficient reverse extraction of Am, the lanthanum actinide separation factor SFEu / Am of the DSC-BTrzPhen ligand reaches up to 440, and the separation effect is good. In addition, the ligand is good in water solubility and extraction kinetics, the water solubility is extremely good, and balance can be achieved within 15 min. The ligand provided by the invention not only provides a new effective method for spent fuel post-treatment, but also provides important support for sustainable development of nuclear energy and scientific treatment and safe management of existing radioactive wastes.