326results about How to "Reduced enrichment" patented technology

The present invention relates to a continuous casting mold protecting powder and the manufacturing method of the mold protecting powder for a weathering steel. Adopting the making art of spraying particle, the mold protecting powder is made from the materials such as premelting material, quartz sand, fluorite, industrial calcined soda, magnesite, medium supper soot carbon, graphite, lithium carbonate and so on, chemical ingredients of the mold protection powder in weight percentage are as follows: SiO2 30.0 to 37.0 percent, CaO 30.0 to 37.0 percent, Al2O3 2.0 to 5.0 percent, MgO 3.0 to 6.0 percent, Li2O 1.5 to 2.5 percent, Na2O 5.5 to 8.5 percent, F 4.5 to 7.5 percent, TC(totally carbon) 4.5 to 6.5 percent, 0< Fe2O3 less than or eqal to 1.0%, binary alkalinity CaO/SiO2 is 0.95 to 1.05. The mold protecting powder regarding the invention melts evenly inside the mold and has weak reaction with the rare earth wire, excellent lubricating performance to the casting blank, even and proper heat transmission between the continuous casting mold and the casting blank, therefore reducing the ingot bleeding rate and the occurance rate of surface vertical flaws.

The invention discloses micro-alloying seamless pipeline steel and process for preparation. According to weight percentage, the range of the chemical components of the invention includes that C holds 0.08% to 0.20%, Si is equal to or less than 0.04%, Mn takes 0.60% to 1. 50%, S is equal to or less than 0.015%, P is equal to or less than 0.025%, Al is equal to or less than 0.04%, Ti is equal to or less than 0.04%, H is equal to or less than 2.5*10-4%, O is equal to or less than 25*10-4%, the rest is Fe and unavoidable foreign matters. The process for preparation comprises technique steps, including smelting, refining, continuous casting, hot rolling and slow cooling. Round steel with the size of phi 70 to 150 millimeters can be produced by the process for preparation. The seamless pipeline steel of the invention has perfect anti-sulphide stress corrosion (SSC resistance) capability and anti-HIC property. The pipeline steel which can substitute for welding pipe can be utilized in the filed of oil pipeline and the like, and the invention increases the reliability of material and adaptability of variety, in particular being adaptable for the low submarine temperature and corrosion-resistant environment and for manufacture of thick-walled tubes.

The invention discloses a composite soil passivator for reducing contents of cadmium and lead as well as a preparation method and an application method of the composite soil passivator. The composite soil passivator comprises the following components in percentage by weight: 5-15wt% of composted chicken manure, 5-15wt% of composted mixture of rice chaff and husk, 5-15wt% of turf, 10-20wt% of silicon-calcium-magnesium-potassium fertilizer, 5-15wt% of talcum powder, 25-35wt% of sepiolite, 10-20wt% of stacking fermented sugarcane filter mud and 1.5-2.5wt% of microbial fermentation liquor. The composite soil passivator can be widely applied to the mild and moderate cadmium/lead polluted rice fields to ensure that active cadmium and lead of the soil in the heavy metal polluted rice fields are respectively reduced by 51.5-51.6% and 52.6-58.8%, the cadmium and lead contents of the polished rice are respectively reduced by 48.8-51.6% and 52.7-56.0% and the pH value of the soil is improved by 0.97-1.04; and the composite soil passivator has the functions of restoring the acidized soil, improving the soil fertility and improving the physicochemical property of soil and has huge popularization and application values.

The invention relates to the field of soil fertilizer and provides a biological organic repairing agent for soil pollution and its application and preparation method. The biological organic repairing agent of the invention is composed of, by weight, 1.5-3 parts of eymogenic bacterium, 1-1.5 parts of wheat bran, 1.5-2 parts of molasses meal, 45-50 parts of ammonium humate, 45-50 parts of hydrolase dregs, 150-200 parts of soybean meal, 100-150 parts of humic acid powder, 80-100 parts of zeolite powder, 25-40 parts of a calcium magnesium phosphate fertilizer, 150-200 parts of cattle and sheep manure, 150-204 parts of plant straw, 25-40 parts of potassium humate, 1.5-3 parts of bacillus mucilaginosus, 1-1.5 parts of Gliocladium roseum, 1.5-2 parts of Streptomycesvinaceus-drappus, 1-1.5 parts of trichoderma spp, 1-1.5 parts of Paecilomyces lilacinus, 1-1.5 parts of bacillus subtilis and 1-1.5 parts of micrococcus. According to the invention, soil pollution control, improvement and nutrition are integrated.

The invention discloses a sandwich-type polycrystalline diamond compact and a preparation method thereof and a used binding agent. The binging agent is made through matching of Co powders, Ni powders, TaC powders and B powders according to a certain proportion. The sandwich-type polycrystalline diamond compact comprises two layers of cemented carbide matrixes and a polycrystalline diamond layer arranged between the two layers of cemented carbide matrixes. The polycrystalline diamond layer and diamond powders are matched in a certain proportion through the binding agent, the polycrystalline diamond layer and the substrate are composited with each other through high-temperature high-pressure sintering, and a superhard composite material with three layers of materials is formed. The cemented carbide layers play the role of a protecting layer, the stress state of the compact when the polycrystalline diamond layer is drilled in is improved, and tipping is avoided. The nanocrystalline metal binding agent can facilitate sintering in high temperature and high pressure, so that the boding density between the diamond (D-D bond) is improved, a good sintering promoting function is achieved, forming of a tough sintering body is facilitated, the impact toughness, the wear-resisting performance and the heat-resisting performance of the sandwich-type polycrystalline diamond compact are increased, and the technological difficulty of high-wearing feature and high impact toughness of the polycrystalline compact is overcome.

The invention discloses a hematoxylin and eosin staining kit for circulating tumor cells (CTC). The kit comprises stationary liquid, immunomagnetic microspheres, a staining reagent as well as confining liquid, wherein the confining liquid comprises an ion detergent and a protein protectant; the surfaces of immunomagnetic microspheres are carried with a combined antibody for resisting EpCAM and Her2; the staining reagent is a compound fluorescence staining reagent containing FITC-CK19 or FITC-Her2, Cy3-CD45 and DAPI. The hematoxylin and eosin staining kit for circulating tumor cells (CTC) has the advantages that the interference of blood leucocytes is low, the CTC cells are specifically enriched and captured, and the staining effect on CTC cells is good.

The invention discloses a method for extracting and separating high-purity cannabidiol (CBD) from low-content industrial hemp floral leaves. The method adopts the modes of digestion, macroporous resinadsorption and desorption, reverse chromatography and crystallization to finally obtain a cannabidiol pure product with the purity of 99% or above. In order to separate other cannabinoids, extractionand decoloration processes can be added between the digestion process and the macroporous resin adsorption and desorption process, and a polymer reversed-phase filler is used for reversed-phase chromatography, so that cannabidivarin (CBDV), cannabinol (CBN) and tetrahydrocannabinol (THC) in the floral leaves can be separated. The method disclosed by the invention is high in digestion, extractionand decoloration process yield and high in impurity removal rate; the macroporous resin and reversed-phase column chromatography have the advantages of high loading capacity and favorable separation effect. Requirements of development of a plurality of industrial hemp products are met, and the method has great application advantages in the pharmaceutical field and is suitable for industrial popularization.

The invention discloses a dynamic coordination control method for a high acceleration process of a hybrid vehicle, which comprises the following steps: (1) determining an engine target torque Te'(m) and a target torque Tm'(m) of a motor system, which are distributed in a steady state; (2) judging whether entering a dynamic coordination process of high acceleration, if so, entering a step (3), if not, returning to the step (1); and (3) performing dynamic coordination according to an engine torque command Te(m-1) at a former moment, the engine target torque Te'(m) and the target torque Tm'(m) of the motor system, obtained by an energy management policy so as to obtain an engine torque command value Te(m) and a torque command value Tm(m) of the motor system; and the method of the invention fully utilizes the compensation capability of the motor, guarantees the dynamic property of the high acceleration process, effectively reduces the engine concentration and improves the economical efficiency of the high acceleration process.

The invention belongs to the field of agriculture and environment, and relates to a modeling method for a prediction model of the cadmium content in vegetables and application thereof. The modeling method comprises the following steps that a soil sample is collected, the iron-extractable (FeDCB-soil) content of sodium hydrosulfite-trisodium citrate-sodium bicarbonate (DCB) in soil, the cadmium-extractable (Cdoxalate-soil) content of oxalic acid/ammonium oxalate (Oxalate) and the aluminum-extractable (AlNaoac-soil) content of acetic acid/sodium acetate (NaOAc) in the soil are measured, and a model relationship among the content of FeDCB-soil, Cdoxalate-soil and AlNaoac-soil and the content of vegetable cadmium (Cdplant) is established. The formula of the established model is shown in the formula. The model is suitable for the prediction of the cadmium content of the vegetables in the soil, can improve the prediction accuracy of the cadmium content of the vegetables, and provide reference for vegetable safety production layout.

The invention discloses a method for sifting a vegetable breed with low-accumulated/low-enriched heavy metals and belongs to the technical field of the quality safety of a farm product. The method comprises the following steps: (1) a potted plant mode is carried out in a greenhouse or a big shed; (2) sifting is carried out from four classes of vegetables, namely lefty vegetable, rhizome, solanaceous fruit and melon; (3) according to the limited values of the detected elements Hg, As, Pb and Cd for heavy-metal pollution in the vegetables regulated by the state and the concentration grads of 0 time, 0.5 time, 1.5 times and 4.5 times, heavy metals are added into potted soil manually; (4) vegetables are subjected to seedling, planting and management; and (5) the contents and the outputs of the heavy metals in an edible part of a product are mensurated; the product which meets the highest concentration treatment, has no marked reduction of average output per plantlet compared with the contrast and does not exceed the standard of the contents of the heavy metals is selected as the vegetable breed with low-accumulated/low-enriched heavy metals. The method has simple operation, wide applicability, economy and high efficiency, and can be popularized and applied to the departments of vegetable layout, planning and production.

The invention relates to the field of medicine chemical synthesis and in particular relates to a method for preparing erythrocyte membrane vesica coated prussian blue nanoparticles from prussian blue,erythrocyte membrane vesicae and a photosensitizer which is finally embedded, and specific methods of different steps. The method for preparing the erythrocyte membrane vesica coated prussian blue nanoparticles with the embedded photosensitizer Ce6 specifically comprises the following steps: (1) preparing prussian blue nanoparticles; (2) preparing erythrocyte membrane vesicae; (3) embedding the photosensitizer Ce6 into the erythrocyte membrane vesicae; and (4) coating the prussian blue nanoparticles with the erythrocyte membrane vesicae into which the photosensitizer is embedded. The composite nano medicine delivery system provided by the invention has the advantages that the circulation time of medicines in bodies is increased, a large medicine carrying amount is achieved, and high biocompatibility is achieved.

The invention discloses an iron and steel enterprise high-salinity wastewater treatment process, and belongs to the technical field of industrial wastewater treatment. According to the technical scheme, the process comprises the steps: treating high-salinity wastewater through an adjusting tank, a chemical softening tank, a multi-medium filter, an ozone catalytic oxidation tower, a membrane bioreactor (MBR), primary ultrafiltration, two-stage low-pressure reverse osmosis, activated carbon adsorption, secondary ultrafiltration, weak acid resin, nanofiltration, high-pressure reverse osmosis, adsorption defluorination, electrodialysis (ED), and treatment with chelating resin and a bipolar membrane in sequence; the quality of recycled water is better than that of industrial new water, the recycled water can be used as desalted water, and the produced by-products hydrochloric acid and sodium hydroxide can be recycled for the process system, other water treatment systems of iron and steel enterprises and the like, so that the outsourcing cost is saved, and resource utilization is realized. The process is low in energy consumption, low in cost, simple in equipment, easy to operate, stablein treatment effect and beneficial to water optimization and sustainable development of iron and steel enterprises.

The invention relates to a smelting method for non-magnetic stainless steel. The smelting method comprises the following steps in sequence: I, electric furnace smelting: tapping when components of molten steel meet the following requirements that the content of C is 1.2 to 2.0 percent, the content of Cr is 18 to 19 percent, the content of Ni is 9 to 10 percent, the content of P is less than or equal to 0.02 percent and the balance is Fe and inevitable impurities; II, argon oxygen decarburization (AOD) smelting: blowing oxygen into the molten steel in an AOD furnace, heating and decarbonizing until the content of C is less than or equal to 0.02 percent, adding ferrosilicon for reduction, removing pre-reducing slag until the binary basicity of the reducing slag is 1.8 to 2.0 percent, adding 8 to 10 kg of lime into per ton of molten steel to generate new slag after slag removal, regulating the slag by using 10 to 20 kg of Ca-Si powder and 10 to 20 kg of Al powder until the slag is light green or yellowish white, blowing argon to slag for at least 4 minutes to ensure that the content of S in the molten steel is less than or equal to 0.001 percent; III, LF (ladle furnace) smelting: heating the molten steel by using electricity when the molten steel reaches an LF station, feeding the molten steel to a Ca-Si line, adding ferroboron, and blowing the argon with stirring; and IV, continuous casting. According to the stainless steel which is prepared by using the smelting method for the non-magnetic stainless steel, the occupied positions of S among steel crystals are reduced, and the plasticity of the stainless steel is improved.

The invention relates to the technical field of in-situ restoration and dewatering for pollution of river-lake bottom mud and particularly relates to an in-situ restoration system and method for the river-lake bottom mud polluted by heavy metals. The system comprises a steel-plate mold frame with a square-shaped structure, wherein the lower part of the steel-plate mold frame is inserted and driveninto the river-lake bottom mud; a volatile organic pollutant gas collecting bag is arranged at the upper part of the steel-plate mold frame and is connected to a volatile organic pollutant gas disposal system by a gas suctioning pipeline; the four corners of the steel-plate mold frame are respectively provided with a non-volatile organic pollutant disposal device I, a heavy-metal and volatile organic pollutant disposal device, a non-volatile organic pollutant disposal device II and a non-volatile organic pollutant disposal device III; the steel-plate mold frame is also provided with an electric restoration system and a sewage discharging system. The in-situ restoration system and method have the beneficial effects that electric restoration and dewatering technologies are applied in disposal of the river-lake bottom mud simultaneously, the economic-practical effects and the environment-friendly effect are achieved, the effect is better, the method is simple in operation, and no secondary pollution is generated.

The invention relates to a CT contrast agent with gold nanoparticles wrapped with zwitter-ion modified dendrimer and a preparation method and application of the CT contrast agent. The surface of the dendrimer is modified with the zwitter-ion carboxybetaine acrylic amide (CBAA), and the gold nanoparticles are wrapped with the dendrimer, wherein the dendrimer is fifth-generation polyimide dendrimer G5.NH2. The preparation method comprises the steps that the CBAA and the fifth-generation polyimide are stirred and reacted at the room temperature to obtain CBAA-G5.NH2, an HAuCl4 solution is added, NaBH4 is added for reduction, triethylamine and acetic anhydride are added finally, and then the CT contrast agent is obtained. Compared with a traditional contrast agent modified by mPEG, the consuming quantity of in-vitro macrophages is low, protein adsorption in the protein adsorption resistance experiment is low, the in-vivo rat blood circulation time is longer, liver gathering in the mouse CT experiment is low, the renal metabolism is slower, and the CT contrast agent can also be used for rat blood pool radiography and rabbit lymphonodus VT imaging.

The invention belongs to the technical field of agriculture, and particularly discloses a planting method of green vegetables. The planting method comprises the following steps of 1, sowing, 2, cultivating, 3, transplanting, 4, cultivation, and 5, harvesting. Compared with the prior art, in the process of planting the vegetables according to the planting method, the vegetables can sufficiently absorb light, and thus the growth momentum of the vegetables is excellent.