88results about How to "Improve stability efficiency" patented technology

The invention discloses coated type nanoscale zero-valent iron as well as a preparation method and an application thereof. The coated type nanoscale zero-valent iron comprises nanoscale zero-valent iron and sodium alginate, wherein the nanoscale zero-valent iron is coated with sodium alginate, and a mass ratio of sodium alginate to the nanoscale zero-valent iron is (0.1-0.4):1. The preparation method of the coated type nanoscale zero-valent iron comprises the step that the nanoscale zero-valent iron and a sodium alginate solution are mixed and subjected to ultrasonic treatment, and the coated type nanoscale zero-valent iron is obtained. The coated type nanoscale zero-valent iron can be used for treating sediment with heavy metal pollution, is simple and convenient to operate, good in stabilizing effect, good in mobility, low in repair cost, clean and pollution-free, has no toxic and harmful effects on the environment and has broad application prospect in the technical field of treatment of heavy metal pollution of the sediment.

The present invention discloses a compound agent for repairing heavy metal contaminated soil and an application thereof. The compound agent comprises the following components in parts by mass: 30-75 parts of soluble ferric salts and/or ferrous salts, 10-60 parts of calcium-based compounds, 5-20 parts of sodium lignosulfonate and 2-10 parts of an organic sulfur chelating agent. The soluble ferric salts and/or ferrous salts, calcium-based compounds, sodium lignosulfonate, and organic sulfur chelating agent of sodium dimethyl dithiocarbamate, etc. can effectively repair the compound contaminatedsoil by heavy metals of arsenic, cadmium, etc.

The invention relates to a calcium/zinc composite thermal stabilizer composition with superior thermal stability and application thereof. The composition is prepared by uniformly mixing calcium soap, macromolecular zinc soap, polyatomic alcohol and an antioxidant according to the mixture ratio under the conditions of normal temperature and normal pressure. The composite stabilizer composition has good thermal stability and coloring resistance on chlorine-containing resin, has the characteristics of non-toxicity, no heavy metal pollution and so on, avoids high cost of an organic tin stabilizer and toxicity of a lead stabilizer and a cadmium stabilizer, and has certain practical value.

The invention discloses a new method for treating arsenic caustic sludge. According to the method, the arsenic caustic sludge is preliminarily crushed; stabilizer ferric salt is added into the arsenic caustic sludge to be evenly stirred; dilute acid solutions are added into the arsenic caustic sludge to be evenly stirred; finally, natural curing is carried out. According to the method, the problem of the pollution or potential menace of existing high-concentration arsenic caustic sludge (pH is larger than 12) to the environment is solved, and the leaching toxicity of the arsenic caustic sludge is reduced so as to meet the entrance requirement of a hazardous waste landfill. The method is simple in technology, raw materials are easily obtained, the disposal cost is low, and the method has the good application prospect.

The invention relates to a preparation method of a single-dispersion highly crosslinked polystyrene microsphere, belonging to the field of polymer microsphere materials. The preparation method is characterized in that a polymerizable charged micromolecule monomer is used as a stabilizing agent, polymer particles are stabilized through the static function of a charge, and then the crosslinked polystyrene microsphere is prepared by adopting a one-step charging method. The preparation method comprises the following steps of: adding the stabilizing agent and an initiator in a container, then adding a methanol/water mixing solvent, monomer styrene and divinylbenzene as a cross-linking agent, heating to 75 DEG C, stirring for dispersion polymerization, reacting for 8h, and then centrifugally separating and drying products, wherein the stabilizing agent is methacrylatoethyl trimethyl ammonium chloride or sodium p-styrene sulfonate. The invention can improve the gel content of the microsphere to 85.84% by adopting the one-step charging method to prepare the polystyrene microsphere capable of basically keeping the shape in tetrahydrofuran, the particle size of the microsphere is 0.5-1.5 micrometers, and the polystyrene microsphere can be used in the fields of chromatographic separation, biomedicine, coatings and the like.

An organic electroluminescent device (OELD) is provided. The OELD includes a substrate, an anode, a cathode and an emissive layer. The anode and the cathode opposite to the anode are disposed over the substrate. The emissive layer is disposed between the anode and the cathode. The emissive layer includes a light-emitting material. The chemical structure of the light-emitting material represented by the formula [1]:

The chemically structure L is selected from a group consisting of the chemical structures AA, BB, AB, and the combination thereof. The chemical structure A of the formula [2]:

The chemical structure X is selected from the group 4A to 6A elements of the periodic table.

The chemical structure B is aromatic hydrocarbons having n benzene, n is a integer of 1 to 8. The chemical structure B of the formula [3]:

There is provided an exhaust pressure-adjusting valve that is brought into a closed position due to a biasing force of a resilient body and is opened against the biasing force of the resilient body due to the exhaust pressure in an exhaust channel, which is raised in response to the closing of a throttle valve, in which valve-opening area is increased or decreased according to the displacement of the resilient body, to thereby adjust the exhaust pressure. The exhaust pressure-adjusting valve has means for changing the growth rate of the valve-opening area, which gradually heightens the growth rate of the valve-opening area with respect to the displacement of the resilient body in a valve-opening direction.

The invention discloses modified nanoscale zero-valent iron and a preparation method and application of the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron comprises rhamnolipid and nanoscale zero-valent iron. The surface of the nanoscale zero-valent iron is modified through the rhamnolipid, and the mass ratio of the rhamnolipid to the nanoscale zero-valent iron is 0.1-2:1. The preparation method comprises the steps that a rhamnolipid solution and a ferrous sulfate solution are mixed, and a NaHB4 solution is dropwise added for a reaction to obtain the modified nanoscale zero-valent iron. The modified nanoscale zero-valent iron has the advantages of being good in dispersing performance, good in stability, high in reaction activity, high in permeability and the like, has the good stabilization efficiency for metal lead in bottom mud, brings no secondary pollution to environment, has a good application value, and has the wide application prospect in the technical field of bottom mud heavy metal pollution treatment.

Embodiments of the disclosure include methods and compositions for treatment of a medical condition related to the liver, including at least viral infections and liver cancer, for example. In specific embodiments, immunotherapies are provided for delivering polynucleotides locally to the liver, wherein the polynucleotides encode particular gene products that include bispecific antibodies, including those that target certain liver antigens, for example.

The invention provides 3D-printable ultra-high performance concrete, and belongs to the technical field of concrete. The 3D-printable ultra-high performance concrete provided by the invention comprises the following components in parts by weight: 600 to 620 parts of Portland cement of which the strength grade is not lower than 42.5, 190 to 210 parts of silica fume, 100 to 120 parts of fly ash, 330to 340 parts of quartz powder, 350 to 370 parts of a fine aggregate, 500 to 510 parts of a coarse aggregate, 144 to 200 parts of steel fibers, 8 to 22 parts of a water reducing agent, 1 to 3 parts ofcellulose, and a stabilizer, wherein the stabilizer comprises 60 to 80 parts of sulfoaluminate cement and/or 5 to 8 parts of clay minerals. The ultra-high performance concrete provided by the invention can be used for 3D printing, and the defect that UHPC is difficult for 3D printing molding is overcome; and the prepared 3D-printable UHPC can achieve mechanical properties equivalent to those of conventional UHPC, and has the characteristics of high strength and high toughness.

The invention provides 3D-printable aeolian sand anti-freezing concrete as well as a preparation method and a use method thereof, and belongs to the technical field of concrete. The aeolian sand anti-freezing concrete capable of 3D printing provided by the invention is prepared from the following preparation raw materials in parts by weight: 166-186 parts of Portland cement not lower than 42.5 grade; 3 to 13 parts of silica fume; 6 to 16 parts of fly ash; 330 to 350 parts of aeolian sand; 1-5 parts of a water reducing agent; 0.1 to 1.5 parts of cellulose ether; 0.05 to 0.5 part of starch ether; 0.1 to 1.5 parts of a defoaming agent; 0.2 to 4 parts of polypropylene fiber; 60 to 75 parts of water; the aeolian sand is aeolian sand subjected to alkali treatment. The aeolian sand anti-freezing concrete provided by the invention not only can realize 3D printing, but also is excellent in mechanical property and durability, and the conditions of shortage of natural sand and abundant aeolian sand resources in desert areas are adjusted according to local conditions, and local materials are used.

The invention discloses a solid methyltin mercaptide complex heat stabilizer which consists of 60-80 parts of solid methyltin mercaptide, 3-20 parts of a metallic soap type stabilizer, 10-20 parts of an inorganic auxiliary, 1-5 parts of an antioxidant, 1-5 parts of beta-diketone, 1-10 parts of polyhydric alcohols, 30-50 parts of an inner lubricating agent and 10-30 parts of an outer lubricating agent, wherein the tin content of the solid methyltin mercaptide is 25-30 percent. The tin content of the solid methyltin mercaptide adopted by the solid methyltin mercaptide complex heat stabilizer is high, so that an enough space is retained to compounding of the inner and outer lubricating agents and the auxiliary, and the optical stabilization performance and the best lubricating effect are achieved.

The invention relates to the field of prefabricated wall dismounting and mounting equipment, and particularly relates to a detachable prefabricated building wall and a dismounting and mounting devicethereof. The detachable prefabricated building wall comprises a dismounting and mounting device and a lifting rope, wherein a clamping device is movably mounted at the lower end of the dismounting andmounting device; a prefabricated wall body is movably mounted on the inner side of the clamping device; a driving plate is movably mounted at the upper end of the interior of the dismounting and mounting device; a moving rod is movably mounted at the middle end of the interior of the dismounting and mounting device; an engaging block is movably mounted at the upper end of the clamping device; theupper end of the engaging block is embedded into the driving plate, and one end of the driving plate is connected with the lifting rope; when a lifting device drives the lifting rope to be wound upwards, the lifting rope can be utilized for applying acting force to the driving plate, thus the clamping device is driven to move towards the prefabricated wall body, and the effect of automatically clamping and lifting the prefabricated wall body is achieved; and a penetrating rod is fixedly mounted at the upper end of the clamping device, thus when the prefabricated wall body is clamped, the penetrating rod can penetrate through a lifting ring on the prefabricated wall body to enter a rod sleeve, and the fixing effect of the clamping device on the prefabricated wall body is improved.

The invention relates to the technical field of bridge construction, in particular to a thrust device of a guy rope hanging basket for bridge construction. The thrust device comprises a bottom die, awalking mechanism, a thrust mechanism and a fixing mechanism, wherein the walking mechanism is arranged at the top of the bottom die and is detachably connected with the bottom die, the thrust mechanism is arranged at one end corresponding to the walking mechanism and is detachably connected with the walking mechanism, the thrust mechanism is detachably connected with the bottom die, the thrust mechanism comprises a fixing seat, a limiting assembly and a clamping assembly, and the fixing mechanism comprises a support, a stretching assembly and an elastic self-locking assembly. According to thethrust device, a walking sliding seat is driven by the hanging basket to walk on a hanging basket sliding rail, the walking sliding seat drives a steel type tenon and a strip-shaped plate to be inserted into a rectangular groove and an embedding groove respectively, and the steel type tenon and a component supporting the steel type tenon are limited and stabilized, so that the effect of thrustingthe guy rope hanging basket is achieved; and the thrust device is convenient to operate, safe and efficient, and the thrusting and stabilizing efficiency of the guy rope hanging basket is greatly improved.

The invention discloses a stabilizing agent for repairing arsenic slag and an application method of the stabilizing agent. The stabilizing agent is prepared by mixing a pH regulator and a high molecular polymer stabilizer according to a mass ratio of (0.5-1.5):1 and carrying out grinding and crushing. When the stabilizing agent is used for repairing arsenic slag, the arsenic slag to be repaired isfirstly air-dried and crushed, the stabilizing agent is added into the arsenic slag according to a mass of 3-12% in dry basis of the arsenic slag, uniform mixing is carried out, then water is added into the arsenic slag until the water content is 30-35%, uniform mixing is carried out, curing is carried out for 1-5 days, and then the arsenic slag is subjected to landfill after being detected to bequalified. Raw materials for preparing the stabilizing reagent are cheap and are easy to obtain, preparation cost is low, the repairing method is simple in process, the treatment capacity is large, and repairing efficiency is high. The stabilizing agent can be applied to large-scale repairing tasks of plots with different pollution degrees.

The invention discloses a method for soiling metal tailings and stabilizing heavy metals. The method comprises the following steps of S1, drying, crushing and sieving coal gangue to obtain coal ganguepowder, and air-drying municipal sludge to obtain air-dried municipal sludge; and S2, turning over the tailings to be treated, adding the coal gangue powder accounting for 5-10% of the mass of the tailings and the air-dried municipal sludge accounting for 5-10% of the mass of the tailings during turning over, uniformly mixing, adding a stabilizing agent accounting for 3-13% of the mass of the tailings and water, continuously and uniformly mixing to obtain a mixture with the solid-to-liquid ratio of 1: 0.2-0.3, and standing for at least one month. According to the method for soiling the metaltailings and stabilizing the heavy metals provided by the invention, the coal gangue and the municipal sludge are doped into the tailings and mixed, so that the fertility of the tailings is improved,the effect of reducing partial heavy metal mobility is achieved, then the stabilizing agent is added, most heavy metal in a mixture is stabilized, the heavy metal of the tailings is stabilized while the tailings are soiled, and therefore, the ecological environment around the tailings is effectively protected.

A managing apparatus for network traffic includes: a first traffic control engine determining whether to perform secondary analysis by primarily analyzing a packet and transferring the packet of which the secondary analysis will be performed to a second traffic control engine associated with a service server to which the packet will be transmitted; and a plurality of second traffic control engines performing the secondary analysis of the packet of which the secondary analysis is required among the packets transferred from the first traffic control engine and transferring the packet to be transferred to the service server to the first traffic control engine according to a result of performing the secondary analysis.

The invention discloses a method and device for stabilizing heavy metals in sludge by electrically promoting enhanced anaerobic fermentation. According to the method and device for stabilizing heavy metals in the sludge by electrically promoting enhanced anaerobic fermentation, magnetized water, humus, nano-iron and acclimated microbial liquid are stirred and uniformly mixed with municipal dewatered sludge treated by an A2/O process in an adjusting tank, the water content and pH of the sludge are adjusted, and the uniformly mixed sludge slurry is conveyed to a fermentation tank through a pump;a positive electrode and a negative electrode are arranged in the sludge of the fermentation tank, pulse direct current is introduced into the positive electrode in the fermentation tank in a mannerof continuously applying an electric field; the sludge is subjected to medium-temperature anaerobic fermentation, biogas is collected, heavy metal stabilization is achieved; in the fermentation process, fermentation liquor is periodically discharged, exchangeable heavy metal is discharged from the bottom along with the fermentation liquor, the separation of the heavy metal and the sludge is achieved, and meanwhile the purpose of sludge reduction is achieved. The method increases the contents of heavy metal organic states and residue states in the sludge and has high stabilization efficiency and good stabilization effect; the separation of solid, liquid and gas in a sludge fermentation process is realized, and the biogas generation efficiency is high.