Abstract: The present application is related to a tissue-selective single-component mRNA delivery carrier and a delivery system. Poly (?-amino ester) polymer is used as the single-component delivery carrier, wherein the poly (?-amino ester) polymer has a structure as shown in Formula I or Formula II. In Formula I or Formula II, the definition of each substituents is the same as in the detailed description. The present invention employs only the poly(?-amino ester) polymer material as the single delivery carrier, and tissue-selective targeting of the delivery system including lung, liver and spleen, etc. can be achieved by locally regulating the chemical structures and the domain charges of the poly(?-amino ester) polymer.

Abstract: Provided is a hydrolysis reaction device for dechlorination and decyanation of blast furnace gas, including a tower body, where a top of the tower body is provided with an air inlet channel, and a bottom of the tower body is provided with an air outlet channel, and functional zones are arranged in the tower body. The functional zones are sequentially an air inlet zone, a first protective agent zone, a first transition zone, a second protective agent zone, a second transition zone, a hydrolysis zone and an air outlet zone along a gas direction, and adjacent functional zones are communicated. Feed holes and discharge holes are uniformly arranged on an outer side surface of the tower body. Gas in a tower radially passes through the protective agent zones and the hydrolysis zone.

Abstract: The present application discloses a pellet flue gas circulation and waste heat utilization process and a system thereof, which relates to the technical field of flue gas treatment. The system includes a grate, a rotary kiln, an annular cooler, and ducts connecting each part. On the basis of not changing the existing process a flue gas circulation unit and intelligent control equipment are arranged additionally in the present application. The process is simple, and not only can ensure the parameter stability of the production system such as temperature, gas flow or gas pressure, but also can make full use of the low and medium temperature flue gas components and the waste heat, so as to achieve net zero waste gas discharging, energy saving and emission reduction.

Abstract: Disclosed is separation process of valuable metals from copper anode slime based on oxidation potential modulation, belonging to the technical field of industrial solid waste resource utilization. The differences in redox properties of different metal elements are used to precisely regulate the oxidation potential and acidity of the leaching solution by regulating the amount of oxidizing agent and acid added, so as to selectively and graded leaching and separating the copper (Cu), selenium (Se), tellurium (Te), and silver (Ag) metal elements, and the oxidants used are substances such as H2O2, O2 and O3.

Abstract: Provided is an exosome, which is secreted by a hybrid cell formed by antigen-presenting cells phagocytosing the cell nuclei of tumor cells. Using the strategy of macrophages phagocytosing the cell nuclei of tumor cells achieves endogenous expression of tumor antigens on macrophages, and the exosome prepared has good capabilities of targeting to lymph nodes and tumors dually.

Abstract: Disclosed in the invention are a lithium-rich manganese-based positive electrode material, a preparation method therefor and an application thereof. The lithium-rich manganese-based positive electrode material comprises a lithium-rich manganese-based positive electrode material core and a shell coated on the surface of the core. The shell comprises a first coating and a second coating. The first coating comprises a composite oxide of Al, Zr, Ce and La and an n-type thermoelectric material. The second coating comprises a composite carbon material, a hydrogen-containing lithium titanium oxide compound and molybdenum disulfide. The lithium-rich manganese-based positive electrode material of the present application has excellent specific discharge capacity, rate capability and cycle stability, and has broad application prospects.

Abstract: The present invention relates to the technical field of functional materials, and in particular to an amorphous metal oxide hollow multi-shell material and a preparation method therefor and an application thereof. The method includes the following steps: 1) performing a heating reaction on a carbon source aqueous solution, filtering, washing, and drying to obtain a carbon sphere template; 2) dispersing the carbon sphere template obtained in step 1) in a first metal salt solution, heating, adsorbing, and drying to obtain a first solid precursor; 3) dispersing the solid precursor obtained in step 2) in a second metal salt solution again, adsorbing, and drying to obtain a second solid precursor; and 4) calcinating the second solid precursor obtained in step 3) to obtain the amorphous metal oxide hollow multi-shell material.

Abstract: The present invention discloses a cyclopeptide glass and a pharmaceutical composition glass containing a cyclopeptide. The cyclopeptide glass of the present invention can simultaneously exert efficacy and function as a drug adjuvant. Compared with crystals and traditional drug dosage forms or adjuvants, the cyclopeptide glass effectively increases a drug dissolution rate, improves drug bioavailability, and may be widely used in the fields of drug delivery and sustained release for resistance to tumors, resistance to viruses/bacteria, blood sugar control, immune regulation, neuromodulation, etc.

Abstract: This disclosure discloses an extraction column for metal separation in an acid leaching solution of laterite nickel ore, and an extraction process thereof. The extraction column includes an extraction column tube body and a gas distribution device; an interior of the extraction column tube body is provided with an accommodating cavity for containing a continuous phase and a dispersed phase, the continuous phase and the dispersed phase are in countercurrent contact in the accommodating cavity; and the extraction column tube body is connected with the gas distribution device to make the gas distribution device pass gas into the accommodating cavity. The gas distribution device is used to control a pipe diameter of a gas outlet of the gas distribution device in a suitable range. Using turbulent effect of bubbles floating in a liquid phase, collisions and shears of the dispersed phase form dispersed phase droplets with suitable sizes.

Abstract: Disclosed are a measurement system for micro-mixing and a measurement method thereof. The measurement system comprises a mixing device, a light enhancement unit, an observation unit, an image acquisition unit, a display device and a tracer injection device; the light enhancement unit comprises a light-emitting device, a light-focusing device and a reflecting device; the observation unit comprises an observation window; the image acquisition unit comprises a distortion-free lens and an image acquisition device which are connected in sequence, and a central axis of the distortion-free lens is in alignment with a central axis of the observation window. The measurement method is performed in the measurement system provided by the present application. In the present application, the brightness of visual field is improved, the light interference on target image is shielded off, the process of micro-mixing can be observed in real time, and thereby the micro-mixing efficiency can be evaluated.

Abstract: A method for enriching carbon dioxide and hydrogen by water-gas shift coupling of blast furnace gas is disclosed in the present application, belonging to the technical field of flue gas resource utilization, where the method includes: purifying the blast furnace gas by a dry purification method, followed by heating and mixing with water vapor, allowing for water vapor shift coupling reaction under an action of a catalyst to obtain a mixed gas of carbon dioxide and hydrogen; adsorbing the mixed gas of carbon dioxide and hydrogen with a carbon dioxide adsorbent and desorbing to obtain carbon dioxide; introducing a gas not adsorbed by the carbon dioxide adsorbent into a molecular sieve adsorbent to remove impurities, then obtaining a hydrogen. Blast furnace gas is used as raw material, and hydrogen is provided for subsequent hydrogen smelting while realizing carbon enrichment in the blast furnace process.

Abstract: Disclosed in the present invention are a device system and method having sintering flue gas CO catalytic heat exchange and medium-and-low-temperature SCR denitration connected in series. In the device system, a CO catalytic heat storage and exchange device is arranged to completely replace an original heat exchanger arranged after a raw desulfurized flue gas pipe. The method comprises respectively carrying out first CO catalytic conversion and second CO catalytic conversion on sintering flue gas and denitrated flue gas by means of the CO catalytic heat storage and exchange device, thereby increasing CO conversion efficiency and reducing overall resistance of the system. In addition, the present invention takes both CO pollution control and carbon emission reduction into consideration and thus has good economic benefits and a good application prospect.

Abstract: Provided are a method of controllably reducing an oxygen content, a method of preparing titanium metal powder, and a method of preparing Ti6Al4V alloy powder. The method of controllably reducing an oxygen content can accurately control the removal amount of oxygen in titanium oxide or vanadium aluminum alloy by introducing a calcium-containing substance into titanium source and/or vanadium source and using aluminum powder in combination as a reductant, and a simple wet treatment is performed on a reduced material obtained after reduction treatment to achieve separation of a reduction by-product and a first reduction powder to obtain high-purity titanium oxide or high-purity vanadium aluminum alloy, thereby providing theoretical and practical bases for preparing a low-valent titanium oxide having a specific oxygen content, a titanium metal powder having a low oxygen content, a vanadium aluminum alloy having a low oxygen content, and a Ti6Al4V alloy having a low oxygen content.

Abstract: Provided are a device for photovoltaic power generation and a method therefor.

Abstract: Disclosed are a polycarbonate and a preparation method therefor and an application thereof. The polycarbonate comprises at least one of structural units selected from a structural unit represented by formula (I) and a structural unit represented by formula (II). The polycarbonate provided by the present application has a high refractive index, and the obtained polycarbonate has a refractive index of 1.673-1.794, which can satisfy performance requirements of polycarbonate as an optical resin in optical components.

Abstract: Disclosed are a hydrogenation catalyst, a preparation method therefor and use thereof. The hydrogenation catalyst includes a carrier and an active component supported on the carrier, wherein the carrier is nitrogen-doped carbon, and the active component is a bimetal selected from Ru—Fe, Ru—Co, Ru—Ni or Ru—Cu.

Abstract: Provided are a system for preparing isotope-labeled carbon dioxide and a method therefor. The preparation method comprises: vaporizing heavy-oxygen water and mixing the heavy-oxygen water with carbon dioxide, and subjecting the heavy-oxygen water and the carbon dioxide to an oxygen-exchange reaction by catalyzing them with a catalytic material, and performing gas-liquid separation after the reaction to obtain the isotope-labeled carbon dioxide. The system provided by the present application has a simple structure, and by adopting the heavy-oxygen water which has a wide source and low cost as an oxygen isotope source and utilizing the oxygen-exchange reaction, the replacement of oxygen-16 in normal carbon dioxide by oxygen-18 in heavy-oxygen water is achieved to obtain the oxygen-18 labeled carbon dioxide product.

Abstract: Provided are a device for hydrogen production from water photolysis and a method therefor, which belongs to the field of photocatalytic solar hydrogen production. The device for hydrogen production from water photolysis comprises: a catalytic reaction unit for water photolysis comprising a light-transmitting surface, and a light condenser component with a light-concentrating surface facing the light-transmitting surface of the catalytic reaction unit for water photolysis; the light condenser component comprises a solar concentrating cone and a reflector for reflecting and concentrating sunlight into the solar concentrating cone.

Abstract: A method for clean recovery of palladium is provided, including the following steps: mixing a palladium-containing material, a Ce4+-containing acidic solution, and an additive, subjecting a resulting mixture to leaching to obtain a Pd2+-containing solution, and subjecting the Pd2+-containing solution to electrolysis to obtain palladium. In the method, the palladium-containing material is subjected to solution leaching with Ce4+ as an oxidative leaching agent and a chlorine-containing additive. After leaching is complete, a Ce4+ and Pd2+-containing leaching liquor is subjected to electrolysis to realize the green regeneration of Ce4+ and palladium. The method of the present disclosure does not lead to the generation of NOx and waste liquid. The present disclosure can significantly reduce the environmental impact and production cost and has excellent economic benefits and application prospects.

Abstract: Disclosed is an external circulating slurry reactive crystallizer, including a riser, a degassing zone and a downcomer. A lower end of the riser is communicated with a gas inlet pipe, a liquid inlet pipe and a solid feeding pipe, while an upper end of the riser is communicated with a lower end of the degassing zone. An upper end of the downcomer is integrally fixed to a sidewall of the degassing zone. At least one hydrocyclone is arranged at a lower end of the downcomer. The hydrocyclone is provided with an overflow port at an upper end thereof and an underflow port and a valve at a lower end thereof. The overflow port is communicated with the riser. The crystallizer can simultaneously realize reaction, crystallization and separation for continuous production with low cost, regulating and controlling the particle size distribution and morphology of crystals.