Abstract: A microbial preparation and a method for remedying a polycyclic aromatic hydrocarbons (PAHs)-contaminated soil are disclosed. The microbial preparation contains Pseudomonas sp. KW-2 with a deposit number of CGMCC No. 29017. In the soil remediation method, an oxidizing agent is added to the PAHs-contaminated soil for pre-oxidation treatment, where the oxidizing agent is selected from the group consisting of Fenton's reagent, hydrogen peroxide, sodium persulfate, potassium permanganate, and a combination thereof; a carbon source or a nitrogen source added to reach a carbon-to-nitrogen ratio of 100:5-20, and the microbial preparation is introduced for microbial remediation, where the carbon source is selected from the group consisting of glucose, fructose, sucrose, starch, and a combination thereof; and the nitrogen source is selected from the group consisting of ammonium chloride, ammonium nitrate, potassium nitrate, sodium nitrate, and a combination thereof.

Abstract: A method for preparing a biogenic manganese oxide (BMO)@sponge biomaterial, in which a divalent manganese ion solution and a sponge carrier are added to a pre-sterilized culture medium, and then a manganese oxidizing bacterium with an accession number of ATCC 23483 is inoculated. The culture medium was cultured and freeze-dried to obtain the BMO@sponge biomaterial. This application further provides a method for treating an antibiotic-containing wastewater, in which a BMO@sponge biomaterial prepared by such method and a peroxymonosulfate (PMS) added to the wastewater. The PMS is activated by the BMO@sponge biomaterial to generate active substances such as hydroxyl radicals, sulfate radicals and singlet oxygen radicals, which can efficiently degrade the antibiotic into CO2 and water through a series of physical and chemical reactions and free radical chain reactions.

Abstract: A manganese carbonate-supported ferrihydrite material preparation method, in which manganese sulfate and ammonium bicarbonate are respectively dissolved to obtain a manganese sulfate solution and an ammonium bicarbonate solution, and the manganese sulfate solution is added with ferrihydrite, dropwise added with the ammonium bicarbonate solution and reacted under magnetic stirring to obtain a precipitate. The precipitate is washed with distilled water and dried in a drying oven to obtain the manganese carbonate-supported ferrihydrite material. A method for treating wastewater polluted by arsenic (As) and antibiotics by using the manganese carbonate-supported ferrihydrite material is also provided.

Abstract: Disclosed are a micro-column gel card, and a sample adding mechanism and method. The micro-column gel card includes a fixing plate and a plurality of tubular columns (3) arranged and fixed through the fixing plate. The tubular columns (3) are fixed to two sides of the fixing plate respectively, and the tubular columns (3) located on the two sides of the fixing plate are arranged in a staggered manner. Each tubular column (3) includes a sample adding cavity (301), a reaction cavity (302), and a gel column (303). The gel column (303) is configured to load a gel reagent. A central axis of the sample adding cavity (301) and a central axis of the gel column (303) do not coincide. The tubular columns (3) are designed in a double-row staggered manner.

Abstract: A stent for a blood vessel includes a covering membrane and anchoring members connected to the covering membrane. The anchoring members are configured to secure the covering membrane within the blood vessel. The covering membrane is configured to pocket a diseased area of the blood vessel. The anchoring members are configured to sufficiently attach the covering membrane to the intima of the blood vessel when the stent is subjected to blood flow, fixing the covering membrane in the intended implantation position. The covering membrane can pocket the unstable plaque on the blood vessel intima, preventing rupture of the unstable plaque.

Abstract: An evaporator and a baffle structure thereof are disclosed by the present application. The baffle structure is configured to block liquid droplets in a gas, and includes: a bottom portion extending in a first direction and side portions extending from the bottom portion in a direction intersecting the first direction; and a liquid blocking region provided on the side portions, the liquid blocking region being provided therein with a plurality of holes penetrating the side portions to allow gas to pass through the holes.

Abstract: A degradable drug-loaded stent and a manufacturing method therefor. The degradable drug-loaded stent comprises a stent body, an outer surface of the stent body being provided with a drug-loaded groove, the stent body having a contracted state and an expanded state, the stent body being capable of switching from the contracted state to the expanded state via radial expansion, the stent body being a mesh columnar structure when in the expanded state, the depth of the drug-loaded groove being 10%-60% of the wall thickness of the mesh columnar structure.

Abstract: An evaporator and a baffle structure thereof are disclosed by the present application. The baffle structure is configured to block liquid droplets in a gas, and includes: a bottom portion extending in a first direction and side portions extending from the bottom portion in a direction intersecting the first direction; and a liquid blocking region provided on the side portions, the liquid blocking region being provided therein with a plurality of holes penetrating the side portions to allow gas to pass through the holes.

Abstract: Fe—Al—Cu catalysts have numerous industrial applications, for example, as catalysts in a water gas shift reactor. A method of producing a Fe—Al—Cu catalyst comprises the steps of providing an organic iron precursor, dissolving the organic iron precursor in a solvent solution, adding an aqueous solution comprising aluminum nitrate and copper nitrate to the organic iron pre-cursor-solvent solution, precipitating a gel comprising Fe—Al—Cu by adding a base, and drying the gel to form the Fe—Al—Cu catalyst.

Abstract: Fe—Al—Cu catalysts have numerous industrial applications, for example, as catalysts in a water gas shift reactor. A method of producing a Fe—Al—Cu catalyst comprises the steps of providing an organic iron precursor, dissolving the organic iron precursor in a solvent solution, adding an aqueous solution comprising aluminum nitrate and copper nitrate to the organic iron pre-cursor-solvent solution, precipitating a gel comprising Fe—Al—Cu by adding a base, and drying the gel to form the Fe—Al—Cu catalyst.