An oxide superconductor according to an embodiment includes an oxide superconducting layer includes a single crystal having a continuous perovskite structure containing at least one rare earth element selected from the group consisting of yttrium, lanthanum, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, barium, and copper, containing praseodymium is a part of the site of the rare earth element in the perovskite structure, and having a molar ratio of praseodymium of 0.00000001 or more and 0.2 or less with respect to the sum of the at least one rare earth element and praseodymium; fluorine in an amount of 2.010.sup.15 atoms/cc or more and 5.010.sup.19 atoms/cc or less; and carbon in an amount of 1.010.sup.17 atoms/cc or more and 5.010.sup.20 atoms/cc or less.

An oxide superconductor according to an embodiment includes an oxide superconducting layer includes a single crystal having a continuous perovskite structure containing at least one rare earth element selected from the group consisting of yttrium, lanthanum, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, barium, and copper, containing praseodymium is a part of the site of the rare earth element in the perovskite structure, and having a molar ratio of praseodymium of 0.00000001 or more and 0.2 or less with respect to the sum of the at least one rare earth element and praseodymium; fluorine in an amount of 2.010.sup.15 atoms/cc or more and 5.010.sup.19 atoms/cc or less; and carbon in an amount of 1.010.sup.17 atoms/cc or more and 5.010.sup.20 atoms/cc or less.

A method of treating a waste liquid includes: an aluminum dissolution step of dissolving aluminum in an acidic waste liquid and performing separation into a first treated water and a reduced heavy metal precipitate; a gypsum recovery step of adding a calcium compound to the first treated water at a liquid property of a pH of 4 or less, and performing separation into a second treated water and gypsum; an aluminum and fluorine removal step of adding an alkali to the second treated water and performing separation into a third treated water and a precipitate containing aluminum and fluorine; and a neutralization step of adding an alkali to the third treated water and performing separation into an alkali neutralization treated water and a neutralized precipitate of a heavy metal hydroxide.

Provided herein are polymeric capsules and methods for solvent-free extractive separation of ions from mixed solutions using polymeric capsules. The capsules can comprise a polymeric shell encasing an inner chamber and a lipophilic ligand within the polymeric shell. Methods for making the polymeric capsules are also provided.

The present invention provides composition comprising a metal oxide semiconductor nanomaterial coated or dispersed with a hemostatic polymer.

Compositions comprising high levels of high specific activity copper-64, and process for preparing said compositions. The compositions comprise from about 2 Ci to about 15 Ci of copper-64 and have specific activities up to about 3800 mCi copper-64 per microgram of copper. The processes for preparing said compositions comprise bombarding a nickel-64 target with a low energy, high current proton beam, and purifying the copper-64 from other metals by a process comprising ion exchange chromatography or a process comprising a combination of extraction chromatography and ion exchange chromatography.

The present disclosure relates to a method for preparing high-temperature superconducting yttrium barium copper oxide (YBCO) wire by 3D-printing, this method is divided into the following four steps: firstly, preparing a nano-level superconducting powder precursor; and then, preparing a printing paste with suitable viscosity and supporting characteristics; after that, using a CAD 3D modeling, exporting STL format model data and slicing by a professional software; implementing one-step preparing strands with low AC loss by twisting the print nozzle. Finally, the printed twisted wire is formed into a practical superconducting twisted cable through the processes such as plastic removal process, crystallizing process, oxygen supplementing process and assembling process in order. The present disclosure firstly provides an application for applying high temperature superconducting material to direct ink writing 3D-printing technology. By preparing micro/nano level superconducting core filaments based on 3D-printing, the diameter of the core filaments could be reduced, and thereby a material-structure integrative design could be implemented. The present disclosure simplifies the preparation of high temperature superconducting wires, improves the current-carrying capacity and the production efficiency of the high temperature super conducting wires, and reduces the production cost.

An electromagnetic shielding film and a method for making the same. The method includes: dispersing a conductive agent and a magnetic nanomaterial in sodium alginate solutions to form an electrically conductive shielding solution and a magnetic field shielding solution, respectively; applying the electrically conductive and magnetic field shielding solutions onto two opposite surfaces of a transparent substrate to form an electrically conductive shielding layer and a magnetic field shielding layer, respectively, so that an electromagnetic shielding film precursor of a sandwich structure is obtained; and placing the film precursor in a calcium chloride solution to perform a crosslinking process to cure the layers, so as to obtain an electromagnetic shielding film product after being rinsed and dried. The electric and magnetic fields shielding layers of the film can each have a uniform thickness and cooperate to provide an improved shielding effect and superior performances for the film.

An electromagnetic shielding film and a method for making the same. The method includes: dispersing a conductive agent and a magnetic nanomaterial in sodium alginate solutions to form an electrically conductive shielding solution and a magnetic field shielding solution, respectively; applying the electrically conductive and magnetic field shielding solutions onto two opposite surfaces of a transparent substrate to form an electrically conductive shielding layer and a magnetic field shielding layer, respectively, so that an electromagnetic shielding film precursor of a sandwich structure is obtained; and placing the film precursor in a calcium chloride solution to perform a crosslinking process to cure the layers, so as to obtain an electromagnetic shielding film product after being rinsed and dried. The electric and magnetic fields shielding layers of the film can each have a uniform thickness and cooperate to provide an improved shielding effect and superior performances for the film.

This application pertains to methods of recovering metals from metal sulfides that involve contacting the metal sulfide with an acidic sulfate solution containing ferric sulfate and a reagent that has a thiocarbonyl functional group, wherein the concentration of reagent in the acidic sulfate solution is sufficient to increase the rate of metal ion extraction relative to an acidic sulfate solution that does not contain the reagent, to produce a pregnant solution containing the metal ions.