Abstract: Proposed is a high temperature superconducting wire manufacturing method and a high temperature superconducting wire having multiple superconducting layers formed by applying the method. The method includes a stacking process in which a pair of protective layers of superconducting wires including a substrate, a superconducting layer, and the protective layer are stacked such that the protective layers face each other, a joining process in which the protective layers facing each other are diffusion joining together by thermal treatment and become a joining protective layer, an exfoliating process in which a layered structure of an upper portion of the corresponding superconducting layer is removed such that one side of the superconducting layer is exposed to the outside, and an outermost protective layer forming process in which an outer protective layer formed of the same material as the joining protective layer is formed on the upper portion of the exposed superconducting layer.

Abstract: The present invention relates to an apparatus for sensing precipitation density of sludge in a wastewater treatment tank, more particularly to an apparatus and method for precisely taking density of sludge precipitated in a wastewater treatment tank without being contaminated by sludge. The present invention of an apparatus for sensing precipitation density of sludge in a waste water treatment tank comprises a container which is tube-shaped with a bottom thereof open and submerged in wastewater as filled with gas therein; and a sensor which is installed in the space in the container, and senses sludge density as not directly contacting with wastewater.

Abstract: The present invention relates to an apparatus for sensing precipitation density of sludge in a wastewater treatment tank, more particularly to an apparatus and method for precisely taking density of sludge precipitated in a wastewater treatment tank without being contaminated by sludge. The present invention of an apparatus for sensing precipitation density of sludge in a waste water treatment tank comprises a container which is tube-shaped with a bottom thereof open and submerged in wastewater as filled with gas therein; and a sensor which is installed in the space in the container, and senses sludge density as not directly contacting with wastewater.